/**
 * EGroupware - Calendar - Javascript UI
 *
 * @link http://www.egroupware.org
 * @package calendar
 * @author Hadi Nategh	<hn-AT-stylite.de>
 * @copyright (c) 2008-13 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
 * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
 * @version $Id$
 */

/*egw:uses
	/etemplate/js/etemplate2.js
*/

/**
 * UI for calendar
 *
 * @augments AppJS
 */
app.classes.calendar = AppJS.extend(
{
	/**
	 * application name
	 */
	appname: 'calendar',

	/**
	 * Constructor
	 *
	 * @memberOf app.calendar
	 */
	init: function()
	{
		// call parent
		this._super.apply(this, arguments);

		// make calendar object available, even if not running in top window, as sidebox does
		if (window.top !== window && typeof window.top.app.calendar == 'undefined')
		{
			window.top.app.calendar = this;
		}
		//Drag_n_Drop
		this.drag_n_drop();
	},

	/**
	 * Destructor
	 */
	destroy: function()
	{
		// call parent
		this._super.apply(this, arguments);

		// remove top window reference
		if (window.top !== window && window.top.app.calendar === this)
		{
				delete window.top.app.calendar;
		}
	},

	/**
	 * This function is called when the etemplate2 object is loaded
	 * and ready.  If you must store a reference to the et2 object,
	 * make sure to clean it up in destroy().
	 *
	 * @param et2 etemplate2 Newly ready object
	 */
	et2_ready: function(et2)
	{
		// call parent
		this._super.apply(this, arguments);
		var content = this.et2.getArrayMgr('content');

		if (typeof et2.templates['calendar.list'] != 'undefined')
		{
			try {
				// check if listview runs in an iframe --> use linkHandler to open it top-level
				if (top.egw && top != window && window.framework)
				{
					window.framework.linkHandler(document.location.href+'&ajax=true', 'calendar');
				}
			}
			catch(e) {
				// ignore error eg. comming because we have a top not belonging to EGroupware
			}
			this.filter_change();
		}
		if (typeof et2.templates['calendar.edit'] != 'undefined' && typeof content.data['conflicts'] == 'undefined')
		{
			$j(document.getElementById('calendar-edit_calendar-delete_series')).hide();
			//Check if it's fallback from conflict window or it's from edit window
			if (content.data['button_was'] != 'freetime')
			{
				this.set_enddate_visibility();
				this.check_recur_type();
				this.et2.getWidgetById('recur_exception').set_disabled(typeof content.data['recur_exception'][0] == 'undefined');
			}
			else
			{
				this.freetime_search();
			}
			//send Syncronus ajax request to the server to unlock the on close entry
			//set onbeforeunload with json request to send request when the window gets close by X button
			window.onbeforeunload = function () {
				this.egw.json('calendar.calendar_uiforms.ajax_unlock'
				, [content.data['id'],content.data['lock_token']],null,true,null,null).sendRequest(true);
			};
		}
		//this.replace_eTemplate_onsubmit();
		if (typeof et2.templates['calendar.freetimesearch'] != 'undefined')
		{
			this.set_enddate_visibility();
		}
	},

	/**
	 * Link hander for jDots template to just reload our iframe, instead of reloading whole admin app
	 *
	 * @param {String} _url
	 * @return {boolean|string} true, if linkHandler took care of link, false for default processing or url to navigate to
	 */
	linkHandler: function(_url)
	{
		if (_url.match('menuaction=calendar.calendar_uiviews.index'))
		{
			var state = this.getState();
			if (state.view == 'listview')
			{
				return _url.replace(/menuaction=[^&]+/, 'menuaction=calendar.calendar_uilist.listview&ajax=true');
			}
		}
		// can not load our own index page, has to be done by framework
		return false;
	},

	/**
	 * Drag and Drop
	 *
	 *
	 */
	drag_n_drop: function()
	{
		var that = this;

