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.InverseBindingListener; 20 import android.databinding.InverseBindingMethod; 21 import android.databinding.InverseBindingMethods; 22 import android.widget.DatePicker; 23 import android.widget.DatePicker.OnDateChangedListener; 24 import com.android.databinding.library.baseAdapters.R; 25 26 @InverseBindingMethods({ 27 @InverseBindingMethod(type = DatePicker.class, attribute = "android:year"), 28 @InverseBindingMethod(type = DatePicker.class, attribute = "android:month"), 29 @InverseBindingMethod(type = DatePicker.class, attribute = "android:day", method = "getDayOfMonth"), 30 }) 31 public class DatePickerBindingAdapter { 32 @BindingAdapter(value = {"android:year", "android:month", "android:day", 33 "android:onDateChanged", "android:yearAttrChanged", 34 "android:monthAttrChanged", "android:dayAttrChanged"}, requireAll = false) 35 public static void setListeners(DatePicker view, int year, int month, int day, 36 final OnDateChangedListener listener, final InverseBindingListener yearChanged, 37 final InverseBindingListener monthChanged, final InverseBindingListener dayChanged) { 38 if (year == 0) { 39 year = view.getYear(); 40 } 41 if (day == 0) { 42 day = view.getDayOfMonth(); 43 } 44 if (yearChanged == null && monthChanged == null && dayChanged == null) { 45 view.init(year, month, day, listener); 46 } else { 47 DateChangedListener oldListener = ListenerUtil.getListener(view, R.id.onDateChanged); 48 if (oldListener == null) { 49 oldListener = new DateChangedListener(); 50 ListenerUtil.trackListener(view, oldListener, R.id.onDateChanged); 51 } 52 oldListener.setListeners(listener, yearChanged, monthChanged, dayChanged); 53 view.init(year, month, day, oldListener); 54 } 55 } 56 57 private static class DateChangedListener implements OnDateChangedListener { 58 OnDateChangedListener mListener; 59 InverseBindingListener mYearChanged; 60 InverseBindingListener mMonthChanged; 61 InverseBindingListener mDayChanged; 62 63 public void setListeners(OnDateChangedListener listener, InverseBindingListener yearChanged, 64 InverseBindingListener monthChanged, InverseBindingListener dayChanged) { 65 mListener = listener; 66 mYearChanged = yearChanged; 67 mMonthChanged = monthChanged; 68 mDayChanged = dayChanged; 69 } 70 71 @Override 72 public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) { 73 if (mListener != null) { 74 mListener.onDateChanged(view, year, monthOfYear, dayOfMonth); 75 } 76 if (mYearChanged != null) { 77 mYearChanged.onChange(); 78 } 79 if (mMonthChanged != null) { 80 mMonthChanged.onChange(); 81 } 82 if (mDayChanged != null) { 83 mDayChanged.onChange(); 84 } 85 } 86 } 87 } 88
