managesieve.js
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managesieve.js
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	/**
	* (Manage)Sieve Filters plugin
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (c) 2012-2014, The Roundcube Dev Team
	*
	* The JavaScript code in this page is free software: you can redistribute it
	* and/or modify it under the terms of the GNU General Public License
	* as published by the Free Software Foundation, either version 3 of
	* the License, or (at your option) any later version.
	*
	* @licend The above is the entire license notice
	* for the JavaScript code in this file.
	*/

	if (window.rcmail) {
	rcmail.addEventListener('init', function(evt) {
	// add managesieve-create command to message_commands array,
	// so it's state will be updated on message selection/unselection
	if (rcmail.env.task == 'mail') {
	if (rcmail.env.action != 'show')
	rcmail.env.message_commands.push('managesieve-create');
	else
	rcmail.enable_command('managesieve-create', true);
	}

	if (rcmail.env.task == 'mail' \|\| rcmail.env.action.startsWith('plugin.managesieve')) {
	// Create layer for form tips
	if (!rcmail.env.framed) {
	rcmail.env.ms_tip_layer = $('<div id="managesieve-tip" class="popupmenu"></div>');
	rcmail.env.ms_tip_layer.appendTo(document.body);
	}
	}

	// register commands
	rcmail.register_command('plugin.managesieve-save', function() { rcmail.managesieve_save() });
	rcmail.register_command('plugin.managesieve-act', function() { rcmail.managesieve_act() });
	rcmail.register_command('plugin.managesieve-add', function() { rcmail.managesieve_add() });
	rcmail.register_command('plugin.managesieve-del', function() { rcmail.managesieve_del() });
	rcmail.register_command('plugin.managesieve-move', function() { rcmail.managesieve_move() });
	rcmail.register_command('plugin.managesieve-setadd', function() { rcmail.managesieve_setadd() });
	rcmail.register_command('plugin.managesieve-setdel', function() { rcmail.managesieve_setdel() });
	rcmail.register_command('plugin.managesieve-setact', function() { rcmail.managesieve_setact() });
	rcmail.register_command('plugin.managesieve-setget', function() { rcmail.managesieve_setget() });

	if (rcmail.env.action.startsWith('plugin.managesieve')) {
	if (rcmail.gui_objects.sieveform) {
	rcmail.enable_command('plugin.managesieve-save', true);
	sieve_form_init();
	}
	else {
	rcmail.enable_command('plugin.managesieve-add', 'plugin.managesieve-setadd', !rcmail.env.sieveconnerror);
	}

	var setcnt, set = rcmail.env.currentset;

	if (rcmail.gui_objects.filterslist) {
	rcmail.filters_list = new rcube_list_widget(rcmail.gui_objects.filterslist,
	{multiselect:false, draggable:true, keyboard:true});

	rcmail.filters_list
	.addEventListener('select', function(e) { rcmail.managesieve_select(e); })
	.addEventListener('dragstart', function(e) { rcmail.managesieve_dragstart(e); })
	.addEventListener('dragend', function(e) { rcmail.managesieve_dragend(e); })
	.addEventListener('initrow', function(row) {
	row.obj.onmouseover = function() { rcmail.managesieve_focus_filter(row); };
	row.obj.onmouseout = function() { rcmail.managesieve_unfocus_filter(row); };
	})
	.init();
	}

	if (rcmail.gui_objects.filtersetslist) {
	rcmail.filtersets_list = new rcube_list_widget(rcmail.gui_objects.filtersetslist,
	{multiselect:false, draggable:false, keyboard:true});

	rcmail.filtersets_list.init().focus();

	if (set != null) {
	set = rcmail.managesieve_setid(set);
	rcmail.filtersets_list.select(set);
	}

	// attach select event after initial record was selected
	rcmail.filtersets_list.addEventListener('select', function(e) { rcmail.managesieve_setselect(e); });

	setcnt = rcmail.filtersets_list.rowcount;
	rcmail.enable_command('plugin.managesieve-set', true);
	rcmail.enable_command('plugin.managesieve-setact', 'plugin.managesieve-setget', setcnt);
	rcmail.enable_command('plugin.managesieve-setdel', setcnt > 1);

	// Fix dragging filters over sets list
	$('tr', rcmail.gui_objects.filtersetslist).each(function (i, e) { rcmail.managesieve_fixdragend(e); });
	}
	}

	if (rcmail.gui_objects.sieveform && rcmail.env.rule_disabled)
	$('#disabled').attr('checked', true);
	});
	};

