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/**
 * Copyright (c) 2014, Arthur Schiwon <blizzz@owncloud.com>
 * Copyright (c) 2014, Raghu Nayyar <beingminimal@gmail.com>
 * Copyright (c) 2011, Robin Appelman <icewind1991@gmail.com>
 * This file is licensed under the Affero General Public License version 3 or later.
 * See the COPYING-README file.
 */

/* globals escapeHTML, GroupList, DeleteHandler, UserManagementFilter */

var $userList;
var $userListBody;
var $emptyContainer;

var UserDeleteHandler;
var UserList = {
	availableGroups: [],
	offset: 0,
	usersToLoad: 10, //So many users will be loaded when user scrolls down
	initialUsersToLoad: 50, //initial number of users to load
	currentGid: '',
	filter: '',

	/**
	 * Initializes the user list
	 * @param $el user list table element
	 */
	initialize: function ($el) {
		this.$el = $el;

		// initially the list might already contain user entries (not fully ajaxified yet)
		// initialize these entries
		this.$el.find('.quota-user').singleSelect().on('change', this.onQuotaSelect);
	},

	/**
	 * Add a user row from user object
	 *
	 * @param user object containing following keys:
	 *            {
	 * 				'name': 			'username',
	 * 				'displayname': 		'Users display name',
	 * 				'groups': 			['group1', 'group2'],
	 * 				'subadmin': 		['group4', 'group5'],
	 *				'quota': 			'10 GB',
	 *				'quota_bytes':		'10737418240',
	 *				'storageLocation':	'/srv/www/owncloud/data/username',
	 *				'lastLogin':		'1418632333'
	 *				'backend':			'LDAP',
	 *				'email':			'username@example.org'
	 *				'isRestoreDisabled':false
	 *				'isEnabled':		true,
	 *				'size':				156789
	 * 			}
	 */
	add: function (user) {
		if (this.currentGid && this.currentGid !== '_everyone' && this.currentGid !== '_disabledUsers' && _.indexOf(user.groups, this.currentGid) < 0) {
			return false;
		}

		var $tr = $userListBody.find('tr:first-child').clone();
		// this removes just the `display:none` of the template row
		$tr.removeAttr('style');

		/**
		 * Avatar or placeholder
		 */
		if ($tr.find('div.avatardiv').length) {
			if (user.isAvatarAvailable === true) {
				$('div.avatardiv', $tr).avatar(user.name, 32, undefined, undefined, undefined, user.displayname);
			} else {
				$('div.avatardiv', $tr).imageplaceholder(user.displayname, undefined, 32);
			}
		}

		/**
		 * add username and displayname to row (in data and visible markup)
		 */
		$tr.data('uid', user.name);
		$tr.data('displayname', user.displayname);
		$tr.data('mailAddress', user.email);
		$tr.data('restoreDisabled', user.isRestoreDisabled);
		$tr.data('userEnabled', user.isEnabled);
		$tr.find('.name').text(user.name);
		$tr.find('td.displayName > span').text(user.displayname);
		$tr.find('td.mailAddress > span').text(user.email);
		$tr.find('td.displayName > .action').tooltip({placement: 'top'});
		$tr.find('td.mailAddress > .action').tooltip({placement: 'top'});
		$tr.find('td.password > .action').tooltip({placement: 'top'});


		/**
		 * groups and subadmins
		 */
		var $tdGroups = $tr.find('td.groups');
		this._updateGroupListLabel($tdGroups, user.groups);
		$tdGroups.find('.action').tooltip({placement: 'top'});

		var $tdSubadmins = $tr.find('td.subadmins');
		this._updateGroupListLabel($tdSubadmins, user.subadmin);
		$tdSubadmins.find('.action').tooltip({placement: 'top'});

		/**
		 * hide user actions menu for current user
		 */
		if (OC.currentUser === user.name) {
			$tr.find('td.userActions').empty();
		}

		/**
		 * quota
		 */
		UserList.updateQuotaProgressbar($tr, user.quota_bytes, user.size);
		$tr.data('size', user.size);
		var $quotaSelect = $tr.find('.quota-user');
		var humanSize = humanFileSize(user.size, true);
		$quotaSelect.tooltip({
			title:  t('settings', '{size} used', {size: humanSize}, 0 , {escape: false}).replace('&lt;', '<'),
			delay: {
				show: 100,
				hide: 0
			}
		});
		if (user.quota === 'default') {
			$quotaSelect
				.data('previous', 'default')
				.find('option').attr('selected', null)
				.first().attr('selected', 'selected');
		} else {
			var $options = $quotaSelect.find('option');
			var $foundOption = $options.filterAttr('value', user.quota);
			if ($foundOption.length > 0) {
				$foundOption.attr('selected', 'selected');
			} else {
				// append before "Other" entry
				$options.last().before('<option value="' + escapeHTML(user.quota) + '" selected="selected">' + escapeHTML(user.quota) + '</option>');
			}
		}

		/**
		 * storage location
		 */
		$tr.find('td.storageLocation').text(user.storageLocation);

