fixed drag bug

src/module/dragtree.js

@@ -21,8 +21,8 @@ var MoveToParentCommand = kity.createClass( 'MoveToParentCommand', {
 		for ( var i = nodes.length - 1; i >= 0; i-- ) {
 			node = nodes[ i ];
 			if ( node.getParent() ) {
-                minder.removeNode([node]);
-                minder.appendChildNode(parent,node)
+				minder.removeNode( [ node ] );
+				minder.appendChildNode( parent, node );
 			}
 		}
 		minder.select( nodes, true );
@@ -127,6 +127,7 @@ var DragBox = kity.createClass( "DragBox", {
 		this.remove();
 		this._dragMode = false;
 		this._dropSucceedTarget = null;
+		this._removeDropHint();
 	},
 	_drawForDragMode: function () {
 		this._text.setContent( this._dragSources.length + ' items' );
@@ -191,6 +192,13 @@ var DragBox = kity.createClass( "DragBox", {
 		this._lastSucceedTarget = target;
 	},
 
+	_removeDropHint: function () {
+		var lastTarget = this._lastSucceedTarget;
+		if ( lastTarget ) {
+			this._removeDropStyle( lastTarget );
+		}
+	},
+
 	_removeDropStyle: function ( node ) {
 		node._layout.bgRect.stroke( 'none' );
 		this._rect.stroke( '#3399ff', 1 );

src/module/layout.default.js

@@ -573,6 +573,9 @@ KityMinder.registerModule( "LayoutDefault", function () {
 			_root.setPoint( _root.getLayout().x, _root.getLayout().y );
 		},
 		appendChildNode: function ( parent, node, focus, sibling ) {
+			if ( parent.getType() !== "root" && parent.getChildren().length !== 0 && parent.getData( "expand" ) === false ) {
+				minder.expandNode( parent );
+			}
 			minder.handelNodeInsert( node );
 			node.clearLayout();
 			node.getContRc().clear();