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1/*
2 * Copyright (C) 2010 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
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#import "config.h"
27#import "KillRing.h"
28
29namespace WebCore {
30
31extern "C" {
32
33// Kill ring calls. Would be better to use NSKillRing.h, but that's not available as API or SPI.
34
35void _NSInitializeKillRing();
36void _NSAppendToKillRing(NSString *);
37void _NSPrependToKillRing(NSString *);
38NSString *_NSYankFromKillRing();
39void _NSNewKillRingSequence();
40void _NSSetKillRingToYankedState();
41
42}
43
44static void initializeKillRingIfNeeded()
45{
46    static bool initializedKillRing = false;
47    if (!initializedKillRing) {
48        initializedKillRing = true;
49        _NSInitializeKillRing();
50    }
51}
52
53void KillRing::append(const String& string)
54{
55    initializeKillRingIfNeeded();
56    _NSAppendToKillRing(string);
57}
58
59void KillRing::prepend(const String& string)
60{
61    initializeKillRingIfNeeded();
62    _NSPrependToKillRing(string);
63}
64
65String KillRing::yank()
66{
67    initializeKillRingIfNeeded();
68    return _NSYankFromKillRing();
69}
70
71void KillRing::startNewSequence()
72{
73    initializeKillRingIfNeeded();
74    _NSNewKillRingSequence();
75}
76
77void KillRing::setToYankedState()
78{
79    initializeKillRingIfNeeded();
80    _NSSetKillRingToYankedState();
81}
82
83} // namespace WebCore
84