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      1 /*
      2  * Copyright 2010, The Android Open Source Project
      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  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * 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 THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER 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 #ifndef GeolocationPositionCache_h
     27 #define GeolocationPositionCache_h
     28 
     29 #include <wtf/PassRefPtr.h>
     30 #include <wtf/RefPtr.h>
     31 
     32 
     33 namespace WebCore {
     34 
     35 class Geoposition;
     36 class String;
     37 
     38 class GeolocationPositionCache {
     39   public:
     40     GeolocationPositionCache();
     41     ~GeolocationPositionCache();
     42 
     43     void setCachedPosition(Geoposition*);
     44     Geoposition* cachedPosition();
     45     static void setDatabasePath(const String&);
     46 
     47   private:
     48     static PassRefPtr<Geoposition> readFromDB();
     49     static void writeToDB(const Geoposition*);
     50 
     51     static int s_instances;
     52     static RefPtr<Geoposition>* s_cachedPosition;
     53     static String* s_databaseFile;
     54 };
     55 
     56 } // namespace WebCore
     57 
     58 #endif // GeolocationPositionCache_h
     59