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/*
* Copyright (C) 2020 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.settingslib.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.widget.Switch;
import androidx.preference.PreferenceViewHolder;
import androidx.preference.TwoStatePreference;
import java.util.ArrayList;
import java.util.List;
/**
* MainSwitchPreference is a Preference with a customized Switch.
* This component is used as the main switch of the page
* to enable or disable the prefereces on the page.
*/
public class MainSwitchPreference extends TwoStatePreference implements OnMainSwitchChangeListener {
private final List<OnMainSwitchChangeListener> mSwitchChangeListeners = new ArrayList<>();
private MainSwitchBar mMainSwitchBar;
private CharSequence mTitle;
public MainSwitchPreference(Context context) {
super(context);
init(context, null);
}
public MainSwitchPreference(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
public MainSwitchPreference(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context, attrs);
}
public MainSwitchPreference(Context context, AttributeSet attrs, int defStyleAttr,
int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
init(context, attrs);
}
@Override
public void onBindViewHolder(PreferenceViewHolder holder) {
super.onBindViewHolder(holder);
holder.setDividerAllowedAbove(false);
holder.setDividerAllowedBelow(false);
mMainSwitchBar = (MainSwitchBar) holder.findViewById(R.id.settingslib_main_switch_bar);
updateStatus(isChecked());
registerListenerToSwitchBar();
}
private void init(Context context, AttributeSet attrs) {
setLayoutResource(R.layout.settingslib_main_switch_layout);
mSwitchChangeListeners.add(this);
if (attrs != null) {
final TypedArray a = context.obtainStyledAttributes(attrs,
androidx.preference.R.styleable.Preference, 0 /*defStyleAttr*/,
0 /*defStyleRes*/);
final CharSequence title = a.getText(
androidx.preference.R.styleable.Preference_android_title);
setTitle(title);
a.recycle();
}
}
@Override
public void setChecked(boolean checked) {
super.setChecked(checked);
if (mMainSwitchBar != null && mMainSwitchBar.isChecked() != checked) {
mMainSwitchBar.setChecked(checked);
}
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
if (mMainSwitchBar != null) {
mMainSwitchBar.setTitle(mTitle);
}
}
@Override
public void onSwitchChanged(Switch switchView, boolean isChecked) {
super.setChecked(isChecked);
}
/**
* Update the switch status of preference
*/
public void updateStatus(boolean checked) {
setChecked(checked);
if (mMainSwitchBar != null) {
mMainSwitchBar.setTitle(mTitle);
mMainSwitchBar.show();
}
}
/**
* Adds a listener for switch changes
*/
public void addOnSwitchChangeListener(OnMainSwitchChangeListener listener) {
if (mMainSwitchBar == null) {
mSwitchChangeListeners.add(listener);
} else {
mMainSwitchBar.addOnSwitchChangeListener(listener);
}
}
/**
* Remove a listener for switch changes
*/
public void removeOnSwitchChangeListener(OnMainSwitchChangeListener listener) {
if (mMainSwitchBar == null) {
mSwitchChangeListeners.remove(listener);
} else {
mMainSwitchBar.removeOnSwitchChangeListener(listener);
}
}
private void registerListenerToSwitchBar() {
for (OnMainSwitchChangeListener listener : mSwitchChangeListeners) {
mMainSwitchBar.addOnSwitchChangeListener(listener);
}
mSwitchChangeListeners.clear();
}
}
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