AbsListViewBindingAdapter.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.widget.AbsListView; 22import android.widget.AbsListView.OnScrollListener; 23 24@BindingMethods({ 25 @BindingMethod(type = AbsListView.class, attribute = "android:listSelector", method = "setSelector"), 26 @BindingMethod(type = AbsListView.class, attribute = "android:scrollingCache", method = "setScrollingCacheEnabled"), 27 @BindingMethod(type = AbsListView.class, attribute = "android:smoothScrollbar", method = "setSmoothScrollbarEnabled"), 28 @BindingMethod(type = AbsListView.class, attribute = "android:onMovedToScrapHeap", method = "setRecyclerListener"), 29}) 30public class AbsListViewBindingAdapter { 31 32 @BindingAdapter("android:onScroll") 33 public static void setOnScroll(AbsListView view, OnScroll listener) { 34 setOnScroll(view, listener, null); 35 } 36 37 @BindingAdapter("android:onScrollStateChanged") 38 public static void setOnScroll(AbsListView view, OnScrollStateChanged listener) { 39 setOnScroll(view, null, listener); 40 } 41 42 @BindingAdapter({"android:onScroll", "android:onScrollStateChanged"}) 43 public static void setOnScroll(AbsListView view, final OnScroll scrollListener, 44 final OnScrollStateChanged scrollStateListener) { 45 view.setOnScrollListener(new OnScrollListener() { 46 @Override 47 public void onScrollStateChanged(AbsListView view, int scrollState) { 48 if (scrollStateListener != null) { 49 scrollStateListener.onScrollStateChanged(view, scrollState); 50 } 51 } 52 53 @Override 54 public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, 55 int totalItemCount) { 56 if (scrollListener != null) { 57 scrollListener 58 .onScroll(view, firstVisibleItem, visibleItemCount, totalItemCount); 59 } 60 } 61 }); 62 } 63 64 public interface OnScroll { 65 void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, 66 int totalItemCount); 67 } 68 69 public interface OnScrollStateChanged { 70 void onScrollStateChanged(AbsListView view, int scrollState); 71 } 72} 73