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	diff --git a/plugins/kolab_notes/kolab_notes.php b/plugins/kolab_notes/kolab_notes.php
	index b472d2a4..6471de1f 100644
	--- a/plugins/kolab_notes/kolab_notes.php
	+++ b/plugins/kolab_notes/kolab_notes.php
	@@ -1,1176 +1,1176 @@
	<?php

	/**
	* Kolab notes module
	*
	* Adds simple notes management features to the web client
	*
	* @version @package_version@
	* @author Thomas Bruederli <bruederli@kolabsys.com>
	*
	* Copyright (C) 2014, 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 kolab_notes extends rcube_plugin
	{
	public $task = '?(?!login\|logout).*';
	public $allowed_prefs = array('kolab_notes_sort_col');
	public $rc;

	private $ui;
	private $lists;
	private $folders;
	private $cache = array();
	private $message_notes = array();

	/**
	* Required startup method of a Roundcube plugin
	*/
	public function init()
	{
	$this->require_plugin('libkolab');

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

	$this->register_task('notes');

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

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

	/**
	* Startup hook
	*/
	public function startup($args)
	{
	// the notes module can be enabled/disabled by the kolab_auth plugin
	- if ($this->rc->config->get('notes_disabled', false) \|\| !$this->rc->config->get('notes_enabled', true)) {
	+ if ($this->rc->config->get('kolab_notes_disabled', false) \|\| !$this->rc->config->get('kolab_notes_enabled', true)) {
	return;
	}

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

	if ($args['task'] == 'notes') {
	$this->add_hook('storage_init', array($this, 'storage_init'));

	// register task actions
	$this->register_action('index', array($this, 'notes_view'));
	$this->register_action('fetch', array($this, 'notes_fetch'));
	$this->register_action('get', array($this, 'note_record'));
	$this->register_action('action', array($this, 'note_action'));
	$this->register_action('list', array($this, 'list_action'));
	$this->register_action('dialog-ui', array($this, 'dialog_view'));
	}
	else if ($args['task'] == 'mail') {
	$this->add_hook('storage_init', array($this, 'storage_init'));
	$this->add_hook('message_compose', array($this, 'mail_message_compose'));

	if (in_array($args['action'], array('show', 'preview', 'print'))) {
	$this->add_hook('message_load', array($this, 'mail_message_load'));
	$this->add_hook('template_object_messagebody', array($this, 'mail_messagebody_html'));
	}

	// add 'Append note' item to message menu
	if ($this->api->output->type == 'html' && $_REQUEST['_rel'] != 'note') {
	$this->api->add_content(html::tag('li', null,
	$this->api->output->button(array(
	'command' => 'append-kolab-note',
	'label' => 'kolab_notes.appendnote',
	'type' => 'link',
	'classact' => 'icon appendnote active',
	'class' => 'icon appendnote',
	'innerclass' => 'icon note',
	))),
	'messagemenu');

	$this->api->output->add_label('kolab_notes.appendnote', 'kolab_notes.editnote', 'kolab_notes.deletenotesconfirm', 'kolab_notes.entertitle', 'save', 'delete', 'cancel', 'close');
	$this->include_script('notes_mail.js');
	}
	}

	if (!$this->rc->output->ajax_call && (!$this->rc->output->env['framed'] \|\| in_array($args['action'], array('folder-acl','dialog-ui')))) {
	$this->load_ui();
	}

	// notes use fully encoded identifiers
	kolab_storage::$encode_ids = true;
	}

	/**
	* Hook into IMAP FETCH HEADER.FIELDS command and request MESSAGE-ID
	*/
	public function storage_init($p)
	{
	$p['fetch_headers'] = trim($p['fetch_headers'] . ' MESSAGE-ID');
	return $p;
	}

	/**
	* Load and initialize UI class
	*/
	private function load_ui()
	{
	require_once($this->home . '/kolab_notes_ui.php');
	$this->ui = new kolab_notes_ui($this);
	$this->ui->init();
	}

	/**
	* Read available calendars for the current user and store them internally
	*/
	private function _read_lists($force = false)
	{
	// already read sources
	if (isset($this->lists) && !$force)
	return $this->lists;

