XSLStyleSheet.h revision 2fc2651226baac27029e38c9d6ef883fa32084db 
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    virtual ~XSLStyleSheet();
67
68    virtual bool isXSLStyleSheet() const { return true; }
69
70    virtual String type() const { return "text/xml"; }
71
72    virtual bool parseString(const String &string, bool strict = true);
73
74    virtual bool isLoading();
75    virtual void checkLoaded();
76
77    void loadChildSheets();
78    void loadChildSheet(const String& href);
79
80    CachedResourceLoader* cachedResourceLoader();
81
82    Document* ownerDocument();
83    XSLStyleSheet* parentStyleSheet() const { return m_parentStyleSheet; }
84    void setParentStyleSheet(XSLStyleSheet* parent);
85
86#if USE(QXMLQUERY)
87    String sheetString() const { return m_sheetString; }
88#else
89    xmlDocPtr document();
90    xsltStylesheetPtr compileStyleSheet();
91    xmlDocPtr locateStylesheetSubResource(xmlDocPtr parentDoc, const xmlChar* uri);
92#endif
93
94    void clearDocuments();
95
96    void markAsProcessed();
97    bool processed() const { return m_processed; }
98
99private:
100    XSLStyleSheet(Node* parentNode, const String& originalURL, const KURL& finalURL, bool embedded);
101#if !USE(QXMLQUERY)
102    XSLStyleSheet(XSLImportRule* parentImport, const String& originalURL, const KURL& finalURL);
103#endif
104
105    Document* m_ownerDocument;
106    bool m_embedded;
107    bool m_processed;
108
109#if USE(QXMLQUERY)
110    String m_sheetString;
111#else
112    xmlDocPtr m_stylesheetDoc;
113    bool m_stylesheetDocTaken;
114#endif
115
116    XSLStyleSheet* m_parentStyleSheet;
117};
118
119} // namespace WebCore
120
121#endif // ENABLE(XSLT)
122
123#endif // XSLStyleSheet_h
124