1/*
2 * Copyright (C) 2012 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 TextInsertionBaseCommand_h
27#define TextInsertionBaseCommand_h
28
29#include "core/editing/CompositeEditCommand.h"
30#include "wtf/text/WTFString.h"
31
32namespace blink {
33
34class Document;
35class VisibleSelection;
36
37class TextInsertionBaseCommand : public CompositeEditCommand {
38public:
39    virtual ~TextInsertionBaseCommand() { };
40
41protected:
42    explicit TextInsertionBaseCommand(Document&);
43    static void applyTextInsertionCommand(LocalFrame*, PassRefPtrWillBeRawPtr<TextInsertionBaseCommand>, const VisibleSelection& selectionForInsertion, const VisibleSelection& endingSelection);
44};
45
46String dispatchBeforeTextInsertedEvent(const String& text, const VisibleSelection& selectionForInsertion, bool insertionIsForUpdatingComposition);
47bool canAppendNewLineFeedToSelection(const VisibleSelection&);
48
49// LineOperation should define member function "opeartor (size_t lineOffset, size_t lineLength, bool isLastLine)".
50// lienLength doesn't include the newline character. So the value of lineLength could be 0.
51template <class LineOperation>
52void forEachLineInString(const String& string, const LineOperation& operation)
53{
54    unsigned offset = 0;
55    size_t newline;
56    while ((newline = string.find('\n', offset)) != kNotFound) {
57        operation(offset, newline - offset, false);
58        offset = newline + 1;
59    }
60    if (!offset)
61        operation(0, string.length(), true);
62    else {
63        unsigned length = string.length();
64        if (length != offset)
65            operation(offset, length - offset, true);
66    }
67}
68
69}
70
71#endif
72