ui.js
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ui.js
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	/**
	* Roundcube functions for default skin interface
	*
	* Copyright (c) The Roundcube Dev Team
	*
	* The contents are subject to the Creative Commons Attribution-ShareAlike
	* License. It is allowed to copy, distribute, transmit and to adapt the work
	* by keeping credits to the original autors in the README file.
	* See http://creativecommons.org/licenses/by-sa/3.0/ for details.
	*
	* @license magnet:?xt=urn:btih:90dc5c0be029de84e523b9b3922520e79e0e6f08&dn=cc0.txt CC0-1.0
	*/

	function rcube_mail_ui()
	{
	var env = {};
	var popups = {};
	var popupconfig = {
	forwardmenu: { editable:1 },
	searchmenu: { editable:1, callback:searchmenu },
	attachmentmenu: { },
	listoptions: { editable:1 },
	groupmenu: { above:1 },
	mailboxmenu: { above:1 },
	spellmenu: { callback: spellmenu },
	'folder-selector': { iconized:1 }
	};

	var me = this;
	var mailviewsplit;
	var mailviewsplit2;
	var compose_headers = {};
	var prefs;

	// export public methods
	this.set = setenv;
	this.init = init;
	this.init_tabs = init_tabs;
	this.show_about = show_about;
	this.show_popup = show_popup;
	this.toggle_popup = toggle_popup;
	this.add_popup = add_popup;
	this.import_dialog = import_dialog;
	this.set_searchmod = set_searchmod;
	this.set_searchscope = set_searchscope;
	this.show_header_row = show_header_row;
	this.hide_header_row = hide_header_row;
	this.update_quota = update_quota;
	this.get_pref = get_pref;
	this.save_pref = save_pref;
	this.folder_search_init = folder_search_init;


	// set minimal mode on small screens (don't wait for document.ready)
	if (window.$ && document.body) {
	var minmode = get_pref('minimalmode');
	if (parseInt(minmode) \|\| (minmode === null && $(window).height() < 850)) {
	$(document.body).addClass('minimal');
	}

	if (bw.tablet) {
	$('#viewport').attr('content', "width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0");
	}

	$(document).ready(function() { me.init(); });
	}


	/**
	*
	*/
	function setenv(key, val)
	{
	env[key] = val;
	}

	/**
	* Get preference stored in browser
	*/
	function get_pref(key)
	{
	if (!prefs) {
	prefs = rcmail.local_storage_get_item('prefs.larry', {});
	}

	// fall-back to cookies
	if (prefs[key] == null) {
	var cookie = rcmail.get_cookie(key);
	if (cookie != null) {
	prefs[key] = cookie;

	// copy value to local storage and remove cookie (if localStorage is supported)
	if (rcmail.local_storage_set_item('prefs.larry', prefs)) {
	rcmail.set_cookie(key, cookie, new Date()); // expire cookie
	}
	}
	}

	return prefs[key];
	}

	/**
	* Saves preference value to browser storage
	*/
	function save_pref(key, val)
	{
	prefs[key] = val;

	// write prefs to local storage (if supported)
	if (!rcmail.local_storage_set_item('prefs.larry', prefs)) {
	// store value in cookie
	var exp = new Date();
	exp.setYear(exp.getFullYear() + 1);
	rcmail.set_cookie(key, val, exp);
	}
	}

	/**
	* Initialize UI
	* Called on document.ready
	*/
	function init()
	{
	rcmail.addEventListener('message', message_displayed);

	$.widget('ui.dialog', $.ui.dialog, {
	open: function() {
	this._super();
	dialog_open(this);
	return this;
	}});

	/* prepare minmode functions */
	$('#taskbar a').each(function(i,elem){
	$(elem).append('<span class="tooltip">' + $('.button-inner', this).html() + '</span>')
	});

	$('#taskbar .minmodetoggle').click(function(e){
	var ismin = $(document.body).toggleClass('minimal').hasClass('minimal');
	save_pref('minimalmode', ismin?1:0);
	$(window).resize();
	});

	/* mail task */
	if (rcmail.env.task == 'mail') {
	rcmail.addEventListener('menu-open', menu_toggle)
	.addEventListener('menu-close', menu_toggle)
	.addEventListener('menu-save', save_listoptions)
	.addEventListener('enable-command', enable_command)
	.addEventListener('responseafterlist', function(e){ switch_view_mode(rcmail.env.threading ? 'thread' : 'list', true) })
	.addEventListener('responseaftersearch', function(e){ switch_view_mode(rcmail.env.threading ? 'thread' : 'list', true) });

	var dragmenu = $('#dragmessagemenu');
	if (dragmenu.length) {
	rcmail.gui_object('dragmenu', 'dragmessagemenu');
	popups.dragmenu = dragmenu;
	}

	if (rcmail.env.action == 'show' \|\| rcmail.env.action == 'preview') {
	rcmail.addEventListener('aftershow-headers', function() { layout_messageview(); })
	.addEventListener('afterhide-headers', function() { layout_messageview(); });

	$('#previewheaderstoggle').click(function(e) {
	toggle_preview_headers();
	if (this.blur && !rcube_event.is_keyboard(e))
	this.blur();
	return false;
	});

	// add menu link for each attachment
	$('#attachment-list > li').each(function() {
	attachmentmenu_append(this);
	});

	if (get_pref('previewheaders') == '1') {
	toggle_preview_headers();
	}

	if (rcmail.env.action == 'show') {
	$('#messagecontent').focus();
	}
	}
	else if (rcmail.env.action == 'compose') {
	rcmail.addEventListener('fileappended', function(e) { if (e.attachment.complete) attachmentmenu_append(e.item); })
	.addEventListener('aftertoggle-editor', function(e) {
	window.setTimeout(function() { layout_composeview(); }, 200);
	})
	.addEventListener('compose-encrypted', function(e) {
	$("select[name='editorSelector']").prop('disabled', e.active);
	$('a.button.attach, a.button.responses')[(e.active?'addClass':'removeClass')]('disabled');
	$('#responseslist a.insertresponse')[(e.active?'removeClass':'addClass')]('active');
	});

	init_compose_editfields();