		/**
		 * user backend
		 */
		$tr.find('td.userBackend').text(user.backend);

		/**
		 * last login
		 */
		var lastLoginRel = t('settings', 'never');
		var lastLoginAbs = lastLoginRel;
		if (user.lastLogin !== 0) {
			lastLoginRel = OC.Util.relativeModifiedDate(user.lastLogin);
			lastLoginAbs = OC.Util.formatDate(user.lastLogin);
		}
		var $tdLastLogin = $tr.find('td.lastLogin');
		$tdLastLogin.text(lastLoginRel);
		$tdLastLogin.attr('title', lastLoginAbs);
		// setup tooltip with #app-content as container to prevent the td to resize on hover
		$tdLastLogin.tooltip({placement: 'top', container: '#app-content'});

		/**
		 * append generated row to user list
		 */
		$tr.appendTo($userList);

		$quotaSelect.on('change', UserList.onQuotaSelect);

		// defer init so the user first sees the list appear more quickly
		window.setTimeout(function () {
			$quotaSelect.singleSelect();
		}, 0);
	},
	// From http://my.opera.com/GreyWyvern/blog/show.dml/1671288
	alphanum: function (a, b) {
		function chunkify (t) {
			var tz = [], x = 0, y = -1, n = 0, i, j;

			while (i = (j = t.charAt(x++)).charCodeAt(0)) {
				var m = (i === 46 || (i >= 48 && i <= 57));
				if (m !== n) {
					tz[++y] = "";
					n = m;
				}
				tz[y] += j;
			}
			return tz;
		}

		var aa = chunkify(a.toLowerCase());
		var bb = chunkify(b.toLowerCase());

		for (var x = 0; aa[x] && bb[x]; x++) {
			if (aa[x] !== bb[x]) {
				var c = Number(aa[x]), d = Number(bb[x]);
				if (c === aa[x] && d === bb[x]) {
					return c - d;
				} else {
					return (aa[x] > bb[x]) ? 1 : -1;
				}
			}
		}
		return aa.length - bb.length;
	},
	preSortSearchString: function (a, b) {
		var pattern = this.filter;
		if (typeof pattern === 'undefined') {
			return undefined;
		}
		pattern = pattern.toLowerCase();
		var aMatches = false;
		var bMatches = false;
		if (typeof a === 'string' && a.toLowerCase().indexOf(pattern) === 0) {
			aMatches = true;
		}
		if (typeof b === 'string' && b.toLowerCase().indexOf(pattern) === 0) {
			bMatches = true;
		}

		if ((aMatches && bMatches) || (!aMatches && !bMatches)) {
			return undefined;
		}

		if (aMatches) {
			return -1;
		} else {
			return 1;
		}
	},
	doSort: function () {
		// some browsers like Chrome lose the scrolling information
		// when messing with the list elements
		var lastScrollTop = this.scrollArea.scrollTop();
		var lastScrollLeft = this.scrollArea.scrollLeft();
		var rows = $userListBody.find('tr').get();

		rows.sort(function (a, b) {
			// FIXME: inefficient way of getting the names,
			// better use a data attribute
			a = $(a).find('.name').text();
			b = $(b).find('.name').text();
			var firstSort = UserList.preSortSearchString(a, b);
			if (typeof firstSort !== 'undefined') {
				return firstSort;
			}
			return OC.Util.naturalSortCompare(a, b);
		});

		var items = [];
		$.each(rows, function (index, row) {
			items.push(row);
			if (items.length === 100) {
				$userListBody.append(items);
				items = [];
			}
		});
		if (items.length > 0) {
			$userListBody.append(items);
		}
		this.scrollArea.scrollTop(lastScrollTop);
		this.scrollArea.scrollLeft(lastScrollLeft);
	},
	checkUsersToLoad: function () {
		//30 shall be loaded initially, from then on always 10 upon scrolling
		if (UserList.isEmpty === false) {
			UserList.usersToLoad = 10;
		} else {
			UserList.usersToLoad = UserList.initialUsersToLoad;
		}
	},
	empty: function () {
		//one row needs to be kept, because it is cloned to add new rows
		$userListBody.find('tr:not(:first)').remove();
		var $tr = $userListBody.find('tr:first');
		$tr.hide();
		//on an update a user may be missing when the username matches with that
		//of the hidden row. So change this to a random string.
		$tr.data('uid', Math.random().toString(36).substring(2));
		UserList.isEmpty = true;
		UserList.offset = 0;
		UserList.checkUsersToLoad();
	},
	hide: function (uid) {
		UserList.getRow(uid).hide();
	},
	show: function (uid) {
		UserList.getRow(uid).show();
	},
	markRemove: function (uid) {
		var $tr = UserList.getRow(uid);
		var groups = $tr.find('.groups').data('groups');
		for (var i in groups) {
			var gid = groups[i];
			var $li = GroupList.getGroupLI(gid);
			var userCount = GroupList.getUserCount($li);
			GroupList.setUserCount($li, userCount - 1);
		}
		GroupList.decEveryoneCount();
		UserList.hide(uid);
	},
	remove: function (uid) {
		UserList.getRow(uid).remove();
	},
	undoRemove: function (uid) {
		var $tr = UserList.getRow(uid);
		var groups = $tr.find('.groups').data('groups');
		for (var i in groups) {
			var gid = groups[i];
			var $li = GroupList.getGroupLI(gid);
			var userCount = GroupList.getUserCount($li);
			GroupList.setUserCount($li, userCount + 1);
		}
		GroupList.incEveryoneCount();
		UserList.getRow(uid).show();
	},
	has: function (uid) {
		return UserList.getRow(uid).length > 0;
	},
	getRow: function (uid) {
		return $userListBody.find('tr').filter(function () {
			return UserList.getUID(this) === uid;
		});
	},
	getUID: function (element) {
		return ($(element).closest('tr').data('uid') || '').toString();
	},
	getDisplayName: function (element) {
		return ($(element).closest('tr').data('displayname') || '').toString();
	},
	getMailAddress: function (element) {
		return ($(element).closest('tr').data('mailAddress') || '').toString();
	},
	getRestoreDisabled: function (element) {
		return ($(element).closest('tr').data('restoreDisabled') || '');
	},
	getUserEnabled: function (element) {
		return ($(element).closest('tr').data('userEnabled') || '');
	},
	initDeleteHandling: function () {
		//set up handler
		UserDeleteHandler = new DeleteHandler('/settings/users/users', 'username',
			UserList.markRemove, UserList.remove);