		//Draggable
		jQuery("div[id^='drag_']").draggable(
		{
			stack: jQuery("div[id^='drag_']"),
			revert: "invalid",
			delay: 50,

			cursorAt:{top:0,left:0},
			containment: ".egw_fw_content_browser_iframe",
			scroll: true,
			opacity: .6,
			cursor: "move",

			stop: function(ui,event)
			{
				event.helper.width(oldWidth);
				event.helper[0].innerHTML = oldInnerHTML;
			},
			drag:function(ui, event)
			{
				//that.dragEvent();
			},
			start: function(ui, event)
			{
				oldInnerHTML = event.helper[0].innerHTML;
				oldWidth = event.helper.width();
				event.helper.width(jQuery("#calColumn").width());
			}
		}).resizable({
				//scroll:true,
				create:function(ui,event)
				{
					var resizeHelper = ui.target.getAttribute('data-resize').split("|")[3];
					if (resizeHelper == 'WD' )
					{
						$j(this).resizable('destroy');
					}
				},
				start:function(ui,event)
				{
					var resizeHelper = ui.target.getAttribute('data-resize');
					var dataResize = resizeHelper.split("|");
					var time = dataResize[1].split(":");
					dropDate = dataResize[0]+"T"+time[0]+time[1];
					var calOwner = this.getAttribute('id').substring(this.getAttribute('id').lastIndexOf("_O")+2,this.getAttribute('id').lastIndexOf("_C"));
					if(jQuery("div[id^='drop_"+dropDate+"']")[0].getAttribute('id').match(/_O[0-9]/g) == "_O0")
						calOwner = 0;

					drop = jQuery("div[id^='drop_"+dropDate+"_O"+calOwner+"']");
				},
				stop:function(ui,event)
				{
					var eventFlag = ui.target.getAttribute('data-resize').split("|")[3];
					that.dropEvent(this.getAttribute('id'),dropDate,newDuration,eventFlag);
				},
				resize:function(ui,event)
				{
					var dataResize = ui.target.getAttribute('data-resize').split("|");
					newDuration = Math.round(this.clientHeight/drop[0].clientHeight)*  parseInt(dataResize[2]) * 60;
					var hours = Math.floor( newDuration / 3600);
					var minutes = (newDuration/60) % 60;

					this.innerHTML = '<div style="font-size: 1.1em; font-weight: bold; text-align: center;">'+hours+'h'+minutes+'</div>';
				}

			});

		//Droppable
		jQuery("div[id^='drop_']").droppable(
			{
				accept:function()
				{
					return true;
				},
				tolerance:'pointer',

				drop:function(id, event)
				{
					var dgId = event.draggable[0].getAttribute('id');
					var dgOwner = dgId.substring(dgId.lastIndexOf("_C")+2,dgId.lastIndexOf(""));
					var dpOwner = id.target.getAttribute('data-owner');
					var eventFlag = event.draggable[0].getAttribute('data-resize').split("|")[3];
					if (dpOwner == null) dpOwner = dgOwner;
					if (dpOwner == dgOwner )
					{
						that.dropEvent(event.draggable[0].id, id.target.getAttribute('id').substring(id.target.getAttribute('id').lastIndexOf("drop_")+5, id.target.getAttribute('id').lastIndexOf("_O")),null,eventFlag);
					}
					else
					{
						jQuery(event.draggable).draggable("option","revert",true);
					}

				},
				over:function(ui, event)
				{
					var timeDemo = ui.target.id.substring(ui.target.id.lastIndexOf("T")+1,ui.target.id.lastIndexOf("_O"));
					var dgId = event.draggable[0].getAttribute('id');
					var dgOwner = dgId.substring(dgId.lastIndexOf("_C")+2,dgId.lastIndexOf(""));
					var dpOwner = ui.target.getAttribute('data-owner');
					if (dpOwner == null) dpOwner = dgOwner;
					if (dpOwner === dgOwner )
					{
						event.helper[0].innerHTML = '<div class="calendar_d-n-d_timeCounter">'+timeDemo+'</div>';
					}
					else
					{
						event.helper[0].innerHTML = '<div class="calendar_d-n-d_forbiden"></div>';
					}
				}
			});

