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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_DISPATCHER_HOST_H_
#define CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_DISPATCHER_HOST_H_
#include "content/browser/geolocation/geolocation_provider_impl.h"
#include "content/public/browser/web_contents_observer.h"
class GURL;
namespace content {
class GeolocationPermissionContext;
// GeolocationDispatcherHost is an observer for Geolocation messages.
// It's the complement of GeolocationDispatcher (owned by RenderView).
class GeolocationDispatcherHost : public WebContentsObserver {
public:
explicit GeolocationDispatcherHost(WebContents* web_contents);
virtual ~GeolocationDispatcherHost();
// Pause or resumes geolocation. Resuming when nothing is paused is a no-op.
// If the web contents is paused while not currently using geolocation but
// then goes on to do so before being resumed, then it will not get
// geolocation updates until it is resumed.
void PauseOrResume(bool should_pause);
private:
// WebContentsObserver
virtual void RenderViewHostChanged(RenderViewHost* old_host,
RenderViewHost* new_host) OVERRIDE;
virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
// Message handlers:
void OnRequestPermission(int bridge_id,
const GURL& requesting_frame,
bool user_gesture);
void OnCancelPermissionRequest(int bridge_id,
const GURL& requesting_frame);
void OnStartUpdating(const GURL& requesting_frame,
bool enable_high_accuracy);
void OnStopUpdating();
// Updates the geolocation provider with the currently required update
// options.
void RefreshGeolocationOptions();
void OnLocationUpdate(const Geoposition& position);
scoped_refptr<GeolocationPermissionContext> geolocation_permission_context_;
bool watching_requested_;
bool paused_;
bool high_accuracy_;
scoped_ptr<GeolocationProvider::Subscription> geolocation_subscription_;
DISALLOW_COPY_AND_ASSIGN(GeolocationDispatcherHost);
};
} // namespace content
#endif // CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_DISPATCHER_HOST_H_
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