1/*
2 * Copyright (C) 2006, 2007 Rob Buis
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21#ifndef StyleElement_h
22#define StyleElement_h
23
24#include "core/css/CSSStyleSheet.h"
25#include "wtf/text/TextPosition.h"
26
27namespace blink {
28
29class ContainerNode;
30class Document;
31class Element;
32class TreeScope;
33
34class StyleElement : public WillBeGarbageCollectedMixin {
35public:
36    StyleElement(Document*, bool createdByParser);
37    virtual ~StyleElement();
38    virtual void trace(Visitor*);
39
40protected:
41    virtual const AtomicString& type() const = 0;
42    virtual const AtomicString& media() const = 0;
43
44    CSSStyleSheet* sheet() const { return m_sheet.get(); }
45
46    bool isLoading() const;
47    bool sheetLoaded(Document&);
48    void startLoadingDynamicSheet(Document&);
49
50    void processStyleSheet(Document&, Element*);
51    void removedFromDocument(Document&, Element*);
52    void removedFromDocument(Document&, Element*, ContainerNode* scopingNode, TreeScope&);
53    void clearDocumentData(Document&, Element*);
54    void childrenChanged(Element*);
55    void finishParsingChildren(Element*);
56
57    RefPtrWillBeMember<CSSStyleSheet> m_sheet;
58
59private:
60    void createSheet(Element*, const String& text = String());
61    void process(Element*);
62    void clearSheet(Element* ownerElement = 0);
63
64    bool m_createdByParser : 1;
65    bool m_loading : 1;
66    bool m_registeredAsCandidate : 1;
67    TextPosition m_startPosition;
68};
69
70}
71
72#endif
73