	$('#composeoptionstoggle').click(function(e){
	var expanded = $('#composeoptions').toggle().is(':visible');
	$('#composeoptionstoggle').toggleClass('remove').attr('aria-expanded', expanded ? 'true' : 'false');
	layout_composeview();
	save_pref('composeoptions', expanded ? '1' : '0');
	if (!rcube_event.is_keyboard(e))
	this.blur();
	return false;
	}).css('cursor', 'pointer');

	if (get_pref('composeoptions') !== '0') {
	$('#composeoptionstoggle').click();
	}

	// toggle compose options if opened in new window and they were visible before
	var opener_rc = rcmail.opener();
	if (opener_rc && opener_rc.env.action == 'compose' && $('#composeoptionstoggle', opener.document).hasClass('remove'))
	$('#composeoptionstoggle').click();

	new rcube_splitter({ id:'composesplitterv', p1:'#composeview-left', p2:'#composeview-right',
	orientation:'v', relative:true, start:206, min:170, size:12, render:layout_composeview }).init();

	// add menu link for each attachment
	$('#attachment-list > li').each(function() {
	attachmentmenu_append(this);
	});
	}
	else if (rcmail.env.action == 'bounce') {
	init_compose_editfields();
	}
	else if (rcmail.env.action == 'list' \|\| !rcmail.env.action) {
	mail_layout();

	$('#maillistmode').addClass(rcmail.env.threading ? '' : 'selected').click(function(e) { switch_view_mode('list'); return false; });
	$('#mailthreadmode').addClass(rcmail.env.threading ? 'selected' : '').click(function(e) { switch_view_mode('thread'); return false; });

	rcmail.init_pagejumper('#pagejumper');

	rcmail.addEventListener('setquota', update_quota)
	.addEventListener('layout-change', mail_layout);
	}
	else if (rcmail.env.action == 'get') {
	new rcube_splitter({ id:'mailpartsplitterv', p1:'#messagepartheader', p2:'#messagepartcontainer',
	orientation:'v', relative:true, start:226, min:150, size:12}).init();
	}

	if ($('#mailview-left').length) {
	new rcube_splitter({ id:'mailviewsplitterv', p1:'#mailview-left', p2:'#mailview-right',
	orientation:'v', relative:true, start:206, min:150, size:12, callback:render_mailboxlist, render:resize_leftcol }).init();
	}
	}
	/* settings task */
	else if (rcmail.env.task == 'settings') {
	rcmail.addEventListener('init', function(){
	var tab = '#settingstabpreferences';
	if (rcmail.env.action)
	tab = '#settingstab' + (rcmail.env.action.indexOf('identity')>0 ? 'identities' : rcmail.env.action.replace(/\./g, ''));

	$(tab).addClass('selected')
	.children().first().removeAttr('onclick').click(function() { return false; });
	});

	if (rcmail.env.action == 'folders') {
	new rcube_splitter({ id:'folderviewsplitter', p1:'#folderslist', p2:'#folder-details',
	orientation:'v', relative:true, start:266, min:180, size:12 }).init();

	rcmail.addEventListener('setquota', update_quota);

	folder_search_init($('#folderslist'));
	}
	else if (rcmail.env.action == 'identities') {
	new rcube_splitter({ id:'identviewsplitter', p1:'#identitieslist', p2:'#identity-details',
	orientation:'v', relative:true, start:266, min:180, size:12 }).init();
	}
	else if (rcmail.env.action == 'responses') {
	new rcube_splitter({ id:'responseviewsplitter', p1:'#responseslist', p2:'#response-details',
	orientation:'v', relative:true, start:266, min:180, size:12 }).init();
	}
	else if (rcmail.env.action == 'preferences' \|\| !rcmail.env.action) {
	new rcube_splitter({ id:'prefviewsplitter', p1:'#sectionslist', p2:'#preferences-box',
	orientation:'v', relative:true, start:266, min:180, size:12 }).init();
	}
	else if (rcmail.env.action == 'edit-prefs') {
	var legend = $('#preferences-details fieldset.advanced legend'),
	toggle = $('<a href="#toggle"></a>')
	.text(rcmail.gettext('toggleadvancedoptions'))
	.attr('title', rcmail.gettext('toggleadvancedoptions'))
	.addClass('advanced-toggle');

	legend.click(function(e) {
	toggle.html($(this).hasClass('collapsed') ? '▲' : '▼');

	$(this).toggleClass('collapsed')
	.closest('fieldset').children('.propform').toggle()
	}).append(toggle).addClass('collapsed')

	// this magically fixes incorrect position of toggle link created above in Firefox 3.6
	if (bw.mz)
	legend.parents('form').css('display', 'inline');
	}
	}
	/* addressbook task */
	else if (rcmail.env.task == 'addressbook') {
	rcmail.addEventListener('beforepushgroup', push_contactgroup)
	.addEventListener('beforepopgroup', pop_contactgroup)
	.addEventListener('menu-open', menu_toggle)
	.addEventListener('menu-close', menu_toggle);

	if (rcmail.env.action == '') {
	new rcube_splitter({ id:'addressviewsplitterd', p1:'#addressview-left', p2:'#addressview-right',
	orientation:'v', relative:true, start:206, min:150, size:12, render:resize_leftcol }).init();
	new rcube_splitter({ id:'addressviewsplitter', p1:'#addresslist', p2:'#contacts-box',
	orientation:'v', relative:true, start:266, min:260, size:12 }).init();
	}

	var dragmenu = $('#dragcontactmenu');
	if (dragmenu.length) {
	rcmail.gui_object('dragmenu', 'dragcontactmenu');
	popups.dragmenu = dragmenu;
	}
	}

	// turn a group of fieldsets into tabs
	$('.tabbed').each(function(idx, elem){ init_tabs(elem); })

