Flex Object Reference Through Variable Value

Question

Is it possible to reference an object using a variable value?

For example, I have a function that is supposed to hide an image and add that image to an inventory list when the item is clicked.
All the image info is stored in an object (name, imgSource, visible, x, y);

I was thinking I could do something like this:

<fx:Script>
    <![CDATA[
        public var item:Object = new Object();

        // name, imgSource, xPos, yPos, visible
        [Bindable]
        public var knife:ItemInfo = new ItemInfo('knife','knife.png',50,50,true);

        public function addItem(evnt:MouseEvent):void
        {
            // I want "item" to be equal to the object "knife"
            item = evnt.currentTarget.name;
            item.visible = false;
            inventory.addItem(item.name);
        }
    ]]>
</fx:Script>

<s:Image source="{knife.source}" name="knife" 
         x="{knife.xPos}" y="{knife.yPos}" 
         visible="{knife.visible}"
         click="addItem(event);" />

I want "item" to stand for knife so that I could change knife.visible, knife.xPos, ect.
Is that possible, or is there a better way to do this?

Thanks!

Jude Cooray · Accepted Answer · 2011-12-29 15:21:11Z

1

Why does item have to be an Object ? Why cannot it be of type ItemInfo ?

Also item = evnt.currentTarget should work if you want item to reference the knife image that was clicked.

Update

ToolInfo ? or ItemInfo ?

Anyway evnt.currentTarget is of type object. Try casting it to type ItemInfo.

evnt.currentTarget as ItemInfo

edited Dec 29, 2011 at 15:21

answered Dec 29, 2011 at 3:30

Jude Cooray

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2 Comments

jao Over a year ago

If i make "item" a type ItemInfo, I get this error: 1118: Implicit coercion of a value with static type Object to a possibly unrelated type components:ToolInfo.

jao Over a year ago

that didn't work either error: cannot access property "visible", but I guess I did figure out a different way to do it. Thanks for the help anyways

jao · Accepted Answer · 2011-12-29 20:35:21Z

The easiest way to change the values of the object on click is just to pass the object itself into the addItem() function. The problem with this is that I have to preselect which variable goes into the function at what time, but for this purpose it works great.

<fx:Script>
<![CDATA[
    public var item:Object = new Object();

    // name, imgSource, xPos, yPos, visible
    [Bindable]
    public var knife:ItemInfo = new ItemInfo('knife','knife.png',50,50,true);

    public function addItem(item:ItemInfo):void
    {
        item.visible = false;
        inventory.addItem(item.name);
    }
    ]]>
</fx:Script>

<s:Image source="{knife.source}" name="knife" 
     x="{knife.xPos}" y="{knife.yPos}" 
     visible="{knife.visible}"
     click="addItem(knife);" />

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