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/*
* Copyright (C) 2011 Google, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DOMWindowProperty.h"
#include "DOMWindow.h"
#include "Frame.h"
namespace WebCore {
DOMWindowProperty::DOMWindowProperty(Frame* frame)
: m_frame(frame)
, m_disconnectedDOMWindow(0)
{
if (m_frame)
m_frame->domWindow()->registerProperty(this);
}
DOMWindowProperty::~DOMWindowProperty()
{
if (m_frame) {
ASSERT(!m_disconnectedDOMWindow);
m_frame->domWindow()->unregisterProperty(this);
} else if (m_disconnectedDOMWindow)
m_disconnectedDOMWindow->unregisterProperty(this);
}
void DOMWindowProperty::disconnectFrameForPageCache()
{
ASSERT(m_frame);
ASSERT(!m_disconnectedDOMWindow);
m_disconnectedDOMWindow = m_frame->domWindow();
m_frame = 0;
}
void DOMWindowProperty::reconnectFrameFromPageCache(Frame* frame)
{
ASSERT(frame);
ASSERT(!m_frame);
ASSERT(m_disconnectedDOMWindow);
m_frame = frame;
m_disconnectedDOMWindow = 0;
}
void DOMWindowProperty::willDestroyGlobalObjectInCachedFrame()
{
ASSERT(m_disconnectedDOMWindow);
// DOMWindowProperty lifetime isn't tied directly to the DOMWindow itself so it is important
// that it unregister itself from any DOMWindow it is associated with.
m_disconnectedDOMWindow->unregisterProperty(this);
m_disconnectedDOMWindow = 0;
}
void DOMWindowProperty::willDestroyGlobalObjectInFrame()
{
ASSERT(m_frame);
ASSERT(!m_disconnectedDOMWindow);
// DOMWindowProperty lifetime isn't tied directly to the DOMWindow itself so it is important that it unregister
// itself from any DOMWindow it is associated with.
m_frame->domWindow()->unregisterProperty(this);
m_frame = 0;
}
void DOMWindowProperty::willDetachGlobalObjectFromFrame()
{
ASSERT(m_frame);
ASSERT(!m_disconnectedDOMWindow);
}
}
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