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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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