/* * Copyright (C) 1999 Lars Knoll (knoll@kde.org) * (C) 1999 Antti Koivisto (koivisto@kde.org) * (C) 2001 Dirk Mueller (mueller@kde.org) * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. * Copyright (C) 2008 Nikolas Zimmermann * * 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. */ #include "config.h" #include "ScriptElement.h" #include "AsyncScriptRunner.h" #include "CachedScript.h" #include "CachedResourceLoader.h" #include "Document.h" #include "DocumentParser.h" #include "Frame.h" #include "FrameLoader.h" #include "HTMLNames.h" #include "HTMLScriptElement.h" #include "IgnoreDestructiveWriteCountIncrementer.h" #include "MIMETypeRegistry.h" #include "Page.h" #include "ScriptController.h" #include "ScriptSourceCode.h" #include "ScriptValue.h" #include "Settings.h" #include "Text.h" #include #include #if ENABLE(SVG) #include "SVGNames.h" #include "SVGScriptElement.h" #endif namespace WebCore { ScriptElement::ScriptElement(Element* element, bool createdByParser, bool isEvaluated) : m_element(element) , m_cachedScript(0) , m_createdByParser(createdByParser) , m_requested(false) , m_isEvaluated(isEvaluated) , m_firedLoad(false) { ASSERT(m_element); } ScriptElement::~ScriptElement() { stopLoadRequest(); } void ScriptElement::insertedIntoDocument(const String& sourceUrl) { if (createdByParser() && !isAsynchronous()) return; // http://www.whatwg.org/specs/web-apps/current-work/#script if (!sourceUrl.isEmpty()) { requestScript(sourceUrl); return; } // If there's an empty script node, we shouldn't evaluate the script // because if a script is inserted afterwards (by setting text or innerText) // it should be evaluated, and evaluateScript only evaluates a script once. evaluateScript(ScriptSourceCode(scriptContent(), element()->document()->url())); // FIXME: Provide a real starting line number here. } void ScriptElement::removedFromDocument() { // Eventually stop loading any not-yet-finished content stopLoadRequest(); } void ScriptElement::childrenChanged() { if (createdByParser()) return; // If a node is inserted as a child of the script element // and the script element has been inserted in the document // we evaluate the script. if (m_element->inDocument() && m_element->firstChild()) evaluateScript(ScriptSourceCode(scriptContent(), m_element->document()->url())); // FIXME: Provide a real starting line number here } void ScriptElement::finishParsingChildren(const String& sourceUrl) { // The parser just reached . If we have no src and no text, // allow dynamic loading later. if (sourceUrl.isEmpty() && scriptContent().isEmpty()) m_createdByParser = false; } void ScriptElement::handleSourceAttribute(const String& sourceUrl) { if (ignoresLoadRequest() || sourceUrl.isEmpty()) return; requestScript(sourceUrl); } // Helper function static bool isSupportedJavaScriptLanguage(const String& language) { typedef HashSet LanguageSet; DEFINE_STATIC_LOCAL(LanguageSet, languages, ()); if (languages.isEmpty()) { languages.add("javascript"); languages.add("javascript"); languages.add("javascript1.0"); languages.add("javascript1.1"); languages.add("javascript1.2"); languages.add("javascript1.3"); languages.add("javascript1.4"); languages.add("javascript1.5"); languages.add("javascript1.6"); languages.add("javascript1.7"); languages.add("livescript"); languages.add("ecmascript"); languages.add("jscript"); } return languages.contains(language); } void ScriptElement::requestScript(const String& sourceUrl) { Document* document = m_element->document(); // FIXME: Eventually we'd like to evaluate scripts which are inserted into a // viewless document but this'll do for now. // See http://bugs.webkit.org/show_bug.cgi?id=5727 if (!document->frame()) return; if (!m_element->dispatchBeforeLoadEvent(sourceUrl)) return; ASSERT(!m_cachedScript); m_cachedScript = document->cachedResourceLoader()->requestScript(sourceUrl, scriptCharset()); m_requested = true; // m_createdByParser is never reset - always resied at the initial value set while parsing. // m_evaluated is left untouched as well to avoid script reexecution, if a