1/*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "core/dom/DocumentMarker.h"
33
34namespace WebCore {
35
36DocumentMarkerDetails::~DocumentMarkerDetails()
37{
38}
39
40class DocumentMarkerDescription : public DocumentMarkerDetails {
41public:
42    static PassRefPtr<DocumentMarkerDescription> create(const String&);
43
44    const String& description() const { return m_description; }
45    virtual bool isDescription() const { return true; }
46
47private:
48    DocumentMarkerDescription(const String& description)
49        : m_description(description)
50    {
51    }
52
53    String m_description;
54};
55
56PassRefPtr<DocumentMarkerDescription> DocumentMarkerDescription::create(const String& description)
57{
58    return adoptRef(new DocumentMarkerDescription(description));
59}
60
61inline DocumentMarkerDescription* toDocumentMarkerDescription(DocumentMarkerDetails* details)
62{
63    if (details && details->isDescription())
64        return static_cast<DocumentMarkerDescription*>(details);
65    return 0;
66}
67
68
69class DocumentMarkerTextMatch : public DocumentMarkerDetails {
70public:
71    static PassRefPtr<DocumentMarkerTextMatch> instanceFor(bool);
72
73    bool activeMatch() const { return m_match; }
74    virtual bool isTextMatch() const { return true; }
75
76private:
77    explicit DocumentMarkerTextMatch(bool match)
78        : m_match(match)
79    {
80    }
81
82    bool m_match;
83};
84
85PassRefPtr<DocumentMarkerTextMatch> DocumentMarkerTextMatch::instanceFor(bool match)
86{
87    DEFINE_STATIC_LOCAL(RefPtr<DocumentMarkerTextMatch>, trueInstance, (adoptRef(new DocumentMarkerTextMatch(true))));
88    DEFINE_STATIC_LOCAL(RefPtr<DocumentMarkerTextMatch>, falseInstance, (adoptRef(new DocumentMarkerTextMatch(false))));
89    return match ? trueInstance : falseInstance;
90}
91
92inline DocumentMarkerTextMatch* toDocumentMarkerTextMatch(DocumentMarkerDetails* details)
93{
94    if (details && details->isTextMatch())
95        return static_cast<DocumentMarkerTextMatch*>(details);
96    return 0;
97}
98
99
100DocumentMarker::DocumentMarker()
101    : m_type(Spelling)
102    , m_startOffset(0)
103    , m_endOffset(0)
104    , m_hash(0)
105{
106}
107
108DocumentMarker::DocumentMarker(MarkerType type, unsigned startOffset, unsigned endOffset)
109    : m_type(type)
110    , m_startOffset(startOffset)
111    , m_endOffset(endOffset)
112    , m_hash(0)
113{
114}
115
116DocumentMarker::DocumentMarker(MarkerType type, unsigned startOffset, unsigned endOffset, const String& description)
117    : m_type(type)
118    , m_startOffset(startOffset)
119    , m_endOffset(endOffset)
120    , m_details(description.isEmpty() ? 0 : DocumentMarkerDescription::create(description))
121    , m_hash(0)
122{
123}
124
125DocumentMarker::DocumentMarker(MarkerType type, unsigned startOffset, unsigned endOffset, const String& description, uint32_t hash)
126    : m_type(type)
127    , m_startOffset(startOffset)
128    , m_endOffset(endOffset)
129    , m_details(description.isEmpty() ? 0 : DocumentMarkerDescription::create(description))
130    , m_hash(hash)
131{
132}
133
134DocumentMarker::DocumentMarker(unsigned startOffset, unsigned endOffset, bool activeMatch)
135    : m_type(DocumentMarker::TextMatch)
136    , m_startOffset(startOffset)
137    , m_endOffset(endOffset)
138    , m_details(DocumentMarkerTextMatch::instanceFor(activeMatch))
139    , m_hash(0)
140{
141}
142
143DocumentMarker::DocumentMarker(MarkerType type, unsigned startOffset, unsigned endOffset, PassRefPtr<DocumentMarkerDetails> details)
144    : m_type(type)
145    , m_startOffset(startOffset)
146    , m_endOffset(endOffset)
147    , m_details(details)
148    , m_hash(0)
149{
150}
151
152void DocumentMarker::shiftOffsets(int delta)
153{
154    m_startOffset += delta;
155    m_endOffset +=  delta;
156}
157
158void DocumentMarker::setActiveMatch(bool active)
159{
160    m_details = DocumentMarkerTextMatch::instanceFor(active);
161}
162
163const String& DocumentMarker::description() const
164{
165    if (DocumentMarkerDescription* details = toDocumentMarkerDescription(m_details.get()))
166        return details->description();
167    return emptyString();
168}
169
170bool DocumentMarker::activeMatch() const
171{
172    if (DocumentMarkerTextMatch* details = toDocumentMarkerTextMatch(m_details.get()))
173        return details->activeMatch();
174    return false;
175}
176
177} // namespace WebCore
178