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

#include <time.h>
#include <sys/types.h>
#include <string.h>
#include <glib/gi18n.h>
#include <gio/gio.h>
#include <gtk/gtk.h>
#include <gtksourceview/gtksource.h>
#include <libpeas/peas-extension-set.h>

#include "xed-ui.h"
#include "xed-window.h"
#include "xed-window-private.h"
#include "xed-app.h"
#include "xed-notebook.h"
#include "xed-statusbar.h"
#include "xed-searchbar.h"
#include "xed-view-frame.h"
#include "xed-utils.h"
#include "xed-commands.h"
#include "xed-debug.h"
#include "xed-language-manager.h"
#include "xed-panel.h"
#include "xed-documents-panel.h"
#include "xed-plugins-engine.h"
#include "xed-window-activatable.h"
#include "xed-enum-types.h"
#include "xed-dirs.h"
#include "xed-status-combo-box.h"
#include "xed-settings.h"

#define LANGUAGE_NONE  (const gchar *)"LangNone"
#define XED_UIFILE     "xed-ui.xml"
#define TAB_WIDTH_DATA "XedWindowTabWidthData"
#define LANGUAGE_DATA  "XedWindowLanguageData"

#define FULLSCREEN_ANIMATION_SPEED 4

#define XED_WINDOW_DEFAULT_WIDTH  650
#define XED_WINDOW_DEFAULT_HEIGHT 500

#define XED_WINDOW_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), XED_TYPE_WINDOW, XedWindowPrivate))

/* Signals */
enum
{
    TAB_ADDED,
    TAB_REMOVED,
    TABS_REORDERED,
    ACTIVE_TAB_CHANGED,
    ACTIVE_TAB_STATE_CHANGED,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

enum
{
    PROP_0,
    PROP_STATE
};

enum
{
    TARGET_URI_LIST = 100
};

G_DEFINE_TYPE(XedWindow, xed_window, GTK_TYPE_WINDOW)

static void recent_manager_changed (GtkRecentManager *manager, XedWindow *window);

static void
xed_window_get_property (GObject    *object,
                         guint       prop_id,
                         GValue     *value,
                         GParamSpec *pspec)
{
    XedWindow *window = XED_WINDOW(object);

    switch (prop_id)
    {
        case PROP_STATE:
            g_value_set_enum (value, xed_window_get_state (window));
            break;
        default:
            G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
            break;
    }
}

static void
save_panes_state (XedWindow *window)
{
    gint panel_page;

    xed_debug (DEBUG_WINDOW);

    if (window->priv->side_panel_size > 0)
    {
        g_settings_set_int (window->priv->window_settings, XED_SETTINGS_SIDE_PANEL_SIZE, window->priv->side_panel_size);
    }

    panel_page = _xed_panel_get_active_item_id (XED_PANEL (window->priv->side_panel));
    if (panel_page != 0)
    {
        g_settings_set_int (window->priv->window_settings, XED_SETTINGS_SIDE_PANEL_ACTIVE_PAGE, panel_page);
    }

    if (window->priv->bottom_panel_size > 0)
    {
        g_settings_set_int (window->priv->window_settings, XED_SETTINGS_BOTTOM_PANEL_SIZE, window->priv->bottom_panel_size);
    }

    panel_page = _xed_panel_get_active_item_id (XED_PANEL(window->priv->bottom_panel));
    if (panel_page != 0)
    {
        g_settings_set_int (window->priv->window_settings, XED_SETTINGS_BOTTOM_PANEL_ACTIVE_PAGE, panel_page);
    }

    g_settings_apply (window->priv->window_settings);
}

static gint
on_key_pressed (GtkWidget *widget,
                GdkEventKey *event,
                XedWindow *window)
{
    if (event->keyval == GDK_KEY_Escape)
    {
        XedTab *tab;
        XedViewFrame *frame;

        tab = xed_window_get_active_tab (window);
        frame = XED_VIEW_FRAME (_xed_tab_get_view_frame (tab));

        if (xed_view_frame_get_search_popup_visible (frame))
        {
            return GDK_EVENT_PROPAGATE;
        }
        else
        {
            xed_searchbar_hide (XED_SEARCHBAR (window->priv->searchbar));
            return GDK_EVENT_STOP;
        }
    }

    return GDK_EVENT_PROPAGATE;
}

static void
save_window_state (GtkWidget *widget)
{
    XedWindow *window = XED_WINDOW (widget);

    if ((window->priv->window_state &
        (GDK_WINDOW_STATE_MAXIMIZED | GDK_WINDOW_STATE_FULLSCREEN)) == 0)
    {
        GtkAllocation allocation;

        gtk_widget_get_allocation (widget, &allocation);

        window->priv->width = allocation.width;
        window->priv->height = allocation.height;

        g_settings_set (window->priv->window_settings, XED_SETTINGS_WINDOW_SIZE,
                        "(ii)", window->priv->width, window->priv->height);
    }
}

static void
xed_window_dispose (GObject *object)
{
    XedWindow *window;

    xed_debug (DEBUG_WINDOW);

    window = XED_WINDOW (object);

    /* Stop tracking removal of panes otherwise we always
     * end up with thinking we had no pane active, since they
     * should all be removed below */
    if (window->priv->bottom_panel_item_removed_handler_id != 0)
    {
        g_signal_handler_disconnect (window->priv->bottom_panel, window->priv->bottom_panel_item_removed_handler_id);
        window->priv->bottom_panel_item_removed_handler_id = 0;
    }

    /* First of all, force collection so that plugins
     * really drop some of the references.
     */
    peas_engine_garbage_collect (PEAS_ENGINE (xed_plugins_engine_get_default()));

    /* save the panes position and make sure to deactivate plugins
     * for this window, but only once */
    if (!window->priv->dispose_has_run)
    {
        save_window_state (GTK_WIDGET (window));
        save_panes_state (window);

        /* Note that unreffing the extension will automatically remove
           all extensions which in turn will deactivate the extension */
        g_object_unref (window->priv->extensions);

        peas_engine_garbage_collect (PEAS_ENGINE (xed_plugins_engine_get_default ()));

        window->priv->dispose_has_run = TRUE;
    }

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

    if (window->priv->fullscreen_controls != NULL)
    {
        gtk_widget_destroy (window->priv->fullscreen_controls);
        window->priv->fullscreen_controls = NULL;
    }

    if (window->priv->recents_handler_id != 0)
    {
        GtkRecentManager *recent_manager;
        recent_manager = gtk_recent_manager_get_default ();
        g_signal_handler_disconnect (recent_manager, window->priv->recents_handler_id);
        window->priv->recents_handler_id = 0;
    }

    g_clear_object (&window->priv->manager);
    g_clear_object (&window->priv->message_bus);
    g_clear_object (&window->priv->window_group);
    g_clear_object (&window->priv->default_location);

    /* We must free the settings after saving the panels */
    g_clear_object (&window->priv->editor_settings);
    g_clear_object (&window->priv->ui_settings);
    g_clear_object (&window->priv->window_settings);

    /* Now that there have broken some reference loops, force collection again. */
    peas_engine_garbage_collect (PEAS_ENGINE (xed_plugins_engine_get_default ()));

    G_OBJECT_CLASS (xed_window_parent_class)->dispose (object);
}

static void
xed_window_finalize (GObject *object)
{
    xed_debug (DEBUG_WINDOW);

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

static gboolean
xed_window_window_state_event (GtkWidget           *widget,
                               GdkEventWindowState *event)
{
    XedWindow *window = XED_WINDOW (widget);

    window->priv->window_state = event->new_window_state;
    g_settings_set_int (window->priv->window_settings, XED_SETTINGS_WINDOW_STATE, window->priv->state);

    return FALSE;
}

static gboolean
xed_window_configure_event (GtkWidget         *widget,
                            GdkEventConfigure *event)
{
    XedWindow *window = XED_WINDOW (widget);

    if (gtk_widget_get_realized (widget) &&
        window->priv->state & (GDK_WINDOW_STATE_MAXIMIZED | GDK_WINDOW_STATE_FULLSCREEN) == 0)
    {
        save_window_state (widget);
    }

    return GTK_WIDGET_CLASS (xed_window_parent_class)->configure_event (widget, event);
}

/*
 * GtkWindow catches keybindings for the menu items _before_ passing them to
 * the focused widget. This is unfortunate and means that pressing ctrl+V
 * in an entry on a panel ends up pasting text in the TextView.
 * Here we override GtkWindow's handler to do the same things that it
 * does, but in the opposite order and then we chain up to the grand
 * parent handler, skipping gtk_window_key_press_event.
 */
static gboolean
xed_window_key_press_event (GtkWidget *widget,
                            GdkEventKey *event)
{
    static gpointer grand_parent_class = NULL;
    GtkWindow *window = GTK_WINDOW(widget);
    gboolean handled = FALSE;

    if (grand_parent_class == NULL)
    {
        grand_parent_class = g_type_class_peek_parent (xed_window_parent_class);
    }

    /* handle focus widget key events */
    if (!handled)
    {
        handled = gtk_window_propagate_key_event (window, event);
    }

    /* handle mnemonics and accelerators */
    if (!handled)
    {
        handled = gtk_window_activate_key (window, event);
    }

    /* Chain up, invokes binding set */
    if (!handled)
    {
        handled = GTK_WIDGET_CLASS (grand_parent_class)->key_press_event (widget, event);
    }

    return handled;
}

static void
xed_window_tab_removed (XedWindow *window,
                        XedTab *tab)
{
    peas_engine_garbage_collect (PEAS_ENGINE (xed_plugins_engine_get_default ()));
}

static void
xed_window_class_init (XedWindowClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS(klass);
    GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);

    klass->tab_removed = xed_window_tab_removed;

    object_class->dispose = xed_window_dispose;
    object_class->finalize = xed_window_finalize;
    object_class->get_property = xed_window_get_property;

    widget_class->window_state_event = xed_window_window_state_event;
    widget_class->configure_event = xed_window_configure_event;
    widget_class->key_press_event = xed_window_key_press_event;

    signals[TAB_ADDED] = g_signal_new ("tab_added", G_OBJECT_CLASS_TYPE(object_class),
                                    G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET(XedWindowClass, tab_added),
                                    NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, XED_TYPE_TAB);

    signals[TAB_REMOVED] = g_signal_new ("tab_removed", G_OBJECT_CLASS_TYPE(object_class),
                                    G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET(XedWindowClass, tab_removed),
                                    NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, XED_TYPE_TAB);

    signals[TABS_REORDERED] = g_signal_new ("tabs_reordered", G_OBJECT_CLASS_TYPE(object_class),
                                    G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET(XedWindowClass, tabs_reordered),
                                    NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);

    signals[ACTIVE_TAB_CHANGED] = g_signal_new ("active_tab_changed", G_OBJECT_CLASS_TYPE(object_class),
                                    G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET(XedWindowClass, active_tab_changed),
                                    NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, XED_TYPE_TAB);

    signals[ACTIVE_TAB_STATE_CHANGED] = g_signal_new ("active_tab_state_changed", G_OBJECT_CLASS_TYPE(object_class),
                                    G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET(XedWindowClass, active_tab_state_changed),
                                    NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);

    g_object_class_install_property (object_class, PROP_STATE, g_param_spec_flags ("state",
                                                                    "State",
                                                                    "The window's state",
                                                                    XED_TYPE_WINDOW_STATE,
                                                                    XED_WINDOW_STATE_NORMAL,
                                                                    G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));

    g_type_class_add_private (object_class, sizeof(XedWindowPrivate));
}

static void
menu_item_select_cb (GtkMenuItem *proxy,
                     XedWindow *window)
{
    GtkAction *action;
    char *message;

    action = gtk_activatable_get_related_action (GTK_ACTIVATABLE(proxy));
    g_return_if_fail(action != NULL);

    g_object_get (G_OBJECT(action), "tooltip", &message, NULL);
    if (message)
    {
        gtk_statusbar_push (GTK_STATUSBAR(window->priv->statusbar), window->priv->tip_message_cid, message);
        g_free (message);
    }
}

static void
menu_item_deselect_cb (GtkMenuItem *proxy,
                       XedWindow *window)
{
    gtk_statusbar_pop (GTK_STATUSBAR(window->priv->statusbar), window->priv->tip_message_cid);
}

static void
connect_proxy_cb (GtkUIManager *manager,
                  GtkAction *action,
                  GtkWidget *proxy,
                  XedWindow *window)
{
    if (GTK_IS_MENU_ITEM(proxy))
    {
        g_signal_connect(proxy, "select", G_CALLBACK (menu_item_select_cb), window);
        g_signal_connect(proxy, "deselect", G_CALLBACK (menu_item_deselect_cb), window);
    }
}

static void
disconnect_proxy_cb (GtkUIManager *manager,
                     GtkAction *action,
                     GtkWidget *proxy,
                     XedWindow *window)
{
    if (GTK_IS_MENU_ITEM(proxy))
    {
        g_signal_handlers_disconnect_by_func(proxy, G_CALLBACK (menu_item_select_cb), window);
        g_signal_handlers_disconnect_by_func(proxy, G_CALLBACK (menu_item_deselect_cb), window);
    }
}

/* Returns TRUE if toolbar is visible */
static gboolean
set_toolbar_style (XedWindow *window,
                   XedWindow *origin)
{
    gboolean visible;
    GtkAction *action;

    if (origin == NULL)
    {
        visible = g_settings_get_boolean (window->priv->ui_settings, XED_SETTINGS_TOOLBAR_VISIBLE);
    }
    else
    {
        visible = gtk_widget_get_visible (origin->priv->toolbar);
    }

    /* Set visibility */
    if (visible)
    {
        gtk_widget_show (window->priv->toolbar);
    }
    else
    {
        gtk_widget_hide (window->priv->toolbar);
    }

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "ViewToolbar");

    if (gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)) != visible)
    {
        gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), visible);
    }

    return visible;
}

static void
update_next_prev_doc_sensitivity (XedWindow *window,
                                  XedTab *tab)
{
    gint tab_number;
    GtkNotebook *notebook;
    GtkAction *action;

    xed_debug (DEBUG_WINDOW);

    notebook = GTK_NOTEBOOK(_xed_window_get_notebook (window));

    tab_number = gtk_notebook_page_num (notebook, GTK_WIDGET(tab));
    g_return_if_fail(tab_number >= 0);

    action = gtk_action_group_get_action (window->priv->action_group, "DocumentsPreviousDocument");
    gtk_action_set_sensitive (action, tab_number != 0);

    action = gtk_action_group_get_action (window->priv->action_group, "DocumentsNextDocument");
    gtk_action_set_sensitive (action, tab_number < gtk_notebook_get_n_pages (notebook) - 1);
}

static void
update_next_prev_doc_sensitivity_per_window (XedWindow *window)
{
    XedTab *tab;
    GtkAction *action;

    xed_debug (DEBUG_WINDOW);

    tab = xed_window_get_active_tab (window);
    if (tab != NULL)
    {
        update_next_prev_doc_sensitivity (window, tab);
        return;
    }

    action = gtk_action_group_get_action (window->priv->action_group, "DocumentsPreviousDocument");
    gtk_action_set_sensitive (action, FALSE);

    action = gtk_action_group_get_action (window->priv->action_group, "DocumentsNextDocument");
    gtk_action_set_sensitive (action, FALSE);

}

static void
received_clipboard_contents (GtkClipboard *clipboard,
                             GtkSelectionData *selection_data,
                             XedWindow *window)
{
    gboolean sens;
    GtkAction *action;

    /* getting clipboard contents is async, so we need to
     * get the current tab and its state */

    if (window->priv->active_tab != NULL)
    {
        XedTabState state;
        gboolean state_normal;
        state = xed_tab_get_state (window->priv->active_tab);
        state_normal = (state == XED_TAB_STATE_NORMAL);
        sens = state_normal && gtk_selection_data_targets_include_text (selection_data);
    }
    else
    {
        sens = FALSE;
    }

    action = gtk_action_group_get_action (window->priv->action_group, "EditPaste");
    gtk_action_set_sensitive (action, sens);
    g_object_unref (window);
}

static void
set_paste_sensitivity_according_to_clipboard (XedWindow *window,
                                              GtkClipboard *clipboard)
{
    GdkDisplay *display;

    display = gtk_clipboard_get_display (clipboard);
    if (gdk_display_supports_selection_notification (display))
    {
        gtk_clipboard_request_contents (clipboard, gdk_atom_intern_static_string ("TARGETS"),
                                        (GtkClipboardReceivedFunc) received_clipboard_contents, g_object_ref (window));
    }
    else
    {
        GtkAction *action;
        action = gtk_action_group_get_action (window->priv->action_group, "EditPaste");

