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	diff --git a/plugins/tasklist/localization/en_US.inc b/plugins/tasklist/localization/en_US.inc
	index 0b713774..f43fbb93 100644
	--- a/plugins/tasklist/localization/en_US.inc
	+++ b/plugins/tasklist/localization/en_US.inc
	@@ -1,140 +1,154 @@
	<?php

	$labels = array();
	$labels['navtitle'] = 'Tasks';
	$labels['lists'] = 'Tasklists';
	$labels['list'] = 'Tasklist';
	$labels['tags'] = 'Tags';
	$labels['tasklistsubscribe'] = 'List permanently';
	$labels['listsearchresults'] = 'Available Tasklists';
	$labels['findlists'] = 'Find tasklists...';
	$labels['searchterms'] = 'Search terms';
	$labels['notasklistsfound'] = 'No tasklists found';
	$labels['nrtasklistsfound'] = '$nr tasklists found';

	$labels['newtask'] = 'New Task';
	$labels['createtask'] = 'Create Task <Enter>';
	$labels['createnewtask'] = 'Create new Task (e.g. Saturday, Mow the lawn)';
	$labels['createfrommail'] = 'Save as task';
	$labels['mark'] = 'Mark';
	$labels['unmark'] = 'Unmark';
	$labels['edit'] = 'Edit';
	$labels['delete'] = 'Delete';
	$labels['title'] = 'Title';
	$labels['description'] = 'Description';
	$labels['datetime'] = 'Due';
	$labels['duetime'] = 'Due time';
	$labels['start'] = 'Start';
	$labels['starttime'] = 'Start time';
	$labels['alarms'] = 'Reminder';
	$labels['repeat'] = 'Repeat';
	$labels['status'] = 'Status';
	$labels['status-needs-action'] = 'Needs action';
	$labels['status-in-process'] = 'In process';
	$labels['status-completed'] = 'Completed';
	$labels['status-cancelled'] = 'Cancelled';

	$labels['all'] = 'All';
	$labels['flagged'] = 'Flagged';
	$labels['complete'] = 'Complete';
	$labels['overdue'] = 'Overdue';
	$labels['today'] = 'Today';
	$labels['tomorrow'] = 'Tomorrow';
	$labels['next7days'] = 'Next 7 days';
	$labels['later'] = 'Later';
	$labels['nodate'] = 'no date';
	$labels['removetag'] = 'Remove';

	$labels['taskdetails'] = 'Details';
	$labels['newtask'] = 'New Task';
	$labels['edittask'] = 'Edit Task';
	$labels['save'] = 'Save';
	$labels['cancel'] = 'Cancel';
	$labels['addsubtask'] = 'Add subtask';
	$labels['deletetask'] = 'Delete task';
	$labels['deletethisonly'] = 'Delete this task only';
	$labels['deletewithchilds'] = 'Delete with all subtasks';
	$labels['taskactions'] = 'Task options...';

	$labels['tabsummary'] = 'Summary';
	$labels['tabrecurrence'] = 'Recurrence';
	$labels['tabassignments'] = 'Assignments';
	$labels['tabattachments'] = 'Attachments';
	$labels['tabsharing'] = 'Sharing';

	$labels['editlist'] = 'Edit list';
	$labels['createlist'] = 'Add list';
	$labels['listactions'] = 'List options...';
	$labels['listname'] = 'Name';
	$labels['showalarms'] = 'Show reminders';
	$labels['import'] = 'Import';
	$labels['viewoptions'] = 'View options';
	$labels['focusview'] = 'View only this list';

	// date words
	$labels['on'] = 'on';
	$labels['at'] = 'at';
	$labels['this'] = 'this';
	$labels['next'] = 'next';

	-// mesages
	+// messages
	$labels['savingdata'] = 'Saving data...';
	$labels['errorsaving'] = 'Failed to save data.';
	$labels['notasksfound'] = 'No tasks found for the given criteria';
	$labels['invalidstartduedates'] = 'Start date must not be greater than due date.';
	$labels['deletetasktconfirm'] = 'Do you really want to delete this task?';
	$labels['deleteparenttasktconfirm'] = 'Do you really want to delete this task and all its subtasks?';
	$labels['deletelistconfirm'] = 'Do you really want to delete this list with all its tasks?';
	$labels['deletelistconfirmrecursive'] = 'Do you really want to delete this list with all its sub-lists and tasks?';
	$labels['aclnorights'] = 'You do not have administrator rights on this task list.';

	// (hidden) titles and labels for accessibility annotations
	$labels['quickaddinput'] = 'New task date and title';
	$labels['arialabelquickaddbox'] = 'Quick add new task';
	$labels['arialabelsearchform'] = 'Task search form';
	$labels['arialabelquicksearchbox'] = 'Task search input';
	$labels['arialabellistsearchform'] = 'Tasklists search form';
	$labels['arialabeltaskselector'] = 'List mode';
	$labels['arialabeltasklisting'] = 'Tasks listing';

	// attendees
	$labels['attendee'] = 'Participant';
	$labels['role'] = 'Role';
	$labels['availability'] = 'Avail.';
	$labels['confirmstate'] = 'Status';
	$labels['addattendee'] = 'Add participant';
	$labels['roleorganizer'] = 'Organizer';
	$labels['rolerequired'] = 'Required';
	$labels['roleoptional'] = 'Optional';
	$labels['rolechair'] = 'Chair';
	$labels['rolenonparticipant'] = 'Absent';
	$labels['sendinvitations'] = 'Send invitations';
	$labels['sendnotifications'] = 'Notify participants about modifications';
	$labels['sendcancellation'] = 'Notify participants about task cancellation';
	$labels['invitationsubject'] = 'You\'ve been invited to "$title"';
	$labels['invitationmailbody'] = "\$title\n\nWhen: \$date\n\nInvitees: \$attendees\n\nPlease find attached an iCalendar file with all the task details which you can import to your tasks application.";
	$labels['invitationattendlinks'] = "In case your email client doesn't support iTip requests you can use the following link to either accept or decline this invitation:\n\$url";
	$labels['eventupdatesubject'] = '"$title" has been updated';
	$labels['eventupdatesubjectempty'] = 'A task that concerns you has been updated';
	$labels['eventupdatemailbody'] = "\$title\n\nWhen: \$date\n\nInvitees: \$attendees\n\nPlease find attached an iCalendar file with the updated task details which you can import to your tasks application.";
	$labels['eventcancelsubject'] = '"$title" has been canceled';
	$labels['eventcancelmailbody'] = "\$title\n\nWhen: \$date\n\nInvitees: \$attendees\n\nThe task has been cancelled by \$organizer.\n\nPlease find attached an iCalendar file with the updated task details.";

	// invitation handling (overrides labels from libcalendaring)
	$labels['itipobjectnotfound'] = 'The task referred by this message was not found in your tasks list.';

	$labels['itipmailbodyaccepted'] = "\$sender has accepted the assignment to the following task:\n\n\$title\n\nWhen: \$date\n\nInvitees: \$attendees";
	$labels['itipmailbodytentative'] = "\$sender has tentatively accepted the assignment to the following task:\n\n\$title\n\nWhen: \$date\n\nInvitees: \$attendees";
	$labels['itipmailbodydeclined'] = "\$sender has declined the assignment to the following task:\n\n\$title\n\nWhen: \$date\n\nInvitees: \$attendees";
	$labels['itipmailbodycancel'] = "\$sender has rejected your assignment to the following task:\n\n\$title\n\nWhen: \$date";

	$labels['itipdeclineevent'] = 'Do you want to decline your assignment to this task?';
	$labels['declinedeleteconfirm'] = 'Do you also want to delete this declined task from your tasks list?';
	$labels['itipcomment'] = 'Invitation/notification comment';
	$labels['itipcommenttitle'] = 'This comment will be attached to the invitation/notification message sent to participants';
	$labels['itipsendsuccess'] = 'Invitation sent to participants.';
	$labels['errornotifying'] = 'Failed to send notifications to task participants';

	$labels['andnmore'] = '$nr more...';
	$labels['delegatedto'] = 'Delegated to: ';
	$labels['delegatedfrom'] = 'Delegated from: ';
	+$labels['savetotasklist'] = 'Save to tasks';
	+$labels['comment'] = 'Comment';
	+$labels['errorimportingtask'] = 'Failed to import task(s)';
	+$labels['importwarningexists'] = 'A copy of this task already exists in your tasklist.';
	+$labels['importsuccess'] = 'Successfully imported $nr tasks';
	+$labels['newerversionexists'] = 'A newer version of this task already exists! Aborted.';
	+$labels['nowritetasklistfound'] = 'No tasklist found to save the task';
	+$labels['importedsuccessfully'] = 'The task was successfully added to \'$list\'';
	+$labels['updatedsuccessfully'] = 'The task was successfully updated in \'$list\'';
	+$labels['attendeupdateesuccess'] = 'Successfully updated the participant\'s status';
	+$labels['itipresponseerror'] = 'Failed to send the response to this task invitation';
	+$labels['itipinvalidrequest'] = 'This invitation is no longer valid';
	+$labels['sentresponseto'] = 'Successfully sent invitation response to $mailto';
	+$labels['successremoval'] = 'The task has been deleted successfully.';
	diff --git a/plugins/tasklist/skins/larry/images/ical-attachment.png b/plugins/tasklist/skins/larry/images/ical-attachment.png
	new file mode 100644
	index 00000000..8fa486ae
	Binary files /dev/null and b/plugins/tasklist/skins/larry/images/ical-attachment.png differ
	diff --git a/plugins/tasklist/skins/larry/images/loading_blue.gif b/plugins/tasklist/skins/larry/images/loading_blue.gif
	new file mode 100644
	index 00000000..2ea6b19a
	Binary files /dev/null and b/plugins/tasklist/skins/larry/images/loading_blue.gif differ
	diff --git a/plugins/tasklist/skins/larry/images/tasklist.png b/plugins/tasklist/skins/larry/images/tasklist.png
	new file mode 100644
	index 00000000..50ed6300
	Binary files /dev/null and b/plugins/tasklist/skins/larry/images/tasklist.png differ
	diff --git a/plugins/tasklist/skins/larry/tasklist.css b/plugins/tasklist/skins/larry/tasklist.css
	index 7bdfe570..bcdf29aa 100644
	--- a/plugins/tasklist/skins/larry/tasklist.css
	+++ b/plugins/tasklist/skins/larry/tasklist.css
	@@ -1,1093 +1,1186 @@
	/**
	* Roundcube Taklist plugin styles for skin "Larry"
	*
	* Copyright (C) 2012, Kolab Systems AG <contact@kolabsys.com>
	* Screendesign by FLINT / Büro für Gestaltung, bueroflint.com
	*
	* The contents are subject to the Creative Commons Attribution-ShareAlike
	* License. It is allowed to copy, distribute, transmit and to adapt the work
	* by keeping credits to the original autors in the README file.
	* See http://creativecommons.org/licenses/by-sa/3.0/ for details.
	*/

	#taskbar a.button-tasklist span.button-inner {
	background-image: url(buttons.png);
	background-position: 0 0;
	}

	#taskbar a.button-tasklist:hover span.button-inner,
	#taskbar a.button-tasklist.button-selected span.button-inner {
	background-position: 0 -26px;
	}

	-ul.toolbarmenu li span.icon.taskadd {
	+ul.toolbarmenu li span.icon.taskadd,
	+#attachmentmenu li a.tasklistlink span.icon.taskadd {
	background-image: url(buttons.png);
	background-position: -4px -90px;
	}

	div.uidialog {
	display: none;
	}

	body.attachmentwin #mainscreen {
	top: 60px;
	}

	body.attachmentwin #topnav .topright {
	margin-top: 20px;
	}

	.tasklistview #mainscreen {
	min-width: 1000px !important;
	min-height: 520px !important;
	}

	.tasklistview #header {
	min-width: 1020px !important;
	}

	#sidebar {
	position: absolute;
	top: 0;
	left: 0;
	bottom: 0;
	width: 240px;
	}

	.tasklistview #searchmenulink {
	width: 15px;
	}

	#tagsbox {
	position: absolute;
	top: 42px;
	left: 0;
	width: 100%;
	height: 242px;
	}

	#tasklistsbox {
	position: absolute;
	top: 300px;
	left: 0;
	width: 100%;
	bottom: 0px;
	}

	#tasklistsbox .boxtitle a.iconbutton.search {
	position: absolute;
	top: 8px;
	right: 8px;
	width: 16px;
	cursor: pointer;
	background-position: -2px -317px;
	}

	#tasklistsbox .listsearchbox {
	display: none;
	}

	#tasklistsbox .listsearchbox.expanded {
	display: block;
	}

	#tasklistsbox .scroller {
	top: 34px;
	}

	#tasklistsbox .listsearchbox.expanded + .scroller {
	top: 68px;
	}


	#taskselector {
	margin: -1px 40px 0 0;
	padding: 0;
	}

	#taskselector li {
	display: inline-block;
	position: relative;
	font-size: 90%;
	padding-right: 0.3em;
	}

	.tagcloud li,
	#taskselector li a {
	display: inline-block;
	color: #004458;
	min-width: 3.5em;
	padding: 0.2em 0.6em 0.2em 0.6em;
	text-align: center;
	text-decoration: none;
	border: 1px solid #eee;
	border-color: transparent;
	}