		//onClick Handler for calender entries
		jQuery("div.calendar_calEvent").on({
			click:function(ev){
				var Id = ev.currentTarget.id.replace(/drag_/g,'').split("_")[0];
				var eventId = Id.match(/-?\d+\.?\d*/g)[0];
				var appName = Id.replace(/-?\d+\.?\d*/g,'');
				var startDate = ev.currentTarget.getAttribute('data-resize').split("|")[0];
				var eventFlag = ev.currentTarget.getAttribute('data-resize').split("|")[3];
				if (eventFlag != 'S')
				{
					that.egw.open(eventId,appName !=""?appName:'calendar','edit');
				}
				else
				{
					that.edit_series(eventId,startDate);
				}
			},
			mouseover: function(){

				var ttp = jQuery(this).tooltip({
					items: "[data-tooltip]",
					content: function()
					{
						var elem = jQuery(this);
						if (elem.is("[data-tooltip]"))
							return this.getAttribute('data-tooltip') ;
					},
					track:true,

					open: function(event,ui){
						ui.tooltip.removeClass("ui-tooltip");
						ui.tooltip.addClass("calendar_uitooltip");
					}
				});
				ttp.tooltip("enable");
			},
			mousedown: function(){
				jQuery(this).tooltip("disable");
			}
		});

		//Click handler for calendar todos
		jQuery("div.calendar_calDayTodos").find("[data-todo^='app|']").on({
			click:function(ev)
			{
				var windowSize = ev.currentTarget.getAttribute('data-todo').split("|")[1];
				var link = ev.currentTarget.getAttribute('href');
				that.egw.open_link(link,'_blank',windowSize);
				return false;
			}
		});

		//Click Handler for calendar planner
		jQuery("div.calendar_plannerEvent").on({
			click:function(ev){
				var eventId = ev.currentTarget.getAttribute('data-date').split("|")[1];
				var startDate = ev.currentTarget.getAttribute('data-date').split("|")[0];
				var recurrFlag = ev.currentTarget.getAttribute('data-date').split("|")[2];
				if (recurrFlag == "n")
				{
					egw.open(eventId,'calendar','edit');
				}
				else
				{
					that.edit_series(eventId,startDate);
				}
			},
			mouseover: function(){

				var ttp = jQuery(this).tooltip({
					items: "[data-tooltip]",
					content: function()
					{
						var elem = jQuery(this);
						if (elem.is("[data-tooltip]"))
							return this.getAttribute('data-tooltip') ;
					},
					track:true,

					open: function(event,ui){
						ui.tooltip.removeClass("ui-tooltip");
						ui.tooltip.addClass("calendar_uitooltip");
					}
				});
				ttp.tooltip("enable");
			},
			mousedown: function(){
				jQuery(this).tooltip("disable");
			}
		});

		//onClick Handler for calendar cells
		jQuery("div.calendar_calAddEvent").click(function(ev)
		{
			var timestamp = ev.target.getAttribute('data-date').split("|");
			var owner = ev.target.getAttribute('id').split("_");

			var ownerId = owner[2].match( /Ogroup/g)?owner[2].replace( /Ogroup/g, '-'):owner[2].replace( /^\D+/g, '');
			if (owner[2].match( /Or/g))
			{
				ownerId = 'r' + ownerId;
			}
			var date = timestamp[0];
			var hour = timestamp[1];
			var minute = timestamp[2];
			if (ownerId == 0)
			{
				that.egw.open_link('calendar.calendar_uiforms.edit&date='+date+'&hour='+hour+'&minute='+minute,'_blank','700x700');
			}
			else
			{
				that.egw.open_link('calendar.calendar_uiforms.edit&date='+date+'&hour='+hour+'&minute='+minute+'&owner='+ownerId,'_blank','700x700');
			}
		});

	},

	/**
	 * DropEvent
	 *
	 * @param {string} _id dragged event id
	 * @param {array} _date array of date,hour, and minute of dropped cell
	 * @param {string} _duration description
	 * @param {string} _eventFlag Flag to distinguesh wheter the event is Whole Day, Series, or Single
	 */
	dropEvent : function(_id, _date, _duration, _eventFlag)
	{
		var eventId = _id.substring(_id.lastIndexOf("drag_")+5,_id.lastIndexOf("_O"));
		var calOwner = _id.substring(_id.lastIndexOf("_O")+2,_id.lastIndexOf("_C"));
		var eventOwner = _id.substring(_id.lastIndexOf("_C")+2,_id.lastIndexOf(""));
		var date = _date;
		var moveOrder = false;

