2 * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
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.
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.
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.
21 #ifndef ScriptLoader_h
22 #define ScriptLoader_h
24 #include "core/fetch/ResourceClient.h"
25 #include "core/fetch/ResourcePtr.h"
26 #include "wtf/text/TextPosition.h"
27 #include "wtf/text/WTFString.h"
33 class ScriptLoaderClient;
34 class ScriptSourceCode;
37 class ScriptLoader FINAL : private ResourceClient {
39 static PassOwnPtr<ScriptLoader> create(Element*, bool createdByParser, bool isEvaluated);
40 virtual ~ScriptLoader();
42 Element* element() const { return m_element; }
44 enum LegacyTypeSupport { DisallowLegacyTypeInTypeAttribute, AllowLegacyTypeInTypeAttribute };
45 bool prepareScript(const TextPosition& scriptStartPosition = TextPosition::minimumPosition(), LegacyTypeSupport = DisallowLegacyTypeInTypeAttribute);
47 String scriptCharset() const { return m_characterEncoding; }
48 String scriptContent() const;
49 void executeScript(const ScriptSourceCode&);
50 void execute(ScriptResource*);
52 // XML parser calls these
53 void dispatchLoadEvent();
54 void dispatchErrorEvent();
55 bool isScriptTypeSupported(LegacyTypeSupport) const;
57 bool haveFiredLoadEvent() const { return m_haveFiredLoad; }
58 bool willBeParserExecuted() const { return m_willBeParserExecuted; }
59 bool readyToBeParserExecuted() const { return m_readyToBeParserExecuted; }
60 bool willExecuteWhenDocumentFinishedParsing() const { return m_willExecuteWhenDocumentFinishedParsing; }
61 ResourcePtr<ScriptResource> resource() { return m_resource; }
63 void setHaveFiredLoadEvent(bool haveFiredLoad) { m_haveFiredLoad = haveFiredLoad; }
64 bool isParserInserted() const { return m_parserInserted; }
65 bool alreadyStarted() const { return m_alreadyStarted; }
66 bool forceAsync() const { return m_forceAsync; }
68 // Helper functions used by our parent classes.
69 void didNotifySubtreeInsertionsToDocument();
70 void childrenChanged();
71 void handleSourceAttribute(const String& sourceUrl);
72 void handleAsyncAttribute();
75 ScriptLoader(Element*, bool createdByParser, bool isEvaluated);
77 bool ignoresLoadRequest() const;
78 bool isScriptForEventSupported() const;
80 bool fetchScript(const String& sourceUrl);
81 void stopLoadRequest();
83 ScriptLoaderClient* client() const;
86 virtual void notifyFinished(Resource*) OVERRIDE;
88 // FIXME: Oilpan: This should become a Member once ResourceClient is moved to the heap.
90 ResourcePtr<ScriptResource> m_resource;
91 WTF::OrdinalNumber m_startLineNumber;
92 bool m_parserInserted : 1;
93 bool m_isExternalScript : 1;
94 bool m_alreadyStarted : 1;
95 bool m_haveFiredLoad : 1;
96 bool m_willBeParserExecuted : 1; // Same as "The parser will handle executing the script."
97 bool m_readyToBeParserExecuted : 1;
98 bool m_willExecuteWhenDocumentFinishedParsing : 1;
99 bool m_forceAsync : 1;
100 bool m_willExecuteInOrder : 1;
101 String m_characterEncoding;
102 String m_fallbackCharacterEncoding;
105 ScriptLoader* toScriptLoaderIfPossible(Element*);
107 inline PassOwnPtr<ScriptLoader> ScriptLoader::create(Element* element, bool createdByParser, bool isEvaluated)
109 return adoptPtr(new ScriptLoader(element, createdByParser, isEvaluated));