Rename EmpathyChatSimpleView to EmpathyChatTextView

svn path=/trunk/; revision=1987

1 files changed, 1236 insertions, 0 deletions

diff --git a/libempathy-gtk/empathy-chat-text-view.c b/libempathy-gtk/empathy-chat-text-view.c
new file mode 100644
index 000000000..b36d16103
--- /dev/null
+++ b/libempathy-gtk/empathy-chat-text-view.c
@@ -0,0 +1,1236 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Copyright (C) 2002-2007 Imendio AB
+ * Copyright (C) 2008 Collabora Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ * 
+ * Authors: Mikael Hallendal <micke@imendio.com>
+ *          Richard Hult <richard@imendio.com>
+ *          Martyn Russell <martyn@imendio.com>
+ *          Xavier Claessens <xclaesse@gmail.com>
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <string.h>
+#include <time.h>
+
+#include <glib/gi18n-lib.h>
+#include <gtk/gtkbutton.h>
+#include <gtk/gtkimage.h>
+#include <gtk/gtkmenu.h>
+#include <gtk/gtkmenuitem.h>
+#include <gtk/gtkimagemenuitem.h>
+#include <gtk/gtkstock.h>
+#include <gtk/gtkscrolledwindow.h>
+#include <gtk/gtksizegroup.h>
+#include <glade/glade.h>
+
+#include <telepathy-glib/util.h>
+#include <libmissioncontrol/mc-account.h>
+
+#include <libempathy/empathy-utils.h>
+
+#include "empathy-chat-text-view.h"
+#include "empathy-chat.h"
+#include "empathy-conf.h"
+#include "empathy-theme-manager.h"
+#include "empathy-ui-utils.h"
+#include "empathy-smiley-manager.h"
+
+#define DEBUG_FLAG EMPATHY_DEBUG_CHAT
+#include <libempathy/empathy-debug.h>
+
+/* Number of seconds between timestamps when using normal mode, 5 minutes. */
+#define TIMESTAMP_INTERVAL 300
+
+#define MAX_LINES 800
+#define MAX_SCROLL_TIME 0.4 /* seconds */
+#define SCROLL_DELAY 33     /* milliseconds */
+
+#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyChatTextView)
+
+typedef struct {
+	GtkTextBuffer *buffer;
+	
+	EmpathyTheme   *theme;
+	
+	time_t         last_timestamp;
+	
+	gboolean       allow_scrolling;
+	guint          scroll_timeout;
+	GTimer        *scroll_time;
+	
+	GtkTextMark   *find_mark_previous;
+	GtkTextMark   *find_mark_next;
+	gboolean       find_wrapped;
+	gboolean       find_last_direction;
+	
+	/* This is for the group chat so we know if the "other" last contact
+	  * changed, so we know whether to insert a header or not.
+	  */
+	EmpathyContact *last_contact;
+	
+	guint          notify_system_fonts_id;
+	guint          notify_show_avatars_id;
+} EmpathyChatTextViewPriv;
+
+static void chat_text_view_iface_init (EmpathyChatViewIface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (EmpathyChatTextView, empathy_chat_text_view,
+			 GTK_TYPE_TEXT_VIEW,
+			 G_IMPLEMENT_INTERFACE (EMPATHY_TYPE_CHAT_VIEW,
+						chat_text_view_iface_init));
+
+static gboolean
+chat_text_view_url_event_cb (GtkTextTag          *tag,
+			     GObject             *object,
+			     GdkEvent            *event,
+			     GtkTextIter         *iter,
+			     EmpathyChatTextView *view)
+{
+	EmpathyChatTextViewPriv *priv;
+	GtkTextIter              start, end;
+	gchar                   *str;
+
+	priv = GET_PRIV (view);
+
+	/* If the link is being selected, don't do anything. */
+	gtk_text_buffer_get_selection_bounds (priv->buffer, &start, &end);
+	if (gtk_text_iter_get_offset (&start) != gtk_text_iter_get_offset (&end)) {
+		return FALSE;
+	}
+	
+	if (event->type == GDK_BUTTON_RELEASE && event->button.button == 1) {
+		start = end = *iter;
+		
+		if (gtk_text_iter_backward_to_tag_toggle (&start, tag) &&
