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path: root/libempathy-gtk/empathy-chat-window.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2003-2007 Imendio AB
 * Copyright (C) 2007 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>
 *          Geert-Jan Van den Bogaerde <geertjan@gnome.org>
 *          Xavier Claessens <xclaesse@gmail.com>
 */

#include "config.h"

#include <string.h>

#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <glade/glade.h>
#include <glib/gi18n.h>

#include <libmissioncontrol/mission-control.h>

#include <libempathy/empathy-contact-factory.h>
#include <libempathy/empathy-contact-list.h>
#include <libempathy/empathy-log-manager.h>
#include <libempathy/empathy-chatroom-manager.h>
#include <libempathy/empathy-contact.h>
#include <libempathy/empathy-debug.h>
#include <libempathy/empathy-message.h>
#include <libempathy/empathy-utils.h>

#include "empathy-chat-window.h"
#include "empathy-images.h"
//#include "empathy-chat-invite.h"
#include "empathy-contact-dialogs.h"
#include "empathy-log-window.h"
#include "empathy-new-chatroom-dialog.h"
#include "empathy-conf.h"
#include "empathy-preferences.h"
#include "empathy-private-chat.h"
#include "empathy-group-chat.h"
//#include "empathy-sound.h"
#include "empathy-ui-utils.h"
#include "empathy-about-dialog.h"

#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_TYPE_CHAT_WINDOW, EmpathyChatWindowPriv))

#define DEBUG_DOMAIN "ChatWindow"

struct _EmpathyChatWindowPriv {
    EmpathyChatroomManager *chatroom_manager;
    GList                 *chats;
    GList                 *chats_new_msg;
    GList                 *chats_composing;

    EmpathyChat            *current_chat;

    gboolean               page_added;
    gboolean               dnd_same_window;

    GtkWidget             *dialog;
    GtkWidget             *notebook;

    /* Menu items. */
    GtkWidget             *menu_conv_clear;
    GtkWidget             *menu_conv_insert_smiley;
    GtkWidget             *menu_conv_call;
    GtkWidget             *menu_conv_call_separator;
    GtkWidget             *menu_conv_log;
    GtkWidget             *menu_conv_separator;
    GtkWidget             *menu_conv_add_contact;
    GtkWidget             *menu_conv_info;
    GtkWidget             *menu_conv_close;

    GtkWidget             *menu_room;
    GtkWidget             *menu_room_set_topic;
    GtkWidget             *menu_room_join_new;
    GtkWidget             *menu_room_invite;
    GtkWidget             *menu_room_add;
    GtkWidget             *menu_room_show_contacts;

    GtkWidget             *menu_edit_cut;
    GtkWidget             *menu_edit_copy;
    GtkWidget             *menu_edit_paste;

    GtkWidget             *menu_tabs_next;
    GtkWidget             *menu_tabs_prev;
    GtkWidget             *menu_tabs_left;
    GtkWidget             *menu_tabs_right;
    GtkWidget             *menu_tabs_detach;
    
    GtkWidget             *menu_help_contents;
    GtkWidget             *menu_help_about;

    guint                  save_geometry_id;
};

static void       empathy_chat_window_class_init         (EmpathyChatWindowClass *klass);
static void       empathy_chat_window_init               (EmpathyChatWindow      *window);
static void       empathy_chat_window_finalize           (GObject               *object);
static void       chat_window_accel_cb                  (GtkAccelGroup         *accelgroup,
                             GObject               *object,
                             guint                  key,
                             GdkModifierType        mod,
                             EmpathyChatWindow      *window);
static void       chat_window_close_clicked_cb          (GtkWidget             *button,
                             EmpathyChat            *chat);
static GtkWidget *chat_window_create_label              (EmpathyChatWindow      *window,
                             EmpathyChat            *chat);
static void       chat_window_update_status             (EmpathyChatWindow      *window,
                             EmpathyChat            *chat);
static void       chat_window_update_title              (EmpathyChatWindow      *window,
                             EmpathyChat            *chat);
static void       chat_window_update_menu               (EmpathyChatWindow      *window);
static gboolean   chat_window_save_geometry_timeout_cb  (EmpathyChatWindow      *window);
static gboolean   chat_window_configure_event_cb        (GtkWidget             *widget,
                             GdkEventConfigure     *event,
                             EmpathyChatWindow      *window);
static void       chat_window_conv_activate_cb          (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_clear_activate_cb         (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_info_activate_cb          (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_add_contact_activate_cb   (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_call_activate_cb          (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_log_activate_cb           (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_show_contacts_toggled_cb  (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_edit_activate_cb          (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_insert_smiley_activate_cb (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_close_activate_cb         (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_room_set_topic_activate_cb(GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_room_join_new_activate_cb (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_room_invite_activate_cb   (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_room_add_activate_cb      (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_cut_activate_cb           (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_copy_activate_cb          (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_paste_activate_cb         (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_tabs_left_activate_cb     (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_tabs_right_activate_cb    (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_detach_activate_cb        (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_help_contents_cb          (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static void       chat_window_help_about_cb             (GtkWidget             *menuitem,
                             EmpathyChatWindow      *window);
static gboolean   chat_window_delete_event_cb           (GtkWidget             *dialog,
                             GdkEvent              *event,
                             EmpathyChatWindow      *window);
static void       chat_window_status_changed_cb         (EmpathyChat            *chat,
                             EmpathyChatWindow      *window);
static void       chat_window_update_tooltip            (EmpathyChatWindow      *window,
                             EmpathyChat            *chat);
static void       chat_window_name_changed_cb           (EmpathyChat            *chat,
                             const gchar           *name,
                             EmpathyChatWindow      *window);
static void       chat_window_composing_cb              (EmpathyChat            *chat,
                             gboolean               is_composing,
                             EmpathyChatWindow      *window);
static void       chat_window_new_message_cb            (EmpathyChat            *chat,
                             EmpathyMessage         *message,
                             gboolean               is_backlog,
                             EmpathyChatWindow      *window);
static GtkNotebook* chat_window_detach_hook             (GtkNotebook           *source,
                             GtkWidget             *page,
                             gint                   x,
                             gint                   y,
                             gpointer               user_data);
static void       chat_window_page_switched_cb          (GtkNotebook           *notebook,
                             GtkNotebookPage       *page,
                             gint                   page_num,
                             EmpathyChatWindow      *window);
static void       chat_window_page_reordered_cb         (GtkNotebook           *notebook,
                             GtkWidget             *widget,
                             guint                  page_num,
                             EmpathyChatWindow      *window);
static void       chat_window_page_added_cb             (GtkNotebook           *notebook,
                             GtkWidget             *child,
                             guint                  page_num,
                             EmpathyChatWindow      *window);
static void       chat_window_page_removed_cb           (GtkNotebook           *notebook,
                             GtkWidget             *child,
                             guint                  page_num,
                             EmpathyChatWindow      *window);
static gboolean   chat_window_focus_in_event_cb         (GtkWidget             *widget,
                             GdkEvent              *event,
                             EmpathyChatWindow      *window);
static void       chat_window_drag_data_received        (GtkWidget             *widget,
                             GdkDragContext        *context,
                             int                    x,
                             int                    y,
                             GtkSelectionData      *selection,
                             guint                  info,
                             guint                  time,
                             EmpathyChatWindow      *window);
static void       chat_window_set_urgency_hint          (EmpathyChatWindow      *window,
                             gboolean               urgent);


static GList *chat_windows = NULL;

static const guint tab_accel_keys[] = {
    GDK_1, GDK_2, GDK_3, GDK_4, GDK_5,
    GDK_6, GDK_7, GDK_8, GDK_9, GDK_0
};

typedef enum {
    DND_DRAG_TYPE_CONTACT_ID,
    DND_DRAG_TYPE_TAB
} DndDragType;

static const GtkTargetEntry drag_types_dest[] = {
    { "text/contact-id", 0, DND_DRAG_TYPE_CONTACT_ID },
    { "GTK_NOTEBOOK_TAB", GTK_TARGET_SAME_APP, DND_DRAG_TYPE_TAB },
};

