Implement history dropdowns

[evince.git] / shell / ev-navigation-action.c

diff --git a/shell/ev-navigation-action.c b/shell/ev-navigation-action.c
index 7b5269a8a5a1af5e727efc61105afb623d58252a..a4a13bcbccf0fd755ba57d29eb9de95626394ae3 100644 (file)
--- a/shell/ev-navigation-action.c
+++ b/shell/ev-navigation-action.c
@@ -37,6 +37,7 @@ struct _EvNavigationActionPrivate
        EvWindow *window;
        EvNavigationDirection direction;
        char *arrow_tooltip;
+       EvHistory *history;
 };
 
 enum
@@ -53,15 +54,87 @@ static GObjectClass *parent_class = NULL;
 
 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))
 
+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);
+}
+
+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"));
+       ev_history_set_current_index (action->priv->history, index);
+}
+
+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);
+       g_object_set_data (G_OBJECT (item), "index",
+                          GINT_TO_POINTER (index));
+
+       label = GTK_LABEL (GTK_BIN (item)->child);
+       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;
+       EvHistory *history = action->priv->history;
+       int start, end, i;
 
        menu = GTK_MENU_SHELL (gtk_menu_new ());
 
+       if (history == NULL) {
+               return GTK_WIDGET (menu);
+       }
+
+       if (action->priv->direction == EV_NAVIGATION_DIRECTION_BACK) {
+               start = 0;
+               end = ev_history_get_current_index (history);
+       } else {
+               start = ev_history_get_current_index (history) + 1;
+               end = ev_history_get_n_links (history);
+       }
+
+       for (i = start; i < end; i++) {
+               EvLink *link = ev_history_get_link_nth (history, i);
+               GtkWidget *item;
+
+               item = new_history_menu_item (action, link, i);
+               gtk_menu_shell_append (menu, item);
+       }
+
        return GTK_WIDGET (menu);
 }
 
@@ -122,6 +195,11 @@ ev_navigation_action_finalize (GObject *object)
 {
        EvNavigationAction *action = EV_NAVIGATION_ACTION (object);
 
+       if (action->priv->history) {
+               g_object_add_weak_pointer (G_OBJECT (action->priv->history),
+                                          (gpointer *) &action->priv->history);
+       }
+
        g_free (action->priv->arrow_tooltip);
 
        parent_class->finalize (object);