+		    gtk_text_iter_forward_to_tag_toggle (&end, tag)) {
+			    str = gtk_text_buffer_get_text (priv->buffer,
+							    &start,
+							    &end,
+							    FALSE);
+			    
+			    empathy_url_show (GTK_WIDGET (view), str);
+			    g_free (str);
+		    }
+	}
+	
+	return FALSE;
+}
+
+static gboolean
+chat_text_view_event_cb (EmpathyChatTextView *view,
+			 GdkEventMotion      *event,
+			 GtkTextTag          *tag)
+{
+	static GdkCursor  *hand = NULL;
+	static GdkCursor  *beam = NULL;
+	GtkTextWindowType  type;
+	GtkTextIter        iter;
+	GdkWindow         *win;
+	gint               x, y, buf_x, buf_y;
+	
+	type = gtk_text_view_get_window_type (GTK_TEXT_VIEW (view),
+					      event->window);
+	
+	if (type != GTK_TEXT_WINDOW_TEXT) {
+		return FALSE;
+	}
+	
+	/* Get where the pointer really is. */
+	win = gtk_text_view_get_window (GTK_TEXT_VIEW (view), type);
+	if (!win) {
+		return FALSE;
+	}
+	
+	gdk_window_get_pointer (win, &x, &y, NULL);
+	
+	/* Get the iter where the cursor is at */
+	gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (view), type,
+					       x, y,
+					       &buf_x, &buf_y);
+	
+	gtk_text_view_get_iter_at_location (GTK_TEXT_VIEW (view),
+					    &iter,
+					    buf_x, buf_y);
+	
+	if (gtk_text_iter_has_tag (&iter, tag)) {
+		if (!hand) {
+			hand = gdk_cursor_new (GDK_HAND2);
+			beam = gdk_cursor_new (GDK_XTERM);
+		}
+		gdk_window_set_cursor (win, hand);
+	} else {
+		if (!beam) {
+			beam = gdk_cursor_new (GDK_XTERM);
+		}
+		gdk_window_set_cursor (win, beam);
+	}
+	
+	return FALSE;
+}
+
+static void
+chat_text_view_setup_tags (EmpathyChatTextView *view)
+{
+	EmpathyChatTextViewPriv *priv;
+	GtkTextTag         *tag;
+	
+	priv = GET_PRIV (view);
+	
+	gtk_text_buffer_create_tag (priv->buffer,
+				    "cut",
+				    NULL);
+	
+	/* FIXME: Move to the theme and come up with something that looks a bit
+	 * nicer. */
+	gtk_text_buffer_create_tag (priv->buffer,
+				    "highlight",
+				    "background", "yellow",
+				    NULL);
+	
+	tag = gtk_text_buffer_create_tag (priv->buffer,
+					  "link",
+					  NULL);
+	
+	g_signal_connect (tag,
+			  "event",
+			  G_CALLBACK (chat_text_view_url_event_cb),
+			  view);
+	
+	g_signal_connect (view,
+			  "motion-notify-event",
+			  G_CALLBACK (chat_text_view_event_cb),
+			  tag);
+}
+
+static void
+chat_text_view_system_font_update (EmpathyChatTextView *view)
+{
+	PangoFontDescription *font_description = NULL;
+	gchar                *font_name;
+	
+	if (empathy_conf_get_string (empathy_conf_get (),
+				     "/desktop/gnome/interface/document_font_name",
+				     &font_name) && font_name) {
+					     font_description = pango_font_description_from_string (font_name);
+					     g_free (font_name);
+				     } else {
+					     font_description = NULL;
+				     }
+	
+	gtk_widget_modify_font (GTK_WIDGET (view), font_description);
+	
+	if (font_description) {
+		pango_font_description_free (font_description);
+	}
+}
+
+static void
+chat_text_view_notify_system_font_cb (EmpathyConf *conf,
+				      const gchar *key,
+				      gpointer     user_data)
+{
+	EmpathyChatTextView     *view = user_data;
+	EmpathyChatTextViewPriv *priv = GET_PRIV (view);
+	gboolean                 show_avatars = FALSE;
+	
+	chat_text_view_system_font_update (view);
+	
+	/* Ugly, again, to adjust the vertical position of the nick... Will fix
+	  * this when reworking the theme manager so that view register
+	  * themselves with it instead of the other way around.
