gecko-dev/calendar/resources/content/unifinder.js

846 lines
27 KiB
JavaScript

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is OEone Calendar Code, released October 31st, 2001.
*
* The Initial Developer of the Original Code is
* OEone Corporation.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s): Garth Smedley <garths@oeone.com>
* Mike Potter <mikep@oeone.com>
* Chris Charabaruk <coldacid@meldstar.com>
* Colin Phillips <colinp@oeone.com>
* ArentJan Banck <ajbanck@planet.nl>
* Eric Belhaire <eric.belhaire@ief.u-psud.fr>
* Matthew Willis <mattwillis@gmail.com>
* Michiel van Leeuwen <mvl@exedo.nl>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*-----------------------------------------------------------------
* U N I F I N D E R
*
* This is a hacked in interface to the unifinder. We will need to
* improve this to make it usable in general.
*/
const UnifinderTreeName = "unifinder-search-results-listbox";
const kEventStatusOrder = ["TENTATIVE", "CONFIRMED", "CANCELLED"];
var gCalendarEventTreeClicked = false; //set this to true when the calendar event tree is clicked
//to allow for multiple selection
var gEventArray = new Array();
// Store the start and enddate, because the providers can't be trusted when
// dealing with all-day events. So we need to filter later. See bug 306157
var gStartDate;
var gEndDate;
var kDefaultTimezone;
function resetAllowSelection()
{
/*
Do not change anything in the following lines, they are needed as described in the
selection observer above
*/
doingSelection = false;
var SearchTree = document.getElementById( UnifinderTreeName );
SearchTree.view.selection.selectEventsSuppressed = false;
SearchTree.addEventListener( "select", unifinderOnSelect, true );
}
var doingSelection = false;
function selectSelectedEventsInTree( EventsToSelect )
{
if( doingSelection === true )
return;
doingSelection = true;
if( EventsToSelect === false )
EventsToSelect = gCalendarWindow.EventSelection.selectedEvents;
var SearchTree = document.getElementById( UnifinderTreeName );
/* The following is a brutal hack, caused by
http://lxr.mozilla.org/mozilla1.0/source/layout/xul/base/src/tree/src/nsTreeSelection.cpp#555
and described in bug 168211
http://bugzilla.mozilla.org/show_bug.cgi?id=168211
Do NOT remove anything in the next 3 lines, or the selection in the tree will not work.
*/
SearchTree.onselect = null;
SearchTree.removeEventListener( "select", unifinderOnSelect, true );
SearchTree.view.selection.selectEventsSuppressed = true;
if( EventsToSelect.length == 1 )
{
var RowToScrollTo = SearchTree.eventView.getRowOfCalendarEvent( EventsToSelect[0] );
if( RowToScrollTo != "null" )
{
SearchTree.view.selection.clearSelection( );
SearchTree.treeBoxObject.ensureRowIsVisible( RowToScrollTo );
SearchTree.view.selection.timedSelect( RowToScrollTo, 1 );
}
else
{
SearchTree.view.selection.clearSelection( );
}
}
else if( EventsToSelect.length > 1 )
{
SearchTree.view.selection.clearSelection( );
for (var i in EventsToSelect) {
var row = SearchTree.eventView.getRowOfCalendarEvent(EventsToSelect[i]);
SearchTree.view.selection.rangedSelect(row,row,true);
}
}
else
{
SearchTree.view.selection.clearSelection( );
}
/* This needs to be in a setTimeout */
setTimeout( "resetAllowSelection()", 1 );
}
/**
* Observer for the calendar event data source. This keeps the unifinder
* display up to date when the calendar event data is changed
*/
var unifinderObserver = {
mInBatch: false,
QueryInterface: function (aIID) {
if (!aIID.equals(Components.interfaces.nsISupports) &&
!aIID.equals(Components.interfaces.calICompositeObserver) &&
!aIID.equals(Components.interfaces.calIObserver))
{
throw Components.results.NS_ERROR_NO_INTERFACE;
}
return this;
},
// calIObserver:
onStartBatch: function() {
