I am trying to use pre-existing functions in a new prototype class but
am having some trouble with binding. When I call a function within a
function it says that one of my class variables is undefined. I have
defined the class variable correctly I think:
var DropDown = Class.create({
initialize: function(date, appt_counter, times, edit_or_add) {
this.start_drop_id = "start_drop_" + date + "_" + appt_counter;
})
Then in the following outside function, start_drop_id is errored as
being undefined:
DropDown.prototype.show_block = function(element_id, element)
{
if(document.getElementById(element_id).style.display == "block")
{
outsideOf = null;
$(document.body).descendants().invoke
('stopObserving','click',this.outside); //stopObserving the outside
request as we have finished
document.getElementById(element_id).style.display = "none";
} else {
outsideOf = element_id;
document.getElementById(element_id).style.display =
"block";
$(document.body).descendants().invoke
('observe','click',this.outside);
element.stopObserving('click',this.outside) //need to then
stop this from observing the outside - ie requires it at least
};
};
DropDown.prototype.outside = function(event) {
//alert(this.outsideOf)
this.element = event.element();
//alert(this.element.id)
if( outsideOf == null ) { //this shouldnt happen, but
just incase
$(document.body).descendants().invoke
('stopObserving','click',this.outside);
return;
};
this.element = Event.element(event);
if( this.element.descendantOf( $(outsideOf) ) !== true) {
outsideOf = null;
$(document.body).descendants().invoke
('stopObserving','click',this.outside);
document.getElementById(this.start_drop_id).style.display =
"none"; //it says this is null
};
};
I think I need to use .bind(this) somewhere or maybe
bindAsEventListener? I'm not sure. This is my first time writing a
prototype class so I am bit lost.
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