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nautilus-navigation-window.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 *  Nautilus
 *
 *  Copyright (C) 1999, 2000 Red Hat, Inc.
 *  Copyright (C) 1999, 2000, 2001 Eazel, Inc.
 *  Copyright (C) 2003 Ximian, Inc.
 *
 *  Nautilus is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  Nautilus is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public
 *  License along with this program; if not, write to the Free
 *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  Authors: Elliot Lee <sopwith@redhat.com>
 *         John Sullivan <sullivan@eazel.com>
 *
 */

/* nautilus-window.c: Implementation of the main window object */

#include <config.h>
#include "nautilus-window-private.h"

#include "nautilus-actions.h"
#include "nautilus-application.h"
#include "nautilus-bookmarks-window.h"
#include "nautilus-main.h"
#include "nautilus-location-bar.h"
#include "nautilus-pathbar.h"
#include "nautilus-query-editor.h"
#include "nautilus-search-bar.h"
#include "nautilus-navigation-window-slot.h"
#include "nautilus-notebook.h"
#include "nautilus-window-manage-views.h"
#include "nautilus-zoom-control.h"
#include <eel/eel-gtk-extensions.h>
#include <eel/eel-gtk-macros.h>
#include <eel/eel-string.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <glib/gi18n.h>
#ifdef HAVE_X11_XF86KEYSYM_H
#include <X11/XF86keysym.h>
#endif
#include <libgnomeui/gnome-uidefs.h>
#include <libnautilus-private/nautilus-file-utilities.h>
#include <libnautilus-private/nautilus-file-attributes.h>
#include <libnautilus-private/nautilus-global-preferences.h>
#include <libnautilus-private/nautilus-horizontal-splitter.h>
#include <libnautilus-private/nautilus-icon-info.h>
#include <libnautilus-private/nautilus-metadata.h>
#include <libnautilus-private/nautilus-mime-actions.h>
#include <libnautilus-private/nautilus-program-choosing.h>
#include <libnautilus-private/nautilus-sidebar.h>
#include <libnautilus-private/nautilus-view-factory.h>
#include <libnautilus-private/nautilus-clipboard.h>
#include <libnautilus-private/nautilus-undo.h>
#include <libnautilus-private/nautilus-module.h>
#include <libnautilus-private/nautilus-sidebar-provider.h>
#include <libnautilus-private/nautilus-search-directory.h>
#include <libnautilus-private/nautilus-signaller.h>
#include <math.h>
#include <sys/time.h>


/* FIXME bugzilla.gnome.org 41243: 
 * We should use inheritance instead of these special cases
 * for the desktop window.
 */
#include "nautilus-desktop-window.h"

#define MAX_TITLE_LENGTH 180

#define MENU_PATH_BOOKMARKS_PLACEHOLDER               "/MenuBar/Other Menus/Bookmarks/Bookmarks Placeholder"

enum {
      ARG_0,
      ARG_APP_ID,
      ARG_APP
};

static int side_pane_width_auto_value = 0;

static void add_sidebar_panels                       (NautilusNavigationWindow *window);
static void load_view_as_menu                        (NautilusWindow           *window);
static void side_panel_image_changed_callback        (NautilusSidebar          *side_panel,
                                          gpointer                  callback_data);
static void navigation_bar_location_changed_callback (GtkWidget                *widget,
                                          const char               *uri,
                                          NautilusNavigationWindow *window);
static void navigation_bar_cancel_callback           (GtkWidget                *widget,
                                          NautilusNavigationWindow *window);
static void path_bar_location_changed_callback       (GtkWidget                *widget,
                                          GFile                    *path,
                                          NautilusNavigationWindow *window);
static void path_bar_path_set_callback               (GtkWidget                *widget,
                                          GFile                    *location,
                                          NautilusNavigationWindow *window);
static void always_use_location_entry_changed        (gpointer                  callback_data);
static void always_use_browser_changed               (gpointer                  callback_data);
static void enable_tabs_changed                      (gpointer                  callback_data);

static void nautilus_navigation_window_set_bar_mode  (NautilusNavigationWindow *window, 
                                          NautilusBarMode           mode);
static void search_bar_activate_callback             (NautilusSearchBar        *bar,
                                          NautilusWindow           *window);
static void search_bar_cancel_callback               (GtkWidget                *widget,
                                          NautilusNavigationWindow *window);

static void nautilus_navigation_window_show_location_bar_temporarily (NautilusNavigationWindow *window);

static void view_as_menu_switch_views_callback       (GtkComboBox              *combo_box,
                                          NautilusWindow           *window);

G_DEFINE_TYPE (NautilusNavigationWindow, nautilus_navigation_window, NAUTILUS_TYPE_WINDOW)
#define parent_class nautilus_navigation_window_parent_class

static const struct {
      unsigned int keyval;
      const char *action;
} extra_navigation_window_keybindings [] = {
#ifdef HAVE_X11_XF86KEYSYM_H
      { XF86XK_Back,          NAUTILUS_ACTION_BACK },
      { XF86XK_Forward, NAUTILUS_ACTION_FORWARD }
#endif
};



static void
location_button_toggled_cb (GtkToggleButton *toggle,
                      NautilusNavigationWindow *window)
{
      gboolean is_active;

      is_active = gtk_toggle_button_get_active (toggle);
      eel_preferences_set_boolean (NAUTILUS_PREFERENCES_ALWAYS_USE_LOCATION_ENTRY, is_active);

      if (is_active) {
            nautilus_navigation_bar_activate (NAUTILUS_NAVIGATION_BAR (window->navigation_bar));
      }
}

static gboolean
location_button_should_be_active (NautilusNavigationWindow *window)
{
      return eel_preferences_get_boolean (NAUTILUS_PREFERENCES_ALWAYS_USE_LOCATION_ENTRY);
}

static GtkWidget *
location_button_create (NautilusNavigationWindow *window)
{
      GtkWidget *image;
      GtkWidget *button;

      image = gtk_image_new_from_stock (GTK_STOCK_EDIT, GTK_ICON_SIZE_BUTTON);
      gtk_widget_show (image);

      button = g_object_new (GTK_TYPE_TOGGLE_BUTTON,
                         "image", image,
                         "focus-on-click", FALSE,
                         "active", location_button_should_be_active (window),
                         NULL);

      gtk_widget_set_tooltip_text (button,
                             _("Toggle between button and text-based location bar"));

      g_signal_connect (button, "toggled",
                    G_CALLBACK (location_button_toggled_cb), window);
      return button;
}

static gboolean
notebook_switch_page_cb (GtkNotebook *notebook,
                   GtkNotebookPage *page,
                   unsigned int page_num,
                   NautilusNavigationWindow *window)
{
      NautilusWindow *nautilus_window;
      NautilusWindowSlot *slot;
      GtkWidget *widget;

      nautilus_window = NAUTILUS_WINDOW (window);

      widget = gtk_notebook_get_nth_page (GTK_NOTEBOOK (window->notebook), page_num);
      g_assert (widget != NULL);

      /* find slot corresponding to the target page */
      slot = nautilus_window_get_slot_for_content_box (nautilus_window, widget);
      g_assert (slot != NULL);

      nautilus_window_set_active_slot (nautilus_window, slot);

      return FALSE;
}

/* emitted when the user clicks the "close" button of tabs */
static void
notebook_tab_close_requested (NautilusNotebook *notebook,
                        NautilusWindowSlot *slot,
                        NautilusWindow *window)
{
      g_assert (slot->window == window);
      nautilus_window_slot_close (slot);
}

static void
notebook_popup_menu_move_left_cb (GtkMenuItem *menuitem,
                          gpointer user_data)
{
      NautilusNavigationWindow *window;

      window = NAUTILUS_NAVIGATION_WINDOW (user_data);
      nautilus_notebook_reorder_current_child_relative (NAUTILUS_NOTEBOOK (window->notebook), -1);
}

static void
notebook_popup_menu_move_right_cb (GtkMenuItem *menuitem,
                           gpointer user_data)
{
      NautilusNavigationWindow *window;

      window = NAUTILUS_NAVIGATION_WINDOW (user_data);
      nautilus_notebook_reorder_current_child_relative (NAUTILUS_NOTEBOOK (window->notebook), 1);
}

static void
notebook_popup_menu_close_cb (GtkMenuItem *menuitem,
                        gpointer user_data)
{
      NautilusNavigationWindow *window;
      NautilusWindowSlot *slot;

      window = NAUTILUS_NAVIGATION_WINDOW (user_data);
      slot = nautilus_window_get_active_slot (NAUTILUS_WINDOW (window));
      nautilus_window_slot_close (slot);
}

static void
notebook_popup_menu_show (NautilusNavigationWindow *window,
                    GdkEventButton *event)
{
      GtkWidget *popup;
      GtkWidget *item;
      GtkWidget *image;
      int button, event_time;
      gboolean can_move_left, can_move_right;