this.mInBatch = true;
},
onEndBatch: function() {
this.mInBatch = false;
refreshEventTree();
},
onLoad: function() {
if (!this.mInBatch)
refreshEventTree();
},
onAddItem: function(aItem) {
if (!(aItem instanceof Components.interfaces.calIEvent) ||
this.mInBatch) {
return;
}
this.addItemToTree(aItem);
},
onModifyItem: function(aNewItem, aOldItem) {
if (!(aNewItem instanceof Components.interfaces.calIEvent) ||
this.mInBatch) {
return;
}
this.removeItemFromTree(aOldItem);
this.addItemToTree(aNewItem);
},
onDeleteItem: function(aDeletedItem) {
if (!(aDeletedItem instanceof Components.interfaces.calIEvent) ||
this.mInBatch) {
return;
}
this.removeItemFromTree(aDeletedItem);
},
dateFilter: function(event) {
return ((!gEndDate || gEndDate.compare(event.startDate) >= 0) &&
(!gStartDate || gStartDate.compare(event.endDate) < 0));
},
// It is safe to call these for any event. The functions will determine
// whether or not anything actually needs to be done to the tree
addItemToTree: function(aItem) {
var items;
if (gStartDate && gEndDate) {
items = aItem.getOccurrencesBetween(gStartDate, gEndDate, {});
} else {
items = [aItem];
}
items = items.filter(this.dateFilter);
gEventArray = gEventArray.concat(items);
gEventArray.sort(compareEvents);
var tree = document.getElementById("unifinder-search-results-listbox");
for each (var item in items) {
var row = tree.eventView.getRowOfCalendarEvent(item);
tree.treeBoxObject.rowCountChanged(row, 1);
}
},
removeItemFromTree: function(aItem) {
var items;
if (gStartDate && gEndDate && (aItem.parentItem == aItem)) {
items = aItem.getOccurrencesBetween(gStartDate, gEndDate, {});
} else {
items = [aItem];
}
items = items.filter(this.dateFilter);
var tree = document.getElementById("unifinder-search-results-listbox");
for each (var item in items) {
var row = tree.eventView.getRowOfCalendarEvent(item);
gEventArray.splice(row, 1);
tree.treeBoxObject.rowCountChanged(row, -1);
}
},
onError: function(aErrNo, aMessage) {},
// calICompositeObserver:
onCalendarAdded: function(aDeletedItem) {
if (!this.mInBatch)
refreshEventTree();
},
onCalendarRemoved: function(aDeletedItem) {
if (!this.mInBatch)
refreshEventTree();
},
onDefaultCalendarChanged: function(aNewDefaultCalendar) {}
};
/**
* Called when the calendar is loaded
*/
function prepareCalendarUnifinder( )
{
// tell the unifinder to get ready
var unifinderEventSelectionObserver =
{
onSelectionChanged : function( EventSelectionArray )
{
selectSelectedEventsInTree( EventSelectionArray );
}
}
gCalendarWindow.EventSelection.addObserver( unifinderEventSelectionObserver );
// set up our calendar event observer
var ccalendar = getCompositeCalendar();
ccalendar.addObserver(unifinderObserver);
kDefaultTimezone = calendarDefaultTimezone();
// Listen for changes in the selected day, so we can update if need be
var viewDeck = document.getElementById("view-deck")
viewDeck.addEventListener("dayselect", unifinderOnDaySelect, false);
refreshEventTree(); //Display something upon first load. onLoad doesn't work properly for observers
}
/**
* Called when the calendar is unloaded
*/
function finishCalendarUnifinder( )
{
var ccalendar = getCompositeCalendar();
ccalendar.removeObserver(unifinderObserver);
}
function unifinderOnDaySelect() {
var filterList = document.getElementById("event-filter-menulist");
if (filterList.selectedItem.value == "current") {
refreshEventTree();
}
}
/**
* Helper function to display event datetimes in the unifinder
*/
function formatUnifinderEventDateTime(datetime)
{
var dateFormatter = Components.classes["@mozilla.org/calendar/datetime-formatter;1"]
.getService(Components.interfaces.calIDateTimeFormatter);
return dateFormatter.formatDateTime(datetime.getInTimezone(kDefaultTimezone));
}
/**
