Actionscript 3 :: Which Event Or Function Is Triggered When Tree Node Is Expanded/collapsed ( Flex 4.5 )

May 28, 2011

I am looking for the function or event, which is called when tree node is expanded/colapsed inside Tree object in Flex 4.5.

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I have added an event handler for itemOpening event for the tree component inside the handler basically ido myTree.selectedItem = event.item ; and then add the new data inside myTree.selectedItem.children.push(newData); But It do not show simultaneously instead I have to close , open the branch again to see the new data. I think I need to refresh something after adding new data but dont know what? below is the code but without the declaration , script tag etc

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[Code]....

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[Code]...

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I have a tree im my mxml that uses a XMLListCollection as dataProvider. It´s XML is like:

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How can I make the node for, say, id==4 visible AND selected?

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[Bindable]
private var company:XML =
<list>

[Code]....

The Particular code adds a new node to the operations, but i want to add a node any item i select.

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I've got a couple trees that I allow a user to drag and drop from one to another, works great except one apparent limitation. I'm picking up where they drop it in the list and adding it to the dataProvider manually. The user can drop it everywhere except after the last child of any particular node it seems, since it reads that position as being between the node and it's next sibling.

It seems the best way to deal with this is to add something like a dummy leaf so the user has something to drop the item in front of. I don't want this leaf in the dataProvider, so is it possible to add a leaf (or a folder) to the tree without adding it to the dataProvider?

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Flex :: Actionscript 3 - Delete Node Of Type Object From Flex Tree Component?

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I have a tree with nodes , and a delete button , first user select the node and click this delete button , I want this node to be removed from the tree , Its not XML , every node in tree is of type Object

{label:'folder',children:[{label:'file1'}]}

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I am currently developing a dynamic LineChart in FLEX 4.I am implementing a Tree control next to my LineChart, which will filter the LineChart dataprovider and lineseries. The tree control has several branches and ultimately 5 children (leaf nodes) at the bottom of the last branch.I need the leaf node/children to be displayed as checkboxes inside the tree control.As I understand,this will require overrides in the TreeItemRenderer class.This is where I am a little confused on how to implement that.Currently I can distinguish between leaf and branches using this code, in my main MXML component.I added this because it may be helpful to some beginning FLEXdevelopers, such as myself, who cannot easily find this functionality documented well:

private function treeClick(e:ListEvent):void {
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I am looking at the TreeItemRenderer override class from the following example here: In the example, they override the "createChildden" super function to add checkboxes to the tree control.My question is, can I override the createChildren function directly in my MXML component, and not have to use an entire class file to override this functionality? Must I re-invent the wheel to do this?Also, how can I distinguish that my treeItem is a leaf node and not a parent, in the override function? I only want to add checkboxes to the leaf nodes, how can I differentiate? The following example adds checkboxes to all branches and leaf nodes, but I want to add checkboxes only to leaf node/children. How would you approach that?

override protected function createChildren( ): void
{
super.createChildren( );[code]............

Here is my tree tag:

<mx:Tree id="mainTree" dataProvider="{treeData}" itemRenderer="TreeCheckBoxItemRenderer" labelField="@label" showRoot="false" width="100%" height="100%" itemClick="treeClick(event)" />

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I have a Tree Control on which I let user add some nodes. When a node gets added I want to let the user edit the added control right away. How do I get the itemEditorInstance of a just added xml node?

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I'm using a flex combobox component in Flex builder 3 with sdk 3.4 and I'm trying to use it to expand and select the tree node that the user selected in the combobox component on the change event. However, I'm getting an error when I go to assign the combobox seletedItem to the tree selectedItem. Can you please help? What am I doing wrong?

[Code]...

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I have inherited a Flex air project and have not worked with trees before. The tree is displaying an xml file hierarchically. The user can make a change to the data. I need to save the data of the entire tree to a file.I can save the currently selected item to a file, no problem. But I need to save all the data from the root of the tree, forward.I would think I could make a copy of the tree, and set the selected item of my new tree to root, or something. Sort of like this pseudo code:

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This creates a compile error, but hopefully you can see what I'm trying to do.

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I need to have link buttons at end of each parent node as shown below:
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If i want check parent node checkbox means below childerns checkbox will select automatic .[code]...

