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gtkimhtml.c

/*
 * @file gtkimhtml.c GTK+ IMHtml
 * @ingroup pidgin
 */

/* pidgin
 *
 * Pidgin is the legal property of its developers, whose names are too numerous
 * to list here.  Please refer to the COPYRIGHT file distributed with this
 * source distribution.
 *
 * This program is free software; you can redistribute it and/or modify
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
 *
 */
#define _PIDGIN_GTKIMHTML_C_

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "internal.h"
#include "pidgin.h"
#include "pidginstock.h"
#include "gtkutils.h"
#include "smiley.h"
#include "imgstore.h"

#include "debug.h"
#include "util.h"
#include "gtkimhtml.h"
#include "gtksmiley.h"
#include "gtksourceiter.h"
#include "gtksourceundomanager.h"
#include "gtksourceview-marshal.h"
#include <gtk/gtk.h>
#include <glib.h>
#include <gdk/gdkkeysyms.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#ifdef HAVE_LANGINFO_CODESET
#include <langinfo.h>
#include <locale.h>
#endif
#ifdef _WIN32
#include <gdk/gdkwin32.h>
#include <windows.h>
#endif

#include <pango/pango-font.h>

/* GTK+ < 2.4.x hack, see pidgin.h for details. */
#if (!GTK_CHECK_VERSION(2,4,0))
#define GTK_WRAP_WORD_CHAR GTK_WRAP_WORD
#endif

#define TOOLTIP_TIMEOUT 500

/* GTK+ 2.0 hack */
#if (!GTK_CHECK_VERSION(2,2,0))
#define gtk_widget_get_clipboard(x, y) gtk_clipboard_get(y)
#endif

static GtkTextViewClass *parent_class = NULL;

struct scalable_data {
      GtkIMHtmlScalable *scalable;
      GtkTextMark *mark;
};

typedef struct {
      GtkIMHtmlScalable *image;
      gpointer data;
      gsize datasize;
} GtkIMHtmlImageSave;

struct im_image_data {
      int id;
      GtkTextMark *mark;
};

struct _GtkIMHtmlLink
{
      GtkIMHtml *imhtml;
      gchar *url;
      GtkTextTag *tag;
};

typedef struct _GtkIMHtmlProtocol
{
      char *name;
      int length;

      gboolean (*activate)(GtkIMHtml *imhtml, GtkIMHtmlLink *link);
      gboolean (*context_menu)(GtkIMHtml *imhtml, GtkIMHtmlLink *link, GtkWidget *menu);
} GtkIMHtmlProtocol;

static gboolean
gtk_text_view_drag_motion (GtkWidget        *widget,
                           GdkDragContext   *context,
                           gint              x,
                           gint              y,
                           guint             time);

static void preinsert_cb(GtkTextBuffer *buffer, GtkTextIter *iter, gchar *text, gint len, GtkIMHtml *imhtml);
static void insert_cb(GtkTextBuffer *buffer, GtkTextIter *iter, gchar *text, gint len, GtkIMHtml *imhtml);
static void delete_cb(GtkTextBuffer *buffer, GtkTextIter *iter, GtkTextIter *end, GtkIMHtml *imhtml);
static void insert_ca_cb(GtkTextBuffer *buffer, GtkTextIter *arg1, GtkTextChildAnchor *arg2, gpointer user_data);
static void gtk_imhtml_apply_tags_on_insert(GtkIMHtml *imhtml, GtkTextIter *start, GtkTextIter *end);
void gtk_imhtml_close_tags(GtkIMHtml *imhtml, GtkTextIter *iter);
static void gtk_imhtml_link_drop_cb(GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time, gpointer user_data);
static void gtk_imhtml_link_drag_rcv_cb(GtkWidget *widget, GdkDragContext *dc, guint x, guint y, GtkSelectionData *sd, guint info, guint t, GtkIMHtml *imhtml);
static void mark_set_cb(GtkTextBuffer *buffer, GtkTextIter *arg1, GtkTextMark *mark, GtkIMHtml *imhtml);
static void hijack_menu_cb(GtkIMHtml *imhtml, GtkMenu *menu, gpointer data);
static void paste_received_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, gpointer data);
static void paste_plaintext_received_cb (GtkClipboard *clipboard, const gchar *text, gpointer data);
static void imhtml_paste_insert(GtkIMHtml *imhtml, const char *text, gboolean plaintext);
static void imhtml_toggle_bold(GtkIMHtml *imhtml);
static void imhtml_toggle_italic(GtkIMHtml *imhtml);
static void imhtml_toggle_strike(GtkIMHtml *imhtml);
static void imhtml_toggle_underline(GtkIMHtml *imhtml);
static void imhtml_font_grow(GtkIMHtml *imhtml);
static void imhtml_font_shrink(GtkIMHtml *imhtml);
static void imhtml_clear_formatting(GtkIMHtml *imhtml);
static int gtk_imhtml_is_protocol(const char *text);
static void gtk_imhtml_activate_tag(GtkIMHtml *imhtml, GtkTextTag *tag);
static void gtk_imhtml_link_destroy(GtkIMHtmlLink *link);

/* POINT_SIZE converts from AIM font sizes to a point size scale factor. */
#define MAX_FONT_SIZE 7
#define POINT_SIZE(x) (_point_sizes [MIN ((x > 0 ? x : 1), MAX_FONT_SIZE) - 1])
static const gdouble _point_sizes [] = { .85, .95, 1, 1.2, 1.44, 1.728, 2.0736};

enum {
      TARGET_HTML,
      TARGET_UTF8_STRING,
      TARGET_COMPOUND_TEXT,
      TARGET_STRING,
      TARGET_TEXT
};

enum {
      URL_CLICKED,
      BUTTONS_UPDATE,
      TOGGLE_FORMAT,
      CLEAR_FORMAT,
      UPDATE_FORMAT,
      MESSAGE_SEND,
      UNDO,
      REDO,
      LAST_SIGNAL
};
static guint signals [LAST_SIGNAL] = { 0 };

static char *html_clipboard = NULL;
static char *text_clipboard = NULL;
static GtkClipboard *clipboard_selection = NULL;

static const GtkTargetEntry selection_targets[] = {
#ifndef _WIN32
      { "text/html", 0, TARGET_HTML },
#else
      { "HTML Format", 0, TARGET_HTML },
#endif
      { "UTF8_STRING", 0, TARGET_UTF8_STRING },
      { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
      { "STRING", 0, TARGET_STRING },
      { "TEXT", 0, TARGET_TEXT}};

static const GtkTargetEntry link_drag_drop_targets[] = {
      GTK_IMHTML_DND_TARGETS
};

#ifdef _WIN32
static gchar *
clipboard_win32_to_html(char *clipboard) {
      const char *header;
      const char *begin, *end;
      gint start = 0;
      gint finish = 0;
      gchar *html;
      gchar **split;
      int clipboard_length = 0;

#if 0 /* Debugging for Windows clipboard */
      FILE *fd;

      purple_debug_info("imhtml clipboard", "from clipboard: %s\n", clipboard);

      fd = g_fopen("e:\\purplecb.txt", "wb");
      fprintf(fd, "%s", clipboard);
      fclose(fd);
#endif

      clipboard_length = strlen(clipboard);

      if (!(header = strstr(clipboard, "StartFragment:")) || (header - clipboard) >= clipboard_length)
            return NULL;
      sscanf(header, "StartFragment:%d", &start);

      if (!(header = strstr(clipboard, "EndFragment:")) || (header - clipboard) >= clipboard_length)
            return NULL;
      sscanf(header, "EndFragment:%d", &finish);

      if (finish > clipboard_length)
            finish = clipboard_length;

      if (start > finish)
            start = finish;

      begin = clipboard + start;

      end = clipboard + finish;

      html = g_strndup(begin, end - begin);

      /* any newlines in the string will now be \r\n, so we need to strip out the \r */
      split = g_strsplit(html, "\r\n", 0);
      g_free(html);
      html = g_strjoinv("\n", split);
      g_strfreev(split);

#if 0 /* Debugging for Windows clipboard */
      purple_debug_info("imhtml clipboard", "HTML fragment: '%s'\n", html);
#endif

      return html;
}

static gchar *
clipboard_html_to_win32(char *html) {
      int length;
      GString *clipboard;

      if (html == NULL)
            return NULL;

      length = strlen(html);
      clipboard = g_string_new ("Version:1.0\r\n");
      g_string_append(clipboard, "StartHTML:0000000105\r\n");
      g_string_append_printf(clipboard, "EndHTML:%010d\r\n", 147 + length);
      g_string_append(clipboard, "StartFragment:0000000127\r\n");
      g_string_append_printf(clipboard, "EndFragment:%010d\r\n", 127 + length);
      g_string_append(clipboard, "<!--StartFragment-->\r\n");
      g_string_append(clipboard, html);
      g_string_append(clipboard, "\r\n<!--EndFragment-->");

      return g_string_free(clipboard, FALSE);
}

static gboolean clipboard_paste_html_win32(GtkIMHtml *imhtml) {
      gboolean pasted = FALSE;

      /* Win32 clipboard format value, and functions to convert back and
       * forth between HTML and the clipboard format.
       */
      static UINT win_html_fmt = 0;

      /* Register HTML Format as desired clipboard format */
      if (!win_html_fmt)
            win_html_fmt = RegisterClipboardFormat("HTML Format");

      if (gtk_text_view_get_editable(GTK_TEXT_VIEW(imhtml))
                        && IsClipboardFormatAvailable(win_html_fmt)) {
            gboolean error_reading_clipboard = FALSE;
            HWND hwnd = GDK_WINDOW_HWND(GTK_WIDGET(imhtml)->window);

            if (OpenClipboard(hwnd)) {
                  HGLOBAL hdata = GetClipboardData(win_html_fmt);
                  if (hdata == NULL) {
                        if (GetLastError() != ERROR_SUCCESS)
                              error_reading_clipboard = TRUE;
                  } else {
                        char *buffer = GlobalLock(hdata);
                        if (buffer == NULL) {
                              error_reading_clipboard = TRUE;
                        } else {
                              char *text = clipboard_win32_to_html(
                                          buffer);
                              imhtml_paste_insert(imhtml, text,
                                          FALSE);
                              g_free(text);
                              pasted = TRUE;
                        }
                        GlobalUnlock(hdata);
                  }

                  CloseClipboard();
            } else {
                  error_reading_clipboard = TRUE;
            }

            if (error_reading_clipboard) {
                  gchar *err_msg = g_win32_error_message(GetLastError());
                  purple_debug_info("html clipboard",
                              "Unable to read clipboard data: %s\n",
                              err_msg ? err_msg : "Unknown Error");
                  g_free(err_msg);
            }
      }

      return pasted;
}
#endif

static GtkSmileyTree*
gtk_smiley_tree_new (void)
{
      return g_new0 (GtkSmileyTree, 1);
}

static void
gtk_smiley_tree_insert (GtkSmileyTree *tree,
                  GtkIMHtmlSmiley *smiley)
{
      GtkSmileyTree *t = tree;
      const gchar *x = smiley->smile;

      if (!(*x))
            return;

      do {
            gchar *pos;
            gint index;

            if (!t->values)
                  t->values = g_string_new ("");

            pos = strchr (t->values->str, *x);
            if (!pos) {
                  t->values = g_string_append_c (t->values, *x);
                  index = t->values->len - 1;
                  t->children = g_realloc (t->children, t->values->len * sizeof (GtkSmileyTree *));
                  t->children [index] = g_new0 (GtkSmileyTree, 1);
            } else
                  index = GPOINTER_TO_INT(pos) - GPOINTER_TO_INT(t->values->str);

            t = t->children [index];

            x++;
      } while (*x);

      t->image = smiley;
}


static void
gtk_smiley_tree_destroy (GtkSmileyTree *tree)
{
      GSList *list = g_slist_prepend (NULL, tree);

      while (list) {
            GtkSmileyTree *t = list->data;
            gsize i;
            list = g_slist_remove(list, t);
            if (t && t->values) {
                  for (i = 0; i < t->values->len; i++)
                        list = g_slist_prepend (list, t->children [i]);
                  g_string_free (t->values, TRUE);
                  g_free (t->children);
            }

            g_free (t);
      }
}

static void (*parent_size_allocate)(GtkWidget *widget, GtkAllocation *alloc);

static void gtk_imhtml_size_allocate(GtkWidget *widget, GtkAllocation *alloc)
{
      GtkIMHtml *imhtml = GTK_IMHTML(widget);
      GdkRectangle rect;
      int xminus;
      int height = 0, y = 0;
      GtkTextIter iter;
      gboolean scroll = TRUE;

      gtk_text_buffer_get_end_iter(imhtml->text_buffer, &iter);

      gtk_text_view_get_visible_rect(GTK_TEXT_VIEW(widget), &rect);
      gtk_text_view_get_line_yrange(GTK_TEXT_VIEW(imhtml), &iter, &y, &height);

      if (((y + height) - (rect.y + rect.height)) > height &&
                  gtk_text_buffer_get_char_count(imhtml->text_buffer)) {
            scroll = FALSE;
      }

      if(imhtml->old_rect.width != rect.width || imhtml->old_rect.height != rect.height) {
            GList *iter = GTK_IMHTML(widget)->scalables;

            xminus = gtk_text_view_get_left_margin(GTK_TEXT_VIEW(widget)) +
                     gtk_text_view_get_right_margin(GTK_TEXT_VIEW(widget));

            while(iter){
                  struct scalable_data *sd = iter->data;
                  GtkIMHtmlScalable *scale = GTK_IMHTML_SCALABLE(sd->scalable);
                  scale->scale(scale, rect.width - xminus, rect.height);

                  iter = iter->next;
            }
      }

      imhtml->old_rect = rect;
      parent_size_allocate(widget, alloc);

      /* Don't scroll here if we're in the middle of a smooth scroll */
      if (scroll && imhtml->scroll_time == NULL &&
          GTK_WIDGET_REALIZED(imhtml))
            gtk_imhtml_scroll_to_end(imhtml, FALSE);
}

#define DEFAULT_SEND_COLOR "#204a87"
#define DEFAULT_RECV_COLOR "#cc0000"
#define DEFAULT_HIGHLIGHT_COLOR "#AF7F00"
#define DEFAULT_ACTION_COLOR "#062585"
#define DEFAULT_WHISPER_ACTION_COLOR "#6C2585"
#define DEFAULT_WHISPER_COLOR "#00FF00"

static void (*parent_style_set)(GtkWidget *widget, GtkStyle *prev_style);

static void
gtk_imhtml_style_set(GtkWidget *widget, GtkStyle *prev_style)
{
      int i;
      struct {
            const char *tag;
            const char *color;
            const char *def;
      } styles[] = {
            {"send-name", "send-name-color", DEFAULT_SEND_COLOR},
            {"receive-name", "receive-name-color", DEFAULT_RECV_COLOR},
            {"highlight-name", "highlight-name-color", DEFAULT_HIGHLIGHT_COLOR},
            {"action-name", "action-name-color", DEFAULT_ACTION_COLOR},
            {"whisper-action-name", "whisper-action-name-color", DEFAULT_WHISPER_ACTION_COLOR},
            {"whisper-name", "whisper-name-color", DEFAULT_WHISPER_COLOR},
            {NULL, NULL, NULL}
      };
      GtkIMHtml *imhtml = GTK_IMHTML(widget);
      GtkTextTagTable *table = gtk_text_buffer_get_tag_table(imhtml->text_buffer);

      for (i = 0; styles[i].tag; i++) {
            GdkColor *color = NULL;
            GtkTextTag *tag = gtk_text_tag_table_lookup(table, styles[i].tag);
            if (!tag) {
                  purple_debug_warning("gtkimhtml", "Cannot find tag '%s'. This should never happen. Please file a bug.\n", styles[i].tag);
                  continue;
            }
            gtk_widget_style_get(widget, styles[i].color, &color, NULL);
            if (color) {
                  g_object_set(tag, "foreground-gdk", color, NULL);
                  gdk_color_free(color);
            } else {
                  GdkColor defcolor;
                  gdk_color_parse(styles[i].def, &defcolor);
                  g_object_set(tag, "foreground-gdk", &defcolor, NULL);
            }
      }
      parent_style_set(widget, prev_style);
}

static gboolean
imhtml_get_iter_bounds(GtkIMHtml *imhtml, GtkTextIter *start, GtkTextIter *end)
{
      if (imhtml->wbfo) {
            gtk_text_buffer_get_bounds(imhtml->text_buffer, start, end);
            return TRUE;
      } else if (imhtml->editable) {
            if (!gtk_text_buffer_get_selection_bounds(imhtml->text_buffer, start, end)) {
                  GtkTextMark *mark = gtk_text_buffer_get_insert(imhtml->text_buffer);
                  gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, start, mark);
                  *end = *start;
            }
            return TRUE;
      }

      return FALSE;
}

static void
gtk_imhtml_set_link_color(GtkIMHtml *imhtml, GtkTextTag *tag)
{
      GdkColor *color = NULL;
      gboolean visited = !!g_object_get_data(G_OBJECT(tag), "visited");
      gtk_widget_style_get(GTK_WIDGET(imhtml), visited ? "hyperlink-visited-color" : "hyperlink-color", &color, NULL);
      if (color) {
            g_object_set(G_OBJECT(tag), "foreground-gdk", color, NULL);
            gdk_color_free(color);
      } else {
            g_object_set(G_OBJECT(tag), "foreground", visited ? "#800000" : "blue", NULL);
      }
}

static gint
gtk_imhtml_tip_paint (GtkIMHtml *imhtml)
{
      PangoLayout *layout;

      g_return_val_if_fail(GTK_IS_IMHTML(imhtml), FALSE);

      layout = gtk_widget_create_pango_layout(imhtml->tip_window, imhtml->tip);

      gtk_paint_flat_box (imhtml->tip_window->style, imhtml->tip_window->window,
                                    GTK_STATE_NORMAL, GTK_SHADOW_OUT, NULL, imhtml->tip_window,
                                    "tooltip", 0, 0, -1, -1);

      gtk_paint_layout (imhtml->tip_window->style, imhtml->tip_window->window, GTK_STATE_NORMAL,
                                FALSE, NULL, imhtml->tip_window, NULL, 4, 4, layout);

      g_object_unref(layout);
      return FALSE;
}

static gint
gtk_imhtml_tip (gpointer data)
{
      GtkIMHtml *imhtml = data;
      PangoFontMetrics *font_metrics;
      PangoLayout *layout;
      PangoFont *font;

      gint gap, x, y, h, w, scr_w, baseline_skip;

      g_return_val_if_fail(GTK_IS_IMHTML(imhtml), FALSE);

      if (!imhtml->tip || !GTK_WIDGET_DRAWABLE (GTK_WIDGET(imhtml))) {
            imhtml->tip_timer = 0;
            return FALSE;
      }

      if (imhtml->tip_window){
            gtk_widget_destroy (imhtml->tip_window);
            imhtml->tip_window = NULL;
      }

      imhtml->tip_timer = 0;
      imhtml->tip_window = gtk_window_new (GTK_WINDOW_POPUP);
      gtk_widget_set_app_paintable (imhtml->tip_window, TRUE);
      gtk_window_set_title(GTK_WINDOW(imhtml->tip_window), "GtkIMHtml");
      gtk_window_set_resizable (GTK_WINDOW (imhtml->tip_window), FALSE);
      gtk_widget_set_name (imhtml->tip_window, "gtk-tooltips");
#if GTK_CHECK_VERSION(2,10,0)
      gtk_window_set_type_hint (GTK_WINDOW (imhtml->tip_window),
            GDK_WINDOW_TYPE_HINT_TOOLTIP);
#endif
      g_signal_connect_swapped (G_OBJECT (imhtml->tip_window), "expose_event",
                                            G_CALLBACK (gtk_imhtml_tip_paint), imhtml);

      gtk_widget_ensure_style (imhtml->tip_window);
      layout = gtk_widget_create_pango_layout(imhtml->tip_window, imhtml->tip);
      font = pango_context_load_font(pango_layout_get_context(layout),
                        imhtml->tip_window->style->font_desc);

      if (font == NULL) {
            char *tmp = pango_font_description_to_string(
                              imhtml->tip_window->style->font_desc);

            purple_debug(PURPLE_DEBUG_ERROR, "gtk_imhtml_tip",
                  "pango_context_load_font() couldn't load font: '%s'\n",
                  tmp);
            g_free(tmp);

            g_object_unref(layout);
            return FALSE;
      }

      font_metrics = pango_font_get_metrics(font, NULL);

      pango_layout_get_pixel_size(layout, &scr_w, NULL);
      gap = PANGO_PIXELS((pango_font_metrics_get_ascent(font_metrics) +
                                 pango_font_metrics_get_descent(font_metrics))/ 4);

      if (gap < 2)
            gap = 2;
      baseline_skip = PANGO_PIXELS(pango_font_metrics_get_ascent(font_metrics) +
                                                pango_font_metrics_get_descent(font_metrics));
      w = 8 + scr_w;
      h = 8 + baseline_skip;

      gdk_window_get_pointer (NULL, &x, &y, NULL);
      if (GTK_WIDGET_NO_WINDOW (GTK_WIDGET(imhtml)))
            y += GTK_WIDGET(imhtml)->allocation.y;

      scr_w = gdk_screen_width();

      x -= ((w >> 1) + 4);

      if ((x + w) > scr_w)
            x -= (x + w) - scr_w;
      else if (x < 0)
            x = 0;

      y = y + PANGO_PIXELS(pango_font_metrics_get_ascent(font_metrics) +
                                    pango_font_metrics_get_descent(font_metrics));

      gtk_widget_set_size_request (imhtml->tip_window, w, h);
      gtk_window_move (GTK_WINDOW(imhtml->tip_window), x, y);
      gtk_widget_show (imhtml->tip_window);

      pango_font_metrics_unref(font_metrics);
      g_object_unref(font);
      g_object_unref(layout);

      return FALSE;
}

static gboolean
gtk_motion_event_notify(GtkWidget *imhtml, GdkEventMotion *event, gpointer data)
{
      GtkTextIter iter;
      GdkWindow *win = event->window;
      int x, y;
      char *tip = NULL;
      GSList *tags = NULL, *templist = NULL;
      GtkTextTag *tag = NULL, *oldprelit_tag;
      GtkTextChildAnchor* anchor;
      gboolean hand = TRUE;
      GdkCursor *cursor = NULL;

      oldprelit_tag = GTK_IMHTML(imhtml)->prelit_tag;

      gdk_window_get_pointer(GTK_WIDGET(imhtml)->window, NULL, NULL, NULL);
      gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(imhtml), GTK_TEXT_WINDOW_WIDGET,
                                            event->x, event->y, &x, &y);
      gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(imhtml), &iter, x, y);
      tags = gtk_text_iter_get_tags(&iter);

      templist = tags;
      while (templist) {
            tag = templist->data;
            tip = g_object_get_data(G_OBJECT(tag), "link_url");
            if (tip)
                  break;
            templist = templist->next;
      }

      if (tip && (!tag || !g_object_get_data(G_OBJECT(tag), "visited"))) {
            GTK_IMHTML(imhtml)->prelit_tag = tag;
            if (tag != oldprelit_tag) {
                  GdkColor *pre = NULL;
                  gtk_widget_style_get(GTK_WIDGET(imhtml), "hyperlink-prelight-color", &pre, NULL);
                  if (pre) {
                        g_object_set(G_OBJECT(tag), "foreground-gdk", pre, NULL);
                        gdk_color_free(pre);
                  } else
                        g_object_set(G_OBJECT(tag), "foreground", "#70a0ff", NULL);
            }
      } else {
            GTK_IMHTML(imhtml)->prelit_tag = NULL;
      }

      if ((oldprelit_tag != NULL) && (GTK_IMHTML(imhtml)->prelit_tag != oldprelit_tag)) {
            gtk_imhtml_set_link_color(GTK_IMHTML(imhtml), oldprelit_tag);
      }

      if (GTK_IMHTML(imhtml)->tip) {
            if ((tip == GTK_IMHTML(imhtml)->tip)) {
                  g_slist_free(tags);
                  return FALSE;
            }
            /* We've left the cell.  Remove the timeout and create a new one below */
            if (GTK_IMHTML(imhtml)->tip_window) {
                  gtk_widget_destroy(GTK_IMHTML(imhtml)->tip_window);
                  GTK_IMHTML(imhtml)->tip_window = NULL;
            }
            if (GTK_IMHTML(imhtml)->editable)
                  cursor = GTK_IMHTML(imhtml)->text_cursor;
            else
                  cursor = GTK_IMHTML(imhtml)->arrow_cursor;
            if (GTK_IMHTML(imhtml)->tip_timer)
                  g_source_remove(GTK_IMHTML(imhtml)->tip_timer);
            GTK_IMHTML(imhtml)->tip_timer = 0;
      }

      /* If we don't have a tip from a URL, let's see if we have a tip from a smiley */
      anchor = gtk_text_iter_get_child_anchor(&iter);
      if (anchor) {
            tip = g_object_get_data(G_OBJECT(anchor), "gtkimhtml_tiptext");
            hand = FALSE;
      }

      if (tip && *tip) {
            GTK_IMHTML(imhtml)->tip_timer = g_timeout_add (TOOLTIP_TIMEOUT,
                                                 gtk_imhtml_tip, imhtml);
      } else if (!tip) {
            hand = FALSE;
            for (templist = tags; templist; templist = templist->next) {
                  tag = templist->data;
                  if ((tip = g_object_get_data(G_OBJECT(tag), "cursor"))) {
                        hand = TRUE;
                        break;
                  }
            }
      }

      if (hand && !(GTK_IMHTML(imhtml)->editable))
            cursor = GTK_IMHTML(imhtml)->hand_cursor;

      if (cursor)
            gdk_window_set_cursor(win, cursor);

      GTK_IMHTML(imhtml)->tip = tip;
      g_slist_free(tags);
      return FALSE;
}

static gboolean
gtk_enter_event_notify(GtkWidget *imhtml, GdkEventCrossing *event, gpointer data)
{
      if (GTK_IMHTML(imhtml)->editable)
            gdk_window_set_cursor(
                        gtk_text_view_get_window(GTK_TEXT_VIEW(imhtml),
                              GTK_TEXT_WINDOW_TEXT),
                        GTK_IMHTML(imhtml)->text_cursor);
      else
            gdk_window_set_cursor(
                        gtk_text_view_get_window(GTK_TEXT_VIEW(imhtml),
                              GTK_TEXT_WINDOW_TEXT),
                        GTK_IMHTML(imhtml)->arrow_cursor);

      /* propagate the event normally */
      return FALSE;
}

static gboolean
gtk_leave_event_notify(GtkWidget *imhtml, GdkEventCrossing *event, gpointer data)
{
      /* when leaving the widget, clear any current & pending tooltips and restore the cursor */
      if (GTK_IMHTML(imhtml)->prelit_tag) {
            gtk_imhtml_set_link_color(GTK_IMHTML(imhtml), GTK_IMHTML(imhtml)->prelit_tag);
            GTK_IMHTML(imhtml)->prelit_tag = NULL;
      }

      if (GTK_IMHTML(imhtml)->tip_window) {
            gtk_widget_destroy(GTK_IMHTML(imhtml)->tip_window);
            GTK_IMHTML(imhtml)->tip_window = NULL;
      }
      if (GTK_IMHTML(imhtml)->tip_timer) {
            g_source_remove(GTK_IMHTML(imhtml)->tip_timer);
            GTK_IMHTML(imhtml)->tip_timer = 0;
      }
      gdk_window_set_cursor(
                  gtk_text_view_get_window(GTK_TEXT_VIEW(imhtml),
                        GTK_TEXT_WINDOW_TEXT), NULL);

