On Sun, Oct 25, 2009 at 20:39, panyasan <[email protected]> wrote:
>
> What I am trying to achieve is to get a local variable ('key') that is the
> product of the iteration through the keys of an object into a closure
> (here:
> an event listener). The problem is that when the event listener is called,
> the variable "key" evaluates to the last value it had when the iteration
> was
> completed, not to the value it had when the even listener was created. The
> only solution I could come up after a lot of experimenting was to use an
> ugly eval. Does anyone have a better idea?
>
var vbox = new qx.ui.container.Composite( new qx.ui.layout.VBox(5));
this.getRoot().add(vbox);
var data = {
"one": { label: "One" },
"two" : { label: "Two" },
"three":{ label: "Three" },
"four":{ label: "Four" },
"five":{ label: "Five" }
};
for( var key in data )
{
var button = new qx.ui.form.Button( data[key].label );
vbox.add(button);
// this doesn't work
button.addListener("execute",function(){
alert("Bad:" + data[key].label);
},this);
(function()
{
var thisKey = key;
button.addListener("execute", function(){
alert("Good:" + data[thisKey].label);
},this);
})();
}
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