car-list/src/com/android/car/list/InterceptTouchRelativeLayout.java

/*
 * 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.car.list;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.RelativeLayout;

/**
 * Intercepts all touch event, so they don't pass onto child views. One use case for this is to
 * make the line item in a list view clickable and control the logic and update the sub view.
 */
public class InterceptTouchRelativeLayout extends RelativeLayout {

    public InterceptTouchRelativeLayout(Context context) {
        super(context);
    }

    public InterceptTouchRelativeLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public InterceptTouchRelativeLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    public InterceptTouchRelativeLayout(
            Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    /**
     * Intercepts all touch event.
     * @return true.
     */
    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        return true;
    }
}