        /* XFIXES extension not available, make
         * Paste always sensitive */
        gtk_action_set_sensitive (action, TRUE);
    }
}

static void
set_sensitivity_according_to_tab (XedWindow *window,
                                  XedTab    *tab)
{
    XedDocument *doc;
    XedView *view;
    GtkAction *action;
    gboolean b;
    gboolean state_normal;
    gboolean editable;
    XedTabState state;
    GtkClipboard *clipboard;
    gboolean enable_syntax_hl;

    g_return_if_fail (XED_TAB (tab));

    xed_debug (DEBUG_WINDOW);

    enable_syntax_hl = g_settings_get_boolean (window->priv->editor_settings, XED_SETTINGS_SYNTAX_HIGHLIGHTING);

    state = xed_tab_get_state (tab);
    state_normal = (state == XED_TAB_STATE_NORMAL);

    view = xed_tab_get_view (tab);
    editable = gtk_text_view_get_editable (GTK_TEXT_VIEW(view));

    doc = XED_DOCUMENT(gtk_text_view_get_buffer (GTK_TEXT_VIEW (view)));

    clipboard = gtk_widget_get_clipboard (GTK_WIDGET(window),
    GDK_SELECTION_CLIPBOARD);

    action = gtk_action_group_get_action (window->priv->action_group, "FileSave");
    gtk_action_set_sensitive (
                    action,
                    (state_normal || (state == XED_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION)
                    || (state == XED_TAB_STATE_SHOWING_PRINT_PREVIEW))
                    && !xed_document_get_readonly (doc));

    action = gtk_action_group_get_action (window->priv->action_group, "FileSaveAs");
    gtk_action_set_sensitive (
                    action,
                    (state_normal || (state == XED_TAB_STATE_SAVING_ERROR)
                    || (state == XED_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION)
                    || (state == XED_TAB_STATE_SHOWING_PRINT_PREVIEW)));

    action = gtk_action_group_get_action (window->priv->action_group, "FileRevert");
    gtk_action_set_sensitive (
                    action,
                    (state_normal || (state == XED_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION))
                    && !xed_document_is_untitled (doc));

    action = gtk_action_group_get_action (window->priv->action_group, "FilePrintPreview");
    gtk_action_set_sensitive (action, state_normal);

    action = gtk_action_group_get_action (window->priv->action_group, "FilePrint");
    gtk_action_set_sensitive (action, (state_normal || (state == XED_TAB_STATE_SHOWING_PRINT_PREVIEW)));

    action = gtk_action_group_get_action (window->priv->close_action_group, "FileClose");

    gtk_action_set_sensitive (
                    action,
                    (state != XED_TAB_STATE_CLOSING) && (state != XED_TAB_STATE_SAVING)
                    && (state != XED_TAB_STATE_SHOWING_PRINT_PREVIEW)
                    && (state != XED_TAB_STATE_PRINTING) && (state != XED_TAB_STATE_PRINT_PREVIEWING)
                    && (state != XED_TAB_STATE_SAVING_ERROR));

    action = gtk_action_group_get_action (window->priv->action_group, "EditUndo");
    gtk_action_set_sensitive (action, state_normal && gtk_source_buffer_can_undo (GTK_SOURCE_BUFFER(doc)));

    action = gtk_action_group_get_action (window->priv->action_group, "EditRedo");
    gtk_action_set_sensitive (action, state_normal && gtk_source_buffer_can_redo (GTK_SOURCE_BUFFER(doc)));

    action = gtk_action_group_get_action (window->priv->action_group, "EditCut");
    gtk_action_set_sensitive (action,
                    state_normal && editable && gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER(doc)));

    action = gtk_action_group_get_action (window->priv->action_group, "EditCopy");
    gtk_action_set_sensitive (action,
                    (state_normal || state == XED_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION)
                    && gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER(doc)));

    action = gtk_action_group_get_action (window->priv->action_group, "EditPaste");
    if (state_normal && editable)
    {
        set_paste_sensitivity_according_to_clipboard (window, clipboard);
    }
    else
    {
        gtk_action_set_sensitive (action, FALSE);
    }

    action = gtk_action_group_get_action (window->priv->action_group, "EditDelete");
    gtk_action_set_sensitive (action,
                    state_normal && editable && gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER(doc)));

    action = gtk_action_group_get_action (window->priv->action_group, "SearchFind");
    gtk_action_set_sensitive (action, (state_normal || state == XED_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION));

    action = gtk_action_group_get_action (window->priv->action_group, "SearchReplace");
    gtk_action_set_sensitive (action, state_normal && editable);

    b = xed_document_get_can_search_again (doc);
    action = gtk_action_group_get_action (window->priv->action_group, "SearchFindNext");
    gtk_action_set_sensitive (action, (state_normal || state == XED_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION) && b);

    action = gtk_action_group_get_action (window->priv->action_group, "SearchFindPrevious");
    gtk_action_set_sensitive (action, (state_normal || state == XED_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION) && b);

    action = gtk_action_group_get_action (window->priv->action_group, "SearchGoToLine");
    gtk_action_set_sensitive (action, (state_normal || state == XED_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION));

    action = gtk_action_group_get_action (window->priv->action_group, "ViewHighlightMode");
    gtk_action_set_sensitive (action, (state != XED_TAB_STATE_CLOSING) && enable_syntax_hl);

    update_next_prev_doc_sensitivity (window, tab);

    peas_extension_set_call (window->priv->extensions, "update_state");
}

static void
language_toggled (GtkToggleAction *action,
                  XedWindow *window)
{
    XedDocument *doc;
    GtkSourceLanguage *lang;
    const gchar *lang_id;

    if (gtk_toggle_action_get_active (action) == FALSE)
    {
        return;
    }

    doc = xed_window_get_active_document (window);
    if (doc == NULL)
    {
        return;
    }

    lang_id = gtk_action_get_name (GTK_ACTION(action));

    if (strcmp (lang_id, LANGUAGE_NONE) == 0)
    {
        /* Normal (no highlighting) */
        lang = NULL;
    }
    else
    {
        lang = gtk_source_language_manager_get_language (xed_get_language_manager (), lang_id);
        if (lang == NULL)
        {
            g_warning("Could not get language %s\n", lang_id);
        }
    }

    xed_document_set_language (doc, lang);
}

static gchar *
escape_section_name (const gchar *name)
{
    gchar *ret;
    ret = g_markup_escape_text (name, -1);
    /* Replace '/' with '-' to avoid problems in xml paths */
    g_strdelimit (ret, "/", '-');
    return ret;
}

static void
create_language_menu_item (GtkSourceLanguage *lang,
                           gint index,
                           guint ui_id,
                           XedWindow *window)
{
    GtkAction *section_action;
    GtkRadioAction *action;
    GtkAction *normal_action;
    GSList *group;
    const gchar *section;
    gchar *escaped_section;
    const gchar *lang_id;
    const gchar *lang_name;
    gchar *escaped_lang_name;
    gchar *tip;
    gchar *path;

    section = gtk_source_language_get_section (lang);
    escaped_section = escape_section_name (section);

    /* check if the section submenu exists or create it */
    section_action = gtk_action_group_get_action (window->priv->languages_action_group, escaped_section);

    if (section_action == NULL)
    {
        gchar *section_name;
        section_name = xed_utils_escape_underscores (section, -1);
        section_action = gtk_action_new (escaped_section, section_name, NULL,
        NULL);

        g_free (section_name);

        gtk_action_group_add_action (window->priv->languages_action_group, section_action);
        g_object_unref (section_action);

        gtk_ui_manager_add_ui (window->priv->manager, ui_id,
                               "/MenuBar/ViewMenu/ViewHighlightModeMenu/LanguagesMenuPlaceholder", escaped_section,
                               escaped_section, GTK_UI_MANAGER_MENU, FALSE);
    }

    /* now add the language item to the section */
    lang_name = gtk_source_language_get_name (lang);
    lang_id = gtk_source_language_get_id (lang);

    escaped_lang_name = xed_utils_escape_underscores (lang_name, -1);

    tip = g_strdup_printf (_("Use %s highlight mode"), lang_name);
    path = g_strdup_printf ("/MenuBar/ViewMenu/ViewHighlightModeMenu/LanguagesMenuPlaceholder/%s", escaped_section);

    action = gtk_radio_action_new (lang_id, escaped_lang_name, tip, NULL, index);

    g_free (escaped_lang_name);

    /* Action is added with a NULL accel to make the accel overridable */
    gtk_action_group_add_action_with_accel (window->priv->languages_action_group, GTK_ACTION(action), NULL);
    g_object_unref (action);

    /* add the action to the same radio group of the "Normal" action */
    normal_action = gtk_action_group_get_action (window->priv->languages_action_group, LANGUAGE_NONE);
    group = gtk_radio_action_get_group (GTK_RADIO_ACTION(normal_action));
    gtk_radio_action_set_group (action, group);

    g_signal_connect(action, "activate", G_CALLBACK (language_toggled), window);

    gtk_ui_manager_add_ui (window->priv->manager, ui_id, path, lang_id, lang_id, GTK_UI_MANAGER_MENUITEM, FALSE);

    g_free (path);
    g_free (tip);
    g_free (escaped_section);
}

static void
create_languages_menu (XedWindow *window)
{
    GtkRadioAction *action_none;
    GSList *languages;
    GSList *l;
    guint id;
    gint i;

    xed_debug (DEBUG_WINDOW);

    /* add the "Plain Text" item before all the others */

    /* Translators: "Plain Text" means that no highlight mode is selected in the
     * "View->Highlight Mode" submenu and so syntax highlighting is disabled */
    action_none = gtk_radio_action_new (LANGUAGE_NONE, _("Plain Text"), _("Disable syntax highlighting"), NULL, -1);

    gtk_action_group_add_action (window->priv->languages_action_group, GTK_ACTION(action_none));
    g_object_unref (action_none);

    g_signal_connect(action_none, "activate", G_CALLBACK (language_toggled), window);

    id = gtk_ui_manager_new_merge_id (window->priv->manager);

    gtk_ui_manager_add_ui (window->priv->manager, id,
                           "/MenuBar/ViewMenu/ViewHighlightModeMenu/LanguagesMenuPlaceholder",
                           LANGUAGE_NONE, LANGUAGE_NONE, GTK_UI_MANAGER_MENUITEM, TRUE);

    gtk_toggle_action_set_active (GTK_TOGGLE_ACTION(action_none), TRUE);

    /* now add all the known languages */
    languages = xed_language_manager_list_languages_sorted (xed_get_language_manager (), FALSE);

    for (l = languages, i = 0; l != NULL; l = l->next, ++i)
    {
        create_language_menu_item (l->data, i, id, window);
    }

    g_slist_free (languages);
}

static void
update_languages_menu (XedWindow *window)
{
    XedDocument *doc;
    GList *actions;
    GList *l;
    GtkAction *action;
    GtkSourceLanguage *lang;
    const gchar *lang_id;

    doc = xed_window_get_active_document (window);
    if (doc == NULL)
    {
        return;
    }

    lang = xed_document_get_language (doc);
    if (lang != NULL)
    {
        lang_id = gtk_source_language_get_id (lang);
    }
    else
    {
        lang_id = LANGUAGE_NONE;
    }

    actions = gtk_action_group_list_actions (window->priv->languages_action_group);

    /* prevent recursion */
    for (l = actions; l != NULL; l = l->next)
    {
        g_signal_handlers_block_by_func(GTK_ACTION (l->data), G_CALLBACK (language_toggled), window);
    }

    action = gtk_action_group_get_action (window->priv->languages_action_group, lang_id);

    gtk_toggle_action_set_active (GTK_TOGGLE_ACTION(action), TRUE);

    for (l = actions; l != NULL; l = l->next)
    {
        g_signal_handlers_unblock_by_func(GTK_ACTION (l->data), G_CALLBACK (language_toggled), window);
    }

    g_list_free (actions);
}

void
_xed_recent_add (XedWindow   *window,
                 GFile       *location,
                 const gchar *mime)
{
    GtkRecentManager *recent_manager;
    GtkRecentData *recent_data;
    gchar *uri;

    static gchar *groups[2] = { "xed", NULL };

    recent_manager = gtk_recent_manager_get_default ();

    recent_data = g_slice_new(GtkRecentData);

    recent_data->display_name = NULL;
    recent_data->description = NULL;
    recent_data->mime_type = (gchar *) mime;
    recent_data->app_name = (gchar *) g_get_application_name ();
    recent_data->app_exec = g_strjoin (" ", g_get_prgname (), "%u", NULL);
    recent_data->groups = groups;
    recent_data->is_private = FALSE;

    uri = g_file_get_uri (location);

    gtk_recent_manager_add_full (recent_manager, uri, recent_data);

    g_free (uri);
    g_free (recent_data->app_exec);

    g_slice_free(GtkRecentData, recent_data);
}

void
_xed_recent_remove (XedWindow *window,
                    GFile     *location)
{
    GtkRecentManager *recent_manager;
    gchar *uri;

    recent_manager = gtk_recent_manager_get_default ();

    uri = g_file_get_uri (location);
    gtk_recent_manager_remove_item (recent_manager, uri, NULL);
    g_free (uri);
}

static void
open_recent_file (GFile     *location,
                  XedWindow *window)
{
    GSList *locations = NULL;

    locations = g_slist_prepend (locations, (gpointer) location);

    if (xed_commands_load_locations (window, locations, NULL, 0) != 1)
    {
        _xed_recent_remove (window, location);
    }

    g_slist_free (locations);
}

static void
recents_menu_activate (GtkAction *action,
                       XedWindow *window)
{
    GtkRecentInfo *info;
    GFile *location;
    const gchar *uri;

    info = g_object_get_data (G_OBJECT (action), "gtk-recent-info");
    g_return_if_fail (info != NULL);

    uri = gtk_recent_info_get_uri (info);
    location = g_file_new_for_uri (uri);

    if (location)
    {
        open_recent_file (location, window);
        g_object_unref (location);
    }
}

static gint
sort_recents_mru (GtkRecentInfo *a,
                  GtkRecentInfo *b)
{
    return (gtk_recent_info_get_modified (b) - gtk_recent_info_get_modified (a));
}

static void
update_recent_files_menu (XedWindow *window);

static void
recent_manager_changed (GtkRecentManager *manager,
                        XedWindow *window)
{
    /* regenerate the menu when the model changes */
    update_recent_files_menu (window);
}

/*
 * Manually construct the inline recents list in the File menu.
 * Hopefully gtk 2.12 will add support for it.
 */
static void
update_recent_files_menu (XedWindow *window)
{
    XedWindowPrivate *p = window->priv;
    GtkRecentManager *recent_manager;
    gint max_recents;
    GList *actions, *l, *items;
    GList *filtered_items = NULL;
    guint i;

    xed_debug (DEBUG_WINDOW);

    max_recents = g_settings_get_uint (window->priv->ui_settings, XED_SETTINGS_MAX_RECENTS);

    g_return_if_fail(p->recents_action_group != NULL);

    if (p->recents_menu_ui_id != 0)
    {
        gtk_ui_manager_remove_ui (p->manager, p->recents_menu_ui_id);
    }

    actions = gtk_action_group_list_actions (p->recents_action_group);
    for (l = actions; l != NULL; l = l->next)
    {
        g_signal_handlers_disconnect_by_func(GTK_ACTION (l->data), G_CALLBACK (recents_menu_activate), window);
        gtk_action_group_remove_action (p->recents_action_group, GTK_ACTION(l->data));
    }
    g_list_free (actions);

    p->recents_menu_ui_id = gtk_ui_manager_new_merge_id (p->manager);

    recent_manager = gtk_recent_manager_get_default ();
    items = gtk_recent_manager_get_items (recent_manager);

    /* filter */
    for (l = items; l != NULL; l = l->next)
    {
        GtkRecentInfo *info = l->data;
        if (!gtk_recent_info_has_group (info, "xed"))
        {
            continue;
        }

        filtered_items = g_list_prepend (filtered_items, info);
    }

    /* sort */
    filtered_items = g_list_sort (filtered_items, (GCompareFunc) sort_recents_mru);

    i = 0;
    for (l = filtered_items; l != NULL; l = l->next)
    {
        gchar *action_name;
        const gchar *display_name;
        gchar *escaped;
        gchar *label;
        gchar *uri;
        gchar *ruri;
        gchar *tip;
        GtkAction *action;
        GtkRecentInfo *info = l->data;
        GFile *location;

        /* clamp */
        if (i >= max_recents)
        {
            break;
        }

        i++;

        action_name = g_strdup_printf ("recent-info-%d", i);

        display_name = gtk_recent_info_get_display_name (info);
        escaped = xed_utils_escape_underscores (display_name, -1);
        if (i >= 10)
        {
            label = g_strdup_printf ("%d.  %s", i, escaped);
        }
        else
            label = g_strdup_printf ("_%d.  %s", i, escaped);
        g_free (escaped);

        /* gtk_recent_info_get_uri_display (info) is buggy and
         * works only for local files */
        location = g_file_new_for_uri (gtk_recent_info_get_uri (info));
        uri = xed_utils_uri_for_display (location);
        g_object_unref (location);
        ruri = xed_utils_replace_home_dir_with_tilde (uri);
        g_free (uri);

