1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_UI_LIBGTK2UI_GCONF_LISTENER_H_ 6 #define CHROME_BROWSER_UI_LIBGTK2UI_GCONF_LISTENER_H_ 7 8 #include <gconf/gconf-client.h> 9 #include <gtk/gtk.h> 10 11 #include <set> 12 #include <string> 13 14 #include "base/basictypes.h" 15 #include "base/callback_forward.h" 16 #include "chrome/browser/ui/libgtk2ui/gtk2_signal.h" 17 18 namespace libgtk2ui { 19 class Gtk2UI; 20 21 // On GNOME desktops, subscribes to the gconf key which controlls button order. 22 // Everywhere else, SetTiltebarButtons() just calls back into BrowserTitlebar 23 // with the default ordering. 24 class GConfListener { 25 public: 26 // Sends data to the Gtk2UI when available. 27 explicit GConfListener(Gtk2UI* delegate); 28 ~GConfListener(); 29 30 private: 31 // Called whenever the metacity key changes. 32 CHROMEG_CALLBACK_2(GConfListener, void, OnChangeNotification, 33 GConfClient*, guint, GConfEntry*); 34 35 void GetAndRegister(const char* key_to_subscribe, 36 const base::Callback<void(GConfValue*)>& initial_setter); 37 38 // Checks |error|. On error, prints out a message and closes the connection 39 // to GConf and reverts to default mode. 40 bool HandleGError(GError* error, const char* key); 41 42 // Parses the return data structure from GConf, falling back to the default 43 // value on any error. 44 void ParseAndStoreButtonValue(GConfValue* gconf_value); 45 void ParseAndStoreMiddleClickValue(GConfValue* gconf_value); 46 47 Gtk2UI* delegate_; 48 49 // Pointer to our gconf context. NULL if we aren't on a desktop that uses 50 // gconf. 51 GConfClient* client_; 52 53 DISALLOW_COPY_AND_ASSIGN(GConfListener); 54 }; 55 56 } // namespace libgtk2ui 57 58 #endif // CHROME_BROWSER_UI_LIBGTK2UI_GCONF_LISTENER_H_ 59