G_DEFINE_TYPE (EmpathyChatWindow, empathy_chat_window, G_TYPE_OBJECT);

static void
empathy_chat_window_class_init (EmpathyChatWindowClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = empathy_chat_window_finalize;

    g_type_class_add_private (object_class, sizeof (EmpathyChatWindowPriv));

    /* Set up a style for the close button with no focus padding. */
    gtk_rc_parse_string (
        "style \"empathy-close-button-style\"\n"
        "{\n"
        "  GtkWidget::focus-padding = 0\n"
        "  xthickness = 0\n"
        "  ythickness = 0\n"
        "}\n"
        "widget \"*.empathy-close-button\" style \"empathy-close-button-style\"");

    gtk_notebook_set_window_creation_hook (chat_window_detach_hook, NULL, NULL);
}

static void
empathy_chat_window_init (EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    GladeXML             *glade;
    GtkAccelGroup        *accel_group;
    GtkWidget            *image;
    GClosure             *closure;
    GtkWidget            *menu_conv;
    GtkWidget            *menu;
    gint                  i;
    GtkWidget            *chat_vbox;

    priv = GET_PRIV (window);

    glade = empathy_glade_get_file ("empathy-chat.glade",
                       "chat_window",
                       NULL,
                       "chat_window", &priv->dialog,
                       "chat_vbox", &chat_vbox,
                       "menu_conv", &menu_conv,
                       "menu_conv_clear", &priv->menu_conv_clear,
                       "menu_conv_insert_smiley", &priv->menu_conv_insert_smiley,
                       "menu_conv_call", &priv->menu_conv_call,
                       "menu_conv_call_separator", &priv->menu_conv_call_separator,
                       "menu_conv_log", &priv->menu_conv_log,
                       "menu_conv_separator", &priv->menu_conv_separator,
                       "menu_conv_add_contact", &priv->menu_conv_add_contact,
                       "menu_conv_info", &priv->menu_conv_info,
                       "menu_conv_close", &priv->menu_conv_close,
                       "menu_room", &priv->menu_room,
                       "menu_room_set_topic", &priv->menu_room_set_topic,
                       "menu_room_join_new", &priv->menu_room_join_new,
                       "menu_room_invite", &priv->menu_room_invite,
                       "menu_room_add", &priv->menu_room_add,
                       "menu_room_show_contacts", &priv->menu_room_show_contacts,
                       "menu_edit_cut", &priv->menu_edit_cut,
                       "menu_edit_copy", &priv->menu_edit_copy,
                       "menu_edit_paste", &priv->menu_edit_paste,
                       "menu_tabs_next", &priv->menu_tabs_next,
                       "menu_tabs_prev", &priv->menu_tabs_prev,
                       "menu_tabs_left", &priv->menu_tabs_left,
                       "menu_tabs_right", &priv->menu_tabs_right,
                       "menu_tabs_detach", &priv->menu_tabs_detach,
                       "menu_help_contents", &priv->menu_help_contents,
                       "menu_help_about", &priv->menu_help_about,
                       NULL);

    empathy_glade_connect (glade,
                  window,
                  "chat_window", "configure-event", chat_window_configure_event_cb,
                  "menu_conv", "activate", chat_window_conv_activate_cb,
                  "menu_conv_clear", "activate", chat_window_clear_activate_cb,
                  "menu_conv_call", "activate", chat_window_call_activate_cb,
                  "menu_conv_log", "activate", chat_window_log_activate_cb,
                  "menu_conv_add_contact", "activate", chat_window_add_contact_activate_cb,
                  "menu_conv_info", "activate", chat_window_info_activate_cb,
                  "menu_conv_close", "activate", chat_window_close_activate_cb,
                  "menu_room_set_topic", "activate", chat_window_room_set_topic_activate_cb,
                  "menu_room_join_new", "activate", chat_window_room_join_new_activate_cb,
                  "menu_room_invite", "activate", chat_window_room_invite_activate_cb,
                  "menu_room_add", "activate", chat_window_room_add_activate_cb,
                  "menu_edit", "activate", chat_window_edit_activate_cb,
                  "menu_edit_cut", "activate", chat_window_cut_activate_cb,
                  "menu_edit_copy", "activate", chat_window_copy_activate_cb,
                  "menu_edit_paste", "activate", chat_window_paste_activate_cb,
                  "menu_tabs_left", "activate", chat_window_tabs_left_activate_cb,
                  "menu_tabs_right", "activate", chat_window_tabs_right_activate_cb,
                  "menu_tabs_detach", "activate", chat_window_detach_activate_cb,
                  "menu_help_contents", "activate", chat_window_help_contents_cb,
                  "menu_help_about", "activate", chat_window_help_about_cb,
                  NULL);

    g_object_unref (glade);

    /* Set up chatroom manager */
    priv->chatroom_manager = empathy_chatroom_manager_new ();
    g_signal_connect_swapped (priv->chatroom_manager, "chatroom-added",
                  G_CALLBACK (chat_window_update_menu),
                  window);
    g_signal_connect_swapped (priv->chatroom_manager, "chatroom-removed",
                  G_CALLBACK (chat_window_update_menu),
                  window);

    priv->notebook = gtk_notebook_new ();
    gtk_notebook_set_group (GTK_NOTEBOOK (priv->notebook), "EmpathyChatWindow"); 
    gtk_box_pack_start (GTK_BOX (chat_vbox), priv->notebook, TRUE, TRUE, 0);
    gtk_widget_show (priv->notebook);

    /* Set up accels */
    accel_group = gtk_accel_group_new ();
    gtk_window_add_accel_group (GTK_WINDOW (priv->dialog), accel_group);

    for (i = 0; i < G_N_ELEMENTS (tab_accel_keys); i++) {
        closure =  g_cclosure_new (G_CALLBACK (chat_window_accel_cb),
                       window,
                       NULL);
        gtk_accel_group_connect (accel_group,
                     tab_accel_keys[i],
                     GDK_MOD1_MASK,
                     0,
                     closure);
    }

    g_object_unref (accel_group);

    /* Set the contact information menu item image to the Empathy
     * stock image
     */
    image = gtk_image_menu_item_get_image (GTK_IMAGE_MENU_ITEM (priv->menu_conv_info));
    gtk_image_set_from_icon_name (GTK_IMAGE (image),
                      EMPATHY_IMAGE_CONTACT_INFORMATION,
                      GTK_ICON_SIZE_MENU);

    /* Set up smiley menu */
    menu = empathy_chat_view_get_smiley_menu (
        G_CALLBACK (chat_window_insert_smiley_activate_cb),
        window);
    gtk_menu_item_set_submenu (GTK_MENU_ITEM (priv->menu_conv_insert_smiley), menu);

