After upgrading to the latest version of Firefox today I found that the doubleclick event is not working anymore. I start researching and found that the double click event is not been fired, I don’t know how long this problem will last, but i needed to do something right now, so I place a workaround to mimic the doubleClick event, here is my solution

First add this class to your project:

package com.myapp.utils
{
import flash.events.Event;
import flash.events.MouseEvent;
import flash.utils.Timer;

import mx.core.UIComponent;

/**
* The DVTwoSingleClicksManager allows to two quick single click events on an UIComponent.
*/
public class TwoSingleClicksManager
{

// This is the max delay between successive single clicks to treat them as double click
private const TIME_OUT:int = 1000;

public var active:Boolean=true;
// Component to observe
private var component:UIComponent = null;

public function TwoSingleClicksManager(component:UIComponent)
{
super();
this.component = component;
this.component.addEventListener(MouseEvent.CLICK, singleClick, false, 0, true);
}

// This timer will be used to measure time between click and double click events.
private var timer:Timer = null;
// This var is used to store click event.
private var storedEvent:Event = null;
// This method resets timer and nullify var
private function stopTimer():Event {
var lc_storedEvent:Event = storedEvent;
storedEvent = null;
if (timer != null) {
timer.reset();
timer = null;
}
return lc_storedEvent;
}
// This method stops current timer, creates a new one and starts it.
private function startTimer(event:Event):void {
stopTimer();
storedEvent = event;
timer = new Timer(TIME_OUT, 1);
//timer.addEventListener(TimerEvent.TIMER_COMPLETE, deferredSingleClick);
timer.start();
}

// This method is called when a click event is sent
// One timer is started, event will be forwarded only if timer times out.
private function singleClick(event:MouseEvent):void {
if(active){
if(timer && timer.running) {
var storedEvent:MouseEvent = MouseEvent(stopTimer());
//the new event and old event should have same coordinates, that is clicked on same point
if(storedEvent.stageX  == event.stageX && storedEvent.stageY == event.stageY) {
//Alert.show(“dispatching single event…”);
stopTimer();
dispatchDoubleClick(event);
} else {
startTimer(event);
}
} else {
startTimer(event);
}
}
}


// This method is called when a double click event is sent
// Timer is stopped, so that click event is not sent
private function dispatchDoubleClick(event:MouseEvent):void {
stopTimer();
component.dispatchEvent(new MouseEvent(MouseEvent.DOUBLE_CLICK));
}
}

}

Here is the way to use it:

<?xml version=”1.0″ encoding=”utf-8″?>
<mx:Application xmlns:mx=”http://www.adobe.com/2006/mxml” layout=”absolute” creationComplete=”setup()”>
<mx:Script>
<![CDATA[
importcom.myapp.utils.TwoSingleClicksManager;
import mx.controls.Alert;

var dcHandler:TwoSingleClicksManager;

private function setup():void{
dcHandler= new TwoSingleClicksManager(labelTxt);
}

private function doubleClickHandler(event:MouseEvent):void{
Alert.show("Double Click on "+event.currentTarget);
}

private function singleClickHandler(event:MouseEvent):void{
Alert.show("Single Click on "+event.currentTarget);
}
]]>
</mx:Script>
<mx:Canvas x=”46″ y=”37″ width=”179″ height=”140″ backgroundColor=”#DB1313″ doubleClick=”doubleClickHandler(event)” >
<mx:Text x=”53″ y=”36″ text=”Not Working” color=”#FBFDFD” fontSize=”12″ doubleClick=”doubleClickHandler(event)”/>
</mx:Canvas>
<mx:Canvas x=”314″ y=”37″ width=”378″ height=”140″ backgroundColor=”#0D0DF1″ doubleClick=”doubleClickHandler(event)”>
<mx:Text id=”labelTxt” x=”10″ y=”10″ text=”Working  &#xd;(only if you click the this label since the TwoSingleClickManager is only attached to the label, but you can attach any object)” color=”#FBFDFD” fontSize=”12″ doubleClick=”doubleClickHandler(event)” height=”114″ width=”333″/>
</mx:Canvas>
</mx:Application>

It was made like this, because I hope this is temporal, otherwise I would have added it to the component and find if we are trying to add a doubleClick event and activate it or something like that so it will work for every component, but for now you have to create a new object of this type for each component where you are expecting a doubleClick Event and deactivated if you don’t want to use it anymore. I think i will keep improving this if is necessary, but I guess a lot of people might be in a rush to fix this and i just wanted to share it.