		if (_eventFlag == 'S')
		{
			et2_dialog.show_dialog(function(_button_id)
						{
							if (_button_id == et2_dialog.OK_BUTTON)
							{
								xajax_doXMLHTTP(
									'calendar.calendar_ajax.moveEvent',
									eventId,
									calOwner,
									date,
									eventOwner,
									_duration
								);
							}							
						},this.egw.lang("Do you really want to change the start of this series? If you do, the original series will be terminated as of today and a new series for the future reflecting your changes will be created."),
					this.egw.lang("This event is part of a series"), {}, et2_dialog.BUTTONS_OK_CANCEL , et2_dialog.WARNING_MESSAGE);
		}
		else
		{
			moveOrder = true;
		}
		if (moveOrder)
		{
			xajax_doXMLHTTP(
					'calendar.calendar_ajax.moveEvent',
					eventId,
					calOwner,
					date,
					eventOwner,
					_duration
				);
		}
	},
	/**
	 * open the freetime search popup
	 *
	 * @param {string} _link
	 */
	freetime_search_popup: function(_link)
	{
		this.egw.open_link(_link,'ft_search','700x500') ;
	},

	/**
	 * send an ajax request to server to set the freetimesearch window content
	 *
	 */
	freetime_search: function()
	{
		var content = this.et2.getArrayMgr('content').data;
		content['start'] = this.et2.getWidgetById('start').get_value();
		content['end'] = this.et2.getWidgetById('end').get_value();
		content['duration'] = this.et2.getWidgetById('duration').get_value();

		var request = this.egw.json('calendar.calendar_uiforms.ajax_freetimesearch', [content],null,null,null,null);
		request.sendRequest();
	},

	/**
	 * Function for disabling the recur_data multiselect box
	 *
	 */
	check_recur_type: function()
	{
		var recurType = this.et2.getWidgetById('recur_type');
		var recurData = this.et2.getWidgetById('recur_data');

		if(recurType && recurData)
		{
			recurData.set_disabled(recurType.get_value() != 2);
		}
	},

	/**
	 * Show/Hide end date, for both edit and freetimesearch popups,
	 * based on if "use end date" selected or not.
	 *
	 */
	set_enddate_visibility: function()
	{
		var duration = this.et2.getWidgetById('duration');
		var end = this.et2.getWidgetById('end');
		if (typeof duration != 'undefined' && typeof end != 'undefined')
		{
			end.set_disabled(duration.get_value()!=='');
		}
	},

	/**
	 * handles actions selectbox in calendar edit popup
	 *
	 * @param {mixed} _event
	 * @param {et2_base_widget} widget "actions selectBox" in edit popup window
	 */
	actions_change: function(_event, widget)
	{
		var event = this.et2.getArrayMgr('content').data;
		if (widget)
		{
			var id = this.et2.getArrayMgr('content').data['id'];
			switch (widget.get_value())
			{
				case 'print':
					this.egw.open_link('calendar.calendar_uiforms.edit&cal_id='+id+'&print=1','_blank','700x700');
					this.et2._inst.submit();
					break;
				case 'mail':
					this.egw.json('calendar.calendar_uiforms.ajax_custom_mail', [event, !event['id'], false],null,null,null,null).sendRequest();
					this.et2._inst.submit();
					break;
				case 'sendrequest':
					this.egw.json('calendar.calendar_uiforms.ajax_custom_mail', [event, !event['id'], true],null,null,null,null).sendRequest();
					this.et2._inst.submit();
					break;
				case 'infolog':
					this.egw.open_link('infolog.infolog_ui.edit&action=calendar&action_id='+($j.isPlainObject(event)?event['id']:event),'_self','700x600','infolog');
					this.et2._inst.submit();
					break;
				default:
					this.et2._inst.submit();
			}
		}
	},

	/**
	 * open mail compose popup window
	 *
	 * @param {Array} vars
	 * @todo need to provide right mail compose from server to custom_mail function
	 */
	custom_mail: function (vars)
	{
		this.egw.open_link('mail.mail_compose.compose&','_blank','700x700');
	},

