支持自定义懒加载延迟时间

demo/demolist/Demo13.js

@@ -113,6 +113,7 @@ class Demo13 extends Component{
             focusable
             treeData={this.state.treeData}
             lazyLoad={true}
+            debounceDuration={100}
             renderTreeNodes={this.renderTreeNodes}
             onExpand={this.onExpand}
             defaultExpandAll={true} 

docs/api.md

@@ -59,6 +59,7 @@ import 'bee-tree/build/Tree.css';
 |expandWhenDoubleClick|双击树节点的时候，是否触发收起/展开动作|bool|false
 |treeData|treeNodes 数据，如果设置则不需要手动构造 TreeNode 节点（key 在整个树范围内唯一）|array\<{key, title, children, [disabled, selectable]}>|-
 |lazyLoad|是否使用懒加载（适用于大数据场景），[如何使用](http://bee.tinper.org/tinper-bee/bee-tree#%E6%BB%9A%E5%8A%A8%E5%8A%A0%E8%BD%BD%E6%A0%91%E8%8A%82%E7%82%B9)|bool|false
+|debounceDuration|懒加载时可以传入一个防抖的时长|number|150
 |renderTitle|使用 treeData 渲染树时使用，可通过此函数自定义树节点内容|Function(item)|-
 |renderTreeNodes|使用 treeData 渲染树节点时，可使用该函数自定义节点显示内容（非必须）|Function(data)|-
 |getScrollContainer|用于滚动加载场景，自定义滚动事件监听的容器|Function(data)|-

src/Tree.js

@@ -1109,7 +1109,7 @@ onExpand(treeNode,keyType) {
     const props = this.props;
     const {
       showLine, prefixCls, className, focusable, checkable, loadData, checkStrictly, tabIndexValue, lazyLoad, getScrollContainer,
-      defaultExpandedKeys, defaultSelectedKeys, defaultCheckedKeys, openAnimation, draggable,
+      defaultExpandedKeys, defaultSelectedKeys, defaultCheckedKeys, openAnimation, draggable, debounceDuration,
       ...others
     } = this.props;
     const customProps = {...omit(others, [
@@ -1225,6 +1225,7 @@ onExpand(treeNode,keyType) {
         <InfiniteScroll
           className="u-tree-infinite-scroll"
           treeList={flatTreeData}
+          debounceDuration={debounceDuration || 150}
           handleTreeListChange={this.handleTreeListChange}
           getScrollParent={getScrollContainer}
           store={this.store}

src/infiniteScroll.js

@@ -150,7 +150,7 @@ export default class InfiniteScroll extends Component {
    * 绑定scroll事件
    */
   attachScrollListener() {
-    const { store } = this.props;
+    const { store, debounceDuration } = this.props;
     const parentElement = this.getParentElement(this.scrollComponent);
     if (!parentElement) {
       return;
@@ -161,15 +161,14 @@ export default class InfiniteScroll extends Component {
     let rowHeight = store.getState().rowHeight; 
     //默认显示20条，rowsInView根据定高算的。
     this.rowsInView = scrollY ? Math.floor(scrollY / rowHeight) : CONFIG.defaultRowsInView;
-
     scrollEl.addEventListener(
       'scroll',
-      debounce(this.scrollListener, 150),
+      debounce(this.scrollListener, (debounceDuration || 150)),
       this.options ? this.options : this.props.useCapture
     );
     scrollEl.addEventListener(
       'resize',
-      debounce(this.scrollListener, 150),
+      debounce(this.scrollListener, (debounceDuration || 150)),
       this.options ? this.options : this.props.useCapture
     );
   }