Actionscript 3 :: Flex Databinding With SelectedItem Property Of The Combobox Update Many Times?
May 22, 2008
well, I have a combobox which I have bind his selectedItem property to a value object object, like this
<fx:Binding source="styles_cb.selectedItem.toString()" destination="_uniform.style"/>
<fx:Declarations>
<fx:XML id="config_xml" xmlns="" source="config.xml" />
[code].....
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Jan 23, 2010
well, I have a combobox which I have bind his selectedItem property to a value object object, like this
<fx:Binding source="styles_cb.selectedItem.toString()" destination="_uniform.style"/>
<fx:Declarations>
<fx:XML id="config_xml" xmlns="" source="config.xml" />
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<mx:ComboBox x="66.15" y="63.85" editable="false" id="styles_cb" dataProvider="{config_xml.styles.style}" />
the value object is a custom class with some setters and getters, and I want to set a property based of the value of the selectedItem of the combo, so inside the value object I have something like this
[Bindable]
public function set style(value:String):void
{
_style = value;
trace(value);
}
my problem is that each time I change the combobox selection which in fact change the style property of the value object it does it 3 times, if I trace the value of the setter it actually do the trace 3 times, why?? how can I avoid this? I'm doing something wrong? or there is a better way to do it,
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Dec 26, 2010
I have two dataProvider's for one DropDownList. The following code can be compiled and run.
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
[code].....
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Oct 15, 2009
i am working in Air application in Flex3 , i need know how to set "selectedItem" Property when we have 2 values like(data and label) label property to combobox selection, data value for our input.In (selectedItem="{stylename}") stylename will have "data" value but i need to set that "lable" property as selected value in combobox.Like if stylename is "checked" then the ComboBox selected item need to be "Checked".How to implement this in flex.
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Nov 13, 2008
I've got a combobox, cb, for which I need to programmatically set the selection. The combobox was populated by:
cd.addItem({data:"string1",label:"string1"});
cd.addItem({data:"string2",label:"string2"});
cd.addItem({data:"string3",label:"string3"});
Lets say I need to set the combobox to "string2",I've tried all of the following, none work:
cb.selectedItem("string2");
cb.selectedItem(data:"string2");
cb.selectedItem(label:"string2");
cb.selectedItem({data:"string2",label:"string2"});
The docs say selectedItem() is read/write but all the examples I can find are read only.
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Mar 20, 2012
I've created a number of MC's dynamically. Inside each MC, there are 4 comboBoxes. I'm trying to access the selectedItem.label from code.When I However, when trying to access from code on the timeline, I can't get the value e.g.trace("=======================" + my_FC_row.getChildAt(4)); // Value is ComboBoxIf I trytrace("=======================" + my_FC_row.getChildAt(4).selectedItem.label);
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Mar 16, 2005
Ok I can't find any doco on this and it's driving me crazy. Anyone know how you specify the default value for the V2 ComboBox component based on the selectedItem when you don't know the selectedIndex? Here's my scenario:
I have a hardcoded combobox called "dd_names" with 50 names in it. I'm returning a dataset into Flash via a SQL query, and onload I need the dd_names dropdown to default to the value of the name returned in the dataset. So if the query returns "Tom" I need the dropdown to default to "Tom."
I tried setting dd_names.selectedItem = "Tom" and dd_names.value = "Tom" and these don't work. The ComboBox just defaults to the first item in the list.However, if I use the selectedIndex property and set dd_names.selectedIndex = 3, the ComboxBox doesn't default to the first item in the list but shows the appropriate item. This doesn't help because I don't know the selectedIndex being returned from the query - I only know the selectedItem. Anyone know how to do this??
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Jan 15, 2011
I'm trying to update a combobox/datagrid sorter that came from flex3 to a flex4 version but I keep getting an error that my newbie brain is not processing. The error is "1067: Implicit coercion of a value of type Array to an unrelated type mx.collections:IList."
[Code]...
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Dec 5, 2009
i have online game and i have to know how to do this easy thing i have inventory and under things like first aid is number of objects and its combobox and after change i want to change variable kolko[i] to equals combobox name : "co"+i and that selecteditem data , i have this
[Code]...