	.webkit .tagcloud li,
	.webkit #taskselector li a {
	padding-bottom: 0.25em;
	}


	#taskselector li:first-child {
	border-top: 0;
	border-radius: 4px 4px 0 0;
	}

	#taskselector li:last-child {
	border-bottom: 0;
	border-radius: 0 0 4px 4px;
	}

	#taskselector li.overdue a {
	color: #b72a2a;
	font-weight: bold;
	}

	#taskselector li.inactive a {
	color: #97b3bf;
	}

	.tagcloud li.selected,
	#taskselector li.selected a {
	color: #fff;
	background: #005d76;
	background: -moz-linear-gradient(top, #005d76 0%, #004558 100%);
	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#005d76), color-stop(100%,#004558));
	background: -o-linear-gradient(top, #005d76 0%, #004558 100%);
	background: -ms-linear-gradient(top, #005d76 0%, #004558 100%);
	background: linear-gradient(top, #005d76 0%, #004558 100%);
	box-shadow: inset 0 1px 1px 0 #003645;
	-o-box-shadow: inset 0 1px 1px 0 #003645;
	-webkit-box-shadow: inset 0 1px 1px 0 #003645;
	-moz-box-shadow: inset 0 1px 1px 0 #003645;
	border-color: #003645;
	border-radius: 10px;
	text-shadow: none;
	}

	#taskselector li .count {
	display: none;
	position: absolute;
	top: -18px;
	right: 5px;
	min-width: 1.8em;
	padding: 2px 4px;
	background: #004558;
	background: -moz-linear-gradient(top, #005d76 0%, #004558 100%);
	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#005d76), color-stop(100%,#004558));
	background: -o-linear-gradient(top, #005d76 0%, #004558 100%);
	background: -ms-linear-gradient(top, #005d76 0%, #004558 100%);
	background: linear-gradient(top, #005d76 0%, #004558 100%);
	box-shadow: 0 1px 2px 0 rgba(24,24,24,0.6);
	color: #fff;
	border-radius: 3px;
	text-align: center;
	font-weight: bold;
	font-size: 80%;
	text-shadow: none;
	}

	#taskselector li .count:after {
	content: "";
	position: absolute;
	bottom: -5px;
	left: 50%;
	margin-left: -5px;
	border-style: solid;
	border-width: 5px 5px 0;
	border-color: #004558 transparent;
	/* reduce the damage in FF3.0 */
	display: block;
	width: 0;
	}

	#taskselector li.overdue .count {
	background: #ff3800;
	}

	#taskselector li.overdue .count:after {
	border-color: #ff3800 transparent;
	}

	.tagcloud {
	padding: 0;
	margin: 6px;
	list-style: none;
	}

	.tagcloud li {
	display: inline-block;
	color: #004458;
	padding-right: 0.2em;
	margin-right: 0.3em;
	margin-bottom: 0.4em;
	min-width: 1.2em;
	cursor: pointer;
	}

	.tagcloud li.inactive {
	color: #89b3be;
	padding-right: 0.6em;
	font-size: 80%;
	/* display: none; */
	}

	.tagcloud li .count {
	position: relative;
	top: -1px;
	margin-left: 5px;
	padding: 0.15em 0.5em;
	font-size: 80%;
	font-weight: bold;
	color: #59838e;
	background: #c7e3ef;
	box-shadow: inset 0 1px 1px 0 #b0ccd7;
	-o-box-shadow: inset 0 1px 1px 0 #b0ccd7;
	-webkit-box-shadow: inset 0 1px 1px 0 #b0ccd7;
	-moz-box-shadow: inset 0 1px 1px 0 #b0ccd7;
	border-color: #b0ccd7;
	border-radius: 8px;
	}

	.tag-draghelper .tag .count,
	.tagcloud li.inactive .count {
	display: none;
	}

	#tasklistsbox .treelist li {
	margin: 0;
	display: block;
	position: relative;
	}

	#tasklistsbox .treelist li div.tasklist {
	margin: 0;
	height: 20px;
	padding: 6px 8px 2px 6px;
	position: relative;
	white-space: nowrap;
	}

	#tasklistsbox .treelist li.virtual > div.tasklist {
	height: 14px;
	}

	#tasklistsbox .treelist ul li > div.tasklist {
	margin-left: 16px;
	}

	#tasklistsbox .treelist ul ul li > div.tasklist {
	margin-left: 32px;
	}

	#tasklistsbox .treelist ul ul ul li > div.tasklist {
	margin-left: 48px;
	}

	#tasklistsbox .treelist li label {
	display: block;
	}

	#tasklistsbox .treelist li span.listname {
	display: block;
	position: absolute;
	top: 7px;
	left: 38px;
	right: 40px;
	cursor: default;
	padding: 0px 30px 2px 2px;
	color: #004458;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	background: url(sprites.png) right 20px no-repeat;
	}

	#tasklistsbox .treelist li a.quickview {
	display: inline-block;
	position: absolute;
	top: 6px;
	right: 24px;
	width: 16px;
	height: 16px;
	padding: 0;
	background: url(sprites.png) -200px 0 no-repeat;
	overflow: hidden;
	text-indent: -5000px;
	cursor: pointer;
	}

	#tasklistsbox .treelist li a.subscribed {
	display: inline-block;
	position: absolute;
	top: 6px;
	right: 5px;
	height: 16px;
	width: 16px;
	padding: 0;
	background: url(sprites.png) -100px 0 no-repeat;
	overflow: hidden;
	text-indent: -5000px;
	cursor: pointer;
	}

	#tasklistsbox .treelist div > a.subscribed:focus,
	#tasklistsbox .treelist div:hover > a.subscribed {
	background-position: -2px -215px;
	}

	#tasklistsbox .treelist div.subscribed a.subscribed {
	background-position: -20px -215px;
	}

	#tasklistsbox .treelist div > a.quickview:focus,
	#tasklistsbox .treelist li div:hover > a.quickview {
	background-position: -20px -101px;
	}

	#tasklistsbox .treelist li div.focusview > a.quickview {
	background-position: -2px -101px;
	}

	#tasklistsbox .searchresults .treelist li a.quickview {
	display: none;
	}

	#tasklistsbox .treelist div a.quickview:focus,
	#tasklistsbox .treelist div a.subscribed:focus {
	border-radius: 3px;
	outline: 2px solid rgba(30,150,192, 0.5);
	}

	#tasklistsbox .treelist li.selected > div > span.listname {
	font-weight: bold;
	}

	#tasklistsbox .treelist .readonly > span.listname {
	background-position: right -142px;
	}

	#tasklistsbox .treelist .user > span.listname {
	background-position: right -160px;
	}

	#tasklistsbox .treelist .virtual > span.listname {
	color: #aaa;
	top: 4px;
	left: 20px;
	right: 5px;
	}

	#tasklistsbox .treelist.flat li span.calname {
	left: 24px;
	right: 22px;
	}

	#tasklistsbox .treelist li input {
	position: absolute;
	top: 5px;
	left: 18px;
	}

	#tasklistsbox .treelist li .treetoggle {
	top: 8px;
	}

	#tasklistsbox .treelist li.virtual > .treetoggle {
	top: 6px;
	}

	#tasklistsbox .searchresults {
	background: #b0ccd7;
	margin-top: 8px;
	}

	#tasklistsbox .searchresults .boxtitle {
	background: none;
	padding: 2px 8px 2px 8px;
	}

	#tasklistsbox .searchresults .listing li {
	background-color: #c7e3ef;
	}

	#mainview-right {
	position: absolute;
	top: 0;
	left: 256px;
	right: 0;
	bottom: 0;
	}

	#taskstoolbar {
	position: absolute;
	top: -6px;
	left: 0;
	width: 100%;
	height: 40px;
	white-space: nowrap;
	}

	#taskstoolbar a.button.newtask {
	background-image: url(buttons.png);
	background-position: center -53px;
	}

	#quickaddbox {
	position: absolute;
	top: 2px;
	left: 0;
	width: 60%;
	height: 32px;
	white-space: nowrap;
	}

	#quickaddinput {
	width: 85%;
	margin: 0;
	padding: 3px 8px;
	height: 18px;
	background: #f1f1f1;
	background: rgba(255, 255, 255, 0.7);
	border-color: #a3a3a3;
	font-weight: bold;
	}

	#quickaddbox .button {
	margin-left: 5px;
	padding: 3px 10px;
	font-weight: bold;
	}

	#tasksview {
	position: absolute;
	top: 42px;
	left: 0;
	right: 0;
	bottom: 0;
	padding-bottom: 28px;
	background: rgba(255, 255, 255, 0.2);
	overflow: visible;
	}

	#message.statusbar {
	border-top: 1px solid #c3c3c3;
	}

	#tasksview .scroller {
	position: absolute;
	left: 0;
	top: 35px;
	width: 100%;
	bottom: 0;
	overflow: auto;
	}

	#tasksview .buttonbar {
	color: #777;
	background: #eee;
	background: -moz-linear-gradient(top, #eee 0%, #dfdfdf 100%);
	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#eee), color-stop(100%,#dfdfdf));
	background: -o-linear-gradient(top, #eee 0%, #dfdfdf 100%);
	background: -ms-linear-gradient(top, #eee 0%, #dfdfdf 100%);
	background: linear-gradient(top, #eee 0%, #dfdfdf 100%);
	border-bottom: 1px solid #ccc;
	position: relative;
	line-height: 13px;
	height: 20px;
	}

	#tasksview .buttonbar .buttonbar-right {
	position: absolute;
	top: 6px;
	right: 8px;
	}

	.buttonbar-right .listmenu {
	display: inline-block;
	cursor: pointer;
	}

	.buttonbar-right .listmenu .inner {
	display: inline-block;
	height: 18px;
	width: 20px;
	padding: 0;
	background: url(sprites.png) 0 -237px no-repeat;
	text-indent: -5000px;
	}

	#thelist {
	padding: 0;
	margin: 1em;
	list-style: none;
	}

	#listmessagebox {
	display: none;
	font-size: 14px;
	color: #666;
	margin: 1.5em;
	text-shadow: 0px 1px 1px #fff;
	text-align:center;
	}

	.taskitem {
	position: relative;
	display: block;
	margin-bottom: 3px;
	}

	.taskitem.dragging {
	opacity: 0.5;
	}

	.taskitem .childtasks {
	position: relative;
	padding: 0;
	margin: 3px 0 0 20px;
	list-style: none;
	}

	.taskitem .childtoggle {
	display: none;
	position: absolute;
	top: 4px;
	left: -5px;
	padding: 2px;
	font-size: 10px;
	color: #727272;
	cursor: pointer;

	width: 14px;
	height: 14px;
	background: url(sprites.png) -2px -80px no-repeat;
	text-indent: -1000px;
	overflow: hidden;
	}

	.taskitem .childtoggle.collapsed {
	background-position: -18px -81px;
	}

	.taskhead {
	position: relative;
	margin-left: 14px;
	padding: 4px 5px 3px 5px;
	border: 1px solid #fff;
	border-radius: 5px;
	background: #fff;
	-webkit-box-shadow: 0 1px 1px 0 rgba(50, 50, 50, 0.5);
	-moz-box-shadow: 0 1px 1px 0 rgba(50, 50, 50, 0.5);
	box-shadow: 0 1px 1px 0 rgba(50, 50, 50, 0.5);
	padding-right: 26em;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	cursor: default;
	outline: none;
	}

	.taskhead:focus,
	.taskhead.droptarget {
	border-color: #4787b1;
	box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
	-moz-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
	-webkit-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
	-o-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
	}

	.taskhead .complete {
	margin: -1px 1em 0 0;
	}

	.taskhead .title {
	font-size: 12px;
	}

	.taskhead .flagged {
	display: inline-block;
	width: 16px;
	height: 16px;
	background: url(sprites.png) 1000px -3px no-repeat;
	margin: -3px 1em 0 0;
	vertical-align: middle;
	cursor: pointer;
	}

	.taskhead .flagged:focus,
	.taskhead:hover .flagged {
	background-position: -2px -3px;
	}

	.taskhead.flagged .flagged {
	background-position: -2px -23px;
	}

	.taskhead .tags {
	display: block;
	position: absolute;
	top: 3px;
	right: 10em;
	max-width: 14em;
	height: 16px;
	overflow: hidden;
	padding-top: 1px;
	text-align: right;
	}

	.tag-draghelper .tag,
	.taskhead .tags .tag {
	font-size: 85%;
	background: #d9ecf4;
	border: 1px solid #c2dae5;
	border-radius: 4px;
	padding: 1px 7px;
	margin-right: 3px;
	}

	.tag-draghelper li.tag {
	list-style: none;
	font-size: 100%;
	}

	.taskhead .date {
	position: absolute;
	top: 4px;
	right: 30px;
	text-align: right;
	cursor: pointer;
	}

	.taskhead.nodate .date {
	color: #ddd;
	}

	.taskhead.overdue .date {
	color: #d00;
	}

	.taskhead.nodate:hover .date {
	color: #999;
	}

	.taskhead .date input {
	padding: 1px 2px;
	border: 1px solid #ddd;
	-webkit-box-shadow: none;
	-moz-box-shadow: none;
	box-shadow: none;
	outline: none;
	text-align: right;
	width: 6em;
	font-size: 11px;
	}

	.taskhead .actions {
	display: block;
	position: absolute;
	top: 3px;
	right: 6px;
	width: 18px;
	height: 18px;
	background: url(sprites.png) 1000px -80px no-repeat;
	text-indent: -5000px;
	overflow: hidden;
	cursor: pointer;
	}

