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| 1 /* | |
| 2 Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) | |
| 3 Copyright (C) 2001 Dirk Mueller (mueller@kde.org) | |
| 4 Copyright (C) 2002 Waldo Bastian (bastian@kde.org) | |
| 5 Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) | |
| 6 Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. | |
| 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 sheet
s and html | |
| 24 pages from the web. It has a memory cache for these objects. | |
| 25 */ | |
| 26 | |
| 27 #include "config.h" | |
| 28 #include "CachedCSSStyleSheet.h" | |
| 29 | |
| 30 #include "CachedResourceClient.h" | |
| 31 #include "CachedResourceClientWalker.h" | |
| 32 #include "TextResourceDecoder.h" | |
| 33 #include "loader.h" | |
| 34 #include <wtf/Vector.h> | |
| 35 | |
| 36 namespace WebCore { | |
| 37 | |
| 38 CachedCSSStyleSheet::CachedCSSStyleSheet(const String& url, const String& charse
t) | |
| 39 : CachedResource(url, CSSStyleSheet) | |
| 40 , m_decoder(TextResourceDecoder::create("text/css", charset)) | |
| 41 { | |
| 42 // Prefer text/css but accept any type (dell.com serves a stylesheet | |
| 43 // as text/html; see <http://bugs.webkit.org/show_bug.cgi?id=11451>). | |
| 44 setAccept("text/css,*/*;q=0.1"); | |
| 45 } | |
| 46 | |
| 47 CachedCSSStyleSheet::~CachedCSSStyleSheet() | |
| 48 { | |
| 49 } | |
| 50 | |
| 51 void CachedCSSStyleSheet::addClient(CachedResourceClient *c) | |
| 52 { | |
| 53 CachedResource::addClient(c); | |
| 54 | |
| 55 if (!m_loading) | |
| 56 c->setCSSStyleSheet(m_url, m_decoder->encoding().name(), this); | |
| 57 } | |
| 58 | |
| 59 void CachedCSSStyleSheet::setEncoding(const String& chs) | |
| 60 { | |
| 61 m_decoder->setEncoding(chs, TextResourceDecoder::EncodingFromHTTPHeader); | |
| 62 } | |
| 63 | |
| 64 String CachedCSSStyleSheet::encoding() const | |
| 65 { | |
| 66 return m_decoder->encoding().name(); | |
| 67 } | |
| 68 | |
| 69 void CachedCSSStyleSheet::data(PassRefPtr<SharedBuffer> data, bool allDataReceiv
ed) | |
| 70 { | |
| 71 if (!allDataReceived) | |
| 72 return; | |
| 73 | |
| 74 m_data = data; | |
| 75 setEncodedSize(m_data.get() ? m_data->size() : 0); | |
| 76 if (m_data.get()) { | |
| 77 m_sheet = m_decoder->decode(m_data->data(), encodedSize()); | |
| 78 m_sheet += m_decoder->flush(); | |
| 79 m_data = 0; // We no longer need the raw buffer. | |
| 80 } | |
| 81 m_loading = false; | |
| 82 checkNotify(); | |
| 83 } | |
| 84 | |
| 85 void CachedCSSStyleSheet::checkNotify() | |
| 86 { | |
| 87 if (m_loading) | |
| 88 return; | |
| 89 | |
| 90 CachedResourceClientWalker w(m_clients); | |
| 91 while (CachedResourceClient *c = w.next()) | |
| 92 c->setCSSStyleSheet(m_response.url().string(), m_decoder->encoding().nam
e(), this); | |
| 93 | |
| 94 #if USE(LOW_BANDWIDTH_DISPLAY) | |
| 95 // if checkNotify() is called from error(), client's setCSSStyleSheet(...) | |
| 96 // can't find "this" from url, so they can't do clean up if needed. | |
| 97 // call notifyFinished() to make sure they have a chance. | |
| 98 CachedResourceClientWalker n(m_clients); | |
| 99 while (CachedResourceClient* s = n.next()) | |
| 100 s->notifyFinished(this); | |
| 101 #endif | |
| 102 } | |
| 103 | |
| 104 void CachedCSSStyleSheet::error() | |
| 105 { | |
| 106 m_loading = false; | |
| 107 m_errorOccurred = true; | |
| 108 checkNotify(); | |
| 109 } | |
| 110 | |
| 111 bool CachedCSSStyleSheet::canUseSheet(bool enforceMIMEType) const | |
| 112 { | |
| 113 if (errorOccurred()) | |
| 114 return false; | |
| 115 | |
| 116 if (!enforceMIMEType) | |
| 117 return true; | |
| 118 | |
| 119 // This check exactly matches Firefox. | |
| 120 String mimeType = response().mimeType(); | |
| 121 return mimeType.isEmpty() || equalIgnoringCase(mimeType, "text/css") || equa
lIgnoringCase(mimeType, "application/x-unknown-content-type"); | |
| 122 } | |
| 123 | |
| 124 } | |
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