	// get all folders that have type "task"
	$folders = kolab_storage::sort_folders(kolab_storage::get_folders('note'));
	$this->lists = $this->folders = array();

	// find default folder
	$default_index = 0;
	foreach ($folders as $i => $folder) {
	if ($folder->default)
	$default_index = $i;
	}

	// put default folder on top of the list
	if ($default_index > 0) {
	$default_folder = $folders[$default_index];
	unset($folders[$default_index]);
	array_unshift($folders, $default_folder);
	}

	foreach ($folders as $folder) {
	$item = $this->folder_props($folder);
	$this->lists[$item['id']] = $item;
	$this->folders[$item['id']] = $folder;
	$this->folders[$folder->name] = $folder;
	}
	}

	/**
	* Get a list of available folders from this source
	*/
	public function get_lists(&$tree = null)
	{
	$this->_read_lists();

	// attempt to create a default folder for this user
	if (empty($this->lists)) {
	$folder = array('name' => 'Notes', 'type' => 'note', 'default' => true, 'subscribed' => true);
	if (kolab_storage::folder_update($folder)) {
	$this->_read_lists(true);
	}
	}

	$folders = array();
	foreach ($this->lists as $id => $list) {
	if (!empty($this->folders[$id])) {
	$folders[] = $this->folders[$id];
	}
	}

	// include virtual folders for a full folder tree
	if (!is_null($tree)) {
	$folders = kolab_storage::folder_hierarchy($folders, $tree);
	}

	$delim = $this->rc->get_storage()->get_hierarchy_delimiter();

	$lists = array();
	foreach ($folders as $folder) {
	$list_id = $folder->id;
	$imap_path = explode($delim, $folder->name);

	// find parent
	do {
	array_pop($imap_path);
	$parent_id = kolab_storage::folder_id(join($delim, $imap_path));
	}
	while (count($imap_path) > 1 && !$this->folders[$parent_id]);

	// restore "real" parent ID
	if ($parent_id && !$this->folders[$parent_id]) {
	$parent_id = kolab_storage::folder_id($folder->get_parent());
	}

	$fullname = $folder->get_name();
	$listname = $folder->get_foldername();

	// special handling for virtual folders
	if ($folder instanceof kolab_storage_folder_user) {
	$lists[$list_id] = array(
	'id' => $list_id,
	'name' => $fullname,
	'listname' => $listname,
	'title' => $folder->get_title(),
	'virtual' => true,
	'editable' => false,
	'group' => 'other virtual',
	'class' => 'user',
	'parent' => $parent_id,
	);
	}
	else if ($folder->virtual) {
	$lists[$list_id] = array(
	'id' => $list_id,
	'name' => kolab_storage::object_name($fullname),
	'listname' => $listname,
	'virtual' => true,
	'editable' => false,
	'group' => $folder->get_namespace(),
	'parent' => $parent_id,
	);
	}
	else {
	if (!$this->lists[$list_id]) {
	$this->lists[$list_id] = $this->folder_props($folder);
	$this->folders[$list_id] = $folder;
	}
	$this->lists[$list_id]['parent'] = $parent_id;
	$lists[$list_id] = $this->lists[$list_id];
	}
	}

	return $lists;
	}

	/**
	* Search for shared or otherwise not listed folders the user has access
	*
	* @param string Search string
	* @param string Section/source to search
	* @return array List of notes folders
	*/
	protected function search_lists($query, $source)
	{
	if (!kolab_storage::setup()) {
	return array();
	}

	$this->search_more_results = false;
	$this->lists = $this->folders = array();