	// decorate select elements
	$('select.decorated').each(function(){
	if (bw.opera) {
	$(this).removeClass('decorated');
	return;
	}

	var select = $(this),
	parent = select.parent(),
	height = Math.max(select.height(), 26) - 2,
	width = select.width() - 22,
	title = $('option', this).first().text();

	if ($('option:selected', this).val() != '')
	title = $('option:selected', this).text();

	var overlay = $('<a class="menuselector" tabindex="-1"><span class="handle">' + title + '</span></a>')
	.css('position', 'absolute')
	.offset(select.position())
	.insertAfter(select);

	overlay.children().width(width).height(height).css('line-height', (height - 1) + 'px');

	if (parent.css('position') != 'absolute')
	parent.css('position', 'relative');

	// re-set original select width to fix click action and options width in some browsers
	select.width(overlay.width())
	.on(bw.mz ? 'change keyup' : 'change', function() {
	var val = $('option:selected', this).text();
	$(this).next().children().text(val);
	});

	select
	.on('focus', function(e){ overlay.addClass('focus'); })
	.on('blur', function(e){ overlay.removeClass('focus'); });
	});

	// set min-width to show all toolbar buttons
	var screen = $('body.minwidth');
	if (screen.length) {
	screen.css('min-width', $('.toolbar').width() + $('#quicksearchbar').width() + $('#searchfilter').width() + 30);
	}

	// don't use $(window).resize() due to some unwanted side-effects
	window.onresize = resize;
	resize();
	}

	/**
	* Update UI on window resize
	*/
	function resize(e)
	{
	// resize in intervals to prevent lags and double onresize calls in Chrome (#1489005)
	var interval = e ? 10 : 0;

	if (rcmail.resize_timeout)
	window.clearTimeout(rcmail.resize_timeout);

	rcmail.resize_timeout = window.setTimeout(function() {
	if (rcmail.env.task == 'mail') {
	if (rcmail.env.action == 'show' \|\| rcmail.env.action == 'preview')
	layout_messageview();
	else if (rcmail.env.action == 'compose')
	layout_composeview();
	}

	// make iframe footer buttons float if scrolling is active
	$('body.iframe .footerleft').each(function(){
	var footer = $(this),
	body = $(document.body),
	floating = footer.hasClass('floating'),
	overflow = body.outerHeight(true) > $(window).height();

	if (overflow != floating) {
	var action = overflow ? 'addClass' : 'removeClass';
	footer[action]('floating');
	body[action]('floatingbuttons');
	}
	});
	}, interval);
	}

	/**
	* Triggered when a new user message is displayed
	*/
	function message_displayed(p)
	{
	var siblings = $(p.object).siblings('div');
	if (siblings.length)
	$(p.object).insertBefore(siblings.first());

	// show a popup dialog on errors
	if (p.type == 'error' && rcmail.env.task != 'login') {
	// hide original message object, we don't want both
	rcmail.hide_message(p.object);

	if (me.message_timer) {
	window.clearTimeout(me.message_timer);
	}

	if (!me.messagedialog) {
	me.messagedialog = $('<div>').addClass('popupdialog').hide();
	}

	var msg = p.message,
	dialog_close = function() {
	// check if dialog is still displayed, to prevent from js error
	me.messagedialog.is(':visible') && me.messagedialog.dialog('destroy').hide();
	};

	if (me.messagedialog.is(':visible') && me.messagedialog.text() != msg)
	msg = me.messagedialog.html() + '<p>' + p.message + '</p>';

	me.messagedialog.html(msg)
	.dialog({
	resizable: false,
	closeOnEscape: true,
	dialogClass: p.type,
	title: rcmail.gettext('errortitle'),
	close: dialog_close,
	hide: {effect: 'fadeOut'},
	width: 420,
	minHeight: 90
	}).show();

	me.messagedialog.closest('div[role=dialog]').attr('role', 'alertdialog');

	if (p.timeout > 0)
	me.message_timer = window.setTimeout(dialog_close, p.timeout);
	}
	}

	// modify dialog position to fully fit the close button into the window
	function dialog_open(dialog)
	{
	var me = $(dialog.uiDialog),
	offset = me.offset(),
	position = me.position(),
	width = me.outerWidth(),
	maxWidth = $(window).width(),
	topOffset = offset.top - 12;

	if (topOffset < 0)
	me.css('top', position.top - topOffset);
	if (offset.left + width + 12 > maxWidth)
	me.css('left', position.left - 12);
	}

	// Mail view layout initialization and change handler
	function mail_layout(p)
	{
	var layout = p ? p.new_layout : rcmail.env.layout,
	top = $('#mailview-top'),
	bottom = $('#mailview-bottom');

	if (p)
	$('#mainscreencontent').removeClass().addClass(layout);

	$('#mailviewsplitter')[layout == 'desktop' ? 'show' : 'hide']();
	$('#mailviewsplitter2')[layout == 'widescreen' ? 'show' : 'hide']();
	$('#mailpreviewframe')[layout != 'list' ? 'show' : 'hide']();
	rcmail.env.contentframe = layout == 'list' ? null : 'messagecontframe';

	if (layout == 'widescreen') {
	$('#countcontrols').detach().appendTo($('#messagelistheader'));
	top.css({height: 'auto', width: 394});
	bottom.css({top: 0, left: 406, height: 'auto'}).show();
	if (!mailviewsplit2) {
	mailviewsplit2 = new rcube_splitter({ id:'mailviewsplitter2', p1:'#mailview-top', p2:'#mailview-bottom',
	orientation:'v', relative:true, start:416, min:400, size:12});
	mailviewsplit2.init();
	}
	else
	mailviewsplit2.resize();
	}
	else if (layout == 'desktop') {
	top.css({height: 270, width: 'auto'});
	bottom.css({left: 0, top: 284, height: 'auto'}).show();
	if (!mailviewsplit) {
	mailviewsplit = new rcube_splitter({ id:'mailviewsplitter', p1:'#mailview-top', p2:'#mailview-bottom',
	orientation:'h', relative:true, start:276, min:150, size:12, offset:4 });
	mailviewsplit.init();
	}
	else
	mailviewsplit.resize();
	}
	else { // layout == 'list'
	top.css({height: 'auto', width: 'auto'});
	bottom.hide();
	}

	if (p && p.old_layout == 'widescreen') {
	$('#countcontrols').detach().appendTo($('#messagelistfooter'));
	}
	}

