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.adapters;
17
18import android.databinding.BindingAdapter;
19import android.databinding.InverseBindingListener;
20import android.databinding.InverseBindingMethod;
21import android.databinding.InverseBindingMethods;
22import android.widget.RadioGroup;
23import android.widget.RadioGroup.OnCheckedChangeListener;
24
25@InverseBindingMethods({
26        @InverseBindingMethod(type = RadioGroup.class, attribute = "android:checkedButton", method = "getCheckedRadioButtonId"),
27})
28public class RadioGroupBindingAdapter {
29    @BindingAdapter("android:checkedButton")
30    public static void setCheckedButton(RadioGroup view, int id) {
31        if (id != view.getCheckedRadioButtonId()) {
32            view.check(id);
33        }
34    }
35
36    @BindingAdapter(value = {"android:onCheckedChanged", "android:checkedButtonAttrChanged"},
37            requireAll = false)
38    public static void setListeners(RadioGroup view, final OnCheckedChangeListener listener,
39            final InverseBindingListener attrChange) {
40        if (attrChange == null) {
41            view.setOnCheckedChangeListener(listener);
42        } else {
43            view.setOnCheckedChangeListener(new OnCheckedChangeListener() {
44                @Override
45                public void onCheckedChanged(RadioGroup group, int checkedId) {
46                    if (listener != null) {
47                        listener.onCheckedChanged(group, checkedId);
48                    }
49
50                    attrChange.onChange();
51                }
52            });
53        }
54    }
55}
56