Add support for XFWM titlebar buttons.

chrome/browser/ui/gtk/xfwm_titlebar_listener.h

Index: chrome/browser/ui/gtk/xfwm_titlebar_listener.h
===================================================================
--- chrome/browser/ui/gtk/xfwm_titlebar_listener.h	(revision 0)
+++ chrome/browser/ui/gtk/xfwm_titlebar_listener.h	(revision 0)
@@ -0,0 +1,71 @@
+// Copyright (c) 2012 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.
+
+#ifndef CHROME_BROWSER_UI_GTK_XFWM_TITLEBAR_LISTENER_H_
+#define CHROME_BROWSER_UI_GTK_XFWM_TITLEBAR_LISTENER_H_
+
+#include <string>
+
+#include "base/compiler_specific.h"
+#include "base/memory/weak_ptr.h"
+#include "base/synchronization/waitable_event.h"
+#include "chrome/browser/ui/gtk/titlebar_listener.h"
+
+namespace dbus {
+class Bus;
+class ObjectProxy;
+class Response;
+class Signal;
+}
+
+// On XFCE desktops, watch the XFWM config file for button order changes.
+class XfwmTitlebarListener : public TitlebarListener::Delegate {
+ public:
+  XfwmTitlebarListener();
+
+ private:
+  // Refcounted.
+  ~XfwmTitlebarListener();
+
+  // TitlebarListener::Delegate implementation.
+  virtual bool Init() OVERRIDE;
+  virtual std::string GetCurrentValue() OVERRIDE;
+
+  // Callback for the Xfconf "property changed" signal connection setup.
+  void OnPropertyChangedSignalConnected(const std::string& interface,
+                                        const std::string& signal,
+                                        bool succeeded);
+
+  // Called whenever a Xfconf property changes.
+  void OnPropertyChangedSignal(dbus::Signal* signal);
+
+  // Get the current button settings from Xfconf in a blocking manner on
+  // the FILE thread. On success, set |succeeded| to true and put the current
+  // settings in |result|. Otherwise set |succeeded| to false.
+  void GetCurrentButtonSettingOnFileThread(bool* succeeded,
+                                           std::string* result);
+
+  // DBus handle for communication with Xfconf.
+  scoped_refptr<dbus::Bus> session_bus_;
+
+  // Object proxy for Xfcont. We do not own this.
+  dbus::ObjectProxy* object_proxy_;
+
+  // An event used to make the UI thread wait during initialization until the
+  // current DBus setting has been retrieved.
+  base::WaitableEvent init_event_;
+
+  // The current button ordering in the Metacity button ordering format.
+  // It comes from Xfcont over DBus and gets converted to the Metacity format.
+  // Only accessed on the UI thread.
+  std::string current_value_;
+
+  // Note: This should remain the last member so it'll be destroyed and
+  // invalidate its weak pointers before any other members are destroyed.
+  base::WeakPtrFactory<XfwmTitlebarListener> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(XfwmTitlebarListener);
+};
+
+#endif  // CHROME_BROWSER_UI_GTK_XFWM_TITLEBAR_LISTENER_H_
Property changes on: chrome/browser/ui/gtk/xfwm_titlebar_listener.h
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Added: svn:eol-style
   + LF