      /* propagate the event normally */
      return FALSE;
}

#if (!GTK_CHECK_VERSION(2,2,0))
/*
 * XXX - This should be removed eventually.
 *
 * This function exists to work around a gross bug in GtkTextView.
 * Basically, we short circuit ctrl+a and ctrl+end because they make
 * el program go boom.
 *
 * It's supposed to be fixed in gtk2.2.  You can view the bug report at
 * http://bugzilla.gnome.org/show_bug.cgi?id=107939
 */
static gboolean
gtk_key_pressed_cb(GtkIMHtml *imhtml, GdkEventKey *event, gpointer data)
{
      if (event->state & GDK_CONTROL_MASK) {
            switch (event->keyval) {
                  case 'a':
                  case GDK_Home:
                  case GDK_End:
                        return TRUE;
            }
      }
      return FALSE;
}
#endif /* !(GTK+ >= 2.2.0) */

static gint
gtk_imhtml_expose_event (GtkWidget      *widget,
                   GdkEventExpose *event)
{
      GtkTextIter start, end, cur;
      int buf_x, buf_y;
      GdkRectangle visible_rect;
      GdkGC *gc = gdk_gc_new(GDK_DRAWABLE(event->window));
      GdkColor gcolor;

      gtk_text_view_get_visible_rect(GTK_TEXT_VIEW(widget), &visible_rect);
      gtk_text_view_buffer_to_window_coords(GTK_TEXT_VIEW(widget),
                                    GTK_TEXT_WINDOW_TEXT,
                                    visible_rect.x,
                                    visible_rect.y,
                                    &visible_rect.x,
                                    &visible_rect.y);

      gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(widget), GTK_TEXT_WINDOW_TEXT,
                                            event->area.x, event->area.y, &buf_x, &buf_y);

      if (GTK_IMHTML(widget)->editable || GTK_IMHTML(widget)->wbfo) {

            if (GTK_IMHTML(widget)->edit.background) {
                  gdk_color_parse(GTK_IMHTML(widget)->edit.background, &gcolor);
                  gdk_gc_set_rgb_fg_color(gc, &gcolor);
            } else {
                  gdk_gc_set_rgb_fg_color(gc, &(widget->style->base[GTK_WIDGET_STATE(widget)]));
            }

            gdk_draw_rectangle(event->window,
                           gc,
                           TRUE,
                           visible_rect.x, visible_rect.y, visible_rect.width, visible_rect.height);
            g_object_unref(G_OBJECT(gc));

            if (GTK_WIDGET_CLASS (parent_class)->expose_event)
                  return (* GTK_WIDGET_CLASS (parent_class)->expose_event)
                        (widget, event);
            return FALSE;

      }

      gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(widget), &start, buf_x, buf_y);
      gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(widget), &end,
                                         buf_x + event->area.width, buf_y + event->area.height);

      gtk_text_iter_order(&start, &end);

      cur = start;

      while (gtk_text_iter_in_range(&cur, &start, &end)) {
            GSList *tags = gtk_text_iter_get_tags(&cur);
            GSList *l;

            for (l = tags; l; l = l->next) {
                  GtkTextTag *tag = l->data;
                  GdkRectangle rect;
                  GdkRectangle tag_area;
                  const char *color;

                  if (strncmp(tag->name, "BACKGROUND ", 11))
                        continue;

                  if (gtk_text_iter_ends_tag(&cur, tag))
                        continue;

                  gtk_text_view_get_iter_location(GTK_TEXT_VIEW(widget), &cur, &tag_area);
                  gtk_text_view_buffer_to_window_coords(GTK_TEXT_VIEW(widget),
                                                        GTK_TEXT_WINDOW_TEXT,
                                                        tag_area.x,
                                                        tag_area.y,
                                                        &tag_area.x,
                                                        &tag_area.y);
                  rect.x = visible_rect.x;
                  rect.y = tag_area.y;
                  rect.width = visible_rect.width;

                  do
                        gtk_text_iter_forward_to_tag_toggle(&cur, tag);
                  while (!gtk_text_iter_is_end(&cur) && gtk_text_iter_begins_tag(&cur, tag));

                  gtk_text_view_get_iter_location(GTK_TEXT_VIEW(widget), &cur, &tag_area);
                  gtk_text_view_buffer_to_window_coords(GTK_TEXT_VIEW(widget),
                                                        GTK_TEXT_WINDOW_TEXT,
                                                        tag_area.x,
                                                        tag_area.y,
                                                        &tag_area.x,
                                                        &tag_area.y);


                  rect.height = tag_area.y + tag_area.height - rect.y
                        + gtk_text_view_get_pixels_above_lines(GTK_TEXT_VIEW(widget))
                        + gtk_text_view_get_pixels_below_lines(GTK_TEXT_VIEW(widget));

                  color = tag->name + 11;

                  if (!gdk_color_parse(color, &gcolor)) {
                        gchar tmp[8];
                        tmp[0] = '#';
                        strncpy(&tmp[1], color, 7);
                        tmp[7] = '\0';
                        if (!gdk_color_parse(tmp, &gcolor))
                              gdk_color_parse("white", &gcolor);
                  }
                  gdk_gc_set_rgb_fg_color(gc, &gcolor);

                  gdk_draw_rectangle(event->window,
                                     gc,
                                     TRUE,
                                     rect.x, rect.y, rect.width, rect.height);
                  gtk_text_iter_backward_char(&cur); /* go back one, in case the end is the begining is the end
                                                      * note that above, we always moved cur ahead by at least
                                                      * one character */
                  break;
            }

            g_slist_free(tags);

            /* loop until another tag begins, or no tag begins */
            while (gtk_text_iter_forward_to_tag_toggle(&cur, NULL) &&
                   !gtk_text_iter_is_end(&cur) &&
                   !gtk_text_iter_begins_tag(&cur, NULL));
      }

      g_object_unref(G_OBJECT(gc));

      if (GTK_WIDGET_CLASS (parent_class)->expose_event)
            return (* GTK_WIDGET_CLASS (parent_class)->expose_event)
                  (widget, event);

      return FALSE;
}


static void paste_unformatted_cb(GtkMenuItem *menu, GtkIMHtml *imhtml)
{
      GtkClipboard *clipboard = gtk_widget_get_clipboard(GTK_WIDGET(imhtml), GDK_SELECTION_CLIPBOARD);

      gtk_clipboard_request_text(clipboard, paste_plaintext_received_cb, imhtml);

}

static void clear_formatting_cb(GtkMenuItem *menu, GtkIMHtml *imhtml)
{
      gtk_imhtml_clear_formatting(imhtml);
}

static void disable_smiley_selected(GtkMenuItem *item, GtkIMHtml *imhtml)
{
      GtkTextIter start, end;
      GtkTextMark *mark;
      char *text;

      if (!gtk_text_buffer_get_selection_bounds(imhtml->text_buffer, &start, &end))
            return;

      text = gtk_imhtml_get_markup_range(imhtml, &start, &end);

      mark = gtk_text_buffer_get_selection_bound(imhtml->text_buffer);
      gtk_text_buffer_delete_selection(imhtml->text_buffer, FALSE, FALSE);

      gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &start, mark);
      gtk_imhtml_insert_html_at_iter(imhtml, text, GTK_IMHTML_NO_NEWLINE | GTK_IMHTML_NO_SMILEY, &start);

      g_free(text);
}

static void hijack_menu_cb(GtkIMHtml *imhtml, GtkMenu *menu, gpointer data)
{
      GtkWidget *menuitem;
      GtkTextIter start, end;

      menuitem = gtk_menu_item_new_with_mnemonic(_("Paste as Plain _Text"));
      gtk_widget_show(menuitem);
      /*
       * TODO: gtk_clipboard_wait_is_text_available() iterates the glib
       *       mainloop, which tends to be a source of bugs.  It would
       *       be good to audit this or change it to not wait.
       */
      gtk_widget_set_sensitive(menuitem,
                              (imhtml->editable &&
                              gtk_clipboard_wait_is_text_available(
                              gtk_widget_get_clipboard(GTK_WIDGET(imhtml), GDK_SELECTION_CLIPBOARD))));
      /* put it after "Paste" */
      gtk_menu_shell_insert(GTK_MENU_SHELL(menu), menuitem, 3);

      g_signal_connect(G_OBJECT(menuitem), "activate",
                               G_CALLBACK(paste_unformatted_cb), imhtml);

      menuitem = gtk_menu_item_new_with_mnemonic(_("_Reset formatting"));
      gtk_widget_show(menuitem);
      gtk_widget_set_sensitive(menuitem, imhtml->editable);
      /* put it after Delete */
      gtk_menu_shell_insert(GTK_MENU_SHELL(menu), menuitem, 5);

      g_signal_connect(G_OBJECT(menuitem), "activate", G_CALLBACK(clear_formatting_cb), imhtml);

      menuitem = gtk_menu_item_new_with_mnemonic(_("Disable _smileys in selected text"));
      gtk_widget_show(menuitem);
      if (gtk_text_buffer_get_selection_bounds(imhtml->text_buffer, &start, &end)) {
            g_signal_connect(G_OBJECT(menuitem), "activate", G_CALLBACK(disable_smiley_selected), imhtml);
      } else {
            gtk_widget_set_sensitive(menuitem, FALSE);
      }
      gtk_menu_shell_insert(GTK_MENU_SHELL(menu), menuitem, 6);
}

static char *
ucs2_order(gboolean swap)
{
      gboolean be;

      be = G_BYTE_ORDER == G_BIG_ENDIAN;
      be = swap ? be : !be;

      if (be)
            return "UTF-16BE";
      else
            return "UTF-16LE";

}

/* Convert from UTF-16LE to UTF-8, stripping the BOM if one is present.*/
static gchar *
utf16_to_utf8_with_bom_check(gchar *data, guint len) {
      char *fromcode = NULL;
      GError *error = NULL;
      guint16 c;
      gchar *utf8_ret;

      /*
       * Unicode Techinical Report 20
       * ( http://www.unicode.org/unicode/reports/tr20/ ) says to treat an
       * initial 0xfeff (ZWNBSP) as a byte order indicator so that is
       * what we do.  If there is no indicator assume it is in the default
       * order
       */

      memcpy(&c, data, 2);
      switch (c) {
      case 0xfeff:
      case 0xfffe:
            fromcode = ucs2_order(c == 0xfeff);
            data += 2;
            len -= 2;
            break;
      default:
            fromcode = "UTF-16";
            break;
      }

      utf8_ret = g_convert(data, len, "UTF-8", fromcode, NULL, NULL, &error);

      if (error) {
            purple_debug_warning("gtkimhtml", "g_convert error: %s\n", error->message);
            g_error_free(error);
      }
      return utf8_ret;
}


static void gtk_imhtml_clipboard_get(GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, GtkIMHtml *imhtml) {
      char *text = NULL;
      gboolean primary = (clipboard != clipboard_selection);
      GtkTextIter start, end;

      if (primary) {
            GtkTextMark *sel = NULL, *ins = NULL;

            g_return_if_fail(imhtml != NULL);

            ins = gtk_text_buffer_get_insert(imhtml->text_buffer);
            sel = gtk_text_buffer_get_selection_bound(imhtml->text_buffer);
            gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &start, sel);
            gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &end, ins);
      }

      if (info == TARGET_HTML) {
            char *selection;
#ifndef _WIN32
            gsize len;
            if (primary) {
                  text = gtk_imhtml_get_markup_range(imhtml, &start, &end);
            } else
                  text = html_clipboard;

            /* Mozilla asks that we start our text/html with the Unicode byte order mark */
            selection = g_convert(text, -1, "UTF-16", "UTF-8", NULL, &len, NULL);
            gtk_selection_data_set(selection_data, gdk_atom_intern("text/html", FALSE), 16, (const guchar *)selection, len);
#else
            selection = clipboard_html_to_win32(html_clipboard);
            gtk_selection_data_set(selection_data, gdk_atom_intern("HTML Format", FALSE), 8, (const guchar *)selection, strlen(selection));
#endif
            g_free(selection);
      } else {
            if (primary) {
                  text = gtk_imhtml_get_text(imhtml, &start, &end);
            } else
                  text = text_clipboard;
            gtk_selection_data_set_text(selection_data, text, strlen(text));
      }
      if (primary) /* This was allocated here */
            g_free(text);
 }

static void gtk_imhtml_primary_clipboard_clear(GtkClipboard *clipboard, GtkIMHtml *imhtml)
{
      GtkTextIter insert;
      GtkTextIter selection_bound;

      gtk_text_buffer_get_iter_at_mark (imhtml->text_buffer, &insert,
                                gtk_text_buffer_get_mark (imhtml->text_buffer, "insert"));
      gtk_text_buffer_get_iter_at_mark (imhtml->text_buffer, &selection_bound,
                                gtk_text_buffer_get_mark (imhtml->text_buffer, "selection_bound"));

      if (!gtk_text_iter_equal (&insert, &selection_bound))
            gtk_text_buffer_move_mark (imhtml->text_buffer,
                                 gtk_text_buffer_get_mark (imhtml->text_buffer, "selection_bound"),
                                 &insert);
}

static void gtk_imhtml_clipboard_clear (GtkClipboard *clipboard, GtkSelectionData *sel_data,
                         guint info, gpointer user_data_or_owner)
{
}

static void copy_clipboard_cb(GtkIMHtml *imhtml, gpointer unused)
{
      GtkTextIter start, end;
      if (gtk_text_buffer_get_selection_bounds(imhtml->text_buffer, &start, &end)) {
            if (!clipboard_selection)
                  clipboard_selection = gtk_widget_get_clipboard(GTK_WIDGET(imhtml), GDK_SELECTION_CLIPBOARD);
            gtk_clipboard_set_with_data(clipboard_selection,
                                     selection_targets, sizeof(selection_targets) / sizeof(GtkTargetEntry),
                                     (GtkClipboardGetFunc)gtk_imhtml_clipboard_get,
                                     (GtkClipboardClearFunc)gtk_imhtml_clipboard_clear, NULL);

            g_free(html_clipboard);
            g_free(text_clipboard);

            html_clipboard = gtk_imhtml_get_markup_range(imhtml, &start, &end);
            text_clipboard = gtk_imhtml_get_text(imhtml, &start, &end);
      }

      g_signal_stop_emission_by_name(imhtml, "copy-clipboard");
}

static void cut_clipboard_cb(GtkIMHtml *imhtml, gpointer unused)
{
      GtkTextIter start, end;
      if (gtk_text_buffer_get_selection_bounds(imhtml->text_buffer, &start, &end)) {
            if (!clipboard_selection)
                  clipboard_selection = gtk_widget_get_clipboard(GTK_WIDGET(imhtml), GDK_SELECTION_CLIPBOARD);
            gtk_clipboard_set_with_data(clipboard_selection,
                                     selection_targets, sizeof(selection_targets) / sizeof(GtkTargetEntry),
                                     (GtkClipboardGetFunc)gtk_imhtml_clipboard_get,
                                     (GtkClipboardClearFunc)gtk_imhtml_clipboard_clear, NULL);

            g_free(html_clipboard);
            g_free(text_clipboard);

            html_clipboard = gtk_imhtml_get_markup_range(imhtml, &start, &end);
            text_clipboard = gtk_imhtml_get_text(imhtml, &start, &end);

            if (imhtml->editable)
                  gtk_text_buffer_delete_selection(imhtml->text_buffer, FALSE, FALSE);
      }

      g_signal_stop_emission_by_name(imhtml, "cut-clipboard");
}

static void imhtml_paste_insert(GtkIMHtml *imhtml, const char *text, gboolean plaintext)
{
      GtkTextIter iter;
      GtkIMHtmlOptions flags = plaintext ? GTK_IMHTML_NO_SMILEY : (GTK_IMHTML_NO_NEWLINE | GTK_IMHTML_NO_COMMENTS);

      /* Delete any currently selected text */
      gtk_text_buffer_delete_selection(imhtml->text_buffer, TRUE, TRUE);

      gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &iter, gtk_text_buffer_get_insert(imhtml->text_buffer));
      if (!imhtml->wbfo && !plaintext)
            gtk_imhtml_close_tags(imhtml, &iter);

      gtk_imhtml_insert_html_at_iter(imhtml, text, flags, &iter);
      gtk_text_buffer_move_mark_by_name(imhtml->text_buffer, "insert", &iter);
      gtk_text_view_scroll_to_mark(GTK_TEXT_VIEW(imhtml), gtk_text_buffer_get_insert(imhtml->text_buffer),
                                   0, FALSE, 0.0, 0.0);
      if (!imhtml->wbfo && !plaintext)
            gtk_imhtml_close_tags(imhtml, &iter);

}

static void paste_plaintext_received_cb (GtkClipboard *clipboard, const gchar *text, gpointer data)
{
      char *tmp;

      if (text == NULL || !(*text))
            return;

      tmp = g_markup_escape_text(text, -1);
      imhtml_paste_insert(data, tmp, TRUE);
      g_free(tmp);
}

static void paste_received_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, gpointer data)
{
      char *text;
      GtkIMHtml *imhtml = data;

      if (!gtk_text_view_get_editable(GTK_TEXT_VIEW(imhtml)))
            return;

      if (imhtml->wbfo || selection_data->length <= 0) {
            gtk_clipboard_request_text(clipboard, paste_plaintext_received_cb, imhtml);
            return;
      } else {
#if 0
            /* Here's some debug code, for figuring out what sent to us over the clipboard. */
            {
            int i;

            purple_debug_misc("gtkimhtml", "In paste_received_cb():\n\tformat = %d, length = %d\n\t",
                              selection_data->format, selection_data->length);

            for (i = 0; i < (/*(selection_data->format / 8) **/ selection_data->length); i++) {
                  if ((i % 70) == 0)
                        printf("\n\t");
                  if (selection_data->data[i] == '\0')
                        printf(".");
                  else
                        printf("%c", selection_data->data[i]);
            }
            printf("\n");
            }
#endif
            text = g_malloc(selection_data->length);
            memcpy(text, selection_data->data, selection_data->length);
      }

      if (selection_data->length >= 2 &&
            (*(guint16 *)text == 0xfeff || *(guint16 *)text == 0xfffe)) {
            /* This is UTF-16 */
            char *utf8 = utf16_to_utf8_with_bom_check(text, selection_data->length);
            g_free(text);
            text = utf8;
            if (!text) {
                  purple_debug_warning("gtkimhtml", "g_convert from UTF-16 failed in paste_received_cb\n");
                  return;
            }
      }

      if (!(*text) || !g_utf8_validate(text, -1, NULL)) {
            purple_debug_warning("gtkimhtml", "empty string or invalid UTF-8 in paste_received_cb\n");
            g_free(text);
            return;
      }

      imhtml_paste_insert(imhtml, text, FALSE);
      g_free(text);
}


static void smart_backspace_cb(GtkIMHtml *imhtml, gpointer blah)
{
      GtkTextIter iter;
      GtkTextChildAnchor* anchor;
      char * text;
      gint offset;

      if (!imhtml->editable)
            return;

      gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &iter, gtk_text_buffer_get_insert(imhtml->text_buffer));

      /* Get the character before the insertion point */
      offset = gtk_text_iter_get_offset(&iter);
      if (offset <= 0)
            return;

      gtk_text_iter_backward_char(&iter);
      anchor = gtk_text_iter_get_child_anchor(&iter);

      if (!anchor)
            return; /* No smiley here */

      text = g_object_get_data(G_OBJECT(anchor), "gtkimhtml_plaintext");
      if (!text)
            return;

      /* ok, then we need to insert the image buffer text before the anchor */
      gtk_text_buffer_insert(imhtml->text_buffer, &iter, text, -1);
}

static void paste_clipboard_cb(GtkIMHtml *imhtml, gpointer blah)
{
#ifdef _WIN32
      /* If we're on windows, let's see if we can get data from the HTML Format
         clipboard before we try to paste from the GTK buffer */
      if (!clipboard_paste_html_win32(imhtml))
#endif
      {
      GtkClipboard *clipboard = gtk_widget_get_clipboard(GTK_WIDGET(imhtml), GDK_SELECTION_CLIPBOARD);
      gtk_clipboard_request_contents(clipboard, gdk_atom_intern("text/html", FALSE),
                               paste_received_cb, imhtml);
      }
      g_signal_stop_emission_by_name(imhtml, "paste-clipboard");
}

static void imhtml_realized_remove_primary(GtkIMHtml *imhtml, gpointer unused)
{
      gtk_text_buffer_remove_selection_clipboard(GTK_IMHTML(imhtml)->text_buffer,
                                                  gtk_widget_get_clipboard(GTK_WIDGET(imhtml), GDK_SELECTION_PRIMARY));

}

static void imhtml_destroy_add_primary(GtkIMHtml *imhtml, gpointer unused)
{
      gtk_text_buffer_add_selection_clipboard(GTK_IMHTML(imhtml)->text_buffer,
                                              gtk_widget_get_clipboard(GTK_WIDGET(imhtml), GDK_SELECTION_PRIMARY));
}

static void mark_set_so_update_selection_cb(GtkTextBuffer *buffer, GtkTextIter *arg1, GtkTextMark *mark, GtkIMHtml *imhtml)
{
      if (gtk_text_buffer_get_selection_bounds(buffer, NULL, NULL)) {
            gtk_clipboard_set_with_owner(gtk_widget_get_clipboard(GTK_WIDGET(imhtml), GDK_SELECTION_PRIMARY),
                                         selection_targets, sizeof(selection_targets) / sizeof(GtkTargetEntry),
                                         (GtkClipboardGetFunc)gtk_imhtml_clipboard_get,
                                         (GtkClipboardClearFunc)gtk_imhtml_primary_clipboard_clear, G_OBJECT(imhtml));
      }
}

static gboolean gtk_imhtml_button_press_event(GtkIMHtml *imhtml, GdkEventButton *event, gpointer unused)
{
      if (event->button == 2) {
            int x, y;
            GtkTextIter iter;
            GtkClipboard *clipboard = gtk_widget_get_clipboard(GTK_WIDGET(imhtml), GDK_SELECTION_PRIMARY);

            if (!imhtml->editable)
                  return FALSE;

            gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(imhtml),
                                                  GTK_TEXT_WINDOW_TEXT,
                                                  event->x,
                                                  event->y,
                                                  &x,
                                                  &y);
            gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(imhtml), &iter, x, y);
            gtk_text_buffer_place_cursor(imhtml->text_buffer, &iter);

            gtk_clipboard_request_contents(clipboard, gdk_atom_intern("text/html", FALSE),
                               paste_received_cb, imhtml);

            return TRUE;
        }

      return FALSE;
}

static void
gtk_imhtml_undo(GtkIMHtml *imhtml)
{
      g_return_if_fail(GTK_IS_IMHTML(imhtml));
      if (imhtml->editable &&
                  gtk_source_undo_manager_can_undo(imhtml->undo_manager))
            gtk_source_undo_manager_undo(imhtml->undo_manager);
}

static void
gtk_imhtml_redo(GtkIMHtml *imhtml)
{
      g_return_if_fail(GTK_IS_IMHTML(imhtml));
      if (imhtml->editable &&
                  gtk_source_undo_manager_can_redo(imhtml->undo_manager))
            gtk_source_undo_manager_redo(imhtml->undo_manager);

}

static gboolean imhtml_message_send(GtkIMHtml *imhtml)
{
      return FALSE;
}

static void imhtml_toggle_format(GtkIMHtml *imhtml, GtkIMHtmlButtons buttons)
{
      /* since this function is the handler for the formatting keystrokes,
         we need to check here that the formatting attempted is permitted */
      buttons &= imhtml->format_functions;

      switch (buttons) {
      case GTK_IMHTML_BOLD:
            imhtml_toggle_bold(imhtml);
            break;
      case GTK_IMHTML_ITALIC:
            imhtml_toggle_italic(imhtml);
            break;
      case GTK_IMHTML_UNDERLINE:
            imhtml_toggle_underline(imhtml);
            break;
      case GTK_IMHTML_STRIKE:
            imhtml_toggle_strike(imhtml);
            break;
      case GTK_IMHTML_SHRINK:
            imhtml_font_shrink(imhtml);
            break;
      case GTK_IMHTML_GROW:
            imhtml_font_grow(imhtml);
            break;
      default:
            break;
      }
}

static void
gtk_imhtml_finalize (GObject *object)
{
      GtkIMHtml *imhtml = GTK_IMHTML(object);
      GList *scalables;
      GSList *l;

      if (imhtml->scroll_src)
            g_source_remove(imhtml->scroll_src);
      if (imhtml->scroll_time)
            g_timer_destroy(imhtml->scroll_time);

      g_hash_table_destroy(imhtml->smiley_data);
      gtk_smiley_tree_destroy(imhtml->default_smilies);
      gdk_cursor_unref(imhtml->hand_cursor);
      gdk_cursor_unref(imhtml->arrow_cursor);
      gdk_cursor_unref(imhtml->text_cursor);

      if(imhtml->tip_window){
            gtk_widget_destroy(imhtml->tip_window);
      }
      if(imhtml->tip_timer)
            g_source_remove(imhtml->tip_timer);

      for(scalables = imhtml->scalables; scalables; scalables = scalables->next) {
            struct scalable_data *sd = scalables->data;
            GtkIMHtmlScalable *scale = GTK_IMHTML_SCALABLE(sd->scalable);
            scale->free(scale);
            g_free(sd);
      }

      for (l = imhtml->im_images; l; l = l->next) {
            struct im_image_data *img_data = l->data;
            if (imhtml->funcs->image_unref)
                  imhtml->funcs->image_unref(img_data->id);
            g_free(img_data);
      }

      g_list_free(imhtml->scalables);
      g_slist_free(imhtml->im_images);
      g_queue_free(imhtml->animations);
      g_free(imhtml->protocol_name);
      g_free(imhtml->search_string);
      g_object_unref(imhtml->undo_manager);
      G_OBJECT_CLASS(parent_class)->finalize (object);

}

static GtkIMHtmlProtocol *
imhtml_find_protocol(const char *url, gboolean reverse)
{
      GtkIMHtmlClass *klass;
      GList *iter;
      GtkIMHtmlProtocol *proto = NULL;
      int length = reverse ? strlen(url) : -1;

      klass = g_type_class_ref(GTK_TYPE_IMHTML);
      for (iter = klass->protocols; iter; iter = iter->next) {
            proto = iter->data;
            if (g_ascii_strncasecmp(url, proto->name, reverse ? MIN(length, proto->length) : proto->length) == 0) {
                  return proto;
            }
      }
      return NULL;
}

static void
imhtml_url_clicked(GtkIMHtml *imhtml, const char *url)
{
      GtkIMHtmlProtocol *proto = imhtml_find_protocol(url, FALSE);
      GtkIMHtmlLink *link;
      if (!proto)
            return;
      link = g_new0(GtkIMHtmlLink, 1);
      link->imhtml = g_object_ref(imhtml);
      link->url = g_strdup(url);
      proto->activate(imhtml, link);   /* XXX: Do something with the return value? */
      gtk_imhtml_link_destroy(link);
}

/* Boring GTK+ stuff */
static void gtk_imhtml_class_init (GtkIMHtmlClass *klass)
{
      GtkWidgetClass *widget_class = (GtkWidgetClass *) klass;
      GtkObjectClass *object_class;
      GtkBindingSet *binding_set;
      GObjectClass   *gobject_class;
      object_class = (GtkObjectClass*) klass;
      gobject_class = (GObjectClass*) klass;
      parent_class = g_type_class_ref(GTK_TYPE_TEXT_VIEW);
      signals[URL_CLICKED] = g_signal_new("url_clicked",
                                    G_TYPE_FROM_CLASS(gobject_class),
                                    G_SIGNAL_RUN_FIRST,
                                    G_STRUCT_OFFSET(GtkIMHtmlClass, url_clicked),
                                    NULL,
                                    0,
                                    g_cclosure_marshal_VOID__POINTER,
                                    G_TYPE_NONE, 1,
                                    G_TYPE_POINTER);
      signals[BUTTONS_UPDATE] = g_signal_new("format_buttons_update",
                                     G_TYPE_FROM_CLASS(gobject_class),
                                     G_SIGNAL_RUN_FIRST,
                                     G_STRUCT_OFFSET(GtkIMHtmlClass, buttons_update),
                                     NULL,
                                     0,
                                     g_cclosure_marshal_VOID__INT,
                                     G_TYPE_NONE, 1,
                                     G_TYPE_INT);
      signals[TOGGLE_FORMAT] = g_signal_new("format_function_toggle",
                                    G_TYPE_FROM_CLASS(gobject_class),
                                    G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                                    G_STRUCT_OFFSET(GtkIMHtmlClass, toggle_format),
                                    NULL,
                                    0,
                                    g_cclosure_marshal_VOID__INT,
                                    G_TYPE_NONE, 1,
                                    G_TYPE_INT);
      signals[CLEAR_FORMAT] = g_signal_new("format_function_clear",
                                    G_TYPE_FROM_CLASS(gobject_class),
                                    G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
                                    G_STRUCT_OFFSET(GtkIMHtmlClass, clear_format),
                                    NULL,
                                    0,
                                   g_cclosure_marshal_VOID__VOID,
                                   G_TYPE_NONE, 0);
      signals[UPDATE_FORMAT] = g_signal_new("format_function_update",
                                    G_TYPE_FROM_CLASS(gobject_class),
                                    G_SIGNAL_RUN_FIRST,
                                    G_STRUCT_OFFSET(GtkIMHtmlClass, update_format),
                                    NULL,
                                    0,
                                    g_cclosure_marshal_VOID__VOID,
                                    G_TYPE_NONE, 0);
      signals[MESSAGE_SEND] = g_signal_new("message_send",
                                   G_TYPE_FROM_CLASS(gobject_class),
                                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                                   G_STRUCT_OFFSET(GtkIMHtmlClass, message_send),
                                   NULL,
                                   0, g_cclosure_marshal_VOID__VOID,
                                   G_TYPE_NONE, 0);
        signals [UNDO] = g_signal_new ("undo",
                                          G_TYPE_FROM_CLASS (klass),
                                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                                      G_STRUCT_OFFSET (GtkIMHtmlClass, undo),
                                          NULL,
                                          NULL,
                                      gtksourceview_marshal_VOID__VOID,
                                          G_TYPE_NONE,
                                          0);
        signals [REDO] = g_signal_new ("redo",
                                          G_TYPE_FROM_CLASS (klass),
                                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                                          G_STRUCT_OFFSET (GtkIMHtmlClass, redo),
                                          NULL,
                                          NULL,
                                          gtksourceview_marshal_VOID__VOID,
                                          G_TYPE_NONE,
                                          0);



      klass->toggle_format = imhtml_toggle_format;
      klass->message_send = imhtml_message_send;
      klass->clear_format = imhtml_clear_formatting;
      klass->url_clicked = imhtml_url_clicked;
      klass->undo = gtk_imhtml_undo;
      klass->redo = gtk_imhtml_redo;

      gobject_class->finalize = gtk_imhtml_finalize;
      widget_class->drag_motion = gtk_text_view_drag_motion;
      widget_class->expose_event = gtk_imhtml_expose_event;
      parent_size_allocate = widget_class->size_allocate;
      widget_class->size_allocate = gtk_imhtml_size_allocate;
      parent_style_set = widget_class->style_set;
      widget_class->style_set = gtk_imhtml_style_set;