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Oct 12, 2009
I am kind of puzzled and not sure how to tackle this issue: Got two comboxes with dataproviders. Also, I created a separate index.as in /as folder. I have these two functions:
In my .mxml page, I have :
<mx:FormItem label="Property Code:" id="fi_propertyCode" width="100%">
<mx:ComboBox id="propertyCode" width="50%" dataProvider="{qry_communites}" change="showPropertyCode()" />
</mx:FormItem>
<mx:FormItem label="Utility Type:" id="fi_utilityType" width="100%">
[Code] .....
I get an error saying
Access of undefined property utilityType.
The funny thing is I don't get this error for "propertyCode". Moreover, If I copy pasyte showUtilityType() function and put inside my .mxml page, I don't get this error either. Btw. I have :
....
In my .mxml page. What should I do? How can I get rid of this error? Why does Flex see propertyCode combobox but not utilityType combobox? I would rather keep index.as as it is.
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Jun 15, 2011
Here is my code:
<mx:ComboBox prompt="" editable="true" dataProvider="{tableSelector.list}"/>
When this code executes, flex just sets the selectedIndex to 0 and displays the first item in the dataProvider instead of leaving the text and prompt as the empty string "". How do I get around this? I need the text property to be "" unless the user selects another item in the combobox.
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Mar 18, 2011
I have a prompt string to be displayed in my combobox - this needs to be displayed in italics. When user makes any selection from the list - i need to change the style of the displayed content.
My css file:
.promptStyle
{
fontStyle: italic;[code].....
I am able to see the style change happening because the color changes; but the change specific to textInputStyleName does not get applied.
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Jul 20, 2011
I am using the combocheck example from the following site: [URL]
It's a very useful component and works very well.
Now, I need to set the text property of this combo box upon application startup with certain values (which are defined dynamically according to some criteria). The problem is that although I have no problem setting the text property of the combo box at other times of the application run, setting the property at startup seems to have no effect unfortunately.
For example, I want to set the text property of the combobox to "Bob" (which is one of the items in the dataprovider for the combobox) and the "set text" method is called on the combo box. Performing a step-through shows that the "set text" method is receiving the correct value item but not setting the _text property.
I have tried not doing anything until "ApplicationComplete" but no joy there either.
Here is the code (a combination of the code from the URL above and some other changes to it). However, as I've stated above, the codes does work. The problem is that it doesn't work at the application startup. Whenever an event is fired and setComboText is called as a result, the text of the combo box is set correctly.
private function onComboChecked(event:ComboCheckEvent):void {
var obj:Object=event.obj;
var index:int=selectedItems.getItemIndex(obj);
[Code]....
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Nov 23, 2010
I have created a custom component - MyImage - that has two children including a Bitmap as well as a Sprite.My display object hierarchy is as follows -
mx:Canvas
view:MyImage
mx:Bitmap
[code].....
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Jan 29, 2005
I am making a site for a tattooist and they need to update the gallery of tattoo images (jpg) about 4 or 6 times a year. I am making it in flash mx.I thought back to things i'd heard about and came to the conclusion that xml might be the best way with this - so the client can open a text file and change the image name and then upload the image as needed to the server.
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Mar 14, 2011
I have a small question. I am probably misunderstanding something, but when I do :
[Code]....
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Aug 14, 2010
When the Flex SDK converts MXML to actionscript it generates a lot of databinding code. I don't want to bind a variable, for example if I know the variable will not change.
I can't seem to find a work around in Flex to disable the autogenerated databinding. Also, I was hoping this might also help with some of the runtime warnings thrown by databinding. To get around them, I sometimes use the following, which only throws syntax warnings (and don't appear in my console at runtime).
Syntax warning: Data binding will not be able to detect changes when using square bracket operator.
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Mar 5, 2012
the new TextInput component which uses stagetext on 4.6 has this issue where if you bind a variable on it e.g
view1...
and i push a new view e.g view2, and pop it, hence reloading view1. on initial load, I can see that the textinput display the variable abruptly then the text vanishes afterwards..
I'd like to note that the variable is a stored data, and can be access on any view.