	/*********************************************************/
	/******* Managesieve UI methods *******/
	/*********************************************************/

	rcube_webmail.prototype.managesieve_add = function()
	{
	this.load_managesieveframe();
	this.filters_list.clear_selection();
	};

	rcube_webmail.prototype.managesieve_del = function()
	{
	var id = this.filters_list.get_single_selection();
	if (confirm(this.get_label('managesieve.filterdeleteconfirm'))) {
	var lock = this.set_busy(true, 'loading');
	this.http_post('plugin.managesieve-action',
	'_act=delete&_fid='+this.filters_list.rows[id].uid, lock);
	}
	};

	rcube_webmail.prototype.managesieve_act = function()
	{
	var id = this.filters_list.get_single_selection(),
	lock = this.set_busy(true, 'loading');

	this.http_post('plugin.managesieve-action',
	'_act=act&_fid='+this.filters_list.rows[id].uid, lock);
	};

	// Filter selection
	rcube_webmail.prototype.managesieve_select = function(list)
	{
	var id = list.get_single_selection();
	if (id != null)
	this.load_managesieveframe(list.rows[id].uid);
	};

	// Set selection
	rcube_webmail.prototype.managesieve_setselect = function(list)
	{
	this.show_contentframe(false);
	this.filters_list.clear(true);
	this.enable_command('plugin.managesieve-setdel', list.rowcount > 1);
	this.enable_command('plugin.managesieve-setact', 'plugin.managesieve-setget', true);

	var id = list.get_single_selection();
	if (id != null)
	this.managesieve_list(this.env.filtersets[id]);
	};

	rcube_webmail.prototype.managesieve_rowid = function(id)
	{
	var i, rows = this.filters_list.rows;

	for (i in rows)
	if (rows[i] != null && rows[i].uid == id)
	return i;
	};

	// Returns set's identifier
	rcube_webmail.prototype.managesieve_setid = function(name)
	{
	for (var i in this.env.filtersets)
	if (this.env.filtersets[i] == name)
	return i;
	};

	// Filters listing request
	rcube_webmail.prototype.managesieve_list = function(script)
	{
	var lock = this.set_busy(true, 'loading');

	this.http_post('plugin.managesieve-action', '_act=list&_set='+urlencode(script), lock);
	};

	// Script download request
	rcube_webmail.prototype.managesieve_setget = function()
	{
	var id = this.filtersets_list.get_single_selection(),
	script = this.env.filtersets[id];

	this.goto_url('plugin.managesieve-action', {_act: 'setget', _set: script}, false, true);
	};

	// Set activate/deactivate request
	rcube_webmail.prototype.managesieve_setact = function()
	{
	var id = this.filtersets_list.get_single_selection(),
	lock = this.set_busy(true, 'loading'),
	script = this.env.filtersets[id],
	action = $('#rcmrow'+id).hasClass('disabled') ? 'setact' : 'deact';

	this.http_post('plugin.managesieve-action', '_act='+action+'&_set='+urlencode(script), lock);
	};

	// Set delete request
	rcube_webmail.prototype.managesieve_setdel = function()
	{
	if (!confirm(this.get_label('managesieve.setdeleteconfirm')))
	return false;

	var id = this.filtersets_list.get_single_selection(),
	lock = this.set_busy(true, 'loading'),
	script = this.env.filtersets[id];

	this.http_post('plugin.managesieve-action', '_act=setdel&_set='+urlencode(script), lock);
	};

	// Set add request
	rcube_webmail.prototype.managesieve_setadd = function()
	{
	this.filters_list.clear_selection();
	this.enable_command('plugin.managesieve-act', 'plugin.managesieve-del', false);

	if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
	var lock = this.set_busy(true, 'loading');
	target = window.frames[this.env.contentframe];
	target.location.href = this.env.comm_path+'&_action=plugin.managesieve-action&_framed=1&_newset=1&_unlock='+lock;
	}
	};

	rcube_webmail.prototype.managesieve_updatelist = function(action, o)
	{
	this.set_busy(true);

	switch (action) {
	// Delete filter row
	case 'del':
	var id = o.id, list = this.filters_list;

	list.remove_row(this.managesieve_rowid(o.id));
	list.clear_selection();
	this.show_contentframe(false);
	this.enable_command('plugin.managesieve-del', 'plugin.managesieve-act', false);

