Event issues (not detected) - actionscript-3

Question

I'm quite new to Flex and ActionScript, and I'm trying to do an application whose purpose is simply to be able to dynamically create rectangles on a panel: on mouse down the rectangle is created and updated on mouse move events (left button hold down), then the rectangle is achieved with mouse up.
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
width="550" height="400"
creationComplete="this.onCreationComplete(event);">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import mx.controls.Alert;
import mx.events.FlexEvent;
import mx.graphics.SolidColor;
import spark.primitives.Graphic;
import spark.primitives.Rect;
public static const WIDTH:int = 480;
public static const HEIGHT:int = 300;
public static const BACKGROUND:int = 0xEFEFEF;
public static const CURRENT_FILL:SolidColor = new SolidColor(0x00AA00, 0.75);
protected var rectangles:ArrayCollection = null;
protected var currentRect:Rect = null;
protected var dragging:Boolean = false;
protected function onCreationComplete(event:FlexEvent):void
{
this.rectangles = new ArrayCollection();
this.sprite.graphics.beginFill(BACKGROUND);
this.sprite.graphics.drawRect(0, 0, this.sprite.width, this.sprite.height);
this.sprite.graphics.endFill();
this.sprite.addEventListener(MouseEvent.MOUSE_DOWN, this.onMouseDown);
this.sprite.addEventListener(MouseEvent.MOUSE_UP, this.onMouseUp);
}
protected function onMouseDown(event:MouseEvent):void
{
this.currentRect = new Rect();
this.currentRect.y = 10;
this.currentRect.height = this.sprite.height - (10 * 2);
this.currentRect.x = event.localX;
this.currentRect.width = 1;
this.panel.addElement(this.currentRect);
this.dragging = true;
this.sprite.addEventListener(MouseEvent.MOUSE_MOVE, this.onMouseMove);
}
protected function onMouseUp(event:MouseEvent):void
{
if (this.dragging)
{
this.sprite.removeEventListener(MouseEvent.MOUSE_MOVE, this.onMouseMove);
this.rectangles.addItem(this.currentRect);
this.dragging = false;
}
}
protected function onMouseMove(event:MouseEvent):void
{
if (this.dragging)
{
this.currentRect.width = event.localX - this.currentRect.x;
}
}
]]>
</fx:Script>
<s:Panel id="panel" x="10" y="10" title="Calendar">
<s:SpriteVisualElement id="sprite" width="{WIDTH}" height="{HEIGHT}" />
</s:Panel>
</s:WindowedApplication>
All works fine but now I want to do some actions when the user clicks (or double clicks, or what you want) on a rectangle. I tried to add an event on each rectangle (this.currentRect.addEventListener(MouseEvent.DOUBLE_CLICK, myMethod) added in onMouseUp), but the corresponding method is never executed...
What's the problem?

Answer 1

Objects drawn with the graphics API are not event dispatchers. So use addElement to add the Spark primitive rects that you're creating but not using in any way (to a container such a Group) instead of using the graphics api to draw the shapes.
You might find it's better, however, to simply have the ArrayCollection contain a bunch of bindable data objects and use a DataGroup with itemRenderers to display the data.

Answer 2

You could keep track of the rectangles you have drawn in a collection and do a hit test with the rectangles on mouse clicks and determine if any rectangle is being clicked on.