android/view/AbstractListAdapter.java

/*
 *   JSampler - a java front-end for LinuxSampler
 *
 *   Copyright (C) 2011 Grigor Iliev <grigor@grigoriliev.com>
 *
 *   This file is part of JSampler.
 *
 *   JSampler is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License version 2
 *   as published by the Free Software Foundation.
 *
 *   JSampler 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 JSampler; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *   MA  02111-1307  USA
 */

package org.jsampler.android.view;

import java.util.ArrayList;

import android.database.DataSetObserver;
import android.widget.ListAdapter;

public abstract class AbstractListAdapter implements ListAdapter {
        private ArrayList<DataSetObserver> observers = new ArrayList<DataSetObserver>();
        
        public boolean
        areAllItemsEnabled() { return true; }
        
        public boolean
        isEnabled (int position) { return true; }
        
        public int
        getViewTypeCount() { return 1; }
        
        public int
        getItemViewType(int position) { return 42; }
        
        public boolean isEmpty() { return getCount() == 0; }
        
        public long
        getItemId (int position) { return position; }
        
        public boolean
        hasStableIds() { return false; }
        
        public void
        registerDataSetObserver(DataSetObserver observer) {
                observers.add(observer);
        }
        
        public void
        unregisterDataSetObserver (DataSetObserver observer) {
                observers.remove(observer);
        }
        
        public void
        notifyDataSetChanged() {
                for(DataSetObserver observer : observers) observer.onChanged();
        }
        
        public void
        notifyDataSetInvalidated() {
                for(DataSetObserver observer : observers) observer.onInvalidated();
        }
}
1	/*
2	* JSampler - a java front-end for LinuxSampler
3	*
4	* Copyright (C) 2011 Grigor Iliev <grigor@grigoriliev.com>
5	*
6	* This file is part of JSampler.
7	*
8	* JSampler is free software; you can redistribute it and/or modify
9	* it under the terms of the GNU General Public License version 2
10	* as published by the Free Software Foundation.
11	*
12	* JSampler is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	* GNU General Public License for more details.
16	*
17	* You should have received a copy of the GNU General Public License
18	* along with JSampler; if not, write to the Free Software
19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20	* MA 02111-1307 USA
21	*/
22
23	package org.jsampler.android.view;
24
25	import java.util.ArrayList;
26
27	import android.database.DataSetObserver;
28	import android.widget.ListAdapter;
29
30	public abstract class AbstractListAdapter implements ListAdapter {
31	private ArrayList<DataSetObserver> observers = new ArrayList<DataSetObserver>();
32
33	public boolean
34	areAllItemsEnabled() { return true; }
35
36	public boolean
37	isEnabled (int position) { return true; }
38
39	public int
40	getViewTypeCount() { return 1; }
41
42	public int
43	getItemViewType(int position) { return 42; }
44
45	public boolean isEmpty() { return getCount() == 0; }
46
47	public long
48	getItemId (int position) { return position; }
49
50	public boolean
51	hasStableIds() { return false; }
52
53	public void
54	registerDataSetObserver(DataSetObserver observer) {
55	observers.add(observer);
56	}
57
58	public void
59	unregisterDataSetObserver (DataSetObserver observer) {
60	observers.remove(observer);
61	}
62
63	public void
64	notifyDataSetChanged() {
65	for(DataSetObserver observer : observers) observer.onChanged();
66	}
67
68	public void
69	notifyDataSetInvalidated() {
70	for(DataSetObserver observer : observers) observer.onInvalidated();
71	}
72	}