	.taskhead .actions:focus,
	.taskhead:hover .actions {
	background-position: 0 -80px;
	}

	.taskhead.complete {
	opacity: 0.6;
	}

	.taskhead.complete .title {
	text-decoration: line-through;
	}

	.taskhead .progressbar {
	position: absolute;
	bottom: 1px;
	left: 6px;
	right: 6px;
	height: 2px;
	}

	.taskhead.complete .progressbar {
	display: none;
	}

	.taskhead .progressvalue {
	height: 1px;
	background: rgba(1, 124, 180, 0.2);
	border-top: 1px solid #219de6;
	}

	ul.toolbarmenu li span.add,
	ul.toolbarmenu li span.expand,
	ul.toolbarmenu li span.collapse {
	background-image: url(sprites.png);
	}

	ul.toolbarmenu li span.add {
	background-position: 0 -302px;
	}

	ul.toolbarmenu li span.expand {
	background-position: 0 -258px;
	}

	ul.toolbarmenu li span.collapse {
	background-position: 0 -280px;
	}

	ul.toolbarmenu li span.delete {
	background-position: 0 -1508px;
	}

	.taskitem-draghelper {
	/*
	width: 32px;
	height: 26px;
	*/
	background: #444;
	border: 1px solid #555;
	border-radius: 4px;
	box-shadow: 0 2px 6px 0 #333;
	-moz-box-shadow: 0 2px 6px 0 #333;
	-webkit-box-shadow: 0 2px 6px 0 #333;
	-o-box-shadow: 0 2px 6px 0 #333;
	z-index: 5000;
	padding: 2px 10px;
	font-size: 20px;
	color: #ccc;
	opacity: 0.92;
	filter: alpha(opacity=90);
	text-shadow: 0px 1px 1px #333;
	}

	#rootdroppable {
	display: none;
	position: absolute;
	top: 2px;
	left: 1em;
	right: 1em;
	height: 5px;
	background: #ddd;
	border-radius: 3px;
	}

	#rootdroppable.droptarget {
	background: #4787b1;
	box-shadow: 0 0 2px 1px rgba(71,135,177, 0.9);
	-moz-box-shadow: 0 0 2px 1px rgba(71,135,177, 0.9);
	-webkit-box-shadow: 0 0 2px 1px rgba(71,135,177, 0.9);
	-o-box-shadow: 0 0 2px 1px rgba(71,135,177, 0.9);

	}

	/* task edit form */

	#taskedit,
	#taskshow {
	display:none;
	}

	#taskedit {
	position: relative;
	top: -1.5em;
	padding: 0.5em 0.1em;
	margin: 0 -0.2em;
	}

	#taskshow h2 {
	margin-top: -0.5em;
	}

	#taskshow label {
	color: #999;
	}

	#task-parent-title {
	position: relative;
	top: -0.6em;
	}

	a.morelink {
	font-size: 90%;
	color: #0069a6;
	text-decoration: none;
	outline: none;
	}

	a.morelink:hover {
	text-decoration: underline;
	}

	#taskedit .ui-tabs-panel {
	min-height: 24em;
	}

	#taskeditform input.text,
	#taskeditform textarea {
	width: 97%;
	}

	#taskeditform .formbuttons {
	margin: 0.5em 0;
	}

	#taskedit .border-after {
	padding-bottom: 0.8em;
	margin-bottom: 0.8em;
	border-bottom: 2px solid #fafafa;
	}

	.edit-attendees-table {
	width: 100%;
	margin-top: 0.5em;
	}

	.edit-attendees-table th.role,
	.edit-attendees-table td.role {
	width: 9em;
	}

	.edit-attendees-table th.availability,
	.edit-attendees-table td.availability,
	.edit-attendees-table th.confirmstate,
	.edit-attendees-table td.confirmstate {
	width: 4em;
	}

	.edit-attendees-table th.options,
	.edit-attendees-table td.options {
	width: 16px;
	padding: 2px 4px;
	}

	.edit-attendees-table th.sendmail,
	.edit-attendees-table td.sendmail {
	width: 44px;
	padding: 2px;
	}

	.edit-attendees-table th.sendmail label {
	display: inline-block;
	position: relative;
	top: 4px;
	width: 24px;
	height: 18px;
	min-width: 24px;
	padding: 0;
	overflow: hidden;
	text-indent: -5000px;
	white-space: nowrap;
	background: url(images/sendinvitation.png) 1px 0 no-repeat;
	}

	.edit-attendees-table th.name,
	.edit-attendees-table td.name {
	width: auto;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	}

	.edit-attendees-table td.name select {
	width: 100%;
	}

	.edit-attendees-table a.deletelink {
	display: inline-block;
	width: 17px;
	height: 17px;
	padding: 0;
	overflow: hidden;
	text-indent: 1000px;
	}

	#edit-attendees-form {
	position: relative;
	margin-top: 15px;
	}

	#edit-attendees-form .attendees-invitebox {
	text-align: right;
	margin: 0;
	}

	#edit-attendees-form .attendees-invitebox label {
	padding-right: 3px;
	}

	#taskedit-attachments {
	margin: 0.6em 0;
	}

	#taskedit-attachments ul li {
	display: block;
	color: #333;
	font-weight: bold;
	padding: 8px 4px 3px 30px;
	text-shadow: 0px 1px 1px #fff;
	text-decoration: none;
	white-space: nowrap;
	}

	#taskedit-attachments ul li a.file {
	padding: 0;
	}

	#taskedit-attachments-form {
	margin-top: 1em;
	padding-top: 0.8em;
	border-top: 2px solid #fafafa;
	}

	div.form-section {
	position: relative;
	margin-top: 0.2em;
	margin-bottom: 0.8em;
	}

	.form-section label {
	display: inline-block;
	min-width: 7em;
	padding-right: 0.5em;
	margin-bottom: 0.3em;
	}

	label.block {
	display: block;
	margin-bottom: 0.3em;
	}

	#taskedit-completeness-slider {
	display: inline-block;
	margin-left: 2em;
	width: 30em;
	height: 0.8em;
	border: 1px solid #ccc;
	}

	#taskedit-tagline {
	width: 97%;
	}

	#taskedit .droptarget {
	background-image: url(../../../../skins/larry/images/filedrop.png) !important;
	background-position: center bottom !important;
	background-repeat: no-repeat !important;
	}

	#taskedit .droptarget.hover,
	#taskedit .droptarget.active {
	border-color: #019bc6;
	box-shadow: 0 0 3px 2px rgba(71,135,177, 0.5);
	-moz-box-shadow: 0 0 3px 2px rgba(71,135,177, 0.5);
	-webkit-box-shadow: 0 0 3px 2px rgba(71,135,177, 0.5);
	-o-box-shadow: 0 0 3px 2px rgba(71,135,177, 0.5);
	}

	#taskedit .droptarget.hover {
	background-color: #d9ecf4;
	box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
	-moz-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
	-webkit-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
	-o-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
	}

	#task-attachments .attachmentslist li {
	float: left;
	margin-right: 1em;
	}

	#task-attachments .attachmentslist li a {
	outline: none;
	}

	.task-attendees span.attendee {
	padding-right: 18px;
	margin-right: 0.5em;
	background: url(images/attendee-status.png) right 0 no-repeat;
	}

	.task-attendees span.attendee a.mailtolink {
	text-decoration: none;
	white-space: nowrap;
	outline: none;
	}

	.task-attendees span.attendee a.mailtolink:hover {
	text-decoration: underline;
	}

	.task-attendees span.accepted {
	background-position: right -20px;
	}

	.task-attendees span.declined {
	background-position: right -40px;
	}

	.task-attendees span.tentative {
	background-position: right -60px;
	}

	.task-attendees span.delegated {
	background-position: right -180px;
	}

	.task-attendees span.organizer {
	background-position: right -80px;
	}

	#all-task-attendees span.attendee {
	display: block;
	margin-bottom: 0.4em;
	padding-bottom: 0.3em;
	border-bottom: 1px solid #ddd;
	}

	.tasklistview .uidialog .tabbed {
	min-width: 600px;
	}

	.tasklistview .uidialog .propform fieldset.ui-tabs-panel {
	min-height: 290px;
	}

	.tasklistview .uidialog .propform #taskedit-tasklistame {
	width: 20em;
	}

	.ui-dialog .task-update-confirm {
	padding: 0 0.5em 0.5em 0.5em;
	}

	.task-dialog-message,
	.task-update-confirm .message {
	margin-top: 0.5em;
	padding: 0.8em;
	border: 1px solid #ffdf0e;
	background-color: #fef893;
	}

	.task-dialog-message .message,
	.task-update-confirm .message {
	margin-bottom: 0.5em;
	}

	+/* Invitation UI in mail */
	+
	+.messagelist tbody .attachment span.ical {
	+ display: inline-block;
	+ vertical-align: middle;
	+ height: 18px;
	+ width: 20px;
	+ padding: 0;
	+ background: url(images/ical-attachment.png) 2px 1px no-repeat;
	+}
	+
	+div.tasklist-invitebox {
	+ min-height: 20px;
	+ margin: 5px 8px;
	+ padding: 3px 6px 6px 34px;
	+ border: 1px solid #ffdf0e;
	+ background: url(images/tasklist.png) 6px 5px no-repeat #fef893;
	+}
	+
	+div.tasklist-invitebox td.ititle {
	+ font-weight: bold;
	+ padding-right: 0.5em;
	+}
	+
	+div.tasklist-invitebox td.label {
	+ color: #666;
	+ padding-right: 1em;
	+}
	+
	+#event-rsvp .rsvp-buttons,
	+div.tasklist-invitebox .itip-buttons div {
	+ margin-top: 0.5em;
	+}
	+
	+#event-rsvp input.button,
	+div.tasklist-invitebox input.button {
	+ font-weight: bold;
	+ margin-right: 0.5em;
	+}
	+
	+div.tasklist-invitebox .folder-select {
	+ font-weight: 10px;
	+ margin-left: 1em;
	+}
	+
	+div.tasklist-invitebox .rsvp-status {
	+ padding-left: 2px;
	+}
	+
	+div.tasklist-invitebox .rsvp-status.loading {
	+ color: #666;
	+ padding: 1px 0 2px 24px;
	+ background: url(images/loading_blue.gif) top left no-repeat;
	+}
	+
	+div.tasklist-invitebox .rsvp-status.hint {
	+ color: #666;
	+ text-shadow: none;
	+ font-style: italic;
	+}
	+
	+#event-partstat .changersvp,
	+div.tasklist-invitebox .rsvp-status.declined,
	+div.tasklist-invitebox .rsvp-status.tentative,
	+div.tasklist-invitebox .rsvp-status.accepted,
	+div.tasklist-invitebox .rsvp-status.delegated,
	+div.tasklist-invitebox .rsvp-status.needs-action {
	+ padding: 0 0 1px 22px;
	+ background: url(images/attendee-status.png) 2px -20px no-repeat;
	+}
	+
	+#event-partstat .changersvp.declined,
	+div.tasklist-invitebox .rsvp-status.declined {
	+ background-position: 2px -40px;
	+}
	+
	+#event-partstat .changersvp.tentative,
	+div.tasklist-invitebox .rsvp-status.tentative {
	+ background-position: 2px -60px;
	+}
	+
	+#event-partstat .changersvp.delegated,
	+div.tasklist-invitebox .rsvp-status.delegated {
	+ background-position: 2px -180px;
	+}
	+
	+#event-partstat .changersvp.needs-action,
	+div.tasklist-invitebox .rsvp-status.needs-action {
	+ background-position: 2px 0;
	+}
	+
	+
	/ Special hacks for IE7 /
	/ They need to be in this file to also affect the task-create dialog embedded in mail view /

	html.ie7 #taskedit-completeness-slider {
	display: inline;
	}
	diff --git a/plugins/tasklist/tasklist.php b/plugins/tasklist/tasklist.php
	index 34b1ffb9..76ef2514 100644
	--- a/plugins/tasklist/tasklist.php
	+++ b/plugins/tasklist/tasklist.php
	@@ -1,1278 +1,1808 @@
	<?php

	/**
	* Tasks plugin for Roundcube webmail
	*
	* @version @package_version@
	* @author Thomas Bruederli <bruederli@kolabsys.com>
	*
	* Copyright (C) 2012, Kolab Systems AG <contact@kolabsys.com>
	*
	* This program is free software: you can redistribute it and/or modify
	* it under the terms of the GNU Affero General Public License as
	* published by the Free Software Foundation, either version 3 of the
	* License, or (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU Affero General Public License for more details.
	*
	* You should have received a copy of the GNU Affero General Public License
	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	*/

	class tasklist extends rcube_plugin
	{
	const FILTER_MASK_TODAY = 1;
	const FILTER_MASK_TOMORROW = 2;
	const FILTER_MASK_WEEK = 4;
	const FILTER_MASK_LATER = 8;
	const FILTER_MASK_NODATE = 16;
	const FILTER_MASK_OVERDUE = 32;
	const FILTER_MASK_FLAGGED = 64;
	const FILTER_MASK_COMPLETE = 128;

	const SESSION_KEY = 'tasklist_temp';

	public static $filter_masks = array(
	'today' => self::FILTER_MASK_TODAY,
	'tomorrow' => self::FILTER_MASK_TOMORROW,
	'week' => self::FILTER_MASK_WEEK,
	'later' => self::FILTER_MASK_LATER,
	'nodate' => self::FILTER_MASK_NODATE,
	'overdue' => self::FILTER_MASK_OVERDUE,
	'flagged' => self::FILTER_MASK_FLAGGED,
	'complete' => self::FILTER_MASK_COMPLETE,
	);

	public $task = '?(?!login\|logout).*';
	public $rc;
	public $lib;
	public $driver;
	public $timezone;
	public $ui;
	public $home; // declare public to be used in other classes

	private $collapsed_tasks = array();
	private $itip;
	+ private $ical;


