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/*
* Copyright (C) 2011 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDER "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 THE COPYRIGHT HOLDER 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.
*/
#ifndef WebKitNamedFlow_h
#define WebKitNamedFlow_h
#include "EventTarget.h"
#include <wtf/ListHashSet.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/text/AtomicString.h>
namespace WebCore {
class Document;
class Node;
class NodeList;
class RenderNamedFlowThread;
class ScriptExecutionContext;
class WebKitNamedFlowCollection;
class WebKitNamedFlow : public RefCounted<WebKitNamedFlow>, public EventTarget {
public:
static PassRefPtr<WebKitNamedFlow> create(PassRefPtr<WebKitNamedFlowCollection> manager, const AtomicString& flowThreadName);
~WebKitNamedFlow();
const AtomicString& name() const;
bool overset() const;
int firstEmptyRegionIndex() const;
PassRefPtr<NodeList> getRegionsByContent(Node*);
PassRefPtr<NodeList> getRegions();
PassRefPtr<NodeList> getContent();
using RefCounted<WebKitNamedFlow>::ref;
using RefCounted<WebKitNamedFlow>::deref;
virtual const AtomicString& interfaceName() const;
virtual ScriptExecutionContext* scriptExecutionContext() const;
// This function is called from the JS binding code to determine if the NamedFlow object is reachable or not.
// If the object has listeners, the object should only be discarded if the parent Document is not reachable.
Node* base() const;
void setRenderer(RenderNamedFlowThread* parentFlowThread);
enum FlowState {
FlowStateCreated,
FlowStateNull
};
FlowState flowState() const { return m_parentFlowThread ? FlowStateCreated : FlowStateNull; }
void dispatchRegionLayoutUpdateEvent();
private:
WebKitNamedFlow(PassRefPtr<WebKitNamedFlowCollection>, const AtomicString&);
// EventTarget implementation.
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual EventTargetData* eventTargetData() OVERRIDE;
virtual EventTargetData* ensureEventTargetData() OVERRIDE;
// The name of the flow thread as specified in CSS.
AtomicString m_flowThreadName;
RefPtr<WebKitNamedFlowCollection> m_flowManager;
RenderNamedFlowThread* m_parentFlowThread;
EventTargetData m_eventTargetData;
};
}
#endif
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