		//configure undo
		OC.Notification.hide();
		var msg = escapeHTML(t('settings', 'deleted {userName}', {userName: '%oid'})) + '<span class="undo">' +
			escapeHTML(t('settings', 'undo')) + '</span>';
		UserDeleteHandler.setNotification(OC.Notification, 'deleteuser', msg,
			UserList.undoRemove);

		//when to mark user for delete
		$userListBody.on('click', '.action-remove', function () {
			// Call function for handling delete/undo
			var uid = UserList.getUID(this);

			if (OC.PasswordConfirmation.requiresPasswordConfirmation()) {
				OC.PasswordConfirmation.requirePasswordConfirmation(function () {
					UserDeleteHandler.mark(uid);
				});
				return;
			}

			UserDeleteHandler.mark(uid);
		});

		//delete a marked user when leaving the page
		$(window).on('beforeunload', function () {
			UserDeleteHandler.deleteEntry();
		});
	},
	update: function (gid, limit) {
		if (UserList.updating) {
			return;
		}
		if (!limit) {
			limit = UserList.usersToLoad;
		}
		$userList.siblings('.loading').css('visibility', 'visible');
		UserList.updating = true;
		if (gid === undefined) {
			gid = '';
		}
		UserList.currentGid = gid;
		var pattern = this.filter;
		$.get(
			OC.generateUrl('/settings/users/users'),
			{offset: UserList.offset, limit: limit, gid: gid, pattern: pattern},
			function (result) {
				//The offset does not mirror the amount of users available,
				//because it is backend-dependent. For correct retrieval,
				//always the limit(requested amount of users) needs to be added.
				$.each(result, function (index, user) {
					if (UserList.has(user.name)) {
						return true;
					}
					UserList.add(user);
				});

				if (result.length > 0) {
					UserList.doSort();
					$userList.siblings('.loading').css('visibility', 'hidden');
					// reset state on load
					UserList.noMoreEntries = false;
					$userListHead.show();
					$emptyContainer.hide();
					$emptyContainer.find('h2').text('');
				}
				else {
					UserList.noMoreEntries = true;
					$userList.siblings('.loading').remove();

					if (pattern !== "") {
						$userListHead.hide();
						$emptyContainer.show();
						$emptyContainer.find('h2').html(t('settings', 'No user found for <strong>{pattern}</strong>', {pattern: pattern}));
					}
				}
				UserList.offset += limit;
			}).always(function () {
			UserList.updating = false;
		});
	},

	applyGroupSelect: function (element, user, checked) {
		if (OC.PasswordConfirmation.requiresPasswordConfirmation()) {
			OC.PasswordConfirmation.requirePasswordConfirmation(_.bind(this.applyGroupSelect, this, element, user, checked));
			return;
		}

		var $element = $(element);

		var addUserToGroup = null,
			removeUserFromGroup = null;
		if (user) { // Only if in a user row, and not the #newusergroups select
			var handleUserGroupMembership = function (group, add) {
				if (user === OC.getCurrentUser().uid && group === 'admin') {
					return false;
				}
				if (!OC.isUserAdmin() && checked.length === 1 && checked[0] === group) {
					return false;
				}

				if (add && OC.isUserAdmin() && UserList.availableGroups.indexOf(group) === -1) {
					GroupList.createGroup(group);
					if (UserList.availableGroups.indexOf(group) === -1) {
						UserList.availableGroups.push(group);
					}
				}

