inicial

1 files changed, 247 insertions, 0 deletions

diff --git a/shell/ev-navigation-action.c b/shell/ev-navigation-action.c
new file mode 100644
index 00000000..b34c3789
--- /dev/null
+++ b/shell/ev-navigation-action.c
@@ -0,0 +1,247 @@
+/*
+ *  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));
+}