        /* Translators: %s is a URI */
        tip = g_strdup_printf (_("Open '%s'"), ruri);
        g_free (ruri);

        action = gtk_action_new (action_name, label, tip, NULL);

        g_object_set_data_full (G_OBJECT(action), "gtk-recent-info", gtk_recent_info_ref (info),
                                (GDestroyNotify) gtk_recent_info_unref);

        g_signal_connect(action, "activate", G_CALLBACK (recents_menu_activate), window);

        gtk_action_group_add_action (p->recents_action_group, action);
        g_object_unref (action);

        gtk_ui_manager_add_ui (p->manager, p->recents_menu_ui_id, "/MenuBar/FileMenu/FileRecentsPlaceholder",
                               action_name, action_name, GTK_UI_MANAGER_MENUITEM, FALSE);

        g_free (action_name);
        g_free (label);
        g_free (tip);
    }

    g_list_free (filtered_items);

    g_list_foreach (items, (GFunc) gtk_recent_info_unref, NULL);
    g_list_free (items);
}

static void
toolbar_visibility_changed (GtkWidget *toolbar,
                            XedWindow *window)
{
    gboolean visible;
    GtkAction *action;

    visible = gtk_widget_get_visible (toolbar);

    g_settings_set_boolean (window->priv->ui_settings, XED_SETTINGS_TOOLBAR_VISIBLE, visible);

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "ViewToolbar");

    if (gtk_toggle_action_get_active (GTK_TOGGLE_ACTION(action)) != visible)
    {
        gtk_toggle_action_set_active (GTK_TOGGLE_ACTION(action), visible);
    }
}

static GtkWidget *
create_toolbar_button (GtkAction *action)
{
    GtkWidget *button;
    GtkWidget *image;

    button = gtk_button_new ();
    image = gtk_image_new ();

    gtk_button_set_image (GTK_BUTTON (button), image);
    gtk_style_context_add_class (gtk_widget_get_style_context (button), "flat");
    gtk_activatable_set_related_action (GTK_ACTIVATABLE (button), action);
    gtk_button_set_label (GTK_BUTTON (button), NULL);
    gtk_widget_set_tooltip_text (button, gtk_action_get_tooltip (action));

    return button;
}

static void
create_menu_bar_and_toolbar (XedWindow *window,
                             GtkWidget *main_box)
{
    GtkActionGroup *action_group;
    GtkAction *action;
    GtkUIManager *manager;
    GtkRecentManager *recent_manager;
    GError *error = NULL;
    gchar *ui_file;
    GtkWidget *tool_item;
    GtkWidget *tool_box;
    GtkWidget *box;
    GtkWidget *separator;
    GtkWidget *button;

    xed_debug (DEBUG_WINDOW);

    manager = gtk_ui_manager_new ();
    window->priv->manager = manager;

    gtk_window_add_accel_group (GTK_WINDOW(window), gtk_ui_manager_get_accel_group (manager));

    action_group = gtk_action_group_new ("XedWindowAlwaysSensitiveActions");
    gtk_action_group_set_translation_domain (action_group, NULL);
    gtk_action_group_add_actions (action_group, xed_always_sensitive_menu_entries,
                                  G_N_ELEMENTS(xed_always_sensitive_menu_entries), window);
    gtk_action_group_add_toggle_actions (action_group, xed_always_sensitive_toggle_menu_entries,
                                         G_N_ELEMENTS(xed_always_sensitive_toggle_menu_entries), window);

    gtk_ui_manager_insert_action_group (manager, action_group, 0);
    g_object_unref (action_group);
    window->priv->always_sensitive_action_group = action_group;

    action_group = gtk_action_group_new ("XedWindowActions");
    gtk_action_group_set_translation_domain (action_group, NULL);
    gtk_action_group_add_actions (action_group, xed_menu_entries, G_N_ELEMENTS(xed_menu_entries), window);
    gtk_ui_manager_insert_action_group (manager, action_group, 0);
    g_object_unref (action_group);
    window->priv->action_group = action_group;

    action_group = gtk_action_group_new ("XedQuitWindowActions");
    gtk_action_group_set_translation_domain (action_group, NULL);
    gtk_action_group_add_actions (action_group, xed_quit_menu_entries, G_N_ELEMENTS(xed_quit_menu_entries), window);

    gtk_ui_manager_insert_action_group (manager, action_group, 0);
    g_object_unref (action_group);
    window->priv->quit_action_group = action_group;

    action_group = gtk_action_group_new ("XedCloseWindowActions");
    gtk_action_group_set_translation_domain (action_group, NULL);
    gtk_action_group_add_actions (action_group, xed_close_menu_entries, G_N_ELEMENTS(xed_close_menu_entries), window);

    gtk_ui_manager_insert_action_group (manager, action_group, 0);
    g_object_unref (action_group);
    window->priv->close_action_group = action_group;

    action_group = gtk_action_group_new ("XedWindowPanesActions");
    gtk_action_group_set_translation_domain (action_group, NULL);
    gtk_action_group_add_toggle_actions (action_group, xed_panes_toggle_menu_entries,
                                         G_N_ELEMENTS(xed_panes_toggle_menu_entries), window);

    gtk_ui_manager_insert_action_group (manager, action_group, 0);
    g_object_unref (action_group);
    window->priv->panes_action_group = action_group;

    /* now load the UI definition */
    ui_file = xed_dirs_get_ui_file (XED_UIFILE);
    gtk_ui_manager_add_ui_from_file (manager, ui_file, &error);
    if (error != NULL)
    {
        g_warning("Could not merge %s: %s", ui_file, error->message);
        g_error_free (error);
    }
    g_free (ui_file);

    /* show tooltips in the statusbar */
    g_signal_connect(manager, "connect_proxy", G_CALLBACK (connect_proxy_cb), window);
    g_signal_connect(manager, "disconnect_proxy", G_CALLBACK (disconnect_proxy_cb), window);

    /* recent files menu */
    action_group = gtk_action_group_new ("RecentFilesActions");
    gtk_action_group_set_translation_domain (action_group, NULL);
    window->priv->recents_action_group = action_group;
    gtk_ui_manager_insert_action_group (manager, action_group, 0);
    g_object_unref (action_group);

    recent_manager = gtk_recent_manager_get_default ();
    window->priv->recents_handler_id = g_signal_connect(recent_manager, "changed", G_CALLBACK (recent_manager_changed),
                                                        window);
    update_recent_files_menu (window);

    /* languages menu */
    action_group = gtk_action_group_new ("LanguagesActions");
    gtk_action_group_set_translation_domain (action_group, NULL);
    window->priv->languages_action_group = action_group;
    gtk_ui_manager_insert_action_group (manager, action_group, 0);
    g_object_unref (action_group);
    create_languages_menu (window);

    /* list of open documents menu */
    action_group = gtk_action_group_new ("DocumentsListActions");
    gtk_action_group_set_translation_domain (action_group, NULL);
    window->priv->documents_list_action_group = action_group;
    gtk_ui_manager_insert_action_group (manager, action_group, 0);
    g_object_unref (action_group);

    window->priv->menubar = gtk_ui_manager_get_widget (manager, "/MenuBar");
    gtk_box_pack_start (GTK_BOX(main_box), window->priv->menubar, FALSE, FALSE, 0);

    window->priv->toolbar = gtk_toolbar_new ();
    gtk_style_context_add_class (gtk_widget_get_style_context (window->priv->toolbar), GTK_STYLE_CLASS_PRIMARY_TOOLBAR);
    gtk_box_pack_start (GTK_BOX(main_box), window->priv->toolbar, FALSE, FALSE, 0);

    tool_item = gtk_tool_item_new ();
    gtk_tool_item_set_expand (GTK_TOOL_ITEM (tool_item), TRUE);
    gtk_toolbar_insert (GTK_TOOLBAR (window->priv->toolbar), GTK_TOOL_ITEM (tool_item), 0);

    tool_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
    gtk_container_add (GTK_CONTAINER (tool_item), tool_box);

    box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
    gtk_box_pack_start (GTK_BOX (tool_box), box, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "FileNew");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "FileOpen");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "FileSave");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    separator = gtk_separator_new (GTK_ORIENTATION_VERTICAL);
    gtk_box_pack_start (GTK_BOX (tool_box), separator, FALSE, FALSE, 0);

    box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
    gtk_box_pack_start (GTK_BOX (tool_box), box, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "EditUndo");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "EditRedo");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    separator = gtk_separator_new (GTK_ORIENTATION_VERTICAL);
    gtk_box_pack_start (GTK_BOX (tool_box), separator, FALSE, FALSE, 0);

    box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
    gtk_box_pack_start (GTK_BOX (tool_box), box, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "EditCut");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "EditCopy");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "EditPaste");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    separator = gtk_separator_new (GTK_ORIENTATION_VERTICAL);
    gtk_box_pack_start (GTK_BOX (tool_box), separator, FALSE, FALSE, 0);

    box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
    gtk_box_pack_start (GTK_BOX (tool_box), box, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "SearchFind");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "SearchReplace");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    gtk_widget_show_all (GTK_WIDGET (window->priv->toolbar));

    set_toolbar_style (window, NULL);

    g_signal_connect_after(G_OBJECT (window->priv->toolbar), "show", G_CALLBACK (toolbar_visibility_changed), window);
    g_signal_connect_after(G_OBJECT (window->priv->toolbar), "hide", G_CALLBACK (toolbar_visibility_changed), window);
}

static void
documents_list_menu_activate (GtkToggleAction *action,
                              XedWindow *window)
{
    gint n;
    if (gtk_toggle_action_get_active (action) == FALSE)
    {
        return;
    }
    n = gtk_radio_action_get_current_value (GTK_RADIO_ACTION(action));
    gtk_notebook_set_current_page (GTK_NOTEBOOK(window->priv->notebook), n);
}

static gchar *
get_menu_tip_for_tab (XedTab *tab)
{
    XedDocument *doc;
    gchar *uri;
    gchar *ruri;
    gchar *tip;

    doc = xed_tab_get_document (tab);

    uri = xed_document_get_uri_for_display (doc);
    ruri = xed_utils_replace_home_dir_with_tilde (uri);
    g_free (uri);

    /* Translators: %s is a URI */
    tip = g_strdup_printf (_("Activate '%s'"), ruri);
    g_free (ruri);

    return tip;
}

static void
update_documents_list_menu (XedWindow *window)
{
    XedWindowPrivate *p = window->priv;
    GList *actions, *l;
    gint n, i;
    guint id;
    GSList *group = NULL;

    xed_debug (DEBUG_WINDOW);

    g_return_if_fail(p->documents_list_action_group != NULL);

    if (p->documents_list_menu_ui_id != 0)
    {
        gtk_ui_manager_remove_ui (p->manager, p->documents_list_menu_ui_id);
    }

    actions = gtk_action_group_list_actions (p->documents_list_action_group);
    for (l = actions; l != NULL; l = l->next)
    {
        g_signal_handlers_disconnect_by_func(GTK_ACTION (l->data), G_CALLBACK (documents_list_menu_activate), window);
        gtk_action_group_remove_action (p->documents_list_action_group, GTK_ACTION(l->data));
    }
    g_list_free (actions);

    n = gtk_notebook_get_n_pages (GTK_NOTEBOOK(p->notebook));

    id = (n > 0) ? gtk_ui_manager_new_merge_id (p->manager) : 0;

    for (i = 0; i < n; i++)
    {
        GtkWidget *tab;
        GtkRadioAction *action;
        gchar *action_name;
        gchar *tab_name;
        gchar *name;
        gchar *tip;
        gchar *accel;

        tab = gtk_notebook_get_nth_page (GTK_NOTEBOOK(p->notebook), i);

        /* NOTE: the action is associated to the position of the tab in
         * the notebook not to the tab itself! This is needed to work
         * around the gtk+ bug #170727: gtk leaves around the accels
         * of the action. Since the accel depends on the tab position
         * the problem is worked around, action with the same name always
         * get the same accel.
         */
        action_name = g_strdup_printf ("Tab_%d", i);
        tab_name = _xed_tab_get_name (XED_TAB(tab));
        name = xed_utils_escape_underscores (tab_name, -1);
        tip = get_menu_tip_for_tab (XED_TAB(tab));

        /* alt + 1, 2, 3... 0 to switch to the first ten tabs */
        accel = (i < 10) ? g_strdup_printf ("<alt>%d", (i + 1) % 10) : NULL;

        action = gtk_radio_action_new (action_name, name, tip, NULL, i);

        if (group != NULL)
        {
            gtk_radio_action_set_group (action, group);
        }

        /* note that group changes each time we add an action, so it must be updated */
        group = gtk_radio_action_get_group (action);

        gtk_action_group_add_action_with_accel (p->documents_list_action_group, GTK_ACTION(action), accel);

        g_signal_connect(action, "activate", G_CALLBACK (documents_list_menu_activate), window);

        gtk_ui_manager_add_ui (p->manager, id, "/MenuBar/DocumentsMenu/DocumentsListPlaceholder", action_name,
                               action_name, GTK_UI_MANAGER_MENUITEM, FALSE);

        if (XED_TAB (tab) == p->active_tab)
        {
            gtk_toggle_action_set_active (GTK_TOGGLE_ACTION(action), TRUE);
        }

        g_object_unref (action);

        g_free (action_name);
        g_free (tab_name);
        g_free (name);
        g_free (tip);
        g_free (accel);
    }

    p->documents_list_menu_ui_id = id;
}

/* Returns TRUE if status bar is visible */
static gboolean
set_statusbar_style (XedWindow *window,
                     XedWindow *origin)
{
    GtkAction *action;
    gboolean visible;

    if (origin == NULL)
    {
        visible = g_settings_get_boolean (window->priv->ui_settings, XED_SETTINGS_STATUSBAR_VISIBLE);
    }
    else
    {
        visible = gtk_widget_get_visible (origin->priv->statusbar);
    }

    if (visible)
    {
        gtk_widget_show (window->priv->statusbar);
    }
    else
    {
        gtk_widget_hide (window->priv->statusbar);
    }

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "ViewStatusbar");

    if (gtk_toggle_action_get_active (GTK_TOGGLE_ACTION(action)) != visible)
    {
        gtk_toggle_action_set_active (GTK_TOGGLE_ACTION(action), visible);
    }

    return visible;
}

static void
statusbar_visibility_changed (GtkWidget *statusbar,
                              XedWindow *window)
{
    gboolean visible;
    GtkAction *action;

    visible = gtk_widget_get_visible (statusbar);

    g_settings_set_boolean (window->priv->ui_settings, XED_SETTINGS_STATUSBAR_VISIBLE, visible);

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "ViewStatusbar");

    if (gtk_toggle_action_get_active (GTK_TOGGLE_ACTION(action)) != visible)
    {
        gtk_toggle_action_set_active (GTK_TOGGLE_ACTION(action), visible);
    }
}

static void
tab_width_combo_changed (XedStatusComboBox *combo,
                         GtkMenuItem *item,
                         XedWindow *window)
{
    XedView *view;
    guint width_data = 0;

    view = xed_window_get_active_view (window);

    if (!view)
    {
        return;
    }

    width_data = GPOINTER_TO_INT(g_object_get_data (G_OBJECT (item), TAB_WIDTH_DATA));

    if (width_data == 0)
    {
        return;
    }

    g_signal_handler_block (view, window->priv->tab_width_id);
    gtk_source_view_set_tab_width (GTK_SOURCE_VIEW(view), width_data);
    g_signal_handler_unblock (view, window->priv->tab_width_id);
}

static void
use_spaces_toggled (GtkCheckMenuItem *item,
                    XedWindow *window)
{
    XedView *view;

    view = xed_window_get_active_view (window);

    g_signal_handler_block (view, window->priv->spaces_instead_of_tabs_id);
    gtk_source_view_set_insert_spaces_instead_of_tabs (GTK_SOURCE_VIEW(view), gtk_check_menu_item_get_active (item));
    g_signal_handler_unblock (view, window->priv->spaces_instead_of_tabs_id);
}

static void
language_combo_changed (XedStatusComboBox *combo,
                        GtkMenuItem *item,
                        XedWindow *window)
{
    XedDocument *doc;
    GtkSourceLanguage *language;

    doc = xed_window_get_active_document (window);

    if (!doc)
    {
        return;
    }

    language = GTK_SOURCE_LANGUAGE(g_object_get_data (G_OBJECT (item), LANGUAGE_DATA));

    g_signal_handler_block (doc, window->priv->language_changed_id);
    xed_document_set_language (doc, language);
    g_signal_handler_unblock (doc, window->priv->language_changed_id);
}

typedef struct
{
    const gchar *label;
    guint width;
} TabWidthDefinition;

static void
fill_tab_width_combo (XedWindow *window)
{
    static TabWidthDefinition defs[] = { { "2", 2 }, { "4", 4 }, { "8", 8 }, { "", 0 }, /* custom size */
    { NULL, 0 } };