+	  */
+	empathy_conf_get_bool (conf,
+			       EMPATHY_PREFS_UI_SHOW_AVATARS,
+			       &show_avatars);
+	
+	empathy_theme_set_show_avatars (priv->theme, show_avatars);
+}
+
+static void
+chat_text_view_notify_show_avatars_cb (EmpathyConf *conf,
+				       const gchar *key,
+				       gpointer     user_data)
+{
+	EmpathyChatTextView     *view;
+	EmpathyChatTextViewPriv *priv;
+	gboolean            show_avatars = FALSE;
+	
+	view = user_data;
+	priv = GET_PRIV (view);
+	
+	empathy_conf_get_bool (conf, key, &show_avatars);
+	
+	empathy_theme_set_show_avatars (priv->theme, show_avatars);
+}
+
+static void
+chat_text_view_clear_view_cb (GtkMenuItem *menuitem, EmpathyChatTextView *view)
+{
+	empathy_chat_view_clear (EMPATHY_CHAT_VIEW (view));
+}
+
+static void
+chat_text_view_open_address_cb (GtkMenuItem *menuitem, const gchar *url)
+{
+	empathy_url_show (GTK_WIDGET (menuitem), url);
+}
+
+static void
+chat_text_view_copy_address_cb (GtkMenuItem *menuitem, const gchar *url)
+{
+	GtkClipboard *clipboard;
+	
+	clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
+	gtk_clipboard_set_text (clipboard, url, -1);
+	
+	clipboard = gtk_clipboard_get (GDK_SELECTION_PRIMARY);
+	gtk_clipboard_set_text (clipboard, url, -1);
+}
+
+static void
+chat_text_view_populate_popup (EmpathyChatTextView *view,
+			  GtkMenu        *menu,
+			  gpointer        user_data)
+{
+	EmpathyChatTextViewPriv *priv;
+	GtkTextTagTable    *table;
+	GtkTextTag         *tag;
+	gint                x, y;
+	GtkTextIter         iter, start, end;
+	GtkWidget          *item;
+	gchar              *str = NULL;
+	
+	priv = GET_PRIV (view);
+	
+	/* Clear menu item */
+	if (gtk_text_buffer_get_char_count (priv->buffer) > 0) {
+		item = gtk_menu_item_new ();
+		gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
+		gtk_widget_show (item);
+		
+		item = gtk_image_menu_item_new_from_stock (GTK_STOCK_CLEAR, NULL);
+		gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
+		gtk_widget_show (item);
+		
+		g_signal_connect (item,
+				  "activate",
+				  G_CALLBACK (chat_text_view_clear_view_cb),
+				  view);
+	}
+	
+	/* Link context menu items */
+	table = gtk_text_buffer_get_tag_table (priv->buffer);
+	tag = gtk_text_tag_table_lookup (table, "link");
+	
+	gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
+	
+	gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (view),
+					       GTK_TEXT_WINDOW_WIDGET,
+					       x, y,
+					       &x, &y);
+	
+	gtk_text_view_get_iter_at_location (GTK_TEXT_VIEW (view), &iter, x, y);
+	
+	start = end = iter;
+	
+	if (gtk_text_iter_backward_to_tag_toggle (&start, tag) &&
+	    gtk_text_iter_forward_to_tag_toggle (&end, tag)) {
+		    str = gtk_text_buffer_get_text (priv->buffer,
+						    &start, &end, FALSE);
+	    }
+	
+	if (G_STR_EMPTY (str)) {
+		g_free (str);
+		return;
+	}
+	
+	/* NOTE: Set data just to get the string freed when not needed. */
+	g_object_set_data_full (G_OBJECT (menu),
+				"url", str,
+				(GDestroyNotify) g_free);
+	
+	item = gtk_menu_item_new ();
+	gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
+	gtk_widget_show (item);
+	
+	item = gtk_menu_item_new_with_mnemonic (_("_Copy Link Address"));
+	g_signal_connect (item,
+			  "activate",
+			  G_CALLBACK (chat_text_view_copy_address_cb),
+			  str);
+	gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
+	gtk_widget_show (item);
+	
+	item = gtk_menu_item_new_with_mnemonic (_("_Open Link"));
+	g_signal_connect (item,
+			  "activate",
+			  G_CALLBACK (chat_text_view_open_address_cb),
+			  str);
+	gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
+	gtk_widget_show (item);
+}
+
+static gboolean
+chat_text_view_is_scrolled_down (EmpathyChatTextView *view)
+{
+	GtkWidget *sw;
+	
+	sw = gtk_widget_get_parent (GTK_WIDGET (view));
+	if (GTK_IS_SCROLLED_WINDOW (sw)) {
+		GtkAdjustment *vadj;
+		
+		vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (sw));
+		
+		if (vadj->value + vadj->page_size / 2 < vadj->upper - vadj->page_size) {
+			return FALSE;
+		}
+	}
+	
+	return TRUE;
+}
+
+static void
+chat_text_view_maybe_trim_buffer (EmpathyChatTextView *view)
+{
+	EmpathyChatTextViewPriv *priv;
+	GtkTextIter         top, bottom;
+	gint                line;
+	gint                remove;
+	GtkTextTagTable    *table;
+	GtkTextTag         *tag;
+	
+	priv = GET_PRIV (view);
+	
+	gtk_text_buffer_get_end_iter (priv->buffer, &bottom);
+	line = gtk_text_iter_get_line (&bottom);
+	if (line < MAX_LINES) {
+		return;
+	}
+	
+	remove = line - MAX_LINES;
+	gtk_text_buffer_get_start_iter (priv->buffer, &top);
+	
+	bottom = top;
+	if (!gtk_text_iter_forward_lines (&bottom, remove)) {
+		return;
+	}
+	
+	/* Track backwords to a place where we can safely cut, we don't do it in
+	  * the middle of a tag.
