Users page lazy multiselect group dropdowns

Instead of pre-rendering all multiselects with lots of group entries,
the current groups are now displayed as simple labels.
Behind the labels there is a pencil icon like for other fields.
When clicking the pencil icon, the dropdown will be spawned and will
open itself.
Upon closing of the dropdown, the label comes back with the updated
selection and the dropdown is destroyed.

1 files changed, 83 insertions, 78 deletions

diff --git a/settings/js/users/users.js b/settings/js/users/users.js
index 4ce77648826..7922cd9c656 100644
--- a/settings/js/users/users.js
+++ b/settings/js/users/users.js
@@ -59,9 +59,6 @@ var UserList = {
 		var $tr = $userListBody.find('tr:first-child').clone();
 		// this removes just the `display:none` of the template row
 		$tr.removeAttr('style');
-		var subAdminsEl;
-		var subAdminSelect;
-		var groupsSelect;
 
 		/**
 		 * Avatar or placeholder
@@ -88,32 +85,17 @@ var UserList = {
 		$tr.find('td.mailAddress > .action').tooltip({placement: 'top'});
 		$tr.find('td.password > .action').tooltip({placement: 'top'});
 
+
 		/**
 		 * groups and subadmins
 		 */
-		// make them look like the multiselect buttons
-		// until they get time to really get initialized
-		groupsSelect = $('<select multiple="multiple" class="groupsselect multiselect button" data-placehoder="Groups" title="' + t('settings', 'No group') + '"></select>')
-			.data('username', user.name)
-			.data('user-groups', user.groups);
-		if ($tr.find('td.subadmins').length > 0) {
-			subAdminSelect = $('<select multiple="multiple" class="subadminsselect multiselect button" data-placehoder="subadmins" title="' + t('settings', 'No group') + '">')
-				.data('username', user.name)
-				.data('user-groups', user.groups)
-				.data('subadmin', user.subadmin);
-			$tr.find('td.subadmins').empty();
-		}
-		$.each(this.availableGroups, function (i, group) {
-			groupsSelect.append($('<option value="' + escapeHTML(group) + '">' + escapeHTML(group) + '</option>'));
-			if (typeof subAdminSelect !== 'undefined' && group !== 'admin') {
-				subAdminSelect.append($('<option value="' + escapeHTML(group) + '">' + escapeHTML(group) + '</option>'));
-			}
-		});
-		$tr.find('td.groups').empty().append(groupsSelect);
-		subAdminsEl = $tr.find('td.subadmins');
-		if (subAdminsEl.length > 0) {
-			subAdminsEl.append(subAdminSelect);
-		}
+		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'});
 
 		/**
 		 * remove action
@@ -200,10 +182,6 @@ var UserList = {
 		// defer init so the user first sees the list appear more quickly
 		window.setTimeout(function(){
 			$quotaSelect.singleSelect();
-			UserList.applyGroupSelect(groupsSelect);
-			if (subAdminSelect) {
-				UserList.applySubadminSelect(subAdminSelect);
-			}
 		}, 0);
 		return $tr;
 	},
@@ -324,7 +302,7 @@ var UserList = {
 	},
 	markRemove: function(uid) {
 		var $tr = UserList.getRow(uid);
-		var groups = $tr.find('.groups .groupsselect').val();
+		var groups = $tr.find('.groups').data('groups');
 		for(var i in groups) {
 			var gid = groups[i];
 			var $li = GroupList.getGroupLI(gid);
@@ -339,7 +317,7 @@ var UserList = {
 	},
 	undoRemove: function(uid) {
 		var $tr = UserList.getRow(uid);
-		var groups = $tr.find('.groups .groupsselect').val();
+		var groups = $tr.find('.groups').data('groups');
 		for(var i in groups) {
 			var gid = groups[i];
 			var $li = GroupList.getGroupLI(gid);
@@ -440,19 +418,9 @@ var UserList = {
 			});
 	},
 
-	applyGroupSelect: function (element) {
-		var checked = [];
+	applyGroupSelect: function (element, user, checked) {
 		var $element = $(element);
-		var user = UserList.getUID($element);
 
