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