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/*
* Copyright (C) 2010 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. ``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.
*/
#ifndef PendingScript_h
#define PendingScript_h
#include "CachedResourceClient.h"
#include "CachedResourceHandle.h"
#include <wtf/text/TextPosition.h>
#include <wtf/PassRefPtr.h>
namespace WebCore {
class CachedScript;
class Element;
// A container for an external script which may be loaded and executed.
//
// A CachedResourceHandle alone does not prevent the underlying CachedResource
// from purging its data buffer. This class holds a dummy client open for its
// lifetime in order to guarantee that the data buffer will not be purged.
class PendingScript : public CachedResourceClient {
public:
PendingScript()
: m_watchingForLoad(false)
, m_startingPosition(TextPosition1::belowRangePosition())
{
}
PendingScript(Element* element, CachedScript* cachedScript)
: m_watchingForLoad(false)
, m_element(element)
{
setCachedScript(cachedScript);
}
PendingScript(const PendingScript& other)
: CachedResourceClient(other)
, m_watchingForLoad(other.m_watchingForLoad)
, m_element(other.m_element)
, m_startingPosition(other.m_startingPosition)
{
setCachedScript(other.cachedScript());
}
~PendingScript();
PendingScript& operator=(const PendingScript& other)
{
if (this == &other)
return *this;
m_watchingForLoad = other.m_watchingForLoad;
m_element = other.m_element;
m_startingPosition = other.m_startingPosition;
setCachedScript(other.cachedScript());
return *this;
}
TextPosition1 startingPosition() const { return m_startingPosition; }
void setStartingPosition(const TextPosition1& position) { m_startingPosition = position; }
bool watchingForLoad() const { return m_watchingForLoad; }
void setWatchingForLoad(bool b) { m_watchingForLoad = b; }
Element* element() const { return m_element.get(); }
void setElement(Element* element) { m_element = element; }
PassRefPtr<Element> releaseElementAndClear();
CachedScript* cachedScript() const;
void setCachedScript(CachedScript*);
virtual void notifyFinished(CachedResource*);
private:
bool m_watchingForLoad;
RefPtr<Element> m_element;
TextPosition1 m_startingPosition; // Only used for inline script tags.
CachedResourceHandle<CachedScript> m_cachedScript;
};
}
#endif
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