AutoCompleteTextViewBindingAdapter.java revision 716ba89e7f459f49ea85070d4710c1d79d715298 
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.BindingMethod;
20import android.databinding.BindingMethods;
21import android.databinding.adapters.AdapterViewBindingAdapter.OnItemSelected;
22import android.databinding.adapters.AdapterViewBindingAdapter.OnItemSelectedComponentListener;
23import android.databinding.adapters.AdapterViewBindingAdapter.OnNothingSelected;
24import android.widget.AutoCompleteTextView;
25import android.widget.AutoCompleteTextView.Validator;
26
27@BindingMethods({
28        @BindingMethod(type = AutoCompleteTextView.class, attribute = "android:completionThreshold", method = "setThreshold"),
29        @BindingMethod(type = AutoCompleteTextView.class, attribute = "android:popupBackground", method = "setDropDownBackgroundDrawable"),
30        @BindingMethod(type = AutoCompleteTextView.class, attribute = "android:onDismiss", method = "setOnDismissListener"),
31        @BindingMethod(type = AutoCompleteTextView.class, attribute = "android:onItemClick", method = "setOnItemClickListener"),
32})
33public class AutoCompleteTextViewBindingAdapter {
34
35    @BindingAdapter("android:fixText")
36    public static void setListener(AutoCompleteTextView view, FixText listener) {
37        setListener(view, listener, null);
38    }
39
40    @BindingAdapter("android:isValid")
41    public static void setListener(AutoCompleteTextView view, IsValid listener) {
42        setListener(view, null, listener);
43    }
44
45    @BindingAdapter({"android:fixText", "android:isValid"})
46    public static void setListener(AutoCompleteTextView view, final FixText fixText,
47            final IsValid isValid) {
48        if (fixText == null && isValid == null) {
49            view.setValidator(null);
50        } else {
51            view.setValidator(new Validator() {
52                @Override
53                public boolean isValid(CharSequence text) {
54                    if (isValid != null) {
55                        return isValid.isValid(text);
56                    } else {
57                        return true;
58                    }
59                }
60
61                @Override
62                public CharSequence fixText(CharSequence invalidText) {
63                    if (fixText != null) {
64                        return fixText.fixText(invalidText);
65                    } else {
66                        return invalidText;
67                    }
68                }
69            });
70        }
71    }
72
73    @BindingAdapter("android:onItemSelected")
74    public static void setListener(AutoCompleteTextView view, OnItemSelected listener) {
75        setListener(view, listener, null);
76    }
77
78    @BindingAdapter("android:onNothingSelected")
79    public static void setListener(AutoCompleteTextView view, OnNothingSelected listener) {
80        setListener(view, null, listener);
81    }
82
83    @BindingAdapter({"android:onItemSelected", "android:onNothingSelected"})
84    public static void setListener(AutoCompleteTextView view, final OnItemSelected selected,
85            final OnNothingSelected nothingSelected) {
86        if (selected == null && nothingSelected == null) {
87            view.setOnItemSelectedListener(null);
88        } else {
89            view.setOnItemSelectedListener(
90                    new OnItemSelectedComponentListener(selected, nothingSelected));
91        }
92    }
93
94    public interface IsValid {
95        boolean isValid(CharSequence text);
96    }
97
98    public interface FixText {
99        CharSequence fixText(CharSequence invalidText);
100    }
101}
102