    XedStatusComboBox *combo = XED_STATUS_COMBO_BOX(window->priv->tab_width_combo);
    guint i = 0;
    GtkWidget *item;

    while (defs[i].label != NULL)
    {
        item = gtk_menu_item_new_with_label (defs[i].label);
        g_object_set_data (G_OBJECT(item), TAB_WIDTH_DATA, GINT_TO_POINTER(defs[i].width));

        xed_status_combo_box_add_item (combo, GTK_MENU_ITEM(item), defs[i].label);

        if (defs[i].width != 0)
        {
            gtk_widget_show (item);
        }

        ++i;
    }

    item = gtk_separator_menu_item_new ();
    xed_status_combo_box_add_item (combo, GTK_MENU_ITEM(item), NULL);
    gtk_widget_show (item);

    item = gtk_check_menu_item_new_with_label (_("Use Spaces"));
    xed_status_combo_box_add_item (combo, GTK_MENU_ITEM(item), NULL);
    gtk_widget_show (item);

    g_signal_connect(item, "toggled", G_CALLBACK (use_spaces_toggled), window);
}

static void
fill_language_combo (XedWindow *window)
{
    GtkSourceLanguageManager *manager;
    GSList *languages;
    GSList *item;
    GtkWidget *menu_item;
    const gchar *name;

    manager = xed_get_language_manager ();
    languages = xed_language_manager_list_languages_sorted (manager, FALSE);

    name = _("Plain Text");
    menu_item = gtk_menu_item_new_with_label (name);
    gtk_widget_show (menu_item);

    g_object_set_data (G_OBJECT(menu_item), LANGUAGE_DATA, NULL);
    xed_status_combo_box_add_item (XED_STATUS_COMBO_BOX(window->priv->language_combo), GTK_MENU_ITEM(menu_item), name);

    for (item = languages; item; item = item->next)
    {
        GtkSourceLanguage *lang = GTK_SOURCE_LANGUAGE(item->data);
        name = gtk_source_language_get_name (lang);
        menu_item = gtk_menu_item_new_with_label (name);
        gtk_widget_show (menu_item);
        g_object_set_data_full (G_OBJECT(menu_item), LANGUAGE_DATA, g_object_ref (lang),
                                (GDestroyNotify) g_object_unref);
        xed_status_combo_box_add_item (XED_STATUS_COMBO_BOX(window->priv->language_combo),
                                       GTK_MENU_ITEM(menu_item), name);
    }

    g_slist_free (languages);
}

static void
create_statusbar (XedWindow *window,
                  GtkWidget *main_box)
{
    GtkWidget *image;
    GtkWidget *button_box;
    GtkAction *action;

    xed_debug (DEBUG_WINDOW);

    window->priv->statusbar = xed_statusbar_new ();
    window->priv->searchbar = xed_searchbar_new (GTK_WINDOW (window), TRUE);

    window->priv->generic_message_cid = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->priv->statusbar),
                                                                      "generic_message");
    window->priv->tip_message_cid = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->priv->statusbar),
                                                                  "tip_message");

    gtk_box_pack_end (GTK_BOX( main_box), window->priv->statusbar, FALSE, TRUE, 0);

    gtk_widget_set_margin_left (GTK_WIDGET (window->priv->statusbar), 0);
    gtk_widget_set_margin_right (GTK_WIDGET (window->priv->statusbar), 0);

    window->priv->tab_width_combo = xed_status_combo_box_new (_("Tab Width"));
    gtk_widget_show (window->priv->tab_width_combo);
    gtk_box_pack_end (GTK_BOX (window->priv->statusbar), window->priv->tab_width_combo, FALSE, FALSE, 0);
    gtk_widget_set_margin_bottom (GTK_WIDGET (window->priv->tab_width_combo), 2);
    gtk_widget_set_margin_top (GTK_WIDGET (window->priv->tab_width_combo), 2);

    fill_tab_width_combo (window);

    g_signal_connect(G_OBJECT (window->priv->tab_width_combo), "changed",
                     G_CALLBACK (tab_width_combo_changed), window);

    window->priv->language_combo = xed_status_combo_box_new (NULL);
    gtk_widget_show (window->priv->language_combo);
    gtk_widget_set_margin_bottom (GTK_WIDGET (window->priv->language_combo), 2);
    gtk_widget_set_margin_top (GTK_WIDGET (window->priv->language_combo), 2);
    gtk_box_pack_end (GTK_BOX(window->priv->statusbar), window->priv->language_combo, FALSE, FALSE, 0);

    fill_language_combo (window);

    g_signal_connect(G_OBJECT (window->priv->language_combo), "changed",
                     G_CALLBACK (language_combo_changed), window);

    button_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
    gtk_widget_set_margin_top (button_box, 4);
    gtk_widget_set_margin_bottom (button_box, 4);
    gtk_widget_set_margin_left (button_box, 6);
    gtk_box_pack_start (GTK_BOX (window->priv->statusbar), button_box, FALSE, FALSE, 0);

    window->priv->show_side_pane_button = gtk_toggle_button_new ();
    image = gtk_image_new_from_icon_name ("view-left-pane-symbolic", GTK_ICON_SIZE_INVALID);
    gtk_image_set_pixel_size (GTK_IMAGE (image), 12);
    gtk_container_add (GTK_CONTAINER (window->priv->show_side_pane_button), image);
    gtk_box_pack_start (GTK_BOX (button_box), window->priv->show_side_pane_button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->panes_action_group, "ViewSidePane");
    gtk_activatable_set_related_action (GTK_ACTIVATABLE (window->priv->show_side_pane_button), action);
    gtk_widget_set_tooltip_text (window->priv->show_side_pane_button, gtk_action_get_tooltip (action));

    window->priv->bottom_pane_button_revealer = gtk_revealer_new ();
    gtk_revealer_set_transition_type (GTK_REVEALER (window->priv->bottom_pane_button_revealer),
                                      GTK_REVEALER_TRANSITION_TYPE_SLIDE_RIGHT);
    gtk_box_pack_start (GTK_BOX (button_box), window->priv->bottom_pane_button_revealer, FALSE, FALSE, 0);

    window->priv->show_bottom_pane_button = gtk_toggle_button_new ();
    image = gtk_image_new_from_icon_name ("view-bottom-pane-symbolic", GTK_ICON_SIZE_INVALID);
    gtk_image_set_pixel_size (GTK_IMAGE (image), 12);
    gtk_container_add (GTK_CONTAINER (window->priv->show_bottom_pane_button), image);
    gtk_container_add (GTK_CONTAINER (window->priv->bottom_pane_button_revealer), window->priv->show_bottom_pane_button);

    action = gtk_action_group_get_action (window->priv->panes_action_group, "ViewBottomPane");
    gtk_activatable_set_related_action (GTK_ACTIVATABLE (window->priv->show_bottom_pane_button), action);
    gtk_widget_set_tooltip_text (window->priv->show_bottom_pane_button, gtk_action_get_tooltip (action));

    gtk_widget_show_all (button_box);

    g_signal_connect_after(G_OBJECT (window->priv->statusbar), "show",
                           G_CALLBACK (statusbar_visibility_changed), window);

    g_signal_connect_after(G_OBJECT (window->priv->statusbar), "hide",
                           G_CALLBACK (statusbar_visibility_changed), window);

    set_statusbar_style (window, NULL);

    gtk_box_pack_end (GTK_BOX (main_box), window->priv->searchbar, FALSE, FALSE, 0);

    gtk_box_reorder_child (GTK_BOX (window->priv->statusbar), button_box, 0);
}

static XedWindow *
clone_window (XedWindow *origin)
{
    XedWindow *window;
    GdkScreen *screen;
    XedApp *app;
    gint panel_page;

    xed_debug (DEBUG_WINDOW);

    app = xed_app_get_default ();

    screen = gtk_window_get_screen (GTK_WINDOW(origin));
    window = xed_app_create_window (app, screen);

    if ((origin->priv->window_state & GDK_WINDOW_STATE_MAXIMIZED) != 0)
    {
        gint w, h;
        _xed_window_get_default_size (&w, &h);
        gtk_window_set_default_size (GTK_WINDOW(window), w, h);
        gtk_window_maximize (GTK_WINDOW(window));
    }
    else
    {
        gtk_window_set_default_size (GTK_WINDOW(window), origin->priv->width, origin->priv->height);
        gtk_window_unmaximize (GTK_WINDOW(window));
    }

    if ((origin->priv->window_state & GDK_WINDOW_STATE_STICKY) != 0)
    {
        gtk_window_stick (GTK_WINDOW(window));
    }
    else
    {
        gtk_window_unstick (GTK_WINDOW(window));
    }

    /* set the panes size, the paned position will be set when
     * they are mapped */
    window->priv->side_panel_size = origin->priv->side_panel_size;
    window->priv->bottom_panel_size = origin->priv->bottom_panel_size;

    panel_page = _xed_panel_get_active_item_id (XED_PANEL(origin->priv->side_panel));
    _xed_panel_set_active_item_by_id (XED_PANEL(window->priv->side_panel), panel_page);

    panel_page = _xed_panel_get_active_item_id (XED_PANEL(origin->priv->bottom_panel));
    _xed_panel_set_active_item_by_id (XED_PANEL(window->priv->bottom_panel), panel_page);

    if (gtk_widget_get_visible (origin->priv->side_panel))
    {
        gtk_widget_show (window->priv->side_panel);
    }
    else
    {
        gtk_widget_hide (window->priv->side_panel);
    }

    if (gtk_widget_get_visible (origin->priv->bottom_panel))
    {
        gtk_widget_show (window->priv->bottom_panel);
    }
    else
    {
        gtk_widget_hide (window->priv->bottom_panel);
    }

    set_statusbar_style (window, origin);
    set_toolbar_style (window, origin);

    return window;
}

static void
update_cursor_position_statusbar (GtkTextBuffer *buffer,
                                  XedWindow *window)
{
    gint row, col;
    GtkTextIter iter;
    GtkTextIter start;
    guint tab_size;
    XedView *view;

    xed_debug (DEBUG_WINDOW);

    if (buffer != GTK_TEXT_BUFFER(xed_window_get_active_document (window)))
    {
        return;
    }

    view = xed_window_get_active_view (window);

    gtk_text_buffer_get_iter_at_mark (buffer, &iter, gtk_text_buffer_get_insert (buffer));

    row = gtk_text_iter_get_line (&iter);

    start = iter;
    gtk_text_iter_set_line_offset (&start, 0);
    col = 0;

    tab_size = gtk_source_view_get_tab_width (GTK_SOURCE_VIEW(view));

    while (!gtk_text_iter_equal (&start, &iter))
    {
        /* FIXME: Are we Unicode compliant here? */
        if (gtk_text_iter_get_char (&start) == '\t')
        {
            col += (tab_size - (col % tab_size));
        }
        else
        {
            ++col;
        }
        gtk_text_iter_forward_char (&start);
    }

    xed_statusbar_set_cursor_position (XED_STATUSBAR(window->priv->statusbar), row + 1, col + 1);
}

static void
update_overwrite_mode_statusbar (GtkTextView *view,
                                 XedWindow *window)
{
    if (view != GTK_TEXT_VIEW(xed_window_get_active_view (window)))
    {
        return;
    }

    /* Note that we have to use !gtk_text_view_get_overwrite since we
     are in the in the signal handler of "toggle overwrite" that is
     G_SIGNAL_RUN_LAST
     */
    xed_statusbar_set_overwrite (XED_STATUSBAR(window->priv->statusbar), !gtk_text_view_get_overwrite (view));
}

#define MAX_TITLE_LENGTH 100

static void
set_title (XedWindow *window)
{
    XedDocument *doc = NULL;
    gchar *name;
    gchar *dirname = NULL;
    gchar *title = NULL;
    gint len;

    if (window->priv->active_tab == NULL)
    {
        gtk_window_set_title (GTK_WINDOW(window), "Xed");
        return;
    }

    doc = xed_tab_get_document (window->priv->active_tab);
    g_return_if_fail(doc != NULL);

    name = xed_document_get_short_name_for_display (doc);

    len = g_utf8_strlen (name, -1);

    /* if the name is awfully long, truncate it and be done with it,
     * otherwise also show the directory (ellipsized if needed)
     */
    if (len > MAX_TITLE_LENGTH)
    {
        gchar *tmp;
        tmp = xed_utils_str_middle_truncate (name, MAX_TITLE_LENGTH);
        g_free (name);
        name = tmp;
    }
    else
    {
        GFile *file;
        file = xed_document_get_location (doc);
        if (file != NULL)
        {
            gchar *str;
            str = xed_utils_location_get_dirname_for_display (file);
            g_object_unref (file);

            /* use the remaining space for the dir, but use a min of 20 chars
             * so that we do not end up with a dirname like "(a...b)".
             * This means that in the worst case when the filename is long 99
             * we have a title long 99 + 20, but I think it's a rare enough
             * case to be acceptable. It's justa darn title afterall :)
             */
            dirname = xed_utils_str_middle_truncate (str, MAX(20, MAX_TITLE_LENGTH - len));
            g_free (str);
        }
    }

    if (gtk_text_buffer_get_modified (GTK_TEXT_BUFFER(doc)))
    {
        gchar *tmp_name;
        tmp_name = g_strdup_printf ("*%s", name);
        g_free (name);
        name = tmp_name;
    }

    if (xed_document_get_readonly (doc))
    {
        if (dirname != NULL)
        {
            title = g_strdup_printf ("%s [%s] (%s)", name, _("Read-Only"), dirname);
        }
        else
        {
            title = g_strdup_printf ("%s [%s]", name, _("Read-Only"));
        }
    }
    else
    {
        if (dirname != NULL)
        {
            title = g_strdup_printf ("%s (%s)", name, dirname);
        }
        else
        {
            title = g_strdup_printf ("%s", name);
        }
    }

    gtk_window_set_title (GTK_WINDOW(window), title);

    g_free (dirname);
    g_free (name);
    g_free (title);
}

#undef MAX_TITLE_LENGTH

static void
set_tab_width_item_blocked (XedWindow *window,
                            GtkMenuItem *item)
{
    g_signal_handlers_block_by_func(window->priv->tab_width_combo, tab_width_combo_changed, window);
    xed_status_combo_box_set_item (XED_STATUS_COMBO_BOX(window->priv->tab_width_combo), item);
    g_signal_handlers_unblock_by_func(window->priv->tab_width_combo, tab_width_combo_changed, window);
}

static void
spaces_instead_of_tabs_changed (GObject *object,
                                GParamSpec *pspec,
                                XedWindow *window)
{
    XedView *view = XED_VIEW(object);
    gboolean active = gtk_source_view_get_insert_spaces_instead_of_tabs (GTK_SOURCE_VIEW(view));
    GList *children = xed_status_combo_box_get_items (XED_STATUS_COMBO_BOX(window->priv->tab_width_combo));
    GtkCheckMenuItem *item;
    item = GTK_CHECK_MENU_ITEM(g_list_last (children)->data);
    gtk_check_menu_item_set_active (item, active);
    g_list_free (children);
}

static void
tab_width_changed (GObject *object,
                   GParamSpec *pspec,
                   XedWindow *window)
{
    GList *items;
    GList *item;
    XedStatusComboBox *combo = XED_STATUS_COMBO_BOX(window->priv->tab_width_combo);
    guint new_tab_width;
    gboolean found = FALSE;

    items = xed_status_combo_box_get_items (combo);

    new_tab_width = gtk_source_view_get_tab_width (GTK_SOURCE_VIEW(object));

    for (item = items; item; item = item->next)
    {
        guint tab_width = GPOINTER_TO_INT(g_object_get_data (G_OBJECT (item->data), TAB_WIDTH_DATA));

        if (tab_width == new_tab_width)
        {
            set_tab_width_item_blocked (window, GTK_MENU_ITEM(item->data));
            found = TRUE;
        }

        if (GTK_IS_SEPARATOR_MENU_ITEM(item->next->data))
        {
            if (!found)
            {
                /* Set for the last item the custom thing */
                gchar *text;

                text = g_strdup_printf ("%u", new_tab_width);
                xed_status_combo_box_set_item_text (combo, GTK_MENU_ITEM(item->data), text);
                gtk_label_set_text (GTK_LABEL(gtk_bin_get_child (GTK_BIN (item->data))), text);

                set_tab_width_item_blocked (window, GTK_MENU_ITEM(item->data));
                gtk_widget_show (GTK_WIDGET(item->data));
            }
            else
            {
                gtk_widget_hide (GTK_WIDGET(item->data));
            }

            break;
        }
    }

    g_list_free (items);
}

static void
language_changed (GObject *object,
                  GParamSpec *pspec,
                  XedWindow *window)
{
    GList *items;
    GList *item;
    XedStatusComboBox *combo = XED_STATUS_COMBO_BOX(window->priv->language_combo);
    GtkSourceLanguage *new_language;
    const gchar *new_id;

    items = xed_status_combo_box_get_items (combo);

    new_language = gtk_source_buffer_get_language (GTK_SOURCE_BUFFER(object));

    if (new_language)
    {
        new_id = gtk_source_language_get_id (new_language);
    }
    else
    {
        new_id = NULL;
    }

    for (item = items; item; item = item->next)
    {
        GtkSourceLanguage *lang = g_object_get_data (G_OBJECT(item->data),
        LANGUAGE_DATA);
        if ((new_id == NULL && lang == NULL)
            || (new_id != NULL && lang != NULL && strcmp (gtk_source_language_get_id (lang), new_id) == 0))
        {
            g_signal_handlers_block_by_func(window->priv->language_combo, language_combo_changed, window);
            xed_status_combo_box_set_item (XED_STATUS_COMBO_BOX(window->priv->language_combo),
                                           GTK_MENU_ITEM(item->data));
            g_signal_handlers_unblock_by_func(window->priv->language_combo, language_combo_changed, window);
        }
    }

    g_list_free (items);
}

static void
word_wrap_changed (GObject *object,
                   GParamSpec *pspec,
                   XedWindow *window)
{
    XedView *view;
    GtkWrapMode wrap_mode;
    GtkAction *action;
    gboolean wrap_enabled;

    view = XED_VIEW (object);
    wrap_mode = gtk_text_view_get_wrap_mode (GTK_TEXT_VIEW (view));
    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "ViewWordWrap");

    if (wrap_mode == GTK_WRAP_NONE)
    {
        wrap_enabled = FALSE;
    }
    else
    {
        wrap_enabled = TRUE;
    }

    g_signal_handlers_block_by_func (action, G_CALLBACK (_xed_cmd_view_toggle_word_wrap), window);
    gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), wrap_enabled);
    g_signal_handlers_unblock_by_func (action, G_CALLBACK (_xed_cmd_view_toggle_word_wrap), window);
}

static void
notebook_switch_page (GtkNotebook *book,
                      GtkWidget *pg,
                      gint page_num,
                      XedWindow *window)
{
    XedView *view;
    XedTab *tab;
    GtkAction *action;
    gchar *action_name;