      can_move_left = nautilus_notebook_can_reorder_current_child_relative (NAUTILUS_NOTEBOOK (window->notebook), -1);
      can_move_right = nautilus_notebook_can_reorder_current_child_relative (NAUTILUS_NOTEBOOK (window->notebook), 1);

      popup = gtk_menu_new();

      item = gtk_menu_item_new_with_mnemonic (_("Move Tab _Left"));
      g_signal_connect (item, "activate", 
                    G_CALLBACK (notebook_popup_menu_move_left_cb), 
                    window);
      gtk_menu_shell_append (GTK_MENU_SHELL (popup), 
                           item);
      gtk_widget_set_sensitive (item, can_move_left);

      item = gtk_menu_item_new_with_mnemonic (_("Move Tab _Right"));
      g_signal_connect (item, "activate", 
                    G_CALLBACK (notebook_popup_menu_move_right_cb), 
                    window);
      gtk_menu_shell_append (GTK_MENU_SHELL (popup), 
                           item);
      gtk_widget_set_sensitive (item, can_move_right);

      gtk_menu_shell_append (GTK_MENU_SHELL (popup),
                         gtk_separator_menu_item_new ());

      item = gtk_image_menu_item_new_with_mnemonic (_("_Close Tab"));
      image = gtk_image_new_from_stock (GTK_STOCK_CLOSE, GTK_ICON_SIZE_MENU);
      gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);
      g_signal_connect (item, "activate", 
                    G_CALLBACK (notebook_popup_menu_close_cb), window);
      gtk_menu_shell_append (GTK_MENU_SHELL (popup), 
                           item);

      gtk_widget_show_all (popup);

      if (event) {
            button = event->button;
            event_time = event->time;
      } else {
            button = 0;
            event_time = gtk_get_current_event_time ();
      }
      
      /* TODO is this correct? */
      gtk_menu_attach_to_widget (GTK_MENU (popup), 
                           GTK_WIDGET (window->notebook), 
                           NULL); 

      gtk_menu_popup (GTK_MENU (popup), NULL, NULL, NULL, NULL, 
                  button, event_time);
}

static gboolean
notebook_popup_menu_cb (GtkWidget *widget,
                  gpointer user_data)
{
      NautilusNavigationWindow *window;

      window = NAUTILUS_NAVIGATION_WINDOW (user_data);
      notebook_popup_menu_show (window, NULL);
      return TRUE;
}

static gboolean
notebook_button_press_cb (GtkWidget *widget,
                    GdkEventButton *event,
                    gpointer user_data)
{
      NautilusNavigationWindow *window;

      window = NAUTILUS_NAVIGATION_WINDOW (user_data);
      if (GDK_BUTTON_PRESS == event->type && 3 == event->button) {
            notebook_popup_menu_show (window, event);
            return TRUE;
      }

      return FALSE;
}

static void
nautilus_navigation_window_init (NautilusNavigationWindow *window)
{
      GtkUIManager *ui_manager;
      GtkWidget *toolbar;
      GtkWidget *location_bar;
      GtkWidget *view_as_menu_vbox;
      GtkToolItem *item;
      GtkWidget *hbox;

      window->details = G_TYPE_INSTANCE_GET_PRIVATE (window, NAUTILUS_TYPE_NAVIGATION_WINDOW, NautilusNavigationWindowDetails);

      window->details->content_paned = nautilus_horizontal_splitter_new ();
      gtk_table_attach (GTK_TABLE (NAUTILUS_WINDOW (window)->details->table),
                    window->details->content_paned,
                    /* X direction */                   /* Y direction */
                    0, 1,                               3, 4,
                    GTK_EXPAND | GTK_FILL | GTK_SHRINK, GTK_EXPAND | GTK_FILL | GTK_SHRINK,
                    0,                                  0);
      gtk_widget_show (window->details->content_paned);

      window->notebook = g_object_new (NAUTILUS_TYPE_NOTEBOOK, NULL);
      g_signal_connect (window->notebook,
                    "tab-close-request",
                    G_CALLBACK (notebook_tab_close_requested),
                    window);
      g_signal_connect_after (window->notebook,
                        "button_press_event",
                        G_CALLBACK (notebook_button_press_cb),
                        window);
      g_signal_connect (window->notebook, "popup-menu",
                    G_CALLBACK (notebook_popup_menu_cb),
                    window);
      nautilus_horizontal_splitter_pack2 (
            NAUTILUS_HORIZONTAL_SPLITTER (window->details->content_paned),
            window->notebook);
      g_signal_connect (window->notebook,
                    "switch-page",
                    G_CALLBACK (notebook_switch_page_cb),
                    window);
      gtk_notebook_set_show_tabs (GTK_NOTEBOOK (window->notebook), FALSE);
      gtk_notebook_set_show_border (GTK_NOTEBOOK (window->notebook), FALSE);
      gtk_widget_show (window->notebook);
      
      nautilus_navigation_window_initialize_actions (window);
      nautilus_navigation_window_initialize_menus (window);
      
      ui_manager = nautilus_window_get_ui_manager (NAUTILUS_WINDOW (window));
      toolbar = gtk_ui_manager_get_widget (ui_manager, "/Toolbar");
      window->details->toolbar = toolbar;
      gtk_table_attach (GTK_TABLE (NAUTILUS_WINDOW (window)->details->table),
                    toolbar,
                    /* X direction */                   /* Y direction */
                    0, 1,                               1, 2,
                    GTK_EXPAND | GTK_FILL | GTK_SHRINK, 0,
                    0,                                  0);
      gtk_widget_show (toolbar);

      nautilus_navigation_window_initialize_toolbars (window);

      /* Set initial sensitivity of some buttons & menu items 
       * now that they're all created.
       */
      nautilus_navigation_window_allow_back (window, FALSE);
      nautilus_navigation_window_allow_forward (window, FALSE);

      /* set up location bar */
      location_bar = gtk_toolbar_new ();
      window->details->location_bar = location_bar;

      hbox = gtk_hbox_new (FALSE, 12);
      gtk_widget_show (hbox);

      item = gtk_tool_item_new ();
      gtk_container_set_border_width (GTK_CONTAINER (item), GNOME_PAD_SMALL);
      gtk_widget_show (GTK_WIDGET (item));
      gtk_tool_item_set_expand (item, TRUE);
      gtk_container_add (GTK_CONTAINER (item),  hbox);
      gtk_toolbar_insert (GTK_TOOLBAR (location_bar),
                      item, -1);

      window->details->location_button = location_button_create (window);
      gtk_box_pack_start (GTK_BOX (hbox), window->details->location_button, FALSE, FALSE, 0);
      gtk_widget_show (window->details->location_button);

      window->path_bar = g_object_new (NAUTILUS_TYPE_PATH_BAR, NULL);
      gtk_widget_show (window->path_bar);
      
      g_signal_connect_object (window->path_bar, "path_clicked",
                         G_CALLBACK (path_bar_location_changed_callback), window, 0);
      g_signal_connect_object (window->path_bar, "path_set",
                         G_CALLBACK (path_bar_path_set_callback), window, 0);
      
      gtk_box_pack_start (GTK_BOX (hbox),
                      window->path_bar,
                      TRUE, TRUE, 0);

      window->navigation_bar = nautilus_location_bar_new (window);
      g_signal_connect_object (window->navigation_bar, "location_changed",
                         G_CALLBACK (navigation_bar_location_changed_callback), window, 0);
      g_signal_connect_object (window->navigation_bar, "cancel",
                         G_CALLBACK (navigation_bar_cancel_callback), window, 0);

      gtk_box_pack_start (GTK_BOX (hbox),
                      window->navigation_bar,
                      TRUE, TRUE, 0);

      window->search_bar = nautilus_search_bar_new ();
      g_signal_connect_object (window->search_bar, "activate",
                         G_CALLBACK (search_bar_activate_callback), window, 0);
      g_signal_connect_object (window->search_bar, "cancel",
                         G_CALLBACK (search_bar_cancel_callback), window, 0);
      gtk_box_pack_start (GTK_BOX (hbox),
                      window->search_bar,
                      TRUE, TRUE, 0);

      /* Option menu for content view types; it's empty here, filled in when a uri is set.
       * Pack it into vbox so it doesn't grow vertically when location bar does. 
       */
      view_as_menu_vbox = gtk_vbox_new (FALSE, GNOME_PAD_SMALL);
      gtk_widget_show (view_as_menu_vbox);

      item = gtk_tool_item_new ();
      gtk_container_set_border_width (GTK_CONTAINER (item), GNOME_PAD_SMALL);
      gtk_widget_show (GTK_WIDGET (item));
      gtk_container_add (GTK_CONTAINER (item), view_as_menu_vbox);
      gtk_toolbar_insert (GTK_TOOLBAR (location_bar),
                      item, -1);
      
      window->view_as_combo_box = gtk_combo_box_new_text ();
      gtk_combo_box_set_focus_on_click (GTK_COMBO_BOX (window->view_as_combo_box), FALSE);
      gtk_box_pack_end (GTK_BOX (view_as_menu_vbox), window->view_as_combo_box, TRUE, FALSE, 0);
      gtk_widget_show (window->view_as_combo_box);
      g_signal_connect_object (window->view_as_combo_box, "changed",
                         G_CALLBACK (view_as_menu_switch_views_callback), window, 0);

