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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* (C) 2006 Alexey Proskuryakov (ap@webkit.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* 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.
*
*/
#ifndef DocumentStyleSheetCollection_h
#define DocumentStyleSheetCollection_h
#include <wtf/FastAllocBase.h>
#include <wtf/ListHashSet.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class CSSStyleSheet;
class Document;
class Node;
class StyleSheet;
class StyleSheetContents;
class StyleSheetList;
class DocumentStyleSheetCollection {
WTF_MAKE_FAST_ALLOCATED;
public:
static PassOwnPtr<DocumentStyleSheetCollection> create(Document* document) { return adoptPtr(new DocumentStyleSheetCollection(document)); }
~DocumentStyleSheetCollection();
const Vector<RefPtr<StyleSheet> >& styleSheetsForStyleSheetList() const { return m_styleSheetsForStyleSheetList; }
const Vector<RefPtr<CSSStyleSheet> >& activeAuthorStyleSheets() const { return m_activeAuthorStyleSheets; }
CSSStyleSheet* pageUserSheet();
const Vector<RefPtr<CSSStyleSheet> >& documentUserStyleSheets() const { return m_userStyleSheets; }
const Vector<RefPtr<CSSStyleSheet> >& documentAuthorStyleSheets() const { return m_authorStyleSheets; }
const Vector<RefPtr<CSSStyleSheet> >& injectedUserStyleSheets() const;
const Vector<RefPtr<CSSStyleSheet> >& injectedAuthorStyleSheets() const;
void addStyleSheetCandidateNode(Node*, bool createdByParser);
void removeStyleSheetCandidateNode(Node*);
void clearPageUserSheet();
void updatePageUserSheet();
void invalidateInjectedStyleSheetCache();
void updateInjectedStyleSheetCache() const;
void addAuthorSheet(PassRefPtr<StyleSheetContents> authorSheet);
void addUserSheet(PassRefPtr<StyleSheetContents> userSheet);
bool needsUpdateActiveStylesheetsOnStyleRecalc() const { return m_needsUpdateActiveStylesheetsOnStyleRecalc; }
enum UpdateFlag { FullUpdate, OptimizedUpdate };
bool updateActiveStyleSheets(UpdateFlag);
String preferredStylesheetSetName() const { return m_preferredStylesheetSetName; }
String selectedStylesheetSetName() const { return m_selectedStylesheetSetName; }
void setPreferredStylesheetSetName(const String& name) { m_preferredStylesheetSetName = name; }
void setSelectedStylesheetSetName(const String& name) { m_selectedStylesheetSetName = name; }
void addPendingSheet() { m_pendingStylesheets++; }
enum RemovePendingSheetNotificationType {
RemovePendingSheetNotifyImmediately,
RemovePendingSheetNotifyLater
};
void removePendingSheet(RemovePendingSheetNotificationType = RemovePendingSheetNotifyImmediately);
bool hasPendingSheets() const { return m_pendingStylesheets > 0; }
bool usesSiblingRules() const { return m_usesSiblingRules || m_usesSiblingRulesOverride; }
void setUsesSiblingRulesOverride(bool b) { m_usesSiblingRulesOverride = b; }
bool usesFirstLineRules() const { return m_usesFirstLineRules; }
bool usesFirstLetterRules() const { return m_usesFirstLetterRules; }
void setUsesFirstLetterRules(bool b) { m_usesFirstLetterRules = b; }
bool usesBeforeAfterRules() const { return m_usesBeforeAfterRules || m_usesBeforeAfterRulesOverride; }
void setUsesBeforeAfterRulesOverride(bool b) { m_usesBeforeAfterRulesOverride = b; }
bool usesRemUnits() const { return m_usesRemUnits; }
void setUsesRemUnit(bool b) { m_usesRemUnits = b; }
void combineCSSFeatureFlags();
void resetCSSFeatureFlags();
private:
DocumentStyleSheetCollection(Document*);
void collectActiveStyleSheets(Vector<RefPtr<StyleSheet> >&);
enum StyleResolverUpdateType {
Reconstruct,
Reset,
Additive
};
void analyzeStyleSheetChange(UpdateFlag, const Vector<RefPtr<CSSStyleSheet> >& newStylesheets, StyleResolverUpdateType&, bool& requiresFullStyleRecalc);
Document* m_document;
Vector<RefPtr<StyleSheet> > m_styleSheetsForStyleSheetList;
Vector<RefPtr<CSSStyleSheet> > m_activeAuthorStyleSheets;
// Track the number of currently loading top-level stylesheets needed for rendering.
// Sheets loaded using the @import directive are not included in this count.
// We use this count of pending sheets to detect when we can begin attaching
// elements and when it is safe to execute scripts.
int m_pendingStylesheets;
RefPtr<CSSStyleSheet> m_pageUserSheet;
mutable Vector<RefPtr<CSSStyleSheet> > m_injectedUserStyleSheets;
mutable Vector<RefPtr<CSSStyleSheet> > m_injectedAuthorStyleSheets;
mutable bool m_injectedStyleSheetCacheValid;
Vector<RefPtr<CSSStyleSheet> > m_userStyleSheets;
Vector<RefPtr<CSSStyleSheet> > m_authorStyleSheets;
bool m_hadActiveLoadingStylesheet;
bool m_needsUpdateActiveStylesheetsOnStyleRecalc;
typedef ListHashSet<Node*, 32> StyleSheetCandidateListHashSet;
StyleSheetCandidateListHashSet m_styleSheetCandidateNodes;
String m_preferredStylesheetSetName;
String m_selectedStylesheetSetName;
bool m_usesSiblingRules;
bool m_usesSiblingRulesOverride;
bool m_usesFirstLineRules;
bool m_usesFirstLetterRules;
bool m_usesBeforeAfterRules;
bool m_usesBeforeAfterRulesOverride;
bool m_usesRemUnits;
};
}
#endif
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