ActionScript 3.0 :: Flex Access Attribute Values Via Variable Name?
Feb 2, 2009
I have a flex app where I need to be able to access and modify component attributes using variable names.
eg, say I want to edit the text attributes of text label.
I am not sure what object or attribute will need to be updated until runtime.
Say I get passed the following variables:
var objId:String = "label1";
var objAtt:String = "text";
var objVal:String = "Hello World";
I need to take these and update the "text" property of label that has the ID "label1" to "Hello World".
I have tried different variations to accomplish this but am stuck One example is
this[objId][objAtt] = objVal;
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Aug 1, 2011
Using e4x in flex:
var attr : String = "foo";
var xml : XML =
<resultSet>
<node foo="1"/>
</resultSet>;
How can I use the variable "attr" to access
xml.node.@foo
I thought I could do it with
xml.node.@[attr]
But this doesn't seem to work. How can I access this attribute by a dynamic value like this?
Both
xml.node.@[attr];
and
xml.node.attribute(attr);
work, as Constantiner suggested.
Updates:
Say I have an XMLList in this form:
var bar:XML =
<resultSet>
<node>value</node>
</resultSet>;
I want to filter the original xml above by matching "foo" attributes with the "value" from node in bar.
Essentially I want a sublist of the original xml such that
xml.node.@foo == bar.value
for each xml row in the original value
As Constantiner mentioned, I can filter the original list by the value in foo, but what if I want to filter on multiple values?
Can I do something like:
xml.node.(bar.node.contains(attribute(foo)) ? attribute(foo) : null);
Or perhaps a cleaner method instead of the null?
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May 6, 2010
I'm using a custom component CheckBoxList DataGrid (http://blogs.adobe.com/aharui/2008/02/checkbox_selection_in_datagrid.html) and as dataProvider I have an ArrayCollection with items such this one:
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Jun 16, 2009
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Jan 6, 2011
If I execute the code below in FlashBuilder, I get the following error (I translate it) TypeError: Error #1009: Access to an Attribute or Method of an null-Object is not possible. at components::NumDisplay()[srccomponentsNumDisplay.mxml:39] This line in NumDisplay.mxml is the problem:
[Code]....
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Oct 20, 2010
It's too complicate to explain but I'll give you an example
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Jun 17, 2007
I have this XML file:
<?xml version="1.0" encoding="utf-8"?>
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[Code].....
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Oct 12, 2011
How to find the attribute values ("0_0_0_1" ) in the following xml example.Example:
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Jul 20, 2009
I'm trying to match some events on stage to certain info from an XML doc.
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Is there anyway I can compare the current target value (that is whatever my mouse clicked) and search for the proper attribute in XML dynamically?
var _current:String = e.currentTarget.name;
if (_current == ANY OF THESE XML ATTRIBUTE VALUES) {
PULL THE CONTENT FROM THAT NODE;
} else {
Do something else;
}
The thing for me is making this process dynamic.
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Mar 27, 2011
Is there a way to parse a single XML attribute into an array?
Something like
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</images>
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Oct 26, 2006
Using the XML below as an example, how would I list all the available countries, but without duplicates. Same for the "industry" attribute. I'm using MX 2004, btw.
[Code]....
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Mar 8, 2010
I'm having hard time reaching the right nodes here. The XML structure is like this:
HTML Code:
<map>
<y>
<rs>
[Code]....
I'm trying to return a list of names for countries that contain company nodes with t value of f, so here are some of my attempts. None of them work.
Code:
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_xml.y.rs.r.cs.c.(child("is").(i.@t == "f")).@n
_xml.y.rs.r.cs.c.(child("is").i.(@t == "f")).@n
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Jun 24, 2011
I want to use the Event metadata tags to show what types of event my control will dispatch. The syntax looks like:
<fx:Metadata>
[Event(name="eventName", type="MyEvent")]
</fx:Metadata>
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public class MyEvent extends Event
{
public static const EVENT_NAME:String = "eventName";
// Other stuff..
}
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Jul 19, 2011
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Aug 17, 2009
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Aug 19, 2009
I have the following XML
[Code]...
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[Code]...
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May 14, 2011
I'm using to gather information from a RSS feed (I'm interested in the src content to display an image)
[Code]...
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Suppose I have an xml looking like this?
Code:
var emp:XML =
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Jan 28, 2010
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Dec 16, 2008
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[AS]
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[/AS]
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[AS]
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[/AS]
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Code:
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Oct 14, 2009
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Now the question:
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Aug 17, 2009
How would I get the name of the attribute/varialbe at runtime? For example if I have a variable defined like
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Jul 18, 2010
I have a main application which has an int variable declared. I want to access this variable in another component which is present in another package. How can I do this?Main.mxml (default package)
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
[code].....
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Apr 4, 2012
I have a flex 3 project with a root mx:Application. The width and the height are set to pct values, because the application has several sizes that can be chosen by the user, so the correct size is set on the embed's width attribute.
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Aug 23, 2007
I need to pass the value of a attribute to a _global variable that can be accessed somewhere else in the movie.But it traces as undefined outside of onLoad.
eg.FRAME ONE
ActionScript Code:
var xml:XML = new XML();
xml.ignoreWhite = true;
[Code].....
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Sep 18, 2010
I have a public variable set within fx:Script tags in a parent component that I'd like to access directly from a child component. How can I do this? I don't want to pass the variable to the child component (I know how to do this and am currently using this approach). Following is a simplified version of the mxml:
Note: SimpleComp is an HBox with a couple of lists.
<mx:Accordion>
<comp:SimpleComp/>
</mx:Accordion>
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May 12, 2010
I'm working on a stand-alone application and NOT a web-based application, so I'm trying to do this strictly with AS3, if possible. For example, if I have an XML file that looks like this:
Code:
<profile>
<username>Joe</username>
<password>Smith</password>
</profile>
How do I change the value of the USERNAME attribute via AS3?
I've tried something like this already:
var xmlData:XML();
...
xmlData = XML(event.target.data);
xmlData.profile.username = "Mary";
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Aug 30, 2005
Is it possible?!Here is an example:
for (var i:Number = 1; i<nTest; i++) {
var test + i..
}
[code].....
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May 13, 2009
I am having trouble parsing some xml that has a few attribute names with : characters in them. The compiler is not throwing any errors and when I trace my complete xml object out it is all there, however when I try to trace out any element or node it keeps comming up undefined. I removed the attribute names with : characters in them and everything works fine. I cant seem to target the attributes either to delete them.
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