+	  */
+	table = gtk_text_buffer_get_tag_table (priv->buffer);
+	tag = gtk_text_tag_table_lookup (table, "cut");
+	if (!tag) {
+		return;
+	}
+	
+	if (!gtk_text_iter_forward_to_tag_toggle (&bottom, tag)) {
+		return;
+	}
+	
+	if (!gtk_text_iter_equal (&top, &bottom)) {
+		gtk_text_buffer_delete (priv->buffer, &top, &bottom);
+	}
+}
+
+static void
+chat_text_view_theme_changed_cb (EmpathyThemeManager *manager,
+			    EmpathyChatTextView     *view)
+{
+	EmpathyChatTextViewPriv *priv;
+	gboolean            show_avatars = FALSE;
+	
+	priv = GET_PRIV (view);
+	
+	empathy_theme_manager_apply_saved (manager, EMPATHY_CHAT_VIEW (view));
+
+	/* Needed for now to update the "rise" property of the names to get it
+	  * vertically centered.
+	  */
+	empathy_conf_get_bool (empathy_conf_get (),
+			       EMPATHY_PREFS_UI_SHOW_AVATARS,
+			       &show_avatars);
+	empathy_theme_set_show_avatars (priv->theme, show_avatars);
+}
+
+static void
+chat_text_view_size_allocate (GtkWidget     *widget,
+			      GtkAllocation *alloc)
+{
+	gboolean down;
+	
+	down = chat_text_view_is_scrolled_down (EMPATHY_CHAT_TEXT_VIEW (widget));
+	
+	GTK_WIDGET_CLASS (empathy_chat_text_view_parent_class)->size_allocate (widget, alloc);
+	
+	if (down) {
+		GtkAdjustment *adj;
+		
+		adj = GTK_TEXT_VIEW (widget)->vadjustment;
+		gtk_adjustment_set_value (adj, adj->upper - adj->page_size);
+	}
+}
+
+static gboolean
+chat_text_view_drag_motion (GtkWidget      *widget,
+			    GdkDragContext *context,
+			    gint            x,
+			    gint            y,
+			    guint           time)
+{
+	/* Don't handle drag motion, since we don't want the view to scroll as
+	 * the result of dragging something across it. */
+	
+	return FALSE;
+}
+
+static void
+chat_text_view_theme_notify_cb (EmpathyTheme        *theme,
+				GParamSpec          *param,
+				EmpathyChatTextView *view)
+{
+	empathy_theme_update_view (theme, EMPATHY_CHAT_VIEW (view));
+}
+
+static void
+chat_text_view_finalize (GObject *object)
+{
+	EmpathyChatTextView     *view;
+	EmpathyChatTextViewPriv *priv;
+	
+	view = EMPATHY_CHAT_TEXT_VIEW (object);
+	priv = GET_PRIV (view);
+	
+	DEBUG ("%p", object);
+	
+	empathy_conf_notify_remove (empathy_conf_get (), priv->notify_system_fonts_id);
+	empathy_conf_notify_remove (empathy_conf_get (), priv->notify_show_avatars_id);
+	
+	if (priv->last_contact) {
+		g_object_unref (priv->last_contact);
+	}
+	if (priv->scroll_time) {
+		g_timer_destroy (priv->scroll_time);
+	}
+	if (priv->scroll_timeout) {
+		g_source_remove (priv->scroll_timeout);
+	}
+	
+	if (priv->theme) {
+		g_signal_handlers_disconnect_by_func (priv->theme,
+						      chat_text_view_theme_notify_cb,
+						      view);
+		g_object_unref (priv->theme);
+	}
+	
+	G_OBJECT_CLASS (empathy_chat_text_view_parent_class)->finalize (object);
+}
+
+static void
+empathy_chat_text_view_class_init (EmpathyChatTextViewClass *klass)
+{
+	GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+	GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+	
+	object_class->finalize = chat_text_view_finalize;
+	widget_class->size_allocate = chat_text_view_size_allocate;
+	widget_class->drag_motion = chat_text_view_drag_motion; 
+	
+	g_type_class_add_private (object_class, sizeof (EmpathyChatTextViewPriv));
+}
+
+static void
+empathy_chat_text_view_init (EmpathyChatTextView *view)
+{
+	gboolean             show_avatars;
+	EmpathyChatTextViewPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (view,
+		EMPATHY_TYPE_CHAT_TEXT_VIEW, EmpathyChatTextViewPriv);
+
+	view->priv = priv;	
+	priv->buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
+	priv->last_timestamp = 0;
+	priv->allow_scrolling = TRUE;
+	
+	g_object_set (view,
+		      "wrap-mode", GTK_WRAP_WORD_CHAR,
+		      "editable", FALSE,
+		      "cursor-visible", FALSE,
+		      NULL);
+	
+	priv->notify_system_fonts_id =
+		empathy_conf_notify_add (empathy_conf_get (),
+					 "/desktop/gnome/interface/document_font_name",
+					 chat_text_view_notify_system_font_cb,
+					 view);
+	chat_text_view_system_font_update (view);
+	
+	priv->notify_show_avatars_id =
+		empathy_conf_notify_add (empathy_conf_get (),
+					 EMPATHY_PREFS_UI_SHOW_AVATARS,
+					 chat_text_view_notify_show_avatars_cb,
+					 view);
+	
+	chat_text_view_setup_tags (view);
+	
+	empathy_theme_manager_apply_saved (empathy_theme_manager_get (), EMPATHY_CHAT_VIEW(view));
+	
+	show_avatars = FALSE;
+	empathy_conf_get_bool (empathy_conf_get (),
+			       EMPATHY_PREFS_UI_SHOW_AVATARS,