	/**
	* Adjust UI objects of the mail view screen
	*/
	function layout_messageview()
	{
	$('#messagecontent').css('top', ($('#messageheader').outerHeight() + 1) + 'px');
	$('#message-objects div a').addClass('button');

	if (!$('#attachment-list li').length) {
	$('div.rightcol').hide().attr('aria-hidden', 'true');
	$('div.leftcol').css('margin-right', '0');
	}

	var mvlpe = $('#messagebody.mailvelope, #messagebody > .mailvelope');
	if (mvlpe.length) {
	var h = $('#messagecontent').length ?
	$('#messagecontent').height() - 16 :
	$(window).height() - mvlpe.offset().top - 2;
	mvlpe.height(h);
	}
	}


	function render_mailboxlist(splitter)
	{
	// TODO: implement smart shortening of long folder names
	}


	function resize_leftcol(splitter)
	{
	// STUB
	}

	function init_compose_editfields()
	{
	// Show input elements with non-empty value
	var f, v, field, fields = ['cc', 'bcc', 'replyto', 'followupto'];
	for (f=0; f < fields.length; f++) {
	v = fields[f]; field = $('#_'+v);
	if (field.length) {
	field.on('change', {v: v}, function(e) { if (this.value) show_header_row(e.data.v, true); });
	if (field.val() != '')
	show_header_row(v, true);
	}
	}

	// adjust hight when textarea starts to scroll
	$("textarea[name='_to'], textarea[name='_cc'], textarea[name='_bcc']").change(function(e){ adjust_compose_editfields(this); }).change();
	rcmail.addEventListener('autocomplete_insert', function(p){ adjust_compose_editfields(p.field); });
	}

	function adjust_compose_editfields(elem)
	{
	if (elem.nodeName == 'TEXTAREA') {
	var $elem = $(elem), line_height = 14, // hard-coded because some browsers only provide the outer height in elem.clientHeight
	content_height = elem.scrollHeight,
	rows = elem.value.length > 80 && content_height > line_height*1.5 ? 2 : 1;
	$elem.css('height', (line_height*rows) + 'px');
	layout_composeview();
	}
	}

	function layout_composeview()
	{
	var body = $('#composebody'),
	form = $('#compose-content'),
	bottom = $('#composeview-bottom'),
	w, h, bh, ovflw, btns = 0,
	minheight = 300;

	if (!form.length)
	return;

	bh = form.height() - bottom.position().top;
	ovflw = minheight - bh;
	btns = ovflw > -100 ? 0 : 40;
	bottom.height(Math.max(minheight, bh));
	form.css('overflow', ovflw > 0 ? 'auto' : 'hidden');

	w = body.parent().width() - 5;
	h = body.parent().height() - 8;
	body.width(w).height(h);

	$('#composebodycontainer > div').width(w+7);
	$('#composebody_ifr').height(h + 4 - $('div.tox-toolbar').height());
	$('#googie_edit_layer').width(w).height(h);
	// $('#composebodycontainer')[(btns ? 'addClass' : 'removeClass')]('buttons');
	// $('#composeformbuttons')[(btns ? 'show' : 'hide')]();

	var abooks = $('#directorylist');
	if (abooks.length)
	$('#compose-contacts .scroller').css('top', abooks.position().top + abooks.outerHeight());
	}


	function update_quota(p)
	{
	var element = $('#quotadisplay'), menu = $('#quotamenu'),
	step = 24, step_count = 20,
	y = p.total ? Math.ceil(p.percent / 100 * step_count) * step : 0;

	// never show full-circle if quota is close to 100% but below.
	if (p.total && y == step * step_count && p.percent < 100)
	y -= step;

	element.css('background-position', '0 -' + y + 'px');
	element.attr('class', 'countdisplay p' + (Math.round(p.percent / 10) * 10));

	if (p.table) {
	if (!menu.length)
	menu = $('<div id="quotamenu" class="popupmenu">').appendTo($('body'));

	menu.html(p.table);
	element.css('cursor', 'pointer').off('click').on('click', function(e) {
	return rcmail.command('menu-open', 'quotamenu', e.target, e);
	});
	}
	}

	function folder_search_init(container)
	{
	// animation to unfold list search box
	$('.boxtitle a.search', container).click(function(e) {
	var title = $('.boxtitle', container),
	box = $('.listsearchbox', container),
	dir = box.is(':visible') ? -1 : 1,
	height = 34 + ($('select', box).length ? 22 : 0);

	box.slideToggle({
	duration: 160,
	progress: function(animation, progress) {
	if (dir < 0) progress = 1 - progress;
	$('.scroller', container).css('top', (title.outerHeight() + height * progress) + 'px');
	},
	complete: function() {
	box.toggleClass('expanded');
	if (box.is(':visible')) {
	box.find('input[type=text]').focus();
	height = 34 + ($('select', box).length ? $('select', box).outerHeight() + 4 : 0);
	$('.scroller', container).css('top', (title.outerHeight() + height) + 'px');
	}
	else {
	$('a.reset', box).click();
	}
	// TODO: save state in localStorage
	}
	});

	return false;
	});
	}

	function enable_command(p)
	{
	if (p.command == 'reply-list' && rcmail.env.reply_all_mode == 1) {
	var label = rcmail.gettext(p.status ? 'replylist' : 'replyall');
	if (rcmail.env.action == 'preview')
	$('a.button.replyall').attr('title', label);
	else
	$('a.button.reply-all').text(label).attr('title', label);
	}
	else if (p.command == 'compose-encrypted') {
	// show the toolbar button for Mailvelope
	$('a.button.encrypt').parent().show();
	}
	else if (p.command == 'compose-encrypted-signed') {
	// enable selector for encrypt and sign
	$('#encryptionmenulink').show();
	}
	}