* This is attached to the ondblclik attribute of the events shown in the unifinder
*/
function unifinderDoubleClickEvent( event )
{
// we only care about button 0 (left click) events
if (event.button != 0) return;
// find event by id
var calendarEvent = getCalendarEventFromEvent( event );
if( calendarEvent != null )
editEvent(calendarEvent);
else
newEvent();
}
function getCalendarEventFromEvent( event )
{
var tree = document.getElementById( UnifinderTreeName );
var row = tree.treeBoxObject.getRowAt( event.clientX, event.clientY );
if( row != -1 && row < tree.view.rowCount )
{
return ( tree.eventView.getCalendarEventAtRow( row ) );
} else {
return ( null );
}
}
/**
* This is attached to the onclik attribute of the events shown in the unifinder
*/
function unifinderOnSelect( event )
{
if( event.target.view.selection.getRangeCount() == 0 )
return;
var ArrayOfEvents = new Array( );
gCalendarEventTreeClicked = true;
var calendarEvent;
//get the selected events from the tree
var tree = document.getElementById( UnifinderTreeName );
var start = new Object();
var end = new Object();
var numRanges = tree.view.selection.getRangeCount();
for (var t=0; t<numRanges; t++){
tree.view.selection.getRangeAt(t,start,end);
for (var v=start.value; v<=end.value; v++){
try {
calendarEvent = tree.eventView.getCalendarEventAtRow( v );
}
catch( e )
{
dump( "e is "+e+"\n" );
return;
}
ArrayOfEvents.push( calendarEvent );
}
}
if( ArrayOfEvents.length == 1 )
{
/*start date is either the next or last occurence, or the start date of the event */
var eventStartDate = calendarEvent.startDate.jsDate;
/* you need this in case the current day is not visible. */
if( gCalendarWindow.currentView.getVisibleEvent( calendarEvent ) == false )
gCalendarWindow.currentView.goToDay( eventStartDate, true);
}
gCalendarWindow.EventSelection.setArrayToSelection( ArrayOfEvents );
}
function unifinderToDoHasFocus()
{
return( document.getElementById( ToDoUnifinderTreeName ).treeBoxObject.focused );
}
/**
* This is called from the unifinder when a key is pressed in the search field
*/
var gSearchTimeout = null;
function searchKeyPress( searchTextItem, event )
{
// 13 == return
if (event && event.keyCode == 13) {
clearSearchTimer();
refreshEventTree();
return;
}
// always clear the old one first
clearSearchTimer();
// make a new timer
gSearchTimeout = setTimeout( "refreshEventTree()", 400 );
}
function clearSearchTimer( )
{
if( gSearchTimeout )
{
clearTimeout( gSearchTimeout );
gSearchTimeout = null;
}
}
/*
** This function returns the event table.
*/
function changeEventFilter( event )
{
refreshEventTree();
/* The following isn't exactly right. It should actually reload after the next event happens. */
// get the current time
var now = new Date();
var tomorrow = new Date( now.getFullYear(), now.getMonth(), ( now.getDate() + 1 ) );
var milliSecsTillTomorrow = tomorrow.getTime() - now.getTime();
setTimeout( "refreshEventTree()", milliSecsTillTomorrow );
}
/**
* Redraw the categories unifinder tree
*/
var treeView =
{
get rowCount() { return gEventArray.length },
selectedColumn : null,
sortDirection : null,
sortStartedTime : new Date().getTime(), // updated just before sort
outParameter : new Object(), // used to obtain dates during sort
isContainer : function(){return false;},
getCellProperties : function(){return false;},
getColumnProperties : function(){return false;},
getRowProperties : function(){return false;},
isSorted : function(){return false;},
isEditable : function(){return true;},
isSeparator : function(){return false;},
getImageSrc : function(){return false;},
cycleHeader : function(col, element) // element parameter used in Moz1.7-
{ // not in Moz1.8+
var sortActive;
var treeCols;
// Moz1.8 trees require column.id, moz1.7 and earlier trees use column.