+			       &show_avatars);
+	
+	empathy_theme_set_show_avatars (priv->theme, show_avatars);
+	
+	g_signal_connect (view,
+			  "populate-popup",
+			  G_CALLBACK (chat_text_view_populate_popup),
+			  NULL);
+	
+	g_signal_connect_object (empathy_theme_manager_get (),
+				 "theme-changed",
+				 G_CALLBACK (chat_text_view_theme_changed_cb),
+				 EMPATHY_CHAT_VIEW(view),
+				 0);
+}
+
+EmpathyChatTextView *
+empathy_chat_text_view_new (void)
+{
+	return g_object_new (EMPATHY_TYPE_CHAT_TEXT_VIEW, NULL);
+}
+
+/* Code stolen from pidgin/gtkimhtml.c */
+static gboolean
+chat_text_view_scroll_cb (EmpathyChatTextView *view)
+{
+	EmpathyChatTextViewPriv *priv;
+	GtkAdjustment      *adj;
+	gdouble             max_val;
+	
+	priv = GET_PRIV (view);
+	adj = GTK_TEXT_VIEW (view)->vadjustment;
+	max_val = adj->upper - adj->page_size;
+	
+	g_return_val_if_fail (priv->scroll_time != NULL, FALSE);
+	
+	if (g_timer_elapsed (priv->scroll_time, NULL) > MAX_SCROLL_TIME) {
+		/* time's up. jump to the end and kill the timer */
+		gtk_adjustment_set_value (adj, max_val);
+		g_timer_destroy (priv->scroll_time);
+		priv->scroll_time = NULL;
+		priv->scroll_timeout = 0;
+		return FALSE;
+	}
+	
+	/* scroll by 1/3rd the remaining distance */
+	gtk_adjustment_set_value (adj, gtk_adjustment_get_value (adj) + ((max_val - gtk_adjustment_get_value (adj)) / 3));
+	return TRUE;
+}
+
+static void
+chat_text_view_scroll_down (EmpathyChatView *view)
+{
+	EmpathyChatTextViewPriv *priv = GET_PRIV (view);
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	
+	if (!priv->allow_scrolling) {
+		return;
+	}
+
+	DEBUG ("Scrolling down");
+
+	if (priv->scroll_time) {
+		g_timer_reset (priv->scroll_time);
+	} else {
+		priv->scroll_time = g_timer_new();
+	}
+	if (!priv->scroll_timeout) {
+		priv->scroll_timeout = g_timeout_add (SCROLL_DELAY,
+						      (GSourceFunc) chat_text_view_scroll_cb,
+						      view);
+	}
+}
+
+static void
+chat_text_view_append_message (EmpathyChatView *view,
+				 EmpathyMessage  *msg)
+{
+	EmpathyChatTextViewPriv *priv = GET_PRIV (view);
+	gboolean             bottom;
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	g_return_if_fail (EMPATHY_IS_MESSAGE (msg));
+	
+	if (!empathy_message_get_body (msg)) {
+		return;
+	}
+	
+	bottom = chat_text_view_is_scrolled_down (EMPATHY_CHAT_TEXT_VIEW (view));
+	
+	chat_text_view_maybe_trim_buffer (EMPATHY_CHAT_TEXT_VIEW (view));
+	
+	empathy_theme_append_message (priv->theme, EMPATHY_CHAT_VIEW(view), msg);
+	
+	if (bottom) {
+		chat_text_view_scroll_down (view);
+	}
+	
+	if (priv->last_contact) {
+		g_object_unref (priv->last_contact);
+	}
+	priv->last_contact = g_object_ref (empathy_message_get_sender (msg));
+}
+
+static void
+chat_text_view_append_event (EmpathyChatView *view,
+			       const gchar     *str)
+{
+	EmpathyChatTextViewPriv *priv;
+	gboolean            bottom;
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	g_return_if_fail (!G_STR_EMPTY (str));
+	
+	priv = GET_PRIV (view);
+	
+	bottom = chat_text_view_is_scrolled_down (EMPATHY_CHAT_TEXT_VIEW (view));
+	
+	chat_text_view_maybe_trim_buffer (EMPATHY_CHAT_TEXT_VIEW (view));
+	
+	empathy_theme_append_event (priv->theme, EMPATHY_CHAT_VIEW(view), str);
+	
+	if (bottom) {
+		chat_text_view_scroll_down (view);
+	}
+	
+	if (priv->last_contact) {
+		g_object_unref (priv->last_contact);
+		priv->last_contact = NULL;
+	}
+}
+
+static void
+chat_text_view_scroll (EmpathyChatView *view,
+			 gboolean         allow_scrolling)
+{
+	EmpathyChatTextViewPriv *priv = GET_PRIV (view);
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	
+	DEBUG ("Scrolling %s", allow_scrolling ? "enabled" : "disabled");
+
+	priv->allow_scrolling = allow_scrolling;
+	if (allow_scrolling) {
+		empathy_chat_view_scroll_down (view);
+	}
+}
+
+static gboolean
+chat_text_view_get_has_selection (EmpathyChatView *view)
+{
+	GtkTextBuffer *buffer;
+	
+	g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), FALSE);
+	
+	buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
+	
+	return gtk_text_buffer_get_has_selection (buffer);
+}
+
+static void
+chat_text_view_clear (EmpathyChatView *view)
+{
+	GtkTextBuffer      *buffer;
+	EmpathyChatTextViewPriv *priv;
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	
+	buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
+	gtk_text_buffer_set_text (buffer, "", -1);
+	
+	/* We set these back to the initial values so we get
+	  * timestamps when clearing the window to know when
+	  * conversations start.
