Add location shared library for location provider APIs.

First part, adding the existing classes in their new library.  The old
code will be removed once everything gets switched to using this.

Change-Id: I27b6ad8c75c16f35300090e95f12a7db5608e3a3

4 files changed, 505 insertions, 0 deletions

diff --git a/location/lib/Android.mk b/location/lib/Android.mk
new file mode 100644
index 0000000..a06478a
--- /dev/null
+++ b/location/lib/Android.mk
@@ -0,0 +1,45 @@
+#
+# 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.
+#
+LOCAL_PATH := $(call my-dir)
+
+# the library
+# ============================================================
+include $(CLEAR_VARS)
+
+LOCAL_MODULE:= com.android.location.provider
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SRC_FILES := \
+            $(call all-subdir-java-files)
+
+include $(BUILD_JAVA_LIBRARY)
+
+
+# ====  com.google.location.xml lib def  ========================
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := com.android.location.provider.xml
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_MODULE_CLASS := ETC
+
+# This will install the file in /system/etc/permissions
+#
+LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/permissions
+
+LOCAL_SRC_FILES := $(LOCAL_MODULE)
+
+include $(BUILD_PREBUILT)
diff --git a/location/lib/com.android.location.provider.xml b/location/lib/com.android.location.provider.xml
new file mode 100644
index 0000000..000e68f
--- /dev/null
+++ b/location/lib/com.android.location.provider.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2008 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.
+-->
+
+<permissions>
+    <library name="com.android.location.provider"
+            file="/system/framework/com.android.location.provider.jar" />
+</permissions>
diff --git a/location/lib/java/com/android/location/provider/GeocodeProvider.java b/location/lib/java/com/android/location/provider/GeocodeProvider.java
new file mode 100644
index 0000000..666bb02
--- /dev/null
+++ b/location/lib/java/com/android/location/provider/GeocodeProvider.java
@@ -0,0 +1,82 @@
+/*
+ * 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 com.android.location.provider;
+
+import android.os.IBinder;
+
+import android.location.Address;
+import android.location.GeocoderParams;
+import android.location.IGeocodeProvider;
+
+import java.util.List;
+
+/**
+ * An abstract superclass for geocode providers that are implemented
+ * outside of the core android platform.
+ * Geocode providers can be implemented as services and return the result of
+ * {@link GeocodeProvider#getBinder()} in its getBinder() method.
+ *
+ * @hide
+ */
+public abstract class GeocodeProvider {
+
+    private IGeocodeProvider.Stub mProvider = new IGeocodeProvider.Stub() {
+        public String getFromLocation(double latitude, double longitude, int maxResults,
+                GeocoderParams params, List<Address> addrs) {
+            return GeocodeProvider.this.onGetFromLocation(latitude, longitude, maxResults,
+                    params, addrs);
+        }
+
+        public String getFromLocationName(String locationName,
+                double lowerLeftLatitude, double lowerLeftLongitude,
+                double upperRightLatitude, double upperRightLongitude, int maxResults,
+                GeocoderParams params, List<Address> addrs) {
+            return GeocodeProvider.this.onGetFromLocationName(locationName, lowerLeftLatitude,
+                    lowerLeftLongitude, upperRightLatitude, upperRightLongitude,
+                    maxResults, params, addrs);
+        }
+    };
+
+    /**
+     * This method is overridden to implement the
+     * {@link android.location.Geocoder#getFromLocation(double, double, int)} method.
+     * Classes implementing this method should not hold a reference to the params parameter.
+     */
+    public abstract String onGetFromLocation(double latitude, double longitude, int maxResults,
+            GeocoderParams params, List<Address> addrs);
+
+    /**
+     * This method is overridden to implement the
+     * {@link android.location.Geocoder#getFromLocationName(String, int, double, double, double, double)} method.
+     * Classes implementing this method should not hold a reference to the params parameter.
+     */
+    public abstract String onGetFromLocationName(String locationName,
+            double lowerLeftLatitude, double lowerLeftLongitude,
+            double upperRightLatitude, double upperRightLongitude, int maxResults,
+            GeocoderParams params, List<Address> addrs);
+
+    /**
+     * Returns the Binder interface for the geocode provider.
+     * This is intended to be used for the onBind() method of
+     * a service that implements a geocoder service.
