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.InverseBindingAdapter; 20 import android.databinding.InverseBindingListener; 21 import android.widget.TabHost; 22 import android.widget.TabHost.OnTabChangeListener; 23 24 public class TabHostBindingAdapter { 25 26 @InverseBindingAdapter(attribute = "android:currentTab") 27 public static int getCurrentTab(TabHost view) { 28 return view.getCurrentTab(); 29 } 30 31 @InverseBindingAdapter(attribute = "android:currentTab") 32 public static String getCurrentTabTag(TabHost view) { 33 return view.getCurrentTabTag(); 34 } 35 36 @BindingAdapter("android:currentTab") 37 public static void setCurrentTab(TabHost view, int tab) { 38 if (view.getCurrentTab() != tab) { 39 view.setCurrentTab(tab); 40 } 41 } 42 43 @BindingAdapter("android:currentTab") 44 public static void setCurrentTabTag(TabHost view, String tabTag) { 45 if (view.getCurrentTabTag() != tabTag) { 46 view.setCurrentTabByTag(tabTag); 47 } 48 } 49 50 @BindingAdapter(value = {"android:onTabChanged", "android:currentTabAttrChanged"}, 51 requireAll = false) 52 public static void setListeners(TabHost view, final OnTabChangeListener listener, 53 final InverseBindingListener attrChange) { 54 if (attrChange == null) { 55 view.setOnTabChangedListener(listener); 56 } else { 57 view.setOnTabChangedListener(new OnTabChangeListener() { 58 @Override 59 public void onTabChanged(String tabId) { 60 if (listener != null) { 61 listener.onTabChanged(tabId); 62 } 63 attrChange.onChange(); 64 } 65 }); 66 } 67 } 68 } 69
