/* * Copyright (C) 2003, 2004 Marco Pesenti Gritti * Copyright (C) 2003, 2004 Christian Persch * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * */ #include "config.h" #include <glib/gi18n.h> #include <gtk/gtk.h> #include "ev-navigation-action.h" #include "ev-navigation-action-widget.h" enum { WIDGET_ACTIVATE_LINK, WIDGET_N_SIGNALS }; static guint widget_signals[WIDGET_N_SIGNALS] = {0, }; struct _EvNavigationActionPrivate { EvHistory *history; }; static void ev_navigation_action_init (EvNavigationAction *action); static void ev_navigation_action_class_init (EvNavigationActionClass *class); G_DEFINE_TYPE (EvNavigationAction, ev_navigation_action, GTK_TYPE_ACTION) #define MAX_LABEL_LENGTH 48 #define EV_NAVIGATION_ACTION_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_NAVIGATION_ACTION, EvNavigationActionPrivate)) static void ev_navigation_action_history_changed (EvHistory *history, gpointer data) { EvNavigationAction *action = EV_NAVIGATION_ACTION (data); gtk_action_set_sensitive (GTK_ACTION (action), ev_history_get_n_links (history) > 0); } void ev_navigation_action_set_history (EvNavigationAction *action, EvHistory *history) { action->priv->history = history; g_object_add_weak_pointer (G_OBJECT (action->priv->history), (gpointer) &action->priv->history); g_signal_connect_object (history, "changed", G_CALLBACK (ev_navigation_action_history_changed), action, 0); } static void activate_menu_item_cb (GtkWidget *widget, EvNavigationAction *action) { int index; g_return_if_fail (EV_IS_HISTORY (action->priv->history)); index = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget), "index")); if (action->priv->history) { EvLink *link; link = ev_history_get_link_nth (action->priv->history, index); g_signal_emit (action, widget_signals[WIDGET_ACTIVATE_LINK], 0, link); } } static GtkWidget * new_history_menu_item (EvNavigationAction *action, EvLink *link, int index) { GtkLabel *label; GtkWidget *item; const char *title; title = ev_link_get_title (link); item = gtk_image_menu_item_new_with_label (title); label = GTK_LABEL (gtk_bin_get_child (GTK_BIN (item))); gtk_label_set_use_markup (label, TRUE); g_object_set_data (G_OBJECT (item), "index", GINT_TO_POINTER (index)); gtk_label_set_ellipsize (label, PANGO_ELLIPSIZE_END); gtk_label_set_max_width_chars (label, MAX_LABEL_LENGTH); g_signal_connect (item, "activate", G_CALLBACK (activate_menu_item_cb), action); gtk_widget_show (item); return item; } static GtkWidget * build_menu (EvNavigationAction *action) { GtkMenuShell *menu; GtkWidget *item; EvLink *link; EvHistory *history = action->priv->history; int start, end, i; if (history == NULL || ev_history_get_n_links (history) <= 0) { return NULL; } menu = GTK_MENU_SHELL (gtk_menu_new ()); start = 0; end = ev_history_get_n_links (history); for (i = start; i < end; i++) { link = ev_history_get_link_nth (history, i); item = new_history_menu_item (action, link, i); gtk_menu_shell_prepend (menu, item); } return GTK_WIDGET (menu); } static void menu_activated_cb (EvNavigationActionWidget *button, EvNavigationAction *action) { GtkWidget *menu; menu = build_menu (action); ev_navigation_action_widget_set_menu (button, menu); } static void connect_proxy (GtkAction *action, GtkWidget *proxy) { GtkWidget *menu; if (GTK_IS_TOOL_ITEM (proxy)) { /* set dummy menu so the arrow gets sensitive */ menu = gtk_menu_new (); ev_navigation_action_widget_set_menu (EV_NAVIGATION_ACTION_WIDGET (proxy), menu); g_signal_connect (proxy, "show-menu", G_CALLBACK (menu_activated_cb), action); } GTK_ACTION_CLASS (ev_navigation_action_parent_class)->connect_proxy (action, proxy); } static GtkWidget * create_tool_item (GtkAction *action) { EvNavigationActionWidget *proxy; proxy = g_object_new (EV_TYPE_NAVIGATION_ACTION_WIDGET, NULL); gtk_widget_show (GTK_WIDGET (proxy)); return GTK_WIDGET (proxy); } static GtkWidget * create_menu_item (GtkAction *action) { GtkWidget *menu; GtkWidget *menu_item; menu = build_menu (EV_NAVIGATION_ACTION (action)); menu_item = GTK_ACTION_CLASS (ev_navigation_action_parent_class)->create_menu_item (action); gtk_menu_item_set_submenu (GTK_MENU_ITEM (menu_item), menu); gtk_widget_show (menu_item); return menu_item; } static void ev_navigation_action_init (EvNavigationAction *action) { action->priv = EV_NAVIGATION_ACTION_GET_PRIVATE (action); } static void ev_navigation_action_finalize (GObject *object) { EvNavigationAction *action = EV_NAVIGATION_ACTION (object); if (action->priv->history) { g_object_remove_weak_pointer (G_OBJECT (action->priv->history), (gpointer) &action->priv->history); action->priv->history = NULL; } G_OBJECT_CLASS (ev_navigation_action_parent_class)->finalize (object); } static void ev_navigation_action_class_init (EvNavigationActionClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); GtkActionClass *action_class = GTK_ACTION_CLASS (class); object_class->finalize = ev_navigation_action_finalize; action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM; action_class->create_tool_item = create_tool_item; action_class->connect_proxy = connect_proxy; action_class->create_menu_item = create_menu_item; widget_signals[WIDGET_ACTIVATE_LINK] = g_signal_new ("activate_link", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvNavigationActionClass, activate_link), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, G_TYPE_OBJECT); g_type_class_add_private (object_class, sizeof (EvNavigationActionPrivate)); }