    /* Set up signals we can't do with glade since we may need to
     * block/unblock them at some later stage.
     */

    g_signal_connect (priv->dialog,
              "delete_event",
              G_CALLBACK (chat_window_delete_event_cb),
              window);

    g_signal_connect (priv->menu_room_show_contacts,
              "toggled",
              G_CALLBACK (chat_window_show_contacts_toggled_cb),
              window);

    g_signal_connect_swapped (priv->menu_tabs_prev,
                  "activate",
                  G_CALLBACK (gtk_notebook_prev_page),
                  priv->notebook);
    g_signal_connect_swapped (priv->menu_tabs_next,
                  "activate",
                  G_CALLBACK (gtk_notebook_next_page),
                  priv->notebook);

    g_signal_connect (priv->dialog,
              "focus_in_event",
              G_CALLBACK (chat_window_focus_in_event_cb),
              window);
    g_signal_connect_after (priv->notebook,
                "switch_page",
                G_CALLBACK (chat_window_page_switched_cb),
                window);
    g_signal_connect (priv->notebook,
              "page_reordered",
              G_CALLBACK (chat_window_page_reordered_cb),
              window);
    g_signal_connect (priv->notebook,
              "page_added",
              G_CALLBACK (chat_window_page_added_cb),
              window);
    g_signal_connect (priv->notebook,
              "page_removed",
              G_CALLBACK (chat_window_page_removed_cb),
              window);

    /* Set up drag and drop */
    gtk_drag_dest_set (GTK_WIDGET (priv->notebook),
               GTK_DEST_DEFAULT_ALL,
               drag_types_dest,
               G_N_ELEMENTS (drag_types_dest),
               GDK_ACTION_MOVE);

    g_signal_connect (priv->notebook,
              "drag-data-received",
              G_CALLBACK (chat_window_drag_data_received),
              window);

    chat_windows = g_list_prepend (chat_windows, window);

    /* Set up private details */
    priv->chats = NULL;
    priv->chats_new_msg = NULL;
    priv->chats_composing = NULL;
    priv->current_chat = NULL;
}

/* Returns the window to open a new tab in if there is only one window
 * visble, otherwise, returns NULL indicating that a new window should
 * be added.
 */
EmpathyChatWindow *
empathy_chat_window_get_default (void)
{
    GList    *l;
    gboolean  separate_windows = TRUE;

    empathy_conf_get_bool (empathy_conf_get (),
                  EMPATHY_PREFS_UI_SEPARATE_CHAT_WINDOWS,
                  &separate_windows);

    if (separate_windows) {
        /* Always create a new window */
        return NULL;
    }

    for (l = chat_windows; l; l = l->next) {
        EmpathyChatWindow *chat_window;
        GtkWidget         *dialog;

        chat_window = l->data;

        dialog = empathy_chat_window_get_dialog (chat_window);
        if (empathy_window_get_is_visible (GTK_WINDOW (GTK_WINDOW (dialog)))) {
            /* Found a visible window on this desktop */
            return chat_window;
        }
    }

    return NULL;
}

static void
empathy_chat_window_finalize (GObject *object)
{
    EmpathyChatWindow     *window;
    EmpathyChatWindowPriv *priv;

    window = EMPATHY_CHAT_WINDOW (object);
    priv = GET_PRIV (window);

    empathy_debug (DEBUG_DOMAIN, "Finalized: %p", object);

    if (priv->save_geometry_id != 0) {
        g_source_remove (priv->save_geometry_id);
    }

    chat_windows = g_list_remove (chat_windows, window);
    gtk_widget_destroy (priv->dialog);

    g_signal_handlers_disconnect_by_func (priv->chatroom_manager,
                          chat_window_update_menu,
                          window);
    g_object_unref (priv->chatroom_manager);

    G_OBJECT_CLASS (empathy_chat_window_parent_class)->finalize (object);
}

static void
chat_window_accel_cb (GtkAccelGroup    *accelgroup,
              GObject          *object,
              guint             key,
              GdkModifierType   mod,
              EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    gint                  num = -1;
    gint                  i;

    priv = GET_PRIV (window);

    for (i = 0; i < G_N_ELEMENTS (tab_accel_keys); i++) {
        if (tab_accel_keys[i] == key) {
            num = i;
            break;
        }
    }

    if (num != -1) {
        gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->notebook), num);
    }
}

static void
chat_window_close_clicked_cb (GtkWidget  *button,
                  EmpathyChat *chat)
{
    EmpathyChatWindow *window;

    window = empathy_chat_get_window (chat);
    empathy_chat_window_remove_chat (window, chat);
}

static void
chat_window_close_button_style_set_cb (GtkWidget *button,
                       GtkStyle  *previous_style,
                       gpointer   user_data)
{
    gint h, w;

    gtk_icon_size_lookup_for_settings (gtk_widget_get_settings (button),
                       GTK_ICON_SIZE_MENU, &w, &h);

    gtk_widget_set_size_request (button, w, h);
}

static GtkWidget *
chat_window_create_label (EmpathyChatWindow *window,
              EmpathyChat       *chat)
{
    EmpathyChatWindowPriv *priv;
    GtkWidget            *hbox;
    GtkWidget            *name_label;
    GtkWidget            *status_image;
    GtkWidget            *close_button;
    GtkWidget            *close_image;
    GtkWidget            *event_box;
    GtkWidget            *event_box_hbox;
    PangoAttrList        *attr_list;
    PangoAttribute       *attr;

    priv = GET_PRIV (window);

    /* The spacing between the button and the label. */
    hbox = gtk_hbox_new (FALSE, 0);

    event_box = gtk_event_box_new ();
    gtk_event_box_set_visible_window (GTK_EVENT_BOX (event_box), FALSE);

    name_label = gtk_label_new (empathy_chat_get_name (chat));
    gtk_label_set_ellipsize (GTK_LABEL (name_label), PANGO_ELLIPSIZE_END);

    attr_list = pango_attr_list_new ();
    attr = pango_attr_scale_new (1/1.2);
    attr->start_index = 0;
    attr->end_index = -1;
    pango_attr_list_insert (attr_list, attr);
    gtk_label_set_attributes (GTK_LABEL (name_label), attr_list);
    pango_attr_list_unref (attr_list);

    gtk_misc_set_padding (GTK_MISC (name_label), 2, 0);
    gtk_misc_set_alignment (GTK_MISC (name_label), 0.0, 0.5);
    g_object_set_data (G_OBJECT (chat), "chat-window-tab-label", name_label);

    status_image = gtk_image_new ();

    /* Spacing between the icon and label. */
    event_box_hbox = gtk_hbox_new (FALSE, 0);

    gtk_box_pack_start (GTK_BOX (event_box_hbox), status_image, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (event_box_hbox), name_label, TRUE, TRUE, 0);

    g_object_set_data (G_OBJECT (chat), "chat-window-tab-image", status_image);
    g_object_set_data (G_OBJECT (chat), "chat-window-tab-tooltip-widget", event_box);

    close_button = gtk_button_new ();
    gtk_button_set_relief (GTK_BUTTON (close_button), GTK_RELIEF_NONE);

    /* We don't want focus/keynav for the button to avoid clutter, and
     * Ctrl-W works anyway.
     */
    GTK_WIDGET_UNSET_FLAGS (close_button, GTK_CAN_FOCUS);
    GTK_WIDGET_UNSET_FLAGS (close_button, GTK_CAN_DEFAULT);

