tasks/astrid/common-src/com/todoroo/andlib/widget/NumberPickerWidgetButton.java

/*
 * ASTRID: Android's Simple Task Recording Dashboard
 *
 * Copyright (c) 2009 Tim Su
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package com.todoroo.andlib.widget;

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

import com.todoroo.andlib.service.Autowired;
import com.todoroo.andlib.service.DependencyInjectionService;

/**
 * This class exists purely to cancel long click events.
 */
public class NumberPickerWidgetButton extends ImageButton {

    private NumberPickerWidget mNumberPicker;

    @Autowired
    private Integer numberPickerIncrementId;

    @Autowired
    private Integer numberPickerDecrementId;

    public NumberPickerWidgetButton(Context context, AttributeSet attrs,
            int defStyle) {
        super(context, attrs, defStyle);
        DependencyInjectionService.getInstance().inject(this);
    }

    public NumberPickerWidgetButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        DependencyInjectionService.getInstance().inject(this);
    }

    public NumberPickerWidgetButton(Context context) {
        super(context);
        DependencyInjectionService.getInstance().inject(this);
    }

    public void setNumberPicker(NumberPickerWidget picker) {
        mNumberPicker = picker;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        cancelLongpressIfRequired(event);
        return super.onTouchEvent(event);
    }

    @Override
    public boolean onTrackballEvent(MotionEvent event) {
        cancelLongpressIfRequired(event);
        return super.onTrackballEvent(event);
    }

    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        if ((keyCode == KeyEvent.KEYCODE_DPAD_CENTER)
                || (keyCode == KeyEvent.KEYCODE_ENTER)) {
            cancelLongpress();
        }
        return super.onKeyUp(keyCode, event);
    }

    private void cancelLongpressIfRequired(MotionEvent event) {
        if ((event.getAction() == MotionEvent.ACTION_CANCEL)
                || (event.getAction() == MotionEvent.ACTION_UP)) {
            cancelLongpress();
        }
    }

    private void cancelLongpress() {
        if (numberPickerIncrementId == getId()) {
            mNumberPicker.cancelIncrement();
        } else if (numberPickerDecrementId == getId()) {
            mNumberPicker.cancelDecrement();
        }
    }
}