I have a basic Tree built in Flex. The Tree works fine. I'm attempting to get a list of all of the visible nodes. I know there is a Tree.openItems, but that does not suffice because (for example) if you open all the items in your tree and then close the root, the invisible opened items are still counted.
View 1 RepliesI have a tree with a dataprovider which takes the following form:
<details name="Cars">
<contact_person>aaaa</contact_person>
<list>
[Code].....
That is I want to hide the contact_person and list nodes.Deleting the nodes from the dataprovider cannot be done.So what i did was to create a custom tree data descriptor by extending DefaultDataDescriptor.Then override the getChildren method and applied a filterfunction to the collection returned by super.getChildren.The problem is when i hide the 'list' node I cannot have the child nodes to show up.So is there any way I can hide 'list' but show the children of 'node'?
For those unfamiliar with tree structures, tree structures are usually dynamic lists where every node has a pointer to two other nodes. They are arranged so it makes for faster searching and stuff and are very useful in programming languages that offer direct access to heap memory. Although I don't know if there would be benefits of making tree structures in AS would be of any help but I decided to have a go at it anyway. Since there are no pointers in flash I tried to just replace pointers to nodes with nodes themselves. Such things usually work in java I think because the language just automatically makes pointers for variables.
[Code]...
I need the Flex tree control by default open... where all nodes are visible.[code]...
View 3 RepliesHow do I get a Flex tree to display only specific XML nodes?
A sample of the XML data is below. Only the Grouper and Product elements should be displayed as branch and leaf nodes respectively; the Name elements should not be displayed. I can't use XSL or e4x to modify the XML as the Name elements' text is used as the label for the Grouper and Product tree nodes. Also, I cannot move the Name element to be an attribute as it needs to include a CDATA section.
It looks like using a custom TreeDataDescriptor is the way forward but I cannot find any examples of using one with XML.
<Grouper Type="ProductHeading" Id="" icon="drugIcon">
<Name>ASPAV</Name>
<Product Id="1002081" icon="genericIcon">
[Code].....
private function openAllNodes(event:TimerEvent):void {
//Alert.show(event.target.currentCount);
var index:int =event.target.currentCount - 1;
[Code]....
In my project I want to show the video like growing flex tree. So I tried flex timer based to expand node one by one. But if I open the first node then automatically close second time. If there is any other way to expand nodes one by one then let me know.
I'm having difficulty getting checkboxes on only the leaf nodes of a tree.Before anyone links it, I've seen [URL] and this isn't exactly what I need. I don't want a 3-state checkbox system including both branch and leaf.I understand applying the checkbox item renderer to a data grid but not on a tree.
View 1 RepliesI'm using the iconField property of the Flex Tree to dynamically set the icon that a node should use. This works fine for leaf nodes but for branch nodes it doesn't seem to respect my iconField and instead just shows the default folder node.
Here's a simple repro:
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
[Embed("assets/icon1.png")]
[Code].....
What happens is that icon2 shows for the East and West nodes but icon1 doesn't show for the Sales node. How can I get this to work?
I've spend hours searching for a way to put one paragraph of text in one tree node in Adobe flex. How can I do it? I created a simple tree view but the text is cut after the right border.
So I tried to create a tree renderer. In the renderer I specified width=100 and the text wrapped. But the height of the nodes was not being calculated properly, so the text over consecutive nodes overlapped and got messed.
So how do i do wrapped text in a tree node?
working with flex 4 and implementing filtering using ITreeDataDescriptor.Filtering worked as expected like the following code snippet however, i am trying to create a on-demand type of filter where user would type in the search clause in a TextInput, and as the user types, the tree nodes would be filtered on the fly.my implementation now is have user click on the search button and then reapply the dataDescriptor then reload the data. A big problem is that the whole tree collapses after setting the dataProvider again.any suggestion on how the on-demand filter can be achieved?
var dataFilter:ServicePricingFilter = new MyFilter();
dataFilter.searchString = this.txtSearchKeyword.text;
this.treeService.dataDescriptor = new MyDataDescriptor(dataFilter);
[code].....
Is there a way to enable dragging of only leaf nodes in a tree component?
View 1 RepliesI'm using a tree control that I want to customize. The data items in the tree's dataProvider have a property name that should be used for labeling the node, and a property type that should be used to select one of several embedded images for use as an icon. The simplest way to do this is by using the labelField and iconFunction properties.
However, I wanted to get started with item renderers and open the door for adding more complex customization later, so I tried making my own item renderer. I extended the TreeItemRenderer class as follows and used it in my tree control:
class DirectoryItemRenderer extends TreeItemRenderer
{
[Embed("assets/directory/DefaultIcon.png")]
private static var _DEFAULT_ICON:Class;
[Code]....
This code has no effect whatsoever, icon and label in the tree control remain at their defaults. Using trace(), I verified that my code is actually executed.
say I have an xmllist like this (but with many other attributes not shown for brevity):
<node metal="white gold"/>
<node metal="yellow gold"/>
<node metal="silver"/>
[code].....
I want to know if I can use a tree and when and item in the tree is clicked the viewstack changes to that certain item?
View 1 RepliesIs there a way display the display list in the Tree component. I could parse the display list into xml but then I would not be able to create a reference to the display object.
