| /* |
| Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) |
| Copyright (C) 2001 Dirk Mueller (mueller@kde.org) |
| Copyright (C) 2002 Waldo Bastian (bastian@kde.org) |
| Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) |
| Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. |
| |
| 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. |
| |
| This class provides all functionality needed for loading images, style sheets and html |
| pages from the web. It has a memory cache for these objects. |
| */ |
| |
| #include "config.h" |
| #include "CachedCSSStyleSheet.h" |
| |
| #include "CachedResourceClient.h" |
| #include "CachedResourceClientWalker.h" |
| #include "TextResourceDecoder.h" |
| #include "loader.h" |
| #include <wtf/Vector.h> |
| |
| namespace WebCore { |
| |
| CachedCSSStyleSheet::CachedCSSStyleSheet(const String& url, const String& charset) |
| : CachedResource(url, CSSStyleSheet) |
| , m_decoder(TextResourceDecoder::create("text/css", charset)) |
| { |
| // Prefer text/css but accept any type (dell.com serves a stylesheet |
| // as text/html; see <http://bugs.webkit.org/show_bug.cgi?id=11451>). |
| setAccept("text/css,*/*;q=0.1"); |
| } |
| |
| CachedCSSStyleSheet::~CachedCSSStyleSheet() |
| { |
| } |
| |
| void CachedCSSStyleSheet::addClient(CachedResourceClient *c) |
| { |
| CachedResource::addClient(c); |
| |
| if (!m_loading) |
| c->setCSSStyleSheet(m_url, m_decoder->encoding().name(), this); |
| } |
| |
| void CachedCSSStyleSheet::setEncoding(const String& chs) |
| { |
| m_decoder->setEncoding(chs, TextResourceDecoder::EncodingFromHTTPHeader); |
| } |
| |
| String CachedCSSStyleSheet::encoding() const |
| { |
| return m_decoder->encoding().name(); |
| } |
| |
| void CachedCSSStyleSheet::data(PassRefPtr<SharedBuffer> data, bool allDataReceived) |
| { |
| if (!allDataReceived) |
| return; |
| |
| m_data = data; |
| setEncodedSize(m_data.get() ? m_data->size() : 0); |
| if (m_data.get()) { |
| m_sheet = m_decoder->decode(m_data->data(), encodedSize()); |
| m_sheet += m_decoder->flush(); |
| #ifdef ANDROID_FIX // FIXME Newer webkit makes decode temporary; remove on webkit update |
| // report decoded size too |
| setDecodedSize(m_sheet.length() * sizeof(UChar)); |
| #endif |
| } |
| m_loading = false; |
| checkNotify(); |
| } |
| |
| void CachedCSSStyleSheet::checkNotify() |
| { |
| if (m_loading) |
| return; |
| |
| CachedResourceClientWalker w(m_clients); |
| while (CachedResourceClient *c = w.next()) |
| c->setCSSStyleSheet(m_response.url().string(), m_decoder->encoding().name(), this); |
| |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| // if checkNotify() is called from error(), client's setCSSStyleSheet(...) |
| // can't find "this" from url, so they can't do clean up if needed. |
| // call notifyFinished() to make sure they have a chance. |
| CachedResourceClientWalker n(m_clients); |
| while (CachedResourceClient* s = n.next()) |
| s->notifyFinished(this); |
| #endif |
| } |
| |
| void CachedCSSStyleSheet::error() |
| { |
| m_loading = false; |
| m_errorOccurred = true; |
| checkNotify(); |
| } |
| |
| bool CachedCSSStyleSheet::canUseSheet(bool enforceMIMEType) const |
| { |
| if (errorOccurred()) |
| return false; |
| |
| if (!enforceMIMEType) |
| return true; |
| |
| // This check exactly matches Firefox. |
| String mimeType = response().mimeType(); |
| return mimeType.isEmpty() || equalIgnoringCase(mimeType, "text/css") || equalIgnoringCase(mimeType, "application/x-unknown-content-type"); |
| } |
| |
| } |