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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_RENDERER_GEOLOCATION_DISPATCHER_H_
      6 #define CONTENT_RENDERER_GEOLOCATION_DISPATCHER_H_
      7 
      8 #include "base/memory/scoped_ptr.h"
      9 #include "content/public/renderer/render_view_observer.h"
     10 #include "third_party/WebKit/public/web/WebGeolocationClient.h"
     11 #include "third_party/WebKit/public/web/WebGeolocationController.h"
     12 
     13 namespace blink {
     14 class WebGeolocationController;
     15 class WebGeolocationPermissionRequest;
     16 class WebGeolocationPermissionRequestManager;
     17 class WebGeolocationPosition;
     18 }
     19 
     20 namespace content {
     21 class RenderViewImpl;
     22 struct Geoposition;
     23 
     24 // GeolocationDispatcher is a delegate for Geolocation messages used by
     25 // WebKit.
     26 // It's the complement of GeolocationDispatcherHost (owned by RenderViewHost).
     27 class GeolocationDispatcher : public RenderViewObserver,
     28                               public blink::WebGeolocationClient {
     29  public:
     30   explicit GeolocationDispatcher(RenderViewImpl* render_view);
     31   virtual ~GeolocationDispatcher();
     32 
     33  private:
     34   // RenderView::Observer implementation.
     35   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
     36 
     37   // WebGeolocationClient
     38   virtual void geolocationDestroyed();
     39   virtual void startUpdating();
     40   virtual void stopUpdating();
     41   virtual void setEnableHighAccuracy(bool enable_high_accuracy);
     42   virtual void setController(blink::WebGeolocationController* controller);
     43   virtual bool lastPosition(blink::WebGeolocationPosition& position);
     44   virtual void requestPermission(
     45       const blink::WebGeolocationPermissionRequest& permissionRequest);
     46   virtual void cancelPermissionRequest(
     47       const blink::WebGeolocationPermissionRequest& permissionRequest);
     48 
     49   // Permission for using geolocation has been set.
     50   void OnPermissionSet(int bridge_id, bool is_allowed);
     51 
     52   // We have an updated geolocation position or error code.
     53   void OnPositionUpdated(const content::Geoposition& geoposition);
     54 
     55   // The controller_ is valid for the lifetime of the underlying
     56   // WebCore::GeolocationController. geolocationDestroyed() is
     57   // invoked when the underlying object is destroyed.
     58   scoped_ptr< blink::WebGeolocationController> controller_;
     59 
     60   scoped_ptr<blink::WebGeolocationPermissionRequestManager>
     61       pending_permissions_;
     62   bool enable_high_accuracy_;
     63   bool updating_;
     64 };
     65 
     66 }  // namespace content
     67 
     68 #endif  // CONTENT_RENDERER_GEOLOCATION_DISPATCHER_H_
     69