      /* Allocate the zoom control and place on the right next to the menu.
       * It gets shown later, if the view-frame contains something zoomable.
       */
      window->zoom_control = nautilus_zoom_control_new ();
      g_signal_connect_object (window->zoom_control, "zoom_in",
                         G_CALLBACK (nautilus_window_zoom_in),
                         window, G_CONNECT_SWAPPED);
      g_signal_connect_object (window->zoom_control, "zoom_out",
                         G_CALLBACK (nautilus_window_zoom_out),
                         window, G_CONNECT_SWAPPED);
      g_signal_connect_object (window->zoom_control, "zoom_to_level",
                         G_CALLBACK (nautilus_window_zoom_to_level),
                         window, G_CONNECT_SWAPPED);
      g_signal_connect_object (window->zoom_control, "zoom_to_default",
                         G_CALLBACK (nautilus_window_zoom_to_default),
                         window, G_CONNECT_SWAPPED);
      
      item = gtk_tool_item_new ();
      gtk_container_set_border_width (GTK_CONTAINER (item), GNOME_PAD_SMALL);
      gtk_widget_show (GTK_WIDGET (item));
      gtk_container_add (GTK_CONTAINER (item),  window->zoom_control);
      gtk_toolbar_insert (GTK_TOOLBAR (location_bar),
                      item, 1);

      gtk_widget_show (location_bar);

      gtk_table_attach (GTK_TABLE (NAUTILUS_WINDOW (window)->details->table),
                    location_bar,
                    /* X direction */                    /* Y direction */
                    0, 1,                                2, 3,
                    GTK_EXPAND | GTK_FILL | GTK_SHRINK,  0,
                    0,                                   0);

      eel_preferences_add_callback_while_alive (NAUTILUS_PREFERENCES_ALWAYS_USE_LOCATION_ENTRY,
                                      always_use_location_entry_changed,
                                      window, G_OBJECT (window));

      eel_preferences_add_callback_while_alive (NAUTILUS_PREFERENCES_ALWAYS_USE_BROWSER,
                                      always_use_browser_changed,
                                      window, G_OBJECT (window));

      eel_preferences_add_callback_while_alive (NAUTILUS_PREFERENCES_ENABLE_TABS,
                                      enable_tabs_changed,
                                      window, G_OBJECT (window));
}

static void
always_use_location_entry_changed (gpointer callback_data)
{
      NautilusNavigationWindow *window;
      gboolean use_entry;

      window = NAUTILUS_NAVIGATION_WINDOW (callback_data);

      use_entry = eel_preferences_get_boolean (NAUTILUS_PREFERENCES_ALWAYS_USE_LOCATION_ENTRY);

      if (use_entry) {
            nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_NAVIGATION);
      } else {
            nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_PATH);
      }

      g_signal_handlers_block_by_func (window->details->location_button,
                               G_CALLBACK (location_button_toggled_cb),
                               window);
      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (window->details->location_button), use_entry);
      g_signal_handlers_unblock_by_func (window->details->location_button,
                                 G_CALLBACK (location_button_toggled_cb),
                                 window);
}

static void
always_use_browser_changed (gpointer callback_data)
{
      NautilusNavigationWindow *window;

      window = NAUTILUS_NAVIGATION_WINDOW (callback_data);

      nautilus_navigation_window_update_spatial_menu_item (window);
}

static void
enable_tabs_changed (gpointer callback_data)
{
      NautilusNavigationWindow *window;

      window = NAUTILUS_NAVIGATION_WINDOW (callback_data);

      nautilus_navigation_window_update_tab_menu_item_visibility (window);
}

static int
bookmark_list_get_uri_index (GList *list,
                       GFile *location)
{
      NautilusBookmark *bookmark;
      GList *l;
      GFile *tmp;
      int i;

      g_return_val_if_fail (location != NULL, -1);

      for (i = 0, l = list; l != NULL; i++, l = l->next) {
            bookmark = NAUTILUS_BOOKMARK (l->data);

            tmp = nautilus_bookmark_get_location (bookmark);
            if (g_file_equal (location, tmp)) {
                  g_object_unref (tmp);
                  return i;
            }
            g_object_unref (tmp);
      }

      return -1;
}

static void
path_bar_location_changed_callback (GtkWidget *widget,
                            GFile *location,
                            NautilusNavigationWindow *window)
{
      NautilusNavigationWindowSlot *slot;
      int i;

      g_assert (NAUTILUS_IS_NAVIGATION_WINDOW (window));

      slot = NAUTILUS_NAVIGATION_WINDOW_SLOT (NAUTILUS_WINDOW (window)->details->active_slot);

      /* check whether we already visited the target location */
      i = bookmark_list_get_uri_index (slot->back_list, location);
      if (i >= 0) {
            nautilus_navigation_window_back_or_forward (window, TRUE, i, FALSE);
      } else {
            nautilus_window_go_to (NAUTILUS_WINDOW (window), location);
      }
}

static void
unset_focus_widget (NautilusNavigationWindow *window)
{
      if (window->details->last_focus_widget != NULL) {
            g_object_remove_weak_pointer (G_OBJECT (window->details->last_focus_widget),
                                    (gpointer *) &window->details->last_focus_widget);
            window->details->last_focus_widget = NULL;
      }
}

static inline gboolean
is_in_temporary_navigation_bar (GtkWidget *widget,
                        NautilusNavigationWindow *window)
{
      return gtk_widget_get_ancestor (widget, NAUTILUS_TYPE_NAVIGATION_BAR) != NULL &&
             window->details->temporary_navigation_bar;
}

static inline gboolean
is_in_temporary_search_bar (GtkWidget *widget,
                      NautilusNavigationWindow *window)
{
      return gtk_widget_get_ancestor (widget, NAUTILUS_TYPE_SEARCH_BAR) != NULL &&
             window->details->temporary_search_bar;
}


static void
remember_focus_widget (NautilusNavigationWindow *window)
{
      NautilusNavigationWindow *navigation_window;
      GtkWidget *focus_widget;

      navigation_window = NAUTILUS_NAVIGATION_WINDOW (window);

      focus_widget = gtk_window_get_focus (GTK_WINDOW (window));
      if (focus_widget != NULL &&
          !is_in_temporary_navigation_bar (focus_widget, navigation_window) &&
          !is_in_temporary_search_bar (focus_widget, navigation_window)) {
            unset_focus_widget (navigation_window);

            navigation_window->details->last_focus_widget = focus_widget;
            g_object_add_weak_pointer (G_OBJECT (focus_widget),
                                 (gpointer *) &(NAUTILUS_NAVIGATION_WINDOW (window)->details->last_focus_widget));
      }
}

static void
restore_focus_widget (NautilusNavigationWindow *window)
{
      if (window->details->last_focus_widget != NULL) {
            if (NAUTILUS_IS_VIEW (window->details->last_focus_widget)) {
                  nautilus_view_grab_focus (NAUTILUS_VIEW (window->details->last_focus_widget));
            } else {
                  gtk_widget_grab_focus (window->details->last_focus_widget);
            }

            unset_focus_widget (window);
      }
}

static gboolean
hide_temporary_bars (NautilusNavigationWindow *window)
{
      NautilusWindowSlot *slot;
      NautilusDirectory *directory;
      gboolean success;

      g_assert (NAUTILUS_IS_NAVIGATION_WINDOW (window));

      slot = nautilus_window_get_active_slot (NAUTILUS_WINDOW (window));

      success = FALSE;

      if (window->details->temporary_location_bar) {
            if (nautilus_navigation_window_location_bar_showing (window)) {
                  nautilus_navigation_window_hide_location_bar (window, FALSE);
            }
            window->details->temporary_location_bar = FALSE;
            success = TRUE;
      }
      if (window->details->temporary_navigation_bar) {
            directory = nautilus_directory_get (slot->location);

            if (NAUTILUS_IS_SEARCH_DIRECTORY (directory)) {
                  nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_SEARCH);
            } else {
                  if (!eel_preferences_get_boolean (NAUTILUS_PREFERENCES_ALWAYS_USE_LOCATION_ENTRY)) {
                        nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_PATH);
                  }
            }
            window->details->temporary_navigation_bar = FALSE;
            success = TRUE;

