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/*
* Copyright (C) 2015 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.setupwizardlib.items;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.widget.CompoundButton;
import androidx.appcompat.widget.SwitchCompat;
import com.android.setupwizardlib.R;
/**
* An item that is displayed with a switch, with methods to manipulate and listen to the checked
* state of the switch. Note that by default, only click on the switch will change the on-off state.
* To change the switch state when tapping on the text, use the click handlers of list view or
* RecyclerItemAdapter with {@link #toggle(View)}.
*/
public class SwitchItem extends Item implements CompoundButton.OnCheckedChangeListener {
/**
* Listener for check state changes of this switch item.
*/
public interface OnCheckedChangeListener {
/**
* Callback when checked state of a {@link SwitchItem} is changed.
*
* @see #setOnCheckedChangeListener(OnCheckedChangeListener)
*/
void onCheckedChange(SwitchItem item, boolean isChecked);
}
private boolean mChecked = false;
private OnCheckedChangeListener mListener;
/**
* Creates a default switch item.
*/
public SwitchItem() {
super();
}
/**
* Creates a switch item. This constructor is used for inflation from XML.
*
* @param context The context which this item is inflated in.
* @param attrs The XML attributes defined on the item.
*/
public SwitchItem(Context context, AttributeSet attrs) {
super(context, attrs);
final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SuwSwitchItem);
mChecked = a.getBoolean(R.styleable.SuwSwitchItem_android_checked, false);
a.recycle();
}
/**
* Sets whether this item should be checked.
*/
public void setChecked(boolean checked) {
if (mChecked != checked) {
mChecked = checked;
notifyItemChanged();
if (mListener != null) {
mListener.onCheckedChange(this, checked);
}
}
}
/**
* @return True if this switch item is currently checked.
*/
public boolean isChecked() {
return mChecked;
}
@Override
protected int getDefaultLayoutResource() {
return R.layout.suw_items_switch;
}
/**
* Toggle the checked state of the switch, without invalidating the entire item.
*
* @param view The root view of this item, typically from the argument of onItemClick.
*/
public void toggle(View view) {
mChecked = !mChecked;
final SwitchCompat switchView = (SwitchCompat) view.findViewById(R.id.suw_items_switch);
switchView.setChecked(mChecked);
}
@Override
public void onBindView(View view) {
super.onBindView(view);
final SwitchCompat switchView = (SwitchCompat) view.findViewById(R.id.suw_items_switch);
switchView.setOnCheckedChangeListener(null);
switchView.setChecked(mChecked);
switchView.setOnCheckedChangeListener(this);
switchView.setEnabled(isEnabled());
}
/**
* Sets a listener to listen for changes in checked state. This listener is invoked in both
* user toggling the switch and calls to {@link #setChecked(boolean)}.
*/
public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
mListener = listener;
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
mChecked = isChecked;
if (mListener != null) {
mListener.onCheckedChange(this, isChecked);
}
}
}
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