	// find unsubscribed IMAP folders that have "event" type
	if ($source == 'folders') {
	foreach ((array)kolab_storage::search_folders('note', $query, array('other')) as $folder) {
	$this->folders[$folder->id] = $folder;
	$this->lists[$folder->id] = $this->folder_props($folder);
	}
	}
	// search other user's namespace via LDAP
	else if ($source == 'users') {
	$limit = $this->rc->config->get('autocomplete_max', 15) * 2; // we have slightly more space, so display twice the number
	foreach (kolab_storage::search_users($query, 0, array(), $limit * 10) as $user) {
	$folders = array();
	// search for note folders shared by this user
	foreach (kolab_storage::list_user_folders($user, 'note', false) as $foldername) {
	$folders[] = new kolab_storage_folder($foldername, 'note');
	}

	if (count($folders)) {
	$userfolder = new kolab_storage_folder_user($user['kolabtargetfolder'], '', $user);
	$this->folders[$userfolder->id] = $userfolder;
	$this->lists[$userfolder->id] = $this->folder_props($userfolder);

	foreach ($folders as $folder) {
	$this->folders[$folder->id] = $folder;
	$this->lists[$folder->id] = $this->folder_props($folder);
	$count++;
	}
	}

	if ($count >= $limit) {
	$this->search_more_results = true;
	break;
	}
	}

	}

	return $this->get_lists();
	}

	/**
	* Derive list properties from the given kolab_storage_folder object
	*/
	protected function folder_props($folder)
	{
	if ($folder->get_namespace() == 'personal') {
	$norename = false;
	$readonly = false;
	$alarms = true;
	}
	else {
	$alarms = false;
	$readonly = true;
	if (($rights = $folder->get_myrights()) && !PEAR::isError($rights)) {
	if (strpos($rights, 'i') !== false)
	$readonly = false;
	}
	$info = $folder->get_folder_info();
	$norename = $readonly \|\| $info['norename'] \|\| $info['protected'];
	}

	$list_id = $folder->id;
	return array(
	'id' => $list_id,
	'name' => $folder->get_name(),
	'listname' => $folder->get_foldername(),
	'editname' => $folder->get_foldername(),
	'editable' => !$readonly,
	'norename' => $norename,
	'parentfolder' => $folder->get_parent(),
	'subscribed' => (bool)$folder->is_subscribed(),
	'default' => $folder->default,
	'group' => $folder->default ? 'default' : $folder->get_namespace(),
	'class' => trim($folder->get_namespace() . ($folder->default ? ' default' : '')),
	);
	}

	/**
	* Get the kolab_calendar instance for the given calendar ID
	*
	* @param string List identifier (encoded imap folder name)
	* @return object kolab_storage_folder Object nor null if list doesn't exist
	*/
	public function get_folder($id)
	{
	// create list and folder instance if necesary
	if (!$this->lists[$id]) {
	$folder = kolab_storage::get_folder(kolab_storage::id_decode($id));
	if ($folder->type) {
	$this->folders[$id] = $folder;
	$this->lists[$id] = $this->folder_props($folder);
	}
	}

	return $this->folders[$id];
	}

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

	/**
	* Render main view of the tasklist task
	*/
	public function notes_view()
	{
	$this->ui->init();
	$this->ui->init_templates();
	$this->rc->output->set_pagetitle($this->gettext('navtitle'));
	$this->rc->output->send('kolab_notes.notes');
	}

	/**
	* Deliver a rediced UI for inline (dialog)
	*/
	public function dialog_view()
	{
	// resolve message reference
	if ($msgref = rcube_utils::get_input_value('_msg', rcube_utils::INPUT_GPC, true)) {
	$storage = $this->rc->get_storage();
	list($uid, $folder) = explode('-', $msgref, 2);
	if ($message = $storage->get_message_headers($msgref)) {
	$this->rc->output->set_env('kolab_notes_template', array(
	'_from_mail' => true,
	'title' => $message->get('subject'),
	'links' => array(kolab_storage_config::get_message_reference(
	kolab_storage_config::get_message_uri($message, $folder),
	'note'
	)),
	));
	}
	}

	$this->ui->init_templates();
	$this->rc->output->send('kolab_notes.dialogview');
	}

	/**
	* Handler to retrieve note records for the given list and/or search query
	*/
	public function notes_fetch()
	{
	$search = rcube_utils::get_input_value('_q', rcube_utils::INPUT_GPC, true);
	$list = rcube_utils::get_input_value('_list', rcube_utils::INPUT_GPC);

	$data = $this->notes_data($this->list_notes($list, $search), $tags);

	$this->rc->output->command('plugin.data_ready', array(
	'list' => $list,
	'search' => $search,
	'data' => $data,
	'tags' => array_values($tags)
	));
	}

