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      1 /*
      2  * Copyright (C) 2010 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. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "InjectedBundleRangeHandle.h"
     28 
     29 #include <WebCore/Range.h>
     30 #include <wtf/HashMap.h>
     31 
     32 using namespace WebCore;
     33 
     34 namespace WebKit {
     35 
     36 typedef HashMap<Range*, InjectedBundleRangeHandle*> DOMHandleCache;
     37 
     38 static DOMHandleCache& domHandleCache()
     39 {
     40     DEFINE_STATIC_LOCAL(DOMHandleCache, cache, ());
     41     return cache;
     42 }
     43 
     44 PassRefPtr<InjectedBundleRangeHandle> InjectedBundleRangeHandle::getOrCreate(Range* range)
     45 {
     46     if (!range)
     47         return 0;
     48 
     49     std::pair<DOMHandleCache::iterator, bool> result = domHandleCache().add(range, 0);
     50     if (!result.second)
     51         return PassRefPtr<InjectedBundleRangeHandle>(result.first->second);
     52 
     53     RefPtr<InjectedBundleRangeHandle> rangeHandle = InjectedBundleRangeHandle::create(range);
     54     result.first->second = rangeHandle.get();
     55     return rangeHandle.release();
     56 }
     57 
     58 PassRefPtr<InjectedBundleRangeHandle> InjectedBundleRangeHandle::create(Range* range)
     59 {
     60     return adoptRef(new InjectedBundleRangeHandle(range));
     61 }
     62 
     63 InjectedBundleRangeHandle::InjectedBundleRangeHandle(Range* range)
     64     : m_range(range)
     65 {
     66 }
     67 
     68 InjectedBundleRangeHandle::~InjectedBundleRangeHandle()
     69 {
     70     domHandleCache().remove(m_range.get());
     71 }
     72 
     73 Range* InjectedBundleRangeHandle::coreRange() const
     74 {
     75     return m_range.get();
     76 }
     77 
     78 } // namespace WebKit
     79