Comments on: Expanding and collapsing Flex Tree nodes using the expandItem() and expandChildrenOf() methods http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/ Just a bunch of Adobe Flex Examples Mon, 13 Feb 2012 01:38:13 +0000 hourly 1 By: Jerry http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/comment-page-1/#comment-8607 Jerry Tue, 07 Dec 2010 03:17:24 +0000 http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/#comment-8607 callLater method is a good way to resolve the problem about scroll bar can not be seen. great job! callLater method is a good way to resolve the problem about scroll bar can not be seen. great job!

]]> By: polloss http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/comment-page-1/#comment-7560 polloss Thu, 22 Apr 2010 15:40:31 +0000 http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/#comment-7560 For expanding the node after setting the dataProvider of after a dataChange you can call tree.validateNow() and then call the expandItem or expandChildrenOf methods. (The callLater approach hasn't worked for me) For expanding the node after setting the dataProvider of after a dataChange you can call tree.validateNow() and then call the expandItem or expandChildrenOf methods. (The callLater approach hasn’t worked for me)

]]> By: jayanthi http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/comment-page-1/#comment-7328 jayanthi Tue, 23 Mar 2010 11:10:07 +0000 http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/#comment-7328 once you set the dataprovider for the tree atonce expanding its nodes will not work so use callLater to make it work. Example: <pre lang="actionscript3"> tree.dataProvider=newDataProvoder; callLater(openTree); </pre> <pre lang="actionscript3"> public function openTree():void { for each (var item:XML in tree.dataProvider.source) { if( item.children() != null ) { tree.expandItem(item,true,false); } } } </pre> once you set the dataprovider for the tree atonce expanding its nodes will not work so use callLater to make it work.
Example:

tree.dataProvider=newDataProvoder;
callLater(openTree);
        public function openTree():void {
            for each (var item:XML in tree.dataProvider.source) {
                if( item.children() != null ) {
                    tree.expandItem(item,true,false);
                }
            } 
        }
]]> By: alin.mircea http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/comment-page-1/#comment-6298 alin.mircea Mon, 09 Nov 2009 09:51:21 +0000 http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/#comment-6298 It`s my fault, don`t mind the above comment, dinamicly popupating the tree component kind of got in the way It`s my fault, don`t mind the above comment, dinamicly popupating the tree component kind of got in the way

]]> By: alin.mircea http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/comment-page-1/#comment-6297 alin.mircea Mon, 09 Nov 2009 09:37:37 +0000 http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/#comment-6297 As far as I know and have searched, tree.expandChildrenOf() does not have a max-depth. However , when calling it on a 10 +-5 lvls hierarchy it does not open all of them. Calling it on creationComplete opens up to lvl 4 , calling it on a click even opens up to lvl 7. Is it just me? I will repost if I find the cause of this As far as I know and have searched, tree.expandChildrenOf() does not have a max-depth. However , when calling it on a 10 +-5 lvls hierarchy it does not open all of them. Calling it on creationComplete opens up to lvl 4 , calling it on a click even opens up to lvl 7. Is it just me? I will repost if I find the cause of this

]]> By: Nick http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/comment-page-1/#comment-2056 Nick Wed, 05 Dec 2007 11:18:33 +0000 http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/#comment-2056 Is there any way to expand a tree in flex after a filter function has been run on it? ie, a text box has a change event that filters the tree by the key stroke then, what nodes are left are automatically expanded. I've sorted out the filter function but, I can't get the tree to expand on what's left. Their is a expand all and collapse all buttons but I would like the tree to expand by it's self after the filter function. Any help for me? I'd be very greatful. Is there any way to expand a tree in flex after a filter function has been run on it? ie, a text box has a change event that filters the tree by the key stroke then, what nodes are left are automatically expanded. I’ve sorted out the filter function but, I can’t get the tree to expand on what’s left. Their is a expand all and collapse all buttons but I would like the tree to expand by it’s self after the filter function. Any help for me? I’d be very greatful.

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