            nautilus_directory_unref (directory);
      }
      if (window->details->temporary_search_bar) {
            if (!eel_preferences_get_boolean (NAUTILUS_PREFERENCES_ALWAYS_USE_LOCATION_ENTRY)) {
                  nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_PATH);
            } else {
                  nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_NAVIGATION);
            }
            window->details->temporary_search_bar = FALSE;
            success = TRUE;
      }

      return success;
}

static void
navigation_bar_cancel_callback (GtkWidget *widget,
                        NautilusNavigationWindow *window)
{
      if (hide_temporary_bars (window)) {
            restore_focus_widget (window);
      }
}

static void
navigation_bar_location_changed_callback (GtkWidget *widget,
                                const char *uri,
                                NautilusNavigationWindow *window)
{
      GFile *location;
      
      if (hide_temporary_bars (window)) {
            restore_focus_widget (window);
      }

      location = g_file_new_for_uri (uri);
      nautilus_window_go_to (NAUTILUS_WINDOW (window), location);
      g_object_unref (location);
}

static void
side_pane_close_requested_callback (GtkWidget *widget,
                            gpointer user_data)
{
      NautilusNavigationWindow *window;
      
      window = NAUTILUS_NAVIGATION_WINDOW (user_data);

      nautilus_navigation_window_hide_sidebar (window);
}

static void
side_pane_size_allocate_callback (GtkWidget *widget,
                          GtkAllocation *allocation,
                          gpointer user_data)
{
      NautilusNavigationWindow *window;
      
      window = NAUTILUS_NAVIGATION_WINDOW (user_data);
      
      if (allocation->width != window->details->side_pane_width) {
            window->details->side_pane_width = allocation->width;
            if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_SIDEBAR_WIDTH)) {
                  eel_preferences_set_integer
                        (NAUTILUS_PREFERENCES_SIDEBAR_WIDTH, 
                         allocation->width <= 1 ? 0 : allocation->width);
            }
      }
}

static void
setup_side_pane_width (NautilusNavigationWindow *window)
{
      static gboolean setup_auto_value= TRUE;

      g_return_if_fail (window->sidebar != NULL);
      
      if (setup_auto_value) {
            setup_auto_value = FALSE;
            eel_preferences_add_auto_integer 
                  (NAUTILUS_PREFERENCES_SIDEBAR_WIDTH,
                   &side_pane_width_auto_value);
      }

      window->details->side_pane_width = side_pane_width_auto_value;

      /* FIXME bugzilla.gnome.org 41245: Saved in pixels instead of in %? */
        /* FIXME bugzilla.gnome.org 41245: No reality check on the value? */
      
      gtk_paned_set_position (GTK_PANED (window->details->content_paned), 
                        side_pane_width_auto_value);
}

static void
set_current_side_panel (NautilusNavigationWindow *window,
                  NautilusSidebar *panel)
{
      if (window->details->current_side_panel) {
            nautilus_sidebar_is_visible_changed (window->details->current_side_panel,
                                         FALSE);
            eel_remove_weak_pointer (&window->details->current_side_panel);
      }

      if (panel != NULL) {
            nautilus_sidebar_is_visible_changed (panel, TRUE);
      }
      window->details->current_side_panel = panel;
      eel_add_weak_pointer (&window->details->current_side_panel);
}

static void
side_pane_switch_page_callback (NautilusSidePane *side_pane,
                        GtkWidget *widget,
                        NautilusNavigationWindow *window)
{
      const char *id;
      NautilusSidebar *sidebar;

      sidebar = NAUTILUS_SIDEBAR (widget);

      if (sidebar == NULL) {
            return;
      }
            
      set_current_side_panel (window, sidebar);

      id = nautilus_sidebar_get_sidebar_id (sidebar);
      if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_SIDE_PANE_VIEW)) {
            eel_preferences_set (NAUTILUS_PREFERENCES_SIDE_PANE_VIEW, id);
      }
}

static void
nautilus_navigation_window_set_up_sidebar (NautilusNavigationWindow *window)
{
      window->sidebar = nautilus_side_pane_new ();

      gtk_paned_pack1 (GTK_PANED (window->details->content_paned),
                   GTK_WIDGET (window->sidebar),
                   FALSE, TRUE);

      setup_side_pane_width (window);
      g_signal_connect (window->sidebar, 
                    "size_allocate",
                    G_CALLBACK (side_pane_size_allocate_callback),
                    window);
      
      add_sidebar_panels (window);

      g_signal_connect (window->sidebar,
                    "close_requested",
                    G_CALLBACK (side_pane_close_requested_callback),
                    window);

      g_signal_connect (window->sidebar,
                    "switch_page",
                    G_CALLBACK (side_pane_switch_page_callback),
                    window);
      
      gtk_widget_show (GTK_WIDGET (window->sidebar));
}

static void
nautilus_navigation_window_tear_down_sidebar (NautilusNavigationWindow *window)
{
      GList *node, *next;
      NautilusSidebar *sidebar_panel;
      
      g_signal_handlers_disconnect_by_func (window->sidebar,
                                    side_pane_switch_page_callback,
                                    window);

      for (node = window->sidebar_panels; node != NULL; node = next) {
            next = node->next;

            sidebar_panel = NAUTILUS_SIDEBAR (node->data);
            
            nautilus_navigation_window_remove_sidebar_panel (window,
                                                 sidebar_panel);
        }

      gtk_widget_destroy (GTK_WIDGET (window->sidebar));
      window->sidebar = NULL;
}

static void
nautilus_navigation_window_unrealize (GtkWidget *widget)
{
      NautilusNavigationWindow *window;
      
      window = NAUTILUS_NAVIGATION_WINDOW (widget);

      GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
}

static gboolean
nautilus_navigation_window_state_event (GtkWidget *widget,
                              GdkEventWindowState *event)
{
      if (event->changed_mask & GDK_WINDOW_STATE_MAXIMIZED) {
            eel_preferences_set_boolean (NAUTILUS_PREFERENCES_NAVIGATION_WINDOW_MAXIMIZED,
                                   event->new_window_state & GDK_WINDOW_STATE_MAXIMIZED);
      }

      if (GTK_WIDGET_CLASS (parent_class)->window_state_event != NULL) {
            return GTK_WIDGET_CLASS (parent_class)->window_state_event (widget, event);
      }

      return FALSE;
}

static gboolean
nautilus_navigation_window_key_press_event (GtkWidget *widget,
                                  GdkEventKey *event)
{
      NautilusNavigationWindow *window;
      int i;

      window = NAUTILUS_NAVIGATION_WINDOW (widget);

      for (i = 0; i < G_N_ELEMENTS (extra_navigation_window_keybindings); i++) {
            if (extra_navigation_window_keybindings[i].keyval == event->keyval) {
                  GtkAction *action;

                  action = gtk_action_group_get_action (window->details->navigation_action_group,
                                                extra_navigation_window_keybindings[i].action);
                  g_assert (action != NULL);

                  g_assert (action != NULL);
                  if (gtk_action_is_sensitive (action)) {
                        gtk_action_activate (action);
                        return TRUE;
                  }

                  break;
            }
      }

      return GTK_WIDGET_CLASS (nautilus_navigation_window_parent_class)->key_press_event (widget, event);
}

static void
nautilus_navigation_window_destroy (GtkObject *object)
{
      NautilusNavigationWindow *window;
      
      window = NAUTILUS_NAVIGATION_WINDOW (object);

      unset_focus_widget (window);

      window->sidebar = NULL;
      g_list_foreach (window->sidebar_panels, (GFunc)g_object_unref, NULL);
      g_list_free (window->sidebar_panels);
      window->sidebar_panels = NULL;

      window->view_as_combo_box = NULL;
      window->navigation_bar = NULL;
      window->path_bar = NULL;
      window->zoom_control = NULL;

      window->details->content_paned = NULL;

      GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

static void
nautilus_navigation_window_finalize (GObject *object)
{
      NautilusNavigationWindow *window;
      
      window = NAUTILUS_NAVIGATION_WINDOW (object);

      nautilus_navigation_window_remove_go_menu_callback (window);

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

/*
 * Main API
 */

void
nautilus_navigation_window_add_sidebar_panel (NautilusNavigationWindow *window,
                                    NautilusSidebar *sidebar_panel)
{
      const char *sidebar_id;
      char *label;
      char *tooltip;
      char *default_id;
      GdkPixbuf *icon;

      g_return_if_fail (NAUTILUS_IS_NAVIGATION_WINDOW (window));
      g_return_if_fail (NAUTILUS_IS_SIDEBAR (sidebar_panel));
      g_return_if_fail (NAUTILUS_IS_SIDE_PANE (window->sidebar));
      g_return_if_fail (g_list_find (window->sidebar_panels, sidebar_panel) == NULL);     

      label = nautilus_sidebar_get_tab_label (sidebar_panel);
      tooltip = nautilus_sidebar_get_tab_tooltip (sidebar_panel);
      nautilus_side_pane_add_panel (window->sidebar, 
                              GTK_WIDGET (sidebar_panel), 
                              label,
                              tooltip);
      g_free (tooltip);
      g_free (label);

      icon = nautilus_sidebar_get_tab_icon (sidebar_panel);
      nautilus_side_pane_set_panel_image (NAUTILUS_NAVIGATION_WINDOW (window)->sidebar,
                                  GTK_WIDGET (sidebar_panel),
                                  icon);
      if (icon) {
            g_object_unref (icon);
      }

      g_signal_connect (sidebar_panel, "tab_icon_changed",
                    (GCallback)side_panel_image_changed_callback, window);

      window->sidebar_panels = g_list_prepend (window->sidebar_panels,
                                     g_object_ref (sidebar_panel));

