1 // Copyright (c) 2011 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 #include "chrome/browser/ui/libgtk2ui/gtk2_signal_registrar.h"
6
7 #include <glib-object.h>
8
9 #include "base/logging.h"
10 #include "chrome/browser/ui/libgtk2ui/g_object_destructor_filo.h"
11
12 namespace libgtk2ui {
13
Gtk2SignalRegistrar()14 Gtk2SignalRegistrar::Gtk2SignalRegistrar() {
15 }
16
~Gtk2SignalRegistrar()17 Gtk2SignalRegistrar::~Gtk2SignalRegistrar() {
18 for (HandlerMap::iterator list_iter = handler_lists_.begin();
19 list_iter != handler_lists_.end(); ++list_iter) {
20 GObject* object = list_iter->first;
21 GObjectDestructorFILO::GetInstance()->Disconnect(
22 object, WeakNotifyThunk, this);
23
24 HandlerList& handlers = list_iter->second;
25 for (HandlerList::iterator ids_iter = handlers.begin();
26 ids_iter != handlers.end(); ++ids_iter) {
27 g_signal_handler_disconnect(object, *ids_iter);
28 }
29 }
30 }
31
Connect(gpointer instance,const gchar * detailed_signal,GCallback signal_handler,gpointer data)32 glong Gtk2SignalRegistrar::Connect(gpointer instance,
33 const gchar* detailed_signal,
34 GCallback signal_handler,
35 gpointer data) {
36 return ConnectInternal(instance, detailed_signal, signal_handler, data,
37 false);
38 }
39
ConnectAfter(gpointer instance,const gchar * detailed_signal,GCallback signal_handler,gpointer data)40 glong Gtk2SignalRegistrar::ConnectAfter(gpointer instance,
41 const gchar* detailed_signal,
42 GCallback signal_handler,
43 gpointer data) {
44 return ConnectInternal(instance, detailed_signal, signal_handler, data, true);
45 }
46
ConnectInternal(gpointer instance,const gchar * detailed_signal,GCallback signal_handler,gpointer data,bool after)47 glong Gtk2SignalRegistrar::ConnectInternal(gpointer instance,
48 const gchar* detailed_signal,
49 GCallback signal_handler,
50 gpointer data,
51 bool after) {
52 GObject* object = G_OBJECT(instance);
53
54 HandlerMap::iterator iter = handler_lists_.find(object);
55 if (iter == handler_lists_.end()) {
56 GObjectDestructorFILO::GetInstance()->Connect(
57 object, WeakNotifyThunk, this);
58 handler_lists_[object] = HandlerList();
59 iter = handler_lists_.find(object);
60 }
61
62 glong handler_id = after ?
63 g_signal_connect_after(instance, detailed_signal, signal_handler, data) :
64 g_signal_connect(instance, detailed_signal, signal_handler, data);
65 iter->second.push_back(handler_id);
66
67 return handler_id;
68 }
69
WeakNotify(GObject * where_the_object_was)70 void Gtk2SignalRegistrar::WeakNotify(GObject* where_the_object_was) {
71 HandlerMap::iterator iter = handler_lists_.find(where_the_object_was);
72 if (iter == handler_lists_.end()) {
73 NOTREACHED();
74 return;
75 }
76 // The signal handlers will be disconnected automatically. Just erase the
77 // handler id list.
78 handler_lists_.erase(iter);
79 }
80
DisconnectAll(gpointer instance)81 void Gtk2SignalRegistrar::DisconnectAll(gpointer instance) {
82 GObject* object = G_OBJECT(instance);
83 HandlerMap::iterator iter = handler_lists_.find(object);
84 if (iter == handler_lists_.end())
85 return;
86
87 GObjectDestructorFILO::GetInstance()->Disconnect(
88 object, WeakNotifyThunk, this);
89 HandlerList& handlers = iter->second;
90 for (HandlerList::iterator ids_iter = handlers.begin();
91 ids_iter != handlers.end(); ++ids_iter) {
92 g_signal_handler_disconnect(object, *ids_iter);
93 }
94
95 handler_lists_.erase(iter);
96 }
97
98 } // namespace libgtk2ui
99