1 /* 2 Copyright (C) 1998 Lars Knoll (knoll (at) mpi-hd.mpg.de) 3 Copyright (C) 2001 Dirk Mueller (mueller (at) kde.org) 4 Copyright (C) 2002 Waldo Bastian (bastian (at) kde.org) 5 Copyright (C) 2006 Samuel Weinig (sam.weinig (at) gmail.com) 6 Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 7 8 This library is free software; you can redistribute it and/or 9 modify it under the terms of the GNU Library General Public 10 License as published by the Free Software Foundation; either 11 version 2 of the License, or (at your option) any later version. 12 13 This library is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 Library General Public License for more details. 17 18 You should have received a copy of the GNU Library General Public License 19 along with this library; see the file COPYING.LIB. If not, write to 20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 Boston, MA 02110-1301, USA. 22 23 This class provides all functionality needed for loading images, style sheets and html 24 pages from the web. It has a memory cache for these objects. 25 */ 26 27 #include "config.h" 28 #include "CachedScript.h" 29 30 #include "CachedResourceClient.h" 31 #include "CachedResourceClientWalker.h" 32 #include "TextResourceDecoder.h" 33 #include <wtf/Vector.h> 34 35 namespace WebCore { 36 37 CachedScript::CachedScript(const String& url, const String& charset) 38 : CachedResource(url, Script) 39 , m_decoder(TextResourceDecoder::create("application/javascript", charset)) 40 , m_decodedDataDeletionTimer(this, &CachedScript::decodedDataDeletionTimerFired) 41 { 42 // It's javascript we want. 43 // But some websites think their scripts are <some wrong mimetype here> 44 // and refuse to serve them if we only accept application/x-javascript. 45 setAccept("*/*"); 46 } 47 48 CachedScript::~CachedScript() 49 { 50 } 51 52 void CachedScript::didAddClient(CachedResourceClient* c) 53 { 54 if (!m_loading) 55 c->notifyFinished(this); 56 } 57 58 void CachedScript::allClientsRemoved() 59 { 60 m_decodedDataDeletionTimer.startOneShot(0); 61 } 62 63 void CachedScript::setEncoding(const String& chs) 64 { 65 m_decoder->setEncoding(chs, TextResourceDecoder::EncodingFromHTTPHeader); 66 } 67 68 String CachedScript::encoding() const 69 { 70 return m_decoder->encoding().name(); 71 } 72 73 const String& CachedScript::script() 74 { 75 ASSERT(!isPurgeable()); 76 77 if (!m_script && m_data) { 78 m_script = m_decoder->decode(m_data->data(), encodedSize()); 79 m_script += m_decoder->flush(); 80 setDecodedSize(m_script.length() * sizeof(UChar)); 81 } 82 83 m_decodedDataDeletionTimer.startOneShot(0); 84 return m_script; 85 } 86 87 void CachedScript::data(PassRefPtr<SharedBuffer> data, bool allDataReceived) 88 { 89 if (!allDataReceived) 90 return; 91 92 m_data = data; 93 setEncodedSize(m_data.get() ? m_data->size() : 0); 94 m_loading = false; 95 checkNotify(); 96 } 97 98 void CachedScript::checkNotify() 99 { 100 if (m_loading) 101 return; 102 103 CachedResourceClientWalker w(m_clients); 104 while (CachedResourceClient* c = w.next()) 105 c->notifyFinished(this); 106 } 107 108 void CachedScript::error() 109 { 110 m_loading = false; 111 m_errorOccurred = true; 112 checkNotify(); 113 } 114 115 void CachedScript::destroyDecodedData() 116 { 117 m_script = String(); 118 setDecodedSize(0); 119 if (isSafeToMakePurgeable()) 120 makePurgeable(true); 121 } 122 123 void CachedScript::decodedDataDeletionTimerFired(Timer<CachedScript>*) 124 { 125 destroyDecodedData(); 126 } 127 128 } // namespace WebCore 129