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Nov 6, 2010
I'am trying to create a Flex Application where users can select courses from a combo box based on the department that offers the course. The combo box has an XML variable as its data provider and has the different departments listed. When a user selects the department from the combo box the courses offered for that department should automatically update (show up) in the data grid under their respective columns. What it needs to do is retrieve the XML for the selected department and then set the data provider for the srcgrid accordingly. I am having a lot of trouble with things displaying correctly in the data grid. The course should be under Course ID, course name under Name, etc...
HTML Code:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
[Code]....
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Jun 14, 2010
The help page on the BindUtils.bindProperty function:url...Has this to say:"For example, to bind the property host.a.b.c, call the method as: bindProperty(host, ["a","b","c"], ...)." But what if I need to bind to host.a.b[2].c? How do I do that?
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Sep 28, 2010
I have an arrayCollection with strings in them, is there some way I can databind a RadioButtonGroup to the array collection? As we can do for combo boxes [code]There is no RadioButtonGroup.dataprovider property.
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Jun 6, 2010
I need to dynamically bind properties of components created at runtime. In this particular case please assume I need to use bindProperty. I don't quite understand why the following simplistic test is failing (see code). When I click the button, the label text does not change. I realize that there are simpler ways to go about this particular example using traditional non-dynamic binding, but I need to understand it in terms of using bindProperty.
[Code]...
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May 27, 2009
I have creating a distributed note taking application in flex, it basically is a notepad I can keep in my desktop tray. When I add notes and goes back to a server and saves it in a database.
To am struggling to design the application correctly, I want to have a Syncing service that polls the webserver for changes and updates an Array of Note objects. The problem is that my note corresponds mxml component, aka SingleNote component. There are four different cases when being, a. a note is updated from the server poll, in that case I want to singlenote to update the settings b. a note is added to the array from the server, in that case a new SingleNote needs to be created c. a SingleNote is added from client, in that case a Note is added to array, and sent back to server d. a SingleNote is change from client, in that case the Note is updated in the array and sent back to server
The properties are SingleNote(Width, X, Y, Text).
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Sep 10, 2011
I am making some simple project and I have problem with selectedItem. I have sth like this
<s:State name="Form" enterState="makesService.send()"/>
so when I enter this state I take makes from database and populate them to dropdownlist.
but I have also button and on click event I'm changing state to this Form and I want to select specific make from the dropdownlist but I can't. I'm not sure whether I'm doing sth wrong or the problem is that I'm selecting item just before the dropdownlist became populated.
e.x. List of make consist of Audi and BMW and when I click button I want to open this state Form in which this dropdownlist exist with selected value e.x. BMW.
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Sep 3, 2009
I'm trying to set up a form that presents a combobox when an ArrayCollection it's bound to has several items, and doesn't present one when it's empty or only has one item. I've tried doing this by creating this class, but unfortunately, the data provider I've bound to is never not empty at the time the setter executes.
public class ComboboxOrFail extends ComboBox
{
public function ComboboxOrFail()
{
[code]....
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Mar 17, 2010
I am creating a lot of dynamic flex components like RadioButton, Combo Box, CheckBox.
[Code]....
When i click on Submit finally i need to get all the selected Values in each question. All the components are dynamically created at runtime.
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Oct 22, 2010
When I change the: list.selectedItem.name = 'name2'
then in my item renderer
the dataChange event is not fired! and I can't update the label with the name property...
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Jan 26, 2011
Main Thread (Suspended: ReferenceError: Error #1081: Property @data not found on Object and there is no default value.) [code]...
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Feb 15, 2011
I have encountered somthing a little strange in flex, possibly somthing im doing wrong but im not sure. In two cases which i have noticed, when there is only 1 item in a s:List or s:DropDownList for some reason when using list.selectedItem it appears as null. Using requireSelection="true"i know this isnt the case.
[code]...
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Aug 5, 2011
Here's the situation: I have a populated datagrid and I want to move a form to be inline (same y position) with the datagrid's selectedItem. I cannot rely on a mouseClick event because the selected item may change with a keyboard event. The datagrid does not have an itemRenderer, just plain old dataField.Anyone done this before?
Here's some stubbed out example code for all those interested based on Jacob's answer.
[Code]...
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