	// filter identifiers changed, fix the list
	$('tr', this.filters_list.list).each(function() {
	// remove hidden (deleted) rows
	if (this.style.display == 'none') {
	$(this).detach();
	return;
	}

	var rowid = this.id.substr(6);

	// remove all attached events
	$(this).off();

	// update row id
	if (rowid > id) {
	this.uid = rowid - 1;
	$(this).attr('id', 'rcmrow' + this.uid);
	}
	});
	list.init();

	break;

	// Update filter row
	case 'update':
	var i, row = $('#rcmrow'+this.managesieve_rowid(o.id));

	if (o.name)
	$('td', row).text(o.name);
	if (o.disabled)
	row.addClass('disabled');
	else
	row.removeClass('disabled');

	$('#disabled', $('iframe').contents()).prop('checked', o.disabled);

	break;

	// Add filter row to the list
	case 'add':
	var list = this.filters_list,
	row = $('<tr><td class="name"></td></tr>');

	$('td', row).text(o.name);
	row.attr('id', 'rcmrow'+o.id);
	if (o.disabled)
	row.addClass('disabled');

	list.insert_row(row.get(0));
	list.highlight_row(o.id);

	this.enable_command('plugin.managesieve-del', 'plugin.managesieve-act', true);

	break;

	// Filling rules list
	case 'list':
	var i, tr, td, el, list = this.filters_list;

	if (o.clear)
	list.clear();

	for (i in o.list) {
	el = o.list[i];
	tr = document.createElement('TR');
	td = document.createElement('TD');

	$(td).text(el.name);
	td.className = 'name';
	tr.id = 'rcmrow' + el.id;
	if (el['class'])
	tr.className = el['class'];
	tr.appendChild(td);

	list.insert_row(tr);
	}

	if (o.set)
	list.highlight_row(o.set);
	else
	this.enable_command('plugin.managesieve-del', 'plugin.managesieve-act', false);

	break;

	// Sactivate/deactivate set
	case 'setact':
	var id = this.managesieve_setid(o.name), row = $('#rcmrow' + id);
	if (o.active) {
	if (o.all)
	$('tr', this.gui_objects.filtersetslist).addClass('disabled');
	row.removeClass('disabled');
	}
	else
	row.addClass('disabled');

	break;

	// Delete set row
	case 'setdel':
	var id = this.managesieve_setid(o.name);

	this.filtersets_list.remove_row(id);
	this.filters_list.clear();
	this.show_contentframe(false);
	this.enable_command('plugin.managesieve-setdel', 'plugin.managesieve-setact', 'plugin.managesieve-setget', false);

	delete this.env.filtersets[id];

	break;

	// Create set row
	case 'setadd':
	var id = 'S' + new Date().getTime(),
	list = this.filtersets_list,
	row = $('<tr class="disabled"><td class="name"></td></tr>');

	$('td', row).text(o.name);
	row.attr('id', 'rcmrow'+id);

	this.env.filtersets[id] = o.name;
	list.insert_row(row.get(0));

	// move row into its position on the list
	if (o.index != list.rowcount-1) {
	row.detach();
	var elem = $('tr:visible', list.list).get(o.index);
	row.insertBefore(elem);
	}

	list.select(id);

	// Fix dragging filters over sets list
	this.managesieve_fixdragend(row);

	break;
	}

	this.set_busy(false);
	};

	// load filter frame
	rcube_webmail.prototype.load_managesieveframe = function(id)
	{
	var has_id = typeof(id) != 'undefined' && id != null;
	this.enable_command('plugin.managesieve-act', 'plugin.managesieve-del', has_id);

	if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
	target = window.frames[this.env.contentframe];
	var msgid = this.set_busy(true, 'loading');
	target.location.href = this.env.comm_path+'&_action=plugin.managesieve-action&_framed=1'
	+(has_id ? '&_fid='+id : '')+'&_unlock='+msgid;
	}
	};

	// load filter frame
	rcube_webmail.prototype.managesieve_dragstart = function(list)
	{
	var id = this.filters_list.get_single_selection();

	this.drag_active = true;
	this.drag_filter = id;
	};

	rcube_webmail.prototype.managesieve_dragend = function(e)
	{
	if (this.drag_active) {
	if (this.drag_filter_target) {
	var lock = this.set_busy(true, 'loading');

	this.show_contentframe(false);
	this.http_post('plugin.managesieve-action', '_act=move&_fid='+this.drag_filter
	+'&_to='+this.drag_filter_target, lock);
	}
	this.drag_active = false;
	}
	};

