Re: [flexcoders] Flex 2 addTreeNode

Hari Kolasani Tue, 07 Feb 2006 18:00:18 -0800

I think , the Flex 2.0 Tree related classes have been changed quite a bit with the introduction of Hierarchical Data Providers and stuff.

Here is some sample .mxml/as code that worked for me. Hope this will help.

- Hari

*********************************************************************
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.macromedia.com/2005/mxml" backgroundColor="#FFFFFF" creationComplete="initList()">
    <mx:Script>
        <![CDATA[
        import mx.collections.XMLListCollection;

        var origXML:XML;

        public function initList()
        {
            myTree.rootVisible = false;

           //TODO: Get this XML from a data service
            var origXMLString:String = "<MyRoot>            " +
                                            "<node1 label=\"supernode1\" someProp=\"sdsdf \" isBranch=\"true\"/>" +
                                            "<node2 label=\"supernode2\" someProp=\"sdsdf \" isBranch=\"true\"/>" +
                                            "<node3 label=\"supernode3\" someProp=\"sdsdf \" isBranch=\"true\"/>" +
                                        "</MyRoot>";

            origXML = new XML(origXMLString);
            myTree.dataProvider = origXML;
        }
        public function open(event:Object)
        {
            var selectedNode:Object =event.node;

            var myXMLList:XMLList = new XMLList(selectedNode);

           //TODO: Get this XML from a data service based on the selected node.
            var newXMLString:String = "<childnode1 label=\"childnode1\" someProp=\"sdsdf \" isBranch=\"true\" />" +
                                      "<childnode2 label=\"childnode2\" someProp=\"sdsdf \" isBranch=\"false\" />" +
                                    "<childnode3 label=\"childnode3\" someProp=\"sdsdf \" isBranch=\"true\" />" ;

            var myNewXMLList:XMLList = new XMLList(newXMLString);

            selectedNode.setChildren(myNewXMLList);

            myText1.text = selectedNode.toXMLString();
            myText2.text = myTree.dataProvider.source[0];
            myTree.dataProvider = origXML;
        }

        public function close(event:Object)
        {
            var selectedNode:Object = event.node;

            var myXMLList:XMLList = new XMLList(selectedNode);

            removeAllDecendants(myXMLList);

            myText1.text = selectedNode.toXMLString();
            myText2.text = myTree.dataProvider.source[0];
            myTree.dataProvider = origXML;
        }

        public function removeAllDecendants(xmlList:XMLList)
        {
            var myDescendantXMLList:XMLList = xmlList.descendants();
            var myDecendentXMLListCollection:XMLListCollection = new XMLListCollection(myDescendantXMLList);
            myDecendentXMLListCollection.removeAll();
        }

     ]]>
    </mx:Script>

    
    <mx:XML id="myxml">
    </mx:XML>

    <mx:HDividedBox width="100%" height="100%">

        
        <mx:Box>
            <mx:Tree id="myTree" width="600" height="600" labelField="@label" defaultLeafIcon="@Embed('images/folder.gif')" nodeOpen="open(event)" nodeClose="close(event)"/>
        </mx:Box>

        <mx:VBox>
            
            <mx:Box>
                 <mx:TextArea width="600" height="300" id="myText1" />
            </mx:Box>
             <mx:Box>
                 <mx:TextArea width="600" height="300" id="myText2" />
            </mx:Box>
        </mx:VBox>
    </mx:HDividedBox>
</mx:Application>
*********************************************************************

Brendan Meutzner wrote:

Hi, Can someone provide me with an example of addTreeNode for Flex 2? I have a XML structure that is loaded into my Tree as the dataProvider. I would like to be able to click on a node within the tree, and then add a sub node into that selected node. When I get the selectedNode from the tree, and attempt call addTreeNode on it, I get an error "Call attempted on an object that is not a function"... Unfortunately, not much documentation on these methods yet, so any help offered would be very much appreciated. Brendan

-- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com

SPONSORED LINKS

`Web site design development`	`Computer software development`	`Software design and development`
`Macromedia flex`	`Software development best practice`

YAHOO! GROUPS LINKS

Visit your group "flexcoders" on the web.
To unsubscribe from this group, send an email to: [EMAIL PROTECTED]
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

Re: [flexcoders] Flex 2 addTreeNode

Reply via email to