GB_OpenerObj = {};
GB_RefreshLink = "";

ComplexTableField = Class.create();
ComplexTableField.prototype = {
	
	// TODO adjust dynamically
	popupWidth: 560,
	popupHeight: 390,
	
	initialize: function() {
		var rules = {};
		rules['#'+this.id+' table.data a.popuplink'] = {onclick: this.openPopup.bind(this)};
		rules['#'+this.id+' table.data tbody td'] = {onclick: this.openPopup.bind(this)};
		
		// invoke row action-link based on default-action set in classname
		if(typeof defaultAction != 'undefined' && defaultAction) {
			rules['#'+this.id+' table.data tbody td'] = {
				onclick: function(e) {
					var link = $$('.'+defaultAction, Event.element(e).parentNode)[0].getAttribute('href');
					this.openPopup(null, link);
					return false;
				}.bind(this)
			};
		}
		Behaviour.register(rules);
		
		// HACK If already in a popup, we can't allow add (doesn't save existing relation correctly)
		if(window != top) $$('#'+this.id+' table.data a.addlink').each(function(el) {Element.hide(el);});
	},
	
	getDefaultAction: function() {
		// try to get link class from <td class="action default"><a href="...
		var links = $$('#'+this.id+' table.data tbody .default a');
		// fall back to first given link
		if(!links || !links[0]) links = $$('#'+this.id+' table.data tbody .action a');
		return (links && links[0]) ? $A(Element.classNames(links[0])).last() : false;
	},
	
	/**
	 * @param href, table Optional dom object (use for external triggering without an event)
	 */
	openPopup: function(e, _popupLink, _table) {
		// If already in a popup, simply open the link instead
		// of opening a nested lightwindow
		if(window != top) return true;
		
		var el,type;
		var popupLink = "";
		if(_popupLink) {
			popupLink = _popupLink;
			table = _table;
		} else {
			// if clicked item is an input-element, don't trigger popup
			var el = Event.element(e);
			var input = Event.findElement(e,"input");
			var tr = Event.findElement(e, "tr");
			
			// stop on non-found lines
			if(tr && Element.hasClassName(tr, 'notfound')) {
				Event.stop(e);
				return false;
			}
			
			// normal behaviour for input elements
			if(el.nodeName == "INPUT" || input.length > 0) {
				return true;
			}
			
			try {
				var table = Event.findElement(e,"table");
				if(Event.element(e).nodeName == "IMG") {
					link = Event.findElement(e,"a");
					popupLink = link.href+"?ajax=1";
				} else {
					el = Event.findElement(e,"tr");
					var link = $$("a",el)[0];
					popupLink = link.href;
				}
			} catch(err) {
				// no link found
				Event.stop(e);
				return false;
			}
			// no link found
			if(!link || popupLink.length == 0) {
				Event.stop(e);
				return false;
			}
		}
		
		if(this.GB_Caption) {
			var title = this.GB_Caption;
		} else {
			// Getting the title from the URL is pretty ugly, but it works for now
			type = popupLink.match(/[0-9]+\/([^\/?&]*)([?&]|$)/);
			var title = (type && type[1]) ? type[1].ucfirst() : "";
		}
		
		// reset internal greybox callbacks, they are not properly unregistered
		// and fire multiple times on each subsequent popup close action otherwise
		if(GB_ONLY_ONE) GB_ONLY_ONE.callback_fn = [];
		
		GB_show(
			title, 
			popupLink, 
			this.popupHeight, 
			this.popupWidth,
			this.refresh.bind(this)
		);
		
		if(e) {
			Event.stop(e);
		}
		return false;
	}
}

ComplexTableField.applyTo('div.ComplexTableField');