      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("hyperlink-color",
                                              _("Hyperlink color"),
                                              _("Color to draw hyperlinks."),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("hyperlink-visited-color",
                                              _("Hyperlink visited color"),
                                              _("Color to draw hyperlink after it has been visited (or activated)."),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("hyperlink-prelight-color",
                                              _("Hyperlink prelight color"),
                                              _("Color to draw hyperlinks when mouse is over them."),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("send-name-color",
                                              _("Sent Message Name Color"),
                                              _("Color to draw the name of a message you sent."),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("receive-name-color",
                                              _("Received Message Name Color"),
                                              _("Color to draw the name of a message you received."),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("highlight-name-color",
                                              _("\"Attention\" Name Color"),
                                              _("Color to draw the name of a message you received containing your name."),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("action-name-color",
                                              _("Action Message Name Color"),
                                              _("Color to draw the name of an action message."),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("whisper-action-name-color",
                                              _("Action Message Name Color for Whispered Message"),
                                              _("Color to draw the name of a whispered action message."),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("whisper-name-color",
                                              _("Whisper Message Name Color"),
                                              _("Color to draw the name of a whispered message."),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));

      /* Customizable typing notification ... sort of. Example:
       *   GtkIMHtml::typing-notification-font = "monospace italic light 8.0"
       *   GtkIMHtml::typing-notification-color = "#ff0000"
       *   GtkIMHtml::typing-notification-enable = 1
       */
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boxed("typing-notification-color",
                                              _("Typing notification color"),
                                              _("The color to use for the typing notification"),
                                              GDK_TYPE_COLOR, G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_string("typing-notification-font",
                                              _("Typing notification font"),
                                              _("The font to use for the typing notification"),
                                              "light 8.0", G_PARAM_READABLE));
      gtk_widget_class_install_style_property(widget_class, g_param_spec_boolean("typing-notification-enable",
                                              _("Enable typing notification"),
                                              _("Enable typing notification"),
                                              TRUE, G_PARAM_READABLE));

      binding_set = gtk_binding_set_by_class (parent_class);
      gtk_binding_entry_add_signal (binding_set, GDK_b, GDK_CONTROL_MASK, "format_function_toggle", 1, G_TYPE_INT, GTK_IMHTML_BOLD);
      gtk_binding_entry_add_signal (binding_set, GDK_i, GDK_CONTROL_MASK, "format_function_toggle", 1, G_TYPE_INT, GTK_IMHTML_ITALIC);
      gtk_binding_entry_add_signal (binding_set, GDK_u, GDK_CONTROL_MASK, "format_function_toggle", 1, G_TYPE_INT, GTK_IMHTML_UNDERLINE);
      gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_CONTROL_MASK, "format_function_toggle", 1, G_TYPE_INT, GTK_IMHTML_GROW);
      gtk_binding_entry_add_signal (binding_set, GDK_equal, GDK_CONTROL_MASK, "format_function_toggle", 1, G_TYPE_INT, GTK_IMHTML_GROW);
      gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_CONTROL_MASK, "format_function_toggle", 1, G_TYPE_INT, GTK_IMHTML_SHRINK);
      binding_set = gtk_binding_set_by_class(klass);
      gtk_binding_entry_add_signal (binding_set, GDK_r, GDK_CONTROL_MASK, "format_function_clear", 0);
      gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "message_send", 0);
      gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "message_send", 0);
        gtk_binding_entry_add_signal (binding_set, GDK_z, GDK_CONTROL_MASK, "undo", 0);
        gtk_binding_entry_add_signal (binding_set, GDK_z, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "redo", 0);
        gtk_binding_entry_add_signal (binding_set, GDK_F14, 0, "undo", 0);

}

static void gtk_imhtml_init (GtkIMHtml *imhtml)
{
      imhtml->text_buffer = gtk_text_buffer_new(NULL);
      imhtml->undo_manager = gtk_source_undo_manager_new(imhtml->text_buffer);
      gtk_text_view_set_buffer(GTK_TEXT_VIEW(imhtml), imhtml->text_buffer);
      gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(imhtml), GTK_WRAP_WORD_CHAR);
      gtk_text_view_set_pixels_above_lines(GTK_TEXT_VIEW(imhtml), 2);
      gtk_text_view_set_pixels_below_lines(GTK_TEXT_VIEW(imhtml), 3);
      gtk_text_view_set_left_margin(GTK_TEXT_VIEW(imhtml), 2);
      gtk_text_view_set_right_margin(GTK_TEXT_VIEW(imhtml), 2);
      /*gtk_text_view_set_indent(GTK_TEXT_VIEW(imhtml), -15);*/
      /*gtk_text_view_set_justification(GTK_TEXT_VIEW(imhtml), GTK_JUSTIFY_FILL);*/

      /* These tags will be used often and can be reused--we create them on init and then apply them by name
       * other tags (color, size, face, etc.) will have to be created and applied dynamically
       * Note that even though we created SUB, SUP, and PRE tags here, we don't really
       * apply them anywhere yet. */
      gtk_text_buffer_create_tag(imhtml->text_buffer, "BOLD", "weight", PANGO_WEIGHT_BOLD, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "ITALICS", "style", PANGO_STYLE_ITALIC, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "UNDERLINE", "underline", PANGO_UNDERLINE_SINGLE, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "STRIKE", "strikethrough", TRUE, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "SUB", "rise", -5000, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "SUP", "rise", 5000, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "PRE", "family", "Monospace", NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "search", "background", "#22ff00", "weight", "bold", NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "comment", "weight", PANGO_WEIGHT_NORMAL,
#if FALSE && GTK_CHECK_VERSION(2,10,10)
                  "invisible", FALSE,
#endif
                  NULL);

      gtk_text_buffer_create_tag(imhtml->text_buffer, "send-name", "weight", PANGO_WEIGHT_BOLD, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "receive-name", "weight", PANGO_WEIGHT_BOLD, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "highlight-name", "weight", PANGO_WEIGHT_BOLD, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "action-name", "weight", PANGO_WEIGHT_BOLD, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "whisper-action-name", "weight", PANGO_WEIGHT_BOLD, NULL);
      gtk_text_buffer_create_tag(imhtml->text_buffer, "whisper-name", "weight", PANGO_WEIGHT_BOLD, NULL);

      /* When hovering over a link, we show the hand cursor--elsewhere we show the plain ol' pointer cursor */
      imhtml->hand_cursor = gdk_cursor_new (GDK_HAND2);
      imhtml->arrow_cursor = gdk_cursor_new (GDK_LEFT_PTR);
      imhtml->text_cursor = gdk_cursor_new (GDK_XTERM);

      imhtml->show_comments = TRUE;

      imhtml->smiley_data = g_hash_table_new_full(g_str_hash, g_str_equal,
                  g_free, (GDestroyNotify)gtk_smiley_tree_destroy);
      imhtml->default_smilies = gtk_smiley_tree_new();

      g_signal_connect(G_OBJECT(imhtml), "motion-notify-event", G_CALLBACK(gtk_motion_event_notify), NULL);
      g_signal_connect(G_OBJECT(imhtml), "leave-notify-event", G_CALLBACK(gtk_leave_event_notify), NULL);
      g_signal_connect(G_OBJECT(imhtml), "enter-notify-event", G_CALLBACK(gtk_enter_event_notify), NULL);
#if (!GTK_CHECK_VERSION(2,2,0))
      /* See the comment for gtk_key_pressed_cb */
      g_signal_connect(G_OBJECT(imhtml), "key_press_event", G_CALLBACK(gtk_key_pressed_cb), NULL);
#endif
      g_signal_connect(G_OBJECT(imhtml), "button_press_event", G_CALLBACK(gtk_imhtml_button_press_event), NULL);
      g_signal_connect(G_OBJECT(imhtml->text_buffer), "insert-text", G_CALLBACK(preinsert_cb), imhtml);
      g_signal_connect(G_OBJECT(imhtml->text_buffer), "delete_range", G_CALLBACK(delete_cb), imhtml);
      g_signal_connect_after(G_OBJECT(imhtml->text_buffer), "insert-text", G_CALLBACK(insert_cb), imhtml);
      g_signal_connect_after(G_OBJECT(imhtml->text_buffer), "insert-child-anchor", G_CALLBACK(insert_ca_cb), imhtml);
      gtk_drag_dest_set(GTK_WIDGET(imhtml), 0,
                    link_drag_drop_targets, sizeof(link_drag_drop_targets) / sizeof(GtkTargetEntry),
                    GDK_ACTION_COPY);
      g_signal_connect(G_OBJECT(imhtml), "drag_data_received", G_CALLBACK(gtk_imhtml_link_drag_rcv_cb), imhtml);
      g_signal_connect(G_OBJECT(imhtml), "drag_drop", G_CALLBACK(gtk_imhtml_link_drop_cb), imhtml);

      g_signal_connect(G_OBJECT(imhtml), "copy-clipboard", G_CALLBACK(copy_clipboard_cb), NULL);
      g_signal_connect(G_OBJECT(imhtml), "cut-clipboard", G_CALLBACK(cut_clipboard_cb), NULL);
      g_signal_connect(G_OBJECT(imhtml), "paste-clipboard", G_CALLBACK(paste_clipboard_cb), NULL);
      g_signal_connect_after(G_OBJECT(imhtml), "realize", G_CALLBACK(imhtml_realized_remove_primary), NULL);
      g_signal_connect(G_OBJECT(imhtml), "unrealize", G_CALLBACK(imhtml_destroy_add_primary), NULL);

      g_signal_connect_after(G_OBJECT(GTK_IMHTML(imhtml)->text_buffer), "mark-set",
                           G_CALLBACK(mark_set_so_update_selection_cb), imhtml);

      gtk_widget_add_events(GTK_WIDGET(imhtml),
                  GDK_LEAVE_NOTIFY_MASK | GDK_ENTER_NOTIFY_MASK);

      imhtml->tip = NULL;
      imhtml->tip_timer = 0;
      imhtml->tip_window = NULL;

      imhtml->edit.bold = FALSE;
      imhtml->edit.italic = FALSE;
      imhtml->edit.underline = FALSE;
      imhtml->edit.forecolor = NULL;
      imhtml->edit.backcolor = NULL;
      imhtml->edit.fontface = NULL;
      imhtml->edit.fontsize = 0;
      imhtml->edit.link = NULL;


      imhtml->scalables = NULL;
      imhtml->animations = g_queue_new();
      gtk_imhtml_set_editable(imhtml, FALSE);
      g_signal_connect(G_OBJECT(imhtml), "populate-popup",
                               G_CALLBACK(hijack_menu_cb), NULL);
}

01751 GtkWidget *gtk_imhtml_new(void *a, void *b)
{
      return GTK_WIDGET(g_object_new(gtk_imhtml_get_type(), NULL));
}

01756 GType gtk_imhtml_get_type()
{
      static GType imhtml_type = 0;

      if (!imhtml_type) {
            static const GTypeInfo imhtml_info = {
                  sizeof(GtkIMHtmlClass),
                  NULL,
                  NULL,
                  (GClassInitFunc) gtk_imhtml_class_init,
                  NULL,
                  NULL,
                  sizeof (GtkIMHtml),
                  0,
                  (GInstanceInitFunc) gtk_imhtml_init,
                  NULL
            };

            imhtml_type = g_type_register_static(gtk_text_view_get_type(),
                        "GtkIMHtml", &imhtml_info, 0);
      }

      return imhtml_type;
}

static void gtk_imhtml_link_destroy(GtkIMHtmlLink *link)
{
      if (link->imhtml)
            g_object_unref(link->imhtml);
      if (link->tag)
            g_object_unref(link->tag);
      g_free(link->url);
      g_free(link);
}

/* The callback for an event on a link tag. */
static gboolean tag_event(GtkTextTag *tag, GObject *imhtml, GdkEvent *event, GtkTextIter *arg2, gpointer unused)
{
      GdkEventButton *event_button = (GdkEventButton *) event;
      if (GTK_IMHTML(imhtml)->editable)
            return FALSE;
      if (event->type == GDK_BUTTON_RELEASE) {
            if ((event_button->button == 1) || (event_button->button == 2)) {
                  GtkTextIter start, end;
                  /* we shouldn't open a URL if the user has selected something: */
                  if (gtk_text_buffer_get_selection_bounds(
                                    gtk_text_iter_get_buffer(arg2),     &start, &end))
                        return FALSE;
                  gtk_imhtml_activate_tag(GTK_IMHTML(imhtml), tag);
                  return FALSE;
            } else if(event_button->button == 3) {
                  GList *children;
                  GtkWidget *menu;
                  GtkIMHtmlProtocol *proto;
                  GtkIMHtmlLink *link = g_new(GtkIMHtmlLink, 1);
                  link->imhtml = g_object_ref(imhtml);
                  link->url = g_strdup(g_object_get_data(G_OBJECT(tag), "link_url"));
                  link->tag = g_object_ref(tag);

                  /* Don't want the tooltip around if user right-clicked on link */
                  if (GTK_IMHTML(imhtml)->tip_window) {
                        gtk_widget_destroy(GTK_IMHTML(imhtml)->tip_window);
                        GTK_IMHTML(imhtml)->tip_window = NULL;
                  }
                  if (GTK_IMHTML(imhtml)->tip_timer) {
                        g_source_remove(GTK_IMHTML(imhtml)->tip_timer);
                        GTK_IMHTML(imhtml)->tip_timer = 0;
                  }
                  if (GTK_IMHTML(imhtml)->editable)
                        gdk_window_set_cursor(event_button->window, GTK_IMHTML(imhtml)->text_cursor);
                  else
                        gdk_window_set_cursor(event_button->window, GTK_IMHTML(imhtml)->arrow_cursor);
                  menu = gtk_menu_new();
                  g_object_set_data_full(G_OBJECT(menu), "x-imhtml-url-data", link,
                              (GDestroyNotify)gtk_imhtml_link_destroy);

                  proto = imhtml_find_protocol(link->url, FALSE);

                  if (proto && proto->context_menu) {
                        proto->context_menu(GTK_IMHTML(link->imhtml), link, menu);
                  }

                  children = gtk_container_get_children(GTK_CONTAINER(menu));
                  if (!children) {
                        GtkWidget *item = gtk_menu_item_new_with_label(_("No actions available"));
                        gtk_widget_show(item);
                        gtk_widget_set_sensitive(item, FALSE);
                        gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
                  } else {
                        g_list_free(children);
                  }


                  gtk_widget_show_all(menu);
                  gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL,
                                          event_button->button, event_button->time);

                  return TRUE;
            }
      }
      if(event->type == GDK_BUTTON_PRESS && event_button->button == 3)
            return TRUE; /* Clicking the right mouse button on a link shouldn't
                                    be caught by the regular GtkTextView menu */
      else
            return FALSE; /* Let clicks go through if we didn't catch anything */
}

static gboolean
gtk_text_view_drag_motion (GtkWidget        *widget,
                           GdkDragContext   *context,
                           gint              x,
                           gint              y,
                           guint             time)
{
      GdkDragAction suggested_action = 0;

      if (gtk_drag_dest_find_target (widget, context, NULL) == GDK_NONE) {
            /* can't accept any of the offered targets */
      } else {
            GtkWidget *source_widget;
            suggested_action = context->suggested_action;
            source_widget = gtk_drag_get_source_widget (context);
            if (source_widget == widget) {
                  /* Default to MOVE, unless the user has
                   * pressed ctrl or alt to affect available actions
                   */
                  if ((context->actions & GDK_ACTION_MOVE) != 0)
                        suggested_action = GDK_ACTION_MOVE;
            }
      }

      gdk_drag_status (context, suggested_action, time);

  /* TRUE return means don't propagate the drag motion to parent
   * widgets that may also be drop sites.
   */
  return TRUE;
}

static void
gtk_imhtml_link_drop_cb(GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time, gpointer user_data)
{
      GdkAtom target = gtk_drag_dest_find_target (widget, context, NULL);

      if (target != GDK_NONE)
            gtk_drag_get_data (widget, context, target, time);
      else
            gtk_drag_finish (context, FALSE, FALSE, time);

      return;
}

static void
gtk_imhtml_link_drag_rcv_cb(GtkWidget *widget, GdkDragContext *dc, guint x, guint y,
                      GtkSelectionData *sd, guint info, guint t, GtkIMHtml *imhtml)
{
      gchar **links;
      gchar *link;
      char *text = (char *)sd->data;
      GtkTextMark *mark = gtk_text_buffer_get_insert(imhtml->text_buffer);
      GtkTextIter iter;
      gint i = 0;

      gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &iter, mark);

      if(gtk_imhtml_get_editable(imhtml) && sd->data){
            switch (info) {
            case GTK_IMHTML_DRAG_URL:
                  /* TODO: Is it really ok to change sd->data...? */
                  purple_str_strip_char((char *)sd->data, '\r');

                  links = g_strsplit((char *)sd->data, "\n", 0);
                  while((link = links[i]) != NULL){
                        if (gtk_imhtml_is_protocol(link)) {
                              gchar *label;

                              if(links[i + 1])
                                    i++;

                              label = links[i];

                              gtk_imhtml_insert_link(imhtml, mark, link, label);
                        } else if (*link == '\0') {
                              /* Ignore blank lines */
                        } else {
                              /* Special reasons, aka images being put in via other tag, etc. */
                              /* ... don't pretend we handled it if we didn't */
                              gtk_drag_finish(dc, FALSE, FALSE, t);
                              g_strfreev(links);
                              return;
                        }

                        i++;
                  }
            g_strfreev(links);
                  break;
            case GTK_IMHTML_DRAG_HTML:
                  {
                  char *utf8 = NULL;
                  /* Ewww. This is all because mozilla thinks that text/html is 'for internal use only.'
                   * as explained by this comment in gtkhtml:
                   *
                   * FIXME This hack decides the charset of the selection.  It seems that
                   * mozilla/netscape alway use ucs2 for text/html
                   * and openoffice.org seems to always use utf8 so we try to validate
                   * the string as utf8 and if that fails we assume it is ucs2
                   *
                   * See also the comment on text/html here:
                   * http://mail.gnome.org/archives/gtk-devel-list/2001-September/msg00114.html
                   */
                  if (sd->length >= 2 && !g_utf8_validate(text, sd->length - 1, NULL)) {
                        utf8 = utf16_to_utf8_with_bom_check(text, sd->length);

                        if (!utf8) {
                              purple_debug_warning("gtkimhtml", "g_convert from UTF-16 failed in drag_rcv_cb\n");
                              return;
                        }
                  } else if (!(*text) || !g_utf8_validate(text, -1, NULL)) {
                        purple_debug_warning("gtkimhtml", "empty string or invalid UTF-8 in drag_rcv_cb\n");
                        return;
                  }

                  gtk_imhtml_insert_html_at_iter(imhtml, utf8 ? utf8 : text, 0, &iter);
                  g_free(utf8);
                  break;
                  }
            case GTK_IMHTML_DRAG_TEXT:
                  if (!(*text) || !g_utf8_validate(text, -1, NULL)) {
                        purple_debug_warning("gtkimhtml", "empty string or invalid UTF-8 in drag_rcv_cb\n");
                        return;
                  } else {
                        char *tmp = g_markup_escape_text(text, -1);
                        gtk_imhtml_insert_html_at_iter(imhtml, tmp, 0, &iter);
                        g_free(tmp);
                  }
                  break;
            default:
                  gtk_drag_finish(dc, FALSE, FALSE, t);
                  return;
            }
            gtk_drag_finish(dc, TRUE, (dc->action == GDK_ACTION_MOVE), t);
      } else {
            gtk_drag_finish(dc, FALSE, FALSE, t);
      }
}

static void gtk_smiley_tree_remove (GtkSmileyTree     *tree,
                  GtkIMHtmlSmiley   *smiley)
{
      GtkSmileyTree *t = tree;
      const gchar *x = smiley->smile;
      gint len = 0;

      while (*x) {
            gchar *pos;

            if (!t->values)
                  return;

            pos = strchr (t->values->str, *x);
            if (pos)
                  t = t->children [pos - t->values->str];
            else
                  return;

            x++; len++;
      }

      if (t->image) {
            t->image = NULL;
      }
}

static gint
gtk_smiley_tree_lookup (GtkSmileyTree *tree,
                  const gchar   *text)
{
      GtkSmileyTree *t = tree;
      const gchar *x = text;
      gint len = 0;
      const gchar *amp;
      gint alen;

      while (*x) {
            gchar *pos;

            if (!t->values)
                  break;

            if(*x == '&' && (amp = purple_markup_unescape_entity(x, &alen))) {
                  gboolean matched = TRUE;
                  /* Make sure all chars of the unescaped value match */
                  while (*(amp + 1)) {
                        pos = strchr (t->values->str, *amp);
                        if (pos)
                              t = t->children [GPOINTER_TO_INT(pos) - GPOINTER_TO_INT(t->values->str)];
                        else {
                              matched = FALSE;
                              break;
                        }
                        amp++;
                  }
                  if (!matched)
                        break;

                  pos = strchr (t->values->str, *amp);
            }
            else if (*x == '<') /* Because we're all WYSIWYG now, a '<'
                             * char should only appear as the start of a tag.  Perhaps a safer (but costlier)
                             * check would be to call gtk_imhtml_is_tag on it */
                  break;
            else {
                  alen = 1;
                  pos = strchr (t->values->str, *x);
            }

            if (pos)
                  t = t->children [GPOINTER_TO_INT(pos) - GPOINTER_TO_INT(t->values->str)];
            else
                  break;

            x += alen;
            len += alen;
      }

      if (t->image)
            return len;

      return 0;
}

static void
gtk_imhtml_disassociate_smiley_foreach(gpointer key, gpointer value,
      gpointer user_data)
{
      GtkSmileyTree *tree = (GtkSmileyTree *) value;
      GtkIMHtmlSmiley *smiley = (GtkIMHtmlSmiley *) user_data;
      gtk_smiley_tree_remove(tree, smiley);
}

static void
gtk_imhtml_disconnect_smiley(GtkIMHtml *imhtml, GtkIMHtmlSmiley *smiley)
{
      smiley->imhtml = NULL;
      g_signal_handlers_disconnect_matched(imhtml, G_SIGNAL_MATCH_DATA, 0, 0,
            NULL, NULL, smiley);
}

static void
gtk_imhtml_disassociate_smiley(GtkIMHtmlSmiley *smiley)
{
      if (smiley->imhtml) {
            gtk_smiley_tree_remove(smiley->imhtml->default_smilies, smiley);
            g_hash_table_foreach(smiley->imhtml->smiley_data,
                  gtk_imhtml_disassociate_smiley_foreach, smiley);
            g_signal_handlers_disconnect_matched(smiley->imhtml, G_SIGNAL_MATCH_DATA,
                  0, 0, NULL, NULL, smiley);
            smiley->imhtml = NULL;
      }
}

void
02118 gtk_imhtml_associate_smiley (GtkIMHtml       *imhtml,
                       const gchar     *sml,
                       GtkIMHtmlSmiley *smiley)
{
      GtkSmileyTree *tree;
      g_return_if_fail (imhtml != NULL);
      g_return_if_fail (GTK_IS_IMHTML (imhtml));

      if (sml == NULL)
            tree = imhtml->default_smilies;
      else if (!(tree = g_hash_table_lookup(imhtml->smiley_data, sml))) {
            tree = gtk_smiley_tree_new();
            g_hash_table_insert(imhtml->smiley_data, g_strdup(sml), tree);
      }

      /* need to disconnect old imhtml, if there is one */
      if (smiley->imhtml) {
            g_signal_handlers_disconnect_matched(smiley->imhtml, G_SIGNAL_MATCH_DATA,
                  0, 0, NULL, NULL, smiley);
      }

      smiley->imhtml = imhtml;

      gtk_smiley_tree_insert (tree, smiley);

      /* connect destroy signal for the imhtml */
      g_signal_connect(imhtml, "destroy", G_CALLBACK(gtk_imhtml_disconnect_smiley),
            smiley);
}

static gboolean
gtk_imhtml_is_smiley (GtkIMHtml   *imhtml,
                  GSList      *fonts,
                  const gchar *text,
                  gint        *len)
{
      GtkSmileyTree *tree;
      GtkIMHtmlFontDetail *font;
      char *sml = NULL;

      if (fonts) {
            font = fonts->data;
            sml = font->sml;
      }

      if (!sml)
            sml = imhtml->protocol_name;

      if (!sml || !(tree = g_hash_table_lookup(imhtml->smiley_data, sml)))
            tree = imhtml->default_smilies;

      if (tree == NULL)
            return FALSE;

      *len = gtk_smiley_tree_lookup (tree, text);
      return (*len > 0);
}

GtkIMHtmlSmiley *
02177 gtk_imhtml_smiley_get(GtkIMHtml *imhtml,
      const gchar *sml,
      const gchar *text)
{
      GtkSmileyTree *t;
      const gchar *x = text;
      if (sml == NULL)
            t = imhtml->default_smilies;
      else
            t = g_hash_table_lookup(imhtml->smiley_data, sml);


      if (t == NULL)
            return sml ? gtk_imhtml_smiley_get(imhtml, NULL, text) : NULL;

      while (*x) {
            gchar *pos;

            if (!t->values) {
                  return sml ? gtk_imhtml_smiley_get(imhtml, NULL, text) : NULL;
            }

            pos = strchr (t->values->str, *x);
            if (pos) {
                  t = t->children [GPOINTER_TO_INT(pos) - GPOINTER_TO_INT(t->values->str)];
            } else {
                  return sml ? gtk_imhtml_smiley_get(imhtml, NULL, text) : NULL;
            }
            x++;
      }

      return t->image;
}

static GdkPixbufAnimation *
gtk_smiley_get_image(GtkIMHtmlSmiley *smiley)
{
      if (!smiley->icon && smiley->file) {
            smiley->icon = gdk_pixbuf_animation_new_from_file(smiley->file, NULL);
      } else if (!smiley->icon && smiley->loader) {
            smiley->icon = gdk_pixbuf_loader_get_animation(smiley->loader);
            if (smiley->icon)
                  g_object_ref(G_OBJECT(smiley->icon));
      }

      return smiley->icon;
}

#define VALID_TAG(x)    do { \
                  if (!g_ascii_strncasecmp (string, x ">", strlen (x ">"))) { \
                        if (tag) *tag = g_strndup (string, strlen (x));       \
                        if (len) *len = strlen (x) + 1;                       \
                        return TRUE;                              \
                  }                                         \
                  if (type) (*type)++; \
            } while (0)