	/**
	* Convert the given note records for delivery to the client
	*/
	protected function notes_data($records, &$tags)
	{
	$config = kolab_storage_config::get_instance();
	$tags = $config->apply_tags($records);

	foreach ($records as $i => $rec) {
	unset($records[$i]['description']);
	$this->_client_encode($records[$i]);
	}

	return $records;
	}

	/**
	* Read note records for the given list from the storage backend
	*/
	protected function list_notes($list_id, $search = null)
	{
	$results = array();

	// query Kolab storage
	$query = array();

	// full text search (only works with cache enabled)
	if (strlen($search)) {
	$words = array_filter(rcube_utils::normalize_string(mb_strtolower($search), true));
	foreach ($words as $word) {
	if (strlen($word) > 2) { // only words > 3 chars are stored in DB
	$query[] = array('words', '~', $word);
	}
	}
	}

	$this->_read_lists();
	if ($folder = $this->get_folder($list_id)) {
	foreach ($folder->select($query) as $record) {
	// post-filter search results
	if (strlen($search)) {
	$matches = 0;
	$contents = mb_strtolower(
	$record['title'] .
	($this->is_html($record) ? strip_tags($record['description']) : $record['description'])
	);
	foreach ($words as $word) {
	if (mb_strpos($contents, $word) !== false) {
	$matches++;
	}
	}

	// skip records not matching all search words
	if ($matches < count($words)) {
	continue;
	}
	}
	$record['list'] = $list_id;
	$results[] = $record;
	}
	}

	return $results;
	}

	/**
	* Handler for delivering a full note record to the client
	*/
	public function note_record()
	{
	$data = $this->get_note(array(
	'uid' => rcube_utils::get_input_value('_id', rcube_utils::INPUT_GPC),
	'list' => rcube_utils::get_input_value('_list', rcube_utils::INPUT_GPC),
	));

	// encode for client use
	if (is_array($data)) {
	$this->_client_encode($data, true);
	}

	$this->rc->output->command('plugin.render_note', $data);
	}

	/**
	* Get the full note record identified by the given UID + Lolder identifier
	*/
	public function get_note($note)
	{
	if (is_array($note)) {
	$uid = $note['uid'] ?: $note['id'];
	$list_id = $note['list'];
	}
	else {
	$uid = $note;
	}

	// deliver from in-memory cache
	$key = $list_id . ':' . $uid;
	if ($this->cache[$key]) {
	return $this->cache[$key];
	}

	$result = false;

	$this->_read_lists();
	if ($list_id) {
	if ($folder = $this->get_folder($list_id)) {
	$result = $folder->get_object($uid);
	}
	}
	// iterate over all calendar folders and search for the event ID
	else {
	foreach ($this->folders as $list_id => $folder) {
	if ($result = $folder->get_object($uid)) {
	$result['list'] = $list_id;
	break;
	}
	}
	}

	if ($result) {
	// get note tags
	$result['tags'] = $this->get_tags($result['uid']);
	}

	return $result;
	}

	/**
	* Helper method to encode the given note record for use in the client
	*/
	private function _client_encode(&$note, $resolve = false)
	{
	foreach ($note as $key => $prop) {
	if ($key[0] == '_' \|\| $key == 'x-custom') {
	unset($note[$key]);
	}
	}

	foreach (array('created','changed') as $key) {
	if (is_object($note[$key]) && $note[$key] instanceof DateTime) {
	$note[$key.'_'] = $note[$key]->format('U');
	$note[$key] = $this->rc->format_date($note[$key]);
	}
	}

	// clean HTML contents
	if (!empty($note['description']) && $this->is_html($note)) {
	$note['html'] = $this->_wash_html($note['description']);
	}

	// resolve message links
	$note['links'] = array_map(function($link) {
	return kolab_storage_config::get_message_reference($link, 'note') ?: array('uri' => $link);
	}, $this->get_links($note['uid']));

	return $note;
	}

	/**
	* Handler for client-initiated actions on a single note record
	*/
	public function note_action()
	{
	$action = rcube_utils::get_input_value('_do', rcube_utils::INPUT_POST);
	$note = rcube_utils::get_input_value('_data', rcube_utils::INPUT_POST, true);