    /* Set the name to make the special rc style match. */
    gtk_widget_set_name (close_button, "empathy-close-button");

    close_image = gtk_image_new_from_stock (GTK_STOCK_CLOSE, GTK_ICON_SIZE_MENU);

    gtk_container_add (GTK_CONTAINER (close_button), close_image);

    gtk_container_add (GTK_CONTAINER (event_box), event_box_hbox);
    gtk_box_pack_start (GTK_BOX (hbox), event_box, TRUE, TRUE, 0);
    gtk_box_pack_end (GTK_BOX (hbox), close_button, FALSE, FALSE, 0);

    /* React to theme changes and also used to setup the initial size
     * correctly.
     */
    g_signal_connect (close_button,
              "style-set",
              G_CALLBACK (chat_window_close_button_style_set_cb),
              chat);

    g_signal_connect (close_button,
              "clicked",
              G_CALLBACK (chat_window_close_clicked_cb),
              chat);

    /* Set up tooltip */
    chat_window_update_tooltip (window, chat);

    gtk_widget_show_all (hbox);

    return hbox;
}

static void
chat_window_update_status (EmpathyChatWindow *window,
               EmpathyChat       *chat)
{
    EmpathyChatWindowPriv *priv;
    GtkImage             *image;
    const gchar          *icon_name = NULL;

    priv = GET_PRIV (window);

    if (g_list_find (priv->chats_new_msg, chat)) {
        icon_name = EMPATHY_IMAGE_MESSAGE;
    }
    else if (g_list_find (priv->chats_composing, chat)) {
        icon_name = EMPATHY_IMAGE_TYPING;
    }
    else {
        icon_name = empathy_chat_get_status_icon_name (chat);
    }
    image = g_object_get_data (G_OBJECT (chat), "chat-window-tab-image");
    gtk_image_set_from_icon_name (image, icon_name, GTK_ICON_SIZE_MENU);

    chat_window_update_title (window, chat);
    chat_window_update_tooltip (window, chat);
}

static void
chat_window_update_title (EmpathyChatWindow *window,
              EmpathyChat       *chat)
{
    EmpathyChatWindowPriv *priv;
    gint                   n_chats;
    
    priv = GET_PRIV (window);
    
    n_chats = g_list_length (priv->chats);
    if (n_chats == 1) {
        gtk_window_set_title (GTK_WINDOW (priv->dialog),
                      empathy_chat_get_name (priv->current_chat));
    } else {
        gchar *title;

        title = g_strdup_printf (_("Conversations (%d)"), n_chats);
        gtk_window_set_title (GTK_WINDOW (priv->dialog), title);
        g_free (title);
    }

    if (priv->chats_new_msg) {
        gtk_window_set_icon_name (GTK_WINDOW (priv->dialog),
                      EMPATHY_IMAGE_MESSAGE);
    } else {
        gtk_window_set_icon_name (GTK_WINDOW (priv->dialog), NULL);
    }
}

static void
chat_window_update_menu (EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    gboolean              first_page;
    gboolean              last_page;
    gboolean              is_connected;
    gint                  num_pages;
    gint                  page_num;

    priv = GET_PRIV (window);

    /* Notebook pages */
    page_num = gtk_notebook_get_current_page (GTK_NOTEBOOK (priv->notebook));
    num_pages = gtk_notebook_get_n_pages (GTK_NOTEBOOK (priv->notebook));
    first_page = (page_num == 0);
    last_page = (page_num == (num_pages - 1));

    gtk_widget_set_sensitive (priv->menu_tabs_next, !last_page);
    gtk_widget_set_sensitive (priv->menu_tabs_prev, !first_page);
    gtk_widget_set_sensitive (priv->menu_tabs_detach, num_pages > 1);
    gtk_widget_set_sensitive (priv->menu_tabs_left, !first_page);
    gtk_widget_set_sensitive (priv->menu_tabs_right, !last_page);

    is_connected = empathy_chat_is_connected (priv->current_chat);

    if (empathy_chat_is_group_chat (priv->current_chat)) {
        EmpathyGroupChat *group_chat;
        EmpathyChatroom  *chatroom;
        gboolean         show_contacts;

        group_chat = EMPATHY_GROUP_CHAT (priv->current_chat);

        /* Show / Hide widgets */
        gtk_widget_show (priv->menu_room);

        gtk_widget_hide (priv->menu_conv_add_contact);
        gtk_widget_hide (priv->menu_conv_info);
        gtk_widget_hide (priv->menu_conv_separator);

        /* Can we add this room to our favourites and are we
         * connected to the room?
         */
        chatroom = empathy_chatroom_manager_find (priv->chatroom_manager,
                              empathy_chat_get_account (priv->current_chat),
                              empathy_chat_get_id (priv->current_chat));

        gtk_widget_set_sensitive (priv->menu_room_add, chatroom == NULL);
        gtk_widget_set_sensitive (priv->menu_conv_insert_smiley, is_connected);
        gtk_widget_set_sensitive (priv->menu_room_join_new, is_connected);
        gtk_widget_set_sensitive (priv->menu_room_invite, is_connected);

        /* We need to block the signal here because all we are
         * really trying to do is check or uncheck the menu
         * item. If we don't do this we get funny behaviour
         * with 2 or more group chat windows where showing
         * contacts doesn't do anything.
         */
        show_contacts = empathy_group_chat_get_show_contacts (group_chat);

        g_signal_handlers_block_by_func (priv->menu_room_show_contacts,
                         chat_window_show_contacts_toggled_cb,
                         window);

        g_object_set (priv->menu_room_show_contacts,
                  "active", show_contacts,
                  NULL);

        g_signal_handlers_unblock_by_func (priv->menu_room_show_contacts,
                           chat_window_show_contacts_toggled_cb,
                           window);
    } else {
        EmpathyPrivateChat *chat;
        EmpathyContact     *contact;
        McPresence          presence;

        chat = EMPATHY_PRIVATE_CHAT (priv->current_chat);

        /* Show / Hide widgets */
        gtk_widget_hide (priv->menu_room);

        /* Unset presence means this contact refuses to send us his
         * presence. By adding the contact we ask the contact to accept
         * to send his presence. */
        contact = empathy_private_chat_get_contact (chat);
        presence = empathy_contact_get_presence (contact);
        if (presence == MC_PRESENCE_UNSET) {
            gtk_widget_show (priv->menu_conv_add_contact);
        } else {
            gtk_widget_hide (priv->menu_conv_add_contact);
        }

        gtk_widget_show (priv->menu_conv_separator);
        gtk_widget_show (priv->menu_conv_info);

        /* Are we connected? */
        gtk_widget_set_sensitive (priv->menu_conv_insert_smiley, is_connected);
        gtk_widget_set_sensitive (priv->menu_conv_add_contact, is_connected);
        gtk_widget_set_sensitive (priv->menu_conv_info, is_connected);
    }
}

static void
chat_window_insert_smiley_activate_cb (GtkWidget         *menuitem,
                       EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    EmpathyChat           *chat;
    GtkTextBuffer        *buffer;
    GtkTextIter           iter;
    const gchar          *smiley;

    priv = GET_PRIV (window);

    chat = priv->current_chat;

    smiley = g_object_get_data (G_OBJECT (menuitem), "smiley_text");

    buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
    gtk_text_buffer_get_end_iter (buffer, &iter);
    gtk_text_buffer_insert (buffer, &iter,
                smiley, -1);
}

static void
chat_window_clear_activate_cb (GtkWidget        *menuitem,
                   EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    priv = GET_PRIV (window);

    empathy_chat_clear (priv->current_chat);
}

static void
chat_window_add_contact_activate_cb (GtkWidget        *menuitem,
                     EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    //EmpathyContact        *contact;

    priv = GET_PRIV (window);

