/*
* A Popup class to open new windows, using the Prototype.js lib.
*
* Basic Usage:
*		var win = new Popup.Base( url_for_popup [, options [, window_options ] ] )
*
* Example:
*		var win = new Popup.Base('http://www.google.com/');
* With options:
*   var win = new Popup.Base('http://www.google.com/', { focus: true }, { statusbar: 1});
*
* To close the window:
*		win.close();
*
* To focus the window:
*		win.focus();
*/

var Popup = Object.extend(Object.extend(Enumerable), {
});

Popup.Base = Class.create();
Popup.Base.prototype = {
	// open a popup
	// only mandatory is the url for the popup
	initialize: function() {
		this.url = arguments[0];
		// get the options
		this.options = Object.extend({
			name: 'popup',
			focus: false
		}, arguments[1] || {});

		// get the window options
		this.window_options = $H(Object.extend({
			width: 640,
			height: 480,
			toolbar: 0,
			scrollbars: 1,
			location: 0,
			statusbar: 0,
			menubar: 0,
			resizable: 1
		}, arguments[2] || {}));

		this.window = window.open(this.url, this.options.name, this.window_options.map(function(v, i) {
			return v[0] + '=' + v[1];
		}).join(', '));
		Popup[this.url] = this; // place in the popup object, to be able to iterate over it

		if (this.options.focus) {
			this.focus();
		}
	},

	// close a popup window
	close: function() {
		this.window.close();
		if (this.url in Popup) { // remove from the popup object
			delete Popup[this.url];
		}
	},

	// focus an open popup window
	focus: function() {
		this.window.focus();
	}
};