+	  */
+	priv = GET_PRIV (view);
+	
+	priv->last_timestamp = 0;
+}
+
+static gboolean
+chat_text_view_find_previous (EmpathyChatView *view,
+				const gchar     *search_criteria,
+				gboolean         new_search)
+{
+	EmpathyChatTextViewPriv *priv;
+	GtkTextBuffer      *buffer;
+	GtkTextIter         iter_at_mark;
+	GtkTextIter         iter_match_start;
+	GtkTextIter         iter_match_end;
+	gboolean            found;
+	gboolean            from_start = FALSE;
+	
+	g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), FALSE);
+	g_return_val_if_fail (search_criteria != NULL, FALSE);
+	
+	priv = GET_PRIV (view);
+	
+	buffer = priv->buffer;
+	
+	if (G_STR_EMPTY (search_criteria)) {
+		if (priv->find_mark_previous) {
+			gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
+			
+			gtk_text_buffer_move_mark (buffer,
+						   priv->find_mark_previous,
+						   &iter_at_mark);
+			gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
+						      priv->find_mark_previous,
+						      0.0,
+						      TRUE,
+						      0.0,
+						      0.0);
+			gtk_text_buffer_select_range (buffer,
+						      &iter_at_mark,
+						      &iter_at_mark);
+		}
+		
+		return FALSE;
+	}
+	
+	if (new_search) {
+		from_start = TRUE;
+	}
+	
+	if (priv->find_mark_previous) {
+		gtk_text_buffer_get_iter_at_mark (buffer,
+						  &iter_at_mark,
+						  priv->find_mark_previous);
+	} else {
+		gtk_text_buffer_get_end_iter (buffer, &iter_at_mark);
+		from_start = TRUE;
+	}
+	
+	priv->find_last_direction = FALSE;
+	
+	found = empathy_text_iter_backward_search (&iter_at_mark,
+						   search_criteria,
+						   &iter_match_start,
+						   &iter_match_end,
+						   NULL);
+	
+	if (!found) {
+		gboolean result = FALSE;
+		
+		if (from_start) {
+			return result;
+		}
+		
+		/* Here we wrap around. */
+		if (!new_search && !priv->find_wrapped) {
+			priv->find_wrapped = TRUE;
+			result = chat_text_view_find_previous (view,
+								 search_criteria, 
+								 FALSE);
+			priv->find_wrapped = FALSE;
+		}
+		
+		return result;
+	}
+	
+	/* Set new mark and show on screen */
+	if (!priv->find_mark_previous) {
+		priv->find_mark_previous = gtk_text_buffer_create_mark (buffer, NULL,
+									&iter_match_start,
+									TRUE);
+	} else {
+		gtk_text_buffer_move_mark (buffer,
+					   priv->find_mark_previous,
+					   &iter_match_start);
+	}
+	
+	if (!priv->find_mark_next) {
+		priv->find_mark_next = gtk_text_buffer_create_mark (buffer, NULL,
+								    &iter_match_end,
+								    TRUE);
+	} else {
+		gtk_text_buffer_move_mark (buffer,
+					   priv->find_mark_next,
+					   &iter_match_end);
+	}
+	
+	gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
+				      priv->find_mark_previous,
+				      0.0,
+				      TRUE,
+				      0.5,
+				      0.5);
+	
+	gtk_text_buffer_move_mark_by_name (buffer, "selection_bound", &iter_match_start);
+	gtk_text_buffer_move_mark_by_name (buffer, "insert", &iter_match_end);
+	
+	return TRUE;
+}
+
+static gboolean
+chat_text_view_find_next (EmpathyChatView *view,
+			    const gchar     *search_criteria,
+			    gboolean         new_search)
+{
+	EmpathyChatTextViewPriv *priv;
+	GtkTextBuffer      *buffer;
+	GtkTextIter         iter_at_mark;
+	GtkTextIter         iter_match_start;
+	GtkTextIter         iter_match_end;
+	gboolean            found;
+	gboolean            from_start = FALSE;
+	
+	g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), FALSE);
+	g_return_val_if_fail (search_criteria != NULL, FALSE);
+	
+	priv = GET_PRIV (view);
+	
+	buffer = priv->buffer;
+	
+	if (G_STR_EMPTY (search_criteria)) {
+		if (priv->find_mark_next) {
+			gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
+			
+			gtk_text_buffer_move_mark (buffer,
+						   priv->find_mark_next,
+						   &iter_at_mark);
+			gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
+						      priv->find_mark_next,
+						      0.0,
+						      TRUE,