    //contact = empathy_chat_get_contact (priv->current_chat);

    // FIXME: empathy_add_contact_dialog_show (NULL, contact);
}

static void
chat_window_call_activate_cb (GtkWidget         *menuitem,
                  EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    priv = GET_PRIV (window);

    if (!empathy_chat_is_group_chat (priv->current_chat)) {
        EmpathyPrivateChat *chat;
        EmpathyContact     *contact;

        chat = EMPATHY_PRIVATE_CHAT (priv->current_chat);
        contact = empathy_private_chat_get_contact (chat);

        empathy_call_with_contact (contact);
    }
}

static void
chat_window_log_activate_cb (GtkWidget        *menuitem,
                 EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    priv = GET_PRIV (window);

    empathy_log_window_show (empathy_chat_get_account (priv->current_chat),
                 empathy_chat_get_id (priv->current_chat),
                 empathy_chat_is_group_chat (priv->current_chat),
                 GTK_WINDOW (priv->dialog));
}

static void
chat_window_info_activate_cb (GtkWidget        *menuitem,
                  EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    EmpathyContact        *contact;

    priv = GET_PRIV (window);

    contact = empathy_private_chat_get_contact (EMPATHY_PRIVATE_CHAT (priv->current_chat));

    empathy_contact_information_dialog_show (contact,
                         GTK_WINDOW (priv->dialog),
                         FALSE, FALSE);
}

static gboolean
chat_window_save_geometry_timeout_cb (EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    gint                  x, y, w, h;

    priv = GET_PRIV (window);

    gtk_window_get_size (GTK_WINDOW (priv->dialog), &w, &h);
    gtk_window_get_position (GTK_WINDOW (priv->dialog), &x, &y);

    empathy_chat_save_geometry (priv->current_chat, x, y, w, h);

    priv->save_geometry_id = 0;

    return FALSE;
}

static gboolean
chat_window_configure_event_cb (GtkWidget         *widget,
                GdkEventConfigure *event,
                EmpathyChatWindow  *window)
{
    EmpathyChatWindowPriv *priv;

    priv = GET_PRIV (window);

    /* Only save geometry information if there is ONE chat visible. */
    if (g_list_length (priv->chats) > 1) {
        return FALSE;
    }

    if (priv->save_geometry_id != 0) {
        g_source_remove (priv->save_geometry_id);
    }

    priv->save_geometry_id =
        g_timeout_add_seconds (1,
                       (GSourceFunc) chat_window_save_geometry_timeout_cb,
                       window);

    return FALSE;
}

static void
chat_window_conv_activate_cb (GtkWidget         *menuitem,
                  EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    EmpathyLogManager     *manager;
    gboolean              log_exists = FALSE;
    gboolean              can_voip = FALSE;

    priv = GET_PRIV (window);

    manager = empathy_log_manager_new ();
    log_exists = empathy_log_manager_exists (manager,
                         empathy_chat_get_account (priv->current_chat),
                         empathy_chat_get_id (priv->current_chat),
                         empathy_chat_is_group_chat (priv->current_chat));
    g_object_unref (manager);

    if (!empathy_chat_is_group_chat (priv->current_chat)) {
        EmpathyPrivateChat *chat;
        EmpathyContact     *contact;

        chat = EMPATHY_PRIVATE_CHAT (priv->current_chat);
        contact = empathy_private_chat_get_contact (chat);
        can_voip = empathy_contact_can_voip (contact);
    }

    gtk_widget_set_sensitive (priv->menu_conv_log, log_exists);
#ifdef HAVE_VOIP
    gtk_widget_set_sensitive (priv->menu_conv_call, can_voip);
#else 
    g_object_set (priv->menu_conv_call, "visible", FALSE, NULL);
    g_object_set (priv->menu_conv_call_separator, "visible", FALSE, NULL);
#endif
}

static void
chat_window_show_contacts_toggled_cb (GtkWidget        *menuitem,
                      EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    gboolean              show;

    priv = GET_PRIV (window);

    g_return_if_fail (priv->current_chat != NULL);

    show = gtk_check_menu_item_get_active (GTK_CHECK_MENU_ITEM (priv->menu_room_show_contacts));
    empathy_group_chat_set_show_contacts (EMPATHY_GROUP_CHAT (priv->current_chat), show);
}

static void
chat_window_close_activate_cb (GtkWidget        *menuitem,
                   EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    priv = GET_PRIV (window);

    g_return_if_fail (priv->current_chat != NULL);

    empathy_chat_window_remove_chat (window, priv->current_chat);
}

static void
chat_window_room_set_topic_activate_cb (GtkWidget        *menuitem,
                    EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    
    priv = GET_PRIV (window);

    if (empathy_chat_is_group_chat (priv->current_chat)) {
        EmpathyGroupChat *group_chat;

        group_chat = EMPATHY_GROUP_CHAT (priv->current_chat);
        empathy_group_chat_set_topic (group_chat);
    }
}

static void
chat_window_room_join_new_activate_cb (GtkWidget        *menuitem,
                       EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    priv = GET_PRIV (window);

    empathy_new_chatroom_dialog_show (GTK_WINDOW (priv->dialog));
}

static void
chat_window_room_invite_activate_cb (GtkWidget        *menuitem,
                     EmpathyChatWindow *window)
{
/* FIXME:
    EmpathyChatWindowPriv *priv;
    EmpathyContact        *own_contact;
    EmpathyChatroomId      id = 0;

    priv = GET_PRIV (window);
    own_contact = empathy_chat_get_own_contact (priv->current_chat);

    if (empathy_chat_is_group_chat (priv->current_chat)) {
        EmpathyGroupChat *group_chat;

        group_chat = EMPATHY_GROUP_CHAT (priv->current_chat);
        id = empathy_group_chat_get_chatroom_id (group_chat);
    }

    empathy_chat_invite_dialog_show (own_contact, id);
*/
}

static void
chat_window_room_add_activate_cb (GtkWidget        *menuitem,
                  EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv  *priv;
    EmpathyChatroomManager *manager;
    EmpathyChatroom        *chatroom;

    priv = GET_PRIV (window);

    g_return_if_fail (priv->current_chat != NULL);

    if (!empathy_chat_is_group_chat (priv->current_chat)) {
        return;
    }

    chatroom = empathy_chatroom_new_full (empathy_chat_get_account (priv->current_chat),
                          empathy_chat_get_id (priv->current_chat),
                          empathy_chat_get_name (priv->current_chat),
                          FALSE);

    manager = empathy_chatroom_manager_new ();
    empathy_chatroom_manager_add (manager, chatroom);
    chat_window_update_menu (window);

    g_object_unref (chatroom);
    g_object_unref (manager);
}

static void
chat_window_edit_activate_cb (GtkWidget        *menuitem,
                  EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    GtkClipboard         *clipboard;
    GtkTextBuffer        *buffer;
    gboolean              text_available;

    priv = GET_PRIV (window);

    g_return_if_fail (priv->current_chat != NULL);

    if (!empathy_chat_is_connected (priv->current_chat)) {
        gtk_widget_set_sensitive (priv->menu_edit_copy, FALSE);
        gtk_widget_set_sensitive (priv->menu_edit_cut, FALSE);
        gtk_widget_set_sensitive (priv->menu_edit_paste, FALSE);
        return;
    }

    buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (priv->current_chat->input_text_view));
    if (gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL)) {
        gtk_widget_set_sensitive (priv->menu_edit_copy, TRUE);
        gtk_widget_set_sensitive (priv->menu_edit_cut, TRUE);
    } else {
        gboolean selection;

        selection = empathy_chat_view_get_selection_bounds (priv->current_chat->view, 
                                   NULL, NULL);

        gtk_widget_set_sensitive (priv->menu_edit_cut, FALSE);
        gtk_widget_set_sensitive (priv->menu_edit_copy, selection);
    }

    clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
    text_available = gtk_clipboard_wait_is_text_available (clipboard);
    gtk_widget_set_sensitive (priv->menu_edit_paste, text_available);
}

static void
chat_window_cut_activate_cb (GtkWidget        *menuitem,
                 EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    g_return_if_fail (EMPATHY_IS_CHAT_WINDOW (window));

    priv = GET_PRIV (window);

    empathy_chat_cut (priv->current_chat);
}

static void
chat_window_copy_activate_cb (GtkWidget        *menuitem,
                  EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    g_return_if_fail (EMPATHY_IS_CHAT_WINDOW (window));

    priv = GET_PRIV (window);

    empathy_chat_copy (priv->current_chat);
}

static void
chat_window_paste_activate_cb (GtkWidget        *menuitem,
                   EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    g_return_if_fail (EMPATHY_IS_CHAT_WINDOW (window));

    priv = GET_PRIV (window);

    empathy_chat_paste (priv->current_chat);
}

static void
chat_window_tabs_left_activate_cb (GtkWidget        *menuitem,
                   EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    EmpathyChat           *chat;
    gint                  index;

    priv = GET_PRIV (window);

    chat = priv->current_chat;
    index = gtk_notebook_get_current_page (GTK_NOTEBOOK (priv->notebook));
    if (index <= 0) {
        return;
    }

    gtk_notebook_reorder_child (GTK_NOTEBOOK (priv->notebook),
                    empathy_chat_get_widget (chat),
                    index - 1);

    chat_window_update_menu (window);
    chat_window_update_status (window, chat);
}

static void
chat_window_tabs_right_activate_cb (GtkWidget        *menuitem,
                    EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    EmpathyChat           *chat;
    gint                  index;

    priv = GET_PRIV (window);

    chat = priv->current_chat;
    index = gtk_notebook_get_current_page (GTK_NOTEBOOK (priv->notebook));

    gtk_notebook_reorder_child (GTK_NOTEBOOK (priv->notebook),
                    empathy_chat_get_widget (chat),
                    index + 1);

    chat_window_update_menu (window);
    chat_window_update_status (window, chat);
}

static void
chat_window_detach_activate_cb (GtkWidget        *menuitem,
                EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    EmpathyChatWindow     *new_window;
    EmpathyChat           *chat;

    priv = GET_PRIV (window);

    chat = priv->current_chat;
    new_window = empathy_chat_window_new ();

    empathy_chat_window_move_chat (window, new_window, chat);

    priv = GET_PRIV (new_window);
    gtk_widget_show (priv->dialog);
}

static void
chat_window_help_contents_cb (GtkWidget         *menuitem,
                  EmpathyChatWindow *window)
{
    //empathy_help_show ();
}

static void
chat_window_help_about_cb (GtkWidget         *menuitem,
               EmpathyChatWindow *window)
{
    empathy_about_dialog_new (GTK_WINDOW (window));
}

static gboolean
chat_window_delete_event_cb (GtkWidget        *dialog,
                 GdkEvent         *event,
                 EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    GList                *list;
    GList                *l;

    priv = GET_PRIV (window);

    empathy_debug (DEBUG_DOMAIN, "Delete event received");

    list = g_list_copy (priv->chats);

    for (l = list; l; l = l->next) {
        empathy_chat_window_remove_chat (window, l->data);
    }

    g_list_free (list);

    return TRUE;
}

static void
chat_window_status_changed_cb (EmpathyChat       *chat,
                   EmpathyChatWindow *window)
{
    chat_window_update_menu (window);
    chat_window_update_status (window, chat);
}

static void
chat_window_update_tooltip (EmpathyChatWindow *window,
                EmpathyChat       *chat)
{
    EmpathyChatWindowPriv *priv;
    GtkWidget            *widget;
    gchar                *current_tooltip;
    gchar                *str;

    priv = GET_PRIV (window);

    current_tooltip = empathy_chat_get_tooltip (chat);

    if (g_list_find (priv->chats_composing, chat)) {
        str = g_strconcat (current_tooltip, "\n", _("Typing a message."), NULL);
        g_free (current_tooltip);
    } else {
        str = current_tooltip;
    }

    widget = g_object_get_data (G_OBJECT (chat), "chat-window-tab-tooltip-widget");
    gtk_widget_set_tooltip_text (widget, str);

    g_free (str);
}

static void
chat_window_name_changed_cb (EmpathyChat       *chat,
                 const gchar      *name,
                 EmpathyChatWindow *window)
{
    GtkLabel *label;

    label = g_object_get_data (G_OBJECT (chat), "chat-window-tab-label");

    gtk_label_set_text (label, name);
}

static void
chat_window_composing_cb (EmpathyChat       *chat,
              gboolean          is_composing,
              EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    priv = GET_PRIV (window);

    if (is_composing && !g_list_find (priv->chats_composing, chat)) {
        priv->chats_composing = g_list_prepend (priv->chats_composing, chat);
    } else {
        priv->chats_composing = g_list_remove (priv->chats_composing, chat);
    }

    chat_window_update_status (window, chat);
}

static void
chat_window_new_message_cb (EmpathyChat       *chat,
                EmpathyMessage    *message,
                gboolean          is_backlog,
                EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    gboolean              has_focus;
    gboolean              needs_urgency;

    priv = GET_PRIV (window);

    has_focus = empathy_chat_window_has_focus (window);
    
    if (has_focus && priv->current_chat == chat) {
        empathy_debug (DEBUG_DOMAIN, "New message, we have focus");
        return;
    }
    
    empathy_debug (DEBUG_DOMAIN, "New message, no focus");

    needs_urgency = FALSE;
    if (empathy_chat_is_group_chat (chat)) {        
        if (!is_backlog && 
            empathy_chat_should_highlight_nick (message)) {
            empathy_debug (DEBUG_DOMAIN, "Highlight this nick");
            needs_urgency = TRUE;
        }
    } else {
        needs_urgency = TRUE;
    }

    if (needs_urgency && !has_focus) {
        chat_window_set_urgency_hint (window, TRUE);
    }

    if (!is_backlog && 
        !g_list_find (priv->chats_new_msg, chat)) {
        priv->chats_new_msg = g_list_prepend (priv->chats_new_msg, chat);
        chat_window_update_status (window, chat);
    }
}

static GtkNotebook *
chat_window_detach_hook (GtkNotebook *source,
             GtkWidget   *page,
             gint         x,
             gint         y,
             gpointer     user_data)
{
    EmpathyChatWindowPriv *priv;
    EmpathyChatWindow     *window, *new_window;
    EmpathyChat           *chat;

    chat = g_object_get_data (G_OBJECT (page), "chat");
    window = empathy_chat_get_window (chat);

