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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.newbubble;
import android.content.Context;
import android.content.res.ColorStateList;
import android.support.v4.view.AccessibilityDelegateCompat;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
import android.support.v7.widget.AppCompatButton;
import android.util.AttributeSet;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import android.widget.Checkable;
/**
* A {@link android.widget.Button Button} that implements {@link Checkable} and propagates the
* checkable state
*/
public class NewCheckableButton extends AppCompatButton implements Checkable {
private boolean checked;
public NewCheckableButton(Context context) {
this(context, null);
}
public NewCheckableButton(Context context, AttributeSet attrs) {
this(context, attrs, android.R.attr.imageButtonStyle);
}
public NewCheckableButton(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
public void setCheckable(boolean checkable) {
ViewCompat.setAccessibilityDelegate(
this,
new AccessibilityDelegateCompat() {
@Override
public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(host, event);
if (checkable) {
event.setChecked(isChecked());
}
}
@Override
public void onInitializeAccessibilityNodeInfo(
View host, AccessibilityNodeInfoCompat info) {
super.onInitializeAccessibilityNodeInfo(host, info);
info.setCheckable(checkable);
if (checkable) {
info.setChecked(isChecked());
}
}
});
}
@Override
public void setChecked(boolean checked) {
if (this.checked != checked) {
this.checked = checked;
int newColor =
checked
? getContext().getColor(R.color.bubble_button_color_blue)
: getContext().getColor(R.color.bubble_button_color_grey);
setTextColor(newColor);
setCompoundDrawableTintList(ColorStateList.valueOf(newColor));
}
}
@Override
public boolean isChecked() {
return checked;
}
@Override
public void toggle() {
setChecked(!checked);
}
}
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