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/*
* Copyright (C) 2016 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.gestures;
import android.content.Context;
import android.os.Bundle;
import android.support.annotation.VisibleForTesting;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.support.v7.preference.TwoStatePreference;
import com.android.settings.R;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settings.widget.VideoPreference;
import com.android.settingslib.core.AbstractPreferenceController;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnCreate;
import com.android.settingslib.core.lifecycle.events.OnPause;
import com.android.settingslib.core.lifecycle.events.OnResume;
import com.android.settingslib.core.lifecycle.events.OnSaveInstanceState;
public abstract class GesturePreferenceController extends AbstractPreferenceController
implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener,
LifecycleObserver, OnResume, OnPause, OnCreate, OnSaveInstanceState {
@VisibleForTesting
static final String KEY_VIDEO_PAUSED = "key_video_paused";
private VideoPreference mVideoPreference;
@VisibleForTesting
boolean mVideoPaused;
public GesturePreferenceController(Context context, Lifecycle lifecycle) {
super(context);
if (lifecycle != null) {
lifecycle.addObserver(this);
}
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
if (isAvailable()) {
mVideoPreference = (VideoPreference) screen.findPreference(getVideoPrefKey());
}
}
@Override
public void updateState(Preference preference) {
super.updateState(preference);
final boolean isEnabled = isSwitchPrefEnabled();
if (preference != null) {
if (preference instanceof TwoStatePreference) {
((TwoStatePreference) preference).setChecked(isEnabled);
} else {
preference.setSummary(isEnabled
? R.string.gesture_setting_on
: R.string.gesture_setting_off);
}
// Different meanings of "Enabled" for the Preference and Controller.
preference.setEnabled(canHandleClicks());
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
if (savedInstanceState != null) {
mVideoPaused = savedInstanceState.getBoolean(KEY_VIDEO_PAUSED, false);
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putBoolean(KEY_VIDEO_PAUSED, mVideoPaused);
}
@Override
public void onPause() {
if (mVideoPreference != null) {
mVideoPaused = mVideoPreference.isVideoPaused();
mVideoPreference.onViewInvisible();
}
}
@Override
public void onResume() {
if (mVideoPreference != null) {
mVideoPreference.onViewVisible(mVideoPaused);
}
}
protected abstract String getVideoPrefKey();
protected abstract boolean isSwitchPrefEnabled();
protected boolean canHandleClicks() {
return true;
}
}