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/*
* Copyright (C) 2018 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.settings.accessibility;
import android.content.Context;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.os.Looper;
import android.os.Vibrator;
import android.provider.Settings;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.BasePreferenceController;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnStart;
import com.android.settingslib.core.lifecycle.events.OnStop;
public abstract class VibrationIntensityPreferenceController extends BasePreferenceController
implements LifecycleObserver, OnStart, OnStop {
protected final Vibrator mVibrator;
private final SettingObserver mSettingsContentObserver;
private final String mSettingKey;
private Preference mPreference;
public VibrationIntensityPreferenceController(Context context, String prefkey,
String settingKey) {
super(context, prefkey);
mVibrator = mContext.getSystemService(Vibrator.class);
mSettingKey = settingKey;
mSettingsContentObserver = new SettingObserver(settingKey) {
@Override
public void onChange(boolean selfChange, Uri uri) {
updateState(mPreference);
}
};
}
@Override
public void onStart() {
mContext.getContentResolver().registerContentObserver(
mSettingsContentObserver.uri,
false /* notifyForDescendants */,
mSettingsContentObserver);
}
@Override
public void onStop() {
mContext.getContentResolver().unregisterContentObserver(mSettingsContentObserver);
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mPreference = screen.findPreference(getPreferenceKey());
}
@Override
public CharSequence getSummary() {
final int intensity = Settings.System.getInt(mContext.getContentResolver(),
mSettingKey, getDefaultIntensity());
switch (intensity) {
case Vibrator.VIBRATION_INTENSITY_OFF:
return mContext.getText(R.string.accessibility_vibration_intensity_off);
case Vibrator.VIBRATION_INTENSITY_LOW:
return mContext.getText(R.string.accessibility_vibration_intensity_low);
case Vibrator.VIBRATION_INTENSITY_MEDIUM:
return mContext.getText(R.string.accessibility_vibration_intensity_medium);
case Vibrator.VIBRATION_INTENSITY_HIGH:
return mContext.getText(R.string.accessibility_vibration_intensity_high);
default:
return "";
}
}
protected abstract int getDefaultIntensity();
private static class SettingObserver extends ContentObserver {
public final Uri uri;
public SettingObserver(String settingKey) {
super(new Handler(Looper.getMainLooper()));
uri = Settings.System.getUriFor(settingKey);
}
}
}
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