#define VALID_OPT_TAG(x)      do { \
                        if (!g_ascii_strncasecmp (string, x " ", strlen (x " "))) { \
                              const gchar *c = string + strlen (x " "); \
                              gchar e = '"';                            \
                              gboolean quote = FALSE;                   \
                              while (*c) {                              \
                                    if (*c == '"' || *c == '\'') {            \
                                          if (quote && (*c == e))       \
                                                quote = !quote;         \
                                          else if (!quote) {            \
                                                quote = !quote;         \
                                                e = *c;                 \
                                          }                       \
                                    } else if (!quote && (*c == '>'))   \
                                          break;                        \
                                    c++;                          \
                              }                                   \
                              if (*c) {                           \
                                    if (tag) *tag = g_strndup (string, c - string); \
                                    if (len) *len = c - string + 1;                 \
                                    return TRUE;                        \
                              }                                   \
                        }                                         \
                        if (type) (*type)++; \
                  } while (0)


static gboolean
gtk_imhtml_is_tag (const gchar *string,
               gchar      **tag,
               gint        *len,
               gint        *type)
{
      char *close;
      if (type)
            *type = 1;

      if (!(close = strchr (string, '>')))
            return FALSE;

      VALID_TAG ("B");
      VALID_TAG ("BOLD");
      VALID_TAG ("/B");
      VALID_TAG ("/BOLD");
      VALID_TAG ("I");
      VALID_TAG ("ITALIC");
      VALID_TAG ("/I");
      VALID_TAG ("/ITALIC");
      VALID_TAG ("U");
      VALID_TAG ("UNDERLINE");
      VALID_TAG ("/U");
      VALID_TAG ("/UNDERLINE");
      VALID_TAG ("S");
      VALID_TAG ("STRIKE");
      VALID_TAG ("/S");
      VALID_TAG ("/STRIKE");
      VALID_TAG ("SUB");
      VALID_TAG ("/SUB");
      VALID_TAG ("SUP");
      VALID_TAG ("/SUP");
      VALID_TAG ("PRE");
      VALID_TAG ("/PRE");
      VALID_TAG ("TITLE");
      VALID_TAG ("/TITLE");
      VALID_TAG ("BR");
      VALID_TAG ("HR");
      VALID_TAG ("/FONT");
      VALID_TAG ("/A");
      VALID_TAG ("P");
      VALID_TAG ("/P");
      VALID_TAG ("H3");
      VALID_TAG ("/H3");
      VALID_TAG ("HTML");
      VALID_TAG ("/HTML");
      VALID_TAG ("BODY");
      VALID_TAG ("/BODY");
      VALID_TAG ("FONT");
      VALID_TAG ("HEAD");
      VALID_TAG ("/HEAD");
      VALID_TAG ("BINARY");
      VALID_TAG ("/BINARY");

      VALID_OPT_TAG ("HR");
      VALID_OPT_TAG ("FONT");
      VALID_OPT_TAG ("BODY");
      VALID_OPT_TAG ("A");
      VALID_OPT_TAG ("IMG");
      VALID_OPT_TAG ("P");
      VALID_OPT_TAG ("H3");
      VALID_OPT_TAG ("HTML");

      VALID_TAG ("CITE");
      VALID_TAG ("/CITE");
      VALID_TAG ("EM");
      VALID_TAG ("/EM");
      VALID_TAG ("STRONG");
      VALID_TAG ("/STRONG");

      VALID_OPT_TAG ("SPAN");
      VALID_TAG ("/SPAN");
      VALID_TAG ("BR/"); /* hack until gtkimhtml handles things better */
      VALID_TAG ("IMG");
      VALID_TAG("SPAN");
      VALID_OPT_TAG("BR");

      if (!g_ascii_strncasecmp(string, "!--", strlen ("!--"))) {
            gchar *e = strstr (string + strlen("!--"), "-->");
            if (e) {
                  if (len)
                        *len = e - string + strlen ("-->");
                  if (tag)
                        *tag = g_strndup (string + strlen ("!--"), *len - strlen ("!---->"));
                  return TRUE;
            }
      }

      if (type)
            *type = -1;
      if (len)
            *len = close - string + 1;
      if (tag)
            *tag = g_strndup(string, *len - 1);
      return TRUE;
}

static gchar*
gtk_imhtml_get_html_opt (gchar       *tag,
                   const gchar *opt)
{
      gchar *t = tag;
      gchar *e, *a;
      gchar *val;
      gint len;
      const gchar *c;
      GString *ret;

      while (g_ascii_strncasecmp (t, opt, strlen (opt))) {
            gboolean quote = FALSE;
            if (*t == '\0') break;
            while (*t && !((*t == ' ') && !quote)) {
                  if (*t == '\"')
                        quote = ! quote;
                  t++;
            }
            while (*t && (*t == ' ')) t++;
      }

      if (!g_ascii_strncasecmp (t, opt, strlen (opt))) {
            t += strlen (opt);
      } else {
            return NULL;
      }

      if ((*t == '\"') || (*t == '\'')) {
            e = a = ++t;
            while (*e && (*e != *(t - 1))) e++;
            if  (*e == '\0') {
                  return NULL;
            } else
                  val = g_strndup(a, e - a);
      } else {
            e = a = t;
            while (*e && !isspace ((gint) *e)) e++;
            val = g_strndup(a, e - a);
      }

      ret = g_string_new("");
      e = val;
      while(*e) {
            if((c = purple_markup_unescape_entity(e, &len))) {
                  ret = g_string_append(ret, c);
                  e += len;
            } else {
                  gunichar uni = g_utf8_get_char(e);
                  ret = g_string_append_unichar(ret, uni);
                  e = g_utf8_next_char(e);
            }
      }

      g_free(val);

      return g_string_free(ret, FALSE);
}

/* returns if the beginning of the text is a protocol. If it is the protocol, returns the length so
   the caller knows how long the protocol string is. */
static int gtk_imhtml_is_protocol(const char *text)
{
      GtkIMHtmlProtocol *proto = imhtml_find_protocol(text, FALSE);
      return proto ? proto->length : 0;
}

static gboolean smooth_scroll_cb(gpointer data);

/*
 <KingAnt> marv: The two IM image functions in oscar are purple_odc_send_im and purple_odc_incoming


[19:58] <Robot101> marv: images go into the imgstore, a refcounted... well.. hash. :)
[19:59] <KingAnt> marv: I think the image tag used by the core is something like <img id="#"/>
[19:59] Ro0tSiEgE robert42 RobFlynn Robot101 ross22 roz
[20:00] <KingAnt> marv: Where the ID is the what is returned when you add the image to the imgstore using purple_imgstore_add
[20:00] <marv> Robot101: so how does the image get passed to serv_got_im() and serv_send_im()? just as the <img id="#" and then the prpl looks it up from the store?
[20:00] <KingAnt> marv: Right
[20:00] <marv> alright

Here's my plan with IMImages. make gtk_imhtml_[append|insert]_text_with_images instead just
gtkimhtml_[append|insert]_text (hrm maybe it should be called html instead of text), add a
function for purple to register for look up images, i.e. gtk_imhtml_set_get_img_fnc, so that
images can be looked up like that, instead of passing a GSList of them.
 */

02446 void gtk_imhtml_append_text_with_images (GtkIMHtml        *imhtml,
                                         const gchar      *text,
                                         GtkIMHtmlOptions  options,
                               GSList *unused)
{
      GtkTextIter iter, ins, sel;
      int ins_offset = 0, sel_offset = 0;
      gboolean fixins = FALSE, fixsel = FALSE;

      g_return_if_fail (imhtml != NULL);
      g_return_if_fail (GTK_IS_IMHTML (imhtml));
      g_return_if_fail (text != NULL);


      gtk_text_buffer_get_end_iter(imhtml->text_buffer, &iter);
      gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &ins, gtk_text_buffer_get_insert(imhtml->text_buffer));
      if (gtk_text_iter_equal(&iter, &ins) && gtk_text_buffer_get_selection_bounds(imhtml->text_buffer, NULL, NULL)) {
            fixins = TRUE;
            ins_offset = gtk_text_iter_get_offset(&ins);
      }

      gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &sel, gtk_text_buffer_get_selection_bound(imhtml->text_buffer));
      if (gtk_text_iter_equal(&iter, &sel) && gtk_text_buffer_get_selection_bounds(imhtml->text_buffer, NULL, NULL)) {
            fixsel = TRUE;
            sel_offset = gtk_text_iter_get_offset(&sel);
      }

      if (!(options & GTK_IMHTML_NO_SCROLL)) {
            GdkRectangle rect;
            int y, height;

            gtk_text_view_get_visible_rect(GTK_TEXT_VIEW(imhtml), &rect);
            gtk_text_view_get_line_yrange(GTK_TEXT_VIEW(imhtml), &iter, &y, &height);

            if (((y + height) - (rect.y + rect.height)) > height &&
                        gtk_text_buffer_get_char_count(imhtml->text_buffer)) {
                  /* If we are in the middle of smooth-scrolling, then take a scroll step.
                   * If we are not in the middle of smooth-scrolling, that means we were
                   * not looking at the end of the buffer before the new text was added,
                   * so do not scroll. */
                  if (imhtml->scroll_time)
                        smooth_scroll_cb(imhtml);
                  else
                        options |= GTK_IMHTML_NO_SCROLL;
            }
      }

      gtk_imhtml_insert_html_at_iter(imhtml, text, options, &iter);

      if (fixins) {
            gtk_text_buffer_get_iter_at_offset(imhtml->text_buffer, &ins, ins_offset);
            gtk_text_buffer_move_mark(imhtml->text_buffer, gtk_text_buffer_get_insert(imhtml->text_buffer), &ins);
      }

      if (fixsel) {
            gtk_text_buffer_get_iter_at_offset(imhtml->text_buffer, &sel, sel_offset);
            gtk_text_buffer_move_mark(imhtml->text_buffer, gtk_text_buffer_get_selection_bound(imhtml->text_buffer), &sel);
      }

      if (!(options & GTK_IMHTML_NO_SCROLL)) {
            gtk_imhtml_scroll_to_end(imhtml, (options & GTK_IMHTML_USE_SMOOTHSCROLLING));
      }
}

#define MAX_SCROLL_TIME 0.4 /* seconds */
#define SCROLL_DELAY 33 /* milliseconds */

/*
 * Smoothly scroll a GtkIMHtml.
 *
 * @return TRUE if the window needs to be scrolled further, FALSE if we're at the bottom.
 */
static gboolean smooth_scroll_cb(gpointer data)
{
      GtkIMHtml *imhtml = data;
      GtkAdjustment *adj = GTK_TEXT_VIEW(imhtml)->vadjustment;
      gdouble max_val = adj->upper - adj->page_size;
      gdouble scroll_val = gtk_adjustment_get_value(adj) + ((max_val - gtk_adjustment_get_value(adj)) / 3);

      g_return_val_if_fail(imhtml->scroll_time != NULL, FALSE);

      if (g_timer_elapsed(imhtml->scroll_time, NULL) > MAX_SCROLL_TIME || scroll_val >= max_val) {
            /* time's up. jump to the end and kill the timer */
            gtk_adjustment_set_value(adj, max_val);
            g_timer_destroy(imhtml->scroll_time);
            imhtml->scroll_time = NULL;
            g_source_remove(imhtml->scroll_src);
            imhtml->scroll_src = 0;
            return FALSE;
      }

      /* scroll by 1/3rd the remaining distance */
      gtk_adjustment_set_value(adj, scroll_val);
      return TRUE;
}

static gboolean scroll_idle_cb(gpointer data)
{
      GtkIMHtml *imhtml = data;
      GtkAdjustment *adj = GTK_TEXT_VIEW(imhtml)->vadjustment;
      if(adj) {
            gtk_adjustment_set_value(adj, adj->upper - adj->page_size);
      }
      imhtml->scroll_src = 0;
      return FALSE;
}

02553 void gtk_imhtml_scroll_to_end(GtkIMHtml *imhtml, gboolean smooth)
{
      if (imhtml->scroll_time)
            g_timer_destroy(imhtml->scroll_time);
      if (imhtml->scroll_src)
            g_source_remove(imhtml->scroll_src);
      if(smooth) {
            imhtml->scroll_time = g_timer_new();
            imhtml->scroll_src = g_timeout_add_full(G_PRIORITY_LOW, SCROLL_DELAY, smooth_scroll_cb, imhtml, NULL);
      } else {
            imhtml->scroll_time = NULL;
            imhtml->scroll_src = g_idle_add_full(G_PRIORITY_LOW, scroll_idle_cb, imhtml, NULL);
      }
}

/* CSS colors are either rgb (x,y,z) or #hex
 * we need to convert to hex if it is RGB */
static gchar*
parse_css_color(gchar *in_color)
{
      char *tmp = in_color;

      if (*tmp == 'r' && *(++tmp) == 'g' && *(++tmp) == 'b' && *(++tmp)) {
            int rgbval[] = {0, 0, 0};
            int count = 0;
            const char *v_start;

            while (*tmp && g_ascii_isspace(*tmp))
                  tmp++;
            if (*tmp != '(') {
                  /* We don't support rgba() */
                  purple_debug_warning("gtkimhtml", "Invalid rgb CSS color in '%s'!\n", in_color);
                  return in_color;
            }
            tmp++;

            while (count < 3) {
                  /* Skip any leading spaces */
                  while (*tmp && g_ascii_isspace(*tmp))
                        tmp++;

                  /* Find the subsequent contiguous digits */
                  v_start = tmp;
                  if (*v_start == '-')
                        tmp++;
                  while (*tmp && g_ascii_isdigit(*tmp))
                        tmp++;

                  if (tmp != v_start) {
                        char prev = *tmp;
                        *tmp = '\0';
                        rgbval[count] = atoi(v_start);
                        *tmp = prev;

                        /* deal with % */
                        while (*tmp && g_ascii_isspace(*tmp))
                              tmp++;
                        if (*tmp == '%') {
                              rgbval[count] = (rgbval[count] / 100.0) * 255;
                              tmp++;
                        }
                  } else {
                        purple_debug_warning("gtkimhtml", "Invalid rgb CSS color in '%s'!\n", in_color);
                        return in_color;
                  }

                  if (rgbval[count] > 255) {
                        rgbval[count] = 255;
                  } else if (rgbval[count] < 0) {
                        rgbval[count] = 0;
                  }

                  while (*tmp && g_ascii_isspace(*tmp))
                        tmp++;
                  if (*tmp == ',')
                        tmp++;

                  count++;
            }

            g_free(in_color);
            return g_strdup_printf("#%02X%02X%02X", rgbval[0], rgbval[1], rgbval[2]);
      }

      return in_color;
}

02640 void gtk_imhtml_insert_html_at_iter(GtkIMHtml        *imhtml,
                                    const gchar      *text,
                                    GtkIMHtmlOptions  options,
                                    GtkTextIter      *iter)
{
      GdkRectangle rect;
      gint pos = 0;
      gchar *ws;
      gchar *tag;
      gchar *bg = NULL;
      gint len;
      gint tlen, smilelen, wpos=0;
      gint type;
      const gchar *c;
      const gchar *amp;
      gint len_protocol;

      guint bold = 0,
            italics = 0,
            underline = 0,
            strike = 0,
            sub = 0,
            sup = 0,
            title = 0,
            pre = 0;

      gboolean br = FALSE;
      gboolean align_right = FALSE;
      gboolean rtl_direction = FALSE;
      gint align_line = 0;

      GSList *fonts = NULL;
      GObject *object;
      GtkIMHtmlScalable *scalable = NULL;

      g_return_if_fail (imhtml != NULL);
      g_return_if_fail (GTK_IS_IMHTML (imhtml));
      g_return_if_fail (text != NULL);
      c = text;
      len = strlen(text);
      ws = g_malloc(len + 1);
      ws[0] = '\0';

      g_object_set_data(G_OBJECT(imhtml), "gtkimhtml_numsmileys_thismsg", GINT_TO_POINTER(0));

      gtk_text_buffer_begin_user_action(imhtml->text_buffer);
      while (pos < len) {
            if (*c == '<' && gtk_imhtml_is_tag (c + 1, &tag, &tlen, &type)) {
                  c++;
                  pos++;
                  ws[wpos] = '\0';
                  br = FALSE;
                  switch (type)
                        {
                        case 1:           /* B */
                        case 2:           /* BOLD */
                        case 54:    /* STRONG */
                              if (!(options & GTK_IMHTML_NO_FORMATTING)) {
                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);

                                    if ((bold == 0) && (imhtml->format_functions & GTK_IMHTML_BOLD))
                                          gtk_imhtml_toggle_bold(imhtml);
                                    bold++;
                                    ws[0] = '\0'; wpos = 0;
                              }
                              break;
                        case 3:           /* /B */
                        case 4:           /* /BOLD */
                        case 55:    /* /STRONG */
                              if (!(options & GTK_IMHTML_NO_FORMATTING)) {
                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;

                                    if (bold) {
                                          bold--;
                                          if ((bold == 0) && (imhtml->format_functions & GTK_IMHTML_BOLD) && !imhtml->wbfo)
                                                gtk_imhtml_toggle_bold(imhtml);
                                    }
                              }
                              break;
                        case 5:           /* I */
                        case 6:           /* ITALIC */
                        case 52:    /* EM */
                              if (!(options & GTK_IMHTML_NO_FORMATTING)) {
                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;
                                    if ((italics == 0) && (imhtml->format_functions & GTK_IMHTML_ITALIC))
                                          gtk_imhtml_toggle_italic(imhtml);
                                    italics++;
                              }
                              break;
                        case 7:           /* /I */
                        case 8:           /* /ITALIC */
                        case 53:    /* /EM */
                              if (!(options & GTK_IMHTML_NO_FORMATTING)) {
                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;
                                    if (italics) {
                                          italics--;
                                          if ((italics == 0) && (imhtml->format_functions & GTK_IMHTML_ITALIC) && !imhtml->wbfo)
                                                gtk_imhtml_toggle_italic(imhtml);
                                    }
                              }
                              break;
                        case 9:           /* U */
                        case 10:    /* UNDERLINE */
                              if (!(options & GTK_IMHTML_NO_FORMATTING)) {
                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;
                                    if ((underline == 0) && (imhtml->format_functions & GTK_IMHTML_UNDERLINE))
                                          gtk_imhtml_toggle_underline(imhtml);
                                    underline++;
                              }
                              break;
                        case 11:    /* /U */
                        case 12:    /* /UNDERLINE */
                              if (!(options & GTK_IMHTML_NO_FORMATTING)) {
                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;
                                    if (underline) {
                                          underline--;
                                          if ((underline == 0) && (imhtml->format_functions & GTK_IMHTML_UNDERLINE) && !imhtml->wbfo)
                                                gtk_imhtml_toggle_underline(imhtml);
                                    }
                              }
                              break;
                        case 13:    /* S */
                        case 14:    /* STRIKE */
                              gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                              ws[0] = '\0'; wpos = 0;
                              if ((strike == 0) && (imhtml->format_functions & GTK_IMHTML_STRIKE))
                                    gtk_imhtml_toggle_strike(imhtml);
                              strike++;
                              break;
                        case 15:    /* /S */
                        case 16:    /* /STRIKE */
                              gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                              ws[0] = '\0'; wpos = 0;
                              if (strike)
                                    strike--;
                              if ((strike == 0) && (imhtml->format_functions & GTK_IMHTML_STRIKE) && !imhtml->wbfo)
                                    gtk_imhtml_toggle_strike(imhtml);
                              break;
                        case 17:    /* SUB */
                              /* FIXME: reimpliment this */
                              sub++;
                              break;
                        case 18:    /* /SUB */
                              /* FIXME: reimpliment this */
                              if (sub)
                                    sub--;
                              break;
                        case 19:    /* SUP */
                              /* FIXME: reimplement this */
                              sup++;
                        break;
                        case 20:    /* /SUP */
                              /* FIXME: reimplement this */
                              if (sup)
                                    sup--;
                              break;
                        case 21:    /* PRE */
                              /* FIXME: reimplement this */
                              pre++;
                              break;
                        case 22:    /* /PRE */
                              /* FIXME: reimplement this */
                              if (pre)
                                    pre--;
                              break;
                        case 23:    /* TITLE */
                              /* FIXME: what was this supposed to do anyway? */
                              title++;
                              break;
                        case 24:    /* /TITLE */
                              /* FIXME: make this undo whatever 23 was supposed to do */
                              if (title) {
                                    if (options & GTK_IMHTML_NO_TITLE) {
                                          wpos = 0;
                                          ws [wpos] = '\0';
                                    }
                                    title--;
                              }
                              break;
                        case 25:    /* BR */
                        case 58:    /* BR/ */
                        case 61:    /* BR (opt) */
                              ws[wpos] = '\n';
                              wpos++;
                              br = TRUE;
                              break;
                        case 26:        /* HR */
                        case 42:        /* HR (opt) */
                        {
                              int minus;
                              struct scalable_data *sd = g_new(struct scalable_data, 1);

                              ws[wpos++] = '\n';
                              gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);

                              sd->scalable = scalable = gtk_imhtml_hr_new();
                              sd->mark = gtk_text_buffer_create_mark(imhtml->text_buffer, NULL, iter, TRUE);
                              gtk_text_view_get_visible_rect(GTK_TEXT_VIEW(imhtml), &rect);
                              scalable->add_to(scalable, imhtml, iter);
                              minus = gtk_text_view_get_left_margin(GTK_TEXT_VIEW(imhtml)) +
                                      gtk_text_view_get_right_margin(GTK_TEXT_VIEW(imhtml));
                              scalable->scale(scalable, rect.width - minus, rect.height);
                              imhtml->scalables = g_list_append(imhtml->scalables, sd);
                              ws[0] = '\0'; wpos = 0;
                              ws[wpos++] = '\n';

                              break;
                        }
                        case 27:    /* /FONT */
                              if (fonts && !imhtml->wbfo) {
                                    GtkIMHtmlFontDetail *font = fonts->data;
                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;
                                    /* NEW_BIT (NEW_TEXT_BIT); */

                                    if (font->face && (imhtml->format_functions & GTK_IMHTML_FACE)) {
                                          gtk_imhtml_toggle_fontface(imhtml, NULL);
                                    }
                                    g_free (font->face);
                                    if (font->fore && (imhtml->format_functions & GTK_IMHTML_FORECOLOR)) {
                                          gtk_imhtml_toggle_forecolor(imhtml, NULL);
                                    }
                                    g_free (font->fore);
                                    if (font->back && (imhtml->format_functions & GTK_IMHTML_BACKCOLOR)) {
                                          gtk_imhtml_toggle_backcolor(imhtml, NULL);
                                    }
                                    g_free (font->back);
                                    g_free (font->sml);

                                    if ((font->size != 3) && (imhtml->format_functions & (GTK_IMHTML_GROW|GTK_IMHTML_SHRINK)))
                                          gtk_imhtml_font_set_size(imhtml, 3);

                                    fonts = g_slist_remove (fonts, font);
                                    g_free(font);

                                    if (fonts) {
                                          GtkIMHtmlFontDetail *font = fonts->data;

                                          if (font->face && (imhtml->format_functions & GTK_IMHTML_FACE))
                                                gtk_imhtml_toggle_fontface(imhtml, font->face);
                                          if (font->fore && (imhtml->format_functions & GTK_IMHTML_FORECOLOR))
                                                gtk_imhtml_toggle_forecolor(imhtml, font->fore);
                                          if (font->back && (imhtml->format_functions & GTK_IMHTML_BACKCOLOR))
                                                gtk_imhtml_toggle_backcolor(imhtml, font->back);
                                          if ((font->size != 3) && (imhtml->format_functions & (GTK_IMHTML_GROW|GTK_IMHTML_SHRINK)))
                                                gtk_imhtml_font_set_size(imhtml, font->size);
                                    }
                              }
                                    break;
                        case 28:        /* /A    */
                              gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                              gtk_imhtml_toggle_link(imhtml, NULL);
                              ws[0] = '\0'; wpos = 0;
                              break;

                        case 29:    /* P */
                        case 30:    /* /P */
                        case 31:    /* H3 */
                        case 32:    /* /H3 */
                        case 33:    /* HTML */
                        case 34:    /* /HTML */
                        case 35:    /* BODY */
                              break;
                        case 36:    /* /BODY */
                              gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                              ws[0] = '\0'; wpos = 0;
                              gtk_imhtml_toggle_background(imhtml, NULL);
                              break;
                        case 37:    /* FONT */
                        case 38:    /* HEAD */
                        case 39:    /* /HEAD */
                        case 40:    /* BINARY */
                        case 41:    /* /BINARY */
                              break;
                        case 43:    /* FONT (opt) */
                              {
                                    gchar *color, *back, *face, *size, *sml;
                                    GtkIMHtmlFontDetail *font, *oldfont = NULL;
                                    color = gtk_imhtml_get_html_opt (tag, "COLOR=");
                                    back = gtk_imhtml_get_html_opt (tag, "BACK=");
                                    face = gtk_imhtml_get_html_opt (tag, "FACE=");
                                    size = gtk_imhtml_get_html_opt (tag, "SIZE=");
                                    sml = gtk_imhtml_get_html_opt (tag, "SML=");
                                    if (!(color || back || face || size || sml))
                                          break;

                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;

                                    font = g_new0 (GtkIMHtmlFontDetail, 1);
                                    if (fonts)
                                          oldfont = fonts->data;

                                    if (color && !(options & GTK_IMHTML_NO_COLOURS) && (imhtml->format_functions & GTK_IMHTML_FORECOLOR)) {
                                          font->fore = color;
                                          gtk_imhtml_toggle_forecolor(imhtml, font->fore);
                                    } else
                                          g_free(color);

                                    if (back && !(options & GTK_IMHTML_NO_COLOURS) && (imhtml->format_functions & GTK_IMHTML_BACKCOLOR)) {
                                          font->back = back;
                                          gtk_imhtml_toggle_backcolor(imhtml, font->back);
                                    } else
                                          g_free(back);

                                    if (face && !(options & GTK_IMHTML_NO_FONTS) && (imhtml->format_functions & GTK_IMHTML_FACE)) {
                                          font->face = face;
                                          gtk_imhtml_toggle_fontface(imhtml, font->face);
                                    } else
                                          g_free(face);

                                    if (sml)
                                          font->sml = sml;
                                    else {
                                          g_free(sml);
                                          if (oldfont && oldfont->sml)
                                                font->sml = g_strdup(oldfont->sml);
                                    }

                                    if (size && !(options & GTK_IMHTML_NO_SIZES) && (imhtml->format_functions & (GTK_IMHTML_GROW|GTK_IMHTML_SHRINK))) {
                                          if (*size == '+') {
                                                sscanf (size + 1, "%hd", &font->size);
                                                font->size += 3;
                                          } else if (*size == '-') {
                                                sscanf (size + 1, "%hd", &font->size);
                                                font->size = MAX (0, 3 - font->size);
                                          } else if (isdigit (*size)) {
                                                sscanf (size, "%hd", &font->size);
                                          }
                                          if (font->size > 100)
                                                font->size = 100;
                                    } else if (oldfont)
                                          font->size = oldfont->size;
                                    else
                                          font->size = 3;
                                    if ((imhtml->format_functions & (GTK_IMHTML_GROW|GTK_IMHTML_SHRINK)) && (font->size != 3 || (oldfont && oldfont->size == 3)))
                                          gtk_imhtml_font_set_size(imhtml, font->size);
                                    g_free(size);
                                    fonts = g_slist_prepend (fonts, font);
                              }
                              break;
                        case 44:    /* BODY (opt) */
                              if (!(options & GTK_IMHTML_NO_COLOURS)) {
                                    char *bgcolor = gtk_imhtml_get_html_opt (tag, "BGCOLOR=");
                                    if (bgcolor && (imhtml->format_functions & GTK_IMHTML_BACKCOLOR)) {
                                          gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                          ws[0] = '\0'; wpos = 0;
                                          /* NEW_BIT(NEW_TEXT_BIT); */
                                          g_free(bg);
                                          bg = bgcolor;
                                          gtk_imhtml_toggle_background(imhtml, bg);
                                    } else
                                          g_free(bgcolor);
                              }
                              break;
                        case 45:    /* A (opt) */
                              {
                                    gchar *href = gtk_imhtml_get_html_opt (tag, "HREF=");
                                    if (href && (imhtml->format_functions & GTK_IMHTML_LINK)) {
                                          gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                          ws[0] = '\0'; wpos = 0;
                                          gtk_imhtml_toggle_link(imhtml, href);
                                    }
                                    g_free(href);
                              }
                              break;
                        case 46:    /* IMG (opt) */
                        case 59:    /* IMG */
                              {
                                    char *id;

                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;

                                    if (!(imhtml->format_functions & GTK_IMHTML_IMAGE))
                                          break;