	/**
	 * control delete_series popup visibility
	 *
	 * @param {et2_widget} widget
	 * @param {Array} exceptions an array contains number of exception entries
	 *
	 */
	delete_btn: function(widget,exceptions)
	{
		var content = this.et2.getArrayMgr('content').data;

		if (exceptions)
		{
			$j(document.getElementById('calendar-edit_calendar-delete_series')).show();
		}
		else if (content['recur_type'] !== 0)
		{
			et2_dialog.confirm(widget,'Delete this series of recuring events','Delete Series');
		}
		else
		{
			et2_dialog.confirm(widget,'Delete this event','Delete');
		}
	},

	/**
	 * print_participants_status(egw,widget)
	 * Handle to apply changes from status in print popup
	 *
	 * @param {mixed} _event
	 * @param {et2_base_widget} widget widget "status" in print popup window
	 *
	 */
	print_participants_status: function(_event, widget)
	{
		if (widget && window.opener)
		{
			//Parent popup window
			var editPopWindow = window.opener;

			if (editPopWindow)
			{
				//Update paretn popup window
				editPopWindow.etemplate2.getByApplication('calendar')[0].widgetContainer.getWidgetById(widget.id).set_value(widget.get_value());
			}
			this.et2._inst.submit();

			editPopWindow.opener.egw_refresh('status changed','calendar');
		}
		else if (widget)
		{
			window.egw_refresh(this.egw.lang('The original popup edit window is closed! You need to close the print window and reopen the entry again.'),'calendar');
		}
	},

	/**
	 * Handles to select freetime, and replace the selected one on Start,
	 * and End date&time in edit calendar entry popup.
	 *
	 * @param {mixed} _event
	 * @param {et2_base_widget} _widget widget "select button" in freetime search popup window
	 *
	 */
	freetime_select: function(_event, _widget)
	{
		if (_widget)
		{
			var content = this.et2._inst.widgetContainer.getArrayMgr('content').data;
			// Make the Id from selected button by checking the index
			var selectedId = _widget.id.match(/^select\[([0-9])\]$/i)[1];

			var sTime = this.et2.getWidgetById(selectedId+'start');

			var eTime = this.et2.getWidgetById(selectedId+'[end]');
			 //Catches the start time from freetime content
			var str = sTime.get_value();

			var end = parseInt(str) + parseInt(content['duration']);

			//check the parent window is still open before to try to access it
			if (window.opener)
			{
				var editWindowObj = window.opener.etemplate2.getByApplication('calendar')[0];
				if (typeof editWindowObj != "undefined")
				{
					var startTime = editWindowObj.widgetContainer.getWidgetById('start');
					var endTime = editWindowObj.widgetContainer.getWidgetById('end');
					if (startTime && endTime)
					{
						startTime.set_value(str);
						endTime.set_value(end);
					}
				}
			}
			else
			{
				alert(this.egw.lang('The original calendar edit popup is closed!'));
			}
		}
		window.close();
	},

	/**
	 * show/hide the filter of nm list in calendar listview
	 *
	 */
	filter_change: function()
	{
		var filter = this.et2.getWidgetById('filter');
		var dates = this.et2.getWidgetById('calendar.list.dates');

		if (filter && dates)
		{
			dates.set_disabled(filter.value !== "custom");
		}
	},

	/**
	 * this function try to fix ids which are from integrated apps
	 *
	 * @param {egw_action} _action
	 * @param {Array} _senders
	 */
	cal_fix_app_id: function(_action, _senders)
	{
		var app = 'calendar';
		var id = _senders[0].id;
		var matches = id.match(/^(?:calendar::)?([0-9]+)(:([0-9]+))?$/);
		if (matches)
		{
			id = matches[1];
		}
		else
		{
			matches = id.match(/^([a-z_-]+)([0-9]+)/i);
			if (matches)
			{
				app = matches[1];
				id = matches[2];
			}
		}
		var backup_url = _action.data.url;

		_action.data.url = _action.data.url.replace(/(\$|%24)id/,id);
		_action.data.url = _action.data.url.replace(/(\$|%24)app/,app);

		nm_action(_action, _senders);

