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/**
* Similar to bindAsEventLister, but takes additional arguments.
*/
Function.prototype.bindEvent = function()
{
var __method = this, args = $A(arguments), object = args.shift();
return function(event)
{
return __method.apply(object, [event || window.event].concat(args));
}
}
/**
* Creates a new function by copying function definition from
* the <tt>base</tt> and optional <tt>definition</tt>.
* @param function a base function to copy from.
* @param array additional definition
* @param function return a new function with definition from both
* <tt>base</tt> and <tt>definition</tt>.
*/
Class.extend = function(base, definition)
{
var component = Class.create();
Object.extend(component.prototype, base.prototype);
if(definition)
Object.extend(component.prototype, definition);
return component;
}
/*
Base, version 1.0.2
Copyright 2006, Dean Edwards
License: http://creativecommons.org/licenses/LGPL/2.1/
*/
/*
var Base = function() {
if (arguments.length) {
if (this == window) { // cast an object to this class
Base.prototype.extend.call(arguments[0], arguments.callee.prototype);
} else {
this.extend(arguments[0]);
}
}
};
Base.version = "1.0.2";
Base.prototype = {
extend: function(source, value) {
var extend = Base.prototype.extend;
if (arguments.length == 2) {
var ancestor = this[source];
// overriding?
if ((ancestor instanceof Function) && (value instanceof Function) &&
ancestor.valueOf() != value.valueOf() && /\bbase\b/.test(value)) {
var method = value;
// var _prototype = this.constructor.prototype;
// var fromPrototype = !Base._prototyping && _prototype[source] == ancestor;
value = function() {
var previous = this.base;
// this.base = fromPrototype ? _prototype[source] : ancestor;
this.base = ancestor;
var returnValue = method.apply(this, arguments);
this.base = previous;
return returnValue;
};
// point to the underlying method
value.valueOf = function() {
return method;
};
value.toString = function() {
return String(method);
};
}
return this[source] = value;
} else if (source) {
var _prototype = {toSource: null};
// do the "toString" and other methods manually
var _protected = ["toString", "valueOf"];
// if we are prototyping then include the constructor
if (Base._prototyping) _protected[2] = "constructor";
for (var i = 0; (name = _protected[i]); i++) {
if (source[name] != _prototype[name]) {
extend.call(this, name, source[name]);
}
}
// copy each of the source object's properties to this object
for (var name in source) {
if (!_prototype[name]) {
extend.call(this, name, source[name]);
}
}
}
return this;
},
base: function() {
// call this method from any other method to invoke that method's ancestor
}
};
Base.extend = function(_instance, _static) {
var extend = Base.prototype.extend;
if (!_instance) _instance = {};
// build the prototype
Base._prototyping = true;
var _prototype = new this;
extend.call(_prototype, _instance);
var constructor = _prototype.constructor;
_prototype.constructor = this;
delete Base._prototyping;
// create the wrapper for the constructor function
var klass = function() {
if (!Base._prototyping) constructor.apply(this, arguments);
this.constructor = klass;
};
klass.prototype = _prototype;
// build the class interface
klass.extend = this.extend;
klass.implement = this.implement;
klass.toString = function() {
return String(constructor);
};
extend.call(klass, _static);
// single instance
var object = constructor ? klass : _prototype;
// class initialisation
if (object.init instanceof Function) object.init();
return object;
};
Base.implement = function(_interface) {
if (_interface instanceof Function) _interface = _interface.prototype;
this.prototype.extend(_interface);
};
*/
/*
* Signals and Slots for Prototype: Easy custom javascript events
* http://tetlaw.id.au/view/blog/signals-and-slots-for-prototype-easy-custom-javascript-events
* Andrew Tetlaw
* Version 1 (2006-05-03)
*
* http://creativecommons.org/licenses/by-sa/2.5/
*/
Signal = {
throwErrors : true,
MT : function(){ return true },
connect : function(obj1, func1, obj2, func2, options) {
var options = Object.extend({
connectOnce : false
}, options || {});
if(typeof func1 != 'string' || typeof func2 != 'string') return;
var sigObj = obj1 || window;
var slotObj = obj2 || window;
var signame = func1+'__signal_';
var slotsname = func1+'__slots_';
if(!sigObj[signame]) {
// having the slotFunc in a var and setting it by using an anonymous function in this way
// is apparently a good way to prevent memory leaks in IE if the objects are DOM nodes.
var slotFunc = function() {
var args = arguments;
var result = sigObj[signame].apply(sigObj,args);
sigObj[slotsname].each(function(slot){
try {
if(slot && slot[0]) { // testing for null, a disconnect may have nulled this slot
slot[0][slot[1]].apply(slot[0],args); //[0] = obj, [1] = func name
}
} catch(e) {
if(Signal.throwErrors) throw e;
}
});
return result;
};
(function() {
sigObj[slotsname] = $A([]);
sigObj[signame] = sigObj[func1] || Signal.MT;
sigObj[func1] = slotFunc;
})();
}
var con = (sigObj[slotsname].length > 0) ?
(options.connectOnce ? !sigObj[slotsname].any(function(slot) { return (slot[0] == slotObj && slot[1] == func2) }) : true) :
true;
if(con) {
sigObj[slotsname].push([slotObj,func2]);
}
},
connectOnce : function(obj1, func1, obj2, func2, options) {
Signal.connect(obj1, func1, obj2, func2, Object.extend(options || {}, {connectOnce : true}))
},
disconnect : function(obj1, func1, obj2, func2, options) {
var options = Object.extend({
disconnectAll : false
}, options || {});
if(typeof func1 != 'string' || typeof func2 != 'string') return;
var sigObj = obj1 || window;
var slotObj = obj2 || window;
var signame = func1+'__signal_';
var slotsname = func1+'__slots_';
// I null them in this way so that any currectly active signal will read a null slot,
// otherwise the slot will be applied even though it's been disconnected
if(sigObj[slotsname]) {
if(options.disconnectAll) {
sigObj[slotsname] = sigObj[slotsname].collect(function(slot) {
if(slot[0] == slotObj && slot[1] == func2) {
slot[0] = null;
return null;
} else {
return slot;
}
}).compact();
} else {
var idx = -1;
sigObj[slotsname] = sigObj[slotsname].collect(function(slot, index) {
if(slot[0] == slotObj && slot[1] == func2 && idx < 0) { //disconnect first match
idx = index;
slot[0] = null;
return null;
} else {
return slot;
}
}).compact();
}
}
},
disconnectAll : function(obj1, func1, obj2, func2, options) {
Signal.disconnect(obj1, func1, obj2, func2, Object.extend(options || {}, {disconnectAll : true}))
}
}
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