| /* |
| * Copyright (C) 2010, 2011 Igalia S.L. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| #include "GObjectEventListener.h" |
| |
| #include "WebKitDOMEvent.h" |
| #include "WebKitDOMEventPrivate.h" |
| #include "WebKitDOMEventTarget.h" |
| #include <WebCore/Event.h> |
| #include <wtf/HashMap.h> |
| |
| using namespace WebCore; |
| |
| namespace WebKit { |
| |
| GObjectEventListener::GObjectEventListener(GObject* target, EventTarget* coreTarget, const char* domEventName, GClosure* handler, bool capture) |
| : EventListener(GObjectEventListenerType) |
| , m_target(target) |
| , m_coreTarget(coreTarget) |
| , m_domEventName(domEventName) |
| , m_handler(handler) |
| , m_capture(capture) |
| { |
| ASSERT(m_coreTarget); |
| if (G_CLOSURE_NEEDS_MARSHAL(m_handler.get())) |
| g_closure_set_marshal(m_handler.get(), g_cclosure_marshal_generic); |
| g_object_weak_ref(m_target, reinterpret_cast<GWeakNotify>(GObjectEventListener::gobjectDestroyedCallback), this); |
| } |
| |
| GObjectEventListener::~GObjectEventListener() |
| { |
| if (!m_coreTarget) |
| return; |
| g_object_weak_unref(m_target, reinterpret_cast<GWeakNotify>(GObjectEventListener::gobjectDestroyedCallback), this); |
| } |
| |
| void GObjectEventListener::gobjectDestroyed() |
| { |
| ASSERT(m_coreTarget); |
| |
| // Protect 'this' class in case the 'm_coreTarget' holds the last reference, |
| // which may cause, inside removeEventListener(), free of this object |
| // and later use-after-free with the m_handler = 0; assignment. |
| RefPtr<GObjectEventListener> protectedThis(this); |
| |
| m_coreTarget->removeEventListener(m_domEventName.data(), *this, m_capture); |
| m_coreTarget = nullptr; |
| m_handler = nullptr; |
| } |
| |
| void GObjectEventListener::handleEvent(ScriptExecutionContext&, Event& event) |
| { |
| G_GNUC_BEGIN_IGNORE_DEPRECATIONS; |
| GValue parameters[2] = { G_VALUE_INIT, G_VALUE_INIT }; |
| g_value_init(¶meters[0], WEBKIT_DOM_TYPE_EVENT_TARGET); |
| g_value_set_object(¶meters[0], m_target); |
| |
| GRefPtr<WebKitDOMEvent> domEvent = adoptGRef(WebKit::kit(&event)); |
| g_value_init(¶meters[1], WEBKIT_DOM_TYPE_EVENT); |
| g_value_set_object(¶meters[1], domEvent.get()); |
| |
| g_closure_invoke(m_handler.get(), 0, 2, parameters, NULL); |
| g_value_unset(parameters + 0); |
| g_value_unset(parameters + 1); |
| G_GNUC_END_IGNORE_DEPRECATIONS; |
| } |
| |
| bool GObjectEventListener::operator==(const EventListener& listener) const |
| { |
| if (const GObjectEventListener* gobjectEventListener = GObjectEventListener::cast(&listener)) |
| return m_target == gobjectEventListener->m_target |
| && reinterpret_cast<GCClosure*>(m_handler.get())->callback == reinterpret_cast<GCClosure*>(gobjectEventListener->m_handler.get())->callback; |
| |
| return false; |
| } |
| |
| } // namespace WebKit |