Current File : //www/varak.net/wiki.varak.net/extensions/Mantle/javascripts/common/Class.js
/* jshint loopfunc: true */
/**
* @class Class
*/
( function( M ) {
/**
* Extends a class with new methods and member properties.
*
* @param {Object} prototype
* @method
* @return {Class}
*/
function extend( prototype ) {
var Parent = this, key;
function Child() {
return Parent.apply( this, arguments );
}
function Surrogate() {}
Surrogate.prototype = Parent.prototype;
Child.prototype = new Surrogate();
Child.prototype._parent = Parent.prototype;
// http://ejohn.org/blog/simple-javascript-inheritance
// Copy the properties over onto the new prototype
for ( key in prototype ) {
// Check if we're overwriting an existing function
if ( typeof prototype[key] === 'function' && typeof Parent.prototype[key] === 'function' ) {
Child.prototype[key] = ( function( key, fn ) {
return function() {
var tmp = this._super, ret;
// Add a new ._super() method that is the same method
// but on the super-class
this._super = Parent.prototype[key];
// The method only need to be bound temporarily, so we
// remove it when we're done executing
ret = fn.apply(this, arguments);
this._super = tmp;
return ret;
};
} )( key, prototype[key] );
} else {
Child.prototype[key] = prototype[key];
}
}
Child.extend = extend;
return Child;
}
function Class() {
this.initialize.apply( this, arguments );
}
/**
* Constructor, if you override it, use _super().
* @method
*/
Class.prototype.initialize = function() {};
Class.extend = extend;
M.define( 'Class', Class );
}( mw.mantle ) );
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