Flex :: Unable To Refresh Tree Control With New Branches From Successful RemoteObject Call
Feb 2, 2010
I'm trying to populate a mx:tree component with values that I'm getting from BlazeDS. The returned data from BlazeDS is fine it's an ArrayCollection of Folder value objects.I've been instructed to use Cairngorm for this project. I'm pretty new to Flex and Cairngorm. According to the limited documentation that I've read online I should populate the model with data so I've stuck the array collection there.What I'm stuck with is trying to update the tree component. I feel that I need some way to notify the container component for the tree that the data (i.e. the subfolders) is available on the model. I was hoping that it would be possible to fire a function in the container component to add the subfolders as children of the selected node (I could chuck this on the model before the remote object call I guess) then fire tree.invalidateList() and tree.validateNow(). Any ideas?
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Oct 1, 2009
In the code below when I call chkAuthentication function from another function the remoteObj.login (login function in my service file (.php)) is called after the remaining code in that function. i.e., the loginStatus is returned from the function before the result-handler function loginResult is called. but my loginStatus is supposed to be set in loginResult function. It seems that the asynchronous behaviour is the culprit. what should I do in order to get the loginResult function to complete first?
[Code]...
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Apr 7, 2011
Is it possible to abort a flex remoteObject call? I tried the below method but the http request is still loading in the background:[code]The thing I'm interested in is freeing up the browsers HTTP Pipeline, just like in javascript where you can use abort on the XHR.
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Apr 6, 2010
I have item renderers in an mx.controls.Tree that I need to refresh on demand.
I have code in the updateDisplayList that fires for only some of the visible nodes no matter what I do. I've tried triggering a change that they should all be listening for; I have tried clearing and resetting the dataProvider and the itemRenderer properties.
private function forceCategoryTreeRefresh(event : Event = null) : void
{
trace("forceCategoryTreeRefresh");
[Code]....
The nodes refresh properly when I scroll them into view (e.g. the .data gets set), but I cannot force the ones that already exist to refresh or reset themselves.
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Feb 27, 2012
I am using RemoteObjects to call ZendAMF PHP from Flex/Flash Builder 4.6. I want to stop or abort a method call before it sends the request to the server based on an event or similar.
I have a class where I create and store all the RemoteObjects - for example:
activityLogService = new RemoteObject("zend");
activityLogService.endpoint=endpointServer;
activityLogService.addEventListener(FaultEvent.FAULT,faultHandler);
Then later I can simply call this object:
remotingService.activityLogService .getRecords();
I am trying to find a way in my remotingService object to stop the request - and not send anything to the server - for example if some variables are not set properly.
I noticed there is an invoke event: activityLogService.addEventListener(InvokeEvent.INVOKE,invokeHandler);
However, I can not tell if that's going to stop things at the proper point, or if it's even possible to actually STOP the request - if so, how?
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Dec 8, 2006
im loading a XML tree whit scr="",, and using script
Code:
var my_pb:mx.controls.ProgressBar;
var my_ldr:mx.controls.Loader;
var my_tree:mx.controls.Tree;[code]...
the problem is that i only can load the scr, from e the first branch,, the other branches cant be pressed,,
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Sep 15, 2011
i wanna make a dynamic tree using a lazy loading ,each time i open a folder the tree sends a http request to the server, in this script i'm using just static text to test the tree but , i'm getting in the label of the root all the XML text assigned to the dataprovider, then when i open the root folder i got the childs with good labels , and openitem and closeitem events do not fire how could i make them
import flash.net.URLLoader;
import flash.net.URLRequest;
import flash.net.URLRequestMethod;
[code].....
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Aug 20, 2010
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 {
_selectedItem = Tree(e.currentTarget).selectedItem;
if(mainTree.dataDescriptor.isBranch(_selectedItem)) {[code].....
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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Apr 9, 2012
Im trying to populate a tree control with an external xml file brought in via arraycollection but i need to group the xml data to display in the tree Okay my external xml file is called parts.xml and it looks like this:
[Code]...
additionally what i intend is for the user to have huge tree of parts and they select a node at the partnumber level and drag an drop it on to a datagrid where all the other tags of the part gets displayed.
Ive tried and tried many things without any luck. even now im thinking maybe if i looped through the array-collection and created a new array just for the tree to get it to display the way i need it, then when the user dragged and drop a part onto the grid i would have code that would look for that part number in the original arraycollection and add it to a new array just for the datagrid... i still dont know how i would create that new array for the tree!! cause the xml data is grouped by partgroup and then grouped again by parttype before you get the individual part numbers
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Jan 20, 2010
I'm doing a drag and drop operation on a tree using some help from Adobe's quick Starts:[URL]
The code suggested is roughly this:
var dropTarget:Tree = Tree(evt.currentTarget);
var i:int = dropTarget.calculateDropIndex(evt);
myTree.selectedIndex = i;
[Code].....
EDIT: I forgot to post that my current workaround is setting the selectedIndex = -1 after I get my node:XML. I'm afraid that if something bogs on the processor the user may see it select then deselect.
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Mar 9, 2010
I have a tree control and I want to give the user the ability that he can move up and down the element he just selected with a up and a downbutton. The tree gets generated from XML. I managed to insert the selected item a second time at a other place, with the following code:
var parentXML:XML = XML(containerTree.selectedItem).parent();
var upperItem:XML = topContainer.source[containerTree.selectedIndex-1];
parentXML.insertChildBefore(upperItem,XML(containerTree.selectedItem));
but then I have the item there twice in the List. How can I remove to reinsert it?