	/**
	* Register a popup menu
	*/
	function add_popup(popup, config)
	{
	var obj = popups[popup] = $('#'+popup);
	obj.appendTo(document.body); // move it to top for proper absolute positioning

	if (obj.length)
	popupconfig[popup] = $.extend(popupconfig[popup] \|\| {}, config \|\| {});
	}

	/**
	* Trigger for popup menus
	*/
	function toggle_popup(popup, e, config)
	{
	// auto-register menu object
	if (config \|\| !popupconfig[popup])
	add_popup(popup, config);

	return rcmail.command('menu-open', popup, e.target, e);
	}

	/**
	* (Deprecated) trigger for popup menus
	*/
	function show_popup(popup, show, config)
	{
	// auto-register menu object
	if (config \|\| !popupconfig[popup])
	add_popup(popup, config);

	config = popupconfig[popup] \|\| {};
	var ref = $(config.link ? config.link : '#'+popup+'link'),
	pos = ref.offset();
	if (ref.has('.inner'))
	ref = ref.children('.inner');

	// fire command with simulated mouse click event
	return rcmail.command('menu-open',
	{ menu:popup, show:show },
	ref.get(0),
	$.Event('click', { target:ref.get(0), pageX:pos.left, pageY:pos.top, clientX:pos.left, clientY:pos.top }));
	}

	/**
	* Switch between short and full headers display in message preview
	*/
	function toggle_preview_headers()
	{
	$('#preview-shortheaders').toggle();
	var full = $('#preview-allheaders').toggle(),
	button = $('a#previewheaderstoggle');

	// add toggle button to full headers table
	if (full.is(':visible'))
	button.attr('href', '#hide').removeClass('add').addClass('remove').attr('aria-expanded', 'true');
	else
	button.attr('href', '#details').removeClass('remove').addClass('add').attr('aria-expanded', 'false');

	save_pref('previewheaders', full.is(':visible') ? '1' : '0');
	}


	/**
	*
	*/
	function switch_view_mode(mode, force)
	{
	if (force \|\| !$('#mail'+mode+'mode').hasClass('disabled')) {
	$('#maillistmode, #mailthreadmode').removeClass('selected').attr('tabindex', '0').attr('aria-disabled', 'false');
	$('#mail'+mode+'mode').addClass('selected').attr('tabindex', '-1').attr('aria-disabled', 'true');
	}
	}


	/** popup menu callbacks **/

	/**
	* Handler for menu-open and menu-close events
	*/
	function menu_toggle(p)
	{
	if (p && p.name == 'messagelistmenu') {
	show_listoptions(p);
	}
	else if (p) {
	// adjust menu position according to config
	var config = popupconfig[p.name] \|\| {},
	ref = $(config.link \|\| '#'+p.name+'link'),
	visible = p.obj && p.obj.is(':visible'),
	above = config.above;

	// fix position according to config
	if (p.obj && visible && ref.length) {
	var parent = ref.parent(),
	win = $(window), pos;

	if (parent.hasClass('dropbutton'))
	ref = parent;

	if (config.above \|\| ref.hasClass('dropbutton')) {
	pos = ref.offset();
	p.obj.css({ left:pos.left+'px', top:(pos.top + (config.above ? -p.obj.height() : ref.outerHeight()))+'px' });
	}
	}

	// add the right classes
	if (p.obj && config.iconized) {
	p.obj.children('ul').addClass('iconized');
	}

	// apply some data-attributes from menu config
	if (p.obj && config.editable)
	p.obj.attr('data-editable', 'true');

	// trigger callback function
	if (typeof config.callback == 'function') {
	config.callback(visible, p);
	}
	}
	}

	function searchmenu(show)
	{
	if (show && rcmail.env.search_mods) {
	var n, all,
	obj = popups['searchmenu'],
	list = $('input:checkbox[name="s_mods[]"]', obj),
	mbox = rcmail.env.mailbox,
	mods = rcmail.env.search_mods,
	scope = rcmail.env.search_scope \|\| 'base';

	if (rcmail.env.task == 'mail') {
	if (scope == 'all')
	mbox = '*';
	mods = mods[mbox] ? mods[mbox] : mods['*'];
	all = 'text';
	$('input:radio[name="s_scope"]').prop('checked', false).filter('#s_scope_'+scope).prop('checked', true);
	}
	else {
	all = '*';
	}

	if (mods[all])
	list.map(function() {
	this.checked = true;
	this.disabled = this.value != all;
	});
	else {
	list.prop('disabled', false).prop('checked', false);
	for (n in mods)
	$('#s_mod_' + n).prop('checked', true);
	}
	}
	}

	function attachmentmenu(elem, event)
	{
	var id = elem.parentNode.id.replace(/^attach/, '');

	$.each(['open', 'download', 'rename'], function() {
	var action = this;
	$('#attachmenu' + action).off('click').attr('onclick', '').click(function(e) {
	return rcmail.command(action + '-attachment', id, this);
	});
	});

	popupconfig.attachmentmenu.link = elem;
	rcmail.command('menu-open', {menu: 'attachmentmenu', id: id}, elem, event);
	}

	function spellmenu(show, p)
	{
	var k, link, li,
	lang = rcmail.spellcheck_lang(),
	ul = $('ul', p.obj);

	if (!ul.length) {
	ul = $('<ul class="toolbarmenu selectable" role="menu">');

	for (k in rcmail.env.spell_langs) {
	li = $('<li role="menuitem">');
	link = $('<a href="#'+k+'" tabindex="0"></a>').text(rcmail.env.spell_langs[k])
	.addClass('active').data('lang', k)
	.on('click keypress', function(e) {
	if (e.type != 'keypress' \|\| rcube_event.get_keycode(e) == 13) {
	rcmail.spellcheck_lang_set($(this).data('lang'));
	rcmail.hide_menu('spellmenu', e);
	return false;
	}
	});

	link.appendTo(li);
	li.appendTo(ul);
	}

	ul.appendTo(p.obj);
	}

	// select current language
	$('li', ul).each(function() {
	var el = $('a', this);
	if (el.data('lang') == lang)
	el.addClass('selected').attr('aria-selected', 'true');
	else if (el.hasClass('selected'))
	el.removeClass('selected').removeAttr('aria-selected');
	});
	}