-		if ($element.data('user-groups')) {
-			if (typeof $element.data('user-groups') === 'string') {
-				checked = $element.data('user-groups').split(", ");
-			}
-			else {
-				checked = $element.data('user-groups');
-			}
-		}
 		var checkHandler = null;
 		if(user) { // Only if in a user row, and not the #newusergroups select
 			checkHandler = function (group) {
@@ -492,13 +460,6 @@ var UserList = {
 			};
 		}
 		var addGroup = function (select, group) {
-			$('select[multiple]').each(function (index, element) {
-				$element = $(element);
-				if ($element.find('option').filterAttr('value', group).length === 0 &&
-					select.data('msid') !== $element.data('msid')) {
-					$element.append('<option value="' + escapeHTML(group) + '">' + escapeHTML(group) + '</option>');
-				}
-			});
 			GroupList.addGroup(escapeHTML(group));
 		};
 		var label;
@@ -519,19 +480,8 @@ var UserList = {
 		});
 	},
 
-	applySubadminSelect: function (element) {
-		var checked = [];
+	applySubadminSelect: function (element, user, checked) {
 		var $element = $(element);
-		var user = UserList.getUID($element);
-
-		if ($element.data('subadmin')) {
-			if (typeof $element.data('subadmin') === 'string') {
-				checked = $element.data('subadmin').split(", ");
-			}
-			else {
-				checked = $element.data('subadmin');
-			}
-		}
 		var checkHandler = function (group) {
 			if (group === 'admin') {
 				return false;
@@ -547,15 +497,7 @@ var UserList = {
 			);
 		};
 
-		var addSubAdmin = function (group) {
-			$('select[multiple]').each(function (index, element) {
-				if ($(element).find('option').filterAttr('value', group).length === 0) {
-					$(element).append('<option value="' + escapeHTML(group) + '">' + escapeHTML(group) + '</option>');
-				}
-			});
-		};
 		$element.multiSelect({
-			createCallback: addSubAdmin,
 			createText: null,
 			checked: checked,
 			oncheck: checkHandler,
@@ -613,6 +555,62 @@ var UserList = {
 				}
 			}
 		);
+	},
+
+	/**
+	 * Creates a temporary jquery.multiselect selector on the given group field
+	 */
+	_triggerGroupEdit: function($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') || [];
+
+		$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>')
+		}
+
+		$.each(this.availableGroups, function (i, group) {
+			if (isSubadminSelect && group === 'admin') {
+				// can't become subadmin of "admin" group
+				return;
+			}
+			$groupsSelect.append($('<option value="' + escapeHTML(group) + '">' + escapeHTML(group) + '</option>'));
+		});
+
+		$td.append($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);
 	}
 };
 
@@ -637,13 +635,6 @@ $(document).ready(function () {
 	// TODO: move other init calls inside of initialize
 	UserList.initialize($('#userlist'));
 
-	$('.groupsselect').each(function (index, element) {
-		UserList.applyGroupSelect(element);
-	});
-	$('.subadminsselect').each(function (index, element) {
-		UserList.applySubadminSelect(element);
-	});
-
 	$userListBody.on('click', '.password', function (event) {
 		event.stopPropagation();
 
@@ -787,11 +778,25 @@ $(document).ready(function () {
 			});
 	});
 
+	$('#newuser .groupsListContainer').on('click', function (event) {
+		var $target = $(event.target);
+		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);
+	});
+
 	// 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);
 	});
 
+	UserList._updateGroupListLabel($('#newuser .groups'), []);
 	$('#newuser').submit(function (event) {
 		event.preventDefault();
 		var username = $('#newusername').val();
@@ -827,7 +832,7 @@ $(document).ready(function () {
 		}
 
 		promise.then(function() {
-			var groups = $('#newusergroups').val() || [];
+			var groups = $('#newuser .groups').data('groups') || [];
 			$.post(
 				OC.generateUrl('/settings/users/users'),
 				{