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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2001 Dirk Mueller (mueller (at) kde.org)
      5  *           (C) 2006 Alexey Proskuryakov (ap (at) webkit.org)
      6  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
      7  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      8  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
      9  * Copyright (C) 2011 Google Inc. All rights reserved.
     10  *
     11  * This library is free software; you can redistribute it and/or
     12  * modify it under the terms of the GNU Library General Public
     13  * License as published by the Free Software Foundation; either
     14  * version 2 of the License, or (at your option) any later version.
     15  *
     16  * This library is distributed in the hope that it will be useful,
     17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     19  * Library General Public License for more details.
     20  *
     21  * You should have received a copy of the GNU Library General Public License
     22  * along with this library; see the file COPYING.LIB.  If not, write to
     23  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     24  * Boston, MA 02110-1301, USA.
     25  *
     26  */
     27 
     28 #ifndef StyleSheetCollection_h
     29 #define StyleSheetCollection_h
     30 
     31 #include "core/dom/Document.h"
     32 #include "core/dom/DocumentOrderedList.h"
     33 #include "core/dom/StyleSheetScopingNodeList.h"
     34 #include "core/dom/TreeScope.h"
     35 #include "wtf/FastAllocBase.h"
     36 #include "wtf/HashMap.h"
     37 #include "wtf/ListHashSet.h"
     38 #include "wtf/RefPtr.h"
     39 #include "wtf/Vector.h"
     40 #include "wtf/text/WTFString.h"
     41 
     42 namespace WebCore {
     43 
     44 class ContainerNode;
     45 class CSSStyleSheet;
     46 class DocumentStyleSheetCollection;
     47 class Node;
     48 class StyleSheet;
     49 class StyleSheetContents;
     50 class StyleSheetList;
     51 
     52 class StyleSheetCollection {
     53     WTF_MAKE_NONCOPYABLE(StyleSheetCollection); WTF_MAKE_FAST_ALLOCATED;
     54 public:
     55     explicit StyleSheetCollection(TreeScope*);
     56 
     57     void addStyleSheetCandidateNode(Node*, bool createdByParser);
     58     void removeStyleSheetCandidateNode(Node*, ContainerNode* scopingNode);
     59 
     60     Vector<RefPtr<CSSStyleSheet> >& activeAuthorStyleSheets() { return m_activeAuthorStyleSheets; }
     61     Vector<RefPtr<StyleSheet> >& styleSheetsForStyleSheetList() { return m_styleSheetsForStyleSheetList; }
     62     const Vector<RefPtr<CSSStyleSheet> >& activeAuthorStyleSheets() const { return m_activeAuthorStyleSheets; }
     63     const Vector<RefPtr<StyleSheet> >& styleSheetsForStyleSheetList() const { return m_styleSheetsForStyleSheetList; }
     64 
     65     DocumentOrderedList& styleSheetCandidateNodes() { return m_styleSheetCandidateNodes; }
     66     DocumentOrderedList* scopingNodesForStyleScoped() { return m_scopingNodesForStyleScoped.scopingNodes(); }
     67     ListHashSet<Node*, 4>* scopingNodesRemoved() { return m_scopingNodesForStyleScoped.scopingNodesRemoved(); }
     68 
     69     enum StyleResolverUpdateType {
     70         Reconstruct,
     71         Reset,
     72         Additive
     73     };
     74     bool updateActiveStyleSheets(DocumentStyleSheetCollection*, StyleResolverUpdateMode, StyleResolverUpdateType&);
     75 
     76 private:
     77     Document* document() { return m_treeScope->documentScope(); }
     78 
     79     void collectStyleSheets(DocumentStyleSheetCollection* collections, Vector<RefPtr<StyleSheet> >& styleSheets, Vector<RefPtr<CSSStyleSheet> >& activeSheets);
     80 
     81     StyleResolverUpdateType compareStyleSheets(const Vector<RefPtr<CSSStyleSheet> >& oldStyleSheets, const Vector<RefPtr<CSSStyleSheet> >& newStylesheets, Vector<StyleSheetContents*>& addedSheets);
     82     bool activeLoadingStyleSheetLoaded(const Vector<RefPtr<CSSStyleSheet> >& newStyleSheets);
     83 
     84     void analyzeStyleSheetChange(StyleResolverUpdateMode, const Vector<RefPtr<CSSStyleSheet> >& oldStyleSheets, const Vector<RefPtr<CSSStyleSheet> >& newStylesheets, StyleResolverUpdateType&, bool& requiresFullStyleRecalc);
     85 
     86     Vector<RefPtr<StyleSheet> > m_styleSheetsForStyleSheetList;
     87     Vector<RefPtr<CSSStyleSheet> > m_activeAuthorStyleSheets;
     88 
     89     TreeScope* m_treeScope;
     90     bool m_hadActiveLoadingStylesheet;
     91 
     92     DocumentOrderedList m_styleSheetCandidateNodes;
     93     StyleSheetScopingNodeList m_scopingNodesForStyleScoped;
     94 };
     95 
     96 }
     97 
     98 #endif
     99 
    100