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/*
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
Available via Academic Free License >= 2.1 OR the modified BSD license.
see: http://dojotoolkit.org/license for details
*/
if(!dojo._hasResource["dojox.lang.oo.general"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.lang.oo.general"] = true;
dojo.provide("dojox.lang.oo.general");
dojo.require("dojox.lang.oo.Decorator");
(function(){
var oo = dojox.lang.oo, md = oo.makeDecorator, oog = oo.general,
isF = dojo.isFunction;
// generally useful decorators
oog.augment = md(function(name, newValue, oldValue){
// summary: add property, if it was not defined before
return typeof oldValue == "undefined" ? newValue : oldValue;
});
oog.override = md(function(name, newValue, oldValue){
// summary: override property only if it was already present
return typeof oldValue != "undefined" ? newValue : oldValue;
});
oog.shuffle = md(function(name, newValue, oldValue){
// summary: replaces arguments for an old method
return isF(oldValue) ?
function(){
return oldValue.apply(this, newValue.apply(this, arguments));
} : oldValue;
});
oog.wrap = md(function(name, newValue, oldValue){
// summary: wraps the old values with a supplied function
return function(){ return newValue.call(this, oldValue, arguments); };
});
oog.tap = md(function(name, newValue, oldValue){
// summary: always returns "this" ignoring the actual return
return function(){ newValue.apply(this, arguments); return this; };
});
oog.before = md(function(name, newValue, oldValue){
// summary:
// creates a chain of calls where the new method is called
// before the old method
return isF(oldValue) ?
function(){
newValue.apply(this, arguments);
return oldValue.apply(this, arguments);
} : newValue;
});
oog.after = md(function(name, newValue, oldValue){
// summary:
// creates a chain of calls where the new method is called
// after the old method
return isF(oldValue) ?
function(){
oldValue.apply(this, arguments);
return newValue.apply(this, arguments);
} : newValue;
});
})();
}
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