	/**
	* Plugin initialization.
	*/
	function init()
	{
	$this->require_plugin('libcalendaring');

	$this->rc = rcube::get_instance();
	$this->lib = libcalendaring::get_instance();

	$this->register_task('tasks', 'tasklist');

	// load plugin configuration
	$this->load_config();

	$this->timezone = $this->lib->timezone;

	// proceed initialization in startup hook
	$this->add_hook('startup', array($this, 'startup'));

	$this->add_hook('user_delete', array($this, 'user_delete'));
	}

	/**
	* Startup hook
	*/
	public function startup($args)
	{
	// the tasks module can be enabled/disabled by the kolab_auth plugin
	if ($this->rc->config->get('tasklist_disabled', false) \|\| !$this->rc->config->get('tasklist_enabled', true))
	return;

	// load localizations
	$this->add_texts('localization/', $args['task'] == 'tasks' && (!$args['action'] \|\| $args['action'] == 'print'));
	$this->rc->load_language($_SESSION['language'], array('tasks.tasks' => $this->gettext('navtitle'))); // add label for task title

	if ($args['task'] == 'tasks' && $args['action'] != 'save-pref') {
	$this->load_driver();

	// register calendar actions
	$this->register_action('index', array($this, 'tasklist_view'));
	$this->register_action('task', array($this, 'task_action'));
	$this->register_action('tasklist', array($this, 'tasklist_action'));
	$this->register_action('counts', array($this, 'fetch_counts'));
	$this->register_action('fetch', array($this, 'fetch_tasks'));
	$this->register_action('inlineui', array($this, 'get_inline_ui'));
	$this->register_action('mail2task', array($this, 'mail_message2task'));
	$this->register_action('get-attachment', array($this, 'attachment_get'));
	$this->register_action('upload', array($this, 'attachment_upload'));
	+ $this->register_action('mailimportitip', array($this, 'mail_import_itip'));
	+ $this->register_action('mailimportattach', array($this, 'mail_import_attachment'));
	+ $this->register_action('itip-status', array($this, 'task_itip_status'));
	+ $this->register_action('itip-remove', array($this, 'task_itip_remove'));
	+ $this->register_action('itip-decline-reply', array($this, 'mail_itip_decline_reply'));
	$this->add_hook('refresh', array($this, 'refresh'));

	$this->collapsed_tasks = array_filter(explode(',', $this->rc->config->get('tasklist_collapsed_tasks', '')));
	}
	else if ($args['task'] == 'mail') {
	- // TODO: register hooks to catch ical/vtodo email attachments
	if ($args['action'] == 'show' \|\| $args['action'] == 'preview') {
	- // $this->add_hook('message_load', array($this, 'mail_message_load'));
	- // $this->add_hook('template_object_messagebody', array($this, 'mail_messagebody_html'));
	+ $this->add_hook('message_load', array($this, 'mail_message_load'));
	+ $this->add_hook('template_object_messagebody', array($this, 'mail_messagebody_html'));
	}

	// add 'Create event' item to message menu
	if ($this->api->output->type == 'html') {
	$this->api->add_content(html::tag('li', null,
	$this->api->output->button(array(
	'command' => 'tasklist-create-from-mail',
	'label' => 'tasklist.createfrommail',
	'type' => 'link',
	'classact' => 'icon taskaddlink active',
	'class' => 'icon taskaddlink',
	'innerclass' => 'icon taskadd',
	))),
	'messagemenu');

	$this->api->output->add_label('tasklist.createfrommail');
	}
	}

	if (!$this->rc->output->ajax_call && !$this->rc->output->env['framed']) {
	$this->load_ui();
	$this->ui->init();
	}

	// add hooks for alarms handling
	$this->add_hook('pending_alarms', array($this, 'pending_alarms'));
	$this->add_hook('dismiss_alarms', array($this, 'dismiss_alarms'));
	}

	/**
	*
	*/
	private function load_ui()
	{
	if (!$this->ui) {
	require_once($this->home . '/tasklist_ui.php');
	$this->ui = new tasklist_ui($this);
	}
	}

	/**
	* Helper method to load the backend driver according to local config
	*/
	private function load_driver()
	{
	if (is_object($this->driver))
	return;

	$driver_name = $this->rc->config->get('tasklist_driver', 'database');
	$driver_class = 'tasklist_' . $driver_name . '_driver';

	require_once($this->home . '/drivers/tasklist_driver.php');
	require_once($this->home . '/drivers/' . $driver_name . '/' . $driver_class . '.php');

	switch ($driver_name) {
	case "kolab":
	$this->require_plugin('libkolab');
	default:
	$this->driver = new $driver_class($this);
	break;
	}

	$this->rc->output->set_env('tasklist_driver', $driver_name);
	}


	/**
	* Dispatcher for task-related actions initiated by the client
	*/
	public function task_action()
	{
	$filter = intval(get_input_value('filter', RCUBE_INPUT_GPC));
	$action = get_input_value('action', RCUBE_INPUT_GPC);
	$rec = get_input_value('t', RCUBE_INPUT_POST, true);
	$oldrec = $rec;
	$success = $refresh = false;

	switch ($action) {
	case 'new':
	$oldrec = null;
	$rec = $this->prepare_task($rec);
	$rec['uid'] = $this->generate_uid();
	$temp_id = $rec['tempid'];
	if ($success = $this->driver->create_task($rec)) {
	$refresh = $this->driver->get_task($rec);
	if ($temp_id) $refresh['tempid'] = $temp_id;
	$this->cleanup_task($rec);
	}
	break;

	case 'edit':
	$rec = $this->prepare_task($rec);
	$clone = $this->handle_recurrence($rec, $this->driver->get_task($rec));
	if ($success = $this->driver->edit_task($rec)) {
	$refresh[] = $this->driver->get_task($rec);
	$this->cleanup_task($rec);

	// add clone from recurring task
	if ($clone && $this->driver->create_task($clone)) {
	$refresh[] = $this->driver->get_task($clone);
	$this->driver->clear_alarms($rec['id']);
	}

	// move all childs if list assignment was changed
	if (!empty($rec['_fromlist']) && !empty($rec['list']) && $rec['_fromlist'] != $rec['list']) {
	foreach ($this->driver->get_childs(array('id' => $rec['id'], 'list' => $rec['_fromlist']), true) as $cid) {
	$child = array('id' => $cid, 'list' => $rec['list'], '_fromlist' => $rec['_fromlist']);
	if ($this->driver->move_task($child)) {
	$r = $this->driver->get_task($child);
	if ((bool)($filter & self::FILTER_MASK_COMPLETE) == $this->driver->is_complete($r)) {
	$refresh[] = $r;
	}
	}
	}
	}
	}
	break;

	case 'move':
	foreach ((array)$rec['id'] as $id) {
	$r = $rec;
	$r['id'] = $id;
	if ($this->driver->move_task($r)) {
	$refresh[] = $this->driver->get_task($r);
	$success = true;

	// move all childs, too
	foreach ($this->driver->get_childs(array('id' => $rec['id'], 'list' => $rec['_fromlist']), true) as $cid) {
	$child = $rec;
	$child['id'] = $cid;
	if ($this->driver->move_task($child)) {
	$r = $this->driver->get_task($child);
	if ((bool)($filter & self::FILTER_MASK_COMPLETE) == $this->driver->is_complete($r)) {
	$refresh[] = $r;
	}
	}
	}
	}
	}
	break;

	case 'delete':
	$mode = intval(get_input_value('mode', RCUBE_INPUT_POST));
	$oldrec = $this->driver->get_task($rec);
	if ($success = $this->driver->delete_task($rec, false)) {
	// delete/modify all childs
	foreach ($this->driver->get_childs($rec, $mode) as $cid) {
	$child = array('id' => $cid, 'list' => $rec['list']);

	if ($mode == 1) { // delete all childs
	if ($this->driver->delete_task($child, false)) {
	if ($this->driver->undelete)
	$_SESSION['tasklist_undelete'][$rec['id']][] = $cid;
	}
	else
	$success = false;
	}
	else {
	$child['parent_id'] = strval($oldrec['parent_id']);
	$this->driver->edit_task($child);
	}
	}
	// update parent task to adjust list of children
	if (!empty($oldrec['parent_id'])) {
	$refresh[] = $this->driver->get_task(array('id' => $oldrec['parent_id'], 'list' => $rec['list']));
	}
	}

	if (!$success)
	$this->rc->output->command('plugin.reload_data');
	break;

	case 'undelete':
	if ($success = $this->driver->undelete_task($rec)) {
	$refresh[] = $this->driver->get_task($rec);
	foreach ((array)$_SESSION['tasklist_undelete'][$rec['id']] as $cid) {
	if ($this->driver->undelete_task($rec)) {
	$refresh[] = $this->driver->get_task($rec);
	}
	}
	}
	break;

	case 'collapse':
	foreach (explode(',', $rec['id']) as $rec_id) {
	if (intval(get_input_value('collapsed', RCUBE_INPUT_GPC))) {
	$this->collapsed_tasks[] = $rec_id;
	}
	else {
	$i = array_search($rec_id, $this->collapsed_tasks);
	if ($i !== false)
	unset($this->collapsed_tasks[$i]);
	}
	}

	$this->rc->user->save_prefs(array('tasklist_collapsed_tasks' => join(',', array_unique($this->collapsed_tasks))));
	return; // avoid further actions
	}

	if ($success) {
	$this->rc->output->show_message('successfullysaved', 'confirmation');
	$this->update_counts($oldrec, $refresh);
	}
	else {
	$this->rc->output->show_message('tasklist.errorsaving', 'error');
	}

	// send out notifications
	if ($success && $rec['_notify'] && ($rec['attendees'] \|\| $oldrec['attendees'])) {
	// make sure we have the complete record
	$task = $action == 'delete' ? $oldrec : $this->driver->get_task($rec);

	// only notify if data really changed (TODO: do diff check on client already)
	if (!$oldrec \|\| $action == 'delete' \|\| self::task_diff($event, $old)) {
	$sent = $this->notify_attendees($task, $oldrec, $action, $rec['_comment']);
	if ($sent > 0)
	$this->rc->output->show_message('tasklist.itipsendsuccess', 'confirmation');
	else if ($sent < 0)
	$this->rc->output->show_message('tasklist.errornotifying', 'error');
	}
	}

	// unlock client
	$this->rc->output->command('plugin.unlock_saving');

	if ($refresh) {
	if ($refresh['id']) {
	$this->encode_task($refresh);
	}
	else if (is_array($refresh)) {
	foreach ($refresh as $i => $r)
	$this->encode_task($refresh[$i]);
	}
	$this->rc->output->command('plugin.update_task', $refresh);
	}
	}

	/**
	* Load iTIP functions
	*/
	private function load_itip()
	{
	if (!$this->itip) {
	require_once realpath(__DIR__ . '/../libcalendaring/lib/libcalendaring_itip.php');
	$this->itip = new libcalendaring_itip($this, 'tasklist');

	// if ($this->rc->config->get('kolab_invitation_tasklists')) {
	// $this->itip->set_rsvp_actions(array('accepted','tentative','declined','needs-action'));
	// }
	}

	return $this->itip;
	}

	/**
	* repares new/edited task properties before save
	*/
	private function prepare_task($rec)
	{
	// try to be smart and extract date from raw input
	if ($rec['raw']) {
	foreach (array('today','tomorrow','sunday','monday','tuesday','wednesday','thursday','friday','saturday','sun','mon','tue','wed','thu','fri','sat') as $word) {
	$locwords[] = '/^' . preg_quote(mb_strtolower($this->gettext($word))) . '\b/i';
	$normwords[] = $word;
	$datewords[] = $word;
	}
	foreach (array('jan','feb','mar','apr','may','jun','jul','aug','sep','oct','now','dec') as $month) {
	$locwords[] = '/(' . preg_quote(mb_strtolower($this->gettext('long'.$month))) . '\|' . preg_quote(mb_strtolower($this->gettext($month))) . ')\b/i';
	$normwords[] = $month;
	$datewords[] = $month;
	}
	foreach (array('on','this','next','at') as $word) {
	$fillwords[] = preg_quote(mb_strtolower($this->gettext($word)));
	$fillwords[] = $word;
	}

	$raw = trim($rec['raw']);
	$date_str = '';

	// translate localized keywords
	$raw = preg_replace('/^(' . join('\|', $fillwords) . ')\s*/i', '', $raw);
	$raw = preg_replace($locwords, $normwords, $raw);

	// find date pattern
	$date_pattern = '!^(\d+[./-]\s*)?((?:\d+[./-])\|' . join('\|', $datewords) . ')\.?(\s+\d{4})?[:;,]?\s+!i';
	if (preg_match($date_pattern, $raw, $m)) {
	$date_str .= $m[1] . $m[2] . $m[3];
	$raw = preg_replace(array($date_pattern, '/^(' . join('\|', $fillwords) . ')\s*/i'), '', $raw);
	// add year to date string
	if ($m[1] && !$m[3])
	$date_str .= date('Y');
	}