	// Fixes filters dragging over sets list
	// @TODO: to be removed after implementing copying filters
	rcube_webmail.prototype.managesieve_fixdragend = function(elem)
	{
	var p = this;
	$(elem).on('mouseup' + ((bw.iphone \|\| bw.ipad) ? ' touchend' : ''), function(e) {
	if (p.drag_active)
	p.filters_list.drag_mouse_up(e);
	});
	};

	rcube_webmail.prototype.managesieve_focus_filter = function(row)
	{
	var id = row.id.replace(/^rcmrow/, '');
	if (this.drag_active && id != this.drag_filter) {
	this.drag_filter_target = id;
	$(row.obj).addClass(id < this.drag_filter ? 'filtermoveup' : 'filtermovedown');
	}
	};

	rcube_webmail.prototype.managesieve_unfocus_filter = function(row)
	{
	if (this.drag_active) {
	$(row.obj).removeClass('filtermoveup filtermovedown');
	this.drag_filter_target = null;
	}
	};

	/*********************************************************/
	/******* Filter Form methods *******/
	/*********************************************************/

	// Form submition
	rcube_webmail.prototype.managesieve_save = function()
	{
	if (this.env.action == 'plugin.managesieve-vacation') {
	var data = $(this.gui_objects.sieveform).serialize();
	this.http_post('plugin.managesieve-vacation', data, this.display_message(this.get_label('managesieve.vacation.saving'), 'loading'));
	return;
	}

	if (parent.rcmail && parent.rcmail.filters_list && this.gui_objects.sieveform.name != 'filtersetform') {
	var id = parent.rcmail.filters_list.get_single_selection();
	if (id != null)
	this.gui_objects.sieveform.elements['_fid'].value = parent.rcmail.filters_list.rows[id].uid;
	}
	this.gui_objects.sieveform.submit();
	};

	// Operations on filters form
	rcube_webmail.prototype.managesieve_ruleadd = function(id)
	{
	this.http_post('plugin.managesieve-action', '_act=ruleadd&_rid='+id);
	};

	rcube_webmail.prototype.managesieve_rulefill = function(content, id, after)
	{
	if (content != '') {
	// create new element
	var div = document.getElementById('rules'),
	row = document.createElement('div');

	this.managesieve_insertrow(div, row, after);
	// fill row after inserting (for IE)
	row.setAttribute('id', 'rulerow'+id);
	row.className = 'rulerow';
	row.innerHTML = content;

	// initialize smart list inputs
	$('textarea[data-type="list"]', row).each(function() {
	smart_field_init(this);
	});

	this.managesieve_formbuttons(div);
	}
	};

	rcube_webmail.prototype.managesieve_ruledel = function(id)
	{
	if ($('#ruledel'+id).hasClass('disabled'))
	return;

	if (confirm(this.get_label('managesieve.ruledeleteconfirm'))) {
	var row = document.getElementById('rulerow'+id);
	row.parentNode.removeChild(row);
	this.managesieve_formbuttons(document.getElementById('rules'));
	}
	};

	rcube_webmail.prototype.managesieve_actionadd = function(id)
	{
	this.http_post('plugin.managesieve-action', '_act=actionadd&_aid='+id);
	};

	rcube_webmail.prototype.managesieve_actionfill = function(content, id, after)
	{
	if (content != '') {
	var div = document.getElementById('actions'),
	row = document.createElement('div');

	this.managesieve_insertrow(div, row, after);
	// fill row after inserting (for IE)
	row.className = 'actionrow';
	row.setAttribute('id', 'actionrow'+id);
	row.innerHTML = content;

	// initialize smart list inputs
	$('textarea[data-type="list"]', row).each(function() {
	smart_field_init(this);
	});

	this.managesieve_formbuttons(div);
	}
	};

	rcube_webmail.prototype.managesieve_actiondel = function(id)
	{
	if ($('#actiondel'+id).hasClass('disabled'))
	return;

	if (confirm(this.get_label('managesieve.actiondeleteconfirm'))) {
	var row = document.getElementById('actionrow'+id);
	row.parentNode.removeChild(row);
	this.managesieve_formbuttons(document.getElementById('actions'));
	}
	};

