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author | Zeno Albisser <zeno.albisser@digia.com> | 2013-08-15 21:46:11 +0200 |
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committer | Zeno Albisser <zeno.albisser@digia.com> | 2013-08-15 21:46:11 +0200 |
commit | 679147eead574d186ebf3069647b4c23e8ccace6 (patch) | |
tree | fc247a0ac8ff119f7c8550879ebb6d3dd8d1ff69 /chromium/content/browser/geolocation/location_api_adapter_android.h | |
download | qtwebengine-chromium-679147eead574d186ebf3069647b4c23e8ccace6.tar.gz |
Initial import.
Diffstat (limited to 'chromium/content/browser/geolocation/location_api_adapter_android.h')
-rw-r--r-- | chromium/content/browser/geolocation/location_api_adapter_android.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/chromium/content/browser/geolocation/location_api_adapter_android.h b/chromium/content/browser/geolocation/location_api_adapter_android.h new file mode 100644 index 00000000000..f81ac93826b --- /dev/null +++ b/chromium/content/browser/geolocation/location_api_adapter_android.h @@ -0,0 +1,81 @@ +// 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_LOCATION_API_ADAPTER_ANDROID_H_ +#define CONTENT_BROWSER_GEOLOCATION_LOCATION_API_ADAPTER_ANDROID_H_ + +#include "base/android/jni_helper.h" +#include "base/android/scoped_java_ref.h" +#include "base/memory/ref_counted.h" +#include "base/memory/singleton.h" +#include "base/message_loop/message_loop_proxy.h" +#include "base/synchronization/lock.h" + +namespace content { +class LocationProviderAndroid; +struct Geoposition; + +// Interacts with JNI and reports back to AndroidLocationProvider. +// This class creates a LocationProvider java object and listens for +// updates. +// The simplified flow is: +// GeolocationProvider runs in a Geolocation Thread and fetches geolocation data +// from a LocationProvider. +// AndroidLocationProvider access a singleton AndroidLocationApiAdapter +// AndroidLocationApiAdapter calls via JNI and uses the main thread Looper +// in the java side to listen for location updates. We then bounce these updates +// to the Geolocation thread. +// Note that AndroidLocationApiAdapter is a singleton and there's at most only +// one AndroidLocationProvider that has called Start(). +class AndroidLocationApiAdapter { + public: + // Starts the underlying location provider, returns true if successful. + // Called on the Geolocation thread. + bool Start(LocationProviderAndroid* location_provider, bool high_accuracy); + // Stops the underlying location provider. + // Called on the Geolocation thread. + void Stop(); + + // Returns our singleton. + static AndroidLocationApiAdapter* GetInstance(); + + // Called when initializing chrome_view to obtain a pointer to the java class. + static bool RegisterGeolocationService(JNIEnv* env); + + // Called by JNI on main thread looper. + static void OnNewLocationAvailable(double latitude, + double longitude, + double time_stamp, + bool has_altitude, double altitude, + bool has_accuracy, double accuracy, + bool has_heading, double heading, + bool has_speed, double speed); + static void OnNewErrorAvailable(JNIEnv* env, jstring message); + + private: + friend struct DefaultSingletonTraits<AndroidLocationApiAdapter>; + AndroidLocationApiAdapter(); + ~AndroidLocationApiAdapter(); + + void CreateJavaObject(JNIEnv* env); + + // Called on the JNI main thread looper. + void OnNewGeopositionInternal(const Geoposition& geoposition); + + /// Called on the Geolocation thread. + static void NotifyProviderNewGeoposition(const Geoposition& geoposition); + + base::android::ScopedJavaGlobalRef<jobject> + java_location_provider_android_object_; + LocationProviderAndroid* location_provider_; + + // Guards against the following member which is accessed on Geolocation + // thread and the JNI main thread looper. + base::Lock lock_; + scoped_refptr<base::MessageLoopProxy> message_loop_; +}; + +} // namespace content + +#endif // CONTENT_BROWSER_GEOLOCATION_LOCATION_API_ADAPTER_ANDROID_H_ |