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/**
* Copyright (C) 2016 The ParanoidAndroid 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.pocket;
import android.content.Context;
import android.os.Handler;
import android.os.PowerManager;
import android.os.RemoteException;
import android.os.SystemClock;
import android.text.format.DateUtils;
import android.util.Log;
import android.util.Slog;
/**
* A class that coordinates listening for pocket state.
* <p>
* Use {@link android.content.Context#getSystemService(java.lang.String)}
* with argument {@link android.content.Context#POCKET_SERVICE} to get
* an instance of this class.
*
* Usage: import and create a final {@link IPocketCallback.Stub()} and implement your logic in
* {@link IPocketCallback#onStateChanged(boolean, int)}. Then add your callback to the pocket manager
*
* // define a final callback
* private final IPocketCallback mCallback = new IPocketCallback.Stub() {
*
* @Override
* public void onStateChanged(boolean isDeviceInPocket, int reason) {
* // Your method to handle logic outside of this callback, ideally with a handler
* // posting on UI Thread for view hierarchy operations or with its own background thread.
* handlePocketStateChanged(isDeviceInPocket, reason);
* }
*
* }
*
* // add callback to pocket manager
* private void addCallback() {
* PocketManager manager = (PocketManager) context.getSystemService(Context.POCKET_SERVICE);
* manager.addCallback(mCallback);
* }
*
* @author Carlo Savignano
* @hide
*/
public class PocketManager {
private static final String TAG = PocketManager.class.getSimpleName();
static final boolean DEBUG = false;
/**
* Whether {@link IPocketCallback#onStateChanged(boolean, int)}
* was fired because of the sensor.
* @see PocketService#handleDispatchCallbacks()
*/
public static final int REASON_SENSOR = 0;
/**
* Whether {@link IPocketCallback#onStateChanged(boolean, int)}
* was fired because of an error while accessing service.
* @see #addCallback(IPocketCallback)
* @see #removeCallback(IPocketCallback)
*/
public static final int REASON_ERROR = 1;
/**
* Whether {@link IPocketCallback#onStateChanged(boolean, int)}
* was fired because of a needed reset.
* @see PocketService#binderDied()
*/
public static final int REASON_RESET = 2;
private Context mContext;
private IPocketService mService;
private PowerManager mPowerManager;
private Handler mHandler;
private boolean mPocketViewTimerActive;
public PocketManager(Context context, IPocketService service) {
mContext = context;
mService = service;
if (mService == null) {
Slog.v(TAG, "PocketService was null");
}
mPowerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
mHandler = new Handler();
}
/**
* Add pocket state callback.
* @see PocketService#handleRemoveCallback(IPocketCallback)
*/
public void addCallback(final IPocketCallback callback) {
if (mService != null) try {
mService.addCallback(callback);
} catch (RemoteException e1) {
Log.w(TAG, "Remote exception in addCallback: ", e1);
if (callback != null){
try {
callback.onStateChanged(false, REASON_ERROR);
} catch (RemoteException e2) {
Log.w(TAG, "Remote exception in callback.onPocketStateChanged: ", e2);
}
}
}
}
/**
* Remove pocket state callback.
* @see PocketService#handleAddCallback(IPocketCallback)
*/
public void removeCallback(final IPocketCallback callback) {
if (mService != null) try {
mService.removeCallback(callback);
} catch (RemoteException e1) {
Log.w(TAG, "Remote exception in removeCallback: ", e1);
if (callback != null){
try {
callback.onStateChanged(false, REASON_ERROR);
} catch (RemoteException e2) {
Log.w(TAG, "Remote exception in callback.onPocketStateChanged: ", e2);
}
}
}
}
/**
* Notify service about device interactive state changed.
* {@link PhoneWindowManager#startedWakingUp()}
* {@link PhoneWindowManager#startedGoingToSleep(int)}
*/
public void onInteractiveChanged(boolean interactive) {
boolean isPocketViewShowing = (interactive && isDeviceInPocket());
synchronized (mPocketLockTimeout) {
if (mPocketViewTimerActive != isPocketViewShowing) {
if (isPocketViewShowing) {
if (DEBUG) Log.v(TAG, "Setting pocket timer");
mHandler.removeCallbacks(mPocketLockTimeout); // remove any pending requests
mHandler.postDelayed(mPocketLockTimeout, 15 * DateUtils.SECOND_IN_MILLIS);
mPocketViewTimerActive = true;
} else {
if (DEBUG) Log.v(TAG, "Clearing pocket timer");
mHandler.removeCallbacks(mPocketLockTimeout);
mPocketViewTimerActive = false;
}
}
}
if (mService != null) try {
mService.onInteractiveChanged(interactive);
} catch (RemoteException e) {
Log.w(TAG, "Remote exception in addCallback: ", e);
}
}
/**
* Request listening state change by, but not limited to, external process.
* @see PocketService#handleSetListeningExternal(boolean)
*/
public void setListeningExternal(boolean listen) {
if (mService != null) try {
mService.setListeningExternal(listen);
} catch (RemoteException e) {
Log.w(TAG, "Remote exception in setListeningExternal: ", e);
}
// Clear timeout when user hides pocket lock with long press power.
if (mPocketViewTimerActive && !listen) {
if (DEBUG) Log.v(TAG, "Clearing pocket timer due to override");
mHandler.removeCallbacks(mPocketLockTimeout);
mPocketViewTimerActive = false;
}
}
/**
* Return whether device is in pocket.
* @see PocketService#isDeviceInPocket()
* @return
*/
public boolean isDeviceInPocket() {
if (mService != null) try {
return mService.isDeviceInPocket();
} catch (RemoteException e) {
Log.w(TAG, "Remote exception in isDeviceInPocket: ", e);
}
return false;
}
class PocketLockTimeout implements Runnable {
@Override
public void run() {
mPowerManager.goToSleep(SystemClock.uptimeMillis());
mPocketViewTimerActive = false;
}
}
/** Custom methods **/
public void setPocketLockVisible(boolean visible) {
if (!visible){
if (DEBUG) Log.v(TAG, "Clearing pocket timer");
mHandler.removeCallbacks(mPocketLockTimeout);
mPocketViewTimerActive = false;
}
if (mService != null) try {
mService.setPocketLockVisible(visible);
} catch (RemoteException e) {
Log.w(TAG, "Remote exception in setPocketLockVisible: ", e);
}
}
public boolean isPocketLockVisible() {
if (mService != null) try {
return mService.isPocketLockVisible();
} catch (RemoteException e) {
Log.w(TAG, "Remote exception in isPocketLockVisible: ", e);
}
return false;
}
private PocketLockTimeout mPocketLockTimeout = new PocketLockTimeout();
}
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