	$success = false;
	switch ($action) {
	case 'new':
	$temp_id = $rec['tempid'];

	case 'edit':
	if ($success = $this->save_note($note)) {
	$refresh = $this->get_note($note);
	$refresh['tempid'] = $temp_id;
	}
	break;

	case 'move':
	$uids = explode(',', $note['uid']);
	foreach ($uids as $uid) {
	$note['uid'] = $uid;
	if (!($success = $this->move_note($note, $note['to']))) {
	$refresh = $this->get_note($note);
	break;
	}
	}
	break;

	case 'delete':
	$uids = explode(',', $note['uid']);
	foreach ($uids as $uid) {
	$note['uid'] = $uid;
	if (!($success = $this->delete_note($note))) {
	$refresh = $this->get_note($note);
	break;
	}
	}
	break;
	}

	// show confirmation/error message
	if ($success) {
	$this->rc->output->show_message('successfullysaved', 'confirmation');
	}
	else {
	$this->rc->output->show_message('errorsaving', 'error');
	}

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

	if ($refresh) {
	$this->rc->output->command('plugin.update_note', $this->_client_encode($refresh));
	}
	}

	/**
	* Update an note record with the given data
	*
	* @param array Hash array with note properties (id, list)
	* @return boolean True on success, False on error
	*/
	private function save_note(&$note)
	{
	$this->_read_lists();

	$list_id = $note['list'];
	if (!$list_id \|\| !($folder = $this->get_folder($list_id)))
	return false;

	// moved from another folder
	if ($note['_fromlist'] && ($fromfolder = $this->get_folder($note['_fromlist']))) {
	if (!$fromfolder->move($note['uid'], $folder->name))
	return false;

	unset($note['_fromlist']);
	}

	// load previous version of this record to merge
	if ($note['uid']) {
	$old = $folder->get_object($note['uid']);
	if (!$old \|\| PEAR::isError($old))
	return false;

	// merge existing properties if the update isn't complete
	if (!isset($note['title']) \|\| !isset($note['description']))
	$note += $old;
	}

	// generate new note object from input
	$object = $this->_write_preprocess($note, $old);

	// email links and tags are handled separately
	$links = $object['links'];
	$tags = $object['tags'];

	unset($object['links']);
	unset($object['tags']);

	$saved = $folder->save($object, 'note', $note['uid']);

	if (!$saved) {
	raise_error(array(
	'code' => 600, 'type' => 'php',
	'file' => __FILE__, 'line' => __LINE__,
	'message' => "Error saving note object to Kolab server"),
	true, false);
	$saved = false;
	}
	else {
	// save links in configuration.relation object
	$this->save_links($object['uid'], $links);
	// save tags in configuration.relation object
	$this->save_tags($object['uid'], $tags);

	$note = $object;
	$note['list'] = $list_id;
	$note['tags'] = (array) $tags;

	// cache this in memory for later read
	$key = $list_id . ':' . $note['uid'];
	$this->cache[$key] = $note;
	}

	return $saved;
	}

	/**
	* Move the given note to another folder
	*/
	function move_note($note, $list_id)
	{
	$this->_read_lists();

	$tofolder = $this->get_folder($list_id);
	$fromfolder = $this->get_folder($note['list']);

	if ($fromfolder && $tofolder) {
	return $fromfolder->move($note['uid'], $tofolder->name);
	}

	return false;
	}

	/**
	* Remove a single note record from the backend
	*
	* @param array Hash array with note properties (id, list)
	* @param boolean Remove record irreversible (mark as deleted otherwise)
	* @return boolean True on success, False on error
	*/
	public function delete_note($note, $force = true)
	{
	$this->_read_lists();

	$list_id = $note['list'];
	if (!$list_id \|\| !($folder = $this->get_folder($list_id))) {
	return false;
	}