		_action.data.url = backup_url;	// restore url
	},

	/**
	 * Open calendar entry, taking into accout the calendar integration of other apps
	 *
	 * calendar_uilist::get_rows sets var js_calendar_integration object
	 *
	 * @param _action
	 * @param _senders
	 *
	 */
	cal_open: function(_action, _senders)
	{
		var js_integration_data = this.et2.getArrayMgr('content').data.nm.js_integration_data;
		var id = _senders[0].id;
		var matches = id.match(/^(?:calendar::)?([0-9]+):([0-9]+)$/);
		var backup = _action.data;
		if (matches)
		{
			this.edit_series(matches[1],matches[2]);
			return;
		}
		matches = id.match(/^([a-z_-]+)([0-9]+)/i);
		if (matches)
		{
			var app = matches[1];
			_action.data.url = window.egw_webserverUrl+'/index.php?';
			var get_params = js_integration_data[app].edit;
			get_params[js_integration_data[app].edit_id] = matches[2];
			for(var name in get_params)
				_action.data.url += name+"="+encodeURIComponent(get_params[name])+"&";

			if (js_integration_data[app].edit_popup)
			{
				matches = js_integration_data[app].edit_popup.match(/^(.*)x(.*)$/);
				if (matches)
				{
					_action.data.width = matches[1];
					_action.data.height = matches[2];
				}
				else
				{
					_action.data.nm_action = 'location';
				}
			}
		}
		egw.open(id.replace(/^calendar::/g,''),'calendar','edit');
		_action.data = backup;	// restore url, width, height, nm_action
	},

	/**
	 * Delete calendar entry, asking if you want to delete series or exception
	 *
	 *
	 * @param _action
	 * @param _senders
	 */
	cal_delete: function(_action, _senders)
	{
		var backup = _action.data;
		var matches = false;

		// Loop so we ask if any of the selected entries is part of a series
		for(var i = 0; i < _senders.length; i++)
		{
			var id = _senders[i].id;
			if(!matches)
			{
				matches = id.match(/^(?:calendar::)?([0-9]+):([0-9]+)$/);
			}
		}
		if (matches)
		{
			var id = matches[1];
			var date = matches[2];
			var popup = jQuery(document.getElementById(_action.getManager().etemplate_var_prefix + '[' + _action.id + '_popup]'));
			var row = null;

			// Cancel normal confirm
			delete _action.data.confirm;
			delete _action.data.confirm_multiple;

			// nm action - show popup
			nm_open_popup(_action,_senders);

			if(!popup)
			{
				return;
			}
			row = jQuery("#"+id+"\\:"+date);
			if (row)
			{
				// Open at row
				popup.css({
					position: "absolute",
					top: row.position().top + row.height() -popup.height()/2,
					left: $j(window).width()/2-popup.width()/2
				});
			} else {
				// Open popup in the middle
				popup.css({
					position: "absolute",
					top: $j(window).height()/2-popup.height()/2,
					left: $j(window).width()/2-popup.width()/2
				});
			}
			return;
		}

		console.log(_action);
		nm_action(_action, _senders);

		_action.data = backup;	// restore url, width, height, nm_action
	},

	/**
	 * Confirmation dialog for moving a series entry
	 *
	 * @param {object} _DOM
	 * @param {et2_widget} _button button Save | Apply
	 */
	move_edit_series: function(_DOM,_button)
	{
		var content = this.et2.getArrayMgr('content').data;
		var start_date = this.et2.getWidgetById('start').get_value();
		var whole_day = this.et2.getWidgetById('whole_day').get_value();
		var button = _button;
		var that = this;
		if (typeof content != 'undefined' && typeof content.recur_type != 'undefined' && content.recur_type != 0)
		{
			if (content.start != start_date || content.whole_day.toString() != whole_day)
			{
				et2_dialog.show_dialog(function(_button_id)
					{
						if (_button_id == et2_dialog.OK_BUTTON)
						{
							that.et2._inst.submit(button);

						}
						else
						{
							return false;
						}
					},
					this.egw.lang("Do you really want to change the start of this series? If you do, the original series will be terminated as of today and a new series for the future reflecting your changes will be created."),
					this.egw.lang("This event is part of a series"), {}, et2_dialog.BUTTONS_OK_CANCEL , et2_dialog.WARNING_MESSAGE);
			}
			else
			{
				return true;
			}
		}
		else
		{
			return true;
		}
	},

