In another thread I wrote:
> The biggest problem with events at the moment is only Elements can fire > them. This makes MVC difficult because the Model (javascript objects) not > the view (HTML elements) would ideally fire the events. > > For Prototype2, maybe there should be an observable mixin. When mixed in, > any object can fire events. To which Toby replied: > This is already possible with our current event system using the > `document` object as broker. > > Please see a basic, untested implementation here: > > http://gist.github.com/203193 The implementation linked here is good, but isn't there a problem with: //Foo mixes in Observable var a = new Foo(); var b = new Foo(); a.observe( 'change', function(){alert( 'a changed' )}; b.observe( 'change', function(){alert( 'b changed' )}; a.fire('change'); // both listeners are now notified even though only object a fired. One fix might be to do: line22: document.fire( this.somethingUnique + eventName, data); line 26: document.observe( this.somethingUnique + eventName, callback); But I don't know where the somethingUnique would come from. Jim -- Jim my wiki ajaxification thing: http://wikizzle.org my blog: http://jimhigson.blogspot.com/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Prototype: Core" group. To post to this group, send email to prototype-core@googlegroups.com To unsubscribe from this group, send email to prototype-core-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/prototype-core?hl=en -~----------~----~----~----~------~----~------~--~---
