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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/gtk/g_object_weak_ref.h"
#include "base/logging.h"
class GObjectWeakRef::GObjectWeakRefDelegate
: public base::RefCounted<GObjectWeakRefDelegate> {
public:
explicit GObjectWeakRefDelegate(GObject* object);
GObject* get() const { return object_; }
private:
friend class base::RefCounted<GObjectWeakRefDelegate>;
~GObjectWeakRefDelegate();
static void OnFinalizedThunk(gpointer data, GObject* object);
void OnFinalized(GObject* object);
GObject* object_;
DISALLOW_COPY_AND_ASSIGN(GObjectWeakRefDelegate);
};
GObjectWeakRef::GObjectWeakRefDelegate::GObjectWeakRefDelegate(GObject* object)
: object_(object) {
if (object)
g_object_weak_ref(object, OnFinalizedThunk, this);
}
GObjectWeakRef::GObjectWeakRefDelegate::~GObjectWeakRefDelegate() {
if (object_)
g_object_weak_unref(object_, OnFinalizedThunk, this);
}
// static
void GObjectWeakRef::GObjectWeakRefDelegate::OnFinalizedThunk(gpointer data,
GObject* object) {
static_cast<GObjectWeakRefDelegate*>(data)->OnFinalized(object);
}
void GObjectWeakRef::GObjectWeakRefDelegate::OnFinalized(GObject* object) {
DCHECK_EQ(object_, object);
object_ = NULL;
}
GObjectWeakRef::GObjectWeakRef(GObject* object) {
reset(object);
}
GObjectWeakRef::GObjectWeakRef(GtkWidget* widget) {
reset(G_OBJECT(widget));
}
GObjectWeakRef::GObjectWeakRef(const GObjectWeakRef& ref) : ref_(ref.ref_) {}
GObjectWeakRef::~GObjectWeakRef() {}
GObjectWeakRef& GObjectWeakRef::operator=(GObject* object) {
reset(object);
return *this;
}
GObjectWeakRef& GObjectWeakRef::operator=(GtkWidget* widget) {
reset(G_OBJECT(widget));
return *this;
}
GObjectWeakRef& GObjectWeakRef::operator=(const GObjectWeakRef& ref) {
ref_ = ref.ref_;
return *this;
}
GObject* GObjectWeakRef::get() const {
return ref_->get();
}
void GObjectWeakRef::reset(GObject* object) {
ref_ = new GObjectWeakRefDelegate(object);
}
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