				$.ajax({
					url: OC.linkToOCS('cloud/users/' + user, 2) + 'groups',
					data: {
						groupid: group
					},
					type: add ? 'POST' : 'DELETE',
					beforeSend: function (request) {
						request.setRequestHeader('Accept', 'application/json');
					},
					success: function () {
						GroupList.update();
						if (add && UserList.availableGroups.indexOf(group) === -1) {
							UserList.availableGroups.push(group);
						}

						if (add) {
							GroupList.incGroupCount(group);
						} else {
							GroupList.decGroupCount(group);
						}
					},
					error: function () {
						if (add) {
							OC.Notification.show(t('settings', 'Unable to add user to group {group}', {
								group: group
							}));
						} else {
							OC.Notification.show(t('settings', 'Unable to remove user from group {group}', {
								group: group
							}));
						}
					}
				});
			};
			addUserToGroup = function (group) {
				return handleUserGroupMembership(group, true);
			};
			removeUserFromGroup = function (group) {
				return handleUserGroupMembership(group, false);
			};
		}
		var addGroup = function (select, group) {
			GroupList.addGroup(escapeHTML(group));
		};
		var label;
		if (OC.isUserAdmin()) {
			label = t('settings', 'Add group');
		}
		else {
			label = null;
		}
		$element.multiSelect({
			createCallback: addGroup,
			createText: label,
			selectedFirst: true,
			checked: checked,
			oncheck: addUserToGroup,
			onuncheck: removeUserFromGroup,
			minWidth: 100
		});
	},

	applySubadminSelect: function (element, user, checked) {
		if (OC.PasswordConfirmation.requiresPasswordConfirmation()) {
			OC.PasswordConfirmation.requirePasswordConfirmation(_.bind(this.applySubadminSelect, this, element, user, checked));
			return;
		}

		var $element = $(element);
		var checkHandler = function (group) {
			if (group === 'admin') {
				return false;
			}
			$.post(
				OC.filePath('settings', 'ajax', 'togglesubadmins.php'),
				{
					username: user,
					group: group
				},
				function (response) {
					if (response.data !== undefined && response.data.message) {
						OC.Notification.show(response.data.message);
					}
				}
			);
		};

		$element.multiSelect({
			createText: null,
			checked: checked,
			oncheck: checkHandler,
			onuncheck: checkHandler,
			minWidth: 100
		});
	},

	_onScroll: function () {
		if (!!UserList.noMoreEntries) {
			return;
		}
		if (UserList.scrollArea.scrollTop() + UserList.scrollArea.height() > UserList.scrollArea.get(0).scrollHeight - 500) {
			UserList.update(UserList.currentGid);
		}
	},

	updateQuotaProgressbar: function ($tr, quota, size) {
		var usedQuota;
		if (quota > 0) {
			usedQuota = Math.min(100, Math.round(size / quota * 100));
		} else {
			var usedInGB = size / (10 * Math.pow(2, 30));
			//asymptotic curve approaching 50% at 10GB to visualize used stace with infinite quota
			usedQuota = 95 * (1 - (1 / (usedInGB + 1)));
		}
		$tr.find('.quota-user-progress').val( isNaN(usedQuota) ? 0 : usedQuota );
		if (usedQuota > 80) {
			$tr.find('.quota-user-progress').addClass('warn');
		} else {
			$tr.find('.quota-user-progress').removeClass('warn');
		}
	},

	/**
	 * Event handler for when a quota has been changed through a single select.
	 * This will save the value.
	 */
	onQuotaSelect: function (ev) {
		var $select = $(ev.target);
		var $tr = $select.closest('tr');
		const size = $tr.data('size');
		var uid = UserList.getUID($select);
		var quota = $select.val();
		if (quota === 'other') {
			return;
		}
		if (quota !== 'default' && quota !== "none" && OC.Util.computerFileSize(quota) === null) {
			// the select component has added the bogus value, delete it again
			$select.find('option[selected]').remove();
			OC.Notification.showTemporary(t('core', 'Invalid quota value "{val}"', {val: quota}));
			return;
		}

		UserList._updateQuota(uid, quota, function (returnedQuota) {
			if (quota !== returnedQuota) {
				$select.find(':selected').text(returnedQuota);
				UserList.updateQuotaProgressbar($tr, OC.Util.computerFileSize(returnedQuota), size);
			}
		});

		UserList.updateQuotaProgressbar($tr, OC.Util.computerFileSize(quota), size);
		// remove the background color that the "other" option placed on the select
		$select.css('background-color', 'transparent');
	},

	/**
	 * Saves the quota for the given user
	 * @param {String} [uid] optional user id, sets default quota if empty
	 * @param {String} quota quota value
	 * @param {Function} ready callback after save
	 */
	_updateQuota: function (uid, quota, ready) {
		if (OC.PasswordConfirmation.requiresPasswordConfirmation()) {
			OC.PasswordConfirmation.requirePasswordConfirmation(_.bind(this._updateQuota, this, uid, quota, ready));
			return;
		}

