Thread: [Dynapi-Widgetdev] NS often crashes with a simple widget ...

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Hi all,

I'm trying to use DynAPI to built my personal widgets, but I found some
misteriuos crashing when resizing NS (4.72) on NT 4.0 (NS 4.72 on Linux
RedHat 6.2 works fine; also with IE 5.5 works fine).
I didn't understand your answers very well on this arguments ...

Try resizing this example ("lxbutton.js" is my widget rollover button) for
about 10 times and you'll see the crashing:

(Note I dont' re-create the widget in l.oncrerate() event!)

--- code of "lxbutton.js" -----------

function lxbutton(x,y,w,h,caption,color,bdc1,bdc2,rollOver) {
	this.superClass=DynLayer
	this.superClass()
	this.id="lxbutton"+(lxbutton.Count++)

	this.moveTo(x||0,y||0)
	this.setSize(w||128,h||36)

	this.caption=caption||''

	var l=new EventListener(this)
	l.oncreate=function(e) {
		if (this.created) return
		o=e.getTarget()
		o.setBgColor(color)

		c1=color
		c2=color
		if (!rollOver) {
		   c1=bdc1
		   c2=bdc2
		}

		o.BorderL=new DynLayer(null,0,0,1,o.h,c1)
		o.BorderT=new DynLayer(null,0,0,o.w,1,c1)
		o.BorderR=new DynLayer(null,o.w-1,1,1,o.h-1,c2)
		o.BorderB=new DynLayer(null,1,o.h-1,o.w-1,1,c2)

		o.addChild(o.BorderL)
		o.addChild(o.BorderT)
		o.addChild(o.BorderR)
		o.addChild(o.BorderB)

		x1=6
		x2=6
		if (!rollOver) {
		   x1=5
		   x2=5
		}
		o.dyncaption=new DynLayer(null,x1,x2,o.w-6,o.h-6)
		o.dyncaption.setHTML(o.caption)
		o.addChild(o.dyncaption)
		if (!is.ns) o.dyncaption.addEventListener(o.events)

		o.dynevents = new DynLayer(null,0,0,o.w,o.h)
		if (!is.ns) o.dynevents.addEventListener(o.events)
		o.addChild(o.dynevents)

		o.setVisible(true)
		this.created=true
	}

	this.addEventListener(l)

	this.events=new EventListener(this)

	this.events.onmousedown=function(e)

		o=e.getTarget()
		o.BorderL.setBgColor(bdc2)
		o.BorderR.setBgColor(bdc1)
		o.BorderT.setBgColor(bdc2)
		o.BorderB.setBgColor(bdc1)
		o.dyncaption.moveTo(6,6)
	}

	this.events.onmouseup=function(e) {
		o=e.getTarget()
		o.BorderL.setBgColor(bdc1)
		o.BorderR.setBgColor(bdc2)
		o.BorderT.setBgColor(bdc1)
		o.BorderB.setBgColor(bdc2)
		o.invokeEvent("click")
		o.dyncaption.moveTo(5,5)
	}

	if (rollOver)

	   this.events.onmouseover=function(e){
			o=e.getTarget()
			o.BorderL.setBgColor(bdc1)
			o.BorderR.setBgColor(bdc2)
			o.BorderT.setBgColor(bdc1)
			o.BorderB.setBgColor(bdc2)
			o.dyncaption.moveTo(5,5)
		}

		this.events.onmouseout=function(e){
			o=e.getTarget()
			o.BorderL.setBgColor(color)
			o.BorderR.setBgColor(color)
			o.BorderT.setBgColor(color)
			o.BorderB.setBgColor(color)
			o.dyncaption.moveTo(6,6)
		}
	}
	if (is.ns) this.addEventListener(this.events)

	return this
}
lxbutton.Count=0
lxbutton.prototype=new DynLayer()
lxbutton.prototype.getSubClass=function() { return lxbutton }

------ code of "test.html" --------

<html>
<head><title>DynAPI2 tutor - button widget</title>
<Script language="Javascript" src="./js/dynapi.js"></script>
<Script language="Javascript">

DynAPI.setLibraryPath('./js/lib/')

DynAPI.include('dynapi.api.*')

</script>

<Script language="Javascript" src="./lxbutton.js">
</script>

<Script language="Javascript">
DynAPI.onLoad=function() {

	// a no-rollover button
	myButton=new lxbutton(50,50,220,60,'<img src="logo.gif">Click
Me','#c0c0c0','#f0f0f0','#808080',false)
	DynAPI.document.addChild(myButton)

	// 3 rollover buttons

	layer=new DynLayer(null,280,20,350,400,'#b21104')
	DynAPI.document.addChild(layer)

	myLxButton0=new lxbutton(50,50,260,60,'<img src="logo.gif">Click and Over
Me','#b21104','#ffffff','#808080',true)
	layer.addChild(myLxButton0)

	myLxButton1=new lxbutton(50,120,260,60,'<img src="logo.gif">Click and Over
Me','#b21104','#ffffff','#808080',true)
	layer.addChild(myLxButton1)

	myLxButton2=new lxbutton(50,190,260,60,'<img src="logo.gif">Click and Over
Me','#b21104','#ffffff','#808080',true)
	layer.addChild(myLxButton2)

}

</script>
</head>
<body>
</body>
</html>

So, what is my error?

Thanx in advance.
Michele Muner.

Thread: [Dynapi-Widgetdev] NS often crashes with a simple widget ...

dynapi-widgetdev