+						      0.0,
+						      0.0);
+			gtk_text_buffer_select_range (buffer,
+						      &iter_at_mark,
+						      &iter_at_mark);
+		}
+		
+		return FALSE;
+	}
+	
+	if (new_search) {
+		from_start = TRUE;
+	}
+	
+	if (priv->find_mark_next) {
+		gtk_text_buffer_get_iter_at_mark (buffer,
+						  &iter_at_mark,
+						  priv->find_mark_next);
+	} else {
+		gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
+		from_start = TRUE;
+	}
+	
+	priv->find_last_direction = TRUE;
+	
+	found = empathy_text_iter_forward_search (&iter_at_mark,
+						  search_criteria,
+						  &iter_match_start,
+						  &iter_match_end,
+						  NULL);
+	
+	if (!found) {
+		gboolean result = FALSE;
+		
+		if (from_start) {
+			return result;
+		}
+		
+		/* Here we wrap around. */
+		if (!new_search && !priv->find_wrapped) {
+			priv->find_wrapped = TRUE;
+			result = chat_text_view_find_next (view, 
+							     search_criteria, 
+							     FALSE);
+			priv->find_wrapped = FALSE;
+		}
+		
+		return result;
+	}
+	
+	/* Set new mark and show on screen */
+	if (!priv->find_mark_next) {
+		priv->find_mark_next = gtk_text_buffer_create_mark (buffer, NULL,
+								    &iter_match_end,
+								    TRUE);
+	} else {
+		gtk_text_buffer_move_mark (buffer,
+					   priv->find_mark_next,
+					   &iter_match_end);
+	}
+	
+	if (!priv->find_mark_previous) {
+		priv->find_mark_previous = gtk_text_buffer_create_mark (buffer, NULL,
+									&iter_match_start,
+									TRUE);
+	} else {
+		gtk_text_buffer_move_mark (buffer,
+					   priv->find_mark_previous,
+					   &iter_match_start);
+	}
+	
+	gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
+				      priv->find_mark_next,
+				      0.0,
+				      TRUE,
+				      0.5,
+				      0.5);
+	
+	gtk_text_buffer_move_mark_by_name (buffer, "selection_bound", &iter_match_start);
+	gtk_text_buffer_move_mark_by_name (buffer, "insert", &iter_match_end);
+	
+	return TRUE;
+}
+
+static void
+chat_text_view_find_abilities (EmpathyChatView *view,
+				 const gchar    *search_criteria,
+				 gboolean       *can_do_previous,
+				 gboolean       *can_do_next)
+{
+	EmpathyChatTextViewPriv *priv;
+	GtkTextBuffer      *buffer;
+	GtkTextIter         iter_at_mark;
+	GtkTextIter         iter_match_start;
+	GtkTextIter         iter_match_end;
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	g_return_if_fail (search_criteria != NULL);
+	g_return_if_fail (can_do_previous != NULL && can_do_next != NULL);
+	
+	priv = GET_PRIV (view);
+	
+	buffer = priv->buffer;
+	
+	if (can_do_previous) {
+		if (priv->find_mark_previous) {
+			gtk_text_buffer_get_iter_at_mark (buffer,
+							  &iter_at_mark,
+							  priv->find_mark_previous);
+		} else {
+			gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
+		}
+		
+		*can_do_previous = empathy_text_iter_backward_search (&iter_at_mark,
+								      search_criteria,
+								      &iter_match_start,
+								      &iter_match_end,
+								      NULL);
+	}
+	
+	if (can_do_next) {
+		if (priv->find_mark_next) {
+			gtk_text_buffer_get_iter_at_mark (buffer,
+							  &iter_at_mark,
+							  priv->find_mark_next);
+		} else {
+			gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
+		}
+		
+		*can_do_next = empathy_text_iter_forward_search (&iter_at_mark,
+								 search_criteria,
+								 &iter_match_start,
+								 &iter_match_end,
+								 NULL);
+	}
+}
+
+static void
+chat_text_view_highlight (EmpathyChatView *view,
+			    const gchar     *text)
+{
+	GtkTextBuffer *buffer;
+	GtkTextIter    iter;
+	GtkTextIter    iter_start;
+	GtkTextIter    iter_end;
+	GtkTextIter    iter_match_start;
+	GtkTextIter    iter_match_end;
+	gboolean       found;
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	
+	buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
+	
+	gtk_text_buffer_get_start_iter (buffer, &iter);
+	
+	gtk_text_buffer_get_bounds (buffer, &iter_start, &iter_end);
+	gtk_text_buffer_remove_tag_by_name (buffer, "highlight",
