| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package com.taobao.weex.ui.component.helper; |
| |
| import com.taobao.weex.ui.component.Scrollable; |
| import com.taobao.weex.ui.component.WXComponent; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| /** |
| * Created by miomin on 16/7/7. |
| */ |
| public class WXStickyHelper { |
| |
| private Scrollable scrollable; |
| |
| public WXStickyHelper(Scrollable scrollable) { |
| this.scrollable = scrollable; |
| } |
| |
| public void bindStickStyle(WXComponent component, Map<String, Map<String, WXComponent>> mStickyMap) { |
| Scrollable scroller = component.getParentScroller(); |
| if (scroller == null) { |
| return; |
| } |
| Map<String, WXComponent> stickyMap = mStickyMap.get(scroller |
| .getRef()); |
| if (stickyMap == null) { |
| stickyMap = new ConcurrentHashMap<>(); |
| } |
| if (stickyMap.containsKey(component.getRef())) { |
| return; |
| } |
| stickyMap.put(component.getRef(), component); |
| mStickyMap.put(scroller.getRef(), stickyMap); |
| } |
| |
| public void unbindStickStyle(WXComponent component, Map<String, Map<String, WXComponent>> mStickyMap) { |
| Scrollable scroller = component.getParentScroller(); |
| if (scroller == null) { |
| return; |
| } |
| Map<String, WXComponent> stickyMap = mStickyMap.get(scroller |
| .getRef()); |
| if (stickyMap == null) { |
| return; |
| } |
| stickyMap.remove(component.getRef()); |
| } |
| } |