1/* 2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "core/dom/PendingScript.h" 28 29#include "bindings/core/v8/ScriptSourceCode.h" 30#include "bindings/core/v8/ScriptStreamer.h" 31#include "core/dom/Element.h" 32#include "core/fetch/ScriptResource.h" 33 34namespace blink { 35 36PendingScript::~PendingScript() 37{ 38} 39 40void PendingScript::watchForLoad(ScriptResourceClient* client) 41{ 42 ASSERT(!m_watchingForLoad); 43 ASSERT(!isReady()); 44 if (m_streamer) { 45 m_streamer->addClient(client); 46 } else { 47 // addClient() will call notifyFinished() if the load is 48 // complete. Callers do not expect to be re-entered from this call, so 49 // they should not become a client of an already-loaded Resource. 50 resource()->addClient(client); 51 } 52 m_watchingForLoad = true; 53} 54 55void PendingScript::stopWatchingForLoad(ScriptResourceClient* client) 56{ 57 if (!m_watchingForLoad) 58 return; 59 ASSERT(resource()); 60 if (m_streamer) { 61 m_streamer->cancel(); 62 m_streamer->removeClient(client); 63 m_streamer.clear(); 64 } else { 65 resource()->removeClient(client); 66 } 67 m_watchingForLoad = false; 68} 69 70PassRefPtrWillBeRawPtr<Element> PendingScript::releaseElementAndClear() 71{ 72 setScriptResource(0); 73 m_watchingForLoad = false; 74 m_startingPosition = TextPosition::belowRangePosition(); 75 m_streamer.release(); 76 return m_element.release(); 77} 78 79void PendingScript::setScriptResource(ScriptResource* resource) 80{ 81 setResource(resource); 82} 83 84void PendingScript::notifyFinished(Resource* resource) 85{ 86 if (m_streamer) 87 m_streamer->notifyFinished(resource); 88} 89 90void PendingScript::notifyAppendData(ScriptResource* resource) 91{ 92 if (m_streamer) 93 m_streamer->notifyAppendData(resource); 94} 95 96void PendingScript::trace(Visitor* visitor) 97{ 98 visitor->trace(m_element); 99} 100 101ScriptSourceCode PendingScript::getSource(const KURL& documentURL, bool& errorOccurred) const 102{ 103 if (resource()) { 104 errorOccurred = resource()->errorOccurred(); 105 ASSERT(resource()->isLoaded()); 106 if (m_streamer && !m_streamer->streamingSuppressed()) 107 return ScriptSourceCode(m_streamer, resource()); 108 return ScriptSourceCode(resource()); 109 } 110 errorOccurred = false; 111 return ScriptSourceCode(m_element->textContent(), documentURL, startingPosition()); 112} 113 114bool PendingScript::isReady() const 115{ 116 if (resource() && !resource()->isLoaded()) 117 return false; 118 if (m_streamer && !m_streamer->isFinished()) 119 return false; 120 return true; 121} 122 123} 124