15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/ui/libgtk2ui/owned_widget_gtk2.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <gtk/gtk.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace libgtk2ui { 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)OwnedWidgetGtk::~OwnedWidgetGtk() { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Destroy(); 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void OwnedWidgetGtk::Own(GtkWidget* widget) { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!widget) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!widget_); 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We want to make sure that Own() was called properly, right after the 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // widget was created. There should be a floating reference. 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(g_object_is_floating(widget)); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Sink the floating reference, we should now own this reference. 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_object_ref_sink(widget); 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) widget_ = widget; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void OwnedWidgetGtk::Destroy() { 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!widget_) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GtkWidget* widget = widget_; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) widget_ = NULL; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gtk_widget_destroy(widget); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!g_object_is_floating(widget)); 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NOTE: Assumes some implementation details about glib internals. 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_EQ(G_OBJECT(widget)->ref_count, 1U); 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_object_unref(widget); 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace libgtk2ui 46