		$.post(
			OC.filePath('settings', 'ajax', 'setquota.php'),
			{username: uid, quota: quota},
			function (result) {
				if (result.status === 'error') {
					OC.Notification.showTemporary(result.data.message);
				} else {
					if (ready) {
						ready(result.data.quota);
					}
				}
			}
		);
	},

	/**
	 * Creates a temporary jquery.multiselect selector on the given group field
	 */
	_triggerGroupEdit: function ($td, isSubadminSelect) {
		var $groupsListContainer = $td.find('.groupsListContainer');
		var placeholder = $groupsListContainer.attr('data-placeholder') || t('settings', 'no group');
		var user = UserList.getUID($td);
		var checked = $td.data('groups') || [];
		var extraGroups = [].concat(checked);

		$td.find('.multiselectoptions').remove();

		// jquery.multiselect can only work with select+options in DOM ? We'll give jquery.multiselect what it wants...
		var $groupsSelect;
		if (isSubadminSelect) {
			$groupsSelect = $('<select multiple="multiple" class="groupsselect multiselect button" title="' + placeholder + '"></select>');
		} else {
			$groupsSelect = $('<select multiple="multiple" class="subadminsselect multiselect button" title="' + placeholder + '"></select>')
		}

		function createItem (group) {
			if (isSubadminSelect && group === 'admin') {
				// can't become subadmin of "admin" group
				return;
			}
			$groupsSelect.append($('<option value="' + escapeHTML(group) + '">' + escapeHTML(group) + '</option>'));
		}

		$.each(this.availableGroups, function (i, group) {
			// some new groups might be selected but not in the available groups list yet
			var extraIndex = extraGroups.indexOf(group);
			if (extraIndex >= 0) {
				// remove extra group as it was found
				extraGroups.splice(extraIndex, 1);
			}
			createItem(group);
		});
		$.each(extraGroups, function (i, group) {
			createItem(group);
		});

		$td.append($groupsSelect);

		if (isSubadminSelect) {
			UserList.applySubadminSelect($groupsSelect, user, checked);
		} else {
			UserList.applyGroupSelect($groupsSelect, user, checked);
		}

		$groupsListContainer.addClass('hidden');
		$td.find('.multiselect:not(.groupsListContainer):first').click();
		$groupsSelect.on('dropdownclosed', function (e) {
			$groupsSelect.remove();
			$td.find('.multiselect:not(.groupsListContainer)').parent().remove();
			$td.find('.multiselectoptions').remove();
			$groupsListContainer.removeClass('hidden');
			UserList._updateGroupListLabel($td, e.checked);
		});
	},

	/**
	 * Updates the groups list td with the given groups selection
	 */
	_updateGroupListLabel: function ($td, groups) {
		var placeholder = $td.find('.groupsListContainer').attr('data-placeholder');
		var $groupsEl = $td.find('.groupsList');
		$groupsEl.text(groups.join(', ') || placeholder || t('settings', 'no group'));
		$td.data('groups', groups);
	}
};

$(document).ready(function () {
	OC.Plugins.attach('OC.Settings.UserList', UserList);
	$userList = $('#userlist');
	$userListBody = $userList.find('tbody');
	$userListHead = $userList.find('thead');
	$emptyContainer = $userList.siblings('.emptycontent');

	UserList.initDeleteHandling();

	// Implements User Search
	OCA.Search.users = new UserManagementFilter(UserList, GroupList);

	UserList.scrollArea = $('#app-content');

	UserList.doSort();
	UserList.availableGroups = $userList.data('groups');

	UserList.scrollArea.scroll(function (e) {
		UserList._onScroll(e);
	});

	$userList.after($('<div class="loading" style="height: 200px; visibility: hidden;"></div>'));

	// TODO: move other init calls inside of initialize
	UserList.initialize($('#userlist'));

	var _submitPasswordChange = function (uid, password, recoveryPasswordVal, blurFunction) {
		if (OC.PasswordConfirmation.requiresPasswordConfirmation()) {
			OC.PasswordConfirmation.requirePasswordConfirmation(function () {
				_submitPasswordChange(uid, password, recoveryPasswordVal, blurFunction);
			});
			return;
		}

		$.post(
			OC.generateUrl('/settings/users/changepassword'),
			{
				username: uid,
				password: password,
				recoveryPassword: recoveryPasswordVal
			},
			function (result) {
				blurFunction();
				if (result.status === 'success') {
					OC.Notification.showTemporary(t('admin', 'Password successfully changed'));
				} else {
					OC.Notification.showTemporary(t('admin', result.data.message));
				}
			}
		).fail(blurFunction);
	};

