Comments on: Displaying the number of children in each branch of a Flex Tree control http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/ Just a bunch of Adobe Flex Examples Sun, 12 Feb 2012 19:26:49 +0000 hourly 1 By: adrian http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-4809 adrian Wed, 29 Jul 2009 08:28:12 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-4809 Do you know how to display only branches (folders) in Tree? Do you know how to display only branches (folders) in Tree?

]]> By: Tony http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-2268 Tony Mon, 19 Jan 2009 09:58:30 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-2268 Cool, it helps me a lot. Thank you. Cool, it helps me a lot.
Thank you.

]]> By: peterd http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-2267 peterd Mon, 07 Apr 2008 04:02:40 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-2267 Dusan, Yeah, this blog isn't very friendly for posting code. You'd need to escape your < as < before posting. As for your ComboBox question, set the <code>prompt</code> property. For an example, see <a href="http://blog.flexexamples.com/2007/09/25/creating-a-simple-label-function-on-a-flex-combobox-control/" rel="nofollow"><u>"Creating a simple label function on a Flex ComboBox control"</u></a>. Peter Dusan,

Yeah, this blog isn’t very friendly for posting code. You’d need to escape your < as &lt; before posting.

As for your ComboBox question, set the prompt property. For an example, see “Creating a simple label function on a Flex ComboBox control”.

Peter

]]> By: Dusan http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-2256 Dusan Sun, 06 Apr 2008 23:41:05 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-2256 it seems that i cannot post xml code, probly i cose i dont know how, but nevermind, this is what i used in tree xml node label="empty folder" isBranch="true" it seems that i cannot post xml code, probly i cose i dont know how, but nevermind, this is what i used in tree xml
node label=”empty folder” isBranch=”true”

]]> By: Dusan http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-2255 Dusan Sun, 06 Apr 2008 23:37:27 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-2255 my tree isnt in the post above, dont know what happened lol my tree isnt in the post above, dont know what happened lol

]]> By: Dusan http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-2257 Dusan Sun, 06 Apr 2008 23:36:22 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-2257 First, thanks for your time, and thanks for the help, you helped me a lot. Now: i did some work and find out some things, and realised what u meant.I used "isBranch="true"" in tree XML and it seems that that did the trick. I got this XML now: my tree looks like this: i used your function tree_labelFunc: private function tree_labelFunc(item:XML):String { var label:String = item.@label; if (tree1.dataDescriptor.hasChildren(item)) {selectednode.text = label; comboBoxFolder[j] = label; label += " (" + tree1.dataDescriptor.getChildren(item).length + ")"; } return label; } Tree is now just like i wanted. Only one thing i need now, its about combobox, im using this: private function comboBox_labelFunc(item:XML):String {return item.@label;} this works fine since i dont have any leafs in root of the tree, and i wont have them. now, the thing i need is, when i start application selected item in combobox is first item in combobox, in this case its "news", how do i set that when application starts noone of the items are selected. Dusan. First, thanks for your time, and thanks for the help, you helped me a lot. Now:

i did some work and find out some things, and realised what u meant.I used “isBranch=”true”" in tree XML and it seems that that did the trick. I got this XML now:

my tree looks like this:

i used your function tree_labelFunc:
private function tree_labelFunc(item:XML):String {
var label:String = item.@label;
if (tree1.dataDescriptor.hasChildren(item)) {selectednode.text = label;
comboBoxFolder[j] = label;
label += ” (” + tree1.dataDescriptor.getChildren(item).length + “)”;
}
return label;
}
Tree is now just like i wanted. Only one thing i need now, its about combobox, im using this:

private function comboBox_labelFunc(item:XML):String {return item.@label;}

this works fine since i dont have any leafs in root of the tree, and i wont have them.
now, the thing i need is, when i start application selected item in combobox is first item in combobox, in this case its “news”, how do i set that when application starts noone of the items are selected.

Dusan.

]]> By: peterd http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-2266 peterd Sat, 05 Apr 2008 01:20:50 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-2266 Dusan, Sorry, I guess I'm confused. It seems you're trying to display possibly nested data in a linear List. How would you know if a node is an empty branch or just a leaf node? The <code>isBranch()</code> method works on a Tree because Trees can have multiple levels with children, whereas a list is usually only for displaying flat data. If you only want to display the "i) four (4)" and "ii) three (2)" branches, I think you'd need to use the following E4X which grabs all branches with at least one child: <pre class="code"> dataProvider="{treeDP..node.(children().length() != 0)}" </pre> Otherwise, how would your Flex application know if it was looking at an empty branch or a leaf node (unless you put some sort of flag in your XML nodes indicating whether something was a branch or leaf). Peter Dusan,

Sorry, I guess I’m confused. It seems you’re trying to display possibly nested data in a linear List. How would you know if a node is an empty branch or just a leaf node?
The isBranch() method works on a Tree because Trees can have multiple levels with children, whereas a list is usually only for displaying flat data.

If you only want to display the “i) four (4)” and “ii) three (2)” branches, I think you’d need to use the following E4X which grabs all branches with at least one child:

dataProvider="{treeDP..node.(children().length() != 0)}"

Otherwise, how would your Flex application know if it was looking at an empty branch or a leaf node (unless you put some sort of flag in your XML nodes indicating whether something was a branch or leaf).

Peter

]]> By: Dusan http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-2265 Dusan Fri, 04 Apr 2008 22:59:12 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-2265 uhh, i guess u dont understand me :( when i put this i code i get both leafs and branches in combobox, i need only branches. I've been trying to solve this whole day :(. i tried to make something with "isBranch()", but with no success. uhh, i guess u dont understand me :(
when i put this i code i get both leafs and branches in combobox, i need only branches. I’ve been trying to solve this whole day :(. i tried to make something with “isBranch()”, but with no success.

]]> By: peterd http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-2264 peterd Fri, 04 Apr 2008 22:48:12 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-2264 Dusan, Something like this? <pre class="code"> <mx:ComboBox id="checkBox" dataProvider="{treeDP..node}" labelFunction="comboBox_labelFunc" /> </pre> Peter Dusan,

Something like this?

<mx:ComboBox id="checkBox"
        dataProvider="{treeDP..node}"
        labelFunction="comboBox_labelFunc" />

Peter

]]> By: Dusan http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/comment-page-1/#comment-2263 Dusan Fri, 04 Apr 2008 21:33:42 +0000 http://blog.flexexamples.com/2008/01/11/displaying-the-number-of-children-in-each-branch-of-a-flex-tree-control/#comment-2263 dataProvider="{treeDP..node.(children().length() != 0)}" , i guess tells that its using non-empty branches, what if i have empty branches and want to display them in combobox? The thing is that im downloading XML file ( which can be changed ) from server and im displaying it as tree. Now when tree is displayed i can add empty branches, and also add leafs in that branches. And i want to display them in combobox ( branches, not leafs :) ) ty a lot for help so far dataProvider=”{treeDP..node.(children().length() != 0)}” , i guess tells that its using non-empty branches, what if i have empty branches and want to display them in combobox? The thing is that im downloading XML file ( which can be changed ) from server and im displaying it as tree. Now when tree is displayed i can add empty branches, and also add leafs in that branches. And i want to display them in combobox ( branches, not leafs :) )

ty a lot for help so far

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