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Jan 27, 2010
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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Jul 14, 2010
Does anyone know of a way to specify different vertical gaps between siblings in a Tree? I want to child nodes spaced tighter together (maybe 10px) while the top level parents remain spaced further apart (20px). Essentially, I need to change the gap dynamically based upon the depth of the node, but I'm not sure if the Tree class (or the List class, which Tree extends) offers this type of functionality.
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Aug 8, 2010
I am having some trouble with the flex Tree control.I have a control in my system and of course it is data driven.I have a group which shows a folder icon and that's fine but it also shows an expand icon when the item has no children.I don't what it to show the expand icon when the group has no children but I do want to show the folder icon, because it is different entities in my system.
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Sep 24, 2010
I've created an mxml page that displays a tree control, however the data is only being displayed as branches. Even items that are leaves are being displayed as branches.
<mx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
public function init():void {
var item:Object;
var array:Array = new Array();
[Code] .....
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Nov 4, 2009
I'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.
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Dec 9, 2009
just facing a difficulty with tree control drag drop..Suppose i have tree with drag-drop enabled.I want to which node(id) is droped inside which node. 1]if i drag "Cat1" node inside "Cat3",i want to identify ids of siblings of "cat1",and "cat3".2]in general i want to know the ids of current element being moved along withits new parent and new position and save these postions.3] Also "cat4" when moved outside "cat3",i want know its position and its siblings id.
<mx:XML id="treeDP">
<node label="Categories">
<node label="Cat1" id="1" isBranch="true"/>
[code].....
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Mar 4, 2010
I'm trying to modifty the Flex Tree control to allow a user to select multiple items by just clicking each of the desired elements (ie I don't want them to have to press Ctrl or Shift). If the user clicks a selected item a 2nd time, it will deselect it.
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Jan 17, 2010
I have a Tree Control inside my Flex Application which I want to edit on a doubleclick on a tree item. I found the properties doubleClickEnabled= "true", doubleClick="startEditMode()", and editable="true". With these functions I can detect a double click and I can change the editable property to true based on a double click. The problem is that after I double clicked on a Item i have to click once more to really enter the edit mode. That doesn't seem to be intuitive at all..
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Nov 19, 2011
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?
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May 6, 2010
I am looking to subclass RemoteObject. Instead of:
<mx:RemoteObject ... >
<mx:method ... />
<mx:method ... />
[code].....
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Oct 30, 2009
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
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Nov 24, 2009
I have a toggle to mute and unmute sound in this movie. If sound is on and refresh with SharedObject sound plays again. Also I can toggle between the sound before refresh. The issue: when selecting mute then refresh, the movie plays back muted but the ability to un-mute is no longer available (at least not before another refresh).
Problem: toggle to mute then refresh of browser. Mute is fine but no ability to toggle back to sound.
Code:
var my_snd_obj:Sound = new Sound();
my_snd_obj.start(0,1);
my_snd_obj.attachSound("my_audio");
[Code]....
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Nov 4, 2010
I want to use XMLRPC mechanism between my Flex app and my XMLRPC Python Server.
My server :
class ServerMockUp(SimpleXMLRPCRequestHandler):
# Services path declaration
rpc_paths = ()
myServer = SimpleXMLRPCServer(("localhost", 80),
[Code]...
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Dec 27, 2006
is it possible to control refresh button of browser? i want browser to open current frame of flash movie without starting the whole flash movie from first frame. I know that previous and next buttons on browsers can open previously opened frames of flash.
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Mar 16, 2011
im trying to output my database information in a text input field in flex by using remoteObject(cfc). The information is being provided by a database using a query and an array collection. I'm just unsure how i go about taking the queried array collection information and display it into TextInput Fields.
[Code]...
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Mar 31, 2010
I have a remoteobject within my main.mxml.I can call a function on the service from an init() function on my main.mxml, and my java debugger triggers a breakpoint.When I move the remoteobject declaration and function call into a custom component (that is declared within main.mxml), the remote function on java-side no longer gets called, no breakpoints triggered, no errors, silence.[code]
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Sep 13, 2011
Im trying to make connection from flex to java and from java to mysql. I managed to connect to java, but having error that class not found: com.mysql.jdbc.Driver. But i downloaded mysql.jar, included it added to library, and connection works when i testing it from clipse scrapbook. Dont know what to do, i spend last couple days on this.
Class.forName("com.mysql.jdbc.Driver");
String username = "username";
String password = "password";
[code]....
Basically the solution was simple. Everybody keeps saying to put jar into lib folder, so i done it, but i wasnt realised that i have to put into my servers lib directory, not app lib directory and this miserable mistake cost so much. Anyway i hope this will help for some newbie like me.In this particular situation im using red5, so i putted it into my red5 dist/lib directory and "surprisingly" its started to work.
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Nov 5, 2011
(This is the first time I've done this actually.)
<mx:HTTPService id="post_update" method="POST" result="{Dumper.info('bye')}"/>
The result handler above is just for debugging purposes, but its never hit, even though what I'm uploading via POST..
[Code]...
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Jun 3, 2008
I have an tree component that is populated via XML. There are branch nodes and child nodes for each branch. This is a user interface for an elearning course. The branch nodes/folders in the tree component are for course sections and the child/leaf nodes for each are the content topics. each have a url attribute with a path to the appropriate content swf. The branch nodes/folders in the tree component do nothing when they are clicked on, as intended.
I also have previous/next buttons. They basically just navigate between leaf nodes. However, if the currently playing topic/leaf node is the first underneath a branch/folder, and I click on the 'previous' button, nothing happens. How can I set this thing to 'skip over' branch nodes? Here is the relevant code (the tree change listener, and the previous/next button event handlers:
Code:
var treeClickListener:Object = new Object();
treeClickListener.change = function() {
var item = menu_ctr.selectedItem;
[Code].....
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