+     *
+     * @return the IBinder instance for the provider
+     */
+    public IBinder getBinder() {
+        return mProvider;
+    }
+}
diff --git a/location/lib/java/com/android/location/provider/LocationProvider.java b/location/lib/java/com/android/location/provider/LocationProvider.java
new file mode 100644
index 0000000..3714f40
--- /dev/null
+++ b/location/lib/java/com/android/location/provider/LocationProvider.java
@@ -0,0 +1,358 @@
+/*
+ * 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 com.android.location.provider;
+
+import android.content.Context;
+import android.net.NetworkInfo;
+import android.location.Criteria;
+import android.location.ILocationManager;
+import android.location.ILocationProvider;
+import android.location.Location;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.WorkSource;
+import android.util.Log;
+
+/**
+ * An abstract superclass for location providers that are implemented
+ * outside of the core android platform.
+ * Location providers can be implemented as services and return the result of
+ * {@link LocationProvider#getBinder()} in its getBinder() method.
+ *
+ * @hide
+ */
+public abstract class LocationProvider {
+
+    private static final String TAG = "LocationProvider";
+
+    private ILocationManager mLocationManager;
+
+    private ILocationProvider.Stub mProvider = new ILocationProvider.Stub() {
+
+        public boolean requiresNetwork() {
+            return LocationProvider.this.onRequiresNetwork();
+        }
+
+        public boolean requiresSatellite() {
+            return LocationProvider.this.onRequiresSatellite();
+        }
+
+        public boolean requiresCell() {
+            return LocationProvider.this.onRequiresCell();
+        }
+
+        public boolean hasMonetaryCost() {
+            return LocationProvider.this.onHasMonetaryCost();
+        }
+
+        public boolean supportsAltitude() {
+            return LocationProvider.this.onSupportsAltitude();
+        }
+
+        public boolean supportsSpeed() {
+            return LocationProvider.this.onSupportsSpeed();
+        }
+
+        public boolean supportsBearing() {
+            return LocationProvider.this.onSupportsBearing();
+        }
+
+        public int getPowerRequirement() {
+            return LocationProvider.this.onGetPowerRequirement();
+        }
+
+        public boolean meetsCriteria(Criteria criteria) {
+            return LocationProvider.this.onMeetsCriteria(criteria);
+        }
+
+        public int getAccuracy() {
+            return LocationProvider.this.onGetAccuracy();
+        }
+
+        public void enable() {
+            LocationProvider.this.onEnable();
+        }
+
+        public void disable() {
+            LocationProvider.this.onDisable();
+        }
+
+        public int getStatus(Bundle extras) {
+            return LocationProvider.this.onGetStatus(extras);
+        }
+
+        public long getStatusUpdateTime() {
+            return LocationProvider.this.onGetStatusUpdateTime();
+        }
+
+        public String getInternalState() {
+            return LocationProvider.this.onGetInternalState();
+        }
+
+        public void enableLocationTracking(boolean enable) {
+            LocationProvider.this.onEnableLocationTracking(enable);
+        }
+
+        public void setMinTime(long minTime, WorkSource ws) {
+            LocationProvider.this.onSetMinTime(minTime, ws);
+        }
+
+        public void updateNetworkState(int state, NetworkInfo info) {
+            LocationProvider.this.onUpdateNetworkState(state, info);
+        }
+
+        public void updateLocation(Location location) {
+            LocationProvider.this.onUpdateLocation(location);
+        }
+
+        public boolean sendExtraCommand(String command, Bundle extras) {
+            return LocationProvider.this.onSendExtraCommand(command, extras);
+        }
+
+        public void addListener(int uid) {
+            LocationProvider.this.onAddListener(uid, new WorkSource(uid));
+        }
+
+        public void removeListener(int uid) {
+            LocationProvider.this.onRemoveListener(uid, new WorkSource(uid));
+        }
+    };
+
+    public LocationProvider() {
+        IBinder b = ServiceManager.getService(Context.LOCATION_SERVICE);
+        mLocationManager = ILocationManager.Stub.asInterface(b);
+    }
+
+    /**
+     * {@hide}
+     */
+    /* package */ ILocationProvider getInterface() {
+        return mProvider;
+    }
+
+    /**
+     * Returns the Binder interface for the location provider.
+     * This is intended to be used for the onBind() method of
+     * a service that implements a location provider service.
+     *
+     * @return the IBinder instance for the provider
+     */
+    public IBinder getBinder() {
+        return mProvider;
+    }
+
+    /**
+     * Used by the location provider to report new locations.
+     *
+     * @param location new Location to report
+     *
+     * Requires the android.permission.INSTALL_LOCATION_PROVIDER permission.