                                    id = gtk_imhtml_get_html_opt(tag, "ID=");
                                    if (id) {
                                          gtk_imhtml_insert_image_at_iter(imhtml, atoi(id), iter);
                                          g_free(id);
                                    } else {
                                          char *src, *alt;
                                          src = gtk_imhtml_get_html_opt(tag, "SRC=");
                                          alt = gtk_imhtml_get_html_opt(tag, "ALT=");
                                          if (src) {
                                                gtk_imhtml_toggle_link(imhtml, src);
                                                gtk_text_buffer_insert(imhtml->text_buffer, iter, alt ? alt : src, -1);
                                                gtk_imhtml_toggle_link(imhtml, NULL);
                                          }
                                          g_free (src);
                                          g_free (alt);
                                    }
                                    break;
                              }
                        case 47:    /* P (opt) */
                        case 48:    /* H3 (opt) */
                        case 49:    /* HTML (opt) */
                        case 50:    /* CITE */
                        case 51:    /* /CITE */
                        case 56:    /* SPAN (opt) */
                              /* Inline CSS Support - Douglas Thrift
                               *
                               * color
                               * background
                               * font-family
                               * font-size
                               * text-decoration: underline
                               * font-weight: bold
                               * direction: rtl
                               * text-align: right
                               *
                               * TODO:
                               * background-color
                               * font-style
                               */
                              {
                                    gchar *style, *color, *background, *family, *size, *direction, *alignment;
                                    gchar *textdec, *weight;
                                    GtkIMHtmlFontDetail *font, *oldfont = NULL;
                                    style = gtk_imhtml_get_html_opt (tag, "style=");

                                    if (!style) break;

                                    color = purple_markup_get_css_property (style, "color");
                                    background = purple_markup_get_css_property (style, "background");
                                    family = purple_markup_get_css_property (style, "font-family");
                                    size = purple_markup_get_css_property (style, "font-size");
                                    textdec = purple_markup_get_css_property (style, "text-decoration");
                                    weight = purple_markup_get_css_property (style, "font-weight");
                                    direction = purple_markup_get_css_property (style, "direction");
                                    alignment = purple_markup_get_css_property (style, "text-align");


                                    if (!(color || family || size || background || textdec || weight || direction || alignment)) {
                                          g_free(style);
                                          break;
                                    }


                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;
                                    /* NEW_BIT (NEW_TEXT_BIT); */

                                    /* Bi-Directional text support */
                                    if (direction && (!g_ascii_strncasecmp(direction, "RTL", 3))) {
                                          rtl_direction = TRUE;
                                          /* insert RLE character to set direction */
                                          ws[wpos++]  = 0xE2;
                                          ws[wpos++]  = 0x80;
                                          ws[wpos++]  = 0xAB;
                                          ws[wpos]  = '\0';
                                          gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                          ws[0] = '\0'; wpos = 0;
                                    }
                                    g_free(direction);

                                    if (alignment && (!g_ascii_strncasecmp(alignment, "RIGHT", 5))) {
                                          align_right = TRUE;
                                          align_line = gtk_text_iter_get_line(iter);
                                    }
                                    g_free(alignment);

                                    font = g_new0 (GtkIMHtmlFontDetail, 1);
                                    if (fonts)
                                          oldfont = fonts->data;

                                    if (color && !(options & GTK_IMHTML_NO_COLOURS) && (imhtml->format_functions & GTK_IMHTML_FORECOLOR)) {
                                          font->fore = parse_css_color(color);
                                          gtk_imhtml_toggle_forecolor(imhtml, font->fore);
                                    } else {
                                          if (oldfont && oldfont->fore)
                                                font->fore = g_strdup(oldfont->fore);
                                          g_free(color);
                                    }

                                    if (background && !(options & GTK_IMHTML_NO_COLOURS) && (imhtml->format_functions & GTK_IMHTML_BACKCOLOR)) {
                                          font->back = parse_css_color(background);
                                          gtk_imhtml_toggle_backcolor(imhtml, font->back);
                                    } else {
                                          if (oldfont && oldfont->back)
                                                font->back = g_strdup(oldfont->back);
                                          g_free(background);
                                    }

                                    if (family && !(options & GTK_IMHTML_NO_FONTS) && (imhtml->format_functions & GTK_IMHTML_FACE)) {
                                          font->face = family;
                                          gtk_imhtml_toggle_fontface(imhtml, font->face);
                                    } else {
                                          if (oldfont && oldfont->face)
                                                font->face = g_strdup(oldfont->face);
                                          g_free(family);
                                    }
                                    if (font->face && (atoi(font->face) > 100)) {
                                          /* WTF is this? */
                                          /* Maybe it sets a max size on the font face?  I seem to
                                           * remember bad things happening if the font size was
                                           * 2 billion */
                                          g_free(font->face);
                                          font->face = g_strdup("100");
                                    }

                                    if (oldfont && oldfont->sml)
                                          font->sml = g_strdup(oldfont->sml);

                                    if (size && !(options & GTK_IMHTML_NO_SIZES) && (imhtml->format_functions & (GTK_IMHTML_SHRINK|GTK_IMHTML_GROW))) {
                                          if (g_ascii_strcasecmp(size, "xx-small") == 0)
                                                font->size = 1;
                                          else if (g_ascii_strcasecmp(size, "smaller") == 0
                                                  || g_ascii_strcasecmp(size, "x-small") == 0)
                                                font->size = 2;
                                          else if (g_ascii_strcasecmp(size, "medium") == 0)
                                                font->size = 3;
                                          else if (g_ascii_strcasecmp(size, "large") == 0
                                                  || g_ascii_strcasecmp(size, "larger") == 0)
                                                font->size = 4;
                                          else if (g_ascii_strcasecmp(size, "x-large") == 0)
                                                font->size = 5;
                                          else if (g_ascii_strcasecmp(size, "xx-large") == 0)
                                                font->size = 6;

                                          /*
                                           * TODO: Handle other values, like percentages, or
                                           * lengths specified as em, ex, px, in, cm, mm, pt
                                           * or pc.  Or even better, use an actual HTML
                                           * renderer like webkit.
                                           */
                                          if (font->size > 0)
                                              gtk_imhtml_font_set_size(imhtml, font->size);
                                    }
                                    else if (oldfont)
                                    {
                                        font->size = oldfont->size;
                                    }

                                    if (oldfont)
                                    {
                                        font->underline = oldfont->underline;
                                    }
                                    if (textdec && font->underline != 1
                                          && g_ascii_strcasecmp(textdec, "underline") == 0
                                          && (imhtml->format_functions & GTK_IMHTML_UNDERLINE)
                                          && !(options & GTK_IMHTML_NO_FORMATTING))
                                    {
                                        gtk_imhtml_toggle_underline(imhtml);
                                        font->underline = 1;
                                    }
                                    g_free(textdec);

                                    if (oldfont)
                                    {
                                          font->bold = oldfont->bold;
                                    }
                                    if (weight)
                                    {
                                          if(!g_ascii_strcasecmp(weight, "normal")) {
                                                font->bold = 0;
                                          } else if(!g_ascii_strcasecmp(weight, "bold")) {
                                                font->bold = 1;
                                          } else if(!g_ascii_strcasecmp(weight, "bolder")) {
                                                font->bold++;
                                          } else if(!g_ascii_strcasecmp(weight, "lighter")) {
                                                if(font->bold > 0)
                                                      font->bold--;
                                          } else {
                                                int num = atoi(weight);
                                                if(num >= 700)
                                                      font->bold = 1;
                                                else
                                                      font->bold = 0;
                                          }
                                          if (((font->bold && oldfont && !oldfont->bold) || (oldfont && oldfont->bold && !font->bold) || (font->bold && !oldfont)) && !(options & GTK_IMHTML_NO_FORMATTING))
                                          {
                                                gtk_imhtml_toggle_bold(imhtml);
                                          }
                                          g_free(weight);
                                    }

                                    g_free(style);
                                    g_free(size);
                                    fonts = g_slist_prepend (fonts, font);
                              }
                              break;
                        case 57:    /* /SPAN */
                              /* Inline CSS Support - Douglas Thrift */
                              if (fonts && !imhtml->wbfo) {
                                    GtkIMHtmlFontDetail *oldfont = NULL;
                                    GtkIMHtmlFontDetail *font = fonts->data;
                                    gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                                    ws[0] = '\0'; wpos = 0;
                                    /* NEW_BIT (NEW_TEXT_BIT); */
                                    fonts = g_slist_remove (fonts, font);
                                    if (fonts)
                                        oldfont = fonts->data;

                                    if (!oldfont) {
                                          gtk_imhtml_font_set_size(imhtml, 3);
                                          if (font->underline && !(options & GTK_IMHTML_NO_FORMATTING))
                                              gtk_imhtml_toggle_underline(imhtml);
                                          if (font->bold && !(options & GTK_IMHTML_NO_FORMATTING))
                                                gtk_imhtml_toggle_bold(imhtml);
                                          if (!(options & GTK_IMHTML_NO_FONTS))
                                                gtk_imhtml_toggle_fontface(imhtml, NULL);
                                          if (!(options & GTK_IMHTML_NO_COLOURS))
                                                gtk_imhtml_toggle_forecolor(imhtml, NULL);
                                          if (!(options & GTK_IMHTML_NO_COLOURS))
                                                gtk_imhtml_toggle_backcolor(imhtml, NULL);
                                    }
                                    else
                                    {

                                        if ((font->size != oldfont->size) && !(options & GTK_IMHTML_NO_SIZES))
                                              gtk_imhtml_font_set_size(imhtml, oldfont->size);

                                          if ((font->underline != oldfont->underline) && !(options & GTK_IMHTML_NO_FORMATTING))
                                              gtk_imhtml_toggle_underline(imhtml);

                                          if (((font->bold && !oldfont->bold) || (oldfont->bold && !font->bold)) && !(options & GTK_IMHTML_NO_FORMATTING))
                                                gtk_imhtml_toggle_bold(imhtml);

                                          if (font->face && (!oldfont->face || strcmp(font->face, oldfont->face) != 0) && !(options & GTK_IMHTML_NO_FONTS))
                                              gtk_imhtml_toggle_fontface(imhtml, oldfont->face);

                                          if (font->fore && (!oldfont->fore || strcmp(font->fore, oldfont->fore) != 0) && !(options & GTK_IMHTML_NO_COLOURS))
                                              gtk_imhtml_toggle_forecolor(imhtml, oldfont->fore);

                                          if (font->back && (!oldfont->back || strcmp(font->back, oldfont->back) != 0) && !(options & GTK_IMHTML_NO_COLOURS))
                                          gtk_imhtml_toggle_backcolor(imhtml, oldfont->back);
                                    }

                                    g_free (font->face);
                                    g_free (font->fore);
                                    g_free (font->back);
                                    g_free (font->sml);

                                    g_free (font);
                              }
                              break;
                        case 60:    /* SPAN */
                              break;
                        case 62:    /* comment */
                              /* NEW_BIT (NEW_TEXT_BIT); */
                              ws[wpos] = '\0';

                              gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);

#if FALSE && GTK_CHECK_VERSION(2,10,10)
                              wpos = g_snprintf (ws, len, "%s", tag);
                              gtk_text_buffer_insert_with_tags_by_name(imhtml->text_buffer, iter, ws, wpos, "comment", NULL);
#else
                              if (imhtml->show_comments && !(options & GTK_IMHTML_NO_COMMENTS)) {
                                    wpos = g_snprintf (ws, len, "%s", tag);
                                    gtk_text_buffer_insert_with_tags_by_name(imhtml->text_buffer, iter, ws, wpos, "comment", NULL);
                              }
#endif
                              ws[0] = '\0'; wpos = 0;

                              /* NEW_BIT (NEW_COMMENT_BIT); */
                              break;
                        default:
                              break;
                        }
                  c += tlen;
                  pos += tlen;
                  g_free(tag); /* This was allocated back in VALID_TAG() */
            } else if (imhtml->edit.link == NULL &&
                        !(options & GTK_IMHTML_NO_SMILEY) &&
                        gtk_imhtml_is_smiley(imhtml, fonts, c, &smilelen)) {
                  GtkIMHtmlFontDetail *fd;
                  gchar *sml = NULL;

                  br = FALSE;

                  if (fonts) {
                        fd = fonts->data;
                        sml = fd->sml;
                  }
                  if (!sml)
                        sml = imhtml->protocol_name;

                  gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                  wpos = g_snprintf (ws, smilelen + 1, "%s", c);

                  gtk_imhtml_insert_smiley_at_iter(imhtml, sml, ws, iter);

                  c += smilelen;
                  pos += smilelen;
                  wpos = 0;
                  ws[0] = 0;
            } else if (*c == '&' && (amp = purple_markup_unescape_entity(c, &tlen))) {
                  br = FALSE;
                  while(*amp) {
                        ws [wpos++] = *amp++;
                  }
                  c += tlen;
                  pos += tlen;
            } else if (*c == '\n') {
                  if (!(options & GTK_IMHTML_NO_NEWLINE)) {
                        ws[wpos] = '\n';
                        wpos++;
                        gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                        ws[0] = '\0'; wpos = 0;
                        /* NEW_BIT (NEW_TEXT_BIT); */
                  } else if (!br) {  /* Don't insert a space immediately after an HTML break */
                        /* A newline is defined by HTML as whitespace, which means we have to replace it with a word boundary.
                         * word breaks vary depending on the language used, so the correct thing to do is to use Pango to determine
                         * what language this is, determine the proper word boundary to use, and insert that. I'm just going to insert
                         * a space instead.  What are the non-English speakers going to do?  Complain in a language I'll understand?
                         * Bu-wahaha! */
                        ws[wpos] = ' ';
                        wpos++;
                        gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                        ws[0] = '\0'; wpos = 0;
                  }
                  c++;
                  pos++;
            } else if ((pos == 0 || wpos == 0 || isspace(*(c - 1))) &&
                       (len_protocol = gtk_imhtml_is_protocol(c)) > 0 &&
                           c[len_protocol] && !isspace(c[len_protocol]) &&
                           (c[len_protocol] != '<' || !gtk_imhtml_is_tag(c + 1, NULL, NULL, NULL))) {
                  br = FALSE;
                  if (wpos > 0) {
                        gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                        ws[0] = '\0'; wpos = 0;
                  }
                  while (len_protocol--) {
                        /* Skip the next len_protocol characters, but
                         * make sure they're copied into the ws array.
                         */
                        ws [wpos++] = *c++;
                        pos++;
                  }
                  if (!imhtml->edit.link && (imhtml->format_functions & GTK_IMHTML_LINK)) {
                        while (*c && !isspace((int)*c) &&
                                    (*c != '<' || !gtk_imhtml_is_tag(c + 1, NULL, NULL, NULL))) {
                              if (*c == '&' && (amp = purple_markup_unescape_entity(c, &tlen))) {
                                    while (*amp)
                                          ws[wpos++] = *amp++;
                                    c += tlen;
                                    pos += tlen;
                              } else {
                                    ws [wpos++] = *c++;
                                    pos++;
                              }
                        }
                        ws[wpos] = '\0';
                        gtk_imhtml_toggle_link(imhtml, ws);
                        gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
                        ws[0] = '\0'; wpos = 0;
                        gtk_imhtml_toggle_link(imhtml, NULL);
                  }
            } else if (*c) {
                  br = FALSE;
                  ws [wpos++] = *c++;
                  pos++;
            } else {
                  break;
            }
      }
      gtk_text_buffer_insert(imhtml->text_buffer, iter, ws, wpos);
      ws[0] = '\0'; wpos = 0;

      /* NEW_BIT(NEW_TEXT_BIT); */

      if(align_right) {
            /* insert RLM+LRM at beginning of the line to set alignment */
            GtkTextIter line_iter;
            line_iter = *iter;
            gtk_text_iter_set_line(&line_iter, align_line);
            /* insert RLM character to set alignment */
            ws[wpos++]  = 0xE2;
            ws[wpos++]  = 0x80;
            ws[wpos++]  = 0x8F;

            if (!rtl_direction)
            {
                  /* insert LRM character to set direction */
                  /* (alignment=right and direction=LTR) */
                  ws[wpos++]  = 0xE2;
                  ws[wpos++]  = 0x80;
                  ws[wpos++]  = 0x8E;
            }

            ws[wpos]  = '\0';
            gtk_text_buffer_insert(imhtml->text_buffer, &line_iter, ws, wpos);
            gtk_text_buffer_get_end_iter(gtk_text_iter_get_buffer(&line_iter), iter);
            ws[0] = '\0'; wpos = 0;
      }

      while (fonts) {
            GtkIMHtmlFontDetail *font = fonts->data;
            fonts = g_slist_remove (fonts, font);
            g_free (font->face);
            g_free (font->fore);
            g_free (font->back);
            g_free (font->sml);
            g_free (font);
      }

      g_free(ws);
      g_free(bg);

      if (!imhtml->wbfo)
            gtk_imhtml_close_tags(imhtml, iter);

      object = g_object_ref(G_OBJECT(imhtml));
      g_signal_emit(object, signals[UPDATE_FORMAT], 0);
      g_object_unref(object);

      gtk_text_buffer_end_user_action(imhtml->text_buffer);
}

03457 void gtk_imhtml_remove_smileys(GtkIMHtml *imhtml)
{
      g_hash_table_destroy(imhtml->smiley_data);
      gtk_smiley_tree_destroy(imhtml->default_smilies);
      imhtml->smiley_data = g_hash_table_new_full(g_str_hash, g_str_equal,
                  g_free, (GDestroyNotify)gtk_smiley_tree_destroy);
      imhtml->default_smilies = gtk_smiley_tree_new();
}

03466 void       gtk_imhtml_show_comments    (GtkIMHtml        *imhtml,
                              gboolean          show)
{
#if FALSE && GTK_CHECK_VERSION(2,10,10)
      GtkTextTag *tag;
      tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(imhtml->text_buffer), "comment");
      if (tag)
            g_object_set(G_OBJECT(tag), "invisible", !show, NULL);
#endif
      imhtml->show_comments = show;
}

const char *
03479 gtk_imhtml_get_protocol_name(GtkIMHtml *imhtml) {
      return imhtml->protocol_name;
}

void
03484 gtk_imhtml_set_protocol_name(GtkIMHtml *imhtml, const gchar *protocol_name) {
      g_free(imhtml->protocol_name);
      imhtml->protocol_name = g_strdup(protocol_name);
}

void
03490 gtk_imhtml_delete(GtkIMHtml *imhtml, GtkTextIter *start, GtkTextIter *end) {
      GList *l;
      GSList *sl;
      GtkTextIter i, i_s, i_e;
      GObject *object = g_object_ref(G_OBJECT(imhtml));

      if (start == NULL) {
            gtk_text_buffer_get_start_iter(imhtml->text_buffer, &i_s);
            start = &i_s;
      }

      if (end == NULL) {
            gtk_text_buffer_get_end_iter(imhtml->text_buffer, &i_e);
            end = &i_e;
      }

      l = imhtml->scalables;
      while (l) {
            GList *next = l->next;
            struct scalable_data *sd = l->data;
            gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer,
                  &i, sd->mark);
            if (gtk_text_iter_in_range(&i, start, end)) {
                  GtkIMHtmlScalable *scale = GTK_IMHTML_SCALABLE(sd->scalable);
                  scale->free(scale);
                  g_free(sd);
                  imhtml->scalables = g_list_delete_link(imhtml->scalables, l);
            }
            l = next;
      }

      sl = imhtml->im_images;
      while (sl) {
            GSList *next = sl->next;
            struct im_image_data *img_data = sl->data;
            gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer,
                  &i, img_data->mark);
            if (gtk_text_iter_in_range(&i, start, end)) {
                  if (imhtml->funcs->image_unref)
                        imhtml->funcs->image_unref(img_data->id);
                  imhtml->im_images = g_slist_delete_link(imhtml->im_images, sl);
                  g_free(img_data);
            }
            sl = next;
      }
      gtk_text_buffer_delete(imhtml->text_buffer, start, end);

      g_object_set_data(G_OBJECT(imhtml), "gtkimhtml_numsmileys_total", GINT_TO_POINTER(0));

      g_object_unref(object);
}

03542 void gtk_imhtml_page_up (GtkIMHtml *imhtml)
{
      GdkRectangle rect;
      GtkTextIter iter;

      gtk_text_view_get_visible_rect(GTK_TEXT_VIEW(imhtml), &rect);
      gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(imhtml), &iter, rect.x,
                                                         rect.y - rect.height);
      gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(imhtml), &iter, 0, TRUE, 0, 0);

}
03553 void gtk_imhtml_page_down (GtkIMHtml *imhtml)
{
      GdkRectangle rect;
      GtkTextIter iter;

      gtk_text_view_get_visible_rect(GTK_TEXT_VIEW(imhtml), &rect);
      gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(imhtml), &iter, rect.x,
                                                         rect.y + rect.height);
      gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(imhtml), &iter, 0, TRUE, 0, 0);
}

/* GtkIMHtmlScalable, gtk_imhtml_image, gtk_imhtml_hr */
03565 GtkIMHtmlScalable *gtk_imhtml_image_new(GdkPixbuf *img, const gchar *filename, int id)
{
      GtkIMHtmlImage *im_image = g_malloc(sizeof(GtkIMHtmlImage));

      GTK_IMHTML_SCALABLE(im_image)->scale = gtk_imhtml_image_scale;
      GTK_IMHTML_SCALABLE(im_image)->add_to = gtk_imhtml_image_add_to;
      GTK_IMHTML_SCALABLE(im_image)->free = gtk_imhtml_image_free;

      im_image->pixbuf = img;
      im_image->image = GTK_IMAGE(gtk_image_new_from_pixbuf(im_image->pixbuf));
      im_image->width = gdk_pixbuf_get_width(img);
      im_image->height = gdk_pixbuf_get_height(img);
      im_image->mark = NULL;
      im_image->filename = g_strdup(filename);
      im_image->id = id;
      im_image->filesel = NULL;

      g_object_ref(img);
      return GTK_IMHTML_SCALABLE(im_image);
}

static gboolean
animate_image_cb(gpointer data)
{
      GtkIMHtmlImage *im_image;
      int width, height;
      int delay;

      im_image = data;

      /* Update the pointer to this GdkPixbuf frame of the animation */
      if (gdk_pixbuf_animation_iter_advance(GTK_IMHTML_ANIMATION(im_image)->iter, NULL)) {
            GdkPixbuf *pb = gdk_pixbuf_animation_iter_get_pixbuf(GTK_IMHTML_ANIMATION(im_image)->iter);
            g_object_unref(G_OBJECT(im_image->pixbuf));
            im_image->pixbuf = gdk_pixbuf_copy(pb);

            /* Update the displayed GtkImage */
            width = gdk_pixbuf_get_width(gtk_image_get_pixbuf(im_image->image));
            height = gdk_pixbuf_get_height(gtk_image_get_pixbuf(im_image->image));
            if (width > 0 && height > 0)
            {
                  /* Need to scale the new frame to the same size as the old frame */
                  GdkPixbuf *tmp;
                  tmp = gdk_pixbuf_scale_simple(im_image->pixbuf, width, height, GDK_INTERP_BILINEAR);
                  gtk_image_set_from_pixbuf(im_image->image, tmp);
                  g_object_unref(G_OBJECT(tmp));
            } else {
                  /* Display at full-size */
                  gtk_image_set_from_pixbuf(im_image->image, im_image->pixbuf);
            }
      }

      delay = MIN(gdk_pixbuf_animation_iter_get_delay_time(GTK_IMHTML_ANIMATION(im_image)->iter), 100);
      GTK_IMHTML_ANIMATION(im_image)->timer = g_timeout_add(delay, animate_image_cb, im_image);

      return FALSE;
}

03623 GtkIMHtmlScalable *gtk_imhtml_animation_new(GdkPixbufAnimation *anim, const gchar *filename, int id)
{
      GtkIMHtmlImage *im_image = (GtkIMHtmlImage *) g_new0(GtkIMHtmlAnimation, 1);

      GTK_IMHTML_SCALABLE(im_image)->scale = gtk_imhtml_image_scale;
      GTK_IMHTML_SCALABLE(im_image)->add_to = gtk_imhtml_image_add_to;
      GTK_IMHTML_SCALABLE(im_image)->free = gtk_imhtml_animation_free;

      GTK_IMHTML_ANIMATION(im_image)->anim = anim;
      if (gdk_pixbuf_animation_is_static_image(anim)) {
            im_image->pixbuf = gdk_pixbuf_animation_get_static_image(anim);
            g_object_ref(im_image->pixbuf);
      } else {
            int delay;
            GdkPixbuf *pb;
            GTK_IMHTML_ANIMATION(im_image)->iter = gdk_pixbuf_animation_get_iter(anim, NULL);
            pb = gdk_pixbuf_animation_iter_get_pixbuf(GTK_IMHTML_ANIMATION(im_image)->iter);
            im_image->pixbuf = gdk_pixbuf_copy(pb);
            delay = MIN(gdk_pixbuf_animation_iter_get_delay_time(GTK_IMHTML_ANIMATION(im_image)->iter), 100);
            GTK_IMHTML_ANIMATION(im_image)->timer = g_timeout_add(delay, animate_image_cb, im_image);
      }
      im_image->image = GTK_IMAGE(gtk_image_new_from_pixbuf(im_image->pixbuf));
      im_image->width = gdk_pixbuf_animation_get_width(anim);
      im_image->height = gdk_pixbuf_animation_get_height(anim);
      im_image->filename = g_strdup(filename);
      im_image->id = id;

      g_object_ref(anim);

      return GTK_IMHTML_SCALABLE(im_image);
}

03655 void gtk_imhtml_image_scale(GtkIMHtmlScalable *scale, int width, int height)
{
      GtkIMHtmlImage *im_image = (GtkIMHtmlImage *)scale;

      if (im_image->width > width || im_image->height > height) {
            double ratio_w, ratio_h, ratio;
            int new_h, new_w;
            GdkPixbuf *new_image = NULL;

            ratio_w = ((double)width - 2) / im_image->width;
            ratio_h = ((double)height - 2) / im_image->height;

            ratio = (ratio_w < ratio_h) ? ratio_w : ratio_h;

            new_w = (int)(im_image->width * ratio);
            new_h = (int)(im_image->height * ratio);

            new_image = gdk_pixbuf_scale_simple(im_image->pixbuf, new_w, new_h, GDK_INTERP_BILINEAR);
            gtk_image_set_from_pixbuf(im_image->image, new_image);
            g_object_unref(G_OBJECT(new_image));
      } else if (gdk_pixbuf_get_width(gtk_image_get_pixbuf(im_image->image)) != im_image->width) {
            /* Enough space to show the full-size of the image. */
            GdkPixbuf *new_image;

            new_image = gdk_pixbuf_scale_simple(im_image->pixbuf, im_image->width, im_image->height, GDK_INTERP_BILINEAR);
            gtk_image_set_from_pixbuf(im_image->image, new_image);
            g_object_unref(G_OBJECT(new_image));
      }
}

static void
image_save_yes_cb(GtkIMHtmlImageSave *save, const char *filename)
{
      GError *error = NULL;
      GtkIMHtmlImage *image = (GtkIMHtmlImage *)save->image;

      gtk_widget_destroy(image->filesel);
      image->filesel = NULL;

      if (save->data && save->datasize) {
#if GLIB_CHECK_VERSION(2,8,0)
            g_file_set_contents(filename, save->data, save->datasize, &error);
#else
            purple_util_write_data_to_file_absolute(filename, save->data, save->datasize);
#endif
      } else {
            gchar *type = NULL;
#if GTK_CHECK_VERSION(2,2,0)
            GSList *formats = gdk_pixbuf_get_formats();
#else
            char *basename = g_path_get_basename(filename);
            char *ext = strrchr(basename, '.');
#endif
            char *newfilename;

#if GTK_CHECK_VERSION(2,2,0)
            while (formats) {
                  GdkPixbufFormat *format = formats->data;
                  gchar **extensions = gdk_pixbuf_format_get_extensions(format);
                  gpointer p = extensions;

                  while(gdk_pixbuf_format_is_writable(format) && extensions && extensions[0]){
                        gchar *fmt_ext = extensions[0];
                        const gchar* file_ext = filename + strlen(filename) - strlen(fmt_ext);

                        if(!g_ascii_strcasecmp(fmt_ext, file_ext)){
                              type = gdk_pixbuf_format_get_name(format);
                              break;
                        }

