2 files changed, 248 insertions, 0 deletions
diff --git a/location/java/android/location/LocationManager.java b/location/java/android/location/LocationManager.java
index cbe10d9..5c0b7a5 100644
--- a/location/java/android/location/LocationManager.java
+++ b/location/java/android/location/LocationManager.java
@@ -1420,6 +1420,19 @@ public class LocationManager {
     }
 
     /**
+     * Installs a location provider.
+     *
+     * @param provider implementation of the location provider
+     *
+     * @return true if the command succeeds.
+     *
+     * Requires the android.permission.INSTALL_LOCATION_PROVIDER permission.
+     */
+    public boolean installLocationProvider(LocationProviderImpl provider) {
+        return installLocationProvider(provider.getName(), provider.getInterface());
+    }
+
+    /**
      * Installs a geocoder server.
      *
      * @param provider Binder interface for the geocoder provider
diff --git a/location/java/android/location/LocationProviderImpl.java b/location/java/android/location/LocationProviderImpl.java
new file mode 100644
index 0000000..48e42a8
--- /dev/null
+++ b/location/java/android/location/LocationProviderImpl.java
@@ -0,0 +1,235 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.location;
+
+import android.net.NetworkInfo;
+import android.os.Bundle;
+
+/**
+ * An abstract superclass for location providers that are implemented
+ * outside of the core android platform.
+ * A LocationProviderImpl can be installed using the
+ * {@link LocationManager#installLocationProvider(LocationProviderImpl)} method.
+ * Installing a location provider requires the
+ * android.permission.INSTALL_LOCATION_PROVIDER permission.
+ */
+public abstract class LocationProviderImpl extends LocationProvider {
+
+    private ILocationProvider.Stub mProvider = new ILocationProvider.Stub() {
+
+        public boolean requiresNetwork() {
+            return LocationProviderImpl.this.requiresNetwork();
+        }
+
+        public boolean requiresSatellite() {
+            return LocationProviderImpl.this.requiresSatellite();
+        }
+
+        public boolean requiresCell() {
+            return LocationProviderImpl.this.requiresCell();
+        }
+
+        public boolean hasMonetaryCost() {
+            return LocationProviderImpl.this.hasMonetaryCost();
+        }
+
+        public boolean supportsAltitude() {
+            return LocationProviderImpl.this.supportsAltitude();
+        }
+
+        public boolean supportsSpeed() {
+            return LocationProviderImpl.this.supportsSpeed();
+        }
+
+        public boolean supportsBearing() {
+            return LocationProviderImpl.this.supportsBearing();
+        }
+
+        public int getPowerRequirement() {
+            return LocationProviderImpl.this.getPowerRequirement();
+        }
+
+        public int getAccuracy() {
+            return LocationProviderImpl.this.getAccuracy();
+        }
+
+        public void enable() {
+            LocationProviderImpl.this.enable();
+        }
+
+        public void disable() {
+            LocationProviderImpl.this.disable();
+        }
+
+        public boolean isEnabled() {
+            return LocationProviderImpl.this.isEnabled();
+        }
+
+        public int getStatus(Bundle extras) {
+            return LocationProviderImpl.this.getStatus(extras);
+        }
+
+        public long getStatusUpdateTime() {
+            return LocationProviderImpl.this.getStatusUpdateTime();
+        }
+
+        public void enableLocationTracking(boolean enable) {
+            LocationProviderImpl.this.enableLocationTracking(enable);
+        }
+
+        public void setMinTime(long minTime) {
+            LocationProviderImpl.this.setMinTime(minTime);
+        }
+
+        public void updateNetworkState(int state, NetworkInfo info) {
+            LocationProviderImpl.this.updateNetworkState(state, info);
+        }
+
+        public void updateLocation(Location location) {
+            LocationProviderImpl.this.updateLocation(location);
+        }
+
+        public boolean sendExtraCommand(String command, Bundle extras) {
+            return LocationProviderImpl.this.sendExtraCommand(command, extras);
+        }
+
+        public void addListener(int uid) {
+            LocationProviderImpl.this.addListener(uid);
+        }
+
+        public void removeListener(int uid) {
+            LocationProviderImpl.this.removeListener(uid);
+        }
+    };
+
+    public LocationProviderImpl(String name) {
+        super(name);
+    }
+
+    /**
+     * {@hide}
+     */
+    /* package */ ILocationProvider getInterface() {
+        return mProvider;
+    }
+
+    /**
+     * Enables the location provider
+     */
+    public abstract void enable();
+
+    /**
+     * Disables the location provider
+     */
+    public abstract void disable();
+
+    /**
+     * Returns true if the provider is currently enabled
+     */
+    public abstract boolean isEnabled();
+
+    /**
+     * Returns a information on the status of this provider.