      /* Show if default */
      sidebar_id = nautilus_sidebar_get_sidebar_id (sidebar_panel);
      default_id = eel_preferences_get (NAUTILUS_PREFERENCES_SIDE_PANE_VIEW);
      if (sidebar_id && default_id && !strcmp (sidebar_id, default_id)) {
            nautilus_side_pane_show_panel (window->sidebar,
                                     GTK_WIDGET (sidebar_panel));
      }     
      g_free (default_id);
}

void
nautilus_navigation_window_remove_sidebar_panel (NautilusNavigationWindow *window,
                                     NautilusSidebar *sidebar_panel)
{
      g_return_if_fail (NAUTILUS_IS_NAVIGATION_WINDOW (window));
      g_return_if_fail (NAUTILUS_IS_SIDEBAR (sidebar_panel));

      if (g_list_find (window->sidebar_panels, sidebar_panel) == NULL) {
            return;
      }

      g_signal_handlers_disconnect_by_func (sidebar_panel, side_panel_image_changed_callback, window);
      
      nautilus_side_pane_remove_panel (window->sidebar, 
                               GTK_WIDGET (sidebar_panel));
      window->sidebar_panels = g_list_remove (window->sidebar_panels, sidebar_panel);
      g_object_unref (sidebar_panel);
}

void
nautilus_navigation_window_go_back (NautilusNavigationWindow *window)
{
      nautilus_navigation_window_back_or_forward (window, TRUE, 0, FALSE);
}

void
nautilus_navigation_window_go_forward (NautilusNavigationWindow *window)
{
      nautilus_navigation_window_back_or_forward (window, FALSE, 0, FALSE);
}

void
nautilus_navigation_window_allow_back (NautilusNavigationWindow *window, gboolean allow)
{
      GtkAction *action;

      action = gtk_action_group_get_action (window->details->navigation_action_group,
                                    NAUTILUS_ACTION_BACK);
      
      gtk_action_set_sensitive (action, allow);
}

void
nautilus_navigation_window_allow_forward (NautilusNavigationWindow *window, gboolean allow)
{
      GtkAction *action;

      action = gtk_action_group_get_action (window->details->navigation_action_group,
                                    NAUTILUS_ACTION_FORWARD);
      
      gtk_action_set_sensitive (action, allow);
}

static void
activate_nth_short_list_item (NautilusWindow *window, guint index)
{
      NautilusWindowSlot *slot;

      g_assert (NAUTILUS_IS_WINDOW (window));

      slot = window->details->active_slot;
      g_assert (index < g_list_length (window->details->short_list_viewers));

      nautilus_window_slot_set_content_view (slot,
                                     g_list_nth_data (window->details->short_list_viewers, index));
}

static void
activate_extra_viewer (NautilusWindow *window)
{
      NautilusWindowSlot *slot;

      g_assert (NAUTILUS_IS_WINDOW (window));

      slot = window->details->active_slot;
      g_assert (window->details->extra_viewer != NULL);

      nautilus_window_slot_set_content_view (slot, window->details->extra_viewer);
}

static void
view_as_menu_switch_views_callback (GtkComboBox *combo_box, NautilusWindow *window)
{         
      int active;
      g_assert (GTK_IS_COMBO_BOX (combo_box));
      g_assert (NAUTILUS_IS_WINDOW (window));

      active = gtk_combo_box_get_active (combo_box);

      if (active < 0) {
            return;
      } else if (active < GPOINTER_TO_INT (g_object_get_data (G_OBJECT (combo_box), "num viewers"))) {
            activate_nth_short_list_item (window, active);
      } else {
            activate_extra_viewer (window);
      }
}

static void
load_view_as_menu (NautilusWindow *window)
{
      NautilusWindowSlot *slot;
      GList *node;
      int index;
      int selected_index = -1;
      GtkTreeModel *model;
      GtkListStore *store;
      const NautilusViewInfo *info;
      GtkComboBox* combo_box;
      
      combo_box = GTK_COMBO_BOX (NAUTILUS_NAVIGATION_WINDOW (window)->view_as_combo_box);
      /* Clear the contents of ComboBox in a wacky way because there
       * is no function to clear all items and also no function to obtain
       * the number of items in a combobox.
       */
      model = gtk_combo_box_get_model (combo_box);
      g_return_if_fail (GTK_IS_LIST_STORE (model));
      store = GTK_LIST_STORE (model);
      gtk_list_store_clear (store);

      slot = window->details->active_slot;

        /* Add a menu item for each view in the preferred list for this location. */
        for (node = window->details->short_list_viewers, index = 0; 
             node != NULL; 
             node = node->next, ++index) {
            info = nautilus_view_factory_lookup (node->data);
            gtk_combo_box_append_text (combo_box, _(info->view_combo_label));

            if (nautilus_window_slot_content_view_matches_iid (slot, (char *)node->data)) {
                  selected_index = index;
            }
        }
      g_object_set_data (G_OBJECT (combo_box), "num viewers", GINT_TO_POINTER (index));
      if (selected_index == -1) {
            const char *id;
            /* We're using an extra viewer, add a menu item for it */

            id = nautilus_window_slot_get_content_view_id (slot);
            info = nautilus_view_factory_lookup (id);
            gtk_combo_box_append_text (GTK_COMBO_BOX (NAUTILUS_NAVIGATION_WINDOW (window)->view_as_combo_box),
                                 _(info->view_combo_label));
            selected_index = index;
      }

      gtk_combo_box_set_active (GTK_COMBO_BOX (NAUTILUS_NAVIGATION_WINDOW (window)->view_as_combo_box), selected_index);
}

static void
real_load_view_as_menu (NautilusWindow *window)
{
      EEL_CALL_PARENT (NAUTILUS_WINDOW_CLASS,
                   load_view_as_menu, (window));

      load_view_as_menu (window);
}

static void
real_sync_title (NautilusWindow *window,
             NautilusWindowSlot *slot)
{
      NautilusNavigationWindow *navigation_window;
      NautilusNotebook *notebook;
      char *full_title;
      char *window_title;

      navigation_window = NAUTILUS_NAVIGATION_WINDOW (window);

      EEL_CALL_PARENT (NAUTILUS_WINDOW_CLASS,
                   sync_title, (window, slot));

      if (slot == window->details->active_slot) {
            full_title = g_strdup_printf (_("%s - File Browser"), slot->title);

            window_title = eel_str_middle_truncate (full_title, MAX_TITLE_LENGTH);
            gtk_window_set_title (GTK_WINDOW (window), window_title);
            g_free (window_title);
            g_free (full_title);
      }

      notebook = NAUTILUS_NOTEBOOK (navigation_window->notebook);
      nautilus_notebook_sync_tab_label (notebook, slot);

      nautilus_navigation_window_sync_tab_menu_title (navigation_window, slot);
}

static NautilusIconInfo *
real_get_icon (NautilusWindow *window,
             NautilusWindowSlot *slot)
{
      return nautilus_icon_info_lookup_from_name ("system-file-manager", 48);
}

static void
real_sync_allow_stop (NautilusWindow *window,
                  NautilusWindowSlot *slot)
{
      NautilusNavigationWindow *navigation_window;
      NautilusNotebook *notebook;

      navigation_window = NAUTILUS_NAVIGATION_WINDOW (window);
      nautilus_navigation_window_set_throbber_active (navigation_window, slot->allow_stop);

      notebook = NAUTILUS_NOTEBOOK (navigation_window->notebook);
      nautilus_notebook_sync_loading (notebook, slot);
}

static gboolean
path_bar_button_pressed_callback (GtkWidget *widget,
                          GdkEventButton *event,
                          NautilusNavigationWindow *window)
{
      NautilusWindowSlot *slot;
      NautilusView *view;
      GFile *location;
      char *uri;

      g_object_set_data (G_OBJECT (widget), "handle-button-release",
                     GINT_TO_POINTER (TRUE));