	// insert rule/action row in specified place on the list
	rcube_webmail.prototype.managesieve_insertrow = function(div, row, after)
	{
	for (var i=0; i<div.childNodes.length; i++) {
	if (div.childNodes[i].id == (div.id == 'rules' ? 'rulerow' : 'actionrow') + after)
	break;
	}

	if (div.childNodes[i+1])
	div.insertBefore(row, div.childNodes[i+1]);
	else
	div.appendChild(row);
	};

	// update Delete buttons status
	rcube_webmail.prototype.managesieve_formbuttons = function(div)
	{
	var i, button, buttons = [];

	// count and get buttons
	for (i=0; i<div.childNodes.length; i++) {
	if (div.id == 'rules' && div.childNodes[i].id) {
	if (/rulerow/.test(div.childNodes[i].id))
	buttons.push('ruledel' + div.childNodes[i].id.replace(/rulerow/, ''));
	}
	else if (div.childNodes[i].id) {
	if (/actionrow/.test(div.childNodes[i].id))
	buttons.push( 'actiondel' + div.childNodes[i].id.replace(/actionrow/, ''));
	}
	}

	for (i=0; i<buttons.length; i++) {
	button = document.getElementById(buttons[i]);
	if (i>0 \|\| buttons.length>1) {
	$(button).removeClass('disabled');
	}
	else {
	$(button).addClass('disabled');
	}
	}
	};

	// update vacation addresses field with user identities
	rcube_webmail.prototype.managesieve_vacation_addresses = function(id)
	{
	var lock = this.set_busy(true, 'loading');
	this.http_post('plugin.managesieve-action', {_act: 'addresses', _aid: id}, lock);
	};

	// update vacation addresses field with user identities
	rcube_webmail.prototype.managesieve_vacation_addresses_update = function(id, addresses)
	{
	var field = $('#vacation_addresses,#action_addresses' + (id \|\| ''));
	smart_field_reset(field.get(0), addresses);
	};

	function rule_header_select(id)
	{
	var obj = document.getElementById('header' + id),
	size = document.getElementById('rule_size' + id),
	msg = document.getElementById('rule_message' + id),
	op = document.getElementById('rule_op' + id),
	header = document.getElementById('custom_header' + id + '_list'),
	custstr = document.getElementById('custom_var' + id + '_list'),
	mod = document.getElementById('rule_mod' + id),
	trans = document.getElementById('rule_trans' + id),
	comp = document.getElementById('rule_comp' + id),
	datepart = document.getElementById('rule_date_part' + id),
	dateheader = document.getElementById('rule_date_header_div' + id),
	rule = $('#rule_op' + id),
	h = obj.value;

	if (h == 'size') {
	size.style.display = 'inline';
	$.each([op, header, custstr, mod, trans, comp, msg], function() { this.style.display = 'none'; });
	}
	else if (h == 'message') {
	msg.style.display = 'inline';
	$.each([op, header, custstr, mod, trans, comp, size], function() { this.style.display = 'none'; });
	}
	else {
	header.style.display = h != '...' ? 'none' : 'inline-block';
	custstr.style.display = h != 'string' ? 'none' : 'inline-block';
	size.style.display = 'none';
	op.style.display = 'inline';
	comp.style.display = '';
	mod.style.display = h == 'body' \|\| h == 'currentdate' \|\| h == 'date' \|\| h == 'string' ? 'none' : 'block';
	trans.style.display = h == 'body' ? 'block' : 'none';
	msg.style.display = h == 'message' ? 'block' : 'none';
	}

	if (datepart)
	datepart.style.display = h == 'currentdate' \|\| h == 'date' ? 'inline' : 'none';
	if (dateheader)
	dateheader.style.display = h == 'date' ? '' : 'none';

