Actionscript 3 :: Flex Bind Values In A List With ComboBox As Item Renderer
Apr 26, 2010
I am using a List with an ArrayCollection as a DataProvider. The list uses ComboBox as Item Renderer itemRenderer="mx.controls.CheckBox"I would like to bind the values in the List.You have a list with several comboboxes, and those values are loaded dynamically from an ArrayCollection.The ArrayCollection contains Objects with a boolean property for which I should bind the True/False values selected in the comboboxes.
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Jun 10, 2011
I'm creating a mobile app in which I need to show a calendar with months at the top. The months are part of a component that extends from SkinnableDataContainer (and has some custom scrolling/behaviour - which is why I did'nt use a spark list). I need the months to be shown as a 'trapezium' shaped tab and so I'm using a png image as a mask in the item renderer for the component.
When the mask is not applied, it all works well - the months render, the list/data container selection works when I click on a month and so on.When the mask is applied, it renders well, scrolling and everything else seems to work well - but when I click on a month, nothing happens visually. And from the trace statements in my code, it appears list item selection is not changing. Looks like mouse clicks are not working.
Code:
public class TopCalendarMonthRenderer extends LabelItemRenderer {
[Embed(source="/assets/trapezium_alpha.png")]
private static var TrapeziumMask:Class;
private static var trapeziumMaskInstance:BitmapAsset;
[code]...
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Nov 29, 2010
How do I wordwrap in a spark list w/ an itemrenderer? This posting at[URL] works 100% but when I try to set a separate item renderer, I can't get the word wrapping...instead, I get an ugly horizontal scroll bar. HEre is my mxml:
[Code].....
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Oct 19, 2010
I have a custom component as an item renderer.In this renderer there is an item called dlFirstChoice.Now when I add more items to this list and force the list to rebuild itself something odd happens.Part of the creation of the renderer I set a default selection for the DropDownlist as follows: dlFirstChoice.selectedIndex=0The problem is once I have more than one item to render from my dataset this property stops working. So if my dataset has only 1 item to render the drop downlist sets itseld up properly, the momment I need to render more than 1 copy of my item renderer, all of a sudden nothing gets set fo
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Oct 20, 2009
I have a List and the item renderer displays an image. Whenever you scroll the list, and the item renderer refreshes, it redownloads the image. Causing there to always be a delay. Is there some way of caching it so it doesn't have to redownload every time causing a delay in showing the image every time you scroll the list?
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Oct 26, 2010
I have a Flex Spark List (well it's a Tree to be precise but it renders as a list) and as I'm scrolling through it I want to provide information about the item that is currently at the top of the list in context to the viewport. So this could be the 100th item in the list depending on how far you've scrolled down.
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May 20, 2011
I have found something good here. [URL]..The mouseover effect on the list item is good. Any ideas to make this look.. I can infer that this is happening on mouseover of the Image Component. I think this is similar to google image search preview of images. If anyone have come across a component similar to this kindly share it to me and to all.
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Jan 20, 2010
We have a requirement to show a list of appointment slots. So every hour of a schedule has a set of 10 min slots. The requirement is that if we click on a arrow button at the 8:00, 9:00 hour slot, the layout of the hour slots should change from a vertical list to a horizontal list.For this we modeled the system as follows:ScheduleComponent ->(contains) -> List (Hours of schedule)The HourViewComponent is an Item Renderer, that displays the 10 mins slots based on the available appointments by using a Slots List (list of slots in the 8:00 hour). For the Slots List we have a Slot View Component as an Item Renderer.Now the issue is that when we click on the 8:00 slot we are able to change the HourViewSlot from a VerticalState to a Horizontal state. But The container height is not collapsing in the minimized state. It occupies the same size as the vertical layout! We tried using variableRowHeight attribute.
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Mar 28, 2011
I'm trying to create a list with icons. There're a lot of examples but seems all of them are using embedded images.My problem is how can I create the list with icon from base64 png string at runtime?
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Apr 12, 2011
In a flex application how to display default selecteditem from the dataprovider of the combobox.
I'm using {staticdataholder.currencylist}.
For example: I have to show INDIA so it should be selected as default from the list.
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Mar 4, 2011
<mx:itemRenderer>
<mx:Component>
<mx:Canvas>
[code]......
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Mar 30, 2011
Because of screen size, I must ensure we're only displaying necessary data to the user.I have a drop down box that contains only 5 items and I would like that when an item is selected, it doesn't appear in the drop down box (since technically it's showing twice, once at the top as the selected item and once in the list). how I would achieve this? I tried using a custom CellRender and overriding the "set selected" function to call this.visible = false if selected is true, but that simply hides the item but does not remove it from the layout of the drop down list.
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Aug 15, 2010
I have an editable combobox. How can I bind the text the user enters? I can only do binding when the user selects whatever it is they typed in...how can I bind it as they type?
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Mar 16, 2011
How can I validate there's a selected item in a ComboBox before saving? If there's no selected item, how can I set focus on the ComboBox?
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Sep 8, 2010
I have a Datagroup with a custom item renderer the momment I bind it to XML from an http service it stops working.
[Code]...
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Jun 15, 2009
I am trying to bind a datagrid item to a combox, so that when the user selects the item in the datagrid the form displays the selected data for editing, however one of my items is a combobox using a dataprovider.
