We are using a very simple AOP implementation (that Samuel Lebeau has
come up with) in Prototype UI.
http://i.gotfresh.info/2007/12/7/advised-methods-for-javascript-with-prototype
One relevant problem we are facing is how inconvenient it is to fire
certain framework-level events. In the following example, we can't
fire custom event ('component:initialized') from within parent
constructor as it would lose all the semantic in a subclass. Letting
subclasses fire events on their own (as an alternative solution) just
doesn't feel quite right. I'm guessing the best way would be to
augment Class.create to "wrap" constructors, yet handle $super calls
properly.
UI.Component = Class.create(UI.Observable, {
initialize: function(element) {
this.element = element;
// ... do some initialization
this.fire(this.componentId + ':initialized');
}
})
UI.Menu = Class.create(UI.Component, {
initialize: function($super, element) {
$super(element); // <= event is fired from within parent, royally
messing things up
...
// <= need to be fired in the end of execution
}
})
Best,
kangax
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