+     */
+    public void reportLocation(Location location) {
+        try {
+            mLocationManager.reportLocation(location, false);
+        } catch (RemoteException e) {
+            Log.e(TAG, "RemoteException in reportLocation: ", e);
+        }
+    }
+
+    /**
+     * Returns true if the provider requires access to a
+     * data network (e.g., the Internet), false otherwise.
+     */
+    public abstract boolean onRequiresNetwork();
+
+    /**
+     * Returns true if the provider requires access to a
+     * satellite-based positioning system (e.g., GPS), false
+     * otherwise.
+     */
+    public abstract boolean onRequiresSatellite();
+
+    /**
+     * Returns true if the provider requires access to an appropriate
+     * cellular network (e.g., to make use of cell tower IDs), false
+     * otherwise.
+     */
+    public abstract boolean onRequiresCell();
+
+    /**
+     * Returns true if the use of this provider may result in a
+     * monetary charge to the user, false if use is free.  It is up to
+     * each provider to give accurate information.
+     */
+    public abstract boolean onHasMonetaryCost();
+
+    /**
+     * Returns true if the provider is able to provide altitude
+     * information, false otherwise.  A provider that reports altitude
+     * under most circumstances but may occassionally not report it
+     * should return true.
+     */
+    public abstract boolean onSupportsAltitude();
+
+    /**
+     * Returns true if the provider is able to provide speed
+     * information, false otherwise.  A provider that reports speed
+     * under most circumstances but may occassionally not report it
+     * should return true.
+     */
+    public abstract boolean onSupportsSpeed();
+
+    /**
+     * Returns true if the provider is able to provide bearing
+     * information, false otherwise.  A provider that reports bearing
+     * under most circumstances but may occassionally not report it
+     * should return true.
+     */
+    public abstract boolean onSupportsBearing();
+
+    /**
+     * Returns the power requirement for this provider.
+     *
+     * @return the power requirement for this provider, as one of the
+     * constants Criteria.POWER_REQUIREMENT_*.
+     */
+    public abstract int onGetPowerRequirement();
+
+    /**
+     * Returns true if this provider meets the given criteria,
+     * false otherwise.
+     */
+    public abstract boolean onMeetsCriteria(Criteria criteria);
+
+    /**
+     * Returns a constant describing horizontal accuracy of this provider.
+     * If the provider returns finer grain or exact location,
+     * {@link Criteria#ACCURACY_FINE} is returned, otherwise if the
+     * location is only approximate then {@link Criteria#ACCURACY_COARSE}
+     * is returned.
+     */
+    public abstract int onGetAccuracy();
+
+    /**
+     * Enables the location provider
+     */
+    public abstract void onEnable();
+
+    /**
+     * Disables the location provider
+     */
+    public abstract void onDisable();
+
+    /**
+     * Returns a information on the status of this provider.
+     * {@link android.location.LocationProvider#OUT_OF_SERVICE} is returned if the provider is
+     * out of service, and this is not expected to change in the near
+     * future; {@link android.location.LocationProvider#TEMPORARILY_UNAVAILABLE} is returned if
+     * the provider is temporarily unavailable but is expected to be
+     * available shortly; and {@link android.location.LocationProvider#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 onGetStatus(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 SystemClock.elapsedRealtime()}.
+     * 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 onGetStatusUpdateTime();
+
+    /**
+     * Returns debugging information about the location provider.
+     *
+     * @return string describing the internal state of the location provider, or null.
+     */
+    public abstract String onGetInternalState();
+
+    /**
+     * 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 onEnableLocationTracking(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.
+     * @param ws the source this work is coming from.
+     */
+    public abstract void onSetMinTime(long minTime, WorkSource ws);
+
+    /**
+     * Updates the network state for the given provider. This function must
+     * be overwritten if {@link android.location.LocationProvider#requiresNetwork} returns true.
+     * The state is {@link android.location.LocationProvider#TEMPORARILY_UNAVAILABLE} (disconnected)
+     * OR {@link android.location.LocationProvider#AVAILABLE} (connected or connecting).
+     *
+     * @param state data state
+     */
+    public abstract void onUpdateNetworkState(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 onUpdateLocation(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 onSendExtraCommand(String command, Bundle extras);
+
+    /**
+     * Notifies the location provider when a new client is listening for locations.
+     *
+     * @param uid user ID of the new client.
+     * @param ws a WorkSource representation of the client.
+     */
+    public abstract void onAddListener(int uid, WorkSource ws);
+
+    /**
+     * Notifies the location provider when a client is no longer listening for locations.
+     *
+     * @param uid user ID of the client no longer listening.
+     * @param ws a WorkSource representation of the client.
+     */
+    public abstract void onRemoveListener(int uid, WorkSource ws);
+}