	/**
	 * Create edit exception dialog for recurrence entries
	 *
	 * @param {object} event
	 * @param {string} id cal_id
	 * @param {integer} date timestamp
	 */
	edit_series: function(event,id,date)
	{
		// Coming from list, there is no event
		if(arguments.length == 2)
		{
			date = id;
			id = event;
			event = null;
		}
		var edit_id = id;
		var edit_date = date;
		var that = this;
		var buttons = [
			{text: this.egw.lang("Edit exception"), id: "exception", class: "ui-priority-primary", "default": true},
			{text: this.egw.lang("Edit series"), id:"series"},
			{text: this.egw.lang("Cancel"), id:"cancel"}
		];
		et2_dialog.show_dialog(function(_button_id)
		{
			switch(_button_id)
			{
				case 'exception':
					that.egw.open(edit_id, 'calendar', 'edit', '&date='+edit_date+'&exception=1');
					break;
				case 'series':
					that.egw.open(edit_id, 'calendar', 'edit', '&date='+edit_date);
					break;
				case 'cancel':

				default:
					break;
			}
		},this.egw.lang("Do you want to edit this event as an exception or the whole series?"),
		this.egw.lang("This event is part of a series"), {}, buttons, et2_dialog.WARNING_MESSAGE);
	},

	/**
	 * Current state, get updated via set_state method
	 *
	 * @type object
	 */
	state: undefined,

	/**
	 * Method to set state for JSON requests (jdots ajax_exec or et2 submits can NOT use egw.js script tag)
	 *
	 * @param {object} _state
	 */
	set_state: function(_state)
	{
		if (typeof _state == 'object')
		{
			this.state = _state;
		}
	},

	/**
	 * Return state object defining current view
	 *
	 * Called by favorites to query current state.
	 *
	 * @return {object} description
	 */
	getState: function()
	{
		var state = this.state;

		if (!state)
		{
			var egw_script_tag = document.getElementById('egw_script_id');
			state = egw_script_tag.getAttribute('data-calendar-state');
			state = state ? JSON.parse(state) : {};
		}
		// we are currently in list-view
		if (this.et2 && this.et2.getWidgetById('nm'))
		{
			jQuery.extend(state, this._super.apply(this, arguments));	// call default implementation
		}

		return state;
	},

	/**
	 * Set a state previously returned by getState
	 *
	 * Called by favorites to set a state saved as favorite.
	 *
	 * @param {object} state containing "name" attribute to be used as "favorite" GET parameter to a nextmatch
	 */
	setState: function(state)
	{
		// State should be an object, not a string, but we'll parse
		if(typeof state == "string")
		{
			if(state.indexOf('{') != -1 || state =='null')
			{
				state = JSON.parse(state);
			}
		}

		// old calendar state handling on server-side (incl. switching to and from listview)
		var menuaction = 'calendar.calendar_uiviews.index';
		if (typeof state.state != 'undefined' && state.state.view == 'undefined' || state.state.view == 'listview')
		{
			// check if we already use et2 / are in listview
			if (this.et2)
			{
				// current calendar-code can set regular calendar states only via a server-request :(
				// --> check if we only need to set something which can be handeled by nm internally
				// or we need a redirect
				// ToDo: pass them via nm's get_rows call to server (eg. by passing state), so we dont need a redirect
				var current_state = this.getState();
				var need_redirect = false;
				for(var attr in current_state)
				{
					switch(attr)
					{
						case 'cat_id':
						case 'owner':
						case 'filter':
							if (state.state[attr] != current_state[attr])
							{
								need_redirect = true;
								break;
							}
							break;
					}
				}
				if (!need_redirect)
				{
					return this._super.apply(this, [state]);
				}
			}
			menuaction = 'calendar.calendar_uilist.listview';
			state.state.ajax = 'true';
			if (state.name)
			{
				state.state.favorite = state.name.replace(/[^A-Za-z0-9-_]/g, '_');
			}
		}
		var query = jQuery.extend({menuaction: menuaction},state.state||{});

		// prepend an owner 0, to reset all owners and not just set given resource type
		if(typeof query.owner != 'undefined')
		{
			query.owner = '0,'+ query.owner;
		}

		this.egw.open_link(this.egw.link('/index.php',query), 'calendar');

		// Stop the normal bubbling if this is called on click
		return false;
	}
});