    /* CHECK: I don't know why but it seems notebook_switch_page is called
     two times every time the user change the active tab */

    tab = XED_TAB(gtk_notebook_get_nth_page (book, page_num));
    if (tab == window->priv->active_tab)
    {
        return;
    }

    if (window->priv->active_tab)
    {
        if (window->priv->tab_width_id)
        {
            g_signal_handler_disconnect (xed_tab_get_view (window->priv->active_tab), window->priv->tab_width_id);
            window->priv->tab_width_id = 0;
        }

        if (window->priv->spaces_instead_of_tabs_id)
        {
            g_signal_handler_disconnect (xed_tab_get_view (window->priv->active_tab), window->priv->spaces_instead_of_tabs_id);
            window->priv->spaces_instead_of_tabs_id = 0;
        }

        if (window->priv->use_word_wrap_id)
        {
            g_signal_handler_disconnect (xed_tab_get_view (window->priv->active_tab), window->priv->use_word_wrap_id);
            window->priv->use_word_wrap_id = 0;
        }
    }

    /* set the active tab */
    window->priv->active_tab = tab;

    set_title (window);
    set_sensitivity_according_to_tab (window, tab);

    /* activate the right item in the documents menu */
    action_name = g_strdup_printf ("Tab_%d", page_num);
    action = gtk_action_group_get_action (window->priv->documents_list_action_group, action_name);

    /* sometimes the action doesn't exist yet, and the proper action
     * is set active during the documents list menu creation
     * CHECK: would it be nicer if active_tab was a property and we monitored the notify signal?
     */
    if (action != NULL)
    {
        gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);
    }

    g_free (action_name);

    /* update the syntax menu */
    update_languages_menu (window);

    view = xed_tab_get_view (tab);

    /* sync the statusbar */
    update_cursor_position_statusbar (GTK_TEXT_BUFFER (xed_tab_get_document (tab)), window);
    xed_statusbar_set_overwrite (XED_STATUSBAR (window->priv->statusbar),
                                 gtk_text_view_get_overwrite (GTK_TEXT_VIEW(view)));

    gtk_widget_show (window->priv->tab_width_combo);
    gtk_widget_show (window->priv->language_combo);

    window->priv->tab_width_id = g_signal_connect(view, "notify::tab-width", G_CALLBACK (tab_width_changed), window);

    window->priv->spaces_instead_of_tabs_id = g_signal_connect(view, "notify::insert-spaces-instead-of-tabs",
                                                               G_CALLBACK (spaces_instead_of_tabs_changed), window);

    window->priv->language_changed_id = g_signal_connect(xed_tab_get_document (tab), "notify::language",
                                                         G_CALLBACK (language_changed), window);

    window->priv->use_word_wrap_id = g_signal_connect (view, "notify::wrap-mode",
                                                       G_CALLBACK (word_wrap_changed), window);

    /* call it for the first time */
    tab_width_changed (G_OBJECT (view), NULL, window);
    spaces_instead_of_tabs_changed (G_OBJECT (view), NULL, window);
    language_changed (G_OBJECT (xed_tab_get_document (tab)), NULL, window);
    word_wrap_changed (G_OBJECT (view), NULL, window);

    g_signal_emit (G_OBJECT (window), signals[ACTIVE_TAB_CHANGED], 0, window->priv->active_tab);
}

static void
set_sensitivity_according_to_window_state (XedWindow *window)
{
    GtkAction *action;

    /* We disable File->Quit/SaveAll/CloseAll while printing to avoid to have two
     operations (save and print/print preview) that uses the message area at
     the same time (may be we can remove this limitation in the future) */
    /* We disable File->Quit/CloseAll if state is saving since saving cannot be
     cancelled (may be we can remove this limitation in the future) */
    gtk_action_group_set_sensitive (
                    window->priv->quit_action_group,
                    !(window->priv->state & XED_WINDOW_STATE_SAVING)
                    && !(window->priv->state & XED_WINDOW_STATE_PRINTING));

    action = gtk_action_group_get_action (window->priv->action_group, "FileCloseAll");
    gtk_action_set_sensitive (
                    action,
                    !(window->priv->state & XED_WINDOW_STATE_SAVING)
                    && !(window->priv->state & XED_WINDOW_STATE_PRINTING));

    action = gtk_action_group_get_action (window->priv->action_group, "FileSaveAll");
    gtk_action_set_sensitive (action, !(window->priv->state & XED_WINDOW_STATE_PRINTING));

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "FileNew");
    gtk_action_set_sensitive (action, !(window->priv->state & XED_WINDOW_STATE_SAVING_SESSION));

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "FileOpen");
    gtk_action_set_sensitive (action, !(window->priv->state & XED_WINDOW_STATE_SAVING_SESSION));

    gtk_action_group_set_sensitive (window->priv->recents_action_group,
                                    !(window->priv->state & XED_WINDOW_STATE_SAVING_SESSION));

    xed_notebook_set_close_buttons_sensitive (XED_NOTEBOOK(window->priv->notebook),
                                              !(window->priv->state & XED_WINDOW_STATE_SAVING_SESSION));

    xed_notebook_set_tab_drag_and_drop_enabled (XED_NOTEBOOK(window->priv->notebook),
                                                !(window->priv->state & XED_WINDOW_STATE_SAVING_SESSION));

    if ((window->priv->state & XED_WINDOW_STATE_SAVING_SESSION) != 0)
    {
        /* TODO: If we really care, Find could be active
         * when in SAVING_SESSION state */
        if (gtk_action_group_get_sensitive (window->priv->action_group))
        {
            gtk_action_group_set_sensitive (window->priv->action_group, FALSE);
        }
        if (gtk_action_group_get_sensitive (window->priv->quit_action_group))
        {
            gtk_action_group_set_sensitive (window->priv->quit_action_group, FALSE);
        }
        if (gtk_action_group_get_sensitive (window->priv->close_action_group))
        {
            gtk_action_group_set_sensitive (window->priv->close_action_group, FALSE);
        }
    }
    else
    {
        if (!gtk_action_group_get_sensitive (window->priv->action_group))
        {
            gtk_action_group_set_sensitive (window->priv->action_group, window->priv->num_tabs > 0);
        }
        if (!gtk_action_group_get_sensitive (window->priv->quit_action_group))
        {
            gtk_action_group_set_sensitive (window->priv->quit_action_group, window->priv->num_tabs > 0);
        }
        if (!gtk_action_group_get_sensitive (window->priv->close_action_group))
        {
            gtk_action_group_set_sensitive (window->priv->close_action_group, window->priv->num_tabs > 0);
        }
    }
}

static void
update_tab_autosave (GtkWidget *widget,
                     gpointer data)
{
    XedTab *tab = XED_TAB(widget);
    gboolean *enabled = (gboolean *) data;
    xed_tab_set_auto_save_enabled (tab, *enabled);
}

static void
analyze_tab_state (XedTab *tab,
                   XedWindow *window)
{
    XedTabState ts;

    ts = xed_tab_get_state (tab);

    switch (ts)
    {
        case XED_TAB_STATE_LOADING:
        case XED_TAB_STATE_REVERTING:
            window->priv->state |= XED_WINDOW_STATE_LOADING;
            break;
        case XED_TAB_STATE_SAVING:
            window->priv->state |= XED_WINDOW_STATE_SAVING;
            break;
        case XED_TAB_STATE_PRINTING:
        case XED_TAB_STATE_PRINT_PREVIEWING:
            window->priv->state |= XED_WINDOW_STATE_PRINTING;
            break;
        case XED_TAB_STATE_LOADING_ERROR:
        case XED_TAB_STATE_REVERTING_ERROR:
        case XED_TAB_STATE_SAVING_ERROR:
        case XED_TAB_STATE_GENERIC_ERROR:
            window->priv->state |= XED_WINDOW_STATE_ERROR;
            ++window->priv->num_tabs_with_error;
            break;
        default:
            /* NOP */
            break;
    }
}

static void
update_window_state (XedWindow *window)
{
    XedWindowState old_ws;
    gint old_num_of_errors;

    xed_debug_message (DEBUG_WINDOW, "Old state: %x", window->priv->state);

    old_ws = window->priv->state;
    old_num_of_errors = window->priv->num_tabs_with_error;

    window->priv->state = old_ws & XED_WINDOW_STATE_SAVING_SESSION;

    window->priv->num_tabs_with_error = 0;

    gtk_container_foreach (GTK_CONTAINER(window->priv->notebook), (GtkCallback) analyze_tab_state, window);

    xed_debug_message (DEBUG_WINDOW, "New state: %x", window->priv->state);

    if (old_ws != window->priv->state)
    {
        set_sensitivity_according_to_window_state (window);
        xed_statusbar_set_window_state (XED_STATUSBAR(window->priv->statusbar), window->priv->state,
                                        window->priv->num_tabs_with_error);
        g_object_notify (G_OBJECT(window), "state");
    }
    else if (old_num_of_errors != window->priv->num_tabs_with_error)
    {
        xed_statusbar_set_window_state (XED_STATUSBAR(window->priv->statusbar), window->priv->state,
                                        window->priv->num_tabs_with_error);
    }
}

static void
sync_state (XedTab *tab,
            GParamSpec *pspec,
            XedWindow *window)
{
    xed_debug (DEBUG_WINDOW);
    update_window_state (window);
    if (tab != window->priv->active_tab)
    {
        return;
    }
    set_sensitivity_according_to_tab (window, tab);
    g_signal_emit (G_OBJECT(window), signals[ACTIVE_TAB_STATE_CHANGED], 0);
}

static void
sync_name (XedTab *tab,
           GParamSpec *pspec,
           XedWindow *window)
{
    GtkAction *action;
    gchar *action_name;
    gchar *tab_name;
    gchar *escaped_name;
    gchar *tip;
    gint n;
    XedDocument *doc;

    if (tab == window->priv->active_tab)
    {
        set_title (window);
        doc = xed_tab_get_document (tab);
        action = gtk_action_group_get_action (window->priv->action_group, "FileRevert");
        gtk_action_set_sensitive (action, !xed_document_is_untitled (doc));
    }

    /* sync the item in the documents list menu */
    n = gtk_notebook_page_num (GTK_NOTEBOOK(window->priv->notebook), GTK_WIDGET(tab));
    action_name = g_strdup_printf ("Tab_%d", n);
    action = gtk_action_group_get_action (window->priv->documents_list_action_group, action_name);
    g_free (action_name);
    g_return_if_fail(action != NULL);

    tab_name = _xed_tab_get_name (tab);
    escaped_name = xed_utils_escape_underscores (tab_name, -1);
    tip = get_menu_tip_for_tab (tab);

    g_object_set (action, "label", escaped_name, NULL);
    g_object_set (action, "tooltip", tip, NULL);

    g_free (tab_name);
    g_free (escaped_name);
    g_free (tip);

    peas_extension_set_call (window->priv->extensions, "update_state");
}

static XedWindow *
get_drop_window (GtkWidget *widget)
{
    GtkWidget *target_window;
    target_window = gtk_widget_get_toplevel (widget);
    g_return_val_if_fail(XED_IS_WINDOW (target_window), NULL);

    if ((XED_WINDOW(target_window)->priv->state & XED_WINDOW_STATE_SAVING_SESSION) != 0)
    {
        return NULL;
    }

    return XED_WINDOW(target_window);
}

static void
load_uris_from_drop (XedWindow *window,
                     gchar    **uri_list)
{
    GSList *locations = NULL;
    gint i;

    if (uri_list == NULL)
    {
        return;
    }

    for (i = 0; uri_list[i] != NULL; ++i)
    {
        locations = g_slist_prepend (locations, g_file_new_for_uri (uri_list[i]));
    }

    locations = g_slist_reverse (locations);
    xed_commands_load_locations (window, locations, NULL, 0);

    g_slist_foreach (locations, (GFunc) g_object_unref, NULL);
    g_slist_free (locations);
}

/* Handle drops on the XedWindow */
static void
drag_data_received_cb (GtkWidget *widget,
                       GdkDragContext *context,
                       gint x,
                       gint y,
                       GtkSelectionData *selection_data,
                       guint info,
                       guint timestamp,
                       gpointer data)
{
    XedWindow *window;
    gchar **uri_list;

    window = get_drop_window (widget);
    if (window == NULL)
    {
        return;
    }

    if (info == TARGET_URI_LIST)
    {
        uri_list = xed_utils_drop_get_uris (selection_data);
        load_uris_from_drop (window, uri_list);
        g_strfreev (uri_list);
    }
}

/* Handle drops on the XedView */
static void
drop_uris_cb (GtkWidget *widget,
              gchar **uri_list)
{
    XedWindow *window;
    window = get_drop_window (widget);
    if (window == NULL)
    {
        return;
    }
    load_uris_from_drop (window, uri_list);
}

static void
fullscreen_controls_show (XedWindow *window)
{
    GdkScreen *screen;
    GdkRectangle fs_rect;
    gint min_h, nat_h;

    screen = gtk_window_get_screen (GTK_WINDOW (window));
    gdk_screen_get_monitor_geometry (
                    screen, gdk_screen_get_monitor_at_window (screen, gtk_widget_get_window (GTK_WIDGET(window))),
                    &fs_rect);

    gtk_widget_get_preferred_height (window->priv->fullscreen_controls_container, &min_h, &nat_h);
    gtk_window_resize (GTK_WINDOW (window->priv->fullscreen_controls), fs_rect.width, nat_h);
    gtk_window_move (GTK_WINDOW (window->priv->fullscreen_controls), fs_rect.x, fs_rect.y - nat_h + 1);

    gtk_widget_show_all (window->priv->fullscreen_controls);
}

static gboolean
run_fullscreen_animation (gpointer data)
{
    XedWindow *window = XED_WINDOW(data);
    GdkScreen *screen;
    GdkRectangle fs_rect;
    gint x, y;

    screen = gtk_window_get_screen (GTK_WINDOW(window));
    gdk_screen_get_monitor_geometry (screen,
                    gdk_screen_get_monitor_at_window (screen, gtk_widget_get_window (GTK_WIDGET(window))),
                    &fs_rect);

    gtk_window_get_position (GTK_WINDOW(window->priv->fullscreen_controls), &x, &y);

    if (window->priv->fullscreen_animation_enter)
    {
        if (y == fs_rect.y)
        {
            window->priv->fullscreen_animation_timeout_id = 0;
            return FALSE;
        }
        else
        {
            gtk_window_move (GTK_WINDOW(window->priv->fullscreen_controls), x, y + 1);
            return TRUE;
        }
    }
    else
    {
        gint w, h;
        gtk_window_get_size (GTK_WINDOW(window->priv->fullscreen_controls), &w, &h);
        if (y == fs_rect.y - h + 1)
        {
            window->priv->fullscreen_animation_timeout_id = 0;
            return FALSE;
        }
        else
        {
            gtk_window_move (GTK_WINDOW(window->priv->fullscreen_controls), x, y - 1);
            return TRUE;
        }
    }
}

static void
show_hide_fullscreen_toolbar (XedWindow *window,
                              gboolean show,
                              gint height)
{
    GtkSettings *settings;
    gboolean enable_animations;

    settings = gtk_widget_get_settings (GTK_WIDGET(window));
    g_object_get (G_OBJECT(settings), "gtk-enable-animations", &enable_animations, NULL);

    if (enable_animations)
    {
        window->priv->fullscreen_animation_enter = show;
        if (window->priv->fullscreen_animation_timeout_id == 0)
        {
            window->priv->fullscreen_animation_timeout_id = g_timeout_add (FULLSCREEN_ANIMATION_SPEED,
                                                                    (GSourceFunc) run_fullscreen_animation, window);
        }
    }
    else
    {
        GdkRectangle fs_rect;
        GdkScreen *screen;
        screen = gtk_window_get_screen (GTK_WINDOW(window));
        gdk_screen_get_monitor_geometry (screen,
                    gdk_screen_get_monitor_at_window (screen, gtk_widget_get_window (GTK_WIDGET(window))),
                    &fs_rect);

        if (show)
        {
            gtk_window_move (GTK_WINDOW(window->priv->fullscreen_controls), fs_rect.x, fs_rect.y);
        }
        else
        {
            gtk_window_move (GTK_WINDOW(window->priv->fullscreen_controls), fs_rect.x, fs_rect.y - height + 1);
        }
    }

