XSLStyleSheet.h revision 81bc750723a18f21cd17d1b173cd2a4dda9cea6e 
1/*
2 * This file is part of the XSL implementation.
3 *
4 * Copyright (C) 2004, 2006, 2008 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23#ifndef XSLStyleSheet_h
24#define XSLStyleSheet_h
25
26#if ENABLE(XSLT)
27
28#include "ProcessingInstruction.h"
29#include "StyleSheet.h"
30
31#if !USE(QXMLQUERY)
32#include <libxml/parser.h>
33#include <libxslt/transform.h>
34#endif
35
36#include <wtf/PassRefPtr.h>
37
38namespace WebCore {
39
40class XSLImportRule;
41
42class XSLStyleSheet : public StyleSheet {
43public:
44#if !USE(QXMLQUERY)
45    static PassRefPtr<XSLStyleSheet> create(XSLImportRule* parentImport, const String& originalURL, const KURL& finalURL)
46    {
47        return adoptRef(new XSLStyleSheet(parentImport, originalURL, finalURL));
48    }
49#endif
50    static PassRefPtr<XSLStyleSheet> create(ProcessingInstruction* parentNode, const String& originalURL, const KURL& finalURL)
51    {
52        return adoptRef(new XSLStyleSheet(parentNode, originalURL, finalURL, false));
53    }
54    static PassRefPtr<XSLStyleSheet> createEmbedded(ProcessingInstruction* parentNode, const KURL& finalURL)
55    {
56        return adoptRef(new XSLStyleSheet(parentNode, finalURL.string(), finalURL, true));
57    }
58
59    // Taking an arbitrary node is unsafe, because owner node pointer can become stale.
60    // XSLTProcessor ensures that the stylesheet doesn't outlive its parent, in part by not exposing it to JavaScript.
61    static PassRefPtr<XSLStyleSheet> createForXSLTProcessor(Node* parentNode, const String& originalURL, const KURL& finalURL)
62    {
63        return adoptRef(new XSLStyleSheet(parentNode, originalURL, finalURL, false));
64    }
65
66    static PassRefPtr<XSLStyleSheet> createForXMLTreeViewer(Node* node, const String& sheetString)
67    {
68        RefPtr<XSLStyleSheet> sheet = adoptRef(new XSLStyleSheet(node, String(), KURL(), false));
69        sheet->parseString(sheetString);
70
71        return sheet.release();
72    }
73
74    virtual ~XSLStyleSheet();
75
76    virtual bool isXSLStyleSheet() const { return true; }
77
78    virtual String type() const { return "text/xml"; }
79
80    virtual bool parseString(const String &string, bool strict = true);
81
82    virtual bool isLoading();
83    virtual void checkLoaded();
84
85    void loadChildSheets();
86    void loadChildSheet(const String& href);
87
88    CachedResourceLoader* cachedResourceLoader();
89
90    Document* ownerDocument();
91    XSLStyleSheet* parentStyleSheet() const { return m_parentStyleSheet; }
92    void setParentStyleSheet(XSLStyleSheet* parent);
93
94#if USE(QXMLQUERY)
95    String sheetString() const { return m_sheetString; }
96#else
97    xmlDocPtr document();
98    xsltStylesheetPtr compileStyleSheet();
99    xmlDocPtr locateStylesheetSubResource(xmlDocPtr parentDoc, const xmlChar* uri);
100#endif
101
102    void clearDocuments();
103
104    void markAsProcessed();
105    bool processed() const { return m_processed; }
106
107private:
108    XSLStyleSheet(Node* parentNode, const String& originalURL, const KURL& finalURL, bool embedded);
109#if !USE(QXMLQUERY)
110    XSLStyleSheet(XSLImportRule* parentImport, const String& originalURL, const KURL& finalURL);
111#endif
112
113    Document* m_ownerDocument;
114    bool m_embedded;
115    bool m_processed;
116
117#if USE(QXMLQUERY)
118    String m_sheetString;
119#else
120    xmlDocPtr m_stylesheetDoc;
121    bool m_stylesheetDocTaken;
122#endif
123
124    XSLStyleSheet* m_parentStyleSheet;
125};
126
127} // namespace WebCore
128
129#endif // ENABLE(XSLT)
130
131#endif // XSLStyleSheet_h
132