	$status = $folder->delete($note['uid'], $force);

	if ($status) {
	$this->save_links($note['uid'], null);
	$this->save_tags($note['uid'], null);
	}

	return $status;
	}

	/**
	* Handler for client requests to list (aka folder) actions
	*/
	public function list_action()
	{
	$action = rcube_utils::get_input_value('_do', rcube_utils::INPUT_GPC);
	$list = rcube_utils::get_input_value('_list', rcube_utils::INPUT_GPC, true);
	$success = $update_cmd = false;

	if (empty($action)) {
	$action = rcube_utils::get_input_value('action', rcube_utils::INPUT_GPC);
	}

	switch ($action) {
	case 'form-new':
	case 'form-edit':
	$this->_read_lists();
	echo $this->ui->list_editform($action, $this->lists[$list['id']], $this->folders[$list['id']]);
	exit;

	case 'new':
	$list['type'] = 'note';
	$list['subscribed'] = true;
	$folder = kolab_storage::folder_update($list);

	if ($folder === false) {
	$save_error = $this->gettext(kolab_storage::$last_error);
	}
	else {
	$success = true;
	$update_cmd = 'plugin.update_list';
	$list['id'] = kolab_storage::folder_id($folder);
	$list['_reload'] = true;
	}
	break;

	case 'edit':
	$this->_read_lists();
	$oldparent = $this->lists[$list['id']]['parentfolder'];
	$newfolder = kolab_storage::folder_update($list);

	if ($newfolder === false) {
	$save_error = $this->gettext(kolab_storage::$last_error);
	}
	else {
	$success = true;
	$update_cmd = 'plugin.update_list';
	$list['newid'] = kolab_storage::folder_id($newfolder);
	$list['_reload'] = $list['parent'] != $oldparent;

	// compose the new display name
	$delim = $this->rc->get_storage()->get_hierarchy_delimiter();
	$path_imap = explode($delim, $newfolder);
	$list['name'] = kolab_storage::object_name($newfolder);
	$list['editname'] = rcube_charset::convert(array_pop($path_imap), 'UTF7-IMAP');
	$list['listname'] = str_repeat('   ', count($path_imap)) . '» ' . $list['editname'];
	}
	break;

	case 'delete':
	$this->_read_lists();
	$folder = $this->get_folder($list['id']);
	if ($folder && kolab_storage::folder_delete($folder->name)) {
	$success = true;
	$update_cmd = 'plugin.destroy_list';
	}
	else {
	$save_error = $this->gettext(kolab_storage::$last_error);
	}
	break;

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

	// let the UI generate HTML and CSS representation for this calendar
	$html = $this->ui->folder_list_item($id, $prop, $jsenv, true);
	$prop += (array)$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, rcube_utils::get_input_value('_reqid', rcube_utils::INPUT_GPC));
	return;

	case 'subscribe':
	$success = false;
	if ($list['id'] && ($folder = $this->get_folder($list['id']))) {
	if (isset($list['permanent']))
	$success \|= $folder->subscribe(intval($list['permanent']));
	if (isset($list['active']))
	$success \|= $folder->activate(intval($list['active']));

	// apply to child folders, too
	if ($list['recursive']) {
	foreach ((array)kolab_storage::list_folders($folder->name, '*', 'node') as $subfolder) {
	if (isset($list['permanent']))
	($list['permanent'] ? kolab_storage::folder_subscribe($subfolder) : kolab_storage::folder_unsubscribe($subfolder));
	if (isset($list['active']))
	($list['active'] ? kolab_storage::folder_activate($subfolder) : kolab_storage::folder_deactivate($subfolder));
	}
	}
	}
	break;
	}

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

	if ($success) {
	$this->rc->output->show_message('successfullysaved', 'confirmation');

	if ($update_cmd) {
	$this->rc->output->command($update_cmd, $list);
	}
	}
	else {
	$error_msg = $this->gettext('errorsaving') . ($save_error ? ': ' . $save_error :'');
	$this->rc->output->show_message($error_msg, 'error');
	}
	}