	// append drop-icon to attachments list item (to invoke attachment menu)
	function attachmentmenu_append(item)
	{
	item = $(item);

	if (!item.children('.drop').length && !item.is('.no-menu')) {
	var label = rcmail.gettext('options'),
	fname = item.find('a.filename'),
	tabindex = fname.attr('tabindex') \|\| 0;

	var button = $('<a>')
	.attr({'class': 'drop skip-content', tabindex: tabindex, 'aria-haspopup': true, title: label})
	.text(label)
	.on('click keypress', function(e) {
	if (e.type != 'keypress' \|\| rcube_event.get_keycode(e) == 13) {
	attachmentmenu(this, e);
	return false;
	}
	});

	if (fname.length)
	button.insertAfter(fname);
	else
	button.appendTo(item);
	}
	}

	/**
	*
	*/
	function show_listoptions(p)
	{
	var $dialog = $('#listoptions');

	// close the dialog
	if ($dialog.is(':visible')) {
	$dialog.dialog('close', p.originalEvent);
	return;
	}

	// set form values
	$('input[name="sort_col"][value="'+rcmail.env.sort_col+'"]').prop('checked', true);
	$('input[name="sort_ord"][value="DESC"]').prop('checked', rcmail.env.sort_order == 'DESC');
	$('input[name="sort_ord"][value="ASC"]').prop('checked', rcmail.env.sort_order != 'DESC');

	$.each(['widescreen', 'desktop', 'list'], function() {
	$('input[name="layout"][value="' + this + '"]').prop('checked', rcmail.env.layout == this);
	});
	$('#listoptions-columns', $dialog)[rcmail.env.layout == 'widescreen' ? 'hide' : 'show']();

	// set checkboxes
	$('input[name="list_col[]"]').each(function() {
	$(this).prop('checked', $.inArray(this.value, rcmail.env.listcols) != -1);
	});

	$dialog.dialog({
	modal: true,
	resizable: false,
	closeOnEscape: true,
	title: null,
	open: function(e) {
	setTimeout(function(){ $dialog.find('a, input:not(:disabled)').not('[aria-disabled=true]').first().focus(); }, 100);
	},
	close: function(e) {
	$dialog.dialog('destroy').hide();
	if (e.originalEvent && rcube_event.is_keyboard(e.originalEvent))
	$('#listmenulink').focus();
	},
	minWidth: 500,
	width: $dialog.width()+25
	}).show();
	}


	/**
	*
	*/
	function save_listoptions(p)
	{
	$('#listoptions').dialog('close');

	if (rcube_event.is_keyboard(p.originalEvent))
	$('#listmenulink').focus();

	var sort = $('input[name="sort_col"]:checked').val(),
	ord = $('input[name="sort_ord"]:checked').val(),
	layout = $('input[name="layout"]:checked').val(),
	cols = $('input[name="list_col[]"]:checked')
	.map(function(){ return this.value; }).get();

	rcmail.set_list_options(cols, sort, ord, rcmail.env.threading, layout);
	}


	/**
	*
	*/
	function set_searchmod(elem)
	{
	var all, m, task = rcmail.env.task,
	mods = rcmail.env.search_mods,
	mbox = rcmail.env.mailbox,
	scope = $('input[name="s_scope"]:checked').val();

	if (scope == 'all')
	mbox = '*';

	if (!mods)
	mods = {};

	if (task == 'mail') {
	if (!mods[mbox])
	mods[mbox] = rcube_clone_object(mods['*']);
	m = mods[mbox];
	all = 'text';
	}
	else { //addressbook
	m = mods;
	all = '*';
	}

	if (!elem.checked)
	delete(m[elem.value]);
	else
	m[elem.value] = 1;

	// mark all fields
	if (elem.value == all) {
	$('input:checkbox[name="s_mods[]"]').map(function() {
	if (this == elem)
	return;

	this.checked = true;
	if (elem.checked) {
	this.disabled = true;
	delete m[this.value];
	}
	else {
	this.disabled = false;
	m[this.value] = 1;
	}
	});
	}

	rcmail.set_searchmods(m);
	}

	function set_searchscope(elem)
	{
	rcmail.set_searchscope(elem.value);
	}

	function push_contactgroup(p)
	{
	// lets the contacts list swipe to the left, nice!
	var table = $('#contacts-table'),
	scroller = table.parent().css('overflow', 'hidden');

	table.clone()
	.css({ position:'absolute', top:'0', left:'0', width:table.width()+'px', 'z-index':10 })
	.appendTo(scroller)
	.animate({ left: -(table.width()+5) + 'px' }, 300, 'swing', function(){
	$(this).remove();
	scroller.css('overflow', 'auto')
	});
	}

	function pop_contactgroup(p)
	{
	// lets the contacts list swipe to the left, nice!
	var table = $('#contacts-table'),
	scroller = table.parent().css('overflow', 'hidden'),
	clone = table.clone().appendTo(scroller);

	table.css({ position:'absolute', top:'0', left:-(table.width()+5) + 'px', width:table.width()+'px', height:table.height()+'px', 'z-index':10 })
	.animate({ left:'0' }, 300, 'linear', function(){
	clone.remove();
	$(this).css({ position:'relative', left:'0', width:'100%', height:'auto', 'z-index':1 });
	scroller.css('overflow', 'auto')
	});
	}

	/**
	* Mail import dialog
	*/
	function import_dialog()
	{
	var content = $('#uploadform'),
	dialog = content.clone().removeClass('popupdialog');

	var save_func = function(e) {
	return rcmail.command('import-messages', $(dialog.find('form')[0]));
	};

	rcmail.simple_dialog(dialog, rcmail.gettext('importmessages'), save_func, {
	button: 'import',
	closeOnEscape: true,
	minWidth: 400
	});
	}