	$('[value="exists"],[value="notexists"]', rule).prop('disabled', h == 'string');
	if (!rule.val() \|\| rule.val().match(/^(exists\|notexists)$/))
	rule.val('contains');

	rule_op_select(op, id, h);
	rule_mod_select(id, h);

	obj.style.width = h == '...' ? '40px' : '';
	};

	function rule_op_select(obj, id, header)
	{
	var target = document.getElementById('rule_target' + id + '_list');

	if (!header)
	header = document.getElementById('header' + id).value;

	target.style.display = obj.value.match(/^(exists\|notexists)$/) \|\| header.match(/^(size\|message)$/) ? 'none' : 'inline-block';
	};

	function rule_trans_select(id)
	{
	var obj = document.getElementById('rule_trans_op' + id),
	target = document.getElementById('rule_trans_type' + id);

	target.style.display = obj.value != 'content' ? 'none' : 'inline';
	};

	function rule_mod_select(id, header)
	{
	var obj = document.getElementById('rule_mod_op' + id),
	target = document.getElementById('rule_mod_type' + id),
	duplicate = document.getElementById('rule_duplicate_div' + id),
	index = document.getElementById('rule_index_div' + id);

	if (!header)
	header = document.getElementById('header' + id).value;

	target.style.display = obj.value != 'address' && obj.value != 'envelope' ? 'none' : 'inline';

	if (index)
	index.style.display = !header.match(/^(body\|currentdate\|size\|message\|string)$/) && obj.value != 'envelope' ? '' : 'none';

	if (duplicate)
	duplicate.style.display = header == 'message' ? '' : 'none';
	};

	function rule_join_radio(value)
	{
	$('#rules').css('display', value == 'any' ? 'none' : 'block');
	};

	function rule_adv_switch(id, elem)
	{
	var elem = $(elem), enabled = elem.hasClass('hide'), adv = $('#rule_advanced'+id);

	if (enabled) {
	adv.hide();
	elem.removeClass('hide').addClass('show');
	}
	else {
	adv.show();
	elem.removeClass('show').addClass('hide');
	}
	}

	function action_type_select(id)
	{
	var obj = document.getElementById('action_type' + id),
	v = obj.value, enabled = {},
	elems = {
	mailbox: document.getElementById('action_mailbox' + id),
	target: document.getElementById('redirect_target' + id),
	target_area: document.getElementById('action_target_area' + id),
	flags: document.getElementById('action_flags' + id),
	vacation: document.getElementById('action_vacation' + id),
	set: document.getElementById('action_set' + id),
	notify: document.getElementById('action_notify' + id)
	};

	if (v == 'fileinto' \|\| v == 'fileinto_copy') {
	enabled.mailbox = 1;
	}
	else if (v == 'redirect' \|\| v == 'redirect_copy') {
	enabled.target = 1;
	}
	else if (v.match(/^reject\|ereject$/)) {
	enabled.target_area = 1;
	}
	else if (v.match(/^(add\|set\|remove)flag$/)) {
	enabled.flags = 1;
	}
	else if (v == 'vacation') {
	enabled.vacation = 1;
	}
	else if (v == 'set') {
	enabled.set = 1;
	}
	else if (v == 'notify') {
	enabled.notify = 1;
	}

	for (var x in elems) {
	elems[x].style.display = !enabled[x] ? 'none' : 'inline';
	}
	};

	function vacation_action_select()
	{
	var selected = $('#vacation_action').val();

	$('#action_target_span')[selected == 'discard' \|\| selected == 'keep' ? 'hide' : 'show']();
	};

	// Inititalizes smart list input
	function smart_field_init(field)
	{
	var id = field.id + '_list',
	area = $('<span class="listarea"></span>'),
	list = field.value ? field.value.split("\n") : [''];

	if ($('#'+id).length)
	return;

	// add input rows
	$.each(list, function(i, v) {
	area.append(smart_field_row(v, field.name, i, $(field).data('size')));
	});

	area.attr('id', id);
	field = $(field);

	if (field.attr('disabled'))
	area.hide();
	// disable the original field anyway, we don't want it in POST
	else
	field.prop('disabled', true);

	field.after(area);

	if (field.hasClass('error')) {
	area.addClass('error');
	rcmail.managesieve_tip_register([[id, field.data('tip')]]);
	}
	};

	function smart_field_row(value, name, idx, size)
	{
	// build row element content
	var input, content = '<span class="listelement">'
	+ '<span class="reset"></span><input type="text"></span>',
	elem = $(content),
	attrs = {value: value, name: name + '[]'};

	if (size)
	attrs.size = size;

	input = $('input', elem).attr(attrs).keydown(function(e) {
	var input = $(this);