	/**
	* Hook to add note attachments to message compose if the according parameter is present.
	* This completes the 'send note by mail' feature.
	*/
	public function mail_message_compose($args)
	{
	if (!empty($args['param']['with_notes'])) {
	$uids = explode(',', $args['param']['with_notes']);
	$list = $args['param']['notes_list'];

	foreach ($uids as $uid) {
	if ($note = $this->get_note(array('uid' => $uid, 'list' => $list))) {
	$args['attachments'][] = array(
	'name' => abbreviate_string($note['title'], 50, ''),
	'mimetype' => 'message/rfc822',
	'data' => $this->note2message($note),
	);

	if (empty($args['param']['subject'])) {
	$args['param']['subject'] = $note['title'];
	}
	}
	}

	unset($args['param']['with_notes'], $args['param']['notes_list']);
	}

	return $args;
	}

	/**
	* Lookup backend storage and find notes associated with the given message
	*/
	public function mail_message_load($p)
	{
	if (!$p['object']->headers->others['x-kolab-type']) {
	$this->message_notes = $this->get_message_notes($p['object']->headers, $p['object']->folder);
	}
	}

	/**
	* Handler for 'messagebody_html' hook
	*/
	public function mail_messagebody_html($args)
	{
	$html = '';
	foreach ($this->message_notes as $note) {
	$html .= html::a(array(
	'href' => $this->rc->url(array('task' => 'notes', '_list' => $note['list'], '_id' => $note['uid'])),
	'class' => 'kolabnotesref',
	'rel' => $note['uid'] . '@' . $note['list'],
	'target' => '_blank',
	), Q($note['title']));
	}

	// prepend note links to message body
	if ($html) {
	$this->load_ui();
	$args['content'] = html::div('kolabmessagenotes', $html) . $args['content'];
	}

	return $args;
	}

	/**
	* Determine whether the given note is HTML formatted
	*/
	private function is_html($note)
	{
	// check for opening and closing <html> or <body> tags
	return (preg_match('/<(html\|body)(\s+[a-z]\|>)/', $note['description'], $m) && strpos($note['description'], '</'.$m[1].'>') > 0);
	}

	/**
	* Build an RFC 822 message from the given note
	*/
	private function note2message($note)
	{
	$message = new Mail_mime("\r\n");

	$message->setParam('text_encoding', '8bit');
	$message->setParam('html_encoding', 'quoted-printable');
	$message->setParam('head_encoding', 'quoted-printable');
	$message->setParam('head_charset', RCUBE_CHARSET);
	$message->setParam('html_charset', RCUBE_CHARSET);
	$message->setParam('text_charset', RCUBE_CHARSET);

	$message->headers(array(
	'Subject' => $note['title'],
	'Date' => $note['changed']->format('r'),
	));

	if ($this->is_html($note)) {
	$message->setHTMLBody($note['description']);

	// add a plain text version of the note content as an alternative part.
	$h2t = new rcube_html2text($note['description'], false, true, 0, RCUBE_CHARSET);
	$plain_part = rcube_mime::wordwrap($h2t->get_text(), $this->rc->config->get('line_length', 72), "\r\n", false, RCUBE_CHARSET);
	$plain_part = trim(wordwrap($plain_part, 998, "\r\n", true));

	// make sure all line endings are CRLF
	$plain_part = preg_replace('/\r?\n/', "\r\n", $plain_part);

	$message->setTXTBody($plain_part);
	}
	else {
	$message->setTXTBody($note['description']);
	}

	return $message->getMessage();
	}

	private function save_links($uid, $links)
	{
	if (empty($links)) {
	$links = array();
	}
	$config = kolab_storage_config::get_instance();
	$remove = array_diff($config->get_object_links($uid), $links);
	return $config->save_object_links($uid, $links, $remove);
	}

	/**
	* Find messages assigned to specified note
	*/
	private function get_links($uid)
	{
	$config = kolab_storage_config::get_instance();
	return $config->get_object_links($uid);
	}

	/**
	* Get note tags
	*/
	private function get_tags($uid)
	{
	$config = kolab_storage_config::get_instance();
	$tags = $config->get_tags($uid);
	$tags = array_map(function($v) { return $v['name']; }, $tags);

	return $tags;
	}

	/**
	* Find notes assigned to specified message
	*/
	private function get_message_notes($message, $folder)
	{
	$config = kolab_storage_config::get_instance();
	$result = $config->get_message_relations($message, $folder, 'note');

	foreach ($result as $idx => $note) {
	$result[$idx]['list'] = kolab_storage::folder_id($note['_mailbox']);
	}

	return $result;
	}

	/**
	* Update note tags
	*/
	private function save_tags($uid, $tags)
	{
	$config = kolab_storage_config::get_instance();
	$config->save_tags($uid, $tags);
	}