                        extensions++;
                  }

                  g_strfreev(p);

                  if (type)
                        break;

                  formats = formats->next;
            }

            g_slist_free(formats);
#else
            /* this is really ugly code, but I think it will work */
            if (ext) {
                  ext++;
                  if (!g_ascii_strcasecmp(ext, "jpeg") || !g_ascii_strcasecmp(ext, "jpg"))
                        type = g_strdup("jpeg");
                  else if (!g_ascii_strcasecmp(ext, "png"))
                        type = g_strdup("png");
            }

            g_free(basename);
#endif

            /* If I can't find a valid type, I will just tell the user about it and then assume
               it's a png */
            if (!type){
                  char *basename, *tmp;
                  char *dirname;
#if GTK_CHECK_VERSION(2,4,0)
                  GtkWidget *dialog = gtk_message_dialog_new_with_markup(NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
                                          _("<span size='larger' weight='bold'>Unrecognized file type</span>\n\nDefaulting to PNG."));
#else
                  GtkWidget *dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
                                          _("Unrecognized file type\n\nDefaulting to PNG."));
#endif

                  g_signal_connect_swapped(dialog, "response", G_CALLBACK (gtk_widget_destroy), dialog);
                  gtk_widget_show(dialog);

                  type = g_strdup("png");
                  dirname = g_path_get_dirname(filename);
                  basename = g_path_get_basename(filename);
                  tmp = strrchr(basename, '.');
                  if (tmp != NULL)
                        tmp[0] = '\0';
                  newfilename = g_strdup_printf("%s" G_DIR_SEPARATOR_S  "%s.png", dirname, basename);
                  g_free(dirname);
                  g_free(basename);
            } else {
                  /*
                   * We're able to save the file in it's original format, so we
                   * can use the original file name.
                   */
                  newfilename = g_strdup(filename);
            }

            gdk_pixbuf_save(image->pixbuf, newfilename, type, &error, NULL);

            g_free(newfilename);
            g_free(type);
      }

      if (error){
#if GTK_CHECK_VERSION(2,4,0)
            GtkWidget *dialog = gtk_message_dialog_new_with_markup(NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
                        _("<span size='larger' weight='bold'>Error saving image</span>\n\n%s"), error->message);
#else
            GtkWidget *dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
                        _("Error saving image\n\n%s"), error->message);
#endif
            g_signal_connect_swapped(dialog, "response", G_CALLBACK (gtk_widget_destroy), dialog);
            gtk_widget_show(dialog);
            g_error_free(error);
      }
}

#if GTK_CHECK_VERSION(2,4,0) /* FILECHOOSER */
static void
image_save_check_if_exists_cb(GtkWidget *widget, gint response, GtkIMHtmlImageSave *save)
{
      gchar *filename;
      GtkIMHtmlImage *image = (GtkIMHtmlImage *)save->image;

      if (response != GTK_RESPONSE_ACCEPT) {
            gtk_widget_destroy(widget);
            image->filesel = NULL;
            return;
      }

      filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget));
#else /* FILECHOOSER */
static void
image_save_check_if_exists_cb(GtkWidget *button, GtkIMHtmlImageSave *save)
{
      gchar *filename;
      GtkIMHtmlImage *image = (GtkIMHtmlImage *)save->image;

      filename = g_strdup(gtk_file_selection_get_filename(GTK_FILE_SELECTION(image->filesel)));

      if (g_file_test(filename, G_FILE_TEST_IS_DIR)) {
            gchar *dirname;
            /* append a / is needed */
            if (filename[strlen(filename) - 1] != G_DIR_SEPARATOR) {
                  dirname = g_strconcat(filename, G_DIR_SEPARATOR_S, NULL);
            } else {
                  dirname = g_strdup(filename);
            }
            gtk_file_selection_set_filename(GTK_FILE_SELECTION(image->filesel), dirname);
            g_free(dirname);
            g_free(filename);
            return;
      }
#endif /* FILECHOOSER */
#if 0 /* mismatched curly braces */
      }
#endif

      /*
       * XXX - We should probably prompt the user to determine if they really
       * want to overwrite the file or not.  However, I don't feel like doing
       * that, so we're just always going to overwrite if the file exists.
       */
      /*
      if (g_file_test(filename, G_FILE_TEST_EXISTS)) {
      } else
            image_save_yes_cb(image, filename);
      */

      image_save_yes_cb(save, filename);

      g_free(filename);
}

#if !GTK_CHECK_VERSION(2,4,0) /* FILECHOOSER */
static void
image_save_cancel_cb(GtkIMHtmlImage *image)
{
      gtk_widget_destroy(image->filesel);
      image->filesel = NULL;
}
#endif /* FILECHOOSER */

static void
gtk_imhtml_image_save(GtkWidget *w, GtkIMHtmlImageSave *save)
{
      GtkIMHtmlImage *image = (GtkIMHtmlImage *)save->image;

      if (image->filesel != NULL) {
            gtk_window_present(GTK_WINDOW(image->filesel));
            return;
      }

#if GTK_CHECK_VERSION(2,4,0) /* FILECHOOSER */
      image->filesel = gtk_file_chooser_dialog_new(_("Save Image"),
                                    NULL,
                                    GTK_FILE_CHOOSER_ACTION_SAVE,
                                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                                    GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
                                    NULL);
      gtk_dialog_set_default_response(GTK_DIALOG(image->filesel), GTK_RESPONSE_ACCEPT);
      if (image->filename != NULL)
            gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(image->filesel), image->filename);
      g_signal_connect(G_OBJECT(GTK_FILE_CHOOSER(image->filesel)), "response",
                               G_CALLBACK(image_save_check_if_exists_cb), save);
#else /* FILECHOOSER */
      image->filesel = gtk_file_selection_new(_("Save Image"));
      if (image->filename != NULL)
            gtk_file_selection_set_filename(GTK_FILE_SELECTION(image->filesel), image->filename);
      g_signal_connect_swapped(G_OBJECT(GTK_FILE_SELECTION(image->filesel)), "delete_event",
                                           G_CALLBACK(image_save_cancel_cb), image);
      g_signal_connect_swapped(G_OBJECT(GTK_FILE_SELECTION(image->filesel)->cancel_button),
                                           "clicked", G_CALLBACK(image_save_cancel_cb), image);
      g_signal_connect(G_OBJECT(GTK_FILE_SELECTION(image->filesel)->ok_button), "clicked",
                               G_CALLBACK(image_save_check_if_exists_cb), save);
#endif /* FILECHOOSER */

      gtk_widget_show(image->filesel);
}

static void
gtk_imhtml_custom_smiley_save(GtkWidget *w, GtkIMHtmlImageSave *save)
{
      GtkIMHtmlImage *image = (GtkIMHtmlImage *)save->image;
      
      /* Create an add dialog */
      PidginSmiley *editor = pidgin_smiley_edit(NULL, NULL);
      pidgin_smiley_editor_set_shortcut(editor, image->filename);
      pidgin_smiley_editor_set_image(editor, image->pixbuf);
      pidgin_smiley_editor_set_data(editor, save->data, save->datasize);
}

/*
 * So, um, AIM Direct IM lets you send any file, not just images.  You can
 * just insert a sound or a file or whatever in a conversation.  It's
 * basically like file transfer, except there is an icon to open the file
 * embedded in the conversation.  Someone should make the Purple core handle
 * all of that.
 */
static gboolean gtk_imhtml_image_clicked(GtkWidget *w, GdkEvent *event, GtkIMHtmlImageSave *save)
{
      GdkEventButton *event_button = (GdkEventButton *) event;
      GtkIMHtmlImage *image = (GtkIMHtmlImage *)save->image;

      if (event->type == GDK_BUTTON_RELEASE) {
            if(event_button->button == 3) {
                  GtkWidget *img, *item, *menu;
                  menu = gtk_menu_new();

                  /* buttons and such */
                  img = gtk_image_new_from_stock(GTK_STOCK_SAVE, GTK_ICON_SIZE_MENU);
                  item = gtk_image_menu_item_new_with_mnemonic(_("_Save Image..."));
                  gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item), img);
                  g_signal_connect(G_OBJECT(item), "activate", G_CALLBACK(gtk_imhtml_image_save), save);
                  gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);

                  /* Add menu item for adding custom smiley to local smileys */
                  /* we only add the menu if the image is of "custom smiley size"
                    <= 96x96 pixels */
                  if (image->width <= 96 && image->height <= 96) {
                        img = gtk_image_new_from_stock(GTK_STOCK_ADD, GTK_ICON_SIZE_MENU);
                        item = gtk_image_menu_item_new_with_mnemonic(_("_Add Custom Smiley..."));
                        gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item), img);
                        g_signal_connect(G_OBJECT(item), "activate",
                                                 G_CALLBACK(gtk_imhtml_custom_smiley_save), save);
                        gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
                  }

                  gtk_widget_show_all(menu);
                  gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL,
                                          event_button->button, event_button->time);

                  return TRUE;
            }
      }
      if(event->type == GDK_BUTTON_PRESS && event_button->button == 3)
            return TRUE; /* Clicking the right mouse button on a link shouldn't
                                    be caught by the regular GtkTextView menu */
      else
            return FALSE; /* Let clicks go through if we didn't catch anything */

}

static gboolean gtk_imhtml_smiley_clicked(GtkWidget *w, GdkEvent *event, GtkIMHtmlSmiley *smiley)
{
      GdkPixbufAnimation *anim = NULL;
      GtkIMHtmlImageSave *save = NULL;
      gboolean ret;

      if (event->type != GDK_BUTTON_RELEASE || ((GdkEventButton*)event)->button != 3)
            return FALSE;

      anim = gtk_smiley_get_image(smiley);
      if (!anim)
            return FALSE;

      save = g_new0(GtkIMHtmlImageSave, 1);
      save->image = (GtkIMHtmlScalable *)gtk_imhtml_animation_new(anim, smiley->smile, 0);
      save->data = smiley->data;        /* Do not need to memdup here, since the smiley is not
                                           destroyed before this GtkIMHtmlImageSave */
      save->datasize = smiley->datasize;
      ret = gtk_imhtml_image_clicked(w, event, save);
      g_object_set_data_full(G_OBJECT(w), "image-data", save->image, (GDestroyNotify)gtk_imhtml_animation_free);
      g_object_set_data_full(G_OBJECT(w), "image-save-data", save, (GDestroyNotify)g_free);
      return ret;
}

03993 void gtk_imhtml_image_free(GtkIMHtmlScalable *scale)
{
      GtkIMHtmlImage *image = (GtkIMHtmlImage *)scale;

      g_object_unref(image->pixbuf);
      g_free(image->filename);
      if (image->filesel)
            gtk_widget_destroy(image->filesel);
      g_free(scale);
}

04004 void gtk_imhtml_animation_free(GtkIMHtmlScalable *scale)
{
      GtkIMHtmlAnimation *animation = (GtkIMHtmlAnimation *)scale;

      if (animation->timer > 0)
            g_source_remove(animation->timer);
      if (animation->iter != NULL)
            g_object_unref(animation->iter);
      g_object_unref(animation->anim);

      gtk_imhtml_image_free(scale);
}

04017 void gtk_imhtml_image_add_to(GtkIMHtmlScalable *scale, GtkIMHtml *imhtml, GtkTextIter *iter)
{
      GtkIMHtmlImage *image = (GtkIMHtmlImage *)scale;
      GtkWidget *box = gtk_event_box_new();
      char *tag;
      GtkTextChildAnchor *anchor = gtk_text_buffer_create_child_anchor(imhtml->text_buffer, iter);
      GtkIMHtmlImageSave *save;

      gtk_container_add(GTK_CONTAINER(box), GTK_WIDGET(image->image));

      if(!gtk_check_version(2, 4, 0))
            g_object_set(G_OBJECT(box), "visible-window", FALSE, NULL);

      gtk_widget_show(GTK_WIDGET(image->image));
      gtk_widget_show(box);

      tag = g_strdup_printf("<IMG ID=\"%d\">", image->id);
      g_object_set_data_full(G_OBJECT(anchor), "gtkimhtml_htmltext", tag, g_free);
      g_object_set_data(G_OBJECT(anchor), "gtkimhtml_plaintext", "[Image]");

      gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(imhtml), box, anchor);

      save = g_new0(GtkIMHtmlImageSave, 1);
      save->image = scale;
      g_signal_connect(G_OBJECT(box), "event", G_CALLBACK(gtk_imhtml_image_clicked), save);
      g_object_set_data_full(G_OBJECT(box), "image-save-data", save, (GDestroyNotify)g_free);
}

04045 GtkIMHtmlScalable *gtk_imhtml_hr_new()
{
      GtkIMHtmlHr *hr = g_malloc(sizeof(GtkIMHtmlHr));

      GTK_IMHTML_SCALABLE(hr)->scale = gtk_imhtml_hr_scale;
      GTK_IMHTML_SCALABLE(hr)->add_to = gtk_imhtml_hr_add_to;
      GTK_IMHTML_SCALABLE(hr)->free = gtk_imhtml_hr_free;

      hr->sep = gtk_hseparator_new();
      gtk_widget_set_size_request(hr->sep, 5000, 2);
      gtk_widget_show(hr->sep);

      return GTK_IMHTML_SCALABLE(hr);
}

04060 void gtk_imhtml_hr_scale(GtkIMHtmlScalable *scale, int width, int height)
{
      gtk_widget_set_size_request(((GtkIMHtmlHr *)scale)->sep, width - 2, 2);
}

04065 void gtk_imhtml_hr_add_to(GtkIMHtmlScalable *scale, GtkIMHtml *imhtml, GtkTextIter *iter)
{
      GtkIMHtmlHr *hr = (GtkIMHtmlHr *)scale;
      GtkTextChildAnchor *anchor = gtk_text_buffer_create_child_anchor(imhtml->text_buffer, iter);
      g_object_set_data(G_OBJECT(anchor), "gtkimhtml_htmltext", "<hr>");
      g_object_set_data(G_OBJECT(anchor), "gtkimhtml_plaintext", "\n---\n");
      gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(imhtml), hr->sep, anchor);
}

04074 void gtk_imhtml_hr_free(GtkIMHtmlScalable *scale)
{
      g_free(scale);
}

04079 gboolean gtk_imhtml_search_find(GtkIMHtml *imhtml, const gchar *text)
{
      GtkTextIter iter, start, end;
      gboolean new_search = TRUE;
      GtkTextMark *start_mark;

      g_return_val_if_fail(imhtml != NULL, FALSE);
      g_return_val_if_fail(text != NULL, FALSE);

      start_mark = gtk_text_buffer_get_mark(imhtml->text_buffer, "search");

      if (start_mark && imhtml->search_string && !strcmp(text, imhtml->search_string))
            new_search = FALSE;

      if (new_search) {
            gtk_imhtml_search_clear(imhtml);
            g_free(imhtml->search_string);
            imhtml->search_string = g_strdup(text);
            gtk_text_buffer_get_end_iter(imhtml->text_buffer, &iter);
      } else {
            gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &iter,
                                     start_mark);
      }

      if (gtk_source_iter_backward_search(&iter, imhtml->search_string,
                                         GTK_SOURCE_SEARCH_VISIBLE_ONLY | GTK_SOURCE_SEARCH_CASE_INSENSITIVE,
                                         &start, &end, NULL))
      {
            gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(imhtml), &start, 0, TRUE, 0, 0);
            gtk_text_buffer_create_mark(imhtml->text_buffer, "search", &start, FALSE);
            if (new_search)
            {
                  gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "search", &iter, &end);
                  do
                        gtk_text_buffer_apply_tag_by_name(imhtml->text_buffer, "search", &start, &end);
                  while (gtk_source_iter_backward_search(&start, imhtml->search_string,
                                                GTK_SOURCE_SEARCH_VISIBLE_ONLY |
                                                GTK_SOURCE_SEARCH_CASE_INSENSITIVE,
                                                &start, &end, NULL));
            }
            return TRUE;
      }
      else if (!new_search)
      {
            /* We hit the end, so start at the beginning again. */
            gtk_text_buffer_get_end_iter(imhtml->text_buffer, &iter);

            if (gtk_source_iter_backward_search(&iter, imhtml->search_string,
                                               GTK_SOURCE_SEARCH_VISIBLE_ONLY | GTK_SOURCE_SEARCH_CASE_INSENSITIVE,
                                               &start, &end, NULL))
            {
                  gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(imhtml), &start, 0, TRUE, 0, 0);
                  gtk_text_buffer_create_mark(imhtml->text_buffer, "search", &start, FALSE);

                  return TRUE;
            }

      }

      return FALSE;
}

04141 void gtk_imhtml_search_clear(GtkIMHtml *imhtml)
{
      GtkTextIter start, end;

      g_return_if_fail(imhtml != NULL);

      gtk_text_buffer_get_start_iter(imhtml->text_buffer, &start);
      gtk_text_buffer_get_end_iter(imhtml->text_buffer, &end);

      gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "search", &start, &end);
      g_free(imhtml->search_string);
      imhtml->search_string = NULL;
}

static GtkTextTag *find_font_forecolor_tag(GtkIMHtml *imhtml, gchar *color)
{
      gchar str[18];
      GtkTextTag *tag;

      g_snprintf(str, sizeof(str), "FORECOLOR %s", color);

      tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(imhtml->text_buffer), str);
      if (!tag) {
            GdkColor gcolor;
            if (!gdk_color_parse(color, &gcolor)) {
                  gchar tmp[8];
                  tmp[0] = '#';
                  strncpy(&tmp[1], color, 7);
                  tmp[7] = '\0';
                  if (!gdk_color_parse(tmp, &gcolor))
                        gdk_color_parse("black", &gcolor);
            }
            tag = gtk_text_buffer_create_tag(imhtml->text_buffer, str, "foreground-gdk", &gcolor, NULL);
      }

      return tag;
}

static GtkTextTag *find_font_backcolor_tag(GtkIMHtml *imhtml, gchar *color)
{
      gchar str[18];
      GtkTextTag *tag;

      g_snprintf(str, sizeof(str), "BACKCOLOR %s", color);

      tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(imhtml->text_buffer), str);
      if (!tag) {
            GdkColor gcolor;
            if (!gdk_color_parse(color, &gcolor)) {
                  gchar tmp[8];
                  tmp[0] = '#';
                  strncpy(&tmp[1], color, 7);
                  tmp[7] = '\0';
                  if (!gdk_color_parse(tmp, &gcolor))
                        gdk_color_parse("white", &gcolor);
            }
            tag = gtk_text_buffer_create_tag(imhtml->text_buffer, str, "background-gdk", &gcolor, NULL);
      }

      return tag;
}

static GtkTextTag *find_font_background_tag(GtkIMHtml *imhtml, gchar *color)
{
      gchar str[19];
      GtkTextTag *tag;

      g_snprintf(str, sizeof(str), "BACKGROUND %s", color);

      tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(imhtml->text_buffer), str);
      if (!tag)
            tag = gtk_text_buffer_create_tag(imhtml->text_buffer, str, NULL);

      return tag;
}

static GtkTextTag *find_font_face_tag(GtkIMHtml *imhtml, gchar *face)
{
      gchar str[256];
      GtkTextTag *tag;

      g_snprintf(str, sizeof(str), "FONT FACE %s", face);
      str[255] = '\0';

      tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(imhtml->text_buffer), str);
      if (!tag)
            tag = gtk_text_buffer_create_tag(imhtml->text_buffer, str, "family", face, NULL);

      return tag;
}

static GtkTextTag *find_font_size_tag(GtkIMHtml *imhtml, int size)
{
      gchar str[24];
      GtkTextTag *tag;

      g_snprintf(str, sizeof(str), "FONT SIZE %d", size);
      str[23] = '\0';

      tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(imhtml->text_buffer), str);
      if (!tag) {
            /* For reasons I don't understand, setting "scale" here scaled
             * based on some default size other than my theme's default
             * size. Our size 4 was actually smaller than our size 3 for
             * me. So this works around that oddity.
             */
            GtkTextAttributes *attr = gtk_text_view_get_default_attributes(GTK_TEXT_VIEW(imhtml));
            tag = gtk_text_buffer_create_tag(imhtml->text_buffer, str, "size",
                                             (gint) (pango_font_description_get_size(attr->font) *
                                             (double) POINT_SIZE(size)), NULL);
            gtk_text_attributes_unref(attr);
      }

      return tag;
}

static void remove_tag_by_prefix(GtkIMHtml *imhtml, const GtkTextIter *i, const GtkTextIter *e,
                                 const char *prefix, guint len, gboolean homo)
{
      GSList *tags, *l;
      GtkTextIter iter;

      tags = gtk_text_iter_get_tags(i);

      for (l = tags; l; l = l->next) {
            GtkTextTag *tag = l->data;

            if (tag->name && !strncmp(tag->name, prefix, len))
                  gtk_text_buffer_remove_tag(imhtml->text_buffer, tag, i, e);
      }

      g_slist_free(tags);

      if (homo)
            return;

      iter = *i;

      while (gtk_text_iter_forward_char(&iter) && !gtk_text_iter_equal(&iter, e)) {
            if (gtk_text_iter_begins_tag(&iter, NULL)) {
                  tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);

                  for (l = tags; l; l = l->next) {
                        GtkTextTag *tag = l->data;

                        if (tag->name && !strncmp(tag->name, prefix, len))
                              gtk_text_buffer_remove_tag(imhtml->text_buffer, tag, &iter, e);
                  }

                  g_slist_free(tags);
            }
      }
}

static void remove_font_size(GtkIMHtml *imhtml, GtkTextIter *i, GtkTextIter *e, gboolean homo)
{
      remove_tag_by_prefix(imhtml, i, e, "FONT SIZE ", 10, homo);
}

static void remove_font_face(GtkIMHtml *imhtml, GtkTextIter *i, GtkTextIter *e, gboolean homo)
{
      remove_tag_by_prefix(imhtml, i, e, "FONT FACE ", 10, homo);
}

static void remove_font_forecolor(GtkIMHtml *imhtml, GtkTextIter *i, GtkTextIter *e, gboolean homo)
{
      remove_tag_by_prefix(imhtml, i, e, "FORECOLOR ", 10, homo);
}

static void remove_font_backcolor(GtkIMHtml *imhtml, GtkTextIter *i, GtkTextIter *e, gboolean homo)
{
      remove_tag_by_prefix(imhtml, i, e, "BACKCOLOR ", 10, homo);
}

static void remove_font_background(GtkIMHtml *imhtml, GtkTextIter *i, GtkTextIter *e, gboolean homo)
{
      remove_tag_by_prefix(imhtml, i, e, "BACKGROUND ", 10, homo);
}

static void remove_font_link(GtkIMHtml *imhtml, GtkTextIter *i, GtkTextIter *e, gboolean homo)
{
      remove_tag_by_prefix(imhtml, i, e, "LINK ", 5, homo);
}

static void
imhtml_clear_formatting(GtkIMHtml *imhtml)
{
      GtkTextIter start, end;

      if (!imhtml->editable)
            return;

      if (!imhtml_get_iter_bounds(imhtml, &start, &end))
            return;

      gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "BOLD", &start, &end);
      gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "ITALICS", &start, &end);
      gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "UNDERLINE", &start, &end);
      gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "STRIKE", &start, &end);
      remove_font_size(imhtml, &start, &end, FALSE);
      remove_font_face(imhtml, &start, &end, FALSE);
      remove_font_forecolor(imhtml, &start, &end, FALSE);
      remove_font_backcolor(imhtml, &start, &end, FALSE);
      remove_font_background(imhtml, &start, &end, FALSE);
      remove_font_link(imhtml, &start, &end, FALSE);

      imhtml->edit.bold = 0;
      imhtml->edit.italic = 0;
      imhtml->edit.underline = 0;
      imhtml->edit.strike = 0;
      imhtml->edit.fontsize = 0;

      g_free(imhtml->edit.fontface);
      imhtml->edit.fontface = NULL;

      g_free(imhtml->edit.forecolor);
      imhtml->edit.forecolor = NULL;

      g_free(imhtml->edit.backcolor);
      imhtml->edit.backcolor = NULL;

      g_free(imhtml->edit.background);
      imhtml->edit.background = NULL;
}

/* Editable stuff */
static void preinsert_cb(GtkTextBuffer *buffer, GtkTextIter *iter, gchar *text, gint len, GtkIMHtml *imhtml)
{
      imhtml->insert_offset = gtk_text_iter_get_offset(iter);
}

static void insert_ca_cb(GtkTextBuffer *buffer, GtkTextIter *arg1, GtkTextChildAnchor *arg2, gpointer user_data)
{
      GtkTextIter start;

      start = *arg1;
      gtk_text_iter_backward_char(&start);

      gtk_imhtml_apply_tags_on_insert(user_data, &start, arg1);
}

static void insert_cb(GtkTextBuffer *buffer, GtkTextIter *end, gchar *text, gint len, GtkIMHtml *imhtml)
{
      GtkTextIter start;

      if (!len)
            return;

      start = *end;
      gtk_text_iter_set_offset(&start, imhtml->insert_offset);

      gtk_imhtml_apply_tags_on_insert(imhtml, &start, end);
}

static void delete_cb(GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end, GtkIMHtml *imhtml)
{
      GSList *tags, *l;

      tags = gtk_text_iter_get_tags(start);
      for (l = tags; l != NULL; l = l->next) {
            GtkTextTag *tag = GTK_TEXT_TAG(l->data);

            if (tag &&                                      /* Remove the formatting only if */
                        gtk_text_iter_starts_word(start) &&                   /* beginning of a word */
                        gtk_text_iter_begins_tag(start, tag) &&               /* the tag starts with the selection */
                        (!gtk_text_iter_has_tag(end, tag) ||                  /* the tag ends within the selection */
                              gtk_text_iter_ends_tag(end, tag))) {
                  gtk_text_buffer_remove_tag(imhtml->text_buffer, tag, start, end);
                  if (tag->name &&
                              strncmp(tag->name, "LINK ", 5) == 0 && imhtml->edit.link) {
                        gtk_imhtml_toggle_link(imhtml, NULL);
                  }
            }
      }
      g_slist_free(tags);
}

static void gtk_imhtml_apply_tags_on_insert(GtkIMHtml *imhtml, GtkTextIter *start, GtkTextIter *end)
{
      if (imhtml->edit.bold)
            gtk_text_buffer_apply_tag_by_name(imhtml->text_buffer, "BOLD", start, end);
      else
            gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "BOLD", start, end);

      if (imhtml->edit.italic)
            gtk_text_buffer_apply_tag_by_name(imhtml->text_buffer, "ITALICS", start, end);
      else
            gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "ITALICS", start, end);

      if (imhtml->edit.underline)
            gtk_text_buffer_apply_tag_by_name(imhtml->text_buffer, "UNDERLINE", start, end);
      else
            gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "UNDERLINE", start, end);

      if (imhtml->edit.strike)
            gtk_text_buffer_apply_tag_by_name(imhtml->text_buffer, "STRIKE", start, end);
      else
            gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "STRIKE", start, end);

      if (imhtml->edit.forecolor) {
            remove_font_forecolor(imhtml, start, end, TRUE);
            gtk_text_buffer_apply_tag(imhtml->text_buffer,
                                      find_font_forecolor_tag(imhtml, imhtml->edit.forecolor),
                                      start, end);
      }

      if (imhtml->edit.backcolor) {
            remove_font_backcolor(imhtml, start, end, TRUE);
            gtk_text_buffer_apply_tag(imhtml->text_buffer,
                                      find_font_backcolor_tag(imhtml, imhtml->edit.backcolor),
                                      start, end);
      }

      if (imhtml->edit.background) {
            remove_font_background(imhtml, start, end, TRUE);
            gtk_text_buffer_apply_tag(imhtml->text_buffer,
                                      find_font_background_tag(imhtml, imhtml->edit.background),
                                      start, end);
      }
      if (imhtml->edit.fontface) {
            remove_font_face(imhtml, start, end, TRUE);
            gtk_text_buffer_apply_tag(imhtml->text_buffer,
                                      find_font_face_tag(imhtml, imhtml->edit.fontface),
                                      start, end);
      }

      if (imhtml->edit.fontsize) {
            remove_font_size(imhtml, start, end, TRUE);
            gtk_text_buffer_apply_tag(imhtml->text_buffer,
                                      find_font_size_tag(imhtml, imhtml->edit.fontsize),
                                      start, end);
      }

      if (imhtml->edit.link) {
            remove_font_link(imhtml, start, end, TRUE);
            gtk_text_buffer_apply_tag(imhtml->text_buffer,
                                      imhtml->edit.link,
                                      start, end);
      }
}