	// element creation event (on Enter)
	if (e.which == 13) {
	var name = input.attr('name').replace(/\[\]$/, ''),
	dt = (new Date()).getTime(),
	elem = smart_field_row('', name, dt, size);

	input.parent().after(elem);
	$('input', elem).focus();
	}
	// backspace or delete: remove input, focus previous one
	else if ((e.which == 8 \|\| e.which == 46) && input.val() == '') {

	var parent = input.parent(), siblings = parent.parent().children();

	if (siblings.length > 1) {
	if (parent.prev().length)
	parent.prev().children('input').focus();
	else
	parent.next().children('input').focus();

	parent.remove();
	return false;
	}
	}
	});

	// element deletion event
	$('span[class="reset"]', elem).click(function() {
	var span = $(this.parentNode);

	if (span.parent().children().length > 1)
	span.remove();
	else
	$('input', span).val('').focus();
	});

	return elem;
	}

	// Reset and fill the smart list input with new data
	function smart_field_reset(field, data)
	{
	var id = field.id + '_list',
	list = data.length ? data : [''];
	area = $('#' + id);

	area.empty();

	// add input rows
	$.each(list, function(i, v) {
	area.append(smart_field_row(v, field.name, i, $(field).data('size')));
	});
	}

	// Register onmouse(leave/enter) events for tips on specified form element
	rcube_webmail.prototype.managesieve_tip_register = function(tips)
	{
	var n, framed = parent.rcmail,
	tip = framed ? parent.rcmail.env.ms_tip_layer : rcmail.env.ms_tip_layer;

	for (n in tips) {
	$('#'+tips[n][0])
	.data('tip', tips[n][1])
	.mouseleave(function(e) { tip.hide(); })
	.mouseenter(function(e) {
	var elem = $(this),
	offset = elem.offset(),
	left = offset.left,
	top = offset.top - 12,
	minwidth = elem.width();

	if (framed) {
	offset = $((rcmail.env.task == 'mail' ? '#sievefilterform > iframe' : '#filter-box'), parent.document).offset();
	top += offset.top;
	left += offset.left;
	}

	tip.html(elem.data('tip'));
	top -= tip.height();

	tip.css({left: left, top: top, minWidth: (minwidth-2) + 'px'}).show();
	});
	}
	};

	// format time string
	function sieve_formattime(hour, minutes)
	{
	var i, c, h, time = '', format = rcmail.env.time_format \|\| 'H:i';

	for (i=0; i<format.length; i++) {
	c = format.charAt(i);
	switch (c) {
	case 'a': time += hour > 12 ? 'am' : 'pm'; break;
	case 'A': time += hour > 12 ? 'AM' : 'PM'; break;
	case 'g':
	case 'h':
	h = hour == 0 ? 12 : hour > 12 ? hour - 12 : hour;
	time += (c == 'h' && hour < 10 ? '0' : '') + hour;
	break;
	case 'G': time += hour; break;
	case 'H': time += (hour < 10 ? '0' : '') + hour; break;
	case 'i': time += (minutes < 10 ? '0' : '') + minutes; break;
	case 's': time += '00';
	default: time += c;
	}
	}

	return time;
	}

	function sieve_form_init()
	{
	var form = rcmail.gui_objects.sieveform;

	// resize dialog window
	if (rcmail.env.action == 'plugin.managesieve' && rcmail.env.task == 'mail') {
	parent.rcmail.managesieve_dialog_resize(form);
	}

	$('input[type="text"]:first', form).focus();

	// initialize smart list inputs
	$('textarea[data-type="list"]', form).each(function() {
	smart_field_init(this);
	});

	// initialize rules form(s)
	$('[name="_header[]"]', form).each(function() {
	if (/([0-9]+)$/.test(this.id)) {
	rule_header_select(RegExp.$1);
	}
	});

	// enable date pickers on date fields
	if ($.datepicker && rcmail.env.date_format) {
	$.datepicker.setDefaults({
	dateFormat: rcmail.env.date_format,
	changeMonth: true,
	showOtherMonths: true,
	selectOtherMonths: true,
	onSelect: function(dateText) { $(this).focus().val(dateText); }
	});
	$('input.datepicker').datepicker();
	}

