src/com/android/contacts/dialpad/DialpadImageButton.java

/*
 * Copyright (C) 2012 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.contacts.dialpad;

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

/**
 * Custom {@link ImageButton} for dialpad buttons.
 *
 * During horizontal swipe, we want to exit "fading out" animation offered by its background
 * just after starting the swipe.This class overrides {@link #onTouchEvent(MotionEvent)} to achieve
 * the behavior.
 */
public class DialpadImageButton extends ImageButton {

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

    public DialpadImageButton(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        final boolean ret = super.onTouchEvent(event);
        if (event.getAction() == MotionEvent.ACTION_CANCEL) {
            jumpDrawablesToCurrentState();
        }
        return ret;
    }
}