1/*
2 * Copyright (C) 2015 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 */
16package android.databinding.testapp.adapter;
17
18import android.databinding.BindingAdapter;
19import android.databinding.testapp.GenericView;
20import android.widget.TextView;
21
22import java.util.ArrayList;
23import java.util.Arrays;
24import java.util.Collection;
25import java.util.List;
26
27public class GenericAdapter {
28
29    @BindingAdapter("textList1")
30    public static <T> void setListText(TextView view, List<T> list) {
31        setText(view, list);
32    }
33
34    @BindingAdapter("textList2")
35    public static <T> void setCollectionText(TextView view, Collection<T> list) {
36        setText(view, list);
37    }
38
39    @BindingAdapter("textArray")
40    public static <T> void setArrayText(TextView view, T[] values) {
41        setText(view, Arrays.asList(values));
42    }
43
44    @BindingAdapter({"textList1", "textArray"})
45    public static <T> void setListAndArray(TextView view, List<T> list, T[] values) {
46        setText(view, list);
47    }
48
49    @BindingAdapter("list")
50    public static <T> void setGenericViewValue(GenericView<T> view, List<T> value) {
51        view.setList(value);
52    }
53
54    @BindingAdapter({"list", "array"})
55    public static <T> void setGenericListAndArray(GenericView<T> view, List<T> list, T[] values) {
56        view.setList(list);
57    }
58
59    @BindingAdapter("textList3")
60    public static void setGenericList(TextView view, List<String> list) {
61        setText(view, list);
62    }
63
64    @BindingAdapter("textList3")
65    public static void setGenericIntegerList(TextView view, List<Integer> list) {
66    }
67
68    private static <T> void setText(TextView view, Collection<T> collection) {
69        StringBuilder stringBuilder = new StringBuilder();
70        boolean isFirst = true;
71        for (T val : collection) {
72            if (isFirst) {
73                isFirst = false;
74            } else {
75                stringBuilder.append(' ');
76            }
77            stringBuilder.append(val.toString());
78        }
79        view.setText(stringBuilder.toString());
80    }
81}
82