}

static gboolean
on_fullscreen_controls_enter_notify_event (GtkWidget *widget,
                                           GdkEventCrossing *event,
                                           XedWindow *window)
{
    show_hide_fullscreen_toolbar (window, TRUE, 0);
    return FALSE;
}

static gboolean
on_fullscreen_controls_leave_notify_event (GtkWidget *widget,
                                           GdkEventCrossing *event,
                                           XedWindow *window)
{
    GdkDisplay *display;
    GdkScreen *screen;
    gint w, h;
    gint x, y;

    display = gdk_display_get_default ();
    screen = gtk_window_get_screen (GTK_WINDOW(window));

    gtk_window_get_size (GTK_WINDOW(window->priv->fullscreen_controls), &w, &h);
    gdk_display_get_pointer (display, &screen, &x, &y, NULL);

    /* gtk seems to emit leave notify when clicking on tool items,
     * work around it by checking the coordinates
     */
    if (y >= h)
    {
        show_hide_fullscreen_toolbar (window, FALSE, h);
    }

    return FALSE;
}

static void
fullscreen_controls_build (XedWindow *window)
{
    XedWindowPrivate *priv = window->priv;
    GtkAction *action;
    GtkWidget *box;
    GtkWidget *fullscreen_btn;
    GtkWidget *separator;
    GtkWidget *button;

    if (priv->fullscreen_controls != NULL)
    {
        return;
    }

    priv->fullscreen_controls = gtk_window_new (GTK_WINDOW_POPUP);

    gtk_window_set_transient_for (GTK_WINDOW(priv->fullscreen_controls), &window->window);

    window->priv->fullscreen_controls_container = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
    gtk_container_set_border_width (GTK_CONTAINER (window->priv->fullscreen_controls_container), 6);
    gtk_container_add (GTK_CONTAINER (priv->fullscreen_controls), window->priv->fullscreen_controls_container);

    box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
    gtk_widget_set_vexpand (box, FALSE);
    gtk_box_pack_start (GTK_BOX (window->priv->fullscreen_controls_container), box, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "FileNew");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "FileOpen");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "FileSave");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    separator = gtk_separator_new (GTK_ORIENTATION_VERTICAL);
    gtk_box_pack_start (GTK_BOX (box), separator, FALSE, FALSE, 6);

    action = gtk_action_group_get_action (window->priv->action_group, "EditUndo");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "EditRedo");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    separator = gtk_separator_new (GTK_ORIENTATION_VERTICAL);
    gtk_box_pack_start (GTK_BOX (box), separator, FALSE, FALSE, 6);

    action = gtk_action_group_get_action (window->priv->action_group, "EditCut");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "EditCopy");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "EditPaste");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    separator = gtk_separator_new (GTK_ORIENTATION_VERTICAL);
    gtk_box_pack_start (GTK_BOX (box), separator, FALSE, FALSE, 6);

    action = gtk_action_group_get_action (window->priv->action_group, "SearchFind");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (window->priv->action_group, "SearchReplace");
    button = create_toolbar_button (action);
    gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);

    action = gtk_action_group_get_action (priv->always_sensitive_action_group, "LeaveFullscreen");
    g_object_set (action, "is-important", TRUE, NULL);
    fullscreen_btn = create_toolbar_button (action);
    gtk_box_pack_end (GTK_BOX (box), fullscreen_btn, FALSE, FALSE, 0);

    gtk_widget_show_all (window->priv->fullscreen_controls_container);

    g_signal_connect(priv->fullscreen_controls, "enter-notify-event",
                     G_CALLBACK (on_fullscreen_controls_enter_notify_event), window);

    g_signal_connect(priv->fullscreen_controls, "leave-notify-event",
                     G_CALLBACK (on_fullscreen_controls_leave_notify_event), window);
}

static void
can_search_again (XedDocument *doc,
                  GParamSpec *pspec,
                  XedWindow *window)
{
    gboolean sensitive;
    GtkAction *action;

    if (doc != xed_window_get_active_document (window))
    {
        return;
    }

    sensitive = xed_document_get_can_search_again (doc);

    action = gtk_action_group_get_action (window->priv->action_group, "SearchFindNext");
    gtk_action_set_sensitive (action, sensitive);

    action = gtk_action_group_get_action (window->priv->action_group, "SearchFindPrevious");
    gtk_action_set_sensitive (action, sensitive);
}

static void
can_undo (XedDocument *doc,
          GParamSpec *pspec,
          XedWindow *window)
{
    GtkAction *action;
    gboolean sensitive;

    sensitive = gtk_source_buffer_can_undo (GTK_SOURCE_BUFFER(doc));

    if (doc != xed_window_get_active_document (window))
    {
        return;
    }

    action = gtk_action_group_get_action (window->priv->action_group, "EditUndo");
    gtk_action_set_sensitive (action, sensitive);
}

static void
can_redo (XedDocument *doc,
          GParamSpec *pspec,
          XedWindow *window)
{
    GtkAction *action;
    gboolean sensitive;

    sensitive = gtk_source_buffer_can_redo (GTK_SOURCE_BUFFER(doc));

    if (doc != xed_window_get_active_document (window))
    {
        return;
    }

    action = gtk_action_group_get_action (window->priv->action_group, "EditRedo");
    gtk_action_set_sensitive (action, sensitive);
}

static void
selection_changed (XedDocument *doc,
                   GParamSpec *pspec,
                   XedWindow *window)
{
    XedTab *tab;
    XedView *view;
    GtkAction *action;
    XedTabState state;
    gboolean state_normal;
    gboolean editable;

    xed_debug (DEBUG_WINDOW);

    if (doc != xed_window_get_active_document (window))
    {
        return;
    }

    tab = xed_tab_get_from_document (doc);
    state = xed_tab_get_state (tab);
    state_normal = (state == XED_TAB_STATE_NORMAL);

    view = xed_tab_get_view (tab);
    editable = gtk_text_view_get_editable (GTK_TEXT_VIEW(view));

    action = gtk_action_group_get_action (window->priv->action_group, "EditCut");
    gtk_action_set_sensitive (action,
                    state_normal && editable && gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER(doc)));

    action = gtk_action_group_get_action (window->priv->action_group, "EditCopy");
    gtk_action_set_sensitive (action,
                    (state_normal || state == XED_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION)
                    && gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER(doc)));

    action = gtk_action_group_get_action (window->priv->action_group, "EditDelete");
    gtk_action_set_sensitive (action,
                    state_normal && editable && gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER(doc)));

    peas_extension_set_call (window->priv->extensions, "update_state");
}

static void
sync_languages_menu (XedDocument *doc,
                     GParamSpec *pspec,
                     XedWindow *window)
{
    update_languages_menu (window);
    peas_extension_set_call (window->priv->extensions, "update_state");
}

static void
readonly_changed (XedDocument *doc,
                  GParamSpec *pspec,
                  XedWindow *window)
{
    set_sensitivity_according_to_tab (window, window->priv->active_tab);
    sync_name (window->priv->active_tab, NULL, window);
    peas_extension_set_call (window->priv->extensions, "update_state");
}

static void
editable_changed (XedView *view,
                  GParamSpec *arg1,
                  XedWindow *window)
{
    peas_extension_set_call (window->priv->extensions, "update_state");
}

static void
update_sensitivity_according_to_open_tabs (XedWindow *window)
{
    GtkAction *action;

    /* Set sensitivity */
    gtk_action_group_set_sensitive (window->priv->action_group, window->priv->num_tabs != 0);

    action = gtk_action_group_get_action (window->priv->action_group, "DocumentsMoveToNewWindow");
    gtk_action_set_sensitive (action, window->priv->num_tabs > 1);
    gtk_action_group_set_sensitive (window->priv->close_action_group, window->priv->num_tabs != 0);
}

static void
notebook_tab_added (XedNotebook *notebook,
                    XedTab *tab,
                    XedWindow *window)
{
    XedView *view;
    XedDocument *doc;

    xed_debug (DEBUG_WINDOW);

    g_return_if_fail((window->priv->state & XED_WINDOW_STATE_SAVING_SESSION) == 0);

    ++window->priv->num_tabs;

    update_sensitivity_according_to_open_tabs (window);

    view = xed_tab_get_view (tab);
    doc = xed_tab_get_document (tab);

    /* IMPORTANT: remember to disconnect the signal in notebook_tab_removed
     * if a new signal is connected here */

    g_signal_connect(tab, "notify::name", G_CALLBACK (sync_name), window);
    g_signal_connect(tab, "notify::state", G_CALLBACK (sync_state), window);

    g_signal_connect(doc, "cursor-moved", G_CALLBACK (update_cursor_position_statusbar), window);
    g_signal_connect(doc, "notify::can-search-again", G_CALLBACK (can_search_again), window);
    g_signal_connect(doc, "notify::can-undo", G_CALLBACK (can_undo), window);
    g_signal_connect(doc, "notify::can-redo", G_CALLBACK (can_redo), window);
    g_signal_connect(doc, "notify::has-selection", G_CALLBACK (selection_changed), window);
    g_signal_connect(doc, "notify::language", G_CALLBACK (sync_languages_menu), window);
    g_signal_connect(doc, "notify::read-only", G_CALLBACK (readonly_changed), window);
    g_signal_connect(view, "toggle_overwrite", G_CALLBACK (update_overwrite_mode_statusbar), window);
    g_signal_connect(view, "notify::editable", G_CALLBACK (editable_changed), window);

    update_documents_list_menu (window);

    g_signal_connect(view, "drop_uris", G_CALLBACK (drop_uris_cb), NULL);

    update_window_state (window);

    g_signal_emit (G_OBJECT(window), signals[TAB_ADDED], 0, tab);
}

static void
notebook_tab_removed (XedNotebook *notebook,
                      XedTab *tab,
                      XedWindow *window)
{
    XedView *view;
    XedDocument *doc;

    xed_debug (DEBUG_WINDOW);

    g_return_if_fail((window->priv->state & XED_WINDOW_STATE_SAVING_SESSION) == 0);

    --window->priv->num_tabs;

    view = xed_tab_get_view (tab);
    doc = xed_tab_get_document (tab);

    g_signal_handlers_disconnect_by_func(tab, G_CALLBACK (sync_name), window);
    g_signal_handlers_disconnect_by_func(tab, G_CALLBACK (sync_state), window);
    g_signal_handlers_disconnect_by_func(doc, G_CALLBACK (update_cursor_position_statusbar), window);
    g_signal_handlers_disconnect_by_func(doc, G_CALLBACK (can_search_again), window);
    g_signal_handlers_disconnect_by_func(doc, G_CALLBACK (can_undo), window);
    g_signal_handlers_disconnect_by_func(doc, G_CALLBACK (can_redo), window);
    g_signal_handlers_disconnect_by_func(doc, G_CALLBACK (selection_changed), window);
    g_signal_handlers_disconnect_by_func(doc, G_CALLBACK (sync_languages_menu), window);
    g_signal_handlers_disconnect_by_func(doc, G_CALLBACK (readonly_changed), window);
    g_signal_handlers_disconnect_by_func(view, G_CALLBACK (update_overwrite_mode_statusbar), window);
    g_signal_handlers_disconnect_by_func(view, G_CALLBACK (editable_changed), window);
    g_signal_handlers_disconnect_by_func(view, G_CALLBACK (drop_uris_cb), NULL);

    if (window->priv->tab_width_id && tab == xed_window_get_active_tab (window))
    {
        g_signal_handler_disconnect (view, window->priv->tab_width_id);
        window->priv->tab_width_id = 0;
    }

    if (window->priv->spaces_instead_of_tabs_id && tab == xed_window_get_active_tab (window))
    {
        g_signal_handler_disconnect (view, window->priv->spaces_instead_of_tabs_id);
        window->priv->spaces_instead_of_tabs_id = 0;
    }

    if (window->priv->language_changed_id && tab == xed_window_get_active_tab (window))
    {
        g_signal_handler_disconnect (doc, window->priv->language_changed_id);
        window->priv->language_changed_id = 0;
    }

    if (window->priv->use_word_wrap_id && tab == xed_window_get_active_tab (window))
    {
        g_signal_handler_disconnect (view, window->priv->use_word_wrap_id);
        window->priv->use_word_wrap_id = 0;
    }

    g_return_if_fail(window->priv->num_tabs >= 0);
    if (window->priv->num_tabs == 0)
    {
        window->priv->active_tab = NULL;
        set_title (window);

        /* Remove line and col info */
        xed_statusbar_set_cursor_position (XED_STATUSBAR(window->priv->statusbar), -1, -1);

        xed_statusbar_clear_overwrite (XED_STATUSBAR(window->priv->statusbar));

        /* hide the combos */
        gtk_widget_hide (window->priv->tab_width_combo);
        gtk_widget_hide (window->priv->language_combo);
    }

    if (!window->priv->removing_tabs)
    {
        update_documents_list_menu (window);
        update_next_prev_doc_sensitivity_per_window (window);
    }
    else
    {
        if (window->priv->num_tabs == 0)
        {
            update_documents_list_menu (window);
            update_next_prev_doc_sensitivity_per_window (window);
        }
    }

    update_sensitivity_according_to_open_tabs (window);

    if (window->priv->num_tabs == 0)
    {
        peas_extension_set_call (window->priv->extensions, "update_state");
    }

    update_window_state (window);

    g_signal_emit (G_OBJECT(window), signals[TAB_REMOVED], 0, tab);
}

static void
notebook_tabs_reordered (XedNotebook *notebook,
                         XedWindow *window)
{
    update_documents_list_menu (window);
    update_next_prev_doc_sensitivity_per_window (window);
    g_signal_emit (G_OBJECT(window), signals[TABS_REORDERED], 0);
}

static void
notebook_tab_detached (XedNotebook *notebook,
                       XedTab *tab,
                       XedWindow *window)
{
    XedWindow *new_window;

    new_window = clone_window (window);

    xed_notebook_move_tab (notebook, XED_NOTEBOOK(_xed_window_get_notebook (new_window)), tab, 0);

    gtk_window_set_position (GTK_WINDOW(new_window), GTK_WIN_POS_MOUSE);

    gtk_widget_show (GTK_WIDGET(new_window));
}

static void
notebook_tab_close_request (XedNotebook *notebook,
                            XedTab *tab,
                            GtkWindow *window)
{
    /* Note: we are destroying the tab before the default handler
     * seems to be ok, but we need to keep an eye on this. */
    _xed_cmd_file_close_tab (tab, XED_WINDOW(window));
}

static gboolean
show_notebook_popup_menu (GtkNotebook *notebook,
                          XedWindow *window,
                          GdkEventButton *event)
{
    GtkWidget *menu;
//  GtkAction *action;

    menu = gtk_ui_manager_get_widget (window->priv->manager, "/NotebookPopup");
    g_return_val_if_fail(menu != NULL, FALSE);

// CHECK do we need this?
#if 0
    /* allow extensions to sync when showing the popup */
    action = gtk_action_group_get_action (window->priv->action_group,
                    "NotebookPopupAction");
    g_return_val_if_fail (action != NULL, FALSE);
    gtk_action_activate (action);
#endif
    if (event != NULL)
    {
        gtk_menu_popup (GTK_MENU(menu), NULL, NULL, NULL, NULL, event->button, event->time);
    }
    else
    {
        GtkWidget *tab;
        GtkWidget *tab_label;

        tab = GTK_WIDGET(xed_window_get_active_tab (window));
        g_return_val_if_fail(tab != NULL, FALSE);

        tab_label = gtk_notebook_get_tab_label (notebook, tab);

        gtk_menu_popup (GTK_MENU(menu), NULL, NULL, xed_utils_menu_position_under_widget, tab_label, 0,
                        gtk_get_current_event_time ());

        gtk_menu_shell_select_first (GTK_MENU_SHELL(menu), FALSE);
    }

    return TRUE;
}

static gboolean
notebook_button_press_event (GtkNotebook *notebook,
                             GdkEventButton *event,
                             XedWindow *window)
{
    if (GDK_BUTTON_PRESS == event->type && 3 == event->button)
    {
        return show_notebook_popup_menu (notebook, window, event);
    }
    else if (GDK_BUTTON_PRESS == event->type && 2 == event->button)
    {
        XedTab *tab;
        tab = xed_window_get_active_tab (window);
        notebook_tab_close_request (XED_NOTEBOOK(notebook), tab, GTK_WINDOW(window));
        return FALSE;
    }
    return FALSE;
}

static gboolean
notebook_popup_menu (GtkNotebook *notebook,
                     XedWindow *window)
{
    /* Only respond if the notebook is the actual focus */
    if (XED_IS_NOTEBOOK(gtk_window_get_focus (GTK_WINDOW (window))))
    {
        return show_notebook_popup_menu (notebook, window, NULL);
    }
    return FALSE;
}

static void
side_panel_size_allocate (GtkWidget *widget,
                          GtkAllocation *allocation,
                          XedWindow *window)
{
    window->priv->side_panel_size = allocation->width;
}

static void
bottom_panel_size_allocate (GtkWidget *widget,
                            GtkAllocation *allocation,
                            XedWindow *window)
{
    window->priv->bottom_panel_size = allocation->height;
}

static void
hpaned_restore_position (GtkWidget *widget,
                         XedWindow *window)
{
    gint pos;
    xed_debug_message (DEBUG_WINDOW, "Restoring hpaned position: side panel size %d", window->priv->side_panel_size);

    pos = MAX(100, window->priv->side_panel_size);
    gtk_paned_set_position (GTK_PANED(window->priv->hpaned), pos);