this.selectedColumn = (typeof(col)=="object" ? col.id : col);
if (!element) element = col.element; // in Moz1.8+, get element from col
sortActive = element.getAttribute("sortActive");
this.sortDirection = element.getAttribute("sortDirection");
if (sortActive != "true")
{
treeCols = document.getElementsByTagName("treecol");
for (var i = 0; i < treeCols.length; i++)
{
treeCols[i].removeAttribute("sortActive");
treeCols[i].removeAttribute("sortDirection");
}
sortActive = true;
this.sortDirection = "ascending";
}
else
{
sortActive = true;
if (this.sortDirection == "" || this.sortDirection == "descending")
{
this.sortDirection = "ascending";
}
else
{
this.sortDirection = "descending";
}
}
element.setAttribute("sortActive", sortActive);
element.setAttribute("sortDirection", this.sortDirection);
this.sortStartedTime = new Date().getTime(); // for null/0 dates in sort
gEventArray.sort( compareEvents );
document.getElementById( UnifinderTreeName ).view = this;
},
setTree : function( tree ){this.tree = tree;},
getCellText : function(row,column)
{
calendarEvent = gEventArray[row];
// Moz1.8 trees require column.id, moz1.7 and earlier trees use column.
switch( typeof(column)=="object" ? column.id : column )
{
case "unifinder-search-results-tree-col-title":
return( calendarEvent.title );
case "unifinder-search-results-tree-col-startdate":
return formatUnifinderEventDateTime(calendarEvent.startDate);
case "unifinder-search-results-tree-col-enddate":
var eventEndDate = calendarEvent.endDate.clone();
// XXX reimplement
//var eventEndDate = getCurrentNextOrPreviousRecurrence( calendarEvent );
if (calendarEvent.startDate.isDate) {
// display enddate is ical enddate - 1
eventEndDate.day = eventEndDate.day - 1;
eventEndDate.normalize();
}
return formatUnifinderEventDateTime(eventEndDate);
case "unifinder-search-results-tree-col-categories":
return( calendarEvent.getProperty("CATEGORIES") );
case "unifinder-search-results-tree-col-location":
return( calendarEvent.getProperty("LOCATION") );
case "unifinder-search-results-tree-col-status":
return getEventStatusString(calendarEvent);
case "unifinder-search-results-tree-col-calendarname":
return calendarEvent.calendar.name;
default:
return false;
}
}
}
function compareEvents( eventA, eventB )
{
var modifier = 1;
if (treeView.sortDirection == "descending")
{
modifier = -1;
}
switch(treeView.selectedColumn)
{
case "unifinder-search-results-tree-col-title":
return compareString(eventA.title, eventB.title) * modifier;
case "unifinder-search-results-tree-col-startdate":
var msNextStartA = msNextOrPreviousRecurrenceStart(eventA);
var msNextStartB = msNextOrPreviousRecurrenceStart(eventB);
return compareMSTime(msNextStartA, msNextStartB) * modifier;
case "unifinder-search-results-tree-col-enddate":
var msNextEndA = msNextOrPreviousRecurrenceEnd(eventA);
var msNextEndB = msNextOrPreviousRecurrenceEnd(eventB);
return compareMSTime(msNextEndA, msNextEndB) * modifier;
case "unifinder-search-results-tree-col-categories":
return compareString(eventA.getProperty("CATEGORIES"),
eventB.getProperty("CATEGORIES")) * modifier;
case "unifinder-search-results-tree-col-location":
return compareString(eventA.getProperty("LOCATION"),
eventB.getProperty("LOCATION")) * modifier;
case "unifinder-search-results-tree-col-status":
return compareNumber(kEventStatusOrder.indexOf(eventA.status),
kEventStatusOrder.indexOf(eventB.status)) * modifier;
case "unifinder-search-results-tree-col-calendarname":
return compareString(eventA.calendar.name, eventB.calendar.name) * modifier;
default:
return 0;
}
}
function compareString(a, b) {
a = nullToEmpty(a);
b = nullToEmpty(b);
return ((a < b) ? -1 :
(a > b) ? 1 : 0);
}
function nullToEmpty(value) {
return value == null? "" : value;
}
function compareMSTime(a, b) {
return ((a < b) ? -1 :
(a > b) ? 1 : 0);
}
function msNextOrPreviousRecurrenceStart( calendarEvent ) {
return calendarEvent.startDate.nativeTime;
// XXX reimplement the following
if (calendarEvent.recur && calendarEvent.start) {
treeView.outParameter.value = null; // avoid creating objects during sort
if (calendarEvent.getNextRecurrence(treeView.sortStartedTime,
treeView.outParameter) ||
calendarEvent.getPreviousOccurrence(treeView.sortStartedTime,
treeView.outParameter))
return treeView.outParameter.value;
}
return dateToMilliseconds(calendarEvent.start);
}
function msNextOrPreviousRecurrenceEnd(event) {
return event.endDate.nativeTime;
//XXX reimplement the following
var msNextStart = msNextOrPreviousRecurrenceStart(event);
var msDuration=dateToMilliseconds(event.endDate)-dateToMilliseconds(event.startDate);
return msNextStart + msDuration;
}
function dateToMilliseconds(date) {
// Treat null/0 as 'now' when sort started, so incomplete tasks stay current.
