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/*
* Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
*
* 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.
*
*/
#ifndef ScriptElement_h
#define ScriptElement_h
#include "CachedResourceClient.h"
#include "CachedResourceHandle.h"
#include <wtf/text/TextPosition.h>
namespace WebCore {
class CachedScript;
class Element;
class ScriptElement;
class ScriptSourceCode;
class ScriptElement : private CachedResourceClient {
WTF_MAKE_FAST_ALLOCATED;
public:
ScriptElement(Element*, bool createdByParser, bool isEvaluated);
virtual ~ScriptElement();
Element* element() const { return m_element; }
enum LegacyTypeSupport { DisallowLegacyTypeInTypeAttribute, AllowLegacyTypeInTypeAttribute };
bool prepareScript(const TextPosition1& scriptStartPosition = TextPosition1::minimumPosition(), LegacyTypeSupport = DisallowLegacyTypeInTypeAttribute);
String scriptCharset() const { return m_characterEncoding; }
String scriptContent() const;
void executeScript(const ScriptSourceCode&);
void execute(CachedScript*);
// XML parser calls these
virtual void dispatchLoadEvent() = 0;
virtual void dispatchErrorEvent() = 0;
bool isScriptTypeSupported(LegacyTypeSupport) const;
bool haveFiredLoadEvent() const { return m_haveFiredLoad; }
bool willBeParserExecuted() const { return m_willBeParserExecuted; }
bool readyToBeParserExecuted() const { return m_readyToBeParserExecuted; }
bool willExecuteWhenDocumentFinishedParsing() const { return m_willExecuteWhenDocumentFinishedParsing; }
CachedResourceHandle<CachedScript> cachedScript() { return m_cachedScript; }
protected:
void setHaveFiredLoadEvent(bool haveFiredLoad) { m_haveFiredLoad = haveFiredLoad; }
bool isParserInserted() const { return m_parserInserted; }
bool alreadyStarted() const { return m_alreadyStarted; }
bool forceAsync() const { return m_forceAsync; }
// Helper functions used by our parent classes.
void insertedIntoDocument();
void removedFromDocument();
void childrenChanged();
void handleSourceAttribute(const String& sourceUrl);
void handleAsyncAttribute();
private:
bool ignoresLoadRequest() const;
bool isScriptForEventSupported() const;
bool requestScript(const String& sourceUrl);
void stopLoadRequest();
virtual void notifyFinished(CachedResource*);
virtual String sourceAttributeValue() const = 0;
virtual String charsetAttributeValue() const = 0;
virtual String typeAttributeValue() const = 0;
virtual String languageAttributeValue() const = 0;
virtual String forAttributeValue() const = 0;
virtual String eventAttributeValue() const = 0;
virtual bool asyncAttributeValue() const = 0;
virtual bool deferAttributeValue() const = 0;
virtual bool hasSourceAttribute() const = 0;
Element* m_element;
CachedResourceHandle<CachedScript> m_cachedScript;
bool m_parserInserted : 1;
bool m_isExternalScript : 1;
bool m_alreadyStarted : 1;
bool m_haveFiredLoad : 1;
bool m_willBeParserExecuted : 1; // Same as "The parser will handle executing the script."
bool m_readyToBeParserExecuted : 1;
bool m_willExecuteWhenDocumentFinishedParsing : 1;
bool m_forceAsync : 1;
bool m_willExecuteInOrder : 1;
String m_characterEncoding;
String m_fallbackCharacterEncoding;
};
ScriptElement* toScriptElement(Element*);
}
#endif
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