	$userListBody.on('click', '.password', function (event) {
		event.stopPropagation();

		var $td = $(this).closest('td');
		var $tr = $(this).closest('tr');
		var uid = UserList.getUID($td);
		var $input = $('<input type="password">');
		var isRestoreDisabled = UserList.getRestoreDisabled($td) === true;
		var blurFunction = function () {
			$(this).replaceWith($('<span>●●●●●●●</span>'));
			$td.find('img').show();
			// remove highlight class from users without recovery ability
			$tr.removeClass('row-warning');
		};
		blurFunction = _.bind(blurFunction, $input);
		if (isRestoreDisabled) {
			$tr.addClass('row-warning');
			// add tooltip if the password change could cause data loss - no recovery enabled
			$input.attr('title', t('settings', 'Changing the password will result in data loss, because data recovery is not available for this user'));
			$input.tooltip({placement: 'bottom'});
		}
		$td.find('img').hide();
		$td.children('span').replaceWith($input);
		$input
			.focus()
			.keypress(function (event) {
				if (event.keyCode === 13) {
					if ($(this).val().length > 0) {
						var recoveryPasswordVal = $('input:password[id="recoveryPassword"]').val();
						$input.off('blur');
						_submitPasswordChange(uid, $(this).val(), recoveryPasswordVal, blurFunction);
					} else {
						$input.blur();
					}
				}
			})
			.blur(blurFunction);
	});
	$('input:password[id="recoveryPassword"]').keyup(function () {
		OC.Notification.hide();
	});

	var _submitDisplayNameChange = function ($tr, uid, displayName, blurFunction) {
		var $div = $tr.find('div.avatardiv');
		if ($div.length) {
			$div.imageplaceholder(uid, displayName);
		}

		if (OC.PasswordConfirmation.requiresPasswordConfirmation()) {
			OC.PasswordConfirmation.requirePasswordConfirmation(function () {
				_submitDisplayNameChange($tr, uid, displayName, blurFunction);
			});
			return;
		}

		$.ajax({
			type: 'POST',
			url: OC.generateUrl('/settings/users/{id}/displayName', {id: uid}),
			data: {
				username: uid,
				displayName: displayName
			}
		}).success(function (result) {
			if (result && result.status === 'success' && $div.length) {
				$div.avatar(result.data.username, 32);
			}
			$tr.data('displayname', displayName);
			blurFunction();
		}).fail(function (result) {
			OC.Notification.showTemporary(result.responseJSON.message);
			$tr.find('.displayName input').blur(blurFunction);
		});
	};

	$userListBody.on('click', '.displayName', function (event) {
		event.stopPropagation();
		var $td = $(this).closest('td');
		var $tr = $td.closest('tr');
		var uid = UserList.getUID($td);
		var displayName = escapeHTML(UserList.getDisplayName($td));
		var $input = $('<input type="text" value="' + displayName + '">');
		var blurFunction = function () {
			var displayName = $tr.data('displayname');
			$input.replaceWith('<span>' + escapeHTML(displayName) + '</span>');
			$td.find('img').show();
		};
		$td.find('img').hide();
		$td.children('span').replaceWith($input);
		$input
			.focus()
			.keypress(function (event) {
				if (event.keyCode === 13) {
					if ($(this).val().length > 0) {
						$input.off('blur');
						_submitDisplayNameChange($tr, uid, $(this).val(), blurFunction);
					} else {
						$input.blur();
					}
				}
			})
			.blur(blurFunction);
	});

	var _submitEmailChange = function ($tr, $td, $input, uid, mailAddress, blurFunction) {
		if (OC.PasswordConfirmation.requiresPasswordConfirmation()) {
			OC.PasswordConfirmation.requirePasswordConfirmation(function () {
				_submitEmailChange($tr, $td, $input, uid, mailAddress, blurFunction);
			});
			return;
		}

		$.ajax({
			type: 'PUT',
			url: OC.generateUrl('/settings/users/{id}/mailAddress', {id: uid}),
			data: {
				mailAddress: mailAddress
			}
		}).success(function () {
			// set data attribute to new value
			// will in blur() be used to show the text instead of the input field
			$tr.data('mailAddress', mailAddress);
			$td.find('.loading-small').css('display', '');
			$input.removeAttr('disabled')
				.triggerHandler('blur'); // needed instead of $input.blur() for Firefox
			blurFunction();
		}).fail(function (result) {
			if (!_.isUndefined(result.responseJSON.data)) {
				OC.Notification.showTemporary(result.responseJSON.data.message);
			} else if (!_.isUndefined(result.responseJSON.message)) {
				OC.Notification.showTemporary(result.responseJSON.message);
			} else {
				OC.Notification.showTemporary(t('settings', 'Could not change the users email'));
			}
			$td.find('.loading-small').css('display', '');
			$input.removeAttr('disabled')
				.css('padding-right', '6px');
			$input.blur(blurFunction);
		});
	};

	$userListBody.on('click', '.mailAddress', function (event) {
		event.stopPropagation();
		var $td = $(this).closest('td');
		var $tr = $td.closest('tr');
		var uid = UserList.getUID($td);
		var mailAddress = escapeHTML(UserList.getMailAddress($td));
		var $input = $('<input type="text">').val(mailAddress);
		var blurFunction = function () {
			if ($td.find('.loading-small').css('display') === 'inline-block') {
				// in Chrome the blur event is fired too early by the browser - even if the request is still running
				return;
			}
			var $span = $('<span>').text($tr.data('mailAddress'));
			$input.replaceWith($span);
			$td.find('img').show();
		};
		$td.children('span').replaceWith($input);
		$td.find('img').hide();
		$input
			.focus()
			.keypress(function (event) {
				if (event.keyCode === 13) {
					// enter key