// Time is computed once per sort (just before sort) so sort is stable.
if (date == null)
return treeView.sortStartedTime;
var ms = date.getTime(); // note: date is not a javascript date.
if (ms == -62171262000000) // ms value for (0000/00/00 00:00:00)
return treeView.sortStartedTime;
return ms;
}
function calendarEventView( eventArray )
{
this.eventArray = eventArray;
}
calendarEventView.prototype.getCalendarEventAtRow = function( i )
{
return( gEventArray[ i ] );
}
calendarEventView.prototype.getRowOfCalendarEvent = function( Event )
{
for (var i in gEventArray) {
if (gEventArray[i].hasSameIds(Event))
return i;
}
return null;
}
function refreshEventTree( eventArray )
{
var savedThis = this;
var refreshListener = {
mEventArray: new Array(),
onOperationComplete: function (aCalendar, aStatus, aOperationType, aId, aDateTime) {
setTimeout(function () { refreshEventTreeInternal(refreshListener.mEventArray); }, 0);
},
onGetResult: function (aCalendar, aStatus, aItemType, aDetail, aCount, aItems) {
for (var i = 0; i < aCount; i++) {
refreshListener.mEventArray.push(aItems[i]);
}
}
};
var Today = new Date();
//do this to allow all day events to show up all day long
var StartDate = new Date( Today.getFullYear(), Today.getMonth(), Today.getDate(), 0, 0, 0 );
var EndDate;
var ccalendar = getCompositeCalendar();
var filter = 0;
filter |= ccalendar.ITEM_FILTER_TYPE_EVENT;
switch( document.getElementById( "event-filter-menulist" ).selectedItem.value )
{
case "all":
StartDate = null;
EndDate = null;
break;
case "today":
EndDate = new Date( StartDate.getTime() + ( 1000 * 60 * 60 * 24 ) - 1 );
break;
case "next7Days":
EndDate = new Date( StartDate.getTime() + ( 1000 * 60 * 60 * 24 * 8 ) );
break;
case "next14Days":
EndDate = new Date( StartDate.getTime() + ( 1000 * 60 * 60 * 24 * 15 ) );
break;
case "next31Days":
EndDate = new Date( StartDate.getTime() + ( 1000 * 60 * 60 * 24 * 32 ) );
break;
case "thisCalendarMonth":
// midnight on first day of this month
var startOfMonth = new Date( Today.getFullYear(), Today.getMonth(), 1, 0, 0, 0 );
// midnight on first day of next month
var startOfNextMonth = new Date( Today.getFullYear(), (Today.getMonth() + 1), 1, 0, 0, 0 );
// 23:59:59 on last day of this month
EndDate = new Date( startOfNextMonth.getTime() - 1000 );
StartDate = startOfMonth;
break;
case "future":
EndDate = null;
break;
case "current":
var SelectedDate = gCalendarWindow.getSelectedDate();
StartDate = new Date( SelectedDate.getFullYear(), SelectedDate.getMonth(), SelectedDate.getDate(), 0, 0, 0 );
EndDate = new Date( StartDate.getTime() + ( 1000 * 60 * 60 * 24 ) - 1000 );
break;
default:
dump( "there's no case for "+document.getElementById( "event-filter-menulist" ).selectedItem.value+"\n" );
EndDate = StartDate;
break;
}
gStartDate = StartDate ? jsDateToDateTime(StartDate).getInTimezone(calendarDefaultTimezone()) : null;
gEndDate = EndDate ? jsDateToDateTime(EndDate).getInTimezone(calendarDefaultTimezone()) : null;
if (StartDate && EndDate) {
filter |= ccalendar.ITEM_FILTER_CLASS_OCCURRENCES;
