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1 // Copyright (c) 2010 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 "app/gtk_signal_registrar.h" | |
6 | |
7 #include <glib-object.h> | |
8 | |
9 #include "base/logging.h" | |
10 | |
11 GtkSignalRegistrar::GtkSignalRegistrar() { | |
12 } | |
13 | |
14 GtkSignalRegistrar::~GtkSignalRegistrar() { | |
15 for (HandlerMap::iterator list_iter = handler_lists_.begin(); | |
16 list_iter != handler_lists_.end(); ++list_iter) { | |
17 GObject* object = list_iter->first; | |
18 g_object_weak_unref(object, WeakNotifyThunk, this); | |
19 | |
20 HandlerList& handlers = list_iter->second; | |
21 for (HandlerList::iterator ids_iter = handlers.begin(); | |
22 ids_iter != handlers.end(); ids_iter++) { | |
23 g_signal_handler_disconnect(list_iter->first, *ids_iter); | |
24 } | |
25 } | |
26 } | |
27 | |
28 glong GtkSignalRegistrar::Connect(gpointer instance, | |
29 const gchar* detailed_signal, | |
30 GCallback signal_handler, | |
31 gpointer data) { | |
32 return ConnectInternal(instance, detailed_signal, signal_handler, data, | |
33 false); | |
34 } | |
35 | |
36 glong GtkSignalRegistrar::ConnectAfter(gpointer instance, | |
37 const gchar* detailed_signal, | |
38 GCallback signal_handler, | |
39 gpointer data) { | |
40 return ConnectInternal(instance, detailed_signal, signal_handler, data, true); | |
41 } | |
42 | |
43 glong GtkSignalRegistrar::ConnectInternal(gpointer instance, | |
44 const gchar* detailed_signal, | |
45 GCallback signal_handler, | |
46 gpointer data, | |
47 bool after) { | |
48 GObject* object = G_OBJECT(instance); | |
49 | |
50 HandlerMap::iterator iter = handler_lists_.find(object); | |
51 if (iter == handler_lists_.end()) { | |
52 g_object_weak_ref(object, WeakNotifyThunk, this); | |
53 handler_lists_[object] = HandlerList(); | |
54 iter = handler_lists_.find(object); | |
55 } | |
56 | |
57 glong handler_id = after ? | |
58 g_signal_connect_after(instance, detailed_signal, signal_handler, data) : | |
59 g_signal_connect(instance, detailed_signal, signal_handler, data); | |
60 iter->second.push_back(handler_id); | |
61 | |
62 return handler_id; | |
63 } | |
64 | |
65 void GtkSignalRegistrar::WeakNotify(GObject* where_the_object_was) { | |
66 HandlerMap::iterator iter = handler_lists_.find(where_the_object_was); | |
67 if (iter == handler_lists_.end()) { | |
68 NOTREACHED(); | |
69 return; | |
70 } | |
71 // The signal handlers will be disconnected automatically. Just erase the | |
72 // handler id list. | |
73 handler_lists_.erase(iter); | |
74 } | |
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