Hi Lars,
welcome to qooxdoo.
> Hi,
>
> I newly subscribed the list because I'm currently developing a RAP
> custom widget and I do have some problems with the JavaScript
> counterpart of my Java implementation. This question is regarding
> qooxdoos property system. I'm sure I missed some important points.
>
> My RAP widget passes an int[] named "pixel" to qooxdoo and the property
> system automatically call "setX" and "setY" to set the members from
> incoming int[] as below:
>
There is no apply method for grouped properties. Maybe in this special
case you are better off by using a dedicated method like
setPixel : function(x, y) {
this.__x = x;
this.__y = y;
this._drawPixel(x,y);
}
you could provide getter methods for x/y separately or provide a
combined getter.
Best Fabian
> properties : {
>
> x : {
> apply : "_drawPixel",
> init : null
> },
>
> y : {
> apply : "_drawPixel",
> init : null
> },
>
> pixel : {
> check : "Array",
> group : [ "x", "y" ]
> }
> },
>
> members : {
> _drawPixel : function(value, old) {
> // draw a pixel at [x,y]
> },
> ...
> }
>
> My question is: how can I ensure a single or atomic setter for grouped
> properties? If I want to draw a point at [x,y] how can I ensure that the
> _drawPixel method is called only once. Better said: is called only when
> property x AND y is initialized? Is there something like?
>
> pixel : {
> check : "Array",
> group : [ "x", "y" ],
> apply : "_drawPixel"
> }
>
> Any help is appreciated. Kindest regards, Lars
>
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--
Fabian Jakobs
JavaScript Framework Developer
1&1 Internet AG
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