}
ccalendar.getItems (filter, 0, gStartDate, gEndDate, refreshListener);
}
function refreshEventTreeInternal(eventArray)
{
var searchText = document.getElementById( "unifinder-search-field" ).value;
searchText = searchText.toLowerCase();
// XXX match for strings with only whitespace. Skip those too
if (searchText.length) {
gEventArray = new Array();
var fieldsToSearch = ["DESCRIPTION", "LOCATION", "CATEGORIES", "URL"];
for (var j in eventArray) {
var event = eventArray[j];
if (event.title &&
event.title.toLowerCase().indexOf(searchText) != -1 ) {
gEventArray.push(event);
} else {
for (var k in fieldsToSearch) {
var val = event.getProperty(fieldsToSearch[k]);
if (val && val.toLowerCase().indexOf(searchText) != -1 ) {
gEventArray.push(event);
break;
}
}
}
}
} else {
gEventArray = eventArray;
}
// Extra check to see if the events are in the daterange. Some providers
// are broken when looking at all-day events.
function dateFilter(event) {
// Using .compare on the views start and end, not on the events dates,
// because .compare uses the timezone of the datetime it is called on.
// The view's timezone is what is important here.
return ((!gEndDate || gEndDate.compare(event.startDate) >= 0) &&
(!gStartDate || gStartDate.compare(event.endDate) < 0));
}
gEventArray = gEventArray.filter(dateFilter);
var ArrayOfTreeCols = document.getElementById( UnifinderTreeName ).getElementsByTagName( "treecol" );
for( var i = 0; i < ArrayOfTreeCols.length; i++ )
{
if( ArrayOfTreeCols[i].getAttribute( "sortActive" ) == "true" )
{
treeView.selectedColumn = ArrayOfTreeCols[i].getAttribute( "id" );
treeView.sortDirection = ArrayOfTreeCols[i].getAttribute("sortDirection");
treeView.sortStartedTime = new Date().getTime(); //for null/0 dates
gEventArray.sort(compareEvents);
break;
}
}
document.getElementById( UnifinderTreeName ).view = treeView;
document.getElementById( UnifinderTreeName ).eventView = new calendarEventView( gEventArray );
//select selected events in the tree.
selectSelectedEventsInTree( false );
}
function focusFirstItemIfNoSelection()
{
if( gCalendarWindow.EventSelection.selectedEvents.length == 0 )
{
//select the first event in the list.
var ListBox = document.getElementById( UnifinderTreeName );
if( ListBox.childNodes.length > 0 )
{
var SelectedEvent = ListBox.childNodes[0].event;
var ArrayOfEvents = new Array();
ArrayOfEvents[ ArrayOfEvents.length ] = SelectedEvent;
gCalendarWindow.EventSelection.setArrayToSelection( ArrayOfEvents );
/*start date is either the next or last occurence, or the start date of the event */
var eventStartDate = getCurrentNextOrPreviousRecurrence( SelectedEvent );
/* you need this in case the current day is not visible. */
gCalendarWindow.currentView.goToDay( eventStartDate, true);
}
}
}
function unifinderKeyPress(aEvent) {
const kKE = Components.interfaces.nsIDOMKeyEvent;
switch (aEvent.keyCode) {
case 13:
// Enter, edit the event
editEvent();
break;
case kKE.DOM_VK_BACK_SPACE:
case kKE.DOM_VK_DELETE:
deleteEventCommand(true);
break;
}
}