1/*
2 * Copyright (C) 2007 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
17package com.android.development;
18
19import android.content.Context;
20import android.view.View;
21import android.view.ViewGroup;
22import android.view.LayoutInflater;
23import android.widget.BaseAdapter;
24
25import java.util.List;
26
27public abstract class ArrayAdapter<E> extends BaseAdapter
28{
29    public ArrayAdapter(Context context, int layoutRes) {
30        mContext = context;
31        mInflater = (LayoutInflater)context.getSystemService(
32            Context.LAYOUT_INFLATER_SERVICE);
33        mLayoutRes = layoutRes;
34    }
35
36    public void setSource(List<E> list) {
37        mList = list;
38    }
39
40    public abstract void bindView(View view, E item);
41
42    public E itemForPosition(int position) {
43        if (mList == null) {
44            return null;
45        }
46
47        return mList.get(position);
48    }
49
50    public int getCount() {
51        return mList != null ? mList.size() : 0;
52    }
53
54    public Object getItem(int position) {
55        return position;
56    }
57
58    public long getItemId(int position) {
59        return position;
60    }
61
62    public View getView(int position, View convertView, ViewGroup parent) {
63        View view;
64        if (convertView == null) {
65            view = mInflater.inflate(mLayoutRes, parent, false);
66        } else {
67            view = convertView;
68        }
69        bindView(view, mList.get(position));
70        return view;
71    }
72
73    private final Context mContext;
74    private final LayoutInflater mInflater;
75    private final int mLayoutRes;
76    private List<E> mList;
77}
78
79