[epiphany] Change sensitiveness for history buttons when clearing the history

[Xan Lopez <xan src gnome org>]

commit 4592bb6927a5a7017403fbcaa4937aa10c263227
Author: Mario Sanchez Prada <msanchez igalia com>
Date:   Fri Apr 9 19:37:09 2010 +0200

    Change sensitiveness for history buttons when clearing the history
    
    Connect to the 'cleared' signal and change the sensitivity flags
    
    Bug #539716
    
    Signed-off-by: Xan Lopez <xan gnome org>

 src/ephy-action-helper.h             |    5 +++++
 src/ephy-navigation-history-action.c |   15 +++++++++++++++
 src/ephy-toolbar.c                   |    5 -----
 3 files changed, 20 insertions(+), 5 deletions(-)
---
diff --git a/src/ephy-action-helper.h b/src/ephy-action-helper.h
index 331d0fc..71c0bbc 100644
--- a/src/ephy-action-helper.h
+++ b/src/ephy-action-helper.h
@@ -28,6 +28,11 @@
 
 G_BEGIN_DECLS
 
+enum
+{
+	SENS_FLAG = 1 << 0
+};
+
 void ephy_action_change_sensitivity_flags (GtkAction *action,
 					   guint flags,
 					   gboolean set);
diff --git a/src/ephy-navigation-history-action.c b/src/ephy-navigation-history-action.c
index 90345b2..c82f04c 100644
--- a/src/ephy-navigation-history-action.c
+++ b/src/ephy-navigation-history-action.c
@@ -23,6 +23,7 @@
 #include "config.h"
 #include "ephy-navigation-history-action.h"
 
+#include "ephy-action-helper.h"
 #include "ephy-debug.h"
 #include "ephy-embed-container.h"
 #include "ephy-embed-shell.h"
@@ -133,6 +134,13 @@ deselect_menu_item_cb (GtkWidget *menuitem,
   gtk_statusbar_pop (GTK_STATUSBAR (statusbar), statusbar_cid);
 }
 
+static void
+ephy_history_cleared_cb (EphyHistory *history,
+                         EphyNavigationHistoryAction *action)
+{
+  ephy_action_change_sensitivity_flags (GTK_ACTION (action), SENS_FLAG, TRUE);
+}
+
 static GList*
 webkit_construct_history_list (WebKitWebView *web_view, WebKitHistoryType hist_type)
 {
@@ -283,6 +291,10 @@ ephy_navigation_history_action_init (EphyNavigationHistoryAction *action)
 
   history = EPHY_HISTORY (ephy_embed_shell_get_global_history (embed_shell));
   action->priv->history = EPHY_HISTORY (g_object_ref (history));
+
+  g_signal_connect (action->priv->history,
+                    "cleared", G_CALLBACK (ephy_history_cleared_cb),
+                    action);
 }
 
 static void
@@ -290,6 +302,9 @@ ephy_navigation_history_action_finalize (GObject *object)
 {
   EphyNavigationHistoryAction *action = EPHY_NAVIGATION_HISTORY_ACTION (object);
 
+  g_signal_handlers_disconnect_by_func (action->priv->history,
+                                        ephy_history_cleared_cb,
+                                        action);
   g_object_unref (action->priv->history);
   action->priv->history = NULL;
 
diff --git a/src/ephy-toolbar.c b/src/ephy-toolbar.c
index c82b932..c3f0ed7 100644
--- a/src/ephy-toolbar.c
+++ b/src/ephy-toolbar.c
@@ -63,11 +63,6 @@ enum
 	LAST_ACTION
 };
 
-enum
-{
-	SENS_FLAG = 1 << 0
-};
-
 #define EPHY_TOOLBAR_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_TOOLBAR, EphyToolbarPrivate))
 
 struct _EphyToolbarPrivate