	// find time pattern
	$time_pattern = '/^(\d+([:.]\d+)?(\s*[hapm.]+)?),?\s+/i';
	if (preg_match($time_pattern, $raw, $m)) {
	$has_time = true;
	$date_str .= ($date_str ? ' ' : 'today ') . $m[1];
	$raw = preg_replace($time_pattern, '', $raw);
	}

	// yes, raw input matched a (valid) date
	if (strlen($date_str) && strtotime($date_str) && ($date = new DateTime($date_str, $this->timezone))) {
	$rec['date'] = $date->format('Y-m-d');
	if ($has_time)
	$rec['time'] = $date->format('H:i');
	$rec['title'] = $raw;
	}
	else
	$rec['title'] = $rec['raw'];
	}

	// normalize input from client
	if (isset($rec['complete'])) {
	$rec['complete'] = floatval($rec['complete']);
	if ($rec['complete'] > 1)
	$rec['complete'] /= 100;
	}
	if (isset($rec['flagged']))
	$rec['flagged'] = intval($rec['flagged']);

	// fix for garbage input
	if ($rec['description'] == 'null')
	$rec['description'] = '';

	foreach ($rec as $key => $val) {
	if ($val === 'null')
	$rec[$key] = null;
	}

	if (!empty($rec['date'])) {
	$this->normalize_dates($rec, 'date', 'time');
	}

	if (!empty($rec['startdate'])) {
	$this->normalize_dates($rec, 'startdate', 'starttime');
	}

	// convert tags to array, filter out empty entries
	if (isset($rec['tags']) && !is_array($rec['tags'])) {
	$rec['tags'] = array_filter((array)$rec['tags']);
	}

	// convert the submitted alarm values
	if ($rec['valarms']) {
	$valarms = array();
	foreach (libcalendaring::from_client_alarms($rec['valarms']) as $alarm) {
	// alarms can only work with a date (either task start, due or absolute alarm date)
	if (is_a($alarm['trigger'], 'DateTime') \|\| $rec['date'] \|\| $rec['startdate'])
	$valarms[] = $alarm;
	}
	$rec['valarms'] = $valarms;
	}

	// convert the submitted recurrence settings
	if (is_array($rec['recurrence'])) {
	$refdate = null;
	if (!empty($rec['date'])) {
	$refdate = new DateTime($rec['date'] . ' ' . $rec['time'], $this->timezone);
	}
	else if (!empty($rec['startdate'])) {
	$refdate = new DateTime($rec['startdate'] . ' ' . $rec['starttime'], $this->timezone);
	}

	if ($refdate) {
	$rec['recurrence'] = $this->lib->from_client_recurrence($rec['recurrence'], $refdate);

	// translate count into an absolute end date.
	// why? because when shifting completed tasks to the next recurrence,
	// the initial start date to count from gets lost.
	if ($rec['recurrence']['COUNT']) {
	$engine = libcalendaring::get_recurrence();
	$engine->init($rec['recurrence'], $refdate);
	if ($until = $engine->end()) {
	$rec['recurrence']['UNTIL'] = $until;
	unset($rec['recurrence']['COUNT']);
	}
	}
	}
	else { // recurrence requires a reference date
	$rec['recurrence'] = '';
	}
	}

	$attachments = array();
	$taskid = $rec['id'];
	if (is_array($_SESSION[self::SESSION_KEY]) && $_SESSION[self::SESSION_KEY]['id'] == $taskid) {
	if (!empty($_SESSION[self::SESSION_KEY]['attachments'])) {
	foreach ($_SESSION[self::SESSION_KEY]['attachments'] as $id => $attachment) {
	if (is_array($rec['attachments']) && in_array($id, $rec['attachments'])) {
	$attachments[$id] = $this->rc->plugins->exec_hook('attachment_get', $attachment);
	unset($attachments[$id]['abort'], $attachments[$id]['group']);
	}
	}
	}
	}

	$rec['attachments'] = $attachments;

	if (is_numeric($rec['id']) && $rec['id'] < 0)
	unset($rec['id']);

	return $rec;
	}

	/**
	* Utility method to convert a tasks date/time values into a normalized format
	*/
	private function normalize_dates(&$rec, $date_key, $time_key)
	{
	try {
	// parse date from user format (#2801)
	$date_format = $this->rc->config->get(empty($rec[$time_key]) ? 'date_format' : 'date_long', 'Y-m-d');
	$date = DateTime::createFromFormat($date_format, trim($rec[$date_key] . ' ' . $rec[$time_key]), $this->timezone);

	// fall back to default strtotime logic
	if (empty($date)) {
	$date = new DateTime($rec[$date_key] . ' ' . $rec[$time_key], $this->timezone);
	}

	$rec[$date_key] = $date->format('Y-m-d');
	if (!empty($rec[$time_key]))
	$rec[$time_key] = $date->format('H:i');

	return true;
	}
	catch (Exception $e) {
	$rec[$date_key] = $rec[$time_key] = null;
	}

	return false;
	}

	/**
	* Releases some resources after successful save
	*/
	private function cleanup_task(&$rec)
	{
	// remove temp. attachment files
	if (!empty($_SESSION[self::SESSION_KEY]) && ($taskid = $_SESSION[self::SESSION_KEY]['id'])) {
	$this->rc->plugins->exec_hook('attachments_cleanup', array('group' => $taskid));
	$this->rc->session->remove(self::SESSION_KEY);
	}
	}

	/**
	* When flagging a recurring task as complete,
	* clone it and shift dates to the next occurrence
	*/
	private function handle_recurrence(&$rec, $old)
	{
	$clone = null;
	if ($this->driver->is_complete($rec) && $old && !$this->driver->is_complete($old) && is_array($rec['recurrence'])) {
	$engine = libcalendaring::get_recurrence();
	$rrule = $rec['recurrence'];
	$updates = array();

	// compute the next occurrence of date attributes
	foreach (array('date'=>'time', 'startdate'=>'starttime') as $date_key => $time_key) {
	if (empty($rec[$date_key]))
	continue;

	$date = new DateTime($rec[$date_key] . ' ' . $rec[$time_key], $this->timezone);
	$engine->init($rrule, $date);
	if ($next = $engine->next()) {
	$updates[$date_key] = $next->format('Y-m-d');
	if (!empty($rec[$time_key]))
	$updates[$time_key] = $next->format('H:i');
	}
	}

	// shift absolute alarm dates
	if (!empty($updates) && is_array($rec['valarms'])) {
	$updates['valarms'] = array();
	unset($rrule['UNTIL'], $rrule['COUNT']); // make recurrence rule unlimited

	foreach ($rec['valarms'] as $i => $alarm) {
	if ($alarm['trigger'] instanceof DateTime) {
	$engine->init($rrule, $alarm['trigger']);
	if ($next = $engine->next()) {
	$alarm['trigger'] = $next;
	}
	}
	$updates['valarms'][$i] = $alarm;
	}
	}

	if (!empty($updates)) {
	// clone task to save a completed copy
	$clone = $rec;
	$clone['uid'] = $this->generate_uid();
	$clone['parent_id'] = $rec['id'];
	unset($clone['id'], $clone['recurrence'], $clone['attachments']);

	// update the task but unset completed flag
	$rec = array_merge($rec, $updates);
	$rec['complete'] = $old['complete'];
	$rec['status'] = $old['status'];
	}
	}

	return $clone;
	}

	/**
	* Send out an invitation/notification to all task attendees
	*/
	private function notify_attendees($task, $old, $action = 'edit', $comment = null)
	{
	if ($action == 'delete' \|\| ($task['status'] == 'CANCELLED' && $old['status'] != $task['status'])) {
	$task['cancelled'] = true;
	$is_cancelled = true;
	}

	$itip = $this->load_itip();
	$emails = $this->lib->get_user_emails();

	// add comment to the iTip attachment
	$task['comment'] = $comment;

	// needed to generate VTODO instead of VEVENT entry
	$task['_type'] = 'task';

	// compose multipart message using PEAR:Mail_Mime
	$method = $action == 'delete' ? 'CANCEL' : 'REQUEST';
	$message = $itip->compose_itip_message($task, $method);

	// list existing attendees from the $old task
	$old_attendees = array();
	foreach ((array)$old['attendees'] as $attendee) {
	$old_attendees[] = $attendee['email'];
	}

	// send to every attendee
	$sent = 0; $current = array();
	foreach ((array)$task['attendees'] as $attendee) {
	$current[] = strtolower($attendee['email']);

	// skip myself for obvious reasons
	if (!$attendee['email'] \|\| in_array(strtolower($attendee['email']), $emails)) {
	continue;
	}

	// skip if notification is disabled for this attendee
	if ($attendee['noreply']) {
	continue;
	}

	// which template to use for mail text
	$is_new = !in_array($attendee['email'], $old_attendees);
	$bodytext = $is_cancelled ? 'eventcancelmailbody' : ($is_new ? 'invitationmailbody' : 'eventupdatemailbody');
	$subject = $is_cancelled ? 'eventcancelsubject' : ($is_new ? 'invitationsubject' : ($task['title'] ? 'eventupdatesubject' : 'eventupdatesubjectempty'));

	// finally send the message
	if ($itip->send_itip_message($task, $method, $attendee, $subject, $bodytext, $message))
	$sent++;
	else
	$sent = -100;
	}

	// send CANCEL message to removed attendees
	foreach ((array)$old['attendees'] as $attendee) {
	if ($attendee['ROLE'] == 'ORGANIZER' \|\| !$attendee['email'] \|\| in_array(strtolower($attendee['email']), $current)) {
	continue;
	}

	$vevent = $old;
	$vevent['cancelled'] = $is_cancelled;
	$vevent['attendees'] = array($attendee);
	$vevent['comment'] = $comment;

	if ($itip->send_itip_message($vevent, 'CANCEL', $attendee, 'eventcancelsubject', 'eventcancelmailbody'))
	$sent++;
	else
	$sent = -100;
	}

	return $sent;
	}

	/**
	* Compare two task objects and return differing properties
	*
	* @param array Event A
	* @param array Event B
	* @return array List of differing task properties
	*/
	public static function task_diff($a, $b)
	{
	$diff = array();
	$ignore = array('changed' => 1, 'attachments' => 1);

	foreach (array_unique(array_merge(array_keys($a), array_keys($b))) as $key) {
	if (!$ignore[$key] && $a[$key] != $b[$key])
	$diff[] = $key;
	}

	// only compare number of attachments
	if (count($a['attachments']) != count($b['attachments']))
	$diff[] = 'attachments';

	return $diff;
	}

	/**
	* Dispatcher for tasklist actions initiated by the client
	*/
	public function tasklist_action()
	{
	$action = get_input_value('action', RCUBE_INPUT_GPC);
	$list = get_input_value('l', RCUBE_INPUT_GPC, true);
	$success = false;

	if (isset($list['showalarms']))
	$list['showalarms'] = intval($list['showalarms']);

	switch ($action) {
	case 'form-new':
	case 'form-edit':
	echo $this->ui->tasklist_editform($action, $list);
	exit;

	case 'new':
	$list += array('showalarms' => true, 'active' => true, 'editable' => true);
	if ($insert_id = $this->driver->create_list($list)) {
	$list['id'] = $insert_id;
	if (!$list['_reload']) {
	$this->load_ui();
	$list['html'] = $this->ui->tasklist_list_item($insert_id, $list, $jsenv);
	$list += (array)$jsenv[$insert_id];
	}
	$this->rc->output->command('plugin.insert_tasklist', $list);
	$success = true;
	}
	break;

	case 'edit':
	if ($newid = $this->driver->edit_list($list)) {
	$list['oldid'] = $list['id'];
	$list['id'] = $newid;
	$this->rc->output->command('plugin.update_tasklist', $list);
	$success = true;
	}
	break;

	case 'subscribe':
	$success = $this->driver->subscribe_list($list);
	break;

	case 'remove':
	if (($success = $this->driver->remove_list($list)))
	$this->rc->output->command('plugin.destroy_tasklist', $list);
	break;

	case 'search':
	$this->load_ui();
	$results = array();
	foreach ((array)$this->driver->search_lists(get_input_value('q', RCUBE_INPUT_GPC), get_input_value('source', RCUBE_INPUT_GPC)) as $id => $prop) {
	$editname = $prop['editname'];
	unset($prop['editname']); // force full name to be displayed
	$prop['active'] = false;

	// let the UI generate HTML and CSS representation for this calendar
	$html = $this->ui->tasklist_list_item($id, $prop, $jsenv);
	$prop += (array)$jsenv[$id];
	$prop['editname'] = $editname;
	$prop['html'] = $html;

	$results[] = $prop;
	}
	// report more results available
	if ($this->driver->search_more_results) {
	$this->rc->output->show_message('autocompletemore', 'info');
	}

	$this->rc->output->command('multi_thread_http_response', $results, get_input_value('_reqid', RCUBE_INPUT_GPC));
	return;
	}

	if ($success)
	$this->rc->output->show_message('successfullysaved', 'confirmation');
	else
	$this->rc->output->show_message('tasklist.errorsaving', 'error');

	$this->rc->output->command('plugin.unlock_saving');
	}

	/**
	* Get counts for active tasks divided into different selectors
	*/
	public function fetch_counts()
	{
	if (isset($_REQUEST['lists'])) {
	$lists = get_input_value('lists', RCUBE_INPUT_GPC);
	}
	else {
	foreach ($this->driver->get_lists() as $list) {
	if ($list['active'])
	$lists[] = $list['id'];
	}
	}
	$counts = $this->driver->count_tasks($lists);
	$this->rc->output->command('plugin.update_counts', $counts);
	}

