From d58f069362465e0bd50814853b86ab5341beba79 Mon Sep 17 00:00:00 2001
From: Marco Pesenti Gritti <mpg@redhat.com>
Date: Tue, 10 May 2005 09:33:33 +0000
Subject: Keep a weak reference on proxy->page_cache so that we dont try to

2005-05-10  Marco Pesenti Gritti  <mpg@redhat.com>

        * shell/ev-page-action.c: (ev_page_action_widget_set_page_cache),
        (ev_page_action_widget_finalize),
        (ev_page_action_widget_class_init), (update_page_cache):

        Keep a weak reference on proxy->page_cache so that we
        dont try to disconnect the signal if the object is already
        gone. Maybe there is a better way to cleanup reference handling
        in page action though...
---
(limited to 'shell/ev-page-action.c')

diff --git a/shell/ev-page-action.c b/shell/ev-page-action.c
index deb9b77..57b9bfc 100644
--- a/shell/ev-page-action.c
+++ b/shell/ev-page-action.c
@@ -63,6 +63,9 @@ static GType ev_page_action_widget_get_type   (void);
 static void  ev_page_action_widget_init       (EvPageActionWidget      *action_widget);
 static void  ev_page_action_widget_class_init (EvPageActionWidgetClass *action_widget);
 
+#define EV_TYPE_PAGE_ACTION_WIDGET (ev_page_action_widget_get_type ())
+#define EV_PAGE_ACTION_WIDGET(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EV_TYPE_PAGE_ACTION_WIDGET, EvPageActionWidget))
+
 G_DEFINE_TYPE (EvPageActionWidget, ev_page_action_widget, GTK_TYPE_TOOL_ITEM)
 
 static void
@@ -72,11 +75,37 @@ ev_page_action_widget_init (EvPageActionWidget *action_widget)
 }
 
 static void
-ev_page_action_widget_class_init (EvPageActionWidgetClass *action_widget)
+ev_page_action_widget_set_page_cache (EvPageActionWidget *action_widget,
+				      EvPageCache        *page_cache)
+{
+	if (action_widget->page_cache != NULL) {
+		g_object_remove_weak_pointer (G_OBJECT (action_widget->page_cache),
+					      (gpointer *)&action_widget->page_cache);
+		action_widget->page_cache = NULL;
+	}
+
+	if (page_cache != NULL) {
+		action_widget->page_cache = page_cache;
+		g_object_add_weak_pointer (G_OBJECT (page_cache),
+					   (gpointer *)&action_widget->page_cache);
+	}
+}
+
+static void
+ev_page_action_widget_finalize (GObject *object)
 {
+	EvPageActionWidget *action_widget = EV_PAGE_ACTION_WIDGET (object);
+
+	ev_page_action_widget_set_page_cache (action_widget, NULL);
 }
 
+static void
+ev_page_action_widget_class_init (EvPageActionWidgetClass *class)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (class);
 
+	object_class->finalize = ev_page_action_widget_finalize;
+}
 
 static void ev_page_action_init       (EvPageAction *action);
 static void ev_page_action_class_init (EvPageActionClass *class);
@@ -210,7 +239,7 @@ update_page_cache (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *pr
 		signal_id = 0;
 		page_changed_cb (NULL, 0, proxy);
 	}
-	proxy->page_cache = page_cache;
+	ev_page_action_widget_set_page_cache (proxy, page_cache);
 	proxy->signal_id = signal_id;
 }
 
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