      if (event->button == 3) {
            slot = nautilus_window_get_active_slot (NAUTILUS_WINDOW (window));
            view = slot->content_view;
            if (view != NULL) {
                  location = nautilus_path_bar_get_path_for_button (
                        NAUTILUS_PATH_BAR (window->path_bar), widget);
                  if (location != NULL) {
                        uri = g_file_get_uri (location);
                        nautilus_view_pop_up_location_context_menu (
                              view, event, uri);
                        g_object_unref (G_OBJECT (location));
                        g_free (uri);
                        return TRUE;
                  }
            }
      }

      return FALSE;
}

static gboolean
path_bar_button_released_callback (GtkWidget *widget,
                           GdkEventButton *event,
                           NautilusNavigationWindow *window)
{
      NautilusWindowSlot *slot;
      NautilusWindowOpenFlags flags;
      GFile *location;
      int mask;
      gboolean handle_button_release;

      mask = event->state & gtk_accelerator_get_default_mod_mask ();
      flags = 0;

      handle_button_release = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (widget),
                                      "handle-button-release"));

      if (event->type == GDK_BUTTON_RELEASE && handle_button_release) {
            location = nautilus_path_bar_get_path_for_button (NAUTILUS_PATH_BAR (window->path_bar), widget);

            if (event->button == 2 && mask == 0) {
                  if (eel_preferences_get_boolean (NAUTILUS_PREFERENCES_ENABLE_TABS)) {
                        flags = NAUTILUS_WINDOW_OPEN_FLAG_NEW_TAB;
                  } else {
                        flags = NAUTILUS_WINDOW_OPEN_FLAG_NEW_WINDOW;
                  }
            } else if (event->button == 1 && mask == GDK_CONTROL_MASK) {
                  flags = NAUTILUS_WINDOW_OPEN_FLAG_NEW_WINDOW;
            }

            if (flags != 0) {
                  slot = nautilus_window_get_active_slot (NAUTILUS_WINDOW (window));
                  nautilus_window_slot_info_open_location (slot, location,
                                                 NAUTILUS_WINDOW_OPEN_ACCORDING_TO_MODE,
                                                 flags, NULL);
                  g_object_unref (location);
                  return TRUE;
            }

            g_object_unref (location);
      }

      return FALSE;
}

static void
path_bar_button_drag_begin_callback (GtkWidget *widget,
                             GdkEventButton *event,
                             gpointer user_data)
{
      g_object_set_data (G_OBJECT (widget), "handle-button-release",
                     GINT_TO_POINTER (FALSE));
}


static void
path_bar_path_set_callback (GtkWidget *widget,
                      GFile *location,
                      NautilusNavigationWindow *window)
{
      GList *children, *l;
      GtkWidget *child;

      children = gtk_container_get_children (GTK_CONTAINER (widget));

      for (l = children; l != NULL; l = l->next) {
            child = GTK_WIDGET (l->data);

            if (!GTK_IS_TOGGLE_BUTTON (child)) {
                  continue;
            }

            if (!g_signal_handler_find (child,
                                  G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA,
                                  0, 0, NULL, 
                                  path_bar_button_pressed_callback,
                                  window)) {
                  g_signal_connect (child, "button-press-event",
                                G_CALLBACK (path_bar_button_pressed_callback),
                                window);
                  g_signal_connect (child, "button-release-event",
                                G_CALLBACK (path_bar_button_released_callback),
                                window);
                  g_signal_connect (child, "drag-begin",
                                G_CALLBACK (path_bar_button_drag_begin_callback),
                                window);
            }
      }

      g_list_free (children);
}

static void
nautilus_navigation_window_show_location_bar_temporarily (NautilusNavigationWindow *window)
{
      if (!nautilus_navigation_window_location_bar_showing (window)) {
            nautilus_navigation_window_show_location_bar (window, FALSE);
            window->details->temporary_location_bar = TRUE;
      }
}

static void
nautilus_navigation_window_show_navigation_bar_temporarily (NautilusNavigationWindow *window)
{
      if (nautilus_navigation_window_path_bar_showing (window)
          || nautilus_navigation_window_search_bar_showing (window)) {
            nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_NAVIGATION);
            window->details->temporary_navigation_bar = TRUE;
      }
      nautilus_navigation_bar_activate 
            (NAUTILUS_NAVIGATION_BAR (window->navigation_bar));
}

static void
real_prompt_for_location (NautilusWindow *window, const char *initial)
{
      remember_focus_widget (NAUTILUS_NAVIGATION_WINDOW (window));

      nautilus_navigation_window_show_location_bar_temporarily (NAUTILUS_NAVIGATION_WINDOW (window));
      nautilus_navigation_window_show_navigation_bar_temporarily (NAUTILUS_NAVIGATION_WINDOW (window));
      
      if (initial) {
            nautilus_navigation_bar_set_location (NAUTILUS_NAVIGATION_BAR (NAUTILUS_NAVIGATION_WINDOW (window)->navigation_bar),
                                          initial);
      }
}

static void
search_bar_activate_callback (NautilusSearchBar *bar,
                        NautilusWindow *window)
{
      char *uri, *current_uri;
      NautilusDirectory *directory;
      NautilusSearchDirectory *search_directory;
      NautilusQuery *query;
      GFile *location;

      uri = nautilus_search_directory_generate_new_uri ();
      location = g_file_new_for_uri (uri);
      g_free (uri);
      
      directory = nautilus_directory_get (location);
      
      g_assert (NAUTILUS_IS_SEARCH_DIRECTORY (directory));

      search_directory = NAUTILUS_SEARCH_DIRECTORY (directory);

      query = nautilus_search_bar_get_query (NAUTILUS_SEARCH_BAR (NAUTILUS_NAVIGATION_WINDOW (window)->search_bar));
      if (query != NULL) {
            NautilusWindowSlot *slot = window->details->active_slot;
            if (!nautilus_search_directory_is_indexed (search_directory)) {
                  current_uri = nautilus_window_slot_get_location_uri (slot);
                  nautilus_query_set_location (query, current_uri);
                  g_free (current_uri);
            }
            nautilus_search_directory_set_query (search_directory, query);
            g_object_unref (query);
      }
      
      nautilus_window_go_to (window, location);
      
      nautilus_directory_unref (directory);
      g_object_unref (location);
}

static void
search_bar_cancel_callback (GtkWidget *widget,
                      NautilusNavigationWindow *window)
{
      if (hide_temporary_bars (window)) {
            restore_focus_widget (window);
      }
}

void 
nautilus_navigation_window_show_search (NautilusNavigationWindow *window)
{
      if (!nautilus_navigation_window_search_bar_showing (window)) {
            remember_focus_widget (window);

            nautilus_navigation_window_show_location_bar_temporarily (window);
            nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_SEARCH);
            window->details->temporary_search_bar = TRUE;
            nautilus_search_bar_clear (NAUTILUS_SEARCH_BAR (window->search_bar));
      }
      
      nautilus_search_bar_grab_focus (NAUTILUS_SEARCH_BAR (window->search_bar));
}

/* either called due to slot change, or due to location change in the current slot. */
static void
real_sync_search_widgets (NautilusWindow *window)
{
      NautilusNavigationWindow *navigation_window;
      NautilusWindowSlot *slot;
      NautilusDirectory *directory;
      NautilusSearchDirectory *search_directory;

      navigation_window = NAUTILUS_NAVIGATION_WINDOW (window);

      slot = window->details->active_slot;

      search_directory = NULL;

      directory = nautilus_directory_get (slot->location);
      if (NAUTILUS_IS_SEARCH_DIRECTORY (directory)) {
            search_directory = NAUTILUS_SEARCH_DIRECTORY (directory);
      }

      if (search_directory != NULL &&
          !nautilus_search_directory_is_saved_search (search_directory)) {
            nautilus_navigation_window_show_location_bar_temporarily (navigation_window);
            nautilus_navigation_window_set_bar_mode (navigation_window, NAUTILUS_BAR_SEARCH);
            navigation_window->details->temporary_search_bar = FALSE;
      } else {
            navigation_window->details->temporary_search_bar = TRUE;
            hide_temporary_bars (navigation_window);
      }
}


static void
real_sync_zoom_widgets (NautilusWindow *nautilus_window)
{
      NautilusNavigationWindow *window;
      NautilusWindowSlot *slot;
      NautilusView *view;
      gboolean supports_zooming, can_zoom;

      window = NAUTILUS_NAVIGATION_WINDOW (nautilus_window);

      slot = nautilus_window->details->active_slot;
      view = slot->content_view;