	// configure drop-down menu on time input fields based on jquery UI autocomplete
	$('#vacation_timefrom, #vacation_timeto')
	.attr('autocomplete', "off")
	.autocomplete({
	delay: 100,
	minLength: 1,
	source: function(p, callback) {
	var h, result = [];
	for (h = 0; h < 24; h++)
	result.push(sieve_formattime(h, 0));
	result.push(sieve_formattime(23, 59));

	return callback(result);
	},
	open: function(event, ui) {
	// scroll to current time
	var $this = $(this), val = $this.val(),
	widget = $this.autocomplete('widget').css('width', '10em'),
	menu = $this.data('ui-autocomplete').menu;

	if (val && val.length)
	widget.children().each(function() {
	var li = $(this);
	if (li.text().indexOf(val) == 0)
	menu._scrollIntoView(li);
	});
	},
	select: function(event, ui) {
	$(this).val(ui.item.value);
	return false;
	}
	})
	.click(function() { // show drop-down upon clicks
	$(this).autocomplete('search', $(this).val() \|\| ' ');
	})

	// display advanced controls when contain errors
	$('input.error').each(function() {
	if (String(this.id).match(/([0-9]+)$/)) {
	$('#ruleadv' + RegExp.$1 + '.show').click();
	}
	});
	}


	/*********************************************************/
	/******* Mail UI methods *******/
	/*********************************************************/

	rcube_webmail.prototype.managesieve_create = function(force)
	{
	if (!force && this.env.action != 'show') {
	var uid = this.message_list.get_single_selection(),
	lock = this.set_busy(true, 'loading');

	this.http_post('plugin.managesieve-action', {_uid: uid}, lock);
	return;
	}

	if (!this.env.sieve_headers \|\| !this.env.sieve_headers.length)
	return;

	var i, html, buttons = {}, dialog = $("#sievefilterform");

	// create dialog window
	if (!dialog.length) {
	dialog = $('<div id="sievefilterform"></div>');
	$('body').append(dialog);
	}

	// build dialog window content
	html = '<fieldset><legend>'+this.get_label('managesieve.usedata')+'</legend><ul>';
	for (i in this.env.sieve_headers)
	html += '<li><input type="checkbox" name="headers[]" id="sievehdr'+i+'" value="'+i+'" checked="checked" />'
	+'<label for="sievehdr'+i+'">'+this.env.sieve_headers[i][0]+':</label> '+this.env.sieve_headers[i][1]+'</li>';
	html += '</ul></fieldset>';

	dialog.html(html);

	// [Next Step] button action
	buttons[this.get_label('managesieve.nextstep')] = function () {
	// check if there's at least one checkbox checked
	var hdrs = $('input[name="headers[]"]:checked', dialog);
	if (!hdrs.length) {
	alert(rcmail.get_label('managesieve.nodata'));
	return;
	}

	// build frame URL
	var url = rcmail.get_task_url('mail');
	url = rcmail.add_url(url, '_action', 'plugin.managesieve');
	url = rcmail.add_url(url, '_framed', 1);

	hdrs.map(function() {
	var val = rcmail.env.sieve_headers[this.value];
	url = rcmail.add_url(url, 'r['+this.value+']', val[0]+':'+val[1]);
	});

	// load form in the iframe
	var frame = $('<iframe>').attr({src: url, frameborder: 0})
	dialog.empty().append(frame).dialog('widget').resize();

	// Change [Next Step] button with [Save] button
	buttons = {};
	buttons[rcmail.get_label('save')] = function() {
	var win = $('iframe', dialog).get(0).contentWindow;
	win.rcmail.managesieve_save();
	};
	dialog.dialog('option', 'buttons', buttons);
	};

	// show dialog window
	dialog.dialog({
	modal: false,
	resizable: true,
	closeOnEscape: true,
	title: this.get_label('managesieve.newfilter'),
	close: function() { rcmail.managesieve_dialog_close(); },
	buttons: buttons,
	minWidth: 600,
	minHeight: 300,
	height: 250
	}).show();

	this.env.managesieve_dialog = dialog;
	}

	rcube_webmail.prototype.managesieve_dialog_close = function()
	{
	var dialog = this.env.managesieve_dialog;

	// BUG(?): if we don't remove the iframe first, it will be reloaded
	dialog.html('');
	dialog.dialog('destroy').hide();
	}

	rcube_webmail.prototype.managesieve_dialog_resize = function(o)
	{
	var dialog = this.env.managesieve_dialog,
	win = $(window), form = $(o);
	width = $('fieldset:first', o).width(), // fieldset width is more appropriate here
	height = form.height(),
	w = win.width(), h = win.height();

	dialog.dialog('option', { height: Math.min(h-20, height+120), width: Math.min(w-20, width+65) });
	}

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