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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_frame_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 struct Geoposition;
     22 
     23 // GeolocationDispatcher is a delegate for Geolocation messages used by
     24 // WebKit.
     25 // It's the complement of GeolocationDispatcherHost.
     26 class GeolocationDispatcher : public RenderFrameObserver,
     27                               public blink::WebGeolocationClient {
     28  public:
     29   explicit GeolocationDispatcher(RenderFrame* render_frame);
     30   virtual ~GeolocationDispatcher();
     31 
     32  private:
     33   // RenderFrame::Observer implementation.
     34   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
     35 
     36   // WebGeolocationClient
     37   virtual void geolocationDestroyed();
     38   virtual void startUpdating();
     39   virtual void stopUpdating();
     40   virtual void setEnableHighAccuracy(bool enable_high_accuracy);
     41   virtual void setController(blink::WebGeolocationController* controller);
     42   virtual bool lastPosition(blink::WebGeolocationPosition& position);
     43   virtual void requestPermission(
     44       const blink::WebGeolocationPermissionRequest& permissionRequest);
     45   virtual void cancelPermissionRequest(
     46       const blink::WebGeolocationPermissionRequest& permissionRequest);
     47 
     48   // Permission for using geolocation has been set.
     49   void OnPermissionSet(int bridge_id, bool is_allowed);
     50 
     51   // We have an updated geolocation position or error code.
     52   void OnPositionUpdated(const content::Geoposition& geoposition);
     53 
     54   // The controller_ is valid for the lifetime of the underlying
     55   // WebCore::GeolocationController. geolocationDestroyed() is
     56   // invoked when the underlying object is destroyed.
     57   scoped_ptr<blink::WebGeolocationController> controller_;
     58 
     59   scoped_ptr<blink::WebGeolocationPermissionRequestManager>
     60       pending_permissions_;
     61   bool enable_high_accuracy_;
     62   bool updating_;
     63 };
     64 
     65 }  // namespace content
     66 
     67 #endif  // CONTENT_RENDERER_GEOLOCATION_DISPATCHER_H_
     68