TextLineMirrorRegions - problems if more than one in a line

Question

The example in the AS3.0 reference for TextLineMirrorRegions shows text elements that turn red when clicked. It works fine when each region falls on its own line. But if the line width is changed from 150 to 850, so both regions fall in the same line, only the first one turns red no matter which one you click.
I discoverd this while writing an html parser that would underline and activate lnks (eg <a href=...>text</a>) and found that if two links were on the same line, only one is underlined and no matter which one you click you go to the link of the first. So the underlining code pasted into the example code looks like this:
        var groupVector:Vector.<ContentElement>=new Vector.<ContentElement>  ;
    groupVector.push(new TextElement("one", blackFormat)); 
    groupVector[groupVector.length-1].eventMirror=myEvent;  // underline this element when added
    groupVector.push(new TextElement(" and ", blackFormat));
    groupVector.push(new TextElement("two", blackFormat));
    groupVector[groupVector.length-1].eventMirror=myEvent;
    groupVector.push(new TextElement(" and ", blackFormat));
    groupVector.push(new TextElement("three", blackFormat));
    groupVector[groupVector.length-1].eventMirror=myEvent;
    groupVector.push(new TextElement(".", blackFormat));
myEvent has a listener for "addedToStage" that looks like this:
private function myHandler(event):void {
    var line:TextLine=event.target as TextLine;
    var region:TextLineMirrorRegion=line.getMirrorRegion(myEvent);
    var selected:TextElement=region.element as TextElement;
    trace("underlining " + selected.text);
    var box:Sprite = new Sprite();
    box.graphics.lineStyle(1, color, 1);
    var color=0x000000;
    box.graphics.moveTo(region.bounds.x , region.bounds.y + region.bounds.height);
    box.graphics.lineTo(region.bounds.x + region.bounds.width, region.bounds.y + region.bounds.height);
    line.addChild(box);
With a narrow line width in the createLines function, everything works properly. But if it is widened, all three events dispatched reference the first mirror region so the word "one" gets underlined three times (the trace shows this.)
I've inspected textLine.mirrorRegions and all three are there. When the event is triggered, the region referenced always shows nextRegion as null. I can't see anything in the event that indicates which region to act on - what am I missing? On the mouse click event, I can determine the mouse position but I still can't figure out how to get the userData (which has the href url) from the right mirror region from that (unless, I guess, I iterate through all the line's regions and inspect their bounds - but that seems like a kludge, and still doesn't help with the addedToStage event.)

Answer 1

update: I have this working now my iterating through textLine.mirrorRegions on each call, but think there must be a better way. So for underlining:
            //var region:TextLineMirrorRegion=line.getMirrorRegion(dispatcher);
            for each (region in line.mirrorRegions) {
               if (region.mirror==dispatcher) {
                    // draw the sprite
Similarly for the link click, by looking at the region bounds and mouseEvent.localX.
Which means the underline sprite gets drawn three times for the single line of text. I could keep track of which ones have been drawn, I guess, but is there an easier path than iteration?