      EEL_CALL_PARENT (NAUTILUS_WINDOW_CLASS,
                   sync_zoom_widgets, (nautilus_window));

      if (view == NULL) {
            /* don't toggle UI state at all. This might be
             * wrong, but it prevents flickering when opening
             * a new tab and immediately switching to it -
             * before view selection.
             */
            return;
      }

      supports_zooming = nautilus_view_supports_zooming (view);
      can_zoom = supports_zooming &&
               nautilus_view_get_zoom_level (view) >= NAUTILUS_ZOOM_LEVEL_SMALLEST &&
               nautilus_view_get_zoom_level (view) <= NAUTILUS_ZOOM_LEVEL_LARGEST;

      if (window->zoom_control != NULL) {
            if (supports_zooming) {
                  gtk_widget_set_sensitive (window->zoom_control, can_zoom);
                  gtk_widget_show (window->zoom_control);
                  if (can_zoom) {
                        nautilus_zoom_control_set_zoom_level (NAUTILUS_ZOOM_CONTROL (window->zoom_control),
                                                      nautilus_view_get_zoom_level (view));
                  }
            } else {
                  gtk_widget_hide (window->zoom_control);
            }
      }
}

static void
side_panel_image_changed_callback (NautilusSidebar *side_panel,
                                   gpointer callback_data)
{
        NautilusWindow *window;
      GdkPixbuf *icon;

        window = NAUTILUS_WINDOW (callback_data);

      icon = nautilus_sidebar_get_tab_icon (side_panel);
        nautilus_side_pane_set_panel_image (NAUTILUS_NAVIGATION_WINDOW (window)->sidebar,
                                            GTK_WIDGET (side_panel),
                                            icon);
      if (icon != NULL) {
            g_object_unref (icon);
      }
}

/**
 * add_sidebar_panels:
 * @window: A NautilusNavigationWindow
 *
 * Adds all sidebars available
 *
 */
static void
add_sidebar_panels (NautilusNavigationWindow *window)
{
      GtkWidget *current;
      GList *providers;
      GList *p;
      NautilusSidebar *sidebar_panel;

      g_assert (NAUTILUS_IS_NAVIGATION_WINDOW (window));

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

      providers = nautilus_module_get_extensions_for_type (NAUTILUS_TYPE_SIDEBAR_PROVIDER);
      
      for (p = providers; p != NULL; p = p->next) {
            NautilusSidebarProvider *provider;

            provider = NAUTILUS_SIDEBAR_PROVIDER (p->data);
            
            sidebar_panel = nautilus_sidebar_provider_create (provider,
                                                  NAUTILUS_WINDOW_INFO (window));
            nautilus_navigation_window_add_sidebar_panel (window,
                                                sidebar_panel);
            
            g_object_unref (sidebar_panel);
      }

      nautilus_module_extension_list_free (providers);

      current = nautilus_side_pane_get_current_panel (window->sidebar);
      set_current_side_panel
            (window, 
             NAUTILUS_SIDEBAR (current));
}

void 
nautilus_navigation_window_hide_location_bar (NautilusNavigationWindow *window, gboolean save_preference)
{
      window->details->temporary_location_bar = FALSE;
      gtk_widget_hide (window->details->location_bar);
      nautilus_navigation_window_update_show_hide_menu_items (window);
      if (save_preference &&
          eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_START_WITH_LOCATION_BAR)) {
            eel_preferences_set_boolean (NAUTILUS_PREFERENCES_START_WITH_LOCATION_BAR, FALSE);
      }
}

void 
nautilus_navigation_window_show_location_bar (NautilusNavigationWindow *window, gboolean save_preference)
{
      gtk_widget_show (window->details->location_bar);
      nautilus_navigation_window_update_show_hide_menu_items (window);
      if (save_preference &&
          eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_START_WITH_LOCATION_BAR)) {
            eel_preferences_set_boolean (NAUTILUS_PREFERENCES_START_WITH_LOCATION_BAR, TRUE);
      }
}

gboolean
nautilus_navigation_window_location_bar_showing (NautilusNavigationWindow *window)
{
      if (window->details->location_bar != NULL) {
            return GTK_WIDGET_VISIBLE (window->details->location_bar);
      }
      /* If we're not visible yet we haven't changed visibility, so its TRUE */
      return TRUE;
}

gboolean
nautilus_navigation_window_search_bar_showing (NautilusNavigationWindow *window)
{
      if (window->search_bar != NULL) {
            return GTK_WIDGET_VISIBLE (window->search_bar);
      }
      /* If we're not visible yet we haven't changed visibility, so its TRUE */
      return TRUE;
}

static void
nautilus_navigation_window_set_bar_mode (NautilusNavigationWindow *window,
                               NautilusBarMode mode)
{
      switch (mode) {

      case NAUTILUS_BAR_PATH:
            gtk_widget_show (window->path_bar);
            gtk_widget_hide (window->navigation_bar);
            gtk_widget_hide (window->search_bar);
            break;

      case NAUTILUS_BAR_NAVIGATION:
            gtk_widget_show (window->navigation_bar);
            gtk_widget_hide (window->path_bar);
            gtk_widget_hide (window->search_bar);
            break;

      case NAUTILUS_BAR_SEARCH:
            gtk_widget_show (window->search_bar);
            gtk_widget_hide (window->path_bar);
            gtk_widget_hide (window->navigation_bar);
            break;
      }
}

gboolean
nautilus_navigation_window_path_bar_showing (NautilusNavigationWindow *window)
{
      if (window->path_bar != NULL) {
            return GTK_WIDGET_VISIBLE (window->path_bar);
      }
      /* If we're not visible yet we haven't changed visibility, so its TRUE */
      return TRUE;
}

gboolean
nautilus_navigation_window_toolbar_showing (NautilusNavigationWindow *window)
{
      if (window->details->toolbar != NULL) {
            return GTK_WIDGET_VISIBLE (window->details->toolbar);
      }
      /* If we're not visible yet we haven't changed visibility, so its TRUE */
      return TRUE;
}

void 
nautilus_navigation_window_hide_status_bar (NautilusNavigationWindow *window)
{
      gtk_widget_hide (NAUTILUS_WINDOW (window)->details->statusbar);

      nautilus_navigation_window_update_show_hide_menu_items (window);
      if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_START_WITH_STATUS_BAR) &&
          eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_STATUS_BAR)) {
            eel_preferences_set_boolean (NAUTILUS_PREFERENCES_START_WITH_STATUS_BAR, FALSE);
      }
}

void 
nautilus_navigation_window_show_status_bar (NautilusNavigationWindow *window)
{
      gtk_widget_show (NAUTILUS_WINDOW (window)->details->statusbar);

      nautilus_navigation_window_update_show_hide_menu_items (window);
      if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_START_WITH_STATUS_BAR) &&
          !eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_STATUS_BAR)) {
            eel_preferences_set_boolean (NAUTILUS_PREFERENCES_START_WITH_STATUS_BAR, TRUE);
      }
}

gboolean
nautilus_navigation_window_status_bar_showing (NautilusNavigationWindow *window)
{
      if (NAUTILUS_WINDOW (window)->details->statusbar != NULL) {
            return GTK_WIDGET_VISIBLE (NAUTILUS_WINDOW (window)->details->statusbar);
      }
      /* If we're not visible yet we haven't changed visibility, so its TRUE */
      return TRUE;
}


void 
nautilus_navigation_window_hide_toolbar (NautilusNavigationWindow *window)
{
      gtk_widget_hide (window->details->toolbar);
      nautilus_navigation_window_update_show_hide_menu_items (window);
      if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_START_WITH_TOOLBAR) &&
          eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_TOOLBAR)) {
            eel_preferences_set_boolean (NAUTILUS_PREFERENCES_START_WITH_TOOLBAR, FALSE);
      }
}

void 
nautilus_navigation_window_show_toolbar (NautilusNavigationWindow *window)
{
      gtk_widget_show (window->details->toolbar);
      nautilus_navigation_window_update_show_hide_menu_items (window);
      if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_START_WITH_TOOLBAR) &&
          !eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_TOOLBAR)) {
            eel_preferences_set_boolean (NAUTILUS_PREFERENCES_START_WITH_TOOLBAR, TRUE);
      }
}

void 
nautilus_navigation_window_hide_sidebar (NautilusNavigationWindow *window)
{
      if (window->sidebar == NULL) {
            return;
      }

      nautilus_navigation_window_tear_down_sidebar (window);
      nautilus_navigation_window_update_show_hide_menu_items (window);

      if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_START_WITH_SIDEBAR) &&
          eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_SIDEBAR)) {
            eel_preferences_set_boolean (NAUTILUS_PREFERENCES_START_WITH_SIDEBAR, FALSE);
      }
}

void 
nautilus_navigation_window_show_sidebar (NautilusNavigationWindow *window)
{
      if (window->sidebar != NULL) {
            return;
      }

      nautilus_navigation_window_set_up_sidebar (window);
      nautilus_navigation_window_update_show_hide_menu_items (window);
      if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_START_WITH_SIDEBAR) &&
          !eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_SIDEBAR)) {
            eel_preferences_set_boolean (NAUTILUS_PREFERENCES_START_WITH_SIDEBAR, TRUE);
      }
}

gboolean
nautilus_navigation_window_sidebar_showing (NautilusNavigationWindow *window)
{
      g_return_val_if_fail (NAUTILUS_IS_NAVIGATION_WINDOW (window), FALSE);

      return (window->sidebar != NULL)
            && nautilus_horizontal_splitter_is_hidden (NAUTILUS_HORIZONTAL_SPLITTER (window->details->content_paned));
}