04482 void gtk_imhtml_set_editable(GtkIMHtml *imhtml, gboolean editable)
{
      gtk_text_view_set_editable(GTK_TEXT_VIEW(imhtml), editable);
      /*
       * We need a visible caret for accessibility, so mouseless
       * people can highlight stuff.
       */
      /* gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(imhtml), editable); */
      if (editable && !imhtml->editable) {
            g_signal_connect_after(G_OBJECT(GTK_IMHTML(imhtml)->text_buffer), "mark-set",
                        G_CALLBACK(mark_set_cb), imhtml);
            g_signal_connect(G_OBJECT(imhtml), "backspace", G_CALLBACK(smart_backspace_cb), NULL);
      } else if (!editable && imhtml->editable) {
            g_signal_handlers_disconnect_by_func(G_OBJECT(GTK_IMHTML(imhtml)->text_buffer),
                  mark_set_cb, imhtml);
            g_signal_handlers_disconnect_by_func(G_OBJECT(imhtml),
                  smart_backspace_cb, NULL);
      }

      imhtml->editable = editable;
      imhtml->format_functions = GTK_IMHTML_ALL;
}

04505 void gtk_imhtml_set_whole_buffer_formatting_only(GtkIMHtml *imhtml, gboolean wbfo)
{
      g_return_if_fail(imhtml != NULL);

      imhtml->wbfo = wbfo;
}

04512 void gtk_imhtml_set_format_functions(GtkIMHtml *imhtml, GtkIMHtmlButtons buttons)
{
      GObject *object = g_object_ref(G_OBJECT(imhtml));
      imhtml->format_functions = buttons;
      g_signal_emit(object, signals[BUTTONS_UPDATE], 0, buttons);
      g_object_unref(object);
}

04520 GtkIMHtmlButtons gtk_imhtml_get_format_functions(GtkIMHtml *imhtml)
{
      return imhtml->format_functions;
}

04525 void gtk_imhtml_get_current_format(GtkIMHtml *imhtml, gboolean *bold,
                                                   gboolean *italic, gboolean *underline)
{
      if (bold != NULL)
            (*bold) = imhtml->edit.bold;
      if (italic != NULL)
            (*italic) = imhtml->edit.italic;
      if (underline != NULL)
            (*underline) = imhtml->edit.underline;
}

char *
04537 gtk_imhtml_get_current_fontface(GtkIMHtml *imhtml)
{
      return g_strdup(imhtml->edit.fontface);
}

char *
04543 gtk_imhtml_get_current_forecolor(GtkIMHtml *imhtml)
{
      return g_strdup(imhtml->edit.forecolor);
}

char *
04549 gtk_imhtml_get_current_backcolor(GtkIMHtml *imhtml)
{
      return g_strdup(imhtml->edit.backcolor);
}

char *
04555 gtk_imhtml_get_current_background(GtkIMHtml *imhtml)
{
      return g_strdup(imhtml->edit.background);
}

gint
04561 gtk_imhtml_get_current_fontsize(GtkIMHtml *imhtml)
{
      return imhtml->edit.fontsize;
}

04566 gboolean gtk_imhtml_get_editable(GtkIMHtml *imhtml)
{
      return imhtml->editable;
}

void
04572 gtk_imhtml_clear_formatting(GtkIMHtml *imhtml)
{
      GObject *object;

      object = g_object_ref(G_OBJECT(imhtml));
      g_signal_emit(object, signals[CLEAR_FORMAT], 0);

      gtk_widget_grab_focus(GTK_WIDGET(imhtml));

      g_object_unref(object);
}

/*
 * I had this crazy idea about changing the text cursor color to reflex the foreground color
 * of the text about to be entered. This is the place you'd do it, along with the place where
 * we actually set a new foreground color.
 * I may not do this, because people will bitch about Purple overriding their gtk theme's cursor
 * colors.
 *
 * Just in case I do do this, I asked about what to set the secondary text cursor to.
 *
 * (12:45:27) ?? ???: secondary_cursor_color = (rgb(background) + rgb(primary_cursor_color) ) / 2
 * (12:45:55) ?? ???: understand?
 * (12:46:14) Tim: yeah. i didn't know there was an exact formula
 * (12:46:56) ?? ???: u might need to extract separate each color from RGB
 */

static void mark_set_cb(GtkTextBuffer *buffer, GtkTextIter *arg1, GtkTextMark *mark,
                           GtkIMHtml *imhtml)
{
      GSList *tags, *l;
      GtkTextIter iter;

      if (mark != gtk_text_buffer_get_insert(buffer))
            return;

      if (!gtk_text_buffer_get_char_count(buffer))
            return;

      imhtml->edit.bold = imhtml->edit.italic = imhtml->edit.underline = imhtml->edit.strike = FALSE;
      g_free(imhtml->edit.forecolor);
      imhtml->edit.forecolor = NULL;

      g_free(imhtml->edit.backcolor);
      imhtml->edit.backcolor = NULL;

      g_free(imhtml->edit.fontface);
      imhtml->edit.fontface = NULL;

      imhtml->edit.fontsize = 0;
      imhtml->edit.link = NULL;

      gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &iter, mark);


      if (gtk_text_iter_is_end(&iter))
            tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
      else
            tags = gtk_text_iter_get_tags(&iter);

      for (l = tags; l != NULL; l = l->next) {
            GtkTextTag *tag = GTK_TEXT_TAG(l->data);

            if (tag->name) {
                  if (strcmp(tag->name, "BOLD") == 0)
                        imhtml->edit.bold = TRUE;
                  else if (strcmp(tag->name, "ITALICS") == 0)
                        imhtml->edit.italic = TRUE;
                  else if (strcmp(tag->name, "UNDERLINE") == 0)
                        imhtml->edit.underline = TRUE;
                  else if (strcmp(tag->name, "STRIKE") == 0)
                        imhtml->edit.strike = TRUE;
                  else if (strncmp(tag->name, "FORECOLOR ", 10) == 0)
                        imhtml->edit.forecolor = g_strdup(&(tag->name)[10]);
                  else if (strncmp(tag->name, "BACKCOLOR ", 10) == 0)
                        imhtml->edit.backcolor = g_strdup(&(tag->name)[10]);
                  else if (strncmp(tag->name, "FONT FACE ", 10) == 0)
                        imhtml->edit.fontface = g_strdup(&(tag->name)[10]);
                  else if (strncmp(tag->name, "FONT SIZE ", 10) == 0)
                        imhtml->edit.fontsize = strtol(&(tag->name)[10], NULL, 10);
                  else if ((strncmp(tag->name, "LINK ", 5) == 0) && !gtk_text_iter_is_end(&iter))
                        imhtml->edit.link = tag;
            }
      }

      g_slist_free(tags);
}

static void imhtml_emit_signal_for_format(GtkIMHtml *imhtml, GtkIMHtmlButtons button)
{
      GObject *object;

      g_return_if_fail(imhtml != NULL);

      object = g_object_ref(G_OBJECT(imhtml));
      g_signal_emit(object, signals[TOGGLE_FORMAT], 0, button);
      g_object_unref(object);
}

static void imhtml_toggle_bold(GtkIMHtml *imhtml)
{
      GtkTextIter start, end;

      imhtml->edit.bold = !imhtml->edit.bold;

      if (!imhtml_get_iter_bounds(imhtml, &start, &end))
            return;

      if (imhtml->edit.bold)
            gtk_text_buffer_apply_tag_by_name(imhtml->text_buffer, "BOLD", &start, &end);
      else
            gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "BOLD", &start, &end);
}

04686 void gtk_imhtml_toggle_bold(GtkIMHtml *imhtml)
{
      imhtml_emit_signal_for_format(imhtml, GTK_IMHTML_BOLD);
}

static void imhtml_toggle_italic(GtkIMHtml *imhtml)
{
      GtkTextIter start, end;

      imhtml->edit.italic = !imhtml->edit.italic;

      if (!imhtml_get_iter_bounds(imhtml, &start, &end))
            return;

      if (imhtml->edit.italic)
            gtk_text_buffer_apply_tag_by_name(imhtml->text_buffer, "ITALICS", &start, &end);
      else
            gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "ITALICS", &start, &end);
}

04706 void gtk_imhtml_toggle_italic(GtkIMHtml *imhtml)
{
      imhtml_emit_signal_for_format(imhtml, GTK_IMHTML_ITALIC);
}

static void imhtml_toggle_underline(GtkIMHtml *imhtml)
{
      GtkTextIter start, end;

      imhtml->edit.underline = !imhtml->edit.underline;

      if (!imhtml_get_iter_bounds(imhtml, &start, &end))
            return;

      if (imhtml->edit.underline)
            gtk_text_buffer_apply_tag_by_name(imhtml->text_buffer, "UNDERLINE", &start, &end);
      else
            gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "UNDERLINE", &start, &end);
}

04726 void gtk_imhtml_toggle_underline(GtkIMHtml *imhtml)
{
      imhtml_emit_signal_for_format(imhtml, GTK_IMHTML_UNDERLINE);
}

static void imhtml_toggle_strike(GtkIMHtml *imhtml)
{
      GtkTextIter start, end;

      imhtml->edit.strike = !imhtml->edit.strike;

      if (!imhtml_get_iter_bounds(imhtml, &start, &end))
            return;

      if (imhtml->edit.strike)
            gtk_text_buffer_apply_tag_by_name(imhtml->text_buffer, "STRIKE", &start, &end);
      else
            gtk_text_buffer_remove_tag_by_name(imhtml->text_buffer, "STRIKE", &start, &end);
}

04746 void gtk_imhtml_toggle_strike(GtkIMHtml *imhtml)
{
      imhtml_emit_signal_for_format(imhtml, GTK_IMHTML_STRIKE);
}

04751 void gtk_imhtml_font_set_size(GtkIMHtml *imhtml, gint size)
{
      GObject *object;
      GtkTextIter start, end;

      imhtml->edit.fontsize = size;

      if (!imhtml_get_iter_bounds(imhtml, &start, &end))
            return;

      remove_font_size(imhtml, &start, &end, imhtml->wbfo);
      gtk_text_buffer_apply_tag(imhtml->text_buffer,
                  find_font_size_tag(imhtml, imhtml->edit.fontsize), &start, &end);

      object = g_object_ref(G_OBJECT(imhtml));
      g_signal_emit(object, signals[TOGGLE_FORMAT], 0, GTK_IMHTML_SHRINK | GTK_IMHTML_GROW);
      g_object_unref(object);
}

static void imhtml_font_shrink(GtkIMHtml *imhtml)
{
      GtkTextIter start, end;

      if (imhtml->edit.fontsize == 1)
            return;

      if (!imhtml->edit.fontsize)
            imhtml->edit.fontsize = 2;
      else
            imhtml->edit.fontsize--;

      if (!imhtml_get_iter_bounds(imhtml, &start, &end))
            return;
      remove_font_size(imhtml, &start, &end, imhtml->wbfo);
      gtk_text_buffer_apply_tag(imhtml->text_buffer,
                                              find_font_size_tag(imhtml, imhtml->edit.fontsize), &start, &end);
}

04789 void gtk_imhtml_font_shrink(GtkIMHtml *imhtml)
{
      imhtml_emit_signal_for_format(imhtml, GTK_IMHTML_SHRINK);
}

static void imhtml_font_grow(GtkIMHtml *imhtml)
{
      GtkTextIter start, end;

      if (imhtml->edit.fontsize == MAX_FONT_SIZE)
            return;

      if (!imhtml->edit.fontsize)
            imhtml->edit.fontsize = 4;
      else
            imhtml->edit.fontsize++;

      if (!imhtml_get_iter_bounds(imhtml, &start, &end))
            return;
      remove_font_size(imhtml, &start, &end, imhtml->wbfo);
      gtk_text_buffer_apply_tag(imhtml->text_buffer,
                  find_font_size_tag(imhtml, imhtml->edit.fontsize), &start, &end);
}

04813 void gtk_imhtml_font_grow(GtkIMHtml *imhtml)
{
      imhtml_emit_signal_for_format(imhtml, GTK_IMHTML_GROW);
}

static gboolean gtk_imhtml_toggle_str_tag(GtkIMHtml *imhtml, const char *value, char **edit_field,
                        void (*remove_func)(GtkIMHtml *imhtml, GtkTextIter *i, GtkTextIter *e, gboolean homo),
                        GtkTextTag *(find_func)(GtkIMHtml *imhtml, gchar *color), GtkIMHtmlButtons button)
{
      GObject *object;
      GtkTextIter start;
      GtkTextIter end;

      g_free(*edit_field);
      *edit_field = NULL;

      if (value && strcmp(value, "") != 0)
      {
            *edit_field = g_strdup(value);

            if (imhtml_get_iter_bounds(imhtml, &start, &end)) {
                  remove_func(imhtml, &start, &end, imhtml->wbfo);
                  gtk_text_buffer_apply_tag(imhtml->text_buffer,
                              find_func(imhtml, *edit_field), &start, &end);
            }
      }
      else
      {
            if (imhtml_get_iter_bounds(imhtml, &start, &end))
                  remove_func(imhtml, &start, &end, TRUE);  /* 'TRUE' or 'imhtml->wbfo'? */
      }

      object = g_object_ref(G_OBJECT(imhtml));
      g_signal_emit(object, signals[TOGGLE_FORMAT], 0, button);
      g_object_unref(object);

      return *edit_field != NULL;
}

04852 gboolean gtk_imhtml_toggle_forecolor(GtkIMHtml *imhtml, const char *color)
{
      return gtk_imhtml_toggle_str_tag(imhtml, color, &imhtml->edit.forecolor,
                                       remove_font_forecolor, find_font_forecolor_tag,
                                       GTK_IMHTML_FORECOLOR);
}

04859 gboolean gtk_imhtml_toggle_backcolor(GtkIMHtml *imhtml, const char *color)
{
      return gtk_imhtml_toggle_str_tag(imhtml, color, &imhtml->edit.backcolor,
                                       remove_font_backcolor, find_font_backcolor_tag,
                                       GTK_IMHTML_BACKCOLOR);
}

04866 gboolean gtk_imhtml_toggle_background(GtkIMHtml *imhtml, const char *color)
{
      return gtk_imhtml_toggle_str_tag(imhtml, color, &imhtml->edit.background,
                                       remove_font_background, find_font_background_tag,
                                       GTK_IMHTML_BACKGROUND);
}

04873 gboolean gtk_imhtml_toggle_fontface(GtkIMHtml *imhtml, const char *face)
{
      return gtk_imhtml_toggle_str_tag(imhtml, face, &imhtml->edit.fontface,
                                       remove_font_face, find_font_face_tag,
                                       GTK_IMHTML_FACE);
}

04880 void gtk_imhtml_toggle_link(GtkIMHtml *imhtml, const char *url)
{
      GObject *object;
      GtkTextIter start, end;
      GtkTextTag *linktag;
      static guint linkno = 0;
      gchar str[48];
      GdkColor *color = NULL;

      imhtml->edit.link = NULL;

      if (url) {
            g_snprintf(str, sizeof(str), "LINK %d", linkno++);
            str[47] = '\0';

            gtk_widget_style_get(GTK_WIDGET(imhtml), "hyperlink-color", &color, NULL);
            if (color) {
                  imhtml->edit.link = linktag = gtk_text_buffer_create_tag(imhtml->text_buffer, str, "foreground-gdk", color, "underline", PANGO_UNDERLINE_SINGLE, NULL);
                  gdk_color_free(color);
            } else {
                  imhtml->edit.link = linktag = gtk_text_buffer_create_tag(imhtml->text_buffer, str, "foreground", "blue", "underline", PANGO_UNDERLINE_SINGLE, NULL);
            }
            g_object_set_data_full(G_OBJECT(linktag), "link_url", g_strdup(url), g_free);
            g_signal_connect(G_OBJECT(linktag), "event", G_CALLBACK(tag_event), NULL);

            if (imhtml->editable && gtk_text_buffer_get_selection_bounds(imhtml->text_buffer, &start, &end)) {
                  remove_font_link(imhtml, &start, &end, FALSE);
                  gtk_text_buffer_apply_tag(imhtml->text_buffer, linktag, &start, &end);
            }
      }

      object = g_object_ref(G_OBJECT(imhtml));
      g_signal_emit(object, signals[TOGGLE_FORMAT], 0, GTK_IMHTML_LINK);
      g_object_unref(object);
}

04916 void gtk_imhtml_insert_link(GtkIMHtml *imhtml, GtkTextMark *mark, const char *url, const char *text)
{
      GtkTextIter iter;

      /* Delete any currently selected text */
      gtk_text_buffer_delete_selection(imhtml->text_buffer, TRUE, TRUE);

      gtk_imhtml_toggle_link(imhtml, url);
      gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &iter, mark);
      gtk_text_buffer_insert(imhtml->text_buffer, &iter, text, -1);
      gtk_imhtml_toggle_link(imhtml, NULL);
}

04929 void gtk_imhtml_insert_smiley(GtkIMHtml *imhtml, const char *sml, char *smiley)
{
      GtkTextMark *mark;
      GtkTextIter iter;

      /* Delete any currently selected text */
      gtk_text_buffer_delete_selection(imhtml->text_buffer, TRUE, TRUE);

      mark = gtk_text_buffer_get_insert(imhtml->text_buffer);

      gtk_text_buffer_get_iter_at_mark(imhtml->text_buffer, &iter, mark);
      gtk_text_buffer_begin_user_action(imhtml->text_buffer);
      gtk_imhtml_insert_smiley_at_iter(imhtml, sml, smiley, &iter);
      gtk_text_buffer_end_user_action(imhtml->text_buffer);
}

static gboolean
image_expose(GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
{
      GTK_WIDGET_CLASS(GTK_WIDGET_GET_CLASS(widget))->expose_event(widget, event);

      return TRUE;
}

/* In case the smiley gets removed from the imhtml before it gets removed from the queue */
static void animated_smiley_destroy_cb(GtkObject *widget, GtkIMHtml *imhtml)
{
      GList *l = imhtml->animations->head;
      while (l) {
            GList *next = l->next;
            if (l->data == widget) {
                  if (l == imhtml->animations->tail)
                        imhtml->animations->tail = imhtml->animations->tail->prev;
                  imhtml->animations->head = g_list_delete_link(imhtml->animations->head, l);
                  imhtml->num_animations--;
            }
            l = next;
      }
}

04969 void gtk_imhtml_insert_smiley_at_iter(GtkIMHtml *imhtml, const char *sml, char *smiley, GtkTextIter *iter)
{
      GdkPixbuf *pixbuf = NULL;
      GdkPixbufAnimation *annipixbuf = NULL;
      GtkWidget *icon = NULL;
      GtkTextChildAnchor *anchor = NULL;
      char *unescaped;
      GtkIMHtmlSmiley *imhtml_smiley;
      GtkWidget *ebox = NULL;
      int numsmileys_thismsg, numsmileys_total;

      /*
       * This GtkIMHtml has the maximum number of smileys allowed, so don't
       * add any more.  We do this for performance reasons, because smileys
       * are apparently pretty inefficient.  Hopefully we can remove this
       * restriction when we're using a better HTML widget.
       */
      numsmileys_thismsg = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(imhtml), "gtkimhtml_numsmileys_thismsg"));
      if (numsmileys_thismsg >= 30) {
            gtk_text_buffer_insert(imhtml->text_buffer, iter, smiley, -1);
            return;
      }
      numsmileys_total = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(imhtml), "gtkimhtml_numsmileys_total"));
      if (numsmileys_total >= 300) {
            gtk_text_buffer_insert(imhtml->text_buffer, iter, smiley, -1);
            return;
      }

      unescaped = purple_unescape_html(smiley);
      imhtml_smiley = gtk_imhtml_smiley_get(imhtml, sml, unescaped);

      if (imhtml->format_functions & GTK_IMHTML_SMILEY) {
            annipixbuf = imhtml_smiley ? gtk_smiley_get_image(imhtml_smiley) : NULL;
            if (annipixbuf) {
                  if (gdk_pixbuf_animation_is_static_image(annipixbuf)) {
                        pixbuf = gdk_pixbuf_animation_get_static_image(annipixbuf);
                        if (pixbuf)
                              icon = gtk_image_new_from_pixbuf(pixbuf);
                  } else {
                        icon = gtk_image_new_from_animation(annipixbuf);
                        if (imhtml->num_animations == 20) {
                              GtkImage *image = GTK_IMAGE(g_queue_pop_head(imhtml->animations));
                              GdkPixbufAnimation *anim = gtk_image_get_animation(image);
                              g_signal_handlers_disconnect_matched(G_OBJECT(image), G_SIGNAL_MATCH_FUNC,
                                           0, 0, NULL, G_CALLBACK(animated_smiley_destroy_cb), NULL);
                              if (anim) {
                                    GdkPixbuf *pb = gdk_pixbuf_animation_get_static_image(anim);
                                    if (pb != NULL) {
                                          GdkPixbuf *copy = gdk_pixbuf_copy(pb);
                                          gtk_image_set_from_pixbuf(image, copy);
                                          g_object_unref(G_OBJECT(copy));
                                    }
                              }
                        } else {
                              imhtml->num_animations++;
                        }
                        g_signal_connect(G_OBJECT(icon), "destroy", G_CALLBACK(animated_smiley_destroy_cb), imhtml);
                        g_queue_push_tail(imhtml->animations, icon);
                  }
            }
      }

      if (imhtml_smiley && imhtml_smiley->flags & GTK_IMHTML_SMILEY_CUSTOM) {
            ebox = gtk_event_box_new();
#if GTK_CHECK_VERSION(2,4,0)
            gtk_event_box_set_visible_window(GTK_EVENT_BOX(ebox), FALSE);
#endif
            gtk_widget_show(ebox);
      }

      if (icon) {
            anchor = gtk_text_buffer_create_child_anchor(imhtml->text_buffer, iter);
            g_object_set_data_full(G_OBJECT(anchor), "gtkimhtml_plaintext", g_strdup(unescaped), g_free);
            g_object_set_data_full(G_OBJECT(anchor), "gtkimhtml_tiptext", g_strdup(unescaped), g_free);
            g_object_set_data_full(G_OBJECT(anchor), "gtkimhtml_htmltext", g_strdup(smiley), g_free);

            /* This catches the expose events generated by animated
             * images, and ensures that they are handled by the image
             * itself, without propagating to the textview and causing
             * a complete refresh */
            g_signal_connect(G_OBJECT(icon), "expose-event", G_CALLBACK(image_expose), NULL);

            gtk_widget_show(icon);
            if (ebox)
                  gtk_container_add(GTK_CONTAINER(ebox), icon);
            gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(imhtml), ebox ? ebox : icon, anchor);

            g_object_set_data(G_OBJECT(imhtml), "gtkimhtml_numsmileys_thismsg", GINT_TO_POINTER(numsmileys_thismsg + 1));
            g_object_set_data(G_OBJECT(imhtml), "gtkimhtml_numsmileys_total", GINT_TO_POINTER(numsmileys_total + 1));
      } else if (imhtml_smiley != NULL && (imhtml->format_functions & GTK_IMHTML_SMILEY)) {
            anchor = gtk_text_buffer_create_child_anchor(imhtml->text_buffer, iter);
            imhtml_smiley->anchors = g_slist_append(imhtml_smiley->anchors, g_object_ref(anchor));
            if (ebox) {
                  GtkWidget *img = gtk_image_new_from_stock(GTK_STOCK_MISSING_IMAGE, GTK_ICON_SIZE_MENU);
                  gtk_container_add(GTK_CONTAINER(ebox), img);
                  gtk_widget_show(img);
                  g_object_set_data_full(G_OBJECT(anchor), "gtkimhtml_plaintext", g_strdup(unescaped), g_free);
                  g_object_set_data_full(G_OBJECT(anchor), "gtkimhtml_tiptext", g_strdup(unescaped), g_free);
                  g_object_set_data_full(G_OBJECT(anchor), "gtkimhtml_htmltext", g_strdup(smiley), g_free);
                  gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(imhtml), ebox, anchor);
            }

            g_object_set_data(G_OBJECT(imhtml), "gtkimhtml_numsmileys_thismsg", GINT_TO_POINTER(numsmileys_thismsg + 1));
            g_object_set_data(G_OBJECT(imhtml), "gtkimhtml_numsmileys_total", GINT_TO_POINTER(numsmileys_total + 1));
      } else {
            gtk_text_buffer_insert(imhtml->text_buffer, iter, smiley, -1);
      }

      if (ebox) {
            g_signal_connect(G_OBJECT(ebox), "event", G_CALLBACK(gtk_imhtml_smiley_clicked), imhtml_smiley);
      }

      g_free(unescaped);
}

05084 void gtk_imhtml_insert_image_at_iter(GtkIMHtml *imhtml, int id, GtkTextIter *iter)
{
      GdkPixbufAnimation *anim = NULL;
      const char *filename = NULL;
      gpointer image;
      GdkRectangle rect;
      GtkIMHtmlScalable *scalable = NULL;
      struct scalable_data *sd;
      int minus;

      if (!imhtml->funcs || !imhtml->funcs->image_get ||
          !imhtml->funcs->image_get_size || !imhtml->funcs->image_get_data ||
          !imhtml->funcs->image_get_filename || !imhtml->funcs->image_ref ||
          !imhtml->funcs->image_unref)
            return;

      image = imhtml->funcs->image_get(id);

      if (image) {
            gpointer data;
            size_t len;

            data = imhtml->funcs->image_get_data(image);
            len = imhtml->funcs->image_get_size(image);

            if (data && len) {
                  GdkPixbufLoader *loader = gdk_pixbuf_loader_new();
                  gdk_pixbuf_loader_write(loader, data, len, NULL);
                  gdk_pixbuf_loader_close(loader, NULL);
                  anim = gdk_pixbuf_loader_get_animation(loader);
                  if (anim)
                        g_object_ref(G_OBJECT(anim));
                  g_object_unref(G_OBJECT(loader));
            }

      }

      if (anim) {
            struct im_image_data *t = g_new(struct im_image_data, 1);
            filename = imhtml->funcs->image_get_filename(image);
            imhtml->funcs->image_ref(id);
            t->id = id;
            t->mark = gtk_text_buffer_create_mark(imhtml->text_buffer, NULL, iter, TRUE);
            imhtml->im_images = g_slist_prepend(imhtml->im_images, t);
            scalable = gtk_imhtml_animation_new(anim, filename, id);
            g_object_unref(G_OBJECT(anim));
      } else {
            GdkPixbuf *pixbuf;
            pixbuf = gtk_widget_render_icon(GTK_WIDGET(imhtml), GTK_STOCK_MISSING_IMAGE,
                                    GTK_ICON_SIZE_BUTTON, "gtkimhtml-missing-image");
            scalable = gtk_imhtml_image_new(pixbuf, filename, id);
            g_object_unref(G_OBJECT(pixbuf));
      }

      sd = g_new(struct scalable_data, 1);
      sd->scalable = scalable;
      sd->mark = gtk_text_buffer_create_mark(imhtml->text_buffer, NULL, iter, TRUE);
      gtk_text_view_get_visible_rect(GTK_TEXT_VIEW(imhtml), &rect);
      scalable->add_to(scalable, imhtml, iter);
      minus = gtk_text_view_get_left_margin(GTK_TEXT_VIEW(imhtml)) +
            gtk_text_view_get_right_margin(GTK_TEXT_VIEW(imhtml));
      scalable->scale(scalable, rect.width - minus, rect.height);
      imhtml->scalables = g_list_append(imhtml->scalables, sd);
}

static const gchar *tag_to_html_start(GtkTextTag *tag)
{
      const gchar *name;
      static gchar buf[1024];

      name = tag->name;
      g_return_val_if_fail(name != NULL, "");

      if (strcmp(name, "BOLD") == 0) {
            return "<b>";
      } else if (strcmp(name, "ITALICS") == 0) {
            return "<i>";
      } else if (strcmp(name, "UNDERLINE") == 0) {
            return "<u>";
      } else if (strcmp(name, "STRIKE") == 0) {
            return "<s>";
      } else if (strncmp(name, "LINK ", 5) == 0) {
            char *tmp = g_object_get_data(G_OBJECT(tag), "link_url");
            if (tmp) {
                  g_snprintf(buf, sizeof(buf), "<a href=\"%s\">", tmp);
                  buf[sizeof(buf)-1] = '\0';
                  return buf;
            } else {
                  return "";
            }
      } else if (strncmp(name, "FORECOLOR ", 10) == 0) {
            g_snprintf(buf, sizeof(buf), "<font color=\"%s\">", &name[10]);
            return buf;
      } else if (strncmp(name, "BACKCOLOR ", 10) == 0) {
            g_snprintf(buf, sizeof(buf), "<font back=\"%s\">", &name[10]);
            return buf;
      } else if (strncmp(name, "BACKGROUND ", 10) == 0) {
            g_snprintf(buf, sizeof(buf), "<body bgcolor=\"%s\">", &name[11]);
            return buf;
      } else if (strncmp(name, "FONT FACE ", 10) == 0) {
            g_snprintf(buf, sizeof(buf), "<font face=\"%s\">", &name[10]);
            return buf;
      } else if (strncmp(name, "FONT SIZE ", 10) == 0) {
            g_snprintf(buf, sizeof(buf), "<font size=\"%s\">", &name[10]);
            return buf;
      } else {
            char *str = buf;
            gboolean isset;
            int ivalue = 0;
            GdkColor *color = NULL;
            GObject *obj = G_OBJECT(tag);
            gboolean empty = TRUE;

            str += g_snprintf(str, sizeof(buf) - (str - buf), "<span style='");

