webengine/osswebengine/WebCore/loader/CachedCSSStyleSheet.cpp
changeset 0 dd21522fd290
child 13 10e98eab6f85
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/loader/CachedCSSStyleSheet.cpp	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,109 @@
+/*
+    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 "Cache.h"
+#include "CachedResourceClient.h"
+#include "CachedResourceClientWalker.h"
+#include "TextResourceDecoder.h"
+#include "DeprecatedString.h"
+#include "loader.h"
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+CachedCSSStyleSheet::CachedCSSStyleSheet(DocLoader* dl, const String& url, const String& charset, bool skipCanLoadCheck, bool sendResourceLoadCallbacks)
+    : CachedResource(url, CSSStyleSheet, true, sendResourceLoadCallbacks)
+    , m_decoder(new TextResourceDecoder("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");
+    cache()->loader()->load(dl, this, false, skipCanLoadCheck, sendResourceLoadCallbacks);
+    m_loading = true;
+}
+
+CachedCSSStyleSheet::~CachedCSSStyleSheet()
+{
+}
+
+void CachedCSSStyleSheet::ref(CachedResourceClient *c)
+{
+    CachedResource::ref(c);
+
+    if (!m_loading)
+        c->setCSSStyleSheet(m_url, m_decoder->encoding().name(), errorOccurred() ? "" : m_sheet);
+}
+
+void CachedCSSStyleSheet::setEncoding(const String& chs)
+{
+    m_decoder->setEncoding(chs, TextResourceDecoder::EncodingFromHTTPHeader);
+}
+
+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();
+    }
+    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().url(), m_decoder->encoding().name(), m_sheet);
+
+#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();
+}
+
+}