    new_window = empathy_chat_window_new ();
    priv = GET_PRIV (new_window);

    empathy_debug (DEBUG_DOMAIN, "Detach hook called");

    empathy_chat_window_move_chat (window, new_window, chat);

    gtk_window_move (GTK_WINDOW (priv->dialog), x, y);
    gtk_widget_show (priv->dialog);

    return NULL;
}

static void
chat_window_page_switched_cb (GtkNotebook      *notebook,
                  GtkNotebookPage  *page,
                  gint          page_num,
                  EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    EmpathyChat           *chat;
    GtkWidget            *child;

    empathy_debug (DEBUG_DOMAIN, "Page switched");

    priv = GET_PRIV (window);

    child = gtk_notebook_get_nth_page (notebook, page_num);
    chat = g_object_get_data (G_OBJECT (child), "chat");

    if (priv->page_added) {
        priv->page_added = FALSE;
        empathy_chat_scroll_down (chat);
    }
    else if (priv->current_chat == chat) {
        return;
    }

    priv->current_chat = chat;
    priv->chats_new_msg = g_list_remove (priv->chats_new_msg, chat);

    chat_window_update_menu (window);
    chat_window_update_status (window, chat);
}

static void
chat_window_page_reordered_cb (GtkNotebook      *notebook,
                   GtkWidget        *widget,
                   guint             page_num,
                   EmpathyChatWindow *window)
{
    empathy_debug (DEBUG_DOMAIN, "Page reordered");
    
    chat_window_update_menu (window);
}

static void
chat_window_page_added_cb (GtkNotebook      *notebook,
               GtkWidget        *child,
               guint             page_num,
               EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    EmpathyChat           *chat;

    priv = GET_PRIV (window);

    /* If we just received DND to the same window, we don't want
     * to do anything here like removing the tab and then readding
     * it, so we return here and in "page-added".
     */
    if (priv->dnd_same_window) {
        empathy_debug (DEBUG_DOMAIN, "Page added (back to the same window)");
        priv->dnd_same_window = FALSE;
        return;
    }

    empathy_debug (DEBUG_DOMAIN, "Page added");

    /* Get chat object */
    chat = g_object_get_data (G_OBJECT (child), "chat");

    /* Set the chat window */
    empathy_chat_set_window (chat, window);

    /* Connect chat signals for this window */
    g_signal_connect (chat, "status-changed",
              G_CALLBACK (chat_window_status_changed_cb),
              window);
    g_signal_connect (chat, "name-changed",
              G_CALLBACK (chat_window_name_changed_cb),
              window);
    g_signal_connect (chat, "composing",
              G_CALLBACK (chat_window_composing_cb),
              window);
    g_signal_connect (chat, "new-message",
              G_CALLBACK (chat_window_new_message_cb),
              window);

    /* Set flag so we know to perform some special operations on
     * switch page due to the new page being added.
     */
    priv->page_added = TRUE;

    /* Get list of chats up to date */
    priv->chats = g_list_append (priv->chats, chat);
}

static void
chat_window_page_removed_cb (GtkNotebook      *notebook,
                 GtkWidget        *child,
                 guint             page_num,
                 EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    EmpathyChat           *chat;

    priv = GET_PRIV (window);

    /* If we just received DND to the same window, we don't want
     * to do anything here like removing the tab and then readding
     * it, so we return here and in "page-added".
     */
    if (priv->dnd_same_window) {
        empathy_debug (DEBUG_DOMAIN, "Page removed (and will be readded to same window)");
        return;
    }

    empathy_debug (DEBUG_DOMAIN, "Page removed");

    /* Get chat object */
    chat = g_object_get_data (G_OBJECT (child), "chat");

    /* Unset the window associated with a chat */
    empathy_chat_set_window (chat, NULL);

    /* Disconnect all signal handlers for this chat and this window */
    g_signal_handlers_disconnect_by_func (chat,
                          G_CALLBACK (chat_window_status_changed_cb),
                          window);
    g_signal_handlers_disconnect_by_func (chat,
                          G_CALLBACK (chat_window_name_changed_cb),
                          window);
    g_signal_handlers_disconnect_by_func (chat,
                          G_CALLBACK (chat_window_composing_cb),
                          window);
    g_signal_handlers_disconnect_by_func (chat,
                          G_CALLBACK (chat_window_new_message_cb),
                          window);

    /* Keep list of chats up to date */
    priv->chats = g_list_remove (priv->chats, chat);
    priv->chats_new_msg = g_list_remove (priv->chats_new_msg, chat);
    priv->chats_composing = g_list_remove (priv->chats_composing, chat);

    if (priv->chats == NULL) {
        g_object_unref (window);
    } else {
        chat_window_update_menu (window);
        chat_window_update_title (window, NULL);
    }
}

static gboolean
chat_window_focus_in_event_cb (GtkWidget        *widget,
                   GdkEvent         *event,
                   EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    empathy_debug (DEBUG_DOMAIN, "Focus in event, updating title");

    priv = GET_PRIV (window);

    priv->chats_new_msg = g_list_remove (priv->chats_new_msg, priv->current_chat);

    chat_window_set_urgency_hint (window, FALSE);
    
    /* Update the title, since we now mark all unread messages as read. */
    chat_window_update_status (window, priv->current_chat);

    return FALSE;
}

static void
chat_window_drag_data_received (GtkWidget        *widget,
                GdkDragContext   *context,
                int               x,
                int               y,
                GtkSelectionData *selection,
                guint             info,
                guint             time,
                EmpathyChatWindow *window)
{
    if (info == DND_DRAG_TYPE_CONTACT_ID) {
        EmpathyContactFactory *factory;
        EmpathyContact        *contact = NULL;
        EmpathyChat           *chat;
        EmpathyChatWindow     *old_window;
        McAccount             *account;
        const gchar           *id = NULL;
        gchar                **strv;

        if (selection) {
            id = (const gchar*) selection->data;
        }

        empathy_debug (DEBUG_DOMAIN, "DND contact from roster with id:'%s'", id);
        
        strv = g_strsplit (id, "/", 2);
        factory = empathy_contact_factory_new ();
        account = mc_account_lookup (strv[0]);
        if (account) {
            contact = empathy_contact_factory_get_from_id (factory,
                                       account,
                                       strv[1]);
            g_object_unref (account);
        }
        g_object_unref (factory);
        g_object_unref (account);
        g_strfreev (strv);

        if (!contact) {
            empathy_debug (DEBUG_DOMAIN, "DND contact from roster not found");
            return;
        }
        
        account = empathy_contact_get_account (contact);
        chat = empathy_chat_window_find_chat (account, id);

        if (!chat) {
            empathy_chat_with_contact_id (account, id);
            return;
        }

        old_window = empathy_chat_get_window (chat);        
        if (old_window) {
            if (old_window == window) {
                gtk_drag_finish (context, TRUE, FALSE, time);
                return;
            }
            
            empathy_chat_window_move_chat (old_window, window, chat);
        } else {
            empathy_chat_window_add_chat (window, chat);
        }
        
        /* Added to take care of any outstanding chat events */
        empathy_chat_present (chat);

