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
17package com.android.systemui.statusbar.policy;
18
19import android.content.Context;
20import android.os.UserHandle;
21
22import com.android.internal.view.RotationPolicy;
23
24import java.util.concurrent.CopyOnWriteArrayList;
25
26/** Platform implementation of the rotation lock controller. **/
27public final class RotationLockControllerImpl implements RotationLockController {
28    private final Context mContext;
29    private final CopyOnWriteArrayList<RotationLockControllerCallback> mCallbacks =
30            new CopyOnWriteArrayList<RotationLockControllerCallback>();
31
32    private final RotationPolicy.RotationPolicyListener mRotationPolicyListener =
33            new RotationPolicy.RotationPolicyListener() {
34        @Override
35        public void onChange() {
36            notifyChanged();
37        }
38    };
39
40    public RotationLockControllerImpl(Context context) {
41        mContext = context;
42        setListening(true);
43    }
44
45    public void addRotationLockControllerCallback(RotationLockControllerCallback callback) {
46        mCallbacks.add(callback);
47        notifyChanged(callback);
48    }
49
50    public void removeRotationLockControllerCallback(RotationLockControllerCallback callback) {
51        mCallbacks.remove(callback);
52    }
53
54    public int getRotationLockOrientation() {
55        return RotationPolicy.getRotationLockOrientation(mContext);
56    }
57
58    public boolean isRotationLocked() {
59        return RotationPolicy.isRotationLocked(mContext);
60    }
61
62    public void setRotationLocked(boolean locked) {
63        RotationPolicy.setRotationLock(mContext, locked);
64    }
65
66    public boolean isRotationLockAffordanceVisible() {
67        return RotationPolicy.isRotationLockToggleVisible(mContext);
68    }
69
70    @Override
71    public void setListening(boolean listening) {
72        if (listening) {
73            RotationPolicy.registerRotationPolicyListener(mContext, mRotationPolicyListener,
74                    UserHandle.USER_ALL);
75        } else {
76            RotationPolicy.unregisterRotationPolicyListener(mContext, mRotationPolicyListener);
77        }
78    }
79
80    private void notifyChanged() {
81        for (RotationLockControllerCallback callback : mCallbacks) {
82            notifyChanged(callback);
83        }
84    }
85
86    private void notifyChanged(RotationLockControllerCallback callback) {
87        callback.onRotationLockStateChanged(RotationPolicy.isRotationLocked(mContext),
88                RotationPolicy.isRotationLockToggleVisible(mContext));
89    }
90}
91