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// Copyright (c) 2013 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 CHROME_BROWSER_EXTENSIONS_API_LOCATION_LOCATION_MANAGER_H_
#define CHROME_BROWSER_EXTENSIONS_API_LOCATION_LOCATION_MANAGER_H_
#include <string>
#include "base/scoped_observer.h"
#include "extensions/browser/browser_context_keyed_api_factory.h"
#include "extensions/browser/extension_registry_observer.h"
namespace content {
class BrowserContext;
struct Geoposition;
} // namespace content
namespace extensions {
class ExtensionRegistry;
class LocationManager;
class LocationRequest;
namespace api {
namespace location {
struct Coordinates;
} // namespace location
} // namespace api
// BrowserContext's manager of all location watch requests created by
// chrome.location API. Lives in the UI thread.
class LocationManager : public BrowserContextKeyedAPI,
public ExtensionRegistryObserver {
public:
explicit LocationManager(content::BrowserContext* context);
virtual ~LocationManager();
// Adds location request for the given extension, and starts the location
// tracking.
void AddLocationRequest(
const std::string& extension_id,
const std::string& request_name,
const double* distance_update_threshold_meters,
const double* time_between_updates_ms);
// Cancels and removes the request with the given |name| for the given
// extension.
void RemoveLocationRequest(const std::string& extension_id,
const std::string& name);
// BrowserContextKeyedAPI implementation.
static BrowserContextKeyedAPIFactory<LocationManager>* GetFactoryInstance();
// Convenience method to get the LocationManager for a context.
static LocationManager* Get(content::BrowserContext* context);
private:
friend class LocationRequest;
friend class BrowserContextKeyedAPIFactory<LocationManager>;
typedef std::string ExtensionId;
typedef scoped_refptr<LocationRequest> LocationRequestPointer;
typedef std::multimap<ExtensionId, LocationRequestPointer> LocationRequestMap;
typedef LocationRequestMap::iterator LocationRequestIterator;
// Converts |position| from GeolocationProvider to the location API
// |coordinates|.
static void GeopositionToApiCoordinates(
const content::Geoposition& position,
api::location::Coordinates* coordinates);
// Sends a location update to the extension.
void SendLocationUpdate(const std::string& extension_id,
const std::string& request_name,
const content::Geoposition& position);
// ExtensionRegistryObserver implementation.
virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
const Extension* extension) override;
virtual void OnExtensionUnloaded(
content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionInfo::Reason reason) override;
// BrowserContextKeyedAPI implementation.
static const char* service_name() { return "LocationManager"; }
content::BrowserContext* const browser_context_;
// A map of our pending location requests, per extension.
// Invariant: None of the LocationRequestLists are empty.
LocationRequestMap location_requests_;
ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
extension_registry_observer_;
DISALLOW_COPY_AND_ASSIGN(LocationManager);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_API_LOCATION_LOCATION_MANAGER_H_
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