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      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  */
     16 package android.databinding.adapters;
     17 
     18 import android.databinding.BindingAdapter;
     19 import android.databinding.BindingMethod;
     20 import android.databinding.BindingMethods;
     21 import android.databinding.adapters.AdapterViewBindingAdapter.OnItemSelected;
     22 import android.databinding.adapters.AdapterViewBindingAdapter.OnItemSelectedComponentListener;
     23 import android.databinding.adapters.AdapterViewBindingAdapter.OnNothingSelected;
     24 import android.widget.AutoCompleteTextView;
     25 import 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 })
     33 public class AutoCompleteTextViewBindingAdapter {
     34 
     35     @BindingAdapter(value = {"android:fixText", "android:isValid"}, requireAll = false)
     36     public static void setValidator(AutoCompleteTextView view, final FixText fixText,
     37             final IsValid isValid) {
     38         if (fixText == null && isValid == null) {
     39             view.setValidator(null);
     40         } else {
     41             view.setValidator(new Validator() {
     42                 @Override
     43                 public boolean isValid(CharSequence text) {
     44                     if (isValid != null) {
     45                         return isValid.isValid(text);
     46                     } else {
     47                         return true;
     48                     }
     49                 }
     50 
     51                 @Override
     52                 public CharSequence fixText(CharSequence invalidText) {
     53                     if (fixText != null) {
     54                         return fixText.fixText(invalidText);
     55                     } else {
     56                         return invalidText;
     57                     }
     58                 }
     59             });
     60         }
     61     }
     62 
     63     @BindingAdapter(value = {"android:onItemSelected", "android:onNothingSelected"},
     64             requireAll = false)
     65     public static void setOnItemSelectedListener(AutoCompleteTextView view,
     66             final OnItemSelected selected, final OnNothingSelected nothingSelected) {
     67         if (selected == null && nothingSelected == null) {
     68             view.setOnItemSelectedListener(null);
     69         } else {
     70             view.setOnItemSelectedListener(
     71                     new OnItemSelectedComponentListener(selected, nothingSelected, null));
     72         }
     73     }
     74 
     75     public interface IsValid {
     76         boolean isValid(CharSequence text);
     77     }
     78 
     79     public interface FixText {
     80         CharSequence fixText(CharSequence invalidText);
     81     }
     82 }
     83