third_party/WebKit/Source/web/WebGeolocationPermissionRequestManager.cpp

   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  *
   8  * 1.  Redistributions of source code must retain the above copyright
   9  *     notice, this list of conditions and the following disclaimer.
  10  * 2.  Redistributions in binary form must reproduce the above copyright
  11  *     notice, this list of conditions and the following disclaimer in the
  12  *     documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "public/web/WebGeolocationPermissionRequestManager.h"
  28
  29 #include "modules/geolocation/Geolocation.h"
  30 #include "platform/heap/Handle.h"
  31 #include "public/web/WebGeolocationPermissionRequest.h"
  32 #include "wtf/HashMap.h"
  33
  34 namespace blink {
  35
  36 typedef HeapHashMap<Member<Geolocation>, int> GeolocationIdMap;
  37 typedef HeapHashMap<int, Member<Geolocation>> IdGeolocationMap;
  38
  39 class WebGeolocationPermissionRequestManagerPrivate final : public GarbageCollected<WebGeolocationPermissionRequestManagerPrivate> {
  40 public:
  41     DEFINE_INLINE_TRACE()
  42     {
  43         visitor->trace(m_geolocationIdMap);
  44         visitor->trace(m_idGeolocationMap);
  45     }
  46
  47     GeolocationIdMap m_geolocationIdMap;
  48     IdGeolocationMap m_idGeolocationMap;
  49 };
  50
  51 int WebGeolocationPermissionRequestManager::add(const WebGeolocationPermissionRequest& permissionRequest)
  52 {
  53     Geolocation* geolocation = permissionRequest.geolocation();
  54     WebGeolocationPermissionRequestManagerPrivate* manager = ensureManager();
  55     ASSERT(!manager->m_geolocationIdMap.contains(geolocation));
  56     static int lastId;
  57     int id = ++lastId;
  58     manager->m_geolocationIdMap.add(geolocation, id);
  59     manager->m_idGeolocationMap.add(id, geolocation);
  60     return id;
  61 }
  62
  63 bool WebGeolocationPermissionRequestManager::remove(const WebGeolocationPermissionRequest& permissionRequest, int& id)
  64 {
  65     Geolocation* geolocation = permissionRequest.geolocation();
  66     WebGeolocationPermissionRequestManagerPrivate* manager = ensureManager();
  67     GeolocationIdMap::iterator it = manager->m_geolocationIdMap.find(geolocation);
  68     if (it == manager->m_geolocationIdMap.end())
  69         return false;
  70     id = it->value;
  71     manager->m_geolocationIdMap.remove(it);
  72     manager->m_idGeolocationMap.remove(id);
  73     return true;
  74 }
  75
  76 bool WebGeolocationPermissionRequestManager::remove(int id, WebGeolocationPermissionRequest& permissionRequest)
  77 {
  78     WebGeolocationPermissionRequestManagerPrivate* manager = ensureManager();
  79     IdGeolocationMap::iterator it = manager->m_idGeolocationMap.find(id);
  80     if (it == manager->m_idGeolocationMap.end())
  81         return false;
  82     Geolocation* geolocation = it->value;
  83     permissionRequest = WebGeolocationPermissionRequest(geolocation);
  84     manager->m_idGeolocationMap.remove(it);
  85     manager->m_geolocationIdMap.remove(geolocation);
  86     return true;
  87 }
  88
  89 WebGeolocationPermissionRequestManagerPrivate* WebGeolocationPermissionRequestManager::ensureManager()
  90 {
  91     if (m_private.isNull())
  92         m_private = new WebGeolocationPermissionRequestManagerPrivate;
  93
  94     return m_private.get();
  95 }
  96
  97 void WebGeolocationPermissionRequestManager::reset()
  98 {
  99     m_private.reset();
 100 }
 101
 102 } // namespace blink