1 /*
2  * Copyright (C) 2021 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.settings.gestures;
18 
19 import android.content.Context;
20 import android.net.Uri;
21 import android.provider.Settings;
22 
23 import androidx.annotation.Nullable;
24 import androidx.lifecycle.Lifecycle;
25 import androidx.lifecycle.LifecycleObserver;
26 import androidx.lifecycle.OnLifecycleEvent;
27 import androidx.preference.Preference;
28 import androidx.preference.PreferenceScreen;
29 
30 import com.android.settings.core.SliderPreferenceController;
31 import com.android.settings.widget.LabeledSeekBarPreference;
32 
33 /** Handles changes to the long press power button sensitivity slider. */
34 public class LongPressPowerSensitivityPreferenceController extends SliderPreferenceController
35         implements PowerMenuSettingsUtils.SettingsStateCallback, LifecycleObserver {
36 
37     @Nullable
38     private final int[] mSensitivityValues;
39 
40     private final PowerMenuSettingsUtils mUtils;
41 
42     @Nullable
43     private LabeledSeekBarPreference mPreference;
44 
LongPressPowerSensitivityPreferenceController(Context context, String preferenceKey)45     public LongPressPowerSensitivityPreferenceController(Context context, String preferenceKey) {
46         super(context, preferenceKey);
47         mSensitivityValues = context.getResources().getIntArray(
48                 com.android.internal.R.array.config_longPressOnPowerDurationSettings);
49         mUtils = new PowerMenuSettingsUtils(context);
50     }
51 
52     /** @OnLifecycleEvent(Lifecycle.Event.ON_START) */
53     @OnLifecycleEvent(Lifecycle.Event.ON_START)
onStart()54     public void onStart() {
55         mUtils.registerObserver(this);
56     }
57 
58     /** @OnLifecycleEvent(Lifecycle.Event.ON_STOP) */
59     @OnLifecycleEvent(Lifecycle.Event.ON_STOP)
onStop()60     public void onStop() {
61         mUtils.unregisterObserver();
62     }
63 
64     @Override
displayPreference(PreferenceScreen screen)65     public void displayPreference(PreferenceScreen screen) {
66         super.displayPreference(screen);
67         mPreference = screen.findPreference(getPreferenceKey());
68         if (mPreference != null) {
69             mPreference.setContinuousUpdates(false);
70             mPreference.setHapticFeedbackMode(
71                     LabeledSeekBarPreference.HAPTIC_FEEDBACK_MODE_ON_TICKS);
72             mPreference.setMin(getMin());
73             mPreference.setMax(getMax());
74         }
75     }
76 
77     @Override
updateState(Preference preference)78     public void updateState(Preference preference) {
79         super.updateState(preference);
80         final LabeledSeekBarPreference pref = (LabeledSeekBarPreference) preference;
81         pref.setVisible(
82                 PowerMenuSettingsUtils.isLongPressPowerForAssistantEnabled(mContext)
83                         && getAvailabilityStatus() == AVAILABLE);
84         pref.setProgress(getSliderPosition());
85     }
86 
87     @Override
getAvailabilityStatus()88     public int getAvailabilityStatus() {
89         if (mSensitivityValues == null
90                 || mSensitivityValues.length < 2
91                 || !PowerMenuSettingsUtils.isLongPressPowerSettingAvailable(mContext)) {
92             return UNSUPPORTED_ON_DEVICE;
93         }
94         return AVAILABLE;
95     }
96 
97     @Override
getSliderPosition()98     public int getSliderPosition() {
99         return mSensitivityValues == null ? 0 : closestValueIndex(mSensitivityValues,
100                 getCurrentSensitivityValue());
101     }
102 
103     @Override
setSliderPosition(int position)104     public boolean setSliderPosition(int position) {
105         if (mSensitivityValues == null || position < 0 || position >= mSensitivityValues.length) {
106             return false;
107         }
108         return Settings.Global.putInt(mContext.getContentResolver(),
109                 Settings.Global.POWER_BUTTON_LONG_PRESS_DURATION_MS,
110                 mSensitivityValues[position]);
111     }
112 
113     @Override
onChange(Uri uri)114     public void onChange(Uri uri) {
115         if (mPreference != null) {
116             updateState(mPreference);
117         }
118     }
119 
120     @Override
getMax()121     public int getMax() {
122         if (mSensitivityValues == null || mSensitivityValues.length == 0) {
123             return 0;
124         }
125         return mSensitivityValues.length - 1;
126     }
127 
128     @Override
getMin()129     public int getMin() {
130         return 0;
131     }
132 
getCurrentSensitivityValue()133     private int getCurrentSensitivityValue() {
134         return Settings.Global.getInt(mContext.getContentResolver(),
135                 Settings.Global.POWER_BUTTON_LONG_PRESS_DURATION_MS,
136                 mContext.getResources().getInteger(
137                         com.android.internal.R.integer.config_longPressOnPowerDurationMs));
138     }
139 
closestValueIndex(int[] values, int needle)140     private static int closestValueIndex(int[] values, int needle) {
141         int minDistance = Integer.MAX_VALUE;
142         int valueIndex = 0;
143         for (int i = 0; i < values.length; i++) {
144             int diff = Math.abs(values[i] - needle);
145             if (diff < minDistance) {
146                 minDistance = diff;
147                 valueIndex = i;
148             }
149         }
150         return valueIndex;
151     }
152 }
153