	/**
	* Adjust the cached counts after changing a task
	*/
	public function update_counts($oldrec, $newrec)
	{
	// rebuild counts until this function is finally implemented
	$this->fetch_counts();

	// $this->rc->output->command('plugin.update_counts', $counts);
	}

	/**
	*
	*/
	public function fetch_tasks()
	{
	$f = intval(get_input_value('filter', RCUBE_INPUT_GPC));
	$search = get_input_value('q', RCUBE_INPUT_GPC);
	$filter = array('mask' => $f, 'search' => $search);
	$lists = get_input_value('lists', RCUBE_INPUT_GPC);;
	/*
	// convert magic date filters into a real date range
	switch ($f) {
	case self::FILTER_MASK_TODAY:
	$today = new DateTime('now', $this->timezone);
	$filter['from'] = $filter['to'] = $today->format('Y-m-d');
	break;

	case self::FILTER_MASK_TOMORROW:
	$tomorrow = new DateTime('now + 1 day', $this->timezone);
	$filter['from'] = $filter['to'] = $tomorrow->format('Y-m-d');
	break;

	case self::FILTER_MASK_OVERDUE:
	$yesterday = new DateTime('yesterday', $this->timezone);
	$filter['to'] = $yesterday->format('Y-m-d');
	break;

	case self::FILTER_MASK_WEEK:
	$today = new DateTime('now', $this->timezone);
	$filter['from'] = $today->format('Y-m-d');
	$weekend = new DateTime('now + 7 days', $this->timezone);
	$filter['to'] = $weekend->format('Y-m-d');
	break;

	case self::FILTER_MASK_LATER:
	$date = new DateTime('now + 8 days', $this->timezone);
	$filter['from'] = $date->format('Y-m-d');
	break;

	}
	*/
	$data = $this->tasks_data($this->driver->list_tasks($filter, $lists), $f, $tags);
	$this->rc->output->command('plugin.data_ready', array('filter' => $f, 'lists' => $lists, 'search' => $search, 'data' => $data, 'tags' => array_values(array_unique($tags))));
	}

	/**
	* Prepare and sort the given task records to be sent to the client
	*/
	private function tasks_data($records, $f, &$tags)
	{
	$data = $tags = $this->task_tree = $this->task_titles = array();
	foreach ($records as $rec) {
	if ($rec['parent_id']) {
	$this->task_tree[$rec['id']] = $rec['parent_id'];
	}
	$this->encode_task($rec);
	if (!empty($rec['tags']))
	$tags = array_merge($tags, (array)$rec['tags']);

	// apply filter; don't trust the driver on this :-)
	if ((!$f && !$this->driver->is_complete($rec)) \|\| ($rec['mask'] & $f))
	$data[] = $rec;
	}

	// sort tasks according to their hierarchy level and due date
	array_walk($data, array($this, 'task_walk_tree'));
	usort($data, array($this, 'task_sort_cmp'));

	return $data;
	}

	/**
	* Prepare the given task record before sending it to the client
	*/
	private function encode_task(&$rec)
	{
	$rec['mask'] = $this->filter_mask($rec);
	$rec['flagged'] = intval($rec['flagged']);
	$rec['complete'] = floatval($rec['complete']);
	$rec['changed'] = is_object($rec['changed']) ? $rec['changed']->format('U') : null;

	if ($rec['date']) {
	try {
	$date = new DateTime($rec['date'] . ' ' . $rec['time'], $this->timezone);
	$rec['datetime'] = intval($date->format('U'));
	$rec['date'] = $date->format($this->rc->config->get('date_format', 'Y-m-d'));
	$rec['_hasdate'] = 1;
	}
	catch (Exception $e) {
	$rec['date'] = $rec['datetime'] = null;
	}
	}
	else {
	$rec['date'] = $rec['datetime'] = null;
	$rec['_hasdate'] = 0;
	}

	if ($rec['startdate']) {
	try {
	$date = new DateTime($rec['startdate'] . ' ' . $rec['starttime'], $this->timezone);
	$rec['startdatetime'] = intval($date->format('U'));
	$rec['startdate'] = $date->format($this->rc->config->get('date_format', 'Y-m-d'));
	}
	catch (Exception $e) {
	$rec['startdate'] = $rec['startdatetime'] = null;
	}
	}

	if ($rec['valarms']) {
	$rec['alarms_text'] = libcalendaring::alarms_text($rec['valarms']);
	$rec['valarms'] = libcalendaring::to_client_alarms($rec['valarms']);
	}

	if ($rec['recurrence']) {
	$rec['recurrence_text'] = $this->lib->recurrence_text($rec['recurrence']);
	$rec['recurrence'] = $this->lib->to_client_recurrence($rec['recurrence'], $rec['time'] \|\| $rec['starttime']);
	}

	foreach ((array)$rec['attachments'] as $k => $attachment) {
	$rec['attachments'][$k]['classname'] = rcube_utils::file2class($attachment['mimetype'], $attachment['name']);
	}

	if (!is_array($rec['tags']))
	$rec['tags'] = (array)$rec['tags'];
	sort($rec['tags'], SORT_LOCALE_STRING);

	if (in_array($rec['id'], $this->collapsed_tasks))
	$rec['collapsed'] = true;

	if (empty($rec['parent_id']))
	$rec['parent_id'] = null;

	$this->task_titles[$rec['id']] = $rec['title'];
	}

	/**
	* Callback function for array_walk over all tasks.
	* Sets tree depth and parent titles
	*/
	private function task_walk_tree(&$rec)
	{
	$rec['_depth'] = 0;
	$parent_id = $this->task_tree[$rec['id']];
	while ($parent_id) {
	$rec['_depth']++;
	$rec['parent_title'] = $this->task_titles[$parent_id];
	$parent_id = $this->task_tree[$parent_id];
	}
	}

	/**
	* Compare function for task list sorting.
	* Nested tasks need to be sorted to the end.
	*/
	private function task_sort_cmp($a, $b)
	{
	$d = $a['_depth'] - $b['_depth'];
	if (!$d) $d = $b['_hasdate'] - $a['_hasdate'];
	if (!$d) $d = $a['datetime'] - $b['datetime'];
	return $d;
	}

	/**
	* Compute the filter mask of the given task
	*
	* @param array Hash array with Task record properties
	* @return int Filter mask
	*/
	public function filter_mask($rec)
	{
	static $today, $tomorrow, $weeklimit;

	if (!$today) {
	$today_date = new DateTime('now', $this->timezone);
	$today = $today_date->format('Y-m-d');
	$tomorrow_date = new DateTime('now + 1 day', $this->timezone);
	$tomorrow = $tomorrow_date->format('Y-m-d');
	$week_date = new DateTime('now + 7 days', $this->timezone);
	$weeklimit = $week_date->format('Y-m-d');
	}

	$mask = 0;
	$start = $rec['startdate'] ?: '1900-00-00';
	$duedate = $rec['date'] ?: '3000-00-00';

	if ($rec['flagged'])
	$mask \|= self::FILTER_MASK_FLAGGED;
	if ($this->driver->is_complete($rec))
	$mask \|= self::FILTER_MASK_COMPLETE;

	if (empty($rec['date']))
	$mask \|= self::FILTER_MASK_NODATE;
	else if ($rec['date'] < $today)
	$mask \|= self::FILTER_MASK_OVERDUE;

	if ($duedate <= $today \|\| ($rec['startdate'] && $start <= $today))
	$mask \|= self::FILTER_MASK_TODAY;
	if ($duedate <= $tomorrow \|\| ($rec['startdate'] && $start <= $tomorrow))
	$mask \|= self::FILTER_MASK_TOMORROW;
	if (($start > $tomorrow && $start <= $weeklimit) \|\| ($duedate > $tomorrow && $duedate <= $weeklimit))
	$mask \|= self::FILTER_MASK_WEEK;
	else if ($start > $weeklimit \|\| ($rec['date'] && $duedate > $weeklimit))
	$mask \|= self::FILTER_MASK_LATER;

	return $mask;
	}


	/***** UI functions ******/

	/**
	* Render main view of the tasklist task
	*/
	public function tasklist_view()
	{
	$this->ui->init();
	$this->ui->init_templates();

	// set autocompletion env
	$this->rc->output->set_env('autocomplete_threads', (int)$this->rc->config->get('autocomplete_threads', 0));
	$this->rc->output->set_env('autocomplete_max', (int)$this->rc->config->get('autocomplete_max', 15));
	$this->rc->output->set_env('autocomplete_min_length', $this->rc->config->get('autocomplete_min_length'));
	$this->rc->output->add_label('autocompletechars', 'autocompletemore');

	$this->rc->output->set_pagetitle($this->gettext('navtitle'));
	$this->rc->output->send('tasklist.mainview');
	}


	/**
	*
	*/
	public function get_inline_ui()
	{
	foreach (array('save','cancel','savingdata') as $label)
	$texts['tasklist.'.$label] = $this->gettext($label);

	$texts['tasklist.newtask'] = $this->gettext('createfrommail');

	$this->ui->init_templates();
	echo $this->api->output->parse('tasklist.taskedit', false, false);
	echo html::tag('link', array('rel' => 'stylesheet', 'type' => 'text/css', 'href' => $this->url($this->local_skin_path() . '/tagedit.css'), 'nl' => true));
	echo html::tag('script', array('type' => 'text/javascript'),
	"rcmail.set_env('tasklists', " . json_encode($this->api->output->env['tasklists']) . ");\n".
	"rcmail.add_label(" . json_encode($texts) . ");\n"
	);
	exit;
	}

	/**
	* Handler for keep-alive requests
	* This will check for updated data in active lists and sync them to the client
	*/
	public function refresh($attr)
	{
	// refresh the entire list every 10th time to also sync deleted items
	if (rand(0,10) == 10) {
	$this->rc->output->command('plugin.reload_data');
	return;
	}

	$filter = array(
	'since' => $attr['last'],
	'search' => get_input_value('q', RCUBE_INPUT_GPC),
	'mask' => intval(get_input_value('filter', RCUBE_INPUT_GPC)) & self::FILTER_MASK_COMPLETE,
	);
	$lists = get_input_value('lists', RCUBE_INPUT_GPC);;

	$updates = $this->driver->list_tasks($filter, $lists);
	if (!empty($updates)) {
	$this->rc->output->command('plugin.refresh_tasks', $this->tasks_data($updates, 255, $tags), true);

	// update counts
	$counts = $this->driver->count_tasks($lists);
	$this->rc->output->command('plugin.update_counts', $counts);
	}
	}

	/**
	* Handler for pending_alarms plugin hook triggered by the calendar module on keep-alive requests.
	* This will check for pending notifications and pass them to the client
	*/
	public function pending_alarms($p)
	{
	$this->load_driver();
	if ($alarms = $this->driver->pending_alarms($p['time'] ?: time())) {
	foreach ($alarms as $alarm) {
	// encode alarm object to suit the expectations of the calendaring code
	if ($alarm['date'])
	$alarm['start'] = new DateTime($alarm['date'].' '.$alarm['time'], $this->timezone);

	$alarm['id'] = 'task:' . $alarm['id']; // prefix ID with task:
	$alarm['allday'] = empty($alarm['time']) ? 1 : 0;
	$p['alarms'][] = $alarm;
	}
	}

	return $p;
	}

	/**
	* Handler for alarm dismiss hook triggered by the calendar module
	*/
	public function dismiss_alarms($p)
	{
	$this->load_driver();
	foreach ((array)$p['ids'] as $id) {
	if (strpos($id, 'task:') === 0)
	$p['success'] \|= $this->driver->dismiss_alarm(substr($id, 5), $p['snooze']);
	}

	return $p;
	}


	/***** Attachment handling *****/

	/**
	* Handler for attachments upload
	*/
	public function attachment_upload()
	{
	$this->lib->attachment_upload(self::SESSION_KEY);
	}

	/**
	* Handler for attachments download/displaying
	*/
	public function attachment_get()
	{
	// show loading page
	if (!empty($_GET['_preload'])) {
	return $this->lib->attachment_loading_page();
	}

	$task = get_input_value('_t', RCUBE_INPUT_GPC);
	$list = get_input_value('_list', RCUBE_INPUT_GPC);
	$id = get_input_value('_id', RCUBE_INPUT_GPC);

	$task = array('id' => $task, 'list' => $list);
	$attachment = $this->driver->get_attachment($id, $task);

	// show part page
	if (!empty($_GET['_frame'])) {
	$this->lib->attachment = $attachment;
	$this->register_handler('plugin.attachmentframe', array($this->lib, 'attachment_frame'));
	$this->register_handler('plugin.attachmentcontrols', array($this->lib, 'attachment_header'));
	$this->rc->output->send('tasklist.attachment');
	}
	// deliver attachment content
	else if ($attachment) {
	$attachment['body'] = $this->driver->get_attachment_body($id, $task);
	$this->lib->attachment_get($attachment);
	}

	// if we arrive here, the requested part was not found
	header('HTTP/1.1 404 Not Found');
	exit;
	}


	/***** Email related function *****/

	public function mail_message2task()
	{
	$uid = get_input_value('_uid', RCUBE_INPUT_POST);
	$mbox = get_input_value('_mbox', RCUBE_INPUT_POST);
	$task = array();