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Jan 10, 2010

I have created different buttons on different movieclip. Then i assigned onPress event on each buttons. But the function of onPress event is not triggered. The arrangement of movieclips is following.

var mainMC:MovieClip = _root.createEmptyMovieClip("mainMC",0);
mainMC._alpha = 0;
var adImgMC:MovieClip = mainMC.createEmptyMovieClip("adImgMC",0);
var offerMC:MovieClip = mainMC.createEmptyMovieClip("offerMC",1);
var offerList:MovieClip = offerMC.createEmptyMovieClip("offerList",0);
[Code] .....

I have created an event as follows:
offerList.onRollOver = function(){
offerList.stopTween();
clearInterval(autoScrlTimer);
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ovrFlag = true
}
I doubt that the onPress event is not working because of the above piece of code.

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I want to have a tree node renderer which act as follow :Clicking on it change the node height.I have tried as follow : to create a custom class derived from UIComponentand then insert it inside the tree node renderer, but because of some reason it doesn't work as I expected.Here's the code :

package
{
import flash.display.Sprite;

[code].....

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ActionScript 3.0 :: Passing Parameters To An Event Triggered Function?

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Look at the simple code below:

Code:
stage.addEventListener(MouseEvent.CLICK,traceMe);
function traceMe(evt:MouseEvent)
{
trace ("hello world!");
}

What if I want to pass a parameter to the traceMe function? There is a way to do that?

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Jan 26, 2011

i have a Flex tree control and im trying to select a tree node 3 levels down right after the dataProvider is assigned with a collection object like the following.basically treeItem1, treeItem2, treeItem3 are the nodes in the tree and treeitem3 is a child of treeItem2 which is a child of treeItem1. Assume these treeItem(1,2,3) are referenced correctly from the collection items.

my problem is that if i wait for the whole component to load completely then select the nodes, it open/select/scrolltoIndex correctly. However, if i were to select the node right after the dataProvider is assigned, then it doesn't even open or select (basically the this.treeService.selectedItem is always null).

this.treeService.dataProvider = oPricingHelper.getCurrentPricingSercicesTreeSource();
this.treeService.expandItem(treeItem1, true);
this.treeService.expandItem(treeItem2, true);
this.treeService.selectedItem = treeItem3;
this.treeService.scrollToIndex(this.treeService.selectedIndex);

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ActionScript 3.0 :: Flex Delete A Tree Node Having A ArrayCollection As Data Provider

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I have a Flex tree with an ArrayCollection as data provider. The ArrayCollection is composed by objects linked eachother by the "children" field (that is an Array containing other children objects)

[Code]...

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ActionScript 3.0 :: Possible To Pass An Argument To The Function Triggered By An Event Handler?

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Ok, I have 2 buttons on the stage. Each button does almost the same thing, so I want to create a single function, and each button calls that same function (we'll name that function "Navigate")... however, the function will need to end up doing something different dependant on which button was clicked.So, previously, in AS2, I would've added some code onto the buttons themselves with on(release) methods, like so:

Code:
// Define the Navigate function
function Navigate(myLabel){

[code].....

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ActionScript 3.0 :: Pass An Argument To The Function Triggered By An Event Handler?

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Trying to migrate my way of thinking from AS2 to CS4/AS3. Ok, I have 2 buttons on the stage. Each button does almost the same thing, so I want to create a single function, and each button calls that same function (we'll name that function "Navigate")... however, the function will need to end up doing something different dependant on which button was clicked. So, previously, in AS2, I would've added some code onto the buttons themselves with on(release) methods (see CODE EXAMPLE 1) So, each button effectively calls the Navigate function, and passes a different frame label to the function. Now, I'm trying to recreate this functionality in AS3. As you all know, on(release) has been done away with (still don't know why), but we now have to use event handlers, so I'm trying to figure out a way to pass a different frame label argument to the Navigate function. Currently I can achieve that by using a switch statement to test which button was clicked, and act accordingly (see CODE EXAMPLE 2).

[Code]...

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I created a button that looks up the coordinates of the device. There is no errors in the code but for some reason which is eluding me, the event is not being triggered.

Here is my code:

protected function lblCheckIn_clickHandler(event:MouseEvent):void
{
if (Geolocation.isSupported)

[Code]....

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Flex :: Event Triggered On Component Re-render?

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What's the call analogous to creationComplete that happens every time a component is rendered? I want to rerun a function every time the component gets rendered (it has to make an HTTP request, but the url it calls changes each time) and I can't figure out how to do it.

For context:

<s:Group xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" width="100%" height="100%"

[Code].....

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