KWQAccObjectCache.mm [plain text]
/*
* Copyright (C) 2003 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "KWQAccObjectCache.h"
#include "KWQAccObject.h"
// The simple Cocoa calls in this file can't throw.
KWQAccObjectCache::KWQAccObjectCache()
{
accCache = NULL;
}
KWQAccObjectCache::~KWQAccObjectCache()
{
// Destroy the dictionary.
CFRelease(accCache);
}
KWQAccObject* KWQAccObjectCache::accObject(khtml::RenderObject* renderer)
{
if (!accCache)
// No need to retain/free either impl key, or id value.
accCache = CFDictionaryCreateMutable(NULL, 0, NULL, NULL);
KWQAccObject* obj = (KWQAccObject*)CFDictionaryGetValue(accCache, renderer);
if (!obj) {
obj = [[KWQAccObject alloc] initWithRenderer: renderer]; // Initial ref happens here.
setAccObject(renderer, obj);
}
return obj;
}
void KWQAccObjectCache::setAccObject(khtml::RenderObject* impl, KWQAccObject* accObject)
{
if (!accCache)
// No need to retain/free either impl key, or id value.
accCache = CFDictionaryCreateMutable(NULL, 0, NULL, NULL);
CFDictionarySetValue(accCache, (const void *)impl, accObject);
}
void KWQAccObjectCache::removeAccObject(khtml::RenderObject* impl)
{
if (!accCache)
return;
KWQAccObject* obj = (KWQAccObject*)CFDictionaryGetValue(accCache, impl);
if (obj) {
[obj detach];
[obj release];
CFDictionaryRemoveValue(accCache, impl);
}
}
void KWQAccObjectCache::detach(khtml::RenderObject* renderer)
{
removeAccObject(renderer);
}