	// establish imap connection
	$imap = $this->rc->get_storage();
	$imap->set_mailbox($mbox);
	$message = new rcube_message($uid);

	if ($message->headers) {
	$task['title'] = trim($message->subject);
	$task['description'] = trim($message->first_text_part());
	$task['id'] = -$uid;

	$this->load_driver();

	// copy mail attachments to task
	if ($message->attachments && $this->driver->attachments) {
	if (!is_array($_SESSION[self::SESSION_KEY]) \|\| $_SESSION[self::SESSION_KEY]['id'] != $task['id']) {
	$_SESSION[self::SESSION_KEY] = array();
	$_SESSION[self::SESSION_KEY]['id'] = $task['id'];
	$_SESSION[self::SESSION_KEY]['attachments'] = array();
	}

	foreach ((array)$message->attachments as $part) {
	$attachment = array(
	'data' => $imap->get_message_part($uid, $part->mime_id, $part),
	'size' => $part->size,
	'name' => $part->filename,
	'mimetype' => $part->mimetype,
	'group' => $task['id'],
	);

	$attachment = $this->rc->plugins->exec_hook('attachment_save', $attachment);

	if ($attachment['status'] && !$attachment['abort']) {
	$id = $attachment['id'];
	$attachment['classname'] = rcube_utils::file2class($attachment['mimetype'], $attachment['name']);

	// store new attachment in session
	unset($attachment['status'], $attachment['abort'], $attachment['data']);
	$_SESSION[self::SESSION_KEY]['attachments'][$id] = $attachment;

	$attachment['id'] = 'rcmfile' . $attachment['id']; // add prefix to consider it 'new'
	$task['attachments'][] = $attachment;
	}
	}
	}

	$this->rc->output->command('plugin.mail2taskdialog', $task);
	}
	else {
	$this->rc->output->command('display_message', $this->gettext('messageopenerror'), 'error');
	}

	$this->rc->output->send();
	}

	+ /**
	+ * Check mail message structure of there are .ics files attached
	+ *
	+ * @todo move to libcalendaring
	+ */
	+ public function mail_message_load($p)
	+ {
	+ $this->message = $p['object'];
	+ $itip_part = null;
	+
	+ // check all message parts for .ics files
	+ foreach ((array)$this->message->mime_parts as $part) {
	+ if ($this->is_vcalendar($part)) {
	+ if ($part->ctype_parameters['method'])
	+ $itip_part = $part->mime_id;
	+ else
	+ $this->ics_parts[] = $part->mime_id;
	+ }
	+ }
	+
	+ // priorize part with method parameter
	+ if ($itip_part) {
	+ $this->ics_parts = array($itip_part);
	+ }
	+ }
	+
	+ /**
	+ * Add UI element to copy event invitations or updates to the calendar
	+ *
	+ * @todo move to libcalendaring
	+ */
	+ public function mail_messagebody_html($p)
	+ {
	+ // load iCalendar functions (if necessary)
	+ if (!empty($this->ics_parts)) {
	+ $this->get_ical();
	+ $this->load_itip();
	+ }
	+
	+ // @todo: Calendar plugin does the same, which means the
	+ // attachment body is fetched twice, this is not optimal
	+ $html = '';
	+ foreach ($this->ics_parts as $mime_id) {
	+ $part = $this->message->mime_parts[$mime_id];
	+ $charset = $part->ctype_parameters['charset'] ? $part->ctype_parameters['charset'] : RCMAIL_CHARSET;
	+ $objects = $this->ical->import($this->message->get_part_content($mime_id), $charset);
	+ $title = $this->gettext('title');
	+
	+ // successfully parsed events?
	+ if (empty($objects)) {
	+ continue;
	+ }
	+
	+ // show a box for every task in the file
	+ foreach ($objects as $idx => $task) {
	+ if ($task['_type'] != 'task') {
	+ continue;
	+ }
	+
	+ // get prepared inline UI for this event object
	+ $html .= html::div('tasklist-invitebox',
	+ $this->itip->mail_itip_inline_ui(
	+ $task,
	+ $this->ical->method,
	+ $mime_id . ':' . $idx,
	+ 'tasks',
	+ rcube_utils::anytodatetime($this->message->headers->date)
	+ )
	+ );
	+
	+ // limit listing
	+ if ($idx >= 3) {
	+ break;
	+ }
	+ }
	+ }
	+
	+ // prepend event boxes to message body
	+ if ($html) {
	+ $this->load_ui();
	+ $this->ui->init();
	+
	+ $p['content'] = $html . $p['content'];
	+
	+ $this->rc->output->add_label('tasklist.savingdata','tasklist.deletetaskconfirm','tasklist.declinedeleteconfirm');
	+
	+ // add "Save to calendar" button into attachment menu
	+ $this->add_button(array(
	+ 'id' => 'attachmentsavetask',
	+ 'name' => 'attachmentsavetask',
	+ 'type' => 'link',
	+ 'wrapper' => 'li',
	+ 'command' => 'attachment-save-task',
	+ 'class' => 'icon tasklistlink',
	+ 'classact' => 'icon tasklistlink active',
	+ 'innerclass' => 'icon taskadd',
	+ 'label' => 'tasklist.savetotasklist',
	+ ), 'attachmentmenu');
	+ }
	+
	+ return $p;
	+ }
	+
	+ /**
	+ * Read the given mime message from IMAP and parse ical data
	+ *
	+ * @todo move to libcalendaring
	+ */
	+ private function mail_get_itip_task($mbox, $uid, $mime_id)
	+ {
	+ $charset = RCMAIL_CHARSET;
	+
	+ // establish imap connection
	+ $imap = $this->rc->get_storage();
	+ $imap->set_mailbox($mbox);
	+
	+ if ($uid && $mime_id) {
	+ list($mime_id, $index) = explode(':', $mime_id);
	+
	+ $part = $imap->get_message_part($uid, $mime_id);
	+ $headers = $imap->get_message_headers($uid);
	+
	+ if ($part->ctype_parameters['charset']) {
	+ $charset = $part->ctype_parameters['charset'];
	+ }
	+
	+ if ($part) {
	+ $tasks = $this->get_ical()->import($part, $charset);
	+ }
	+ }
	+
	+ // successfully parsed events?
	+ if (!empty($tasks) && ($task = $tasks[$index])) {
	+ // store the message's sender address for comparisons
	+ $task['_sender'] = preg_match('/([a-z0-9][a-z0-9\-\.\+\_]@[^&@"\'.][^@&"\']\\.([^\\x00-\\x40\\x5b-\\x60\\x7b-\\x7f]{2,}\|xn--[a-z0-9]{2,}))/', $headers->from, $m) ? $m[1] : '';
	+ $askt['_sender_utf'] = rcube_idn_to_utf8($task['_sender']);
	+
	+ return $task;
	+ }
	+
	+ return null;
	+ }
	+
	+ /**
	+ * Checks if specified message part is a vcalendar data
	+ *
	+ * @param rcube_message_part Part object
	+ *
	+ * @return boolean True if part is of type vcard
	+ *
	+ * @todo move to libcalendaring
	+ */
	+ private function is_vcalendar($part)
	+ {
	+ return (
	+ in_array($part->mimetype, array('text/calendar', 'text/x-vcalendar', 'application/ics')) \|\|
	+ // Apple sends files as application/x-any (!?)
	+ ($part->mimetype == 'application/x-any' && $part->filename && preg_match('/\.ics$/i', $part->filename))
	+ );
	+ }
	+
	+ /**
	+ * Load iCalendar functions
	+ */
	+ public function get_ical()
	+ {
	+ if (!$this->ical) {
	+ $this->ical = libcalendaring::get_ical();
	+ }
	+
	+ return $this->ical;
	+ }
	+
	+ /**
	+ * Get properties of the tasklist this user has specified as default
	+ */
	+ public function get_default_tasklist($writeable = false)
	+ {
	+// $default_id = $this->rc->config->get('tasklist_default_list');
	+ $lists = $this->driver->get_lists();
	+// $list = $calendars[$default_id] ?: null;
	+
	+ if (!$list \|\| ($writeable && !$list['editable'])) {
	+ foreach ($lists as $l) {
	+ if ($l['default']) {
	+ $list = $l;
	+ break;
	+ }
	+
	+ if (!$writeable \|\| $l['editable']) {
	+ $first = $l;
	+ }
	+ }
	+ }
	+
	+ return $list ?: $first;
	+ }
	+
	+ /**
	+ * Import the full payload from a mail message attachment
	+ */
	+ public function mail_import_attachment()
	+ {
	+ $uid = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_POST);
	+ $mbox = rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST);
	+ $mime_id = rcube_utils::get_input_value('_part', rcube_utils::INPUT_POST);
	+ $charset = RCMAIL_CHARSET;
	+
	+ // establish imap connection
	+ $imap = $this->rc->get_storage();
	+ $imap->set_mailbox($mbox);
	+
	+ if ($uid && $mime_id) {
	+ $part = $imap->get_message_part($uid, $mime_id);
	+ $headers = $imap->get_message_headers($uid);
	+
	+ if ($part->ctype_parameters['charset']) {
	+ $charset = $part->ctype_parameters['charset'];
	+ }
	+
	+ if ($part) {
	+ $tasks = $this->get_ical()->import($part, $charset);
	+ }
	+ }
	+
	+ $success = $existing = 0;
	+
	+ if (!empty($tasks)) {
	+ // find writeable tasklist to store task
	+ $cal_id = !empty($_REQUEST['_list']) ? rcube_utils::get_input_value('_list', rcube_utils::INPUT_POST) : null;
	+ $lists = $this->driver->get_lists();
	+ $list = $lists[$cal_id] ?: $this->get_default_tasklist(true);
	+
	+ foreach ($tasks as $task) {
	+ // save to tasklist
	+ if ($list && $list['editable'] && $task['_type'] == 'task') {
	+ $task['list'] = $list['id'];
	+
	+ if (!$this->driver->get_task($task['uid'])) {
	+ $success += (bool) $this->driver->create_task($task);
	+ }
	+ else {
	+ $existing++;
	+ }
	+ }
	+ }
	+ }
	+
	+ if ($success) {
	+ $this->rc->output->command('display_message', $this->gettext(array(
	+ 'name' => 'importsuccess',
	+ 'vars' => array('nr' => $success),
	+ )), 'confirmation');
	+ }
	+ else if ($existing) {
	+ $this->rc->output->command('display_message', $this->gettext('importwarningexists'), 'warning');
	+ }
	+ else {
	+ $this->rc->output->command('display_message', $this->gettext('errorimportingtask'), 'error');
	+ }
	+ }
	+
	+ /**
	+ * Handler for POST request to import an event attached to a mail message
	+ */
	+ public function mail_import_itip()
	+ {
	+ $uid = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_POST);
	+ $mbox = rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST);
	+ $mime_id = rcube_utils::get_input_value('_part', rcube_utils::INPUT_POST);
	+ $status = rcube_utils::get_input_value('_status', rcube_utils::INPUT_POST);
	+ $delete = intval(rcube_utils::get_input_value('_del', rcube_utils::INPUT_POST));
	+ $noreply = intval(rcube_utils::get_input_value('_noreply', rcube_utils::INPUT_POST)) \|\| $status == 'needs-action';
	+
	+ $error_msg = $this->gettext('errorimportingtask');
	+ $success = false;
	+
	+ // successfully parsed tasks?
	+ if ($task = $this->mail_get_itip_task($mbox, $uid, $mime_id)) {
	+ // find writeable list to store the task
	+ $list_id = !empty($_REQUEST['_list']) ? rcube_utils::get_input_value('_list', rcube_utils::INPUT_POST) : null;
	+ $lists = $this->driver->get_lists();
	+ $list = $lists[$list_id] ?: $this->get_default_tasklist(true);
	+
	+ $metadata = array(
	+ 'uid' => $task['uid'],
	+ 'changed' => is_object($task['changed']) ? $task['changed']->format('U') : 0,
	+ 'sequence' => intval($task['sequence']),
	+ 'fallback' => strtoupper($status),
	+ 'method' => $this->ical->method,
	+ 'task' => 'tasks',
	+ );
	+
	+ // update my attendee status according to submitted method
	+ if (!empty($status)) {
	+ $organizer = null;
	+ $emails = $this->lib->get_user_emails();
	+
	+ foreach ($task['attendees'] as $i => $attendee) {
	+ if ($attendee['role'] == 'ORGANIZER') {
	+ $organizer = $attendee;
	+ }
	+ else if ($attendee['email'] && in_array(strtolower($attendee['email']), $emails)) {
	+ $metadata['attendee'] = $attendee['email'];
	+ $metadata['rsvp'] = $attendee['role'] != 'NON-PARTICIPANT';
	+ $reply_sender = $attendee['email'];
	+
	+ $task['attendees'][$i]['status'] = strtoupper($status);
	+ if ($task['attendees'][$i]['status'] != 'NEEDS-ACTION') {
	+ unset($task['attendees'][$i]['rsvp']); // remove RSVP attribute
	+ }
	+ }
	+ }
	+
	+ // add attendee with this user's default identity if not listed
	+ if (!$reply_sender) {
	+ $sender_identity = $this->rc->user->get_identity();
	+ $task['attendees'][] = array(
	+ 'name' => $sender_identity['name'],
	+ 'email' => $sender_identity['email'],
	+ 'role' => 'OPT-PARTICIPANT',
	+ 'status' => strtoupper($status),
	+ );
	+ $metadata['attendee'] = $sender_identity['email'];
	+ }
	+ }
	+
	+ // save to tasklist
	+ if ($list && $list['editable']) {
	+ $task['list'] = $list['id'];
	+
	+ // check for existing task with the same UID
	+ $existing = $this->driver->get_task($task['uid']);
	+
	+ if ($existing) {
	+ // only update attendee status
	+ if ($this->ical->method == 'REPLY') {
	+ // try to identify the attendee using the email sender address
	+ $existing_attendee = -1;
	+ foreach ($existing['attendees'] as $i => $attendee) {
	+ if ($task['_sender'] && ($attendee['email'] == $task['_sender'] \|\| $attendee['email'] == $task['_sender_utf'])) {
	+ $existing_attendee = $i;
	+ break;
	+ }
	+ }
	+
	+ $task_attendee = null;
	+ foreach ($task['attendees'] as $attendee) {
	+ if ($task['_sender'] && ($attendee['email'] == $task['_sender'] \|\| $attendee['email'] == $task['_sender_utf'])) {
	+ $task_attendee = $attendee;
	+ $metadata['fallback'] = $attendee['status'];
	+ $metadata['attendee'] = $attendee['email'];
	+ $metadata['rsvp'] = $attendee['rsvp'] \|\| $attendee['role'] != 'NON-PARTICIPANT';
	+ break;
	+ }
	+ }
	+
	+ // found matching attendee entry in both existing and new events
	+ if ($existing_attendee >= 0 && $task_attendee) {
	+ $existing['attendees'][$existing_attendee] = $task_attendee;
	+ $success = $this->driver->edit_task($existing);
	+ }
	+ // update the entire attendees block
	+ else if (($task['sequence'] >= $existing['sequence'] \|\| $task['changed'] >= $existing['changed']) && $task_attendee) {
	+ $existing['attendees'][] = $task_attendee;
	+ $success = $this->driver->edit_task($existing);
	+ }
	+ else {
	+ $error_msg = $this->gettext('newerversionexists');
	+ }
	+ }
	+ // delete the task when declined
	+ else if ($status == 'declined' && $delete) {
	+ $deleted = $this->driver->delete_task($existing, true);
	+ $success = true;
	+ }
	+ // import the (newer) task
	+ else if ($task['sequence'] >= $existing['sequence'] \|\| $task['changed'] >= $existing['changed']) {
	+ $task['id'] = $existing['id'];
	+ $task['list'] = $existing['list'];
	+
	+ // preserve my participant status for regular updates
	+ if (empty($status)) {
	+ $emails = $this->lib->get_user_emails();
	+ foreach ($task['attendees'] as $i => $attendee) {
	+ if ($attendee['email'] && in_array(strtolower($attendee['email']), $emails)) {
	+ foreach ($existing['attendees'] as $j => $_attendee) {
	+ if ($attendee['email'] == $_attendee['email']) {
	+ $task['attendees'][$i] = $existing['attendees'][$j];
	+ break;
	+ }
	+ }
	+ }
	+ }
	+ }
	+
	+ // set status=CANCELLED on CANCEL messages
	+ if ($this->ical->method == 'CANCEL') {
	+ $task['status'] = 'CANCELLED';
	+ }
	+ // show me as free when declined (#1670)
	+ if ($status == 'declined' \|\| $task['status'] == 'CANCELLED') {
	+ $task['free_busy'] = 'free';
	+ }
	+
	+ $success = $this->driver->edit_task($task);
	+ }
	+ else if (!empty($status)) {
	+ $existing['attendees'] = $task['attendees'];
	+ if ($status == 'declined') { // show me as free when declined (#1670)
	+ $existing['free_busy'] = 'free';
	+ }
	+
	+ $success = $this->driver->edit_event($existing);
	+ }
	+ else {
	+ $error_msg = $this->gettext('newerversionexists');
	+ }
	+ }
	+ else if (!$existing && ($status != 'declined' \|\| $this->rc->config->get('kolab_invitation_tasklists'))) {
	+ $success = $this->driver->create_task($task);
	+ }
	+ else if ($status == 'declined') {
	+ $error_msg = null;
	+ }
	+ }
	+ else if ($status == 'declined') {
	+ $error_msg = null;
	+ }
	+ else {
	+ $error_msg = $this->gettext('nowritetasklistfound');
	+ }
	+ }
	+
	+ if ($success) {
	+ $message = $this->ical->method == 'REPLY' ? 'attendeupdateesuccess' : ($deleted ? 'successremoval' : ($existing ? 'updatedsuccessfully' : 'importedsuccessfully'));
	+ $this->rc->output->command('display_message', $this->gettext(array('name' => $message, 'vars' => array('list' => $list['name']))), 'confirmation');
	+
	+ $metadata['rsvp'] = intval($metadata['rsvp']);
	+ $metadata['after_action'] = $this->rc->config->get('tasklist_itip_after_action');
	+
	+ $this->rc->output->command('plugin.itip_message_processed', $metadata);
	+ $error_msg = null;
	+ }
	+ else if ($error_msg) {
	+ $this->rc->output->command('display_message', $error_msg, 'error');
	+ }
	+
	+ // send iTip reply
	+ if ($this->ical->method == 'REQUEST' && $organizer && !$noreply && !in_array(strtolower($organizer['email']), $emails) && !$error_msg) {
	+ $task['comment'] = rcube_utils::get_input_value('_comment', rcube_utils::INPUT_POST);
	+ $itip = $this->load_itip();
	+ $itip->set_sender_email($reply_sender);
	+
	+ if ($itip->send_itip_message($task, 'REPLY', $organizer, 'itipsubject' . $status, 'itipmailbody' . $status))
	+ $this->rc->output->command('display_message', $this->gettext(array('name' => 'sentresponseto', 'vars' => array('mailto' => $organizer['name'] ? $organizer['name'] : $organizer['email']))), 'confirmation');
	+ else
	+ $this->rc->output->command('display_message', $this->gettext('itipresponseerror'), 'error');
	+ }
	+
	+ $this->rc->output->send();
	+ }
	+
	+
	+ /** Task invitation plugin hooks **/
	+
	+ /**
	+ * Handler for calendar/itip-status requests
	+ */
	+ function task_itip_status()
	+ {
	+ $data = rcube_utils::get_input_value('data', rcube_utils::INPUT_POST, true);
	+
	+ // find local copy of the referenced task
	+ $existing = $this->driver->get_task($data);
	+ $itip = $this->load_itip();
	+ $response = $itip->get_itip_status($data, $existing);
	+
	+ // get a list of writeable lists to save new tasks to
	+ if (!$existing && $response['action'] == 'rsvp' \|\| $response['action'] == 'import') {
	+ $lists = $this->driver->get_lists();
	+ $select = new html_select(array('name' => 'tasklist', 'id' => 'itip-saveto', 'is_escaped' => true));
	+ $num = 0;
	+
	+ foreach ($lists as $list) {
	+ if ($list['editable']) {
	+ $select->add($list['name'], $list['id']);
	+ $num++;
	+ }
	+ }
	+
	+ if ($num <= 1) {
	+ $select = null;
	+ }
	+ }
	+
	+ if ($select) {
	+ $default_list = $this->get_default_tasklist(true);
	+ $response['select'] = html::span('folder-select', $this->gettext('saveintasklist') . ' ' .
	+ $select->show($this->rc->config->get('tasklist_default_list', $default_list['id'])));
	+ }
	+
	+ $this->rc->output->command('plugin.update_itip_object_status', $response);
	+ }
	+
	+ /**
	+ * Handler for calendar/itip-remove requests
	+ */
	+ function task_itip_remove()
	+ {
	+ $success = false;
	+ $uid = rcube_utils::get_input_value('uid', rcube_utils::INPUT_POST);
	+
	+ // search for event if only UID is given
	+ if ($task = $this->driver->get_task($uid)) {
	+ $success = $this->driver->delete_task($task, true);
	+ }
	+
	+ if ($success) {
	+ $this->rc->output->show_message('tasklist.successremoval', 'confirmation');
	+ }
	+ else {
	+ $this->rc->output->show_message('tasklist.errorsaving', 'error');
	+ }
	+ }
	+

