좋아 아래로 이동 할 수 없습니다. 드래그 할 때 마우스 아래에있는 항목을 선택하는 대신 "적절한"놓기 표시 (항목 사이의 줄)를 사용하여이 기능을 향상시켜야합니다.
가장 관련성이 높은 부분은 onDragOver()
방법이며 항목을 삭제할 수있는 위치를 제한합니다.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Script>
<![CDATA[
import mx.events.DragEvent;
import mx.managers.DragManager;
import mx.core.DragSource;
import mx.core.UIComponent;
import mx.controls.Tree;
private var _draggedItem:XML = null;
private function onDragEnter(event:DragEvent) : void
{
event.preventDefault();
event.currentTarget.hideDropFeedback(event);
var ds:DragSource = event.dragSource;
var items:Array = ds.dataForFormat("treeItems") as Array;
if (items != null && items.length > 0 && (items[0] is XML))
_draggedItem = items[0];
DragManager.acceptDragDrop(UIComponent(event.currentTarget));
}
private function onDragOver(event:DragEvent) : void
{
event.preventDefault();
event.currentTarget.hideDropFeedback(event);
tree.selectedIndex = tree.calculateDropIndex(event);
var node:XML = tree.selectedItem as XML;
// restrict drag & drop to nodes within same parent
if (_draggedItem.parent() != node.parent())
{
DragManager.showFeedback(DragManager.NONE);
return;
}
DragManager.showFeedback(DragManager.MOVE);
}
private function onDragDrop(event:DragEvent) : void
{
event.preventDefault();
event.currentTarget.hideDropFeedback(event);
tree.selectedIndex = tree.calculateDropIndex(event);
var node:XML = tree.selectedItem as XML;
var addToIndex:int = node.childIndex();
if ((_draggedItem.parent() == node.parent()) && (addToIndex != _draggedItem.childIndex()))
{
tree.dataDescriptor.removeChildAt(node.parent(), _draggedItem, _draggedItem.childIndex());
tree.dataDescriptor.addChildAt(node.parent(), _draggedItem, addToIndex);
}
}
private function onDragComplete(event:DragEvent) : void
{
tree.selectedIndex = -1;
}
]]>
</mx:Script>
<mx:XML id="treeData" xmlns="">
<root>
<node label="Massachusetts" type="state" data="MA">
<node label="Boston" type="city" >
<node label="Smoke House Grill" type="restaurant" />
<node label="Equator" type="restaurant" />
<node label="Aquataine" type="restaurant" />
<node label="Grill 23" type="restaurant" />
</node>
<node label="Provincetown" type="city" >
<node label="Lobster Pot" type="restaurant" />
<node label="The Mews" type="restaurant" />
</node>
</node>
<node label="California" type="state" data="CA">
<node label="San Francisco" type="city" >
<node label="Frog Lane" type="restaurant" />
</node>
</node>
</root>
</mx:XML>
<mx:Tree width="100%" height="100%" id="tree"
labelField="@label"
dataProvider="{treeData.node}"
allowMultipleSelection="false"
dragEnabled="true"
dropEnabled="true"
dragMoveEnabled="false"
dragEnter="onDragEnter(event)"
dragOver="onDragOver(event)"
dragDrop="onDragDrop(event)"
dragComplete="onDragComplete(event)">
</mx:Tree>
</mx:Application>
고마워요. 그것은 위대한 작품. – smartdirt