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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 APPLE INC. AND ITS CONTRIBUTORS ``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 ITS 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 "MediaStreamFrameController.h"
#if ENABLE(MEDIA_STREAM)
#include "DOMWindow.h"
#include "Document.h"
#include "Frame.h"
#include "MediaStreamController.h"
#include "NavigatorUserMediaErrorCallback.h"
#include "NavigatorUserMediaSuccessCallback.h"
#include "Page.h"
#include "SecurityOrigin.h"
#include <wtf/RefCounted.h>
namespace WebCore {
class MediaStreamFrameController::Request : public RefCounted<Request> {
public:
Request(ScriptExecutionContext* scriptExecutionContext)
: m_scriptExecutionContext(scriptExecutionContext) { }
virtual ~Request() { }
ScriptExecutionContext* scriptExecutionContext() const { return m_scriptExecutionContext; }
virtual bool isGenerateStreamRequest() const { return false; }
virtual bool isRecordedDataRequest() const { return false; }
virtual void abort() = 0;
private:
// This is guaranteed to have the lifetime of the Frame, and it's only used to make
// the callback asynchronous. The original callback context is used in the call.
ScriptExecutionContext* m_scriptExecutionContext;
};
void MediaStreamFrameController::RequestMap::abort(int requestId)
{
get(requestId)->abort();
remove(requestId);
}
void MediaStreamFrameController::RequestMap::abortAll()
{
while (!isEmpty()) {
begin()->second->abort();
remove(begin());
}
}
MediaStreamFrameController::MediaStreamFrameController(Frame* frame)
: m_frame(frame)
, m_isInDetachedState(false)
{
}
MediaStreamFrameController::~MediaStreamFrameController()
{
}
SecurityOrigin* MediaStreamFrameController::securityOrigin() const
{
return m_frame ? m_frame->existingDOMWindow()->securityOrigin() : 0;
}
ScriptExecutionContext* MediaStreamFrameController::scriptExecutionContext() const
{
return m_frame ? m_frame->existingDOMWindow()->scriptExecutionContext() : 0;
}
MediaStreamController* MediaStreamFrameController::pageController() const
{
return !m_isInDetachedState && m_frame && m_frame->page() ? m_frame->page()->mediaStreamController() : 0;
}
void MediaStreamFrameController::enterDetachedState()
{
if (m_isInDetachedState) {
ASSERT(m_requests.isEmpty());
return;
}
m_requests.abortAll();
m_isInDetachedState = true;
}
// Called also when the frame is detached from the page, in which case the page controller will remain alive.
void MediaStreamFrameController::disconnectPage()
{
if (pageController())
pageController()->unregisterFrameController(this);
enterDetachedState();
}
// Called when the frame is being destroyed. Since the frame controller is owned by the frame it will die shortly after this.
void MediaStreamFrameController::disconnectFrame()
{
disconnectPage();
ASSERT(m_requests.isEmpty());
m_frame = 0;
}
void MediaStreamFrameController::transferToNewPage(Page*)
{
// FIXME: In the future we should keep running the media stream services while transfering frames between pages.
// However, until a proper way to do this is decided, we're shutting down services.
disconnectPage();
}
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM)
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