From 6d8dfd5546578bd49835aa2dd44e12f0f427f38a Mon Sep 17 00:00:00 2001
From: Tristan Van Berkom <tristan.van.berkom@gmail.com>
Date: Sat, 20 Nov 2010 16:30:51 +0900
Subject: [PATCH] Fixed GtkCellView to not clear the layout when disposing

The layout belongs the underlying area which may be shared across
views and treemenus, let the cells be destroyed when the area is finally
destroyed.
---
 gtk/gtkcellview.c | 37 +++++++++++++++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/gtk/gtkcellview.c b/gtk/gtkcellview.c
index bc5a6ffe46..2fa830f328 100644
--- a/gtk/gtkcellview.c
+++ b/gtk/gtkcellview.c
@@ -52,6 +52,8 @@ struct _GtkCellViewPrivate
 
   GdkRGBA              background;
   gboolean             background_set;
+
+  gulong               size_changed_id;
 };
 
 
@@ -133,6 +135,11 @@ static void       gtk_cell_view_get_preferred_height_for_width (GtkWidget
 								gint                  *minimum_size,
 								gint                  *natural_size);
 
+static void       context_size_changed_cb                      (GtkCellAreaContext   *context,
+								GParamSpec           *pspec,
+								GtkWidget            *view);
+
+
 static GtkBuildableIface *parent_buildable_iface;
 
 enum
@@ -308,6 +315,10 @@ gtk_cell_view_constructor (GType                  type,
   if (!priv->context)
     priv->context = gtk_cell_area_create_context (priv->area);
 
+  priv->size_changed_id = 
+    g_signal_connect (priv->context, "notify",
+		      G_CALLBACK (context_size_changed_cb), view);
+
   return object;
 }
 
@@ -442,8 +453,6 @@ gtk_cell_view_dispose (GObject *object)
 {
   GtkCellView *cellview = GTK_CELL_VIEW (object);
 
-  gtk_cell_view_cell_layout_clear (GTK_CELL_LAYOUT (cellview));
-
   if (cellview->priv->model)
     {
       g_object_unref (cellview->priv->model);
@@ -458,8 +467,11 @@ gtk_cell_view_dispose (GObject *object)
 
   if (cellview->priv->context)
     {
+      g_signal_handler_disconnect (cellview->priv->context, cellview->priv->size_changed_id);
+
       g_object_unref (cellview->priv->context);
       cellview->priv->context = NULL;
+      cellview->priv->size_changed_id = 0;
     }
 
   G_OBJECT_CLASS (gtk_cell_view_parent_class)->dispose (object);
@@ -645,6 +657,19 @@ gtk_cell_view_cell_layout_get_area (GtkCellLayout   *layout)
   return cellview->priv->area;
 }
 
+static void
+context_size_changed_cb (GtkCellAreaContext  *context,
+			 GParamSpec          *pspec,
+			 GtkWidget           *view)
+{
+  if (!strcmp (pspec->name, "minimum-width") ||
+      !strcmp (pspec->name, "natural-width") ||
+      !strcmp (pspec->name, "minimum-height") ||
+      !strcmp (pspec->name, "natural-height"))
+    gtk_widget_queue_resize (view);
+}
+
+
 /**
  * gtk_cell_view_new:
  *
@@ -1164,12 +1189,16 @@ gtk_cell_view_get_preferred_width  (GtkWidget *widget,
   GtkCellView        *cellview = GTK_CELL_VIEW (widget);
   GtkCellViewPrivate *priv = cellview->priv;
 
+  g_signal_handler_block (priv->context, priv->size_changed_id);
+
   if (cellview->priv->displayed_row)
     gtk_cell_view_set_cell_data (cellview);
 
   gtk_cell_area_get_preferred_width (priv->area, priv->context, widget, NULL, NULL);
   gtk_cell_area_context_sum_preferred_width (priv->context);
   gtk_cell_area_context_get_preferred_width (priv->context, minimum_size, natural_size);
+
+  g_signal_handler_unblock (priv->context, priv->size_changed_id);
 }
 
 static void       
@@ -1180,12 +1209,16 @@ gtk_cell_view_get_preferred_height (GtkWidget *widget,
   GtkCellView        *cellview = GTK_CELL_VIEW (widget);
   GtkCellViewPrivate *priv = cellview->priv;
 
+  g_signal_handler_block (priv->context, priv->size_changed_id);
+
   if (cellview->priv->displayed_row)
     gtk_cell_view_set_cell_data (cellview);
 
   gtk_cell_area_get_preferred_height (priv->area, priv->context, widget, NULL, NULL);
   gtk_cell_area_context_sum_preferred_height (priv->context);
   gtk_cell_area_context_get_preferred_height (priv->context, minimum_size, natural_size);
+
+  g_signal_handler_unblock (priv->context, priv->size_changed_id);
 }
 
 static void       
-- 
2.30.2