					$td.find('.loading-small').css('display', 'inline-block');
					$input.css('padding-right', '26px');
					$input.attr('disabled', 'disabled');
					$input.off('blur');
					_submitEmailChange($tr, $td, $input, uid, $(this).val(), blurFunction);
				}
			})
			.blur(blurFunction);
	});

	$('#newuser .groupsListContainer').on('click', function (event) {
		event.stopPropagation();
		var $div = $(this).closest('.groups');
		UserList._triggerGroupEdit($div);
	});
	$userListBody.on('click', '.groups .groupsListContainer, .subadmins .groupsListContainer', function (event) {
		event.stopPropagation();
		var $td = $(this).closest('td');
		var isSubadminSelect = $td.hasClass('subadmins');
		UserList._triggerGroupEdit($td, isSubadminSelect);
	});

	$userListBody.on('click', '.toggleUserActions > .action', function (event) {
		event.stopPropagation();
		var $td = $(this).closest('td');
		var $tr = $($td).closest('tr');
		var menudiv = $tr.find('.popovermenu');

		if ($tr.is('.active')) {
			$tr.removeClass('active');
			menudiv.removeClass('open');
			return;
		}
		$('#userlist tr.active').removeClass('active');
		$('#userlist .popovermenu').removeClass('open');
		menudiv.addClass('open');
		menudiv.find('.action-togglestate').empty();
		if ($tr.data('userEnabled')) {
			$('.action-togglestate', $td).html('<span class="icon icon-close"></span><span>' + t('settings', 'Disable') + '</span>');
		} else {
			$('.action-togglestate', $td).html('<span class="icon icon-add"></span><span>' + t('settings', 'Enable') + '</span>');
		}
		$tr.addClass('active');
	});

	$(document).on('mouseup', function (event) {
		if (!$(event.target).closest('.toggleUserActions').length) {
			$('#userlist tr.active').removeClass('active');
			$('#userlist .popovermenu.open').removeClass('open');
		}
	});

	$userListBody.on('click', '.action-togglestate', function (event) {
		event.stopPropagation();
		var $td = $(this).closest('td');
		var $tr = $td.closest('tr');
		var uid = UserList.getUID($td);
		var setEnabled = UserList.getUserEnabled($td) ? 0 : 1;
		$.post(
			OC.generateUrl('/settings/users/{id}/setEnabled', {id: uid}),
			{username: uid, enabled: setEnabled},
			function (result) {
				if (result && result.status === 'success') {
					var count = GroupList.getUserCount(GroupList.getGroupLI('_disabledUsers'));
					$tr.remove();
					if (result.data.enabled == 1) {
						$tr.data('userEnabled', true);
						GroupList.setUserCount(GroupList.getGroupLI('_disabledUsers'), count - 1);
					} else {
						$tr.data('userEnabled', false);
						GroupList.setUserCount(GroupList.getGroupLI('_disabledUsers'), count + 1);
					}
				} else {
					OC.dialogs.alert(result.data.message, t('settings', 'Error while changing status of {user}', {user: uid}));
				}
			}
		).fail(function (result) {
			var message = 'Unknown error';
			if (result.responseJSON &&
				result.responseJSON.data &&
				result.responseJSON.data.message) {
				message = result.responseJSON.data.message;
			}
			OC.dialogs.alert(message, t('settings', 'Error while changing status of {user}', {user: uid}));
		});
	});

	// init the quota field select box after it is shown the first time
	$('#app-settings').one('show', function () {
		$(this).find('#default_quota').singleSelect().on('change', UserList.onQuotaSelect);
	});

	$('#newuser input').click(function () {
		// empty the container also here to avoid visual delay
		$emptyContainer.hide();
		OC.Search = new OCA.Search($('#searchbox'), $('#searchresults'));
		OC.Search.clear();
	});

	UserList._updateGroupListLabel($('#newuser .groups'), []);
	var _submitNewUserForm = function (event) {
		event.preventDefault();
		if (OC.PasswordConfirmation.requiresPasswordConfirmation()) {
			OC.PasswordConfirmation.requirePasswordConfirmation(function () {
				_submitNewUserForm(event);
			});
			return;
		}

		var username = $('#newusername').val();
		var password = $('#newuserpassword').val();
		var email = $('#newemail').val();
		if ($.trim(username) === '') {
			OC.Notification.showTemporary(t('settings', 'Error creating user: {message}', {
				message: t('settings', 'A valid username must be provided')
			}));
			return false;
		}
		if ($.trim(password) === '' && !$('#CheckboxMailOnUserCreate').is(':checked')) {
			OC.Notification.showTemporary(t('settings', 'Error creating user: {message}', {
				message: t('settings', 'A valid password must be provided')
			}));
			return false;
		}
		if (!$('#CheckboxMailOnUserCreate').is(':checked')) {
			email = '';
		}
		if ($('#CheckboxMailOnUserCreate').is(':checked') && $.trim(email) === '') {
			OC.Notification.showTemporary(t('settings', 'Error creating user: {message}', {
				message: t('settings', 'A valid email must be provided')
			}));
			return false;
		}