        /* We should return TRUE to remove the data when doing
         * GDK_ACTION_MOVE, but we don't here otherwise it has
         * weird consequences, and we handle that internally
         * anyway with add_chat() and remove_chat().
         */
        gtk_drag_finish (context, TRUE, FALSE, time);
    }
    else if (info == DND_DRAG_TYPE_TAB) {
        EmpathyChat        *chat = NULL;
        EmpathyChatWindow  *old_window;
        GtkWidget        **child = NULL;

        empathy_debug (DEBUG_DOMAIN, "DND tab");

        if (selection) {
            child = (void*) selection->data;
        }

        if (child) {
            chat = g_object_get_data (G_OBJECT (*child), "chat");
        }

        old_window = empathy_chat_get_window (chat);
        if (old_window) {
            EmpathyChatWindowPriv *priv;

            priv = GET_PRIV (window);

            if (old_window == window) {
                empathy_debug (DEBUG_DOMAIN, "DND tab (within same window)");
                priv->dnd_same_window = TRUE;
                gtk_drag_finish (context, TRUE, FALSE, time);
                return;
            }
            
            priv->dnd_same_window = FALSE;
        }

        /* We should return TRUE to remove the data when doing
         * GDK_ACTION_MOVE, but we don't here otherwise it has
         * weird consequences, and we handle that internally
         * anyway with add_chat() and remove_chat().
         */
        gtk_drag_finish (context, TRUE, FALSE, time);
    } else {
        empathy_debug (DEBUG_DOMAIN, "DND from unknown source");
        gtk_drag_finish (context, FALSE, FALSE, time);
    }
}

static void
chat_window_set_urgency_hint (EmpathyChatWindow *window,
                  gboolean          urgent)
{
    EmpathyChatWindowPriv *priv;

    priv = GET_PRIV (window);

    empathy_debug (DEBUG_DOMAIN, "Turning %s urgency hint",
               urgent ? "on" : "off");
    gtk_window_set_urgency_hint (GTK_WINDOW (priv->dialog), urgent);
}

EmpathyChatWindow *
empathy_chat_window_new (void)
{
    return EMPATHY_CHAT_WINDOW (g_object_new (EMPATHY_TYPE_CHAT_WINDOW, NULL));
}

GtkWidget *
empathy_chat_window_get_dialog (EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;

    g_return_val_if_fail (window != NULL, NULL);

    priv = GET_PRIV (window);

    return priv->dialog;
}

void
empathy_chat_window_add_chat (EmpathyChatWindow *window,
                  EmpathyChat   *chat)
{
    EmpathyChatWindowPriv *priv;
    GtkWidget            *label;
    GtkWidget            *child;

    g_return_if_fail (window != NULL);
    g_return_if_fail (EMPATHY_IS_CHAT (chat));

    priv = GET_PRIV (window);

    /* Reference the chat object */
    g_object_ref (chat);

    /* Set the chat window */
    empathy_chat_set_window (chat, window);

    if (g_list_length (priv->chats) == 0) {
        gint x, y, w, h;

        empathy_chat_load_geometry (chat, &x, &y, &w, &h);

        if (x >= 0 && y >= 0) {
            /* Let the window manager position it if we don't have
             * good x, y coordinates.
             */
            gtk_window_move (GTK_WINDOW (priv->dialog), x, y);
        }

        if (w > 0 && h > 0) {
            /* Use the defaults from the glade file if we don't have
             * good w, h geometry.
             */
            gtk_window_resize (GTK_WINDOW (priv->dialog), w, h);
        }
    }

    child = empathy_chat_get_widget (chat);
    label = chat_window_create_label (window, chat); 

    gtk_notebook_append_page (GTK_NOTEBOOK (priv->notebook), child, label);
    gtk_notebook_set_tab_reorderable (GTK_NOTEBOOK (priv->notebook), child, TRUE);
    gtk_notebook_set_tab_detachable (GTK_NOTEBOOK (priv->notebook), child, TRUE);
    gtk_notebook_set_tab_label_packing (GTK_NOTEBOOK (priv->notebook), child,
                        TRUE, TRUE, GTK_PACK_START); 

    empathy_debug (DEBUG_DOMAIN, 
              "Chat added (%d references)",
              G_OBJECT (chat)->ref_count);
}

void
empathy_chat_window_remove_chat (EmpathyChatWindow *window,
                 EmpathyChat       *chat)
{
    EmpathyChatWindowPriv *priv;
    gint                  position;

    g_return_if_fail (window != NULL);
    g_return_if_fail (EMPATHY_IS_CHAT (chat));

    priv = GET_PRIV (window);

    position = gtk_notebook_page_num (GTK_NOTEBOOK (priv->notebook),
                      empathy_chat_get_widget (chat));
    gtk_notebook_remove_page (GTK_NOTEBOOK (priv->notebook), position);

    empathy_debug (DEBUG_DOMAIN, 
              "Chat removed (%d references)", 
              G_OBJECT (chat)->ref_count - 1);

    g_object_unref (chat);
}

void
empathy_chat_window_move_chat (EmpathyChatWindow *old_window,
                   EmpathyChatWindow *new_window,
                   EmpathyChat       *chat)
{
    GtkWidget *widget;

    g_return_if_fail (EMPATHY_IS_CHAT_WINDOW (old_window));
    g_return_if_fail (EMPATHY_IS_CHAT_WINDOW (new_window));
    g_return_if_fail (EMPATHY_IS_CHAT (chat));

    widget = empathy_chat_get_widget (chat);

    empathy_debug (DEBUG_DOMAIN,
              "Chat moving with widget:%p (%d references)", 
              widget,
              G_OBJECT (widget)->ref_count);

    /* We reference here to make sure we don't loose the widget
     * and the EmpathyChat object during the move.
     */
    g_object_ref (chat);
    g_object_ref (widget);

    empathy_chat_window_remove_chat (old_window, chat);
    empathy_chat_window_add_chat (new_window, chat);

    g_object_unref (widget);
    g_object_unref (chat);
}

void
empathy_chat_window_switch_to_chat (EmpathyChatWindow *window,
                    EmpathyChat       *chat)
{
    EmpathyChatWindowPriv *priv;
    gint                  page_num;

    g_return_if_fail (window != NULL);
    g_return_if_fail (EMPATHY_IS_CHAT (chat));

    priv = GET_PRIV (window);

    page_num = gtk_notebook_page_num (GTK_NOTEBOOK (priv->notebook),
                      empathy_chat_get_widget (chat));
    gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->notebook),
                       page_num);
}

gboolean
empathy_chat_window_has_focus (EmpathyChatWindow *window)
{
    EmpathyChatWindowPriv *priv;
    gboolean              has_focus;

    g_return_val_if_fail (EMPATHY_IS_CHAT_WINDOW (window), FALSE);

    priv = GET_PRIV (window);

    g_object_get (priv->dialog, "has-toplevel-focus", &has_focus, NULL);

    return has_focus;
}

EmpathyChat *
empathy_chat_window_find_chat (McAccount   *account,
                   const gchar *id)
{
    GList *l;

    g_return_val_if_fail (MC_IS_ACCOUNT (account), NULL);
    g_return_val_if_fail (!G_STR_EMPTY (id), NULL);

    for (l = chat_windows; l; l = l->next) {
        EmpathyChatWindowPriv *priv;
        EmpathyChatWindow     *window;
        GList                *ll;

        window = l->data;
        priv = GET_PRIV (window);

        for (ll = priv->chats; ll; ll = ll->next) {
            EmpathyChat *chat;

            chat = ll->data;

            if (empathy_account_equal (account, empathy_chat_get_account (chat)) &&
                strcmp (id, empathy_chat_get_id (chat)) == 0) {
                return chat;
            }
        }
    }

    return NULL;
}