1/*
2 * Copyright (C) 2005, 2006, 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 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 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 InsertTextCommand_h
27#define InsertTextCommand_h
28
29#include "CompositeEditCommand.h"
30
31namespace WebCore {
32
33class DocumentMarkerController;
34class Text;
35
36class TextInsertionMarkerSupplier : public RefCounted<TextInsertionMarkerSupplier> {
37public:
38    virtual ~TextInsertionMarkerSupplier() { }
39    virtual void addMarkersToTextNode(Text*, unsigned offsetOfInsertion, const String& textInserted) = 0;
40protected:
41    TextInsertionMarkerSupplier() { }
42};
43
44class InsertTextCommand : public CompositeEditCommand {
45public:
46    enum RebalanceType {
47        RebalanceLeadingAndTrailingWhitespaces,
48        RebalanceAllWhitespaces
49    };
50
51    static PassRefPtr<InsertTextCommand> create(Document& document, const String& text, bool selectInsertedText = false,
52        RebalanceType rebalanceType = RebalanceLeadingAndTrailingWhitespaces)
53    {
54        return adoptRef(new InsertTextCommand(document, text, selectInsertedText, rebalanceType));
55    }
56
57    static PassRefPtr<InsertTextCommand> createWithMarkerSupplier(Document& document, const String& text, PassRefPtr<TextInsertionMarkerSupplier> markerSupplier)
58    {
59        return adoptRef(new InsertTextCommand(document, text, markerSupplier));
60    }
61
62private:
63
64    InsertTextCommand(Document&, const String& text, bool selectInsertedText, RebalanceType);
65    InsertTextCommand(Document&, const String& text, PassRefPtr<TextInsertionMarkerSupplier>);
66
67    void deleteCharacter();
68
69    virtual void doApply();
70
71#if PLATFORM(IOS)
72    virtual bool isInsertTextCommand() const override { return true; }
73#endif
74
75    Position positionInsideTextNode(const Position&);
76    Position insertTab(const Position&);
77
78    bool performTrivialReplace(const String&, bool selectInsertedText);
79    bool performOverwrite(const String&, bool selectInsertedText);
80    void setEndingSelectionWithoutValidation(const Position& startPosition, const Position& endPosition);
81
82    friend class TypingCommand;
83
84    String m_text;
85    bool m_selectInsertedText;
86    RebalanceType m_rebalanceType;
87    RefPtr<TextInsertionMarkerSupplier> m_markerSupplier;
88};
89
90} // namespace WebCore
91
92#endif // InsertTextCommand_h
93