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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 #ifndef PlatformStrategies_h
     27 #define PlatformStrategies_h
     28 
     29 #if USE(PLATFORM_STRATEGIES)
     30 
     31 namespace WebCore {
     32 
     33 class CookiesStrategy;
     34 class PluginStrategy;
     35 class LocalizationStrategy;
     36 class VisitedLinkStrategy;
     37 
     38 class PlatformStrategies {
     39 public:
     40     CookiesStrategy* cookiesStrategy()
     41     {
     42         if (!m_cookiesStrategy)
     43             m_cookiesStrategy = createCookiesStrategy();
     44         return m_cookiesStrategy;
     45     }
     46 
     47     PluginStrategy* pluginStrategy()
     48     {
     49         if (!m_pluginStrategy)
     50             m_pluginStrategy = createPluginStrategy();
     51         return m_pluginStrategy;
     52     }
     53 
     54     LocalizationStrategy* localizationStrategy()
     55     {
     56         if (!m_localizationStrategy)
     57             m_localizationStrategy = createLocalizationStrategy();
     58         return m_localizationStrategy;
     59     }
     60 
     61     VisitedLinkStrategy* visitedLinkStrategy()
     62     {
     63         if (!m_visitedLinkStrategy)
     64             m_visitedLinkStrategy = createVisitedLinkStrategy();
     65         return m_visitedLinkStrategy;
     66     }
     67 
     68 protected:
     69     PlatformStrategies()
     70         : m_cookiesStrategy(0)
     71         , m_pluginStrategy(0)
     72         , m_localizationStrategy(0)
     73         , m_visitedLinkStrategy(0)
     74     {
     75     }
     76 
     77     virtual ~PlatformStrategies()
     78     {
     79     }
     80 
     81 private:
     82     virtual CookiesStrategy* createCookiesStrategy() = 0;
     83     virtual PluginStrategy* createPluginStrategy() = 0;
     84     virtual LocalizationStrategy* createLocalizationStrategy();
     85     virtual VisitedLinkStrategy* createVisitedLinkStrategy() = 0;
     86 
     87     CookiesStrategy* m_cookiesStrategy;
     88     PluginStrategy* m_pluginStrategy;
     89     LocalizationStrategy* m_localizationStrategy;
     90     VisitedLinkStrategy* m_visitedLinkStrategy;
     91 };
     92 
     93 PlatformStrategies* platformStrategies();
     94 void setPlatformStrategies(PlatformStrategies*);
     95 
     96 } // namespace WebCore
     97 
     98 #endif // USE(PLATFORM_STRATEGIES)
     99 
    100 #endif // PlatformStrategies_h
    101