1 /*
2  * Copyright (C) 2008 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.googlecode.android_scripting.widget;
18 
19 import android.content.Context;
20 import android.util.AttributeSet;
21 import android.view.KeyEvent;
22 import android.view.MotionEvent;
23 import android.widget.ImageButton;
24 
25 import com.googlecode.android_scripting.R;
26 
27 /**
28  * This class exists purely to cancel long click events.
29  */
30 public class NumberPickerButton extends ImageButton {
31 
32   private NumberPicker mNumberPicker;
33 
NumberPickerButton(Context context, AttributeSet attrs, int defStyle)34   public NumberPickerButton(Context context, AttributeSet attrs, int defStyle) {
35     super(context, attrs, defStyle);
36   }
37 
NumberPickerButton(Context context, AttributeSet attrs)38   public NumberPickerButton(Context context, AttributeSet attrs) {
39     super(context, attrs);
40   }
41 
NumberPickerButton(Context context)42   public NumberPickerButton(Context context) {
43     super(context);
44   }
45 
setNumberPicker(NumberPicker picker)46   public void setNumberPicker(NumberPicker picker) {
47     mNumberPicker = picker;
48   }
49 
50   @Override
onTouchEvent(MotionEvent event)51   public boolean onTouchEvent(MotionEvent event) {
52     cancelLongpressIfRequired(event);
53     return super.onTouchEvent(event);
54   }
55 
56   @Override
onTrackballEvent(MotionEvent event)57   public boolean onTrackballEvent(MotionEvent event) {
58     cancelLongpressIfRequired(event);
59     return super.onTrackballEvent(event);
60   }
61 
62   @Override
onKeyUp(int keyCode, KeyEvent event)63   public boolean onKeyUp(int keyCode, KeyEvent event) {
64     if ((keyCode == KeyEvent.KEYCODE_DPAD_CENTER) || (keyCode == KeyEvent.KEYCODE_ENTER)) {
65       cancelLongpress();
66     }
67     return super.onKeyUp(keyCode, event);
68   }
69 
cancelLongpressIfRequired(MotionEvent event)70   private void cancelLongpressIfRequired(MotionEvent event) {
71     if ((event.getAction() == MotionEvent.ACTION_CANCEL)
72         || (event.getAction() == MotionEvent.ACTION_UP)) {
73       cancelLongpress();
74     }
75   }
76 
cancelLongpress()77   private void cancelLongpress() {
78     if (R.id.increment == getId()) {
79       mNumberPicker.cancelIncrement();
80     } else if (R.id.decrement == getId()) {
81       mNumberPicker.cancelDecrement();
82     }
83   }
84 }
85