I would like the item selected in the datagrid to match the selected item in the combobox, this part is fine however if my datagrid item is null then I cannot get the combox to set the selected index to -1?(the same happens if you use the CRUD wizard in Flex builder 3 for ColdFusion)I am using the following code for my custom combobox:
<mx:ComboBox
xmlns:mx="http://www.adobe.com/2006/mxml"
xmlns="*"
creationComplete="componentInit()"
[code].....
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Nov 25, 2009
I would like to populate a combobox from XML file in Flash. Then, when a list item of combobox is pressed then thumbnail image of that particular category is being loaded in a movieclip from XML file.
I spent a hard time to achieve this, but there is no success.
I used this code so far to accomplish this task.
Code:
var myXML = new XML();
myXML.ignoreWhite = true;
myXML.onLoad = function(loaded){
[Code]....
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Nov 24, 2009
I'd like to have an overlay that draws lines between selected items in different Flex 4 List controls.
The problem is I can't figure out how to access the x, y coordinates of the list's item renderers.
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Jul 20, 2010
my renderer contains a canvas in it, i add some title-window, every time i see my tree previously added Title-Windows are visible, i want to access each n every item in tree and remove previosly added all windows from the rendere. how access all the item renderer in AS3 ?
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May 9, 2011
I have an mx:tree with with TreeItemRenderer as below.
Parent1 (Delete | Rename)
Child1
Child2
Parent2 (Delete | Rename)
Child3
Child4
Delete and Rename are link buttons
Now when i click Rename a popUp should be shown like
OldName : Parent1(Text Input showning present Name)
Enter New Name: Parent1NewName(Text Input for entering New name)
OK | CANCEL Buttons
Afetr Entering the new name,click OK,popup should be closed and need to get the value in the treeItemRenderer.
I have the logic to rename the Parent1 in TreeItemRenderer and also I m able to get the Parent1 in the popup OldName TextInput.But after entering the new name i m not able to get that new name in the TreeItemRenderer.
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Jun 16, 2011
I use a spark List with a custom item renderer and an ArrayCollection for dataProvider.
The ItemRenderer looks something like
<mx:TextInput id="txtValue1" text="{data.myFirstValue}"/>
<mx:TextInput id="txtValue2" text="{data.mySecondValue}"/>
However, even though I change the text in txtValue1 or txtValue2, those are not actually changed in the object inside the ArrayCollection.
myFirstValue and mySecondValue are decorated with the [Bindable] tag.
My understanding is that if the text property is set to be bound a certain property, the changes should be automatically applied.
So the HACK (or so I think) that I use is to listen to the focusOut event of each textbox, and access the parent data provider and set the the values manually.
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Aug 5, 2011
Is it a bad idea to inject data into an itemrenderer. The reason I ask this is because the state of each item is dependent on different changing data sources. So the original data is used to just display a new item, but there could be two to three other data collections that would be needed to determine the item's behavior. Is there a better way to do this? Should I be creating a custom DataGroup with the other data sources as properties on this custom container and then reference the data sources from the itemrenderer to the parent?
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Dec 7, 2011
ow do you display HTML formatted text in a Spark custom item renderer (Actionscript)?
Sample Code:
The html content in item.post_content displays as plain text in the IconItemRenderer messageFunction snippet below (which is just the default generated code for Icon Item renderer):
<s:itemRenderer>
<fx:Component>
<s:IconItemRenderer iconField="iconField"
iconWidth="64" iconHeight="64" labelField="post_title" messageFunction="getPost">
[code]...
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Jul 25, 2009
I have made the following item renderer in mxml, but when I use it in a list for some reason I can not select it. Am I doing something wrong?
<mx:HBox xmlns:mx="http://www.adobe.com/2006/mxml"
horizontalScrollPolicy="off">
<mx:Script>
[code]......
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Aug 15, 2009
I have a HorizontalList that is resized at runtime. The problem is that the items are not adjusting their height to the height of the HorizontalList. I use an item renderer (vBox) which has its height set to 100%. But the items always stay at their initial size.
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Sep 1, 2009
Within a DataGrid, I have a DataGridColumn that uses a custom component as the item renderer. Within the component, I have an ArrayCollection that stores a set of value objects. My problem is that I cannot access the ArrayCollection values from outside of the item renderer component. Does anyone know how it would be possible to do this? I have posted a code snippet below.
<mx:Script>
<![CDATA[
// Cannot access arrFiles from here.
[code].....
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Apr 30, 2010
I'm trying to create a Flex DataGrid where the firstname and lastname are shown under each other, but in the DataGridColumn
Ideally I would want to do something like
<mx:columns>
<mx:DataGridColumn headerText="Column 2" dataField="time"/>
<mx:DataGridColumn headerText="Column 2" dataField="firstname,lastname" itemRenderer="renderers.FirstNameLastName"/>
so that both values get passed to the itemrenderer, is this possible?
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Jun 17, 2010
I have a Renderer:
<?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" [code].............
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Feb 27, 2011
I have a problem in my datagrid itemeditor This is my data grid component
<mx:DataGrid id="lessonPlanDataGrid" x="10" y="10" dataProvider="{studentLessonPlanArray}" height="271" width="270" editable="true">
[Code]...
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May 30, 2011
Is there a way to prevent recycling of item rendered with Spark components on Flex 4.5 ? It might sound ridiculous, but actually this would do the trick until i understand a bit more the rendering life-cycle
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