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/*
* Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
* 1999 Lars Knoll <knoll@kde.org>
* 1999 Antti Koivisto <koivisto@kde.org>
* 2000 Simon Hausmann <hausmann@kde.org>
* 2000 Stefan Schimanski <1Stein@gmx.de>
* 2001 George Staikos <staikos@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
* Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2008 Eric Seidel <eric@webkit.org>
* Copyright (C) 2008 Google Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "core/frame/Frame.h"
#include "core/dom/DocumentType.h"
#include "core/events/Event.h"
#include "core/frame/LocalDOMWindow.h"
#include "core/frame/FrameDestructionObserver.h"
#include "core/frame/FrameHost.h"
#include "core/frame/Settings.h"
#include "core/html/HTMLFrameElementBase.h"
#include "core/inspector/InspectorInstrumentation.h"
#include "core/loader/EmptyClients.h"
#include "core/loader/FrameLoaderClient.h"
#include "core/page/Chrome.h"
#include "core/page/ChromeClient.h"
#include "core/page/EventHandler.h"
#include "core/page/FocusController.h"
#include "core/page/Page.h"
#include "core/rendering/RenderPart.h"
#include "public/platform/WebLayer.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/RefCountedLeakCounter.h"
namespace WebCore {
using namespace HTMLNames;
DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, frameCounter, ("Frame"));
Frame::Frame(FrameClient* client, FrameHost* host, FrameOwner* owner)
: m_treeNode(this)
, m_host(host)
, m_owner(owner)
, m_client(client)
, m_remotePlatformLayer(0)
{
ASSERT(page());
#ifndef NDEBUG
frameCounter.increment();
#endif
if (m_owner) {
page()->incrementSubframeCount();
if (m_owner->isLocal())
toHTMLFrameOwnerElement(m_owner)->setContentFrame(*this);
} else {
page()->setMainFrame(this);
}
}
Frame::~Frame()
{
disconnectOwnerElement();
setDOMWindow(nullptr);
// FIXME: We should not be doing all this work inside the destructor
#ifndef NDEBUG
frameCounter.decrement();
#endif
HashSet<FrameDestructionObserver*>::iterator stop = m_destructionObservers.end();
for (HashSet<FrameDestructionObserver*>::iterator it = m_destructionObservers.begin(); it != stop; ++it)
(*it)->frameDestroyed();
}
void Frame::addDestructionObserver(FrameDestructionObserver* observer)
{
m_destructionObservers.add(observer);
}
void Frame::removeDestructionObserver(FrameDestructionObserver* observer)
{
m_destructionObservers.remove(observer);
}
FrameHost* Frame::host() const
{
return m_host;
}
Page* Frame::page() const
{
if (m_host)
return &m_host->page();
return 0;
}
Settings* Frame::settings() const
{
if (m_host)
return &m_host->settings();
return 0;
}
void Frame::setDOMWindow(PassRefPtrWillBeRawPtr<LocalDOMWindow> domWindow)
{
if (m_domWindow)
m_domWindow->reset();
m_domWindow = domWindow;
}
static ChromeClient& emptyChromeClient()
{
DEFINE_STATIC_LOCAL(EmptyChromeClient, client, ());
return client;
}
ChromeClient& Frame::chromeClient() const
{
if (Page* page = this->page())
return page->chrome().client();
return emptyChromeClient();
}
RenderPart* Frame::ownerRenderer() const
{
if (!deprecatedLocalOwner())
return 0;
RenderObject* object = deprecatedLocalOwner()->renderer();
if (!object)
return 0;
// FIXME: If <object> is ever fixed to disassociate itself from frames
// that it has started but canceled, then this can turn into an ASSERT
// since ownerElement() would be 0 when the load is canceled.
// https://bugs.webkit.org/show_bug.cgi?id=18585
if (!object->isRenderPart())
return 0;
return toRenderPart(object);
}
void Frame::willDetachFrameHost()
{
HashSet<FrameDestructionObserver*>::iterator stop = m_destructionObservers.end();
for (HashSet<FrameDestructionObserver*>::iterator it = m_destructionObservers.begin(); it != stop; ++it)
(*it)->willDetachFrameHost();
// FIXME: Page should take care of updating focus/scrolling instead of Frame.
// FIXME: It's unclear as to why this is called more than once, but it is,
// so page() could be null.
if (page() && page()->focusController().focusedFrame() == this)
page()->focusController().setFocusedFrame(nullptr);
}
void Frame::detachFromFrameHost()
{
m_host = 0;
}
bool Frame::isMainFrame() const
{
Page* page = this->page();
return page && this == page->mainFrame();
}
void Frame::disconnectOwnerElement()
{
if (m_owner) {
if (m_owner->isLocal())
toHTMLFrameOwnerElement(m_owner)->clearContentFrame();
if (page())
page()->decrementSubframeCount();
}
m_owner = 0;
}
HTMLFrameOwnerElement* Frame::deprecatedLocalOwner() const
{
return m_owner && m_owner->isLocal() ? toHTMLFrameOwnerElement(m_owner) : 0;
}
} // namespace WebCore
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