73 lines
2.0 KiB
Java
73 lines
2.0 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.util.TypedValue;
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import android.view.View;
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import android.widget.Checkable;
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import android.widget.LinearLayout;
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public class CheckableLinearLayout extends LinearLayout implements Checkable {
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private boolean mChecked;
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private float mDisabledAlpha;
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public CheckableLinearLayout(Context context, AttributeSet attrs) {
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super(context, attrs);
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TypedValue alpha = new TypedValue();
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context.getTheme().resolveAttribute(android.R.attr.disabledAlpha, alpha, true);
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mDisabledAlpha = alpha.getFloat();
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}
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@Override
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public void setEnabled(boolean enabled) {
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super.setEnabled(enabled);
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final int N = getChildCount();
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for (int i = 0; i < N; i++) {
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getChildAt(i).setAlpha(enabled ? 1 : mDisabledAlpha);
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}
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}
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@Override
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public void setChecked(boolean checked) {
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mChecked = checked;
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updateChecked();
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}
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@Override
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public boolean isChecked() {
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return mChecked;
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}
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@Override
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public void toggle() {
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setChecked(!mChecked);
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}
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private void updateChecked() {
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final int N = getChildCount();
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for (int i = 0; i < N; i++) {
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View child = getChildAt(i);
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if (child instanceof Checkable) {
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((Checkable) child).setChecked(mChecked);
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}
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}
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}
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}
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