| /* |
| * 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. |
| */ |
| |
| package com.android.systemui.statusbar.policy; |
| |
| import android.app.ActivityManager; |
| import android.app.AppOpsManager; |
| import android.app.StatusBarManager; |
| import android.content.BroadcastReceiver; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.location.LocationManager; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| |
| import com.android.systemui.R; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * A controller to manage changes of location related states and update the views accordingly. |
| */ |
| public class LocationControllerImpl extends BroadcastReceiver implements LocationController { |
| |
| private static final int[] mHighPowerRequestAppOpArray |
| = new int[] {AppOpsManager.OP_MONITOR_HIGH_POWER_LOCATION}; |
| |
| private Context mContext; |
| |
| private AppOpsManager mAppOpsManager; |
| private StatusBarManager mStatusBarManager; |
| |
| private boolean mAreActiveLocationRequests; |
| |
| private ArrayList<LocationChangeCallback> mSettingsChangeCallbacks = |
| new ArrayList<LocationChangeCallback>(); |
| private final H mHandler = new H(); |
| |
| public LocationControllerImpl(Context context, Looper bgLooper) { |
| mContext = context; |
| |
| // Register to listen for changes in location settings. |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(LocationManager.HIGH_POWER_REQUEST_CHANGE_ACTION); |
| filter.addAction(LocationManager.MODE_CHANGED_ACTION); |
| context.registerReceiverAsUser(this, UserHandle.ALL, filter, null, new Handler(bgLooper)); |
| |
| mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); |
| mStatusBarManager |
| = (StatusBarManager) context.getSystemService(Context.STATUS_BAR_SERVICE); |
| |
| // Examine the current location state and initialize the status view. |
| updateActiveLocationRequests(); |
| } |
| |
| /** |
| * Add a callback to listen for changes in location settings. |
| */ |
| public void addCallback(LocationChangeCallback cb) { |
| mSettingsChangeCallbacks.add(cb); |
| mHandler.sendEmptyMessage(H.MSG_LOCATION_SETTINGS_CHANGED); |
| } |
| |
| public void removeCallback(LocationChangeCallback cb) { |
| mSettingsChangeCallbacks.remove(cb); |
| } |
| |
| /** |
| * Enable or disable location in settings. |
| * |
| * <p>This will attempt to enable/disable every type of location setting |
| * (e.g. high and balanced power). |
| * |
| * <p>If enabling, a user consent dialog will pop up prompting the user to accept. |
| * If the user doesn't accept, network location won't be enabled. |
| * |
| * @return true if attempt to change setting was successful. |
| */ |
| public boolean setLocationEnabled(boolean enabled) { |
| int currentUserId = ActivityManager.getCurrentUser(); |
| if (isUserLocationRestricted(currentUserId)) { |
| return false; |
| } |
| final ContentResolver cr = mContext.getContentResolver(); |
| // When enabling location, a user consent dialog will pop up, and the |
| // setting won't be fully enabled until the user accepts the agreement. |
| int mode = enabled |
| ? Settings.Secure.LOCATION_MODE_PREVIOUS : Settings.Secure.LOCATION_MODE_OFF; |
| // QuickSettings always runs as the owner, so specifically set the settings |
| // for the current foreground user. |
| return Settings.Secure |
| .putIntForUser(cr, Settings.Secure.LOCATION_MODE, mode, currentUserId); |
| } |
| |
| /** |
| * Returns true if location isn't disabled in settings. |
| */ |
| public boolean isLocationEnabled() { |
| ContentResolver resolver = mContext.getContentResolver(); |
| // QuickSettings always runs as the owner, so specifically retrieve the settings |
| // for the current foreground user. |
| int mode = Settings.Secure.getIntForUser(resolver, Settings.Secure.LOCATION_MODE, |
| Settings.Secure.LOCATION_MODE_OFF, ActivityManager.getCurrentUser()); |
| return mode != Settings.Secure.LOCATION_MODE_OFF; |
| } |
| |
| @Override |
| public boolean isLocationActive() { |
| return mAreActiveLocationRequests; |
| } |
| |
| /** |
| * Returns true if the current user is restricted from using location. |
| */ |
| private boolean isUserLocationRestricted(int userId) { |
| final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| return um.hasUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, |
| UserHandle.of(userId)); |
| } |
| |
| /** |
| * Returns true if there currently exist active high power location requests. |
| */ |
| private boolean areActiveHighPowerLocationRequests() { |
| List<AppOpsManager.PackageOps> packages |
| = mAppOpsManager.getPackagesForOps(mHighPowerRequestAppOpArray); |
| // AppOpsManager can return null when there is no requested data. |
| if (packages != null) { |
| final int numPackages = packages.size(); |
| for (int packageInd = 0; packageInd < numPackages; packageInd++) { |
| AppOpsManager.PackageOps packageOp = packages.get(packageInd); |
| List<AppOpsManager.OpEntry> opEntries = packageOp.getOps(); |
| if (opEntries != null) { |
| final int numOps = opEntries.size(); |
| for (int opInd = 0; opInd < numOps; opInd++) { |
| AppOpsManager.OpEntry opEntry = opEntries.get(opInd); |
| // AppOpsManager should only return OP_MONITOR_HIGH_POWER_LOCATION because |
| // of the mHighPowerRequestAppOpArray filter, but checking defensively. |
| if (opEntry.getOp() == AppOpsManager.OP_MONITOR_HIGH_POWER_LOCATION) { |
| if (opEntry.isRunning()) { |
| return true; |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| // Reads the active location requests and updates the status view if necessary. |
| private void updateActiveLocationRequests() { |
| boolean hadActiveLocationRequests = mAreActiveLocationRequests; |
| mAreActiveLocationRequests = areActiveHighPowerLocationRequests(); |
| if (mAreActiveLocationRequests != hadActiveLocationRequests) { |
| mHandler.sendEmptyMessage(H.MSG_LOCATION_ACTIVE_CHANGED); |
| } |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| final String action = intent.getAction(); |
| if (LocationManager.HIGH_POWER_REQUEST_CHANGE_ACTION.equals(action)) { |
| updateActiveLocationRequests(); |
| } else if (LocationManager.MODE_CHANGED_ACTION.equals(action)) { |
| mHandler.sendEmptyMessage(H.MSG_LOCATION_SETTINGS_CHANGED); |
| } |
| } |
| |
| private final class H extends Handler { |
| private static final int MSG_LOCATION_SETTINGS_CHANGED = 1; |
| private static final int MSG_LOCATION_ACTIVE_CHANGED = 2; |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_LOCATION_SETTINGS_CHANGED: |
| locationSettingsChanged(); |
| break; |
| case MSG_LOCATION_ACTIVE_CHANGED: |
| locationActiveChanged(); |
| break; |
| } |
| } |
| |
| private void locationActiveChanged() { |
| for (LocationChangeCallback cb : mSettingsChangeCallbacks) { |
| cb.onLocationActiveChanged(mAreActiveLocationRequests); |
| } |
| } |
| |
| private void locationSettingsChanged() { |
| boolean isEnabled = isLocationEnabled(); |
| for (LocationChangeCallback cb : mSettingsChangeCallbacks) { |
| cb.onLocationSettingsChanged(isEnabled); |
| } |
| } |
| } |
| } |