    /* start monitoring the size */
    g_signal_connect(window->priv->side_panel, "size-allocate", G_CALLBACK (side_panel_size_allocate), window);

    /* run this only once */
    g_signal_handlers_disconnect_by_func(widget, hpaned_restore_position, window);
}

static void
vpaned_restore_position (GtkWidget *widget,
                         XedWindow *window)
{
    GtkAllocation allocation;
    gint pos;

    gtk_widget_get_allocation (widget, &allocation);

    xed_debug_message (DEBUG_WINDOW, "Restoring vpaned position: bottom panel size %d",
                       window->priv->bottom_panel_size);

    pos = allocation.height - MAX(50, window->priv->bottom_panel_size);
    gtk_paned_set_position (GTK_PANED(window->priv->vpaned), pos);

    /* start monitoring the size */
    g_signal_connect(window->priv->bottom_panel, "size-allocate", G_CALLBACK (bottom_panel_size_allocate), window);

    /* run this only once */
    g_signal_handlers_disconnect_by_func(widget, vpaned_restore_position, window);
}

static void
side_panel_visibility_changed (GtkWidget *side_panel,
                               XedWindow *window)
{
    gboolean visible;
    GtkAction *action;

    visible = gtk_widget_get_visible (side_panel);

    g_settings_set_boolean (window->priv->ui_settings, XED_SETTINGS_SIDE_PANEL_VISIBLE, visible);

    action = gtk_action_group_get_action (window->priv->panes_action_group, "ViewSidePane");

    if (gtk_toggle_action_get_active (GTK_TOGGLE_ACTION(action)) != visible)
    {
        gtk_toggle_action_set_active (GTK_TOGGLE_ACTION(action), visible);
    }

    /* focus the document */
    if (!visible && window->priv->active_tab != NULL)
    {
        gtk_widget_grab_focus (GTK_WIDGET(xed_tab_get_view (XED_TAB (window->priv->active_tab))));
    }
}

static void
create_side_panel (XedWindow *window)
{
    GtkWidget *documents_panel;
    xed_debug (DEBUG_WINDOW);

    window->priv->side_panel = xed_panel_new (GTK_ORIENTATION_VERTICAL);

    gtk_paned_pack1 (GTK_PANED (window->priv->hpaned), window->priv->side_panel, FALSE, FALSE);

    g_signal_connect_after (window->priv->side_panel, "show", G_CALLBACK (side_panel_visibility_changed), window);
    g_signal_connect_after (window->priv->side_panel, "hide", G_CALLBACK (side_panel_visibility_changed), window);

    documents_panel = xed_documents_panel_new (window);
    xed_panel_add_item (XED_PANEL (window->priv->side_panel), documents_panel, _("Documents"), "text-x-generic");
}

static void
bottom_panel_visibility_changed (XedPanel *bottom_panel,
                                 XedWindow *window)
{
    gboolean visible;
    GtkAction *action;

    visible = gtk_widget_get_visible (GTK_WIDGET (bottom_panel));

    g_settings_set_boolean (window->priv->ui_settings, XED_SETTINGS_BOTTOM_PANEL_VISIBLE, visible);

    action = gtk_action_group_get_action (window->priv->panes_action_group, "ViewBottomPane");

    if (gtk_toggle_action_get_active (GTK_TOGGLE_ACTION(action)) != visible)
    {
        gtk_toggle_action_set_active (GTK_TOGGLE_ACTION(action), visible);
    }

    /* focus the document */
    if (!visible && window->priv->active_tab != NULL)
    {
        gtk_widget_grab_focus (GTK_WIDGET(xed_tab_get_view (XED_TAB (window->priv->active_tab))));
    }
}

static void
bottom_panel_item_removed (XedPanel  *panel,
                           GtkWidget *item,
                           XedWindow *window)
{
    if (xed_panel_get_n_items (panel) == 0)
    {
        GtkAction *action;

        gtk_widget_hide (GTK_WIDGET (panel));
        gtk_revealer_set_reveal_child (GTK_REVEALER (window->priv->bottom_pane_button_revealer), FALSE);
        action = gtk_action_group_get_action (window->priv->panes_action_group, "ViewBottomPane");
        gtk_action_set_sensitive (action, FALSE);
    }
}

static void
bottom_panel_item_added (XedPanel  *panel,
                         GtkWidget *item,
                         XedWindow *window)
{
    /* if it's the first item added, set the menu item
     * sensitive and if needed show the panel */
    if (xed_panel_get_n_items (panel) == 1)
    {
        GtkAction *action;
        gboolean show;

        gtk_revealer_set_reveal_child (GTK_REVEALER (window->priv->bottom_pane_button_revealer), TRUE);

        action = gtk_action_group_get_action (window->priv->panes_action_group, "ViewBottomPane");
        gtk_action_set_sensitive (action, TRUE);
        show = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
        if (show)
        {
            gtk_widget_show (GTK_WIDGET(panel));
        }
    }
}

static void
create_bottom_panel (XedWindow *window)
{
    xed_debug (DEBUG_WINDOW);
    window->priv->bottom_panel = xed_panel_new (GTK_ORIENTATION_HORIZONTAL);
    gtk_paned_pack2 (GTK_PANED (window->priv->vpaned), window->priv->bottom_panel, FALSE, FALSE);
    g_signal_connect_after(window->priv->bottom_panel, "show", G_CALLBACK (bottom_panel_visibility_changed), window);
    g_signal_connect_after(window->priv->bottom_panel, "hide", G_CALLBACK (bottom_panel_visibility_changed), window);
}

static void
init_panels_visibility (XedWindow *window)
{
    gint active_page;
    gboolean side_panel_visible;
    gboolean bottom_panel_visible;

    xed_debug (DEBUG_WINDOW);

    /* side pane */
    active_page = g_settings_get_int (window->priv->window_settings, XED_SETTINGS_SIDE_PANEL_ACTIVE_PAGE);
    _xed_panel_set_active_item_by_id (XED_PANEL (window->priv->side_panel), active_page);

    side_panel_visible = g_settings_get_boolean (window->priv->ui_settings, XED_SETTINGS_SIDE_PANEL_VISIBLE);
    bottom_panel_visible = g_settings_get_boolean (window->priv->ui_settings, XED_SETTINGS_BOTTOM_PANEL_VISIBLE);

    if (side_panel_visible)
    {
        gtk_widget_show (window->priv->side_panel);
    }

    /* bottom pane, it can be empty */
    if (xed_panel_get_n_items (XED_PANEL (window->priv->bottom_panel)) > 0)
    {
        active_page = g_settings_get_int (window->priv->window_settings, XED_SETTINGS_BOTTOM_PANEL_ACTIVE_PAGE);
        _xed_panel_set_active_item_by_id (XED_PANEL(window->priv->bottom_panel), active_page);

        if (bottom_panel_visible)
        {
            gtk_widget_show (window->priv->bottom_panel);
        }

        gtk_revealer_set_reveal_child (GTK_REVEALER (window->priv->bottom_pane_button_revealer), TRUE);
    }
    else
    {
        GtkAction *action;

        action = gtk_action_group_get_action (window->priv->panes_action_group, "ViewBottomPane");
        gtk_action_set_sensitive (action, FALSE);
        gtk_revealer_set_reveal_child (GTK_REVEALER (window->priv->bottom_pane_button_revealer), FALSE);
    }

    /* start track sensitivity after the initial state is set */
    window->priv->bottom_panel_item_removed_handler_id =
        g_signal_connect (window->priv->bottom_panel, "item_removed",
        G_CALLBACK (bottom_panel_item_removed), window);

    g_signal_connect(window->priv->bottom_panel, "item_added", G_CALLBACK (bottom_panel_item_added), window);
}

static void
clipboard_owner_change (GtkClipboard *clipboard,
                        GdkEventOwnerChange *event,
                        XedWindow *window)
{
    set_paste_sensitivity_according_to_clipboard (window, clipboard);
}

static void
window_realized (GtkWidget *window,
                 gpointer *data)
{
    GtkClipboard *clipboard;
    clipboard = gtk_widget_get_clipboard (window, GDK_SELECTION_CLIPBOARD);
    g_signal_connect(clipboard, "owner_change", G_CALLBACK (clipboard_owner_change), window);
}

static void
window_unrealized (GtkWidget *window,
                   gpointer *data)
{
    GtkClipboard *clipboard;
    clipboard = gtk_widget_get_clipboard (window, GDK_SELECTION_CLIPBOARD);
    g_signal_handlers_disconnect_by_func(clipboard, G_CALLBACK (clipboard_owner_change), window);
}

static void
check_window_is_active (XedWindow *window,
                        GParamSpec *property,
                        gpointer useless)
{
    if (window->priv->window_state & GDK_WINDOW_STATE_FULLSCREEN)
    {
        if (gtk_window_is_active (GTK_WINDOW(window)))
        {
            gtk_widget_show (window->priv->fullscreen_controls);
        }
        else
        {
            gtk_widget_hide (window->priv->fullscreen_controls);
        }
    }
}

static void
connect_notebook_signals (XedWindow *window,
                          GtkWidget *notebook)
{
    g_signal_connect(notebook, "switch-page", G_CALLBACK (notebook_switch_page), window);
    g_signal_connect(notebook, "tab-added", G_CALLBACK (notebook_tab_added), window);
    g_signal_connect(notebook, "tab-removed", G_CALLBACK (notebook_tab_removed), window);
    g_signal_connect(notebook, "tabs-reordered", G_CALLBACK (notebook_tabs_reordered), window);
    g_signal_connect(notebook, "tab-detached", G_CALLBACK (notebook_tab_detached), window);
    g_signal_connect(notebook, "tab-close-request", G_CALLBACK (notebook_tab_close_request), window);
    g_signal_connect(notebook, "button-press-event", G_CALLBACK (notebook_button_press_event), window);
    g_signal_connect(notebook, "popup-menu", G_CALLBACK (notebook_popup_menu), window);
}

static void
add_notebook (XedWindow *window,
              GtkWidget *notebook)
{
    gtk_paned_pack1 (GTK_PANED(window->priv->vpaned), notebook, TRUE, TRUE);
    gtk_widget_show (notebook);

    // xed_notebook_set_tab_scrolling_enabled (XED_NOTEBOOK (notebook), xed_prefs_manager_get_enable_tab_scrolling ());

    connect_notebook_signals (window, notebook);
}

 static void
extension_added (PeasExtensionSet *extensions,
                 PeasPluginInfo   *info,
                 PeasExtension    *exten,
                 XedWindow        *window)
{
    peas_extension_call (exten, "activate");
}

static void
extension_removed (PeasExtensionSet *extensions,
                   PeasPluginInfo   *info,
                   PeasExtension    *exten,
                   XedWindow        *window)
{
    peas_extension_call (exten, "deactivate");

    /* Ensure update of the ui manager, because we suspect it does something with expected static strings in the
     * type module (when unloaded the strings don't exist anymore, and the ui manager update in a idle func) */
    gtk_ui_manager_ensure_update (window->priv->manager);
}

static void
xed_window_init (XedWindow *window)
{
    GtkWidget *main_box;
    GtkTargetList *tl;

    xed_debug (DEBUG_WINDOW);

    window->priv = XED_WINDOW_GET_PRIVATE (window);
    window->priv->active_tab = NULL;
    window->priv->num_tabs = 0;
    window->priv->removing_tabs = FALSE;
    window->priv->state = XED_WINDOW_STATE_NORMAL;
    window->priv->dispose_has_run = FALSE;
    window->priv->fullscreen_controls = NULL;
    window->priv->fullscreen_animation_timeout_id = 0;
    window->priv->editor_settings = g_settings_new ("org.x.editor.preferences.editor");
    window->priv->ui_settings = g_settings_new ("org.x.editor.preferences.ui");

    /* Window settings are applied only once the window is closed. We do not want
       to keep writing to disk when the window is dragged around */
    window->priv->window_settings = g_settings_new ("org.x.editor.state.window");
    g_settings_delay (window->priv->window_settings);

    window->priv->message_bus = xed_message_bus_new ();

    window->priv->window_group = gtk_window_group_new ();
    gtk_window_group_add_window (window->priv->window_group, GTK_WINDOW (window));

    gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (window)), "xed-window");

    main_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
    gtk_container_add (GTK_CONTAINER (window), main_box);
    gtk_widget_show (main_box);

    /* Add menu bar and toolbar bar */
    create_menu_bar_and_toolbar (window, main_box);

    /* If we're running as root, add and infobar to warn about elevated privileges */
    if (geteuid () == 0)
    {
        GtkWidget *root_bar = gtk_info_bar_new ();
        gtk_info_bar_set_message_type (GTK_INFO_BAR (root_bar), GTK_MESSAGE_ERROR);
        GtkWidget *content_area = gtk_info_bar_get_content_area (GTK_INFO_BAR (root_bar));
        GtkWidget *label = gtk_label_new (_("Elevated Privileges"));
        gtk_widget_show (label);
        gtk_container_add (GTK_CONTAINER (content_area), label);
        gtk_box_pack_start (GTK_BOX (main_box), root_bar, FALSE, FALSE, 0);
        gtk_widget_set_visible (root_bar, TRUE);
    }

    /* Add status bar */
    create_statusbar (window, main_box);

    /* Add the main area */
    xed_debug_message (DEBUG_WINDOW, "Add main area");
    window->priv->hpaned = gtk_paned_new (GTK_ORIENTATION_HORIZONTAL);
    gtk_box_pack_start (GTK_BOX (main_box), window->priv->hpaned, TRUE, TRUE, 0);

    window->priv->vpaned = gtk_paned_new (GTK_ORIENTATION_VERTICAL);
    gtk_paned_pack2 (GTK_PANED (window->priv->hpaned), window->priv->vpaned, TRUE, FALSE);

    xed_debug_message (DEBUG_WINDOW, "Create xed notebook");
    window->priv->notebook = xed_notebook_new ();
    add_notebook (window, window->priv->notebook);

    /* side and bottom panels */
    create_side_panel (window);
    create_bottom_panel (window);

    /* panes' state must be restored after panels have been mapped,
     * since the bottom pane position depends on the size of the vpaned. */
    window->priv->side_panel_size = g_settings_get_int (window->priv->window_settings, XED_SETTINGS_SIDE_PANEL_SIZE);
    window->priv->bottom_panel_size = g_settings_get_int (window->priv->window_settings, XED_SETTINGS_BOTTOM_PANEL_SIZE);

    g_signal_connect_after(window->priv->hpaned, "map", G_CALLBACK (hpaned_restore_position), window);
    g_signal_connect_after(window->priv->vpaned, "map", G_CALLBACK (vpaned_restore_position), window);

    gtk_widget_show (window->priv->hpaned);
    gtk_widget_show (window->priv->vpaned);

    /* Drag and drop support, set targets to NULL because we add the
     default uri_targets below */
    gtk_drag_dest_set (GTK_WIDGET(window), GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_HIGHLIGHT | GTK_DEST_DEFAULT_DROP,
                       NULL, 0, GDK_ACTION_COPY);

    /* Add uri targets */
    tl = gtk_drag_dest_get_target_list (GTK_WIDGET (window));

    if (tl == NULL)
    {
        tl = gtk_target_list_new (NULL, 0);
        gtk_drag_dest_set_target_list (GTK_WIDGET (window), tl);
        gtk_target_list_unref (tl);
    }

    gtk_target_list_add_uri_targets (tl, TARGET_URI_LIST);

    /* connect instead of override, so that we can share the cb code with the view */
    g_signal_connect (window, "drag_data_received", G_CALLBACK (drag_data_received_cb), NULL);

    /* we can get the clipboard only after the widget is realized */
    g_signal_connect (window, "realize", G_CALLBACK (window_realized), NULL);
    g_signal_connect (window, "unrealize", G_CALLBACK (window_unrealized), NULL);

    /* Check if the window is active for fullscreen */
    g_signal_connect (window, "notify::is-active", G_CALLBACK (check_window_is_active), NULL);

    g_signal_connect (GTK_WIDGET (window), "key-press-event", G_CALLBACK (on_key_pressed), window);

    xed_debug_message (DEBUG_WINDOW, "Update plugins ui");

    window->priv->extensions = peas_extension_set_new (PEAS_ENGINE (xed_plugins_engine_get_default ()),
                                                       XED_TYPE_WINDOW_ACTIVATABLE, "window", window, NULL);

    g_signal_connect (window->priv->extensions, "extension-added", G_CALLBACK (extension_added), window);
    g_signal_connect (window->priv->extensions, "extension-removed", G_CALLBACK (extension_removed), window);

    peas_extension_set_call (window->priv->extensions, "activate");

