15af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke/*
22bde8e466a4451c7319e3a072d118917957d6554Steve Block *  Copyright (C) 2010, 2011 Igalia S.L.
35af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *
45af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  This library is free software; you can redistribute it and/or
55af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  modify it under the terms of the GNU Lesser General Public
65af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  License as published by the Free Software Foundation; either
75af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  version 2 of the License, or (at your option) any later version.
85af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *
95af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  This library is distributed in the hope that it will be useful,
105af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  but WITHOUT ANY WARRANTY; without even the implied warranty of
115af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
125af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  Lesser General Public License for more details.
135af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *
145af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  You should have received a copy of the GNU Lesser General Public
155af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  License along with this library; if not, write to the Free Software
165af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
175af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke */
185af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke
195af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke#include "config.h"
205af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke#include "GObjectEventListener.h"
215af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke
225af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke#include "Event.h"
235af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke#include "EventListener.h"
24f486d19d62f1bc33246748b14b14a9dfa617b57fIain Merrick#include "webkit/WebKitDOMEvent.h"
255af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke#include "webkit/WebKitDOMEventPrivate.h"
2628040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu#include <glib-object.h>
2728040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu#include <glib.h>
285af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke#include <wtf/HashMap.h>
295af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke
305af96e2c7b73ebc627c6894727826a7576d31758Leon Clarkenamespace WebCore {
315af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke
322bde8e466a4451c7319e3a072d118917957d6554Steve Blocktypedef void (*GObjectEventListenerCallback)(GObject*, WebKitDOMEvent*, void*);
332bde8e466a4451c7319e3a072d118917957d6554Steve Block
342bde8e466a4451c7319e3a072d118917957d6554Steve BlockGObjectEventListener::GObjectEventListener(GObject* object, EventTarget* target, const char* domEventName, GCallback handler, bool capture, void* userData)
3528040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu    : EventListener(GObjectEventListenerType)
3628040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu    , m_object(object)
372bde8e466a4451c7319e3a072d118917957d6554Steve Block    , m_coreTarget(target)
3828040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu    , m_domEventName(domEventName)
392bde8e466a4451c7319e3a072d118917957d6554Steve Block    , m_handler(handler)
402bde8e466a4451c7319e3a072d118917957d6554Steve Block    , m_capture(capture)
412bde8e466a4451c7319e3a072d118917957d6554Steve Block    , m_userData(userData)
4228040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu{
432bde8e466a4451c7319e3a072d118917957d6554Steve Block    ASSERT(m_coreTarget);
4428040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu    g_object_weak_ref(object, reinterpret_cast<GWeakNotify>(GObjectEventListener::gobjectDestroyedCallback), this);
4528040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu}
4628040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu
4728040489d744e0c5d475a88663056c9040ed5320Teng-Hui ZhuGObjectEventListener::~GObjectEventListener()
4828040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu{
492bde8e466a4451c7319e3a072d118917957d6554Steve Block    if (!m_coreTarget)
5028040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu        return;
5128040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu    g_object_weak_unref(m_object, reinterpret_cast<GWeakNotify>(GObjectEventListener::gobjectDestroyedCallback), this);
5228040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu}
5328040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu
5428040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhuvoid GObjectEventListener::gobjectDestroyed()
5528040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu{
562bde8e466a4451c7319e3a072d118917957d6554Steve Block    ASSERT(m_coreTarget);
5728040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu
582bde8e466a4451c7319e3a072d118917957d6554Steve Block    // We must set m_coreTarget to null, because removeEventListener
592bde8e466a4451c7319e3a072d118917957d6554Steve Block    // may call the destructor as a side effect and we must be in the
602bde8e466a4451c7319e3a072d118917957d6554Steve Block    // proper state to prevent g_object_weak_unref.
612bde8e466a4451c7319e3a072d118917957d6554Steve Block    EventTarget* target = m_coreTarget;
622bde8e466a4451c7319e3a072d118917957d6554Steve Block    m_coreTarget = 0;
632bde8e466a4451c7319e3a072d118917957d6554Steve Block    target->removeEventListener(m_domEventName.data(), this, m_capture);
6428040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu}
6528040489d744e0c5d475a88663056c9040ed5320Teng-Hui Zhu
665af96e2c7b73ebc627c6894727826a7576d31758Leon Clarkevoid GObjectEventListener::handleEvent(ScriptExecutionContext*, Event* event)
675af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke{
68f486d19d62f1bc33246748b14b14a9dfa617b57fIain Merrick    WebKitDOMEvent* gobjectEvent = WEBKIT_DOM_EVENT(WebKit::kit(event));
692bde8e466a4451c7319e3a072d118917957d6554Steve Block    reinterpret_cast<GObjectEventListenerCallback>(m_handler)(m_object, gobjectEvent, m_userData);
704576aa36e9a9671459299c7963ac95aa94beaea9Shimeng (Simon) Wang    g_object_unref(gobjectEvent);
715af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke}
725af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke
735af96e2c7b73ebc627c6894727826a7576d31758Leon Clarkebool GObjectEventListener::operator==(const EventListener& listener)
745af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke{
755af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke    if (const GObjectEventListener* gobjectEventListener = GObjectEventListener::cast(&listener))
762bde8e466a4451c7319e3a072d118917957d6554Steve Block        return m_object == gobjectEventListener->m_object && m_handler == gobjectEventListener->m_handler;
775af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke
785af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke    return false;
795af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke}
805af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke
815af96e2c7b73ebc627c6894727826a7576d31758Leon Clarke}
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