		var promise;
		if (UserDeleteHandler) {
			promise = UserDeleteHandler.deleteEntry();
		} else {
			promise = $.Deferred().resolve().promise();
		}

		promise.then(function () {
			var groups = $('#newuser .groups').data('groups') || [];
			$.post(
				OC.generateUrl('/settings/users/users'),
				{
					username: username,
					password: password,
					groups: groups,
					email: email
				},
				function (result) {
					if (result.groups) {
						for (var i in result.groups) {
							var gid = result.groups[i];
							if (UserList.availableGroups.indexOf(gid) === -1) {
								UserList.availableGroups.push(gid);
							}
							var $li = GroupList.getGroupLI(gid);
							var userCount = GroupList.getUserCount($li);
							GroupList.setUserCount($li, userCount + 1);
						}
					}
					if (!UserList.has(username)) {
						UserList.add(result);
						UserList.doSort();
					}
					$('#newusername').focus();
					GroupList.incEveryoneCount();
				}).fail(function (result) {
				OC.Notification.showTemporary(t('settings', 'Error creating user: {message}', {
					message: result.responseJSON.message
				}, undefined, {escape: false}));
			}).success(function () {
				$('#newuser').get(0).reset();
			});
		});
	};
	$('#newuser').submit(_submitNewUserForm);

	if ($('#CheckboxStorageLocation').is(':checked')) {
		$("#userlist .storageLocation").show();
	}
	// Option to display/hide the "Storage location" column
	$('#CheckboxStorageLocation').click(function () {
		if ($('#CheckboxStorageLocation').is(':checked')) {
			$("#userlist .storageLocation").show();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_show_storage_location', 'true');
			}
		} else {
			$("#userlist .storageLocation").hide();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_show_storage_location', 'false');
			}
		}
	});

	if ($('#CheckboxLastLogin').is(':checked')) {
		$("#userlist .lastLogin").show();
	}
	// Option to display/hide the "Last Login" column
	$('#CheckboxLastLogin').click(function () {
		if ($('#CheckboxLastLogin').is(':checked')) {
			$("#userlist .lastLogin").show();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_show_last_login', 'true');
			}
		} else {
			$("#userlist .lastLogin").hide();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_show_last_login', 'false');
			}
		}
	});

	if ($('#CheckboxEmailAddress').is(':checked')) {
		$("#userlist .mailAddress").show();
	}
	// Option to display/hide the "Mail Address" column
	$('#CheckboxEmailAddress').click(function () {
		if ($('#CheckboxEmailAddress').is(':checked')) {
			$("#userlist .mailAddress").show();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_show_email', 'true');
			}
		} else {
			$("#userlist .mailAddress").hide();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_show_email', 'false');
			}
		}
	});

	if ($('#CheckboxUserBackend').is(':checked')) {
		$("#userlist .userBackend").show();
	}
	// Option to display/hide the "User Backend" column
	$('#CheckboxUserBackend').click(function () {
		if ($('#CheckboxUserBackend').is(':checked')) {
			$("#userlist .userBackend").show();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_show_backend', 'true');
			}
		} else {
			$("#userlist .userBackend").hide();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_show_backend', 'false');
			}
		}
	});

	if ($('#CheckboxMailOnUserCreate').is(':checked')) {
		$("#newemail").show();
	}
	// Option to display/hide the "E-Mail" input field
	$('#CheckboxMailOnUserCreate').click(function () {
		if ($('#CheckboxMailOnUserCreate').is(':checked')) {
			$("#newemail").show();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_send_email', 'true');
			}
		} else {
			$("#newemail").hide();
			if (OC.isUserAdmin()) {
				OCP.AppConfig.setValue('core', 'umgmt_send_email', 'false');
			}
		}
	});

	// calculate initial limit of users to load
	var initialUserCountLimit = UserList.initialUsersToLoad,
		containerHeight = $('#app-content').height();
	if (containerHeight > 40) {
		initialUserCountLimit = Math.floor(containerHeight / 40);
		if (initialUserCountLimit < UserList.initialUsersToLoad) {
			initialUserCountLimit = UserList.initialUsersToLoad;
		}
	}
	//realign initialUserCountLimit with usersToLoad as a safeguard
	while ((initialUserCountLimit % UserList.usersToLoad) !== 0) {
		// must be a multiple of this, otherwise LDAP freaks out.
		// FIXME: solve this in LDAP backend in  8.1
		initialUserCountLimit = initialUserCountLimit + 1;
	}

	// trigger loading of users on startup
	UserList.update(UserList.currentGid, initialUserCountLimit);

	_.defer(function () {
		$('#app-content').trigger($.Event('apprendered'));
	});

});