1/*
2 * Copyright (C) 2006, 2007, 2008 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef PlainTextRange_h
27#define PlainTextRange_h
28
29#include "platform/heap/Handle.h"
30#include "wtf/NotFound.h"
31#include "wtf/PassRefPtr.h"
32
33namespace blink {
34
35class ContainerNode;
36class Range;
37
38class PlainTextRange {
39public:
40    PlainTextRange();
41    PlainTextRange(const PlainTextRange&);
42    explicit PlainTextRange(int location);
43    PlainTextRange(int start, int end);
44
45    size_t end() const { ASSERT(!isNull()); return m_end; }
46    size_t start() const { ASSERT(!isNull()); return m_start; }
47    bool isNull() const { return m_start == kNotFound; }
48    bool isNotNull() const { return m_start != kNotFound; }
49    size_t length() const { ASSERT(!isNull()); return m_end - m_start; }
50
51    PassRefPtrWillBeRawPtr<Range> createRange(const ContainerNode& scope) const;
52    PassRefPtrWillBeRawPtr<Range> createRangeForSelection(const ContainerNode& scope) const;
53
54    static PlainTextRange create(const ContainerNode& scope, const Range&);
55
56private:
57    PlainTextRange& operator=(const PlainTextRange&)  WTF_DELETED_FUNCTION;
58
59    enum GetRangeFor { ForGeneric, ForSelection };
60    PassRefPtrWillBeRawPtr<Range> createRangeFor(const ContainerNode& scope, GetRangeFor) const;
61
62    const size_t m_start;
63    const size_t m_end;
64};
65
66} // namespace blink
67
68#endif // PlainTextRange_h
69