	/***** Utility functions *****/

	/**
	* Generate a unique identifier for an event
	*/
	public function generate_uid()
	{
	return strtoupper(md5(time() . uniqid(rand())) . '-' . substr(md5($this->rc->user->get_username()), 0, 16));
	}

	/**
	* Handler for user_delete plugin hook
	*/
	public function user_delete($args)
	{
	$this->load_driver();
	return $this->driver->user_delete($args);
	}
	}
	-
	diff --git a/plugins/tasklist/tasklist_base.js b/plugins/tasklist/tasklist_base.js
	index 6e93b15d..81e27f0f 100644
	--- a/plugins/tasklist/tasklist_base.js
	+++ b/plugins/tasklist/tasklist_base.js
	@@ -1,107 +1,132 @@
	/**
	* Client scripts for the Tasklist plugin
	*
	* @author Thomas Bruederli <bruederli@kolabsys.com>
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (C) 2013, Kolab Systems AG <contact@kolabsys.com>
	*
	* This program is free software: you can redistribute it and/or modify
	* it under the terms of the GNU Affero General Public License as
	* published by the Free Software Foundation, either version 3 of the
	* License, or (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU Affero General Public License for more details.
	*
	* You should have received a copy of the GNU Affero General Public License
	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	*
	* @licend The above is the entire license notice
	* for the JavaScript code in this file.
	*/

	function rcube_tasklist(settings)
	{
	/* private vars */
	var ui_loaded = false;
	var me = this;

	/* public members */
	this.ui;

	/* public methods */
	this.create_from_mail = create_from_mail;
	this.mail2taskdialog = mail2task_dialog;
	+ this.save_to_tasklist = save_to_tasklist;


	/**
	* Open a new task dialog prefilled with contents from the currently selected mail message
	*/
	function create_from_mail(uid)
	{
	if (uid \|\| (uid = rcmail.get_single_uid())) {
	// load calendar UI (scripts and edit dialog template)
	if (!ui_loaded) {
	$.when(
	$.getScript('./plugins/tasklist/tasklist.js'),
	$.getScript('./plugins/tasklist/jquery.tagedit.js'),
	$.get(rcmail.url('tasks/inlineui'), function(html){ $(document.body).append(html); }, 'html')
	).then(function() {
	// register attachments form
	// rcmail.gui_object('attachmentlist', 'attachmentlist');

	ui_loaded = true;
	me.ui = new rcube_tasklist_ui(settings);
	create_from_mail(uid); // start over
	});
	return;
	}
	else {
	// get message contents for task dialog
	var lock = rcmail.set_busy(true, 'loading');
	rcmail.http_post('tasks/mail2task', {
	'_mbox': rcmail.env.mailbox,
	'_uid': uid
	}, lock);
	}
	}
	}

	/**
	* Callback function to put the given task properties into the dialog
	*/
	function mail2task_dialog(prop)
	{
	this.ui.edit_task(null, 'new', prop);
	}

	+ // handler for attachment-save-tasklist commands
	+ function save_to_tasklist()
	+ {
	+ // TODO: show dialog to select the tasklist for importing
	+ if (this.selected_attachment && window.rcube_libcalendaring) {
	+ rcmail.http_post('tasks/mailimportattach', {
	+ _uid: rcmail.env.uid,
	+ _mbox: rcmail.env.mailbox,
	+ _part: this.selected_attachment,
	+ // _list: $('#tasklist-attachment-saveto').val(),
	+ }, rcmail.set_busy(true, 'itip.savingdata'));
	+ }
	+ }
	+
	}

	/* tasklist plugin initialization (for email task) */
	window.rcmail && rcmail.env.task == 'mail' && rcmail.addEventListener('init', function(evt) {
	var tasks = new rcube_tasklist(rcmail.env.libcal_settings);

	- rcmail.register_command('tasklist-create-from-mail', function() { tasks.create_from_mail() });
	- rcmail.addEventListener('plugin.mail2taskdialog', function(p){ tasks.mail2taskdialog(p) });
	- rcmail.addEventListener('plugin.unlock_saving', function(p){ tasks.ui && tasks.ui.unlock_saving(); });
	+ rcmail.register_command('tasklist-create-from-mail', function() { tasks.create_from_mail(); });
	+ rcmail.register_command('attachment-save-task', function() { tasks.save_to_tasklist(); });
	+ rcmail.addEventListener('plugin.mail2taskdialog', function(p) { tasks.mail2taskdialog(p); });
	+ rcmail.addEventListener('plugin.unlock_saving', function(p) { tasks.ui && tasks.ui.unlock_saving(); });

	if (rcmail.env.action != 'show')
	rcmail.env.message_commands.push('tasklist-create-from-mail');
	else
	rcmail.enable_command('tasklist-create-from-mail', true);

	+ rcmail.addEventListener('beforemenu-open', function(p) {
	+ if (p.menu == 'attachmentmenu') {
	+ tasks.selected_attachment = p.id;
	+ var mimetype = rcmail.env.attachments[p.id],
	+ is_ics = mimetype == 'text/calendar' \|\| mimetype == 'text/x-vcalendar' \|\| mimetype == 'application/ics';
	+
	+ rcmail.enable_command('attachment-save-task', is_ics);
	+ }
	+ });
	+
	// add contextmenu item
	if (window.rcm_contextmenu_register_command) {
	rcm_contextmenu_register_command(
	'tasklist-create-from-mail',
	function(cmd,el){ tasks.create_from_mail() },
	'tasklist.createfrommail',
	'moveto');
	}
	});
	-

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