View 1 RepliesBy default, the iconFunction of List and Tree return only Class as the icon, which is for embeded images or iconUtility kindly provided by this site http:[url]...... It works very well with pre-created images.But what I really want is to accept a completely runtime generate sprite object, similar to what is done by Legend, with the color changes according to what the current status. I assume I could do something to make the ListBase to accept icon argument other than Class.
View 2 RepliesThis is my XML data in a file named nodesAndStuff.xml.
<?xml version="1.0" encoding="utf-8"?>
<root>
<node label="One" />[code].........
Now I have added my tree just below the list and I have saved counting from 10 to 19 in one.xml, 20 to 29 in two.xml and so on in different XML file. I have no clue how to connect the XML containing counting from 10 to 19 as the single node in tree at the selection of label one in list
I want to create a tree view (expandable list ) in flex 4.5 builder mobile,Is it possible for web projects in flex builder for web [URL]
View 1 RepliesI have:
an ArrayCollection of Numbers;
a List using the above ArrayCollection as it's dataprovider, and virtualLayout=true;
a custom ItemRenderer that shows a label with:
a) the number
b) an y position depending on the number AND the highest number visible
In another words, if I have 10 numbers in the AC, and only 5 appear on the screen, the y position of those 5 will depend on the value of the maximum number for those 5. When the user scrolls, of course those 5 elements change so the position of the label in item renderers will change.
1) How can I get the list of items that are "currently" visible?
2) Which event/method to override will help me know that the List was scrolled/the visible items changed?
I have a list inside a VDividedBox. When the box is resized so the vertical scrollbar shows on the list, it covers some of the itemrenderers. How do I get the list to resize horizontally so that the scrollbar does not cover the renderers?
View 1 RepliesThe problem is that a cannot acces the nodes in the tree using AS3 syntax. My guess is that the problem is nhe namespacing that is making it impossible. I have been sitting for hours trying to set namespaces or removing them, but i just cant get this to work. I can load the XML, but as soon as i try to walk down the tree i get no data output. Here is my actionscript so far:
var myNamespace:Namespace = new Namespace( "http://www.w3.org/2001/XMLSchema-instance" );
default xml namespace = myNamespace;
var xmlLoaderAvdelningar:URLLoader = new URLLoader();
[code].....
there is no way for me to acces one of the nodes in the tree and trace the data. To me the namespacing in the XML is very confusing, and i have no experience working with this kind of XML
whenever i try to select multiple nodes in tree component i'm getting this error. i want to know what might be the cause for this error.
[Code]...
I'm trying to make a Flex Tree Component display the children of a sprite in a hierarchical way. Moreover, dragging the items on the FlexTree would resort and reparent the items. I have special Elements set as Folders. This would allow other elements to be added there as a children by dragging an element on the tree and dropping it there. I have a failed attempt which works, but breaks when I try to add folders. Basically, it fails at reparenting the items by dragging and resorting folders and that Does anyone know of a component or something which can do this, has anyone have created any of this or could anyone give me a clue?
View 1 RepliesI have the following xml:
[Code]...
This code filters out "steps" and "array" successfully. However, if I uncomment the "preDialogues" code to try and filter out preDialogues, the question node gets skipped entirely. I can see why this happens, but what can I do about it? Its been awhile since I've done recursion. I thought I could return some sort of combined list, or something, but I can't get anything to work.
I am working on Air application,i had a problem on Tree control.Iam adding nodes for the tree dynamically, while adding nodes to the tree i am setting Tree.selectedItem as present added node. after that i need to fire Tree.itemClick event handler method also.how can i call event handler method as a common method. in Flex3
View 1 RepliesI'm creating a facebook application in flex. I'm actually working on the friends component that shows your friends who are using the application. now, each friend has a profile image.
I created the component using a s:List element.
In the Skin Class of the element i configured the requestedColumnCount to 3, which means it shows 3 friends. i added buttons to scroll left and right in the list.
Whenever I scroll to see a different friend, for a half of a second i see no image because the List component is loading the image in order to view it.
is there a way to make the list preload all the elements so i won't have this kind of problem ?
I do not know flash at all and i am writing some code in Action Script 3 and am having some trouble.
Basically i have a list that is read from an XML file.
I am busy writing a function to allow a user to enter a search word that will allow him/her to find the closest matching node.
For example, if the nodes are:
1) movies
2) music
3) books
4) plays
typing "m" will search and scroll through 1 and 2 continuosly after every button click but typing "mo" will find only 1.
Using mytree.findNode("label", search_word); //will only find nodes of EXACT name Using mytree.getNextIndexAtLetter(search_word, i); //Will only find nodes with starting letter of search word
I made a flash program that makes a list of nodes from xml. They go like this 1 2 3 4 5..How can i make them go like 5 4 3 2 1 ?
View 1 RepliesI'm looking for a way to list all XMLNode that have a certain attribute, in my case, the "link" attribute.So i do :
Code:
var list:XMLList = xml..@link;
for each(var i in list){
trace(i);
}
But this traces the value of the attribute and not the node containing the attribute... How to trace the node??
I have an accordion component that contains 3 list components and 2 tree components...there are all the components from the flash library of components...and I need to print the contents of these 5 "lists"For now I'm concentrating on the lists...then I will worry about how to print the trees with all the nodes expanded...but I can't seem to figure out how to determine how many items are in a list.
View 7 Replies