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/*
* Copyright (C) 2017 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.view;
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build.VERSION_CODES;
import androidx.annotation.Nullable;
import android.util.AttributeSet;
import android.widget.Checkable;
import android.widget.LinearLayout;
/**
* A LinearLayout which is checkable. This will set the checked state when {@link
* #onCreateDrawableState(int)} is called, and can be used with {@code android:duplicateParentState}
* to propagate the drawable state to child views.
*/
public class CheckableLinearLayout extends LinearLayout implements Checkable {
private boolean checked = false;
public CheckableLinearLayout(Context context) {
super(context);
}
public CheckableLinearLayout(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
}
@TargetApi(VERSION_CODES.HONEYCOMB)
public CheckableLinearLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@TargetApi(VERSION_CODES.LOLLIPOP)
public CheckableLinearLayout(
Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
}
{
setFocusable(true);
}
@Override
protected int[] onCreateDrawableState(int extraSpace) {
if (this.checked) {
final int[] superStates = super.onCreateDrawableState(extraSpace + 1);
final int[] checked = new int[] {android.R.attr.state_checked};
return mergeDrawableStates(superStates, checked);
} else {
return super.onCreateDrawableState(extraSpace);
}
}
@Override
public void setChecked(boolean checked) {
this.checked = checked;
refreshDrawableState();
}
@Override
public boolean isChecked() {
return checked;
}
@Override
public void toggle() {
setChecked(!isChecked());
}
}
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