Embed image with a String variable which contains a filename

Question

Hello!

I try to embed images in a mx:tree:

<mx:Tree labelField="name" id="tree" 
    folderOpenIcon="@Embed(source='assets/images/test.png')"
    folderClosedIcon="@Embed(source='assets/images/test.png')"
    defaultLeafIcon="@Embed(source='assets/images/test.png')">
</mx:Tree>

This works fine, but I will embed the images with a String variable.

I have a variable and a function

[Bindable]
private var folderIcon:String;

public function setIcon(icon:String):void {
    folderIcon = icon; // "assets/images/test.png"
}

But how is it possible to replace these lines

folderOpenIcon="@Embed(source='assets/images/test.png')"
folderClosedIcon="@Embed(source='assets/images/test.png')"
defaultLeafIcon="@Embed(source='assets/images/test.png')"

with

folderIcon

? Does someone know this? Or should / can I use stylesheets?

Thanks a lot in advance & Best Regards.

Answer 1

I can do it with stylesheets. You can put in a

styleName="myButton"

and the via Stylesheets:

<mx:Style>
    .projectButton {
        icon: Embed("assets/images/test.png");
    }
</mx:Style>

(also possible is an external stylesheet).

Answer 2

Hi,

I am not really sure why you need that. Anyway if you are trying to embed images in AS3 you should do the following

class MyClass{

[Embed(source='assets/images/test_open.png')]
private static var folderOpenIcon:Class;

[Embed(source='assets/images/test_close.png')]
private static var folderClosedIcon:Class;

[Embed(source='assets/images/test_default.png')]
private static var defaultLeafIcon:Class;

[Bindable]
private var fodlerIcon:Class 

public function setIcon(iconClass:Class):void {
    folderIcon = iconClass:Class;
}

private function testIcon():void{
    setIcon(defaultLeafIcon); 
    // or
   setIcon(folderOpenIcon); 
    // etc

}    
}

Answer 3

Embedding happens at compile time; not at run time. You can't embed an element using a set method.

Here is some info about embedding assets, such as PNGs in Flex:

http://livedocs.adobe.com/flex/3/html/help.html?content=embed_4.html

    [Embed(source="assets/images/test.png")]
    [Bindable]
    public var folderIcon:Class;

And you can use it like this:

folderOpenIcon="{folderIcon}"
folderClosedIcon="{folderIcon}"
defaultLeafIcon="{folderIcon}"