    /* set visibility of panes.
     * This needs to be done after plugins activatation */
    init_panels_visibility (window);

    update_sensitivity_according_to_open_tabs (window);

    xed_debug_message (DEBUG_WINDOW, "END");
}

/**
 * xed_window_get_active_view:
 * @window: a #XedWindow
 *
 * Gets the active #XedView.
 *
 * Returns: (transfer none): the active #XedView
 */
XedView *
xed_window_get_active_view (XedWindow *window)
{
    XedView *view;

    if (window == NULL)
    {
        return NULL;
    }

    if (window->priv->active_tab == NULL)
    {
        return NULL;
    }

    view = xed_tab_get_view (XED_TAB(window->priv->active_tab));

    return view;
}

/**
 * xed_window_get_active_document:
 * @window: a #XedWindow
 *
 * Gets the active #XedDocument.
 *
 * Returns: (transfer none): the active #XedDocument
 */
XedDocument *
xed_window_get_active_document (XedWindow *window)
{
    XedView *view;

    if (window == NULL)
    {
        return NULL;
    }

    view = xed_window_get_active_view (window);
    if (view == NULL)
    {
        return NULL;
    }

    return XED_DOCUMENT(gtk_text_view_get_buffer (GTK_TEXT_VIEW (view)));
}

GtkWidget *
_xed_window_get_notebook (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);

    return window->priv->notebook;
}

/**
 * xed_window_create_tab:
 * @window: a #XedWindow
 * @jump_to: %TRUE to set the new #XedTab as active
 *
 * Creates a new #XedTab and adds the new tab to the #XedNotebook.
 * In case @jump_to is %TRUE the #XedNotebook switches to that new #XedTab.
 *
 * Returns: (transfer none): a new #XedTab
 */
XedTab *
xed_window_create_tab (XedWindow *window,
                       gboolean jump_to)
{
    XedTab *tab;

    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);

    tab = XED_TAB(_xed_tab_new ());
    gtk_widget_show (GTK_WIDGET(tab));

    xed_notebook_add_tab (XED_NOTEBOOK(window->priv->notebook), tab, -1, jump_to);

    if (!gtk_widget_get_visible (GTK_WIDGET(window)))
    {
        gtk_window_present (GTK_WINDOW(window));
    }

    return tab;
}

/**
 * xed_window_create_tab_from_location:
 * @window: a #XedWindow
 * @location: the location of the document
 * @encoding: a #XedEncoding
 * @line_pos: the line position to visualize
 * @create: %TRUE to create a new document in case @uri does exist
 * @jump_to: %TRUE to set the new #XedTab as active
 *
 * Creates a new #XedTab loading the document specified by @uri.
 * In case @jump_to is %TRUE the #XedNotebook swithes to that new #XedTab.
 * Whether @create is %TRUE, creates a new empty document if location does
 * not refer to an existing file
 *
 * Returns: (transfer none): a new #XedTab
 */
XedTab *
xed_window_create_tab_from_location (XedWindow         *window,
                                     GFile             *location,
                                     const XedEncoding *encoding,
                                     gint               line_pos,
                                     gboolean           create,
                                     gboolean           jump_to)
{
    GtkWidget *tab;

    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    g_return_val_if_fail(G_IS_FILE (location), NULL);

    tab = _xed_tab_new_from_location (location, encoding, line_pos, create);
    if (tab == NULL)
    {
        return NULL;
    }

    gtk_widget_show (tab);

    xed_notebook_add_tab (XED_NOTEBOOK(window->priv->notebook), XED_TAB(tab), -1, jump_to);

    if (!gtk_widget_get_visible (GTK_WIDGET(window)))
    {
        gtk_window_present (GTK_WINDOW(window));
    }

    return XED_TAB(tab);
}

/**
 * xed_window_get_active_tab:
 * @window: a XedWindow
 *
 * Gets the active #XedTab in the @window.
 *
 * Returns: (transfer none): the active #XedTab in the @window.
 */
XedTab *
xed_window_get_active_tab (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);

    if (window->priv->active_tab == NULL)
    {
        return NULL;
    }
    else
    {
        return XED_TAB(window->priv->active_tab);
    }
}

static void
add_document (XedTab *tab,
              GList **res)
{
    XedDocument *doc;

    doc = xed_tab_get_document (tab);

    *res = g_list_prepend (*res, doc);
}

/**
 * xed_window_get_documents:
 * @window: a #XedWindow
 *
 * Gets a newly allocated list with all the documents in the window.
 * This list must be freed.
 *
 * Returns: (element-type Xed.Document) (transfer container): a newly
 * allocated list with all the documents in the window
 */
GList *
xed_window_get_documents (XedWindow *window)
{
    GList *res = NULL;
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    gtk_container_foreach (GTK_CONTAINER(window->priv->notebook), (GtkCallback) add_document, &res);
    res = g_list_reverse (res);
    return res;
}

static void
add_view (XedTab *tab,
          GList **res)
{
    XedView *view;
    view = xed_tab_get_view (tab);
    *res = g_list_prepend (*res, view);
}

/**
 * xed_window_get_views:
 * @window: a #XedWindow
 *
 * Gets a list with all the views in the window. This list must be freed.
 *
 * Returns: (element-type Xed.View) (transfer container): a newly allocated
 * list with all the views in the window
 */
GList *
xed_window_get_views (XedWindow *window)
{
    GList *res = NULL;
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    gtk_container_foreach (GTK_CONTAINER(window->priv->notebook), (GtkCallback) add_view, &res);
    res = g_list_reverse (res);
    return res;
}

/**
 * xed_window_close_tab:
 * @window: a #XedWindow
 * @tab: the #XedTab to close
 *
 * Closes the @tab.
 */
void
xed_window_close_tab (XedWindow *window,
                      XedTab *tab)
{
    g_return_if_fail(XED_IS_WINDOW (window));
    g_return_if_fail(XED_IS_TAB (tab));
    g_return_if_fail((xed_tab_get_state (tab) != XED_TAB_STATE_SAVING)
                        && (xed_tab_get_state (tab) != XED_TAB_STATE_SHOWING_PRINT_PREVIEW));

    xed_notebook_remove_tab (XED_NOTEBOOK(window->priv->notebook), tab);
}

/**
 * xed_window_close_all_tabs:
 * @window: a #XedWindow
 *
 * Closes all opened tabs.
 */
void
xed_window_close_all_tabs (XedWindow *window)
{
    g_return_if_fail(XED_IS_WINDOW (window));
    g_return_if_fail(!(window->priv->state & XED_WINDOW_STATE_SAVING)
                        && !(window->priv->state & XED_WINDOW_STATE_SAVING_SESSION));

    window->priv->removing_tabs = TRUE;
    xed_notebook_remove_all_tabs (XED_NOTEBOOK(window->priv->notebook));
    window->priv->removing_tabs = FALSE;
}

/**
 * xed_window_close_tabs:
 * @window: a #XedWindow
 * @tabs: (element-type Xed.Tab): a list of #XedTab
 *
 * Closes all tabs specified by @tabs.
 */
void
xed_window_close_tabs (XedWindow *window,
                       const GList *tabs)
{
    g_return_if_fail(XED_IS_WINDOW (window));
    g_return_if_fail(!(window->priv->state & XED_WINDOW_STATE_SAVING)
                        && !(window->priv->state & XED_WINDOW_STATE_SAVING_SESSION));

    if (tabs == NULL)
    {
        return;
    }

    window->priv->removing_tabs = TRUE;

    while (tabs != NULL)
    {
        if (tabs->next == NULL)
        {
            window->priv->removing_tabs = FALSE;
        }

        xed_notebook_remove_tab (XED_NOTEBOOK(window->priv->notebook), XED_TAB(tabs->data));
        tabs = g_list_next(tabs);
    }

    g_return_if_fail(window->priv->removing_tabs == FALSE);
}

XedWindow *
_xed_window_move_tab_to_new_window (XedWindow *window,
                                    XedTab *tab)
{
    XedWindow *new_window;

    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    g_return_val_if_fail(XED_IS_TAB (tab), NULL);
    g_return_val_if_fail(gtk_notebook_get_n_pages (GTK_NOTEBOOK (window->priv->notebook)) > 1, NULL);

    new_window = clone_window (window);
    xed_notebook_move_tab (XED_NOTEBOOK(window->priv->notebook), XED_NOTEBOOK(new_window->priv->notebook), tab, -1);
    gtk_widget_show (GTK_WIDGET(new_window));

    return new_window;
}

/**
 * xed_window_set_active_tab:
 * @window: a #XedWindow
 * @tab: a #XedTab
 *
 * Switches to the tab that matches with @tab.
 */
void
xed_window_set_active_tab (XedWindow *window,
                           XedTab *tab)
{
    gint page_num;

    g_return_if_fail(XED_IS_WINDOW (window));
    g_return_if_fail(XED_IS_TAB (tab));

    page_num = gtk_notebook_page_num (GTK_NOTEBOOK(window->priv->notebook), GTK_WIDGET(tab));
    g_return_if_fail(page_num != -1);
    gtk_notebook_set_current_page (GTK_NOTEBOOK(window->priv->notebook), page_num);
}

/**
 * xed_window_get_group:
 * @window: a #XedWindow
 *
 * Gets the #GtkWindowGroup in which @window resides.
 *
 * Returns: (transfer none): the #GtkWindowGroup
 */
GtkWindowGroup *
xed_window_get_group (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    return window->priv->window_group;
}

gboolean
_xed_window_is_removing_tabs (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), FALSE);
    return window->priv->removing_tabs;
}

/**
 * xed_window_get_ui_manager:
 * @window: a #XedWindow
 *
 * Gets the #GtkUIManager associated with the @window.
 *
 * Returns: (transfer none): the #GtkUIManager of the @window.
 */
GtkUIManager *
xed_window_get_ui_manager (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    return window->priv->manager;
}

/**
 * xed_window_get_side_panel:
 * @window: a #XedWindow
 *
 * Gets the side #XedPanel of the @window.
 *
 * Returns: (transfer none): the side #XedPanel.
 */
XedPanel *
xed_window_get_side_panel (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    return XED_PANEL(window->priv->side_panel);
}

/**
 * xed_window_get_bottom_panel:
 * @window: a #XedWindow
 *
 * Gets the bottom #XedPanel of the @window.
 *
 * Returns: (transfer none): the bottom #XedPanel.
 */
XedPanel *
xed_window_get_bottom_panel (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    return XED_PANEL(window->priv->bottom_panel);
}

/**
 * xed_window_get_statusbar:
 * @window: a #XedWindow
 *
 * Gets the #XedStatusbar of the @window.
 *
 * Returns: (transfer none): the #XedStatusbar of the @window.
 */
GtkWidget *
xed_window_get_statusbar (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), 0);
    return window->priv->statusbar;
}

/**
 * xed_window_get_searchbar:
 * @window: a #XedWindow
 *
 * Gets the #XedSearchbar of the @window.
 *
 * Returns: (transfer none): the #XedSearchbar of the @window.
 */
GtkWidget *
xed_window_get_searchbar (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), 0);
    return window->priv->searchbar;
}

/**
 * xed_window_get_state:
 * @window: a #XedWindow
 *
 * Retrieves the state of the @window.
 *
 * Returns: the current #XedWindowState of the @window.
 */
XedWindowState
xed_window_get_state (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), XED_WINDOW_STATE_NORMAL);
    return window->priv->state;
}

GFile *
_xed_window_get_default_location (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    if (window->priv->default_location != NULL)
    {
        return g_object_ref (window->priv->default_location);
    }
    else
    {
        return NULL;
    }
}

void
_xed_window_set_default_location (XedWindow *window,
                                  GFile *location)
{
    GFile *dir;

    g_return_if_fail(XED_IS_WINDOW (window));
    g_return_if_fail(G_IS_FILE (location));

    dir = g_file_get_parent (location);
    g_return_if_fail(dir != NULL);

    if (window->priv->default_location != NULL)
    {
        g_object_unref (window->priv->default_location);
    }

    window->priv->default_location = dir;
}

/**
 * xed_window_get_unsaved_documents:
 * @window: a #XedWindow
 *
 * Gets the list of documents that need to be saved before closing the window.
 *
 * Returns: (element-type Xed.Document) (transfer container): a list of
 * #XedDocument that need to be saved before closing the window
 */
GList *
xed_window_get_unsaved_documents (XedWindow *window)
{
    GList *unsaved_docs = NULL;
    GList *tabs;
    GList *l;

    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);

    tabs = gtk_container_get_children (GTK_CONTAINER(window->priv->notebook));

    l = tabs;
    while (l != NULL)
    {
        XedTab *tab;
        tab = XED_TAB(l->data);
        if (!_xed_tab_can_close (tab))
        {
            XedDocument *doc;
            doc = xed_tab_get_document (tab);
            unsaved_docs = g_list_prepend (unsaved_docs, doc);
        }
        l = g_list_next(l);
    }

    g_list_free (tabs);

    return g_list_reverse (unsaved_docs);
}

void
_xed_window_set_saving_session_state (XedWindow *window,
                                      gboolean saving_session)
{
    XedWindowState old_state;

    g_return_if_fail(XED_IS_WINDOW (window));

    old_state = window->priv->state;

    if (saving_session)
    {
        window->priv->state |= XED_WINDOW_STATE_SAVING_SESSION;
    }
    else
    {
        window->priv->state &= ~XED_WINDOW_STATE_SAVING_SESSION;
    }

    if (old_state != window->priv->state)
    {
        set_sensitivity_according_to_window_state (window);
        g_object_notify (G_OBJECT(window), "state");
    }
}

static void
hide_notebook_tabs_on_fullscreen (GtkNotebook *notebook,
                                  GParamSpec *pspec,
                                  XedWindow *window)
{
    gtk_notebook_set_show_tabs (notebook, FALSE);
}

void
_xed_window_fullscreen (XedWindow *window)
{
    g_return_if_fail (XED_IS_WINDOW (window));

    if (_xed_window_is_fullscreen (window))
    {
        return;
    }

    /* Go to fullscreen mode and hide bars */
    gtk_window_fullscreen (&window->window);

    gtk_widget_hide (window->priv->menubar);

    g_signal_handlers_block_by_func (window->priv->toolbar, toolbar_visibility_changed, window);
    gtk_widget_hide (window->priv->toolbar);

    g_signal_handlers_block_by_func (window->priv->statusbar, statusbar_visibility_changed, window);
    gtk_widget_hide (window->priv->statusbar);

    fullscreen_controls_build (window);
    fullscreen_controls_show (window);
}

void
_xed_window_unfullscreen (XedWindow *window)
{
    gboolean visible;
    GtkAction *action;

    g_return_if_fail (XED_IS_WINDOW (window));

    if (!_xed_window_is_fullscreen (window))
    {
        return;
    }

    /* Unfullscreen and show bars */
    gtk_window_unfullscreen (&window->window);
    g_signal_handlers_disconnect_by_func (window->priv->notebook, hide_notebook_tabs_on_fullscreen, window);
    gtk_widget_show (window->priv->menubar);

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "ViewToolbar");
    visible = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
    if (visible)
    {
        gtk_widget_show (window->priv->toolbar);
    }
    g_signal_handlers_unblock_by_func (window->priv->toolbar, toolbar_visibility_changed, window);

    action = gtk_action_group_get_action (window->priv->always_sensitive_action_group, "ViewStatusbar");
    visible = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
    if (visible)
    {
        gtk_widget_show (window->priv->statusbar);
    }
    g_signal_handlers_unblock_by_func (window->priv->statusbar, statusbar_visibility_changed, window);

    gtk_widget_hide (window->priv->fullscreen_controls);
}

gboolean
_xed_window_is_fullscreen (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), FALSE);
    return window->priv->window_state & GDK_WINDOW_STATE_FULLSCREEN;
}

/**
 * xed_window_get_tab_from_location:
 * @window: a #XedWindow
 * @location: a #GFile
 *
 * Gets the #XedTab that matches with the given @location.
 *
 * Returns: the #XedTab that matches with the given @location.
 */
XedTab *
xed_window_get_tab_from_location (XedWindow *window,
                                  GFile *location)
{
    GList *tabs;
    GList *l;
    XedTab *ret = NULL;

    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    g_return_val_if_fail(G_IS_FILE (location), NULL);

    tabs = gtk_container_get_children (GTK_CONTAINER(window->priv->notebook));

    for (l = tabs; l != NULL; l = g_list_next(l))
    {
        XedDocument *d;
        XedTab *t;
        GFile *f;

        t = XED_TAB(l->data);
        d = xed_tab_get_document (t);

        f = xed_document_get_location (d);

        if ((f != NULL))
        {
            gboolean found = g_file_equal (location, f);
            g_object_unref (f);
            if (found)
            {
                ret = t;
                break;
            }
        }
    }

    g_list_free (tabs);

    return ret;
}

/**
 * xed_window_get_message_bus:
 * @window: a #XedWindow
 *
 * Gets the #XedMessageBus associated with @window. The returned reference
 * is owned by the window and should not be unreffed.
 *
 * Return value: (transfer none): the #XedMessageBus associated with @window
 */
XedMessageBus *
xed_window_get_message_bus (XedWindow *window)
{
    g_return_val_if_fail(XED_IS_WINDOW (window), NULL);
    return window->priv->message_bus;
}

void
_xed_window_get_default_size (gint *width,
                              gint *height)
{
    g_return_if_fail (width != NULL && height != NULL);

    *width = XED_WINDOW_DEFAULT_WIDTH;
    *height = XED_WINDOW_DEFAULT_HEIGHT;
}