	/**
	*
	*/
	function show_header_row(which, updated)
	{
	var row = $('#compose-' + which);
	if (row.is(':visible'))
	return; // nothing to be done here

	if (compose_headers[which] && !updated)
	$('#_' + which).val(compose_headers[which]);

	row.show();
	$('#' + which + '-link').hide();

	layout_composeview();
	$('input,textarea', row).focus();

	return false;
	}

	/**
	*
	*/
	function hide_header_row(which)
	{
	// copy and clear field value
	var field = $('#_' + which);
	compose_headers[which] = field.val();
	field.val('');

	$('#compose-' + which).hide();
	$('#' + which + '-link').show();
	layout_composeview();
	return false;
	}


	/**
	* Fieldsets-to-tabs converter
	*/
	function init_tabs(elem, current)
	{
	var content = $(elem),
	id = content.get(0).id,
	fs = content.children('fieldset');

	if (!fs.length)
	return;

	if (!id) {
	id = 'rcmtabcontainer';
	content.attr('id', id);
	}

	// create tabs container
	var tabs = $('<ul>').addClass('tabsbar').prependTo(content);

	// convert fildsets into tabs
	fs.each(function(idx) {
	var tab, a, elm = $(this),
	legend = elm.children('legend'),
	tid = id + '-t' + idx;

	// create a tab
	a = $('<a>').text(legend.text()).attr('href', '#' + tid);
	tab = $('<li>').addClass('tablink');

	// remove legend
	legend.remove();

	// link fieldset with tab item
	elm.attr('id', tid);

	// add the tab to container
	tab.append(a).appendTo(tabs);
	});

	// use jquery UI tabs widget to do the interaction and styling
	content.tabs({
	active: current \|\| 0,
	heightStyle: 'content',
	activate: function(e, ui) {resize(); }
	});
	}

	/**
	* Show about page as jquery UI dialog
	*/
	function show_about(elem)
	{
	var frame = $('<iframe>').attr({id: 'aboutframe', src: rcmail.url('settings/about'), frameborder: '0'});
	h = Math.floor($(window).height() * 0.75),
	buttons = {},
	supportln = $('#supportlink');

	if (supportln.length && (env.supporturl = supportln.attr('href')))
	buttons[supportln.html()] = function(e){ env.supporturl.indexOf('mailto:') < 0 ? window.open(env.supporturl) : location.href = env.supporturl };

	frame.dialog({
	modal: true,
	resizable: false,
	closeOnEscape: true,
	title: elem ? elem.title \|\| elem.innerHTML : null,
	close: function() {
	frame.dialog('destroy').remove();
	},
	buttons: buttons,
	width: 640,
	height: h
	}).width(640);
	}
	}


	/**
	* Roundcube Scroller class
	*
	* @deprecated Use treelist widget
	*/
	function rcube_scroller(list, top, bottom)
	{
	var ref = this;

	this.list = $(list);
	this.top = $(top);
	this.bottom = $(bottom);
	this.step_size = 6;
	this.step_time = 20;
	this.delay = 500;

	this.top
	.mouseenter(function() { if (rcmail.drag_active) ref.ts = window.setTimeout(function() { ref.scroll('down'); }, ref.delay); })
	.mouseout(function() { if (ref.ts) window.clearTimeout(ref.ts); });

	this.bottom
	.mouseenter(function() { if (rcmail.drag_active) ref.ts = window.setTimeout(function() { ref.scroll('up'); }, ref.delay); })
	.mouseout(function() { if (ref.ts) window.clearTimeout(ref.ts); });

	this.scroll = function(dir)
	{
	var ref = this, size = this.step_size;

	if (!rcmail.drag_active)
	return;

	if (dir == 'down')
	size *= -1;

	this.list.get(0).scrollTop += size;
	this.ts = window.setTimeout(function() { ref.scroll(dir); }, this.step_time);
	};
	};


	/**
	* Roundcube UI splitter class
	*
	* @constructor
	*/
	function rcube_splitter(p)
	{
	this.p = p;
	this.id = p.id;
	this.horizontal = (p.orientation == 'horizontal' \|\| p.orientation == 'h');
	this.halfsize = (p.size !== undefined ? p.size : 10) / 2;
	this.pos = p.start \|\| 0;
	this.min = p.min \|\| 20;
	this.offset = p.offset \|\| 0;
	this.relative = p.relative ? true : false;
	this.drag_active = false;
	this.render = p.render;
	this.callback = p.callback;

	var me = this;
	rcube_splitter._instances[this.id] = me;

	this.init = function()
	{
	this.p1 = $(this.p.p1);
	this.p2 = $(this.p.p2);
	this.parent = this.p1.parent();

	// check if referenced elements exist, otherwise abort
	if (!this.p1.length \|\| !this.p2.length)
	return;

	// create and position the handle for this splitter
	this.p1pos = this.relative ? this.p1.position() : this.p1.offset();
	this.p2pos = this.relative ? this.p2.position() : this.p2.offset();
	this.handle = $('<div>')
	.attr('id', this.id)
	.attr('unselectable', 'on')
	.attr('role', 'presentation')
	.addClass('splitter ' + (this.horizontal ? 'splitter-h' : 'splitter-v'))
	.appendTo(this.parent)
	.mousedown(onDragStart);

	if (this.horizontal) {
	var top = this.p1pos.top + this.p1.outerHeight();
	this.handle.css({ left:'0px', top:top+'px' });
	}
	else {
	var left = this.p1pos.left + this.p1.outerWidth();
	this.handle.css({ left:left+'px', top:'0px' });
	}

	// listen to window resize on IE
	if (bw.ie)
	$(window).resize(onResize);

	// read saved position from cookie
	var cookie = this.get_cookie();
	if (cookie && !isNaN(cookie)) {
	this.pos = parseFloat(cookie);
	this.resize();
	}
	else if (this.pos) {
	this.resize();
	this.set_cookie();
	}
	};