+					    &iter_start,
+					    &iter_end);
+	
+	if (G_STR_EMPTY (text)) {
+		return;
+	}
+	
+	while (1) {
+		found = empathy_text_iter_forward_search (&iter,
+							  text,
+							  &iter_match_start,
+							  &iter_match_end,
+							  NULL);
+		
+		if (!found) {
+			break;
+		}
+		
+		gtk_text_buffer_apply_tag_by_name (buffer, "highlight",
+						   &iter_match_start,
+						   &iter_match_end);
+		
+		iter = iter_match_end;
+		gtk_text_iter_forward_char (&iter);
+	}
+}
+
+static void
+chat_text_view_copy_clipboard (EmpathyChatView *view)
+{
+	GtkTextBuffer *buffer;
+	GtkClipboard  *clipboard;
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	
+	buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
+	clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
+	
+	gtk_text_buffer_copy_clipboard (buffer, clipboard);
+}
+
+static EmpathyTheme *
+chat_text_view_get_theme (EmpathyChatView *view)
+{
+	EmpathyChatTextViewPriv *priv;
+	
+	g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), NULL);
+	
+	priv = GET_PRIV (view);
+	
+	return priv->theme;
+}
+
+static void
+chat_text_view_set_theme (EmpathyChatView *view, EmpathyTheme *theme)
+{
+	EmpathyChatTextViewPriv *priv;
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	g_return_if_fail (EMPATHY_IS_THEME (theme));
+	
+	priv = GET_PRIV (view);
+	
+	if (priv->theme) {
+		g_signal_handlers_disconnect_by_func (priv->theme,
+						      chat_text_view_theme_notify_cb,
+						      EMPATHY_CHAT_TEXT_VIEW (view));
+		g_object_unref (priv->theme);
+	}
+	
+	priv->theme = g_object_ref (theme);
+	
+	empathy_theme_update_view (theme, view);
+	g_signal_connect (priv->theme, "notify",
+			  G_CALLBACK (chat_text_view_theme_notify_cb),
+			  EMPATHY_CHAT_TEXT_VIEW (view));
+	
+	/* FIXME: Redraw all messages using the new theme */
+}
+
+static void
+chat_text_view_set_margin (EmpathyChatView *view,
+			     gint             margin)
+{
+	EmpathyChatTextViewPriv *priv;
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	
+	priv = GET_PRIV (view);
+	
+	g_object_set (view,
+		      "left-margin", margin,
+		      "right-margin", margin,
+		      NULL);
+}
+
+static time_t
+chat_text_view_get_last_timestamp (EmpathyChatView *view)
+{
+	EmpathyChatTextViewPriv *priv;
+	
+	g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), 0);
+	
+	priv = GET_PRIV (view);
+	
+	return priv->last_timestamp;
+}
+
+static void
+chat_text_view_set_last_timestamp (EmpathyChatView *view,
+				     time_t           timestamp)
+{
+	EmpathyChatTextViewPriv *priv;
+	
+	g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
+	
+	priv = GET_PRIV (view);
+	
+	priv->last_timestamp = timestamp;
+}
+
+static EmpathyContact *
+chat_text_view_get_last_contact (EmpathyChatView *view)
+{
+	EmpathyChatTextViewPriv *priv;
+	
+	g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), NULL);
+	
+	priv = GET_PRIV (view);
+	
+	return priv->last_contact;
+}
+
+static void
+chat_text_view_iface_init (EmpathyChatViewIface *iface)
+{
+	iface->append_message = chat_text_view_append_message;
+	iface->append_event = chat_text_view_append_event;
+	iface->set_margin = chat_text_view_set_margin;
+	iface->scroll = chat_text_view_scroll;
+	iface->scroll_down = chat_text_view_scroll_down;
+	iface->get_has_selection = chat_text_view_get_has_selection;
+	iface->clear = chat_text_view_clear;
+	iface->find_previous = chat_text_view_find_previous;
+	iface->find_next = chat_text_view_find_next;
+	iface->find_abilities = chat_text_view_find_abilities;
+	iface->highlight = chat_text_view_highlight;
+	iface->copy_clipboard = chat_text_view_copy_clipboard;
+	iface->get_theme = chat_text_view_get_theme;
+	iface->set_theme = chat_text_view_set_theme;
+	iface->get_last_timestamp = chat_text_view_get_last_timestamp;
+	iface->set_last_timestamp = chat_text_view_set_last_timestamp;
+	iface->get_last_contact = chat_text_view_get_last_contact;
+}
+