            /* Weight */
            g_object_get(obj, "weight-set", &isset, "weight", &ivalue, NULL);
            if (isset) {
                  const char *weight = "";
                  if (ivalue >= PANGO_WEIGHT_ULTRABOLD)
                        weight = "bolder";
                  else if (ivalue >= PANGO_WEIGHT_BOLD)
                        weight = "bold";
                  else if (ivalue >= PANGO_WEIGHT_NORMAL)
                        weight = "normal";
                  else
                        weight = "lighter";

                  str += g_snprintf(str, sizeof(buf) - (str - buf), "font-weight: %s;", weight);
                  empty = FALSE;
            }

            /* Foreground color */
            g_object_get(obj, "foreground-set", &isset, "foreground-gdk", &color, NULL);
            if (isset && color) {
                  str += g_snprintf(str, sizeof(buf) - (str - buf),
                              "color: #%02x%02x%02x;",
                              color->red >> 8, color->green >> 8, color->blue >> 8);
                  empty = FALSE;
            }
            gdk_color_free(color);

            /* Background color */
            g_object_get(obj, "background-set", &isset, "background-gdk", &color, NULL);
            if (isset && color) {
                  str += g_snprintf(str, sizeof(buf) - (str - buf),
                              "background: #%02x%02x%02x;",
                              color->red >> 8, color->green >> 8, color->blue >> 8);
                  empty = FALSE;
            }
            gdk_color_free(color);

            /* Underline */
            g_object_get(obj, "underline-set", &isset, "underline", &ivalue, NULL);
            if (isset) {
                  switch (ivalue) {
                        case PANGO_UNDERLINE_NONE:
                        case PANGO_UNDERLINE_ERROR:
                              break;
                        default:
                              str += g_snprintf(str, sizeof(buf) - (str - buf), "text-decoration: underline;");
                              empty = FALSE;
                  }
            }

            g_snprintf(str, sizeof(buf) - (str - buf), "'>");

            return (empty ? "" : buf);
      }
}

static const gchar *tag_to_html_end(GtkTextTag *tag)
{
      const gchar *name;

      name = tag->name;
      g_return_val_if_fail(name != NULL, "");

      if (strcmp(name, "BOLD") == 0) {
            return "</b>";
      } else if (strcmp(name, "ITALICS") == 0) {
            return "</i>";
      } else if (strcmp(name, "UNDERLINE") == 0) {
            return "</u>";
      } else if (strcmp(name, "STRIKE") == 0) {
            return "</s>";
      } else if (strncmp(name, "LINK ", 5) == 0) {
            return "</a>";
      } else if (strncmp(name, "FORECOLOR ", 10) == 0) {
            return "</font>";
      } else if (strncmp(name, "BACKCOLOR ", 10) == 0) {
            return "</font>";
      } else if (strncmp(name, "BACKGROUND ", 10) == 0) {
            return "</body>";
      } else if (strncmp(name, "FONT FACE ", 10) == 0) {
            return "</font>";
      } else if (strncmp(name, "FONT SIZE ", 10) == 0) {
            return "</font>";
      } else {
            const char *props[] = {"weight-set", "foreground-set", "background-set",
                  "size-set", "underline-set", NULL};
            int i;
            for (i = 0; props[i]; i++) {
                  gboolean set = FALSE;
                  g_object_get(G_OBJECT(tag), props[i], &set, NULL);
                  if (set)
                        return "</span>";
            }

            return "";
      }
}

typedef struct {
      GtkTextTag *tag;
      char *end;
      char *start;
} PidginTextTagData;

static PidginTextTagData *text_tag_data_new(GtkTextTag *tag)
{
      const char *start, *end;
      PidginTextTagData *ret = NULL;

      start = tag_to_html_start(tag);
      if (!start || !*start)
            return NULL;
      end = tag_to_html_end(tag);
      if (!end || !*end)
            return NULL;

      ret = g_new0(PidginTextTagData, 1);
      ret->start = g_strdup(start);
      ret->end = g_strdup(end);
      ret->tag = tag;
      return ret;
}

static void text_tag_data_destroy(PidginTextTagData *data)
{
      g_free(data->start);
      g_free(data->end);
      g_free(data);
}

static gboolean tag_ends_here(GtkTextTag *tag, GtkTextIter *iter, GtkTextIter *niter)
{
      return ((gtk_text_iter_has_tag(iter, GTK_TEXT_TAG(tag)) &&
               !gtk_text_iter_has_tag(niter, GTK_TEXT_TAG(tag))) ||
              gtk_text_iter_is_end(niter));
}

/* Basic notion here: traverse through the text buffer one-by-one, non-character elements, such
 * as smileys and IM images are represented by the Unicode "unknown" character.  Handle them.  Else
 * check for tags that are toggled on, insert their html form, and  push them on the queue. Then insert
 * the actual text. Then check for tags that are toggled off and insert them, after checking the queue.
 * Finally, replace <, >, &, and " with their HTML equivalent.
 */
05342 char *gtk_imhtml_get_markup_range(GtkIMHtml *imhtml, GtkTextIter *start, GtkTextIter *end)
{
      gunichar c;
      GtkTextIter iter, next_iter, non_neutral_iter;
      gboolean is_rtl_message = FALSE;
      GString *str = g_string_new("");
      GSList *tags, *sl;
      GQueue *q;
      GtkTextTag *tag;
      PidginTextTagData *tagdata;

      q = g_queue_new();

      gtk_text_iter_order(start, end);
      non_neutral_iter = next_iter = iter = *start;
      gtk_text_iter_forward_char(&next_iter);

      /* Bi-directional text support */
      /* Get to the first non-neutral character */
#ifdef HAVE_PANGO14
      while ((PANGO_DIRECTION_NEUTRAL == pango_unichar_direction(gtk_text_iter_get_char(&non_neutral_iter)))
            && gtk_text_iter_forward_char(&non_neutral_iter));
      if (PANGO_DIRECTION_RTL == pango_unichar_direction(gtk_text_iter_get_char(&non_neutral_iter))) {
            is_rtl_message = TRUE;
            g_string_append(str, "<SPAN style=\"direction:rtl;text-align:right;\">");
      }
#endif

      /* First add the tags that are already in progress (we don't care about non-printing tags)*/
      tags = gtk_text_iter_get_tags(start);

      for (sl = tags; sl; sl = sl->next) {
            tag = sl->data;
            if (!gtk_text_iter_toggles_tag(start, GTK_TEXT_TAG(tag))) {
                  PidginTextTagData *data = text_tag_data_new(tag);
                  if (data) {
                        g_string_append(str, data->start);
                        g_queue_push_tail(q, data);
                  }
            }
      }
      g_slist_free(tags);

      while ((c = gtk_text_iter_get_char(&iter)) != 0 && !gtk_text_iter_equal(&iter, end)) {

            tags = gtk_text_iter_get_tags(&iter);

            for (sl = tags; sl; sl = sl->next) {
                  tag = sl->data;
                  if (gtk_text_iter_begins_tag(&iter, GTK_TEXT_TAG(tag))) {
                        PidginTextTagData *data = text_tag_data_new(tag);
                        if (data) {
                              g_string_append(str, data->start);
                              g_queue_push_tail(q, data);
                        }
                  }
            }

            if (c == 0xFFFC) {
                  GtkTextChildAnchor* anchor = gtk_text_iter_get_child_anchor(&iter);
                  if (anchor) {
                        char *text = g_object_get_data(G_OBJECT(anchor), "gtkimhtml_htmltext");
                        if (text)
                              str = g_string_append(str, text);
                  }
            } else if (c == '<') {
                  str = g_string_append(str, "&lt;");
            } else if (c == '>') {
                  str = g_string_append(str, "&gt;");
            } else if (c == '&') {
                  str = g_string_append(str, "&amp;");
            } else if (c == '"') {
                  str = g_string_append(str, "&quot;");
            } else if (c == '\n') {
                  str = g_string_append(str, "<br>");
            } else {
                  str = g_string_append_unichar(str, c);
            }

            tags = g_slist_reverse(tags);
            for (sl = tags; sl; sl = sl->next) {
                  tag = sl->data;
                  /** don't worry about non-printing tags ending */
                  if (tag_ends_here(tag, &iter, &next_iter) &&
                              strlen(tag_to_html_end(tag)) > 0 &&
                              strlen(tag_to_html_start(tag)) > 0) {

                        PidginTextTagData *tmp;
                        GQueue *r = g_queue_new();

                        while ((tmp = g_queue_pop_tail(q)) && tmp->tag != tag) {
                              g_string_append(str, tmp->end);
                              if (!tag_ends_here(tmp->tag, &iter, &next_iter))
                                    g_queue_push_tail(r, tmp);
                              else
                                    text_tag_data_destroy(tmp);
                        }

                        if (tmp != NULL) {
                              g_string_append(str, tmp->end);
                              text_tag_data_destroy(tmp);
                        }
#if 0 /* This can't be allowed to happen because it causes the iters to be invalidated in the debug window imhtml during text copying */
                        else
                              purple_debug_warning("gtkimhtml", "empty queue, more closing tags than open tags!\n");
#endif

                        while ((tmp = g_queue_pop_head(r))) {
                              g_string_append(str, tmp->start);
                              g_queue_push_tail(q, tmp);
                        }
                        g_queue_free(r);
                  }
            }

            g_slist_free(tags);
            gtk_text_iter_forward_char(&iter);
            gtk_text_iter_forward_char(&next_iter);
      }

      while ((tagdata = g_queue_pop_tail(q))) {
            g_string_append(str, tagdata->end);
            text_tag_data_destroy(tagdata);
      }

      /* Bi-directional text support - close tags */
      if (is_rtl_message)
            g_string_append(str, "</SPAN>");

      g_queue_free(q);
      return g_string_free(str, FALSE);
}

void gtk_imhtml_close_tags(GtkIMHtml *imhtml, GtkTextIter *iter)
{
      if (imhtml->edit.bold)
            gtk_imhtml_toggle_bold(imhtml);

      if (imhtml->edit.italic)
            gtk_imhtml_toggle_italic(imhtml);

      if (imhtml->edit.underline)
            gtk_imhtml_toggle_underline(imhtml);

      if (imhtml->edit.strike)
            gtk_imhtml_toggle_strike(imhtml);

      if (imhtml->edit.forecolor)
            gtk_imhtml_toggle_forecolor(imhtml, NULL);

      if (imhtml->edit.backcolor)
            gtk_imhtml_toggle_backcolor(imhtml, NULL);

      if (imhtml->edit.fontface)
            gtk_imhtml_toggle_fontface(imhtml, NULL);

      imhtml->edit.fontsize = 0;

      if (imhtml->edit.link)
            gtk_imhtml_toggle_link(imhtml, NULL);
}

05504 char *gtk_imhtml_get_markup(GtkIMHtml *imhtml)
{
      GtkTextIter start, end;

      gtk_text_buffer_get_start_iter(imhtml->text_buffer, &start);
      gtk_text_buffer_get_end_iter(imhtml->text_buffer, &end);
      return gtk_imhtml_get_markup_range(imhtml, &start, &end);
}

05513 char **gtk_imhtml_get_markup_lines(GtkIMHtml *imhtml)
{
      int i, j, lines;
      GtkTextIter start, end;
      char **ret;

      lines = gtk_text_buffer_get_line_count(imhtml->text_buffer);
      ret = g_new0(char *, lines + 1);
      gtk_text_buffer_get_start_iter(imhtml->text_buffer, &start);
      end = start;
      gtk_text_iter_forward_to_line_end(&end);

      for (i = 0, j = 0; i < lines; i++) {
            if (gtk_text_iter_get_char(&start) != '\n') {
                  ret[j] = gtk_imhtml_get_markup_range(imhtml, &start, &end);
                  if (ret[j] != NULL)
                        j++;
            }

            gtk_text_iter_forward_line(&start);
            end = start;
            gtk_text_iter_forward_to_line_end(&end);
      }

      return ret;
}

05540 char *gtk_imhtml_get_text(GtkIMHtml *imhtml, GtkTextIter *start, GtkTextIter *stop)
{
      GString *str = g_string_new("");
      GtkTextIter iter, end;
      gunichar c;

      if (start == NULL)
            gtk_text_buffer_get_start_iter(imhtml->text_buffer, &iter);
      else
            iter = *start;

      if (stop == NULL)
            gtk_text_buffer_get_end_iter(imhtml->text_buffer, &end);
      else
            end = *stop;

      gtk_text_iter_order(&iter, &end);

      while ((c = gtk_text_iter_get_char(&iter)) != 0 && !gtk_text_iter_equal(&iter, &end)) {
            if (c == 0xFFFC) {
                  GtkTextChildAnchor* anchor;
                  char *text = NULL;

                  anchor = gtk_text_iter_get_child_anchor(&iter);
                  if (anchor)
                        text = g_object_get_data(G_OBJECT(anchor), "gtkimhtml_plaintext");
                  if (text)
                        str = g_string_append(str, text);
            } else {
                  g_string_append_unichar(str, c);
            }
            gtk_text_iter_forward_char(&iter);
      }

      return g_string_free(str, FALSE);
}

05577 void gtk_imhtml_set_funcs(GtkIMHtml *imhtml, GtkIMHtmlFuncs *f)
{
      g_return_if_fail(imhtml != NULL);
      imhtml->funcs = f;
}

05583 void gtk_imhtml_setup_entry(GtkIMHtml *imhtml, PurpleConnectionFlags flags)
{
      GtkIMHtmlButtons buttons;

      if (flags & PURPLE_CONNECTION_HTML) {
            char color[8];
            GdkColor fg_color, bg_color;

            buttons = GTK_IMHTML_ALL;

            if (flags & PURPLE_CONNECTION_NO_BGCOLOR)
                  buttons &= ~GTK_IMHTML_BACKCOLOR;
            if (flags & PURPLE_CONNECTION_NO_FONTSIZE)
            {
                  buttons &= ~GTK_IMHTML_GROW;
                  buttons &= ~GTK_IMHTML_SHRINK;
            }
            if (flags & PURPLE_CONNECTION_NO_URLDESC)
                  buttons &= ~GTK_IMHTML_LINKDESC;

            gtk_imhtml_set_format_functions(imhtml, GTK_IMHTML_ALL);
            if (purple_prefs_get_bool(PIDGIN_PREFS_ROOT "/conversations/send_bold") != imhtml->edit.bold)
                  gtk_imhtml_toggle_bold(imhtml);

            if (purple_prefs_get_bool(PIDGIN_PREFS_ROOT "/conversations/send_italic") != imhtml->edit.italic)
                  gtk_imhtml_toggle_italic(imhtml);

            if (purple_prefs_get_bool(PIDGIN_PREFS_ROOT "/conversations/send_underline") != imhtml->edit.underline)
                  gtk_imhtml_toggle_underline(imhtml);

            gtk_imhtml_toggle_fontface(imhtml,
                  purple_prefs_get_string(PIDGIN_PREFS_ROOT "/conversations/font_face"));

            if (!(flags & PURPLE_CONNECTION_NO_FONTSIZE))
            {
                  int size = purple_prefs_get_int(PIDGIN_PREFS_ROOT "/conversations/font_size");

                  /* 3 is the default. */
                  if (size != 3)
                        gtk_imhtml_font_set_size(imhtml, size);
            }

            if(strcmp(purple_prefs_get_string(PIDGIN_PREFS_ROOT "/conversations/fgcolor"), "") != 0)
            {
                  gdk_color_parse(purple_prefs_get_string(PIDGIN_PREFS_ROOT "/conversations/fgcolor"),
                                          &fg_color);
                  g_snprintf(color, sizeof(color), "#%02x%02x%02x",
                                                      fg_color.red   / 256,
                                                      fg_color.green / 256,
                                                      fg_color.blue  / 256);
            } else
                  strcpy(color, "");

            gtk_imhtml_toggle_forecolor(imhtml, color);

            if(!(flags & PURPLE_CONNECTION_NO_BGCOLOR) &&
               strcmp(purple_prefs_get_string(PIDGIN_PREFS_ROOT "/conversations/bgcolor"), "") != 0)
            {
                  gdk_color_parse(purple_prefs_get_string(PIDGIN_PREFS_ROOT "/conversations/bgcolor"),
                                          &bg_color);
                  g_snprintf(color, sizeof(color), "#%02x%02x%02x",
                                                      bg_color.red   / 256,
                                                      bg_color.green / 256,
                                                      bg_color.blue  / 256);
            } else
                  strcpy(color, "");

            gtk_imhtml_toggle_background(imhtml, color);

            if (flags & PURPLE_CONNECTION_FORMATTING_WBFO)
                  gtk_imhtml_set_whole_buffer_formatting_only(imhtml, TRUE);
            else
                  gtk_imhtml_set_whole_buffer_formatting_only(imhtml, FALSE);
      } else {
            buttons = GTK_IMHTML_SMILEY | GTK_IMHTML_IMAGE;
            imhtml_clear_formatting(imhtml);
      }

      if (flags & PURPLE_CONNECTION_NO_IMAGES)
            buttons &= ~GTK_IMHTML_IMAGE;

      if (flags & PURPLE_CONNECTION_ALLOW_CUSTOM_SMILEY)
            buttons |= GTK_IMHTML_CUSTOM_SMILEY;
      else
            buttons &= ~GTK_IMHTML_CUSTOM_SMILEY;

      gtk_imhtml_set_format_functions(imhtml, buttons);
}

/*******
 * GtkIMHtmlSmiley functions
 *******/
static void gtk_custom_smiley_allocated(GdkPixbufLoader *loader, gpointer user_data)
{
      GtkIMHtmlSmiley *smiley;

      smiley = (GtkIMHtmlSmiley *)user_data;
      smiley->icon = gdk_pixbuf_loader_get_animation(loader);

      if (smiley->icon)
            g_object_ref(G_OBJECT(smiley->icon));
#ifdef DEBUG_CUSTOM_SMILEY
      purple_debug_info("custom-smiley", "gtk_custom_smiley_allocated(): got GdkPixbufAnimation %p for smiley '%s'\n", smiley->icon, smiley->smile);
#endif
}

static void gtk_custom_smiley_closed(GdkPixbufLoader *loader, gpointer user_data)
{
      GtkIMHtmlSmiley *smiley;
      GtkWidget *icon = NULL;
      GtkTextChildAnchor *anchor = NULL;
      GSList *current = NULL;

      smiley = (GtkIMHtmlSmiley *)user_data;
      if (!smiley->imhtml) {
#ifdef DEBUG_CUSTOM_SMILEY
            purple_debug_error("custom-smiley", "gtk_custom_smiley_closed(): orphan smiley found: %p\n", smiley);
#endif
            g_object_unref(G_OBJECT(loader));
            smiley->loader = NULL;
            return;
      }

      for (current = smiley->anchors; current; current = g_slist_next(current)) {
            anchor = GTK_TEXT_CHILD_ANCHOR(current->data);
            if (gtk_text_child_anchor_get_deleted(anchor))
                  icon = NULL;
            else
                  icon = gtk_image_new_from_animation(smiley->icon);

#ifdef DEBUG_CUSTOM_SMILEY
            purple_debug_info("custom-smiley", "gtk_custom_smiley_closed(): got GtkImage %p from GtkPixbufAnimation %p for smiley '%s'\n",
                        icon, smiley->icon, smiley->smile);
#endif
            if (icon) {
                  GList *wids;
                  gtk_widget_show(icon);

                  wids = gtk_text_child_anchor_get_widgets(anchor);

                  g_object_set_data_full(G_OBJECT(anchor), "gtkimhtml_plaintext", purple_unescape_html(smiley->smile), g_free);
                  g_object_set_data_full(G_OBJECT(anchor), "gtkimhtml_htmltext", g_strdup(smiley->smile), g_free);

                  if (smiley->imhtml) {
                        if (wids) {
                              GList *children = gtk_container_get_children(GTK_CONTAINER(wids->data));
                              g_list_foreach(children, (GFunc)gtk_widget_destroy, NULL);
                              g_list_free(children);
                              gtk_container_add(GTK_CONTAINER(wids->data), icon);
                        } else
                              gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(smiley->imhtml), icon, anchor);
                  }
                  g_list_free(wids);
            }
            g_object_unref(anchor);
      }

      g_slist_free(smiley->anchors);
      smiley->anchors = NULL;

      g_object_unref(G_OBJECT(loader));
      smiley->loader = NULL;
}

static void
gtk_custom_smiley_size_prepared(GdkPixbufLoader *loader, gint width, gint height, gpointer data)
{
#define CUSTOM_SMILEY_SIZE 96 /* XXX: Should this be a theme setting? */
      if (width <= CUSTOM_SMILEY_SIZE && height <= CUSTOM_SMILEY_SIZE)
            return;

      if (width >= height) {
            height = height * CUSTOM_SMILEY_SIZE / width;
            width = CUSTOM_SMILEY_SIZE;
      } else {
            width = width * CUSTOM_SMILEY_SIZE / height;
            height = CUSTOM_SMILEY_SIZE;
      }

      gdk_pixbuf_loader_set_size(loader, width, height);
}

void
05766 gtk_imhtml_smiley_reload(GtkIMHtmlSmiley *smiley)
{
      if (smiley->icon)
            g_object_unref(smiley->icon);
      if (smiley->loader)
            g_object_unref(smiley->loader);  /* XXX: does this crash? */

      smiley->icon = NULL;
      smiley->loader = NULL;

      if (smiley->file) {
            /* We do not use the pixbuf loader for a smiley that can be loaded
             * from a file. (e.g., local custom smileys)
             */
            return;
      }

      smiley->loader = gdk_pixbuf_loader_new();

      g_signal_connect(smiley->loader, "area_prepared", G_CALLBACK(gtk_custom_smiley_allocated), smiley);
      g_signal_connect(smiley->loader, "closed", G_CALLBACK(gtk_custom_smiley_closed), smiley);
      g_signal_connect(smiley->loader, "size_prepared", G_CALLBACK(gtk_custom_smiley_size_prepared), smiley);
}

05790 GtkIMHtmlSmiley *gtk_imhtml_smiley_create(const char *file, const char *shortcut, gboolean hide,
            GtkIMHtmlSmileyFlags flags)
{
      GtkIMHtmlSmiley *smiley = g_new0(GtkIMHtmlSmiley, 1);
      smiley->file = g_strdup(file);
      smiley->smile = g_strdup(shortcut);
      smiley->hidden = hide;
      smiley->flags = flags;
      smiley->imhtml = NULL;
      gtk_imhtml_smiley_reload(smiley);
      return smiley;
}

05803 void gtk_imhtml_smiley_destroy(GtkIMHtmlSmiley *smiley)
{
      gtk_imhtml_disassociate_smiley(smiley);
      g_free(smiley->smile);
      g_free(smiley->file);
      if (smiley->icon)
            g_object_unref(smiley->icon);
      if (smiley->loader)
            g_object_unref(smiley->loader);
      g_free(smiley->data);
      g_free(smiley);
}

05816 gboolean gtk_imhtml_class_register_protocol(const char *name,
            gboolean (*activate)(GtkIMHtml *imhtml, GtkIMHtmlLink *link),
            gboolean (*context_menu)(GtkIMHtml *imhtml, GtkIMHtmlLink *link, GtkWidget *menu))
{
      GtkIMHtmlClass *klass;
      GtkIMHtmlProtocol *proto;

      g_return_val_if_fail(name, FALSE);

      klass = g_type_class_ref(GTK_TYPE_IMHTML);
      g_return_val_if_fail(klass, FALSE);

      if ((proto = imhtml_find_protocol(name, TRUE))) {
            if (activate) {
                  return FALSE;
            }
            klass->protocols = g_list_remove(klass->protocols, proto);
            g_free(proto->name);
            g_free(proto);
            return TRUE;
      } else if (!activate) {
            return FALSE;
      }

      proto = g_new0(GtkIMHtmlProtocol, 1);
      proto->name = g_strdup(name);
      proto->length = strlen(name);
      proto->activate = activate;
      proto->context_menu = context_menu;
      klass->protocols = g_list_prepend(klass->protocols, proto);

      return TRUE;
}

static void
gtk_imhtml_activate_tag(GtkIMHtml *imhtml, GtkTextTag *tag)
{
      /* A link was clicked--we emit the "url_clicked" signal
       * with the URL as the argument */
      g_object_ref(G_OBJECT(tag));
      g_signal_emit(imhtml, signals[URL_CLICKED], 0, g_object_get_data(G_OBJECT(tag), "link_url"));
      g_object_unref(G_OBJECT(tag));
      g_object_set_data(G_OBJECT(tag), "visited", GINT_TO_POINTER(TRUE));
      gtk_imhtml_set_link_color(GTK_IMHTML(imhtml), tag);
}

05862 gboolean gtk_imhtml_link_activate(GtkIMHtmlLink *link)
{
      g_return_val_if_fail(link, FALSE);

      if (link->tag) {
            gtk_imhtml_activate_tag(link->imhtml, link->tag);
      } else if (link->url) {
            g_signal_emit(link->imhtml, signals[URL_CLICKED], 0, link->url);
      } else
            return FALSE;
      return TRUE;
}

05875 const char *gtk_imhtml_link_get_url(GtkIMHtmlLink *link)
{
      return link->url;
}

05880 const GtkTextTag * gtk_imhtml_link_get_text_tag(GtkIMHtmlLink *link)
{
      return link->tag;
}

static gboolean return_add_newline_cb(GtkWidget *widget, gpointer data)
{
      GtkTextBuffer *buffer;
      GtkTextMark *mark;
      GtkTextIter iter;

      buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(widget));

      /* Delete any currently selected text */
      gtk_text_buffer_delete_selection(buffer, TRUE, TRUE);

      /* Insert a newline at the current cursor position */
      mark = gtk_text_buffer_get_insert(buffer);
      gtk_text_buffer_get_iter_at_mark(buffer, &iter, mark);
      gtk_imhtml_insert_html_at_iter(GTK_IMHTML(widget), "\n", 0, &iter);

      /*
       * If we just newlined ourselves past the end of the visible area
       * then scroll down so the cursor is in view.
       */
      gtk_text_view_scroll_to_mark(GTK_TEXT_VIEW(widget),
                  gtk_text_buffer_get_insert(buffer),
                  0, FALSE, 0.0, 0.0);

      return TRUE;
}

/*
 * It's kind of a pain that we need this function and the above just
 * to reinstate the default GtkTextView behavior.  It might be better
 * if GtkIMHtml didn't intercept the enter key and just required the
 * application to deal with it--it's really not much more work than it
 * is to connect to the current "message_send" signal.
 */
05919 void gtk_imhtml_set_return_inserts_newline(GtkIMHtml *imhtml)
{
      g_signal_connect(G_OBJECT(imhtml), "message_send",
            G_CALLBACK(return_add_newline_cb), NULL);
}

05925 void gtk_imhtml_set_populate_primary_clipboard(GtkIMHtml *imhtml, gboolean populate)
{
      gulong signal_id;
      signal_id = g_signal_handler_find(imhtml->text_buffer,
                  G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_UNBLOCKED, 0, 0, NULL,
                  mark_set_so_update_selection_cb, NULL);
      if (populate) {
            if (!signal_id) {
                  /* We didn't find an unblocked signal handler, which means there
                     is a blocked handler. Now unblock it.
                     This is necessary to avoid a mutex-lock when the debug message
                     saying 'no handler is blocked' is printed in the debug window.
                        -- sad
                   */
                  g_signal_handlers_unblock_matched(imhtml->text_buffer,
                              G_SIGNAL_MATCH_FUNC, 0, 0, NULL,
                              mark_set_so_update_selection_cb, NULL);
            }
      } else {
            /* Block only if we found an unblocked handler */
            if (signal_id)
                  g_signal_handler_block(imhtml->text_buffer, signal_id);
      }
}

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