	/**
	* Set size and position of all DOM objects
	* according to the saved splitter position
	*/
	this.resize = function()
	{
	if (this.horizontal) {
	this.p1.css('height', Math.floor(this.pos - this.p1pos.top - Math.floor(this.halfsize)) + 'px');
	this.p2.css('top', Math.ceil(this.pos + Math.ceil(this.halfsize) + 2) + 'px');
	this.handle.css('top', Math.round(this.pos - this.halfsize + this.offset)+'px');
	if (bw.ie) {
	var new_height = parseInt(this.parent.outerHeight(), 10) - parseInt(this.p2.css('top'), 10);
	this.p2.css('height', (new_height > 0 ? new_height : 0) + 'px');
	}
	}
	else {
	this.p1.css('width', Math.floor(this.pos - this.p1pos.left - Math.floor(this.halfsize)) + 'px');
	this.p2.css('left', Math.ceil(this.pos + Math.ceil(this.halfsize)) + 'px');
	this.handle.css('left', Math.round(this.pos - this.halfsize + this.offset + 3)+'px');
	if (bw.ie) {
	var new_width = parseInt(this.parent.outerWidth(), 10) - parseInt(this.p2.css('left'), 10) ;
	this.p2.css('width', (new_width > 0 ? new_width : 0) + 'px');
	}
	}

	this.p2.resize();
	this.p1.resize();

	// also resize iframe covers
	if (this.drag_active) {
	$('iframe').each(function(i, elem) {
	var pos = $(this).offset();
	$('#iframe-splitter-fix-'+i).css({ top: pos.top+'px', left: pos.left+'px', width:elem.offsetWidth+'px', height: elem.offsetHeight+'px' });
	});
	}

	if (typeof this.render == 'function')
	this.render(this);
	};

	/**
	* Handler for mousedown events
	*/
	function onDragStart(e)
	{
	// disable text selection while dragging the splitter
	if (bw.konq \|\| bw.chrome \|\| bw.safari)
	document.body.style.webkitUserSelect = 'none';

	me.p1pos = me.relative ? me.p1.position() : me.p1.offset();
	me.p2pos = me.relative ? me.p2.position() : me.p2.offset();
	me.drag_active = true;

	// start listening to mousemove events
	$(document).on('mousemove.' + this.id, onDrag).on('mouseup.' + this.id, onDragStop);

	// hack messages list so it will propagate the mouseup event over the list
	if (rcmail.message_list)
	rcmail.message_list.drag_active = true;

	// enable dragging above iframes
	$('iframe').each(function(i, elem) {
	$('<div>')
	.attr('id', 'iframe-splitter-fix-'+i)
	.addClass('iframe-splitter-fix')
	.css({ background: '#fff',
	width: elem.offsetWidth+'px', height: elem.offsetHeight+'px',
	position: 'absolute', opacity: '0.001', zIndex: 1000
	})
	.css($(this).offset())
	.appendTo('body');
	});
	};

	/**
	* Handler for mousemove events
	*/
	function onDrag(e)
	{
	if (!me.drag_active)
	return false;

	// with timing events dragging action is more responsive
	window.clearTimeout(me.ts);
	me.ts = window.setTimeout(function() { onDragAction(e); }, 1);

	return false;
	};

	/**
	* Dragging action (see onDrag())
	*/
	function onDragAction(e)
	{
	var pos = rcube_event.get_mouse_pos(e);

	if (me.relative) {
	var parent = me.parent.offset();
	pos.x -= parent.left;
	pos.y -= parent.top;
	}

	if (me.horizontal) {
	if (((pos.y - me.halfsize) > me.p1pos.top) && ((pos.y + me.halfsize) < (me.p2pos.top + me.p2.outerHeight()))) {
	me.pos = Math.max(me.min, pos.y - Math.max(0, me.offset));
	if (me.pos > me.min)
	me.pos = Math.min(me.pos, me.parent.height() - me.min);

	me.resize();
	}
	}
	else {
	if (((pos.x - me.halfsize) > me.p1pos.left) && ((pos.x + me.halfsize) < (me.p2pos.left + me.p2.outerWidth()))) {
	me.pos = Math.max(me.min, pos.x - Math.max(0, me.offset));
	if (me.pos > me.min)
	me.pos = Math.min(me.pos, me.parent.width() - me.min);

	me.resize();
	}
	}

	me.p1pos = me.relative ? me.p1.position() : me.p1.offset();
	me.p2pos = me.relative ? me.p2.position() : me.p2.offset();
	};

	/**
	* Handler for mouseup events
	*/
	function onDragStop(e)
	{
	// resume the ability to highlight text
	if (bw.konq \|\| bw.chrome \|\| bw.safari)
	document.body.style.webkitUserSelect = 'auto';

	// cancel the listening for drag events
	$(document).off('.' + me.id);
	me.drag_active = false;

	if (rcmail.message_list)
	rcmail.message_list.drag_active = false;

	// remove temp divs
	$('div.iframe-splitter-fix').remove();

	me.set_cookie();

	if (typeof me.callback == 'function')
	me.callback(me);

	return bw.safari ? true : rcube_event.cancel(e);
	};

	/**
	* Handler for window resize events
	*/
	function onResize(e)
	{
	if (me.horizontal) {
	var new_height = parseInt(me.parent.outerHeight(), 10) - parseInt(me.p2[0].style.top, 10);
	me.p2.css('height', (new_height > 0 ? new_height : 0) +'px');
	}
	else {
	var new_width = parseInt(me.parent.outerWidth(), 10) - parseInt(me.p2[0].style.left, 10);
	me.p2.css('width', (new_width > 0 ? new_width : 0) + 'px');
	}
	};

	/**
	* Get saved splitter position from cookie
	*/
	this.get_cookie = function()
	{
	return window.UI ? UI.get_pref(this.id) : null;
	};

	/**
	* Saves splitter position in cookie
	*/
	this.set_cookie = function()
	{
	if (window.UI)
	UI.save_pref(this.id, this.pos);
	};

	} // end class rcube_splitter


	// static getter for splitter instances
	rcube_splitter._instances = {};

	rcube_splitter.get_instance = function(id)
	{
	return rcube_splitter._instances[id];
	};

	// @license-end

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