1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.statusbar.policy; 18 19 import android.content.Context; 20 import android.os.UserHandle; 21 22 import com.android.internal.view.RotationPolicy; 23 24 import java.util.concurrent.CopyOnWriteArrayList; 25 26 public final class RotationLockController { 27 private final Context mContext; 28 private final CopyOnWriteArrayList<RotationLockControllerCallback> mCallbacks = 29 new CopyOnWriteArrayList<RotationLockControllerCallback>(); 30 31 private final RotationPolicy.RotationPolicyListener mRotationPolicyListener = 32 new RotationPolicy.RotationPolicyListener() { 33 @Override 34 public void onChange() { 35 notifyChanged(); 36 } 37 }; 38 39 public interface RotationLockControllerCallback { 40 public void onRotationLockStateChanged(boolean rotationLocked, boolean affordanceVisible); 41 } 42 43 public RotationLockController(Context context) { 44 mContext = context; 45 notifyChanged(); 46 if (RotationPolicy.isRotationLockToggleSupported(mContext)) { 47 RotationPolicy.registerRotationPolicyListener(mContext, 48 mRotationPolicyListener, UserHandle.USER_ALL); 49 } 50 } 51 52 public void addRotationLockControllerCallback(RotationLockControllerCallback callback) { 53 mCallbacks.add(callback); 54 } 55 56 public boolean isRotationLocked() { 57 if (RotationPolicy.isRotationLockToggleSupported(mContext)) { 58 return RotationPolicy.isRotationLocked(mContext); 59 } 60 return false; 61 } 62 63 public void setRotationLocked(boolean locked) { 64 if (RotationPolicy.isRotationLockToggleSupported(mContext)) { 65 RotationPolicy.setRotationLock(mContext, locked); 66 } 67 } 68 69 public boolean isRotationLockAffordanceVisible() { 70 if (RotationPolicy.isRotationLockToggleSupported(mContext)) { 71 return RotationPolicy.isRotationLockToggleVisible(mContext); 72 } 73 return false; 74 } 75 76 public void release() { 77 if (RotationPolicy.isRotationLockToggleSupported(mContext)) { 78 RotationPolicy.unregisterRotationPolicyListener(mContext, 79 mRotationPolicyListener); 80 } 81 } 82 83 private void notifyChanged() { 84 for (RotationLockControllerCallback callback : mCallbacks) { 85 callback.onRotationLockStateChanged(RotationPolicy.isRotationLocked(mContext), 86 RotationPolicy.isRotationLockToggleVisible(mContext)); 87 } 88 } 89 } 90