	/**
	* Process the given note data (submitted by the client) before saving it
	*/
	private function _write_preprocess($note, $old = array())
	{
	$object = $note;

	// TODO: handle attachments

	// convert link references into simple URIs
	if (array_key_exists('links', $note)) {
	$object['links'] = array_map(function($link){ return is_array($link) ? $link['uri'] : strval($link); }, $note['links']);
	}
	else {
	$object['links'] = $old['links'];
	}

	// clean up HTML content
	$object['description'] = $this->_wash_html($note['description']);
	$is_html = true;

	// try to be smart and convert to plain-text if no real formatting is detected
	if (preg_match('!<body><(?:p\|pre)>(.*)</(?:p\|pre)></body>!Uims', $object['description'], $m)) {
	if (!preg_match('!<(a\|b\|i\|strong\|em\|p\|span\|div\|pre\|li)(\s+[a-z]\|>)!im', $m[1], $n) \|\| !strpos($m[1], '</'.$n[1].'>')) {
	// $converter = new rcube_html2text($m[1], false, true, 0);
	// $object['description'] = rtrim($converter->get_text());
	$object['description'] = html_entity_decode(preg_replace('!<br(\s+/)>!', "\n", $m[1]));
	$is_html = false;
	}
	}

	// Add proper HTML header, otherwise Kontact renders it as plain text
	if ($is_html) {
	$object['description'] = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">'."\n" .
	str_replace('<head>', '<head><meta name="qrichtext" content="1" />', $object['description']);
	}

	// copy meta data (starting with _) from old object
	foreach ((array)$old as $key => $val) {
	if (!isset($object[$key]) && $key[0] == '_')
	$object[$key] = $val;
	}

	// make list of categories unique
	if (is_array($object['tags'])) {
	$object['tags'] = array_unique(array_filter($object['tags']));
	}

	unset($object['list'], $object['tempid'], $object['created'], $object['changed'], $object['created_'], $object['changed_']);
	return $object;
	}

	/**
	* Sanity checks/cleanups HTML content
	*/
	private function _wash_html($html)
	{
	// Add header with charset spec., washtml cannot work without that
	$html = '<html><head>'
	. '<meta http-equiv="Content-Type" content="text/html; charset='.RCUBE_CHARSET.'" />'
	. '</head><body>' . $html . '</body></html>';

	// clean HTML with washtml by Frederic Motte
	$wash_opts = array(
	'show_washed' => false,
	'allow_remote' => 1,
	'charset' => RCUBE_CHARSET,
	'html_elements' => array('html', 'head', 'meta', 'body', 'link'),
	'html_attribs' => array('rel', 'type', 'name', 'http-equiv'),
	);

	// initialize HTML washer
	$washer = new rcube_washtml($wash_opts);

	$washer->add_callback('form', array($this, '_washtml_callback'));
	$washer->add_callback('a', array($this, '_washtml_callback'));

	// Remove non-UTF8 characters
	$html = rcube_charset::clean($html);

	$html = $washer->wash($html);

	// remove unwanted comments (produced by washtml)
	$html = preg_replace('/<!--[^>]+-->/', '', $html);

	return $html;
	}

	/**
	* Callback function for washtml cleaning class
	*/
	public function _washtml_callback($tagname, $attrib, $content, $washtml)
	{
	switch ($tagname) {
	case 'form':
	$out = html::div('form', $content);
	break;

	case 'a':
	// strip temporary link tags from plain-text markup
	$attrib = html::parse_attrib_string($attrib);
	if (!empty($attrib['class']) && strpos($attrib['class'], 'x-templink') !== false) {
	// remove link entirely
	if (strpos($attrib['href'], html_entity_decode($content)) !== false) {
	$out = $content;
	break;
	}
	$attrib['class'] = trim(str_replace('x-templink', '', $attrib['class']));
	}
	$out = html::a($attrib, $content);
	break;

	default:
	$out = '';
	}

	return $out;
	}

	}

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