feat 增加keyDown钩子函数keyFun

demo/demolist/Demo2.js

@@ -71,6 +71,11 @@ class Demo2 extends Component{
     console.log('onSelect', info);
     this.setState({ selectedKeys });
   }
+  // keydown的钩子事件
+  onKeyDown = (e,treeNode)=>{
+    console.log('***',e);
+    return false;
+  }
   render() {
     const loop = data => data.map((item) => {
       if (item.children) {
@@ -91,6 +96,7 @@ class Demo2 extends Component{
         autoExpandParent={this.state.autoExpandParent}
         onCheck={this.onCheck} 
         onSelect={this.onSelect} 
+        keyFun={this.onKeyDown}
       >
         {loop(gData)}
       </Tree>

src/Tree.js

@@ -512,7 +512,8 @@ onExpand(treeNode,keyType) {
   }
   // all keyboard events callbacks run from here at first
   onKeyDown(e,treeNode) {
-    e.stopPropagation();
+    // e.stopPropagation();
+   
     const props = this.props;
     const currentPos = treeNode.props.pos;
     const currentIndex = currentPos.substr(currentPos.lastIndexOf('-')+1);
@@ -533,8 +534,9 @@ onExpand(treeNode,keyType) {
     }else if(e.keyCode == KeyCode.ENTER){
       this.onDoubleClick(treeNode);
     }
+     this.props.keyFun && this.props.keyFun(e,treeNode);
     // e.preventDefault();
-   
+    
   }
 
   _focusDom(selectKeyDomPos,targetDom){