openlaszlo添另删除树节点(转载)

来源：互联网发布：迷你pc主机知乎编辑：程序博客网时间：2024/05/22 13:04

<canvas debug="true" fontsize="12">
<include href="lz/tree.lzx"/>
<dataset name="treedata">
<root>
<project name="演示方案" isleaf="false">
<scheme name="业务模型一" isleaf="false">
<item name="业务协作流程图" isleaf="true"/>
<item name="组织机构图" isleaf="true"/>
</scheme>
<scheme name="业务模型二" isleaf="false">
<item name="业务协作流程图" isleaf="true"/>
<item name="组织机构图" isleaf="true"/>
</scheme>
</project>
<project name="视频" isleaf="false">
<scheme name="视频分类一" isleaf="false">
<item name="视频一" isleaf="true"/>
</scheme>
<scheme name="视频分类二" isleaf="false">
<item name="视频一" isleaf="true"/>
</scheme>
</project>
<project name="图片" isleaf="false">
<scheme name="图片分类一" isleaf="false">
<item name="图片一" isleaf="true"/>
</scheme>
<scheme name="图片分类二" isleaf="false">
<item name="图片一" isleaf="true"/>
</scheme>
</project>
</root>
</dataset>
<handler name="oninit">
canvas.treecontainer.projecttree.datapath.setPointer(treedata.childNodes[0]);
</handler>
<attribute name="selecteditem" value="null"/>
<button name="adddir" x="0" y="4" text="Add Dir" height="24">
<handler name="onclick">
if(canvas.selecteditem==null){
var projectnode = new LzDataElement('project');
projectnode.setAttr('name','NEW DIR');
projectnode.setAttr('isleaf',false);
canvas.treecontainer.projecttree.datapath.p.appendChild(projectnode);
}
</handler>
</button>
<button name="deldir" x="80" y="4" text="Del Dir" height="24">
<handler name="onclick">
if(canvas.selecteditem!=null){
canvas.selecteditem.deleteNode();
canvas.selecteditem = null;
}
</handler>
</button>
<view name="treecontainer" x="10" y="30" width="200" height="400" bgcolor="#F5F5F5" clip="true">
<tree name="projecttree" text="分类目录" datapath="" isleaf="false" open="true">
<tree datapath="*" text="$path{'@name'}" xindent="20" y="18" closesiblings="false" expander="lztree_plusminus_rsc" isleaf="$path{'@isleaf'}">
<handler name="onclick">
canvas.selecteditem =this.datapath;
</handler>
</tree>
</tree>
<scrollbar/>
</view>
</canvas>