Hello to all.
Can I create a class which inherits from a singleton class?
In my app my idea is have a singleton window type. It's named
adv4seller.SingletonWindow. So my idea is: every window in my
applicaition inherits from this class. Why? I need only one window of
each type: only one about window, only one credits window, etc.
Currently these are my classes:
qx.Class.define("adv4seller.SingletonWindow",
{
extend: qx.ui.window.Window,
type: "singleton",
construct: function() {
this.base(arguments);
this.set({
showClose: false,
showMaximize: false,
showMinimize: false
});
},
members: {
}
});
qx.Class.define("adv4seller.SingletonWindow2",
{
extend: adv4seller.SingletonWindow,
construct: function() {
this.base(arguments);
this.set({
width: 400,
height: 500
});
},
});
If I try to do:
var a = adv4seller.SingletonWindow2.getInstance()
The interpreter returns an error "getInstance is not a function"
What I need isn't a singleton superclass, but all inherited classes
with an singleton "property". I think I'm probrably doing somethig
wrong. What's the "qx-way" to do this?
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