Re: [Dynapi-Widgetdev] How to add listening to a dynlayer on another dynlayer objects event?

[Henrik V. <hv...@ya...>]

Oh, and the error message I get is:

JavaScript Error:
file:///E|/ccr...@cf.../dynapi/src/dynapi.js,
line 77:

array has no properties.=20

It's me using it wrong, right? It's not a DynAPI bug now, is it?

Henrik V=E5glin [ hv...@ya... ]

----- Original Message -----=20
From: "Henrik V=E5glin" <hv...@ya...>
To: <dyn...@li...>
Sent: Friday, February 09, 2001 9:06 PM
Subject: [Dynapi-Widgetdev] How to add listening to a dynlayer on =
another dynlayer objects event?


I'm developing a custom extension to the dynlayer object that positions =
against another named dynlayer. I got that part working statically, but =
now for it to be useful I need to a listener that let the dynlayer =
follow its counterpartner. How do I go about to create the required =
listener for scroll, move and resize events? Anybody got a good example, =
something to point to or any suggestion?

This is my current listener code:

****

DynLayer.prototype.positionAtLyr=3Dfunction(othLyr,pos,marginX,marginY,sl=
ide,slideBy,slideSpeed) {

this.doPos =3D function() { =
eval(this+".positionAtLyr("+othLyr+",'"+pos+"',"+marginX+","+marginY+","+=
slide+","+slideBy+","+slideSpeed+")") };=20

this.getPosAtLyr(othLyr,pos,marginX,marginY)

if (slide) {
   if (!slideBy) slideBy =3D 10;
   if (!slideSpeed) slideSpeed =3D 20;
   this.slideTo(posX,posY,slideBy,slideSpeed)
   } else {
   this.moveTo(posX,posY);
   }
}

DynLayer.prototype.setPersistPos =3D function(b) {
 this.persistPos=3Db
 if (b=3D=3Dfalse) {
 this.posListener =3D new EventListener(this.parent);
 this.posListener.onmove =3D function(e) {
  this.doPos();=20
  };
 this.addEventListener(this.posListener);
 }
 else {
  this.removeEventListener(this.posListener);
 }
};


***

DynLayer.prototype.getPosAtLyr() which isn't included here, is what =
calculates and returns variables PosX and PosY (in case you wondered). =
doPos() is a function to rerun the same function again (ie calculate but =
with the new values and then move the layer there).=20

my example code has the following in the page DynAPI.onload fumction:

***

 myOtherLayer =3D new DynLayer();
 myOtherLayer.setSize(100,100);
 myOtherLayer.setBgColor('lightgrey');
        DynAPI.document.addChild(myOtherLayer);
 myOtherLayer.positionAtLyr(myLayer,'middleleft',12,12);
 myOtherLayer.setPersistPos(true);

***

myLayer is of course the layer to position against.

I'd be most grateful if anybody could help me solve this one...

Henrik V=E5glin [ hv...@ya... ]


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