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| 1 /* | |
| 2 * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org> | |
| 3 * | |
| 4 * This library is free software; you can redistribute it and/or | |
| 5 * modify it under the terms of the GNU Library General Public | |
| 6 * License as published by the Free Software Foundation; either | |
| 7 * version 2 of the License, or (at your option) any later version. | |
| 8 * | |
| 9 * This library is distributed in the hope that it will be useful, | |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 * Library General Public License for more details. | |
| 13 * | |
| 14 * You should have received a copy of the GNU Library General Public License | |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 17 * Boston, MA 02110-1301, USA. | |
| 18 * | |
| 19 */ | |
| 20 | |
| 21 #ifndef ScriptElement_h | |
| 22 #define ScriptElement_h | |
| 23 | |
| 24 #include "core/loader/cache/CachedResourceClient.h" | |
| 25 #include "core/loader/cache/CachedResourceHandle.h" | |
| 26 #include <wtf/text/TextPosition.h> | |
| 27 #include <wtf/text/WTFString.h> | |
| 28 | |
| 29 namespace WebCore { | |
| 30 | |
| 31 class CachedScript; | |
| 32 class ContainerNode; | |
| 33 class Element; | |
| 34 class ScriptElement; | |
| 35 class ScriptSourceCode; | |
| 36 | |
| 37 class ScriptElementClient { | |
| 38 public: | |
| 39 virtual ~ScriptElementClient() { } | |
| 40 | |
| 41 virtual void dispatchLoadEvent() = 0; | |
| 42 | |
| 43 virtual String sourceAttributeValue() const = 0; | |
| 44 virtual String charsetAttributeValue() const = 0; | |
| 45 virtual String typeAttributeValue() const = 0; | |
| 46 virtual String languageAttributeValue() const = 0; | |
| 47 virtual String forAttributeValue() const = 0; | |
| 48 virtual String eventAttributeValue() const = 0; | |
| 49 virtual bool asyncAttributeValue() const = 0; | |
| 50 virtual bool deferAttributeValue() const = 0; | |
| 51 virtual bool hasSourceAttribute() const = 0; | |
| 52 }; | |
| 53 | |
| 54 class ScriptElement : private CachedResourceClient { | |
| 55 public: | |
| 56 static PassOwnPtr<ScriptElement> create(Element*, bool createdByParser, bool
isEvaluated); | |
| 57 virtual ~ScriptElement(); | |
| 58 | |
| 59 Element* element() const { return m_element; } | |
| 60 | |
| 61 enum LegacyTypeSupport { DisallowLegacyTypeInTypeAttribute, AllowLegacyTypeI
nTypeAttribute }; | |
| 62 bool prepareScript(const TextPosition& scriptStartPosition = TextPosition::m
inimumPosition(), LegacyTypeSupport = DisallowLegacyTypeInTypeAttribute); | |
| 63 | |
| 64 String scriptCharset() const { return m_characterEncoding; } | |
| 65 String scriptContent() const; | |
| 66 void executeScript(const ScriptSourceCode&); | |
| 67 void execute(CachedScript*); | |
| 68 | |
| 69 // XML parser calls these | |
| 70 void dispatchLoadEvent(); | |
| 71 void dispatchErrorEvent(); | |
| 72 bool isScriptTypeSupported(LegacyTypeSupport) const; | |
| 73 | |
| 74 bool haveFiredLoadEvent() const { return m_haveFiredLoad; } | |
| 75 bool willBeParserExecuted() const { return m_willBeParserExecuted; } | |
| 76 bool readyToBeParserExecuted() const { return m_readyToBeParserExecuted; } | |
| 77 bool willExecuteWhenDocumentFinishedParsing() const { return m_willExecuteWh
enDocumentFinishedParsing; } | |
| 78 CachedResourceHandle<CachedScript> cachedScript() { return m_cachedScript; } | |
| 79 | |
| 80 void setHaveFiredLoadEvent(bool haveFiredLoad) { m_haveFiredLoad = haveFired
Load; } | |
| 81 bool isParserInserted() const { return m_parserInserted; } | |
| 82 bool alreadyStarted() const { return m_alreadyStarted; } | |
| 83 bool forceAsync() const { return m_forceAsync; } | |
| 84 | |
| 85 // Helper functions used by our parent classes. | |
| 86 void insertedInto(ContainerNode*); | |
| 87 void childrenChanged(); | |
| 88 void handleSourceAttribute(const String& sourceUrl); | |
| 89 void handleAsyncAttribute(); | |
| 90 | |
| 91 private: | |
| 92 ScriptElement(Element*, bool createdByParser, bool isEvaluated); | |
| 93 | |
| 94 bool ignoresLoadRequest() const; | |
| 95 bool isScriptForEventSupported() const; | |
| 96 | |
| 97 bool requestScript(const String& sourceUrl); | |
| 98 void stopLoadRequest(); | |
| 99 | |
| 100 ScriptElementClient* client() const; | |
| 101 | |
| 102 // CachedResourceClient | |
| 103 virtual void notifyFinished(CachedResource*) OVERRIDE; | |
| 104 | |
| 105 Element* m_element; | |
| 106 CachedResourceHandle<CachedScript> m_cachedScript; | |
| 107 WTF::OrdinalNumber m_startLineNumber; | |
| 108 bool m_parserInserted : 1; | |
| 109 bool m_isExternalScript : 1; | |
| 110 bool m_alreadyStarted : 1; | |
| 111 bool m_haveFiredLoad : 1; | |
| 112 bool m_willBeParserExecuted : 1; // Same as "The parser will handle executin
g the script." | |
| 113 bool m_readyToBeParserExecuted : 1; | |
| 114 bool m_willExecuteWhenDocumentFinishedParsing : 1; | |
| 115 bool m_forceAsync : 1; | |
| 116 bool m_willExecuteInOrder : 1; | |
| 117 String m_characterEncoding; | |
| 118 String m_fallbackCharacterEncoding; | |
| 119 }; | |
| 120 | |
| 121 ScriptElement* toScriptElementIfPossible(Element*); | |
| 122 | |
| 123 inline PassOwnPtr<ScriptElement> ScriptElement::create(Element* element, bool cr
eatedByParser, bool isEvaluated) | |
| 124 { | |
| 125 return adoptPtr(new ScriptElement(element, createdByParser, isEvaluated)); | |
| 126 } | |
| 127 | |
| 128 } | |
| 129 | |
| 130 | |
| 131 #endif | |
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