/**
 * nautilus_navigation_window_get_base_page_index:
 * @window: Window to get index from
 *
 * Returns the index of the base page in the history list.
 * Base page is not the currently displayed page, but the page
 * that acts as the base from which the back and forward commands
 * navigate from.
 */
gint 
nautilus_navigation_window_get_base_page_index (NautilusNavigationWindow *window)
{
      NautilusNavigationWindowSlot *slot;
      gint forward_count;

      slot = NAUTILUS_NAVIGATION_WINDOW_SLOT (NAUTILUS_WINDOW (window)->details->active_slot);

      forward_count = g_list_length (slot->forward_list); 

      /* If forward is empty, the base it at the top of the list */
      if (forward_count == 0) {
            return 0;
      }

      /* The forward count indicate the relative postion of the base page
       * in the history list
       */ 
      return forward_count;
}



/**
 * nautilus_navigation_window_show:
 * @widget: GtkWidget
 *
 * Call parent and then show/hide window items
 * base on user prefs.
 */
static void
nautilus_navigation_window_show (GtkWidget *widget)
{     
      NautilusNavigationWindow *window;

      window = NAUTILUS_NAVIGATION_WINDOW (widget);

      /* Initially show or hide views based on preferences; once the window is displayed
       * these can be controlled on a per-window basis from View menu items. 
       */

      if (eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_TOOLBAR)) {
            nautilus_navigation_window_show_toolbar (window);
      } else {
            nautilus_navigation_window_hide_toolbar (window);
      }

      if (eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_LOCATION_BAR)) {
            nautilus_navigation_window_show_location_bar (window, FALSE);
      } else {
            nautilus_navigation_window_hide_location_bar (window, FALSE);
      }

      if (eel_preferences_get_boolean (NAUTILUS_PREFERENCES_ALWAYS_USE_LOCATION_ENTRY)) {
            nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_NAVIGATION);
      } else {
            nautilus_navigation_window_set_bar_mode (window, NAUTILUS_BAR_PATH);
      }
      
      if (eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_SIDEBAR)) {
            nautilus_navigation_window_show_sidebar (window);
      } else {
            nautilus_navigation_window_hide_sidebar (window);
      }

      if (eel_preferences_get_boolean (NAUTILUS_PREFERENCES_START_WITH_STATUS_BAR)) {
            nautilus_navigation_window_show_status_bar (window);
      } else {
            nautilus_navigation_window_hide_status_bar (window);
      }

      GTK_WIDGET_CLASS (parent_class)->show (widget);
}

static void
nautilus_navigation_window_save_geometry (NautilusNavigationWindow *window)
{
      char *geometry_string;
      gboolean is_maximized;

      g_assert (NAUTILUS_IS_WINDOW (window));

      if (GTK_WIDGET(window)->window) {
            geometry_string = eel_gtk_window_get_geometry_string (GTK_WINDOW (window));
            is_maximized = gdk_window_get_state (GTK_WIDGET (window)->window)
                        & GDK_WINDOW_STATE_MAXIMIZED;
            
            if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_NAVIGATION_WINDOW_SAVED_GEOMETRY) &&
                !is_maximized) {
                  eel_preferences_set
                        (NAUTILUS_PREFERENCES_NAVIGATION_WINDOW_SAVED_GEOMETRY, 
                         geometry_string);
            }
            g_free (geometry_string);

            if (eel_preferences_key_is_writable (NAUTILUS_PREFERENCES_NAVIGATION_WINDOW_MAXIMIZED)) {
                  eel_preferences_set_boolean
                        (NAUTILUS_PREFERENCES_NAVIGATION_WINDOW_MAXIMIZED, 
                         is_maximized);
            }
      }
}



static void
real_window_close (NautilusWindow *window)
{
      nautilus_navigation_window_save_geometry (NAUTILUS_NAVIGATION_WINDOW (window));
}

static void 
real_get_default_size (NautilusWindow *window,
                   guint *default_width, guint *default_height)
{
      if (default_width) {
            *default_width = NAUTILUS_NAVIGATION_WINDOW_DEFAULT_WIDTH;
      }
      
      if (default_height) {
            *default_height = NAUTILUS_NAVIGATION_WINDOW_DEFAULT_HEIGHT;      
      }
}

static NautilusWindowSlot *
real_open_slot (NautilusWindow *window,
            NautilusWindowOpenSlotFlags flags)
{
      NautilusNavigationWindow *navigation_window;
      NautilusWindowSlot *slot;
      NautilusNotebook *notebook;

      navigation_window = NAUTILUS_NAVIGATION_WINDOW (window);
      notebook = NAUTILUS_NOTEBOOK (navigation_window->notebook);

      slot = (NautilusWindowSlot *) g_object_new (NAUTILUS_TYPE_NAVIGATION_WINDOW_SLOT, NULL);
      slot->window = window;

      g_signal_handlers_block_by_func (notebook,
                               G_CALLBACK (notebook_switch_page_cb),
                               window);
      nautilus_notebook_add_tab (notebook,
                           slot,
                           (flags & NAUTILUS_WINDOW_OPEN_SLOT_APPEND) != 0 ?
                           -1 :
                           gtk_notebook_get_current_page (GTK_NOTEBOOK (notebook)) + 1,
                           FALSE);
      g_signal_handlers_unblock_by_func (notebook,
                                 G_CALLBACK (notebook_switch_page_cb),
                                 window);
      gtk_widget_show (slot->content_box);

      return slot;
}

static void
real_close_slot (NautilusWindow *window,
             NautilusWindowSlot *slot)
{
      NautilusNavigationWindow *navigation_window;
      GtkNotebook *notebook;
      int page_num;

      navigation_window = NAUTILUS_NAVIGATION_WINDOW (window);
      notebook = GTK_NOTEBOOK (navigation_window->notebook);

      page_num = gtk_notebook_page_num (notebook, slot->content_box);
      g_assert (page_num >= 0);

      g_signal_handlers_block_by_func (notebook,
                               G_CALLBACK (notebook_switch_page_cb),
                               window);
      gtk_notebook_remove_page (notebook, page_num);
      g_signal_handlers_unblock_by_func (notebook,
                                 G_CALLBACK (notebook_switch_page_cb),
                                 window);

      gtk_notebook_set_show_tabs (notebook,
                            gtk_notebook_get_n_pages (notebook) > 1);

      EEL_CALL_PARENT (NAUTILUS_WINDOW_CLASS,
                   close_slot, (window, slot));
}

static void
nautilus_navigation_window_class_init (NautilusNavigationWindowClass *class)
{
      NAUTILUS_WINDOW_CLASS (class)->window_type = NAUTILUS_WINDOW_NAVIGATION;
      NAUTILUS_WINDOW_CLASS (class)->bookmarks_placeholder = MENU_PATH_BOOKMARKS_PLACEHOLDER;
      
      G_OBJECT_CLASS (class)->finalize = nautilus_navigation_window_finalize;
      GTK_OBJECT_CLASS (class)->destroy = nautilus_navigation_window_destroy;
      GTK_WIDGET_CLASS (class)->show = nautilus_navigation_window_show;
      GTK_WIDGET_CLASS (class)->unrealize = nautilus_navigation_window_unrealize;
      GTK_WIDGET_CLASS (class)->window_state_event = nautilus_navigation_window_state_event;
      GTK_WIDGET_CLASS (class)->key_press_event = nautilus_navigation_window_key_press_event;
      NAUTILUS_WINDOW_CLASS (class)->load_view_as_menu = real_load_view_as_menu;
      NAUTILUS_WINDOW_CLASS (class)->sync_allow_stop = real_sync_allow_stop;
      NAUTILUS_WINDOW_CLASS (class)->prompt_for_location = real_prompt_for_location;
      NAUTILUS_WINDOW_CLASS (class)->sync_search_widgets = real_sync_search_widgets;
      NAUTILUS_WINDOW_CLASS (class)->sync_zoom_widgets = real_sync_zoom_widgets;
      NAUTILUS_WINDOW_CLASS (class)->sync_title = real_sync_title;
      NAUTILUS_WINDOW_CLASS (class)->get_icon = real_get_icon;
      NAUTILUS_WINDOW_CLASS (class)->get_default_size = real_get_default_size;
      NAUTILUS_WINDOW_CLASS (class)->close = real_window_close;

      NAUTILUS_WINDOW_CLASS (class)->open_slot = real_open_slot;
      NAUTILUS_WINDOW_CLASS (class)->close_slot = real_close_slot;

      g_type_class_add_private (G_OBJECT_CLASS (class), sizeof (NautilusNavigationWindowDetails));
}

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