+     * {@link #OUT_OF_SERVICE} is returned if the provider is
+     * out of service, and this is not expected to change in the near
+     * future; {@link #TEMPORARILY_UNAVAILABLE} is returned if
+     * the provider is temporarily unavailable but is expected to be
+     * available shortly; and {@link #AVAILABLE} is returned
+     * if the provider is currently available.
+     *
+     * <p> If extras is non-null, additional status information may be
+     * added to it in the form of provider-specific key/value pairs.
+     */
+    public abstract int getStatus(Bundle extras);
+
+    /**
+     * Returns the time at which the status was last updated. It is the
+     * responsibility of the provider to appropriately set this value
+     * using {@link android.os.SystemClock.elapsedRealtime()} each time
+     * there is a status update that it wishes to broadcast to all its
+     * listeners. The provider should be careful not to broadcast
+     * the same status again.
+     *
+     * @return time of last status update in millis since last reboot
+     */
+    public abstract long getStatusUpdateTime();
+
+    /**
+     * Notifies the location provider that clients are listening for locations.
+     * Called with enable set to true when the first client is added and
+     * called with enable set to false when the last client is removed.
+     * This allows the provider to prepare for receiving locations,
+     * and to shut down when no clients are remaining.
+     *
+     * @param enable true if location tracking should be enabled.
+     */
+    public abstract void enableLocationTracking(boolean enable);
+
+    /**
+     * Notifies the location provider of the smallest minimum time between updates amongst
+     * all clients that are listening for locations.  This allows the provider to reduce
+     * the frequency of updates to match the requested frequency.
+     *
+     * @param minTime the smallest minTime value over all listeners for this provider.
+     */
+    public abstract void setMinTime(long minTime);
+
+    /**
+     * Updates the network state for the given provider. This function must
+     * be overwritten if {@link #requiresNetwork} returns true. The state is
+     * {@link #TEMPORARILY_UNAVAILABLE} (disconnected), OR {@link #AVAILABLE}
+     * (connected or connecting).
+     *
+     * @param state data state
+     */
+    public abstract void updateNetworkState(int state, NetworkInfo info);
+
+    /**
+     * Informs the provider when a new location has been computed by a different
+     * location provider.  This is intended to be used as aiding data for the
+     * receiving provider.
+     *
+     * @param location new location from other location provider
+     */
+    public abstract void updateLocation(Location location);
+
+    /**
+     * Implements addditional location provider specific additional commands.
+     *
+     * @param command name of the command to send to the provider.
+     * @param extras optional arguments for the command (or null).
+     * The provider may optionally fill the extras Bundle with results from the command.
+     *
+     * @return true if the command succeeds.
+     */
+    public abstract boolean sendExtraCommand(String command, Bundle extras);
+
+    /**
+     * Notifies the location provider when a new client is listening for locations.
+     *
+     * @param uid user ID of the new client.
+     */
+    public abstract void addListener(int uid);
+
+    /**
+     * Notifies the location provider when a client is no longer listening for locations.
+     *
+     * @param uid user ID of the client no longer listening.
+     */
+    public abstract void removeListener(int uid);
+}
+