2 * Copyright (C) 2014 Google Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Neither the name of Google Inc. nor the names of its
11 * contributors may be used to endorse or promote products derived from
12 * this software without specific prior written permission.
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #ifndef DocumentStyleSheetCollector_h
28 #define DocumentStyleSheetCollector_h
30 #include "platform/heap/Handle.h"
31 #include "wtf/HashSet.h"
32 #include "wtf/RefPtr.h"
33 #include "wtf/Vector.h"
40 class StyleSheetCollection;
42 class DocumentStyleSheetCollector {
43 // This class contains references to two on-heap collections, therefore
44 // it's unhealthy to have it anywhere but on the stack, where stack
45 // scanning will keep them alive.
48 friend class ImportedDocumentStyleSheetCollector;
50 DocumentStyleSheetCollector(WillBeHeapVector<RefPtrWillBeMember<StyleSheet> >& sheetsForList, WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >& activeList, WillBeHeapHashSet<RawPtrWillBeMember<Document> >&);
51 ~DocumentStyleSheetCollector();
53 void appendActiveStyleSheets(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >&);
54 void appendActiveStyleSheet(CSSStyleSheet*);
55 void appendSheetForList(StyleSheet*);
57 bool hasVisited(Document* document) const { return m_visitedDocuments.contains(document); }
58 void willVisit(Document* document) { m_visitedDocuments.add(document); }
61 WillBeHeapVector<RefPtrWillBeMember<StyleSheet> >& m_styleSheetsForStyleSheetList;
62 WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >& m_activeAuthorStyleSheets;
63 WillBeHeapHashSet<RawPtrWillBeMember<Document> >& m_visitedDocuments;
66 class ActiveDocumentStyleSheetCollector FINAL : public DocumentStyleSheetCollector {
68 ActiveDocumentStyleSheetCollector(StyleSheetCollection&);
70 WillBeHeapHashSet<RawPtrWillBeMember<Document> > m_visitedDocuments;
73 class ImportedDocumentStyleSheetCollector FINAL : public DocumentStyleSheetCollector {
75 ImportedDocumentStyleSheetCollector(DocumentStyleSheetCollector&, WillBeHeapVector<RefPtrWillBeMember<StyleSheet> >&);
80 #endif // DocumentStyleSheetCollector_h