ui.js
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ui.js
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	/**
	* Roundcube functions for default skin interface
	*
	* Copyright (c) 2013, 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.
	*/


	function rcube_mail_ui()
	{
	var env = {};
	var popups = {};
	var popupconfig = {
	forwardmenu: { editable:1 },
	searchmenu: { editable:1, callback:searchmenu },
	attachmentmenu: { },
	listoptions: { editable:1 },
	dragmenu: { sticky:1 },
	groupmenu: { above:1 },
	mailboxmenu: { above:1 },
	spellmenu: { callback: spellmenu },
	// toggle: #1486823, #1486930
	'attachment-form': { editable:1, above:1, toggle:!bw.ie&&!bw.linux },
	'upload-form': { editable:1, toggle:!bw.ie&&!bw.linux }
	};

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

	// 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.add_popup = add_popup;
	this.set_searchmod = set_searchmod;
	this.show_uploadform = show_uploadform;
	this.show_header_row = show_header_row;
	this.hide_header_row = hide_header_row;
	this.update_quota = update_quota;


	// set minimal mode on small screens (don't wait for document.ready)
	if (window.$ && document.body) {
	var minmode = rcmail.get_cookie('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");
	}
	}


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

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

	/* 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');
	rcmail.set_cookie('minimalmode', ismin?1:0);
	$(window).resize();
	});

	/* mail task */
	if (rcmail.env.task == 'mail') {
	rcmail.addEventListener('menu-open', menu_open);
	rcmail.addEventListener('menu-save', menu_save);
	rcmail.addEventListener('responseafterlist', function(e){ switch_view_mode(rcmail.env.threading ? 'thread' : 'list') });

	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('enable-command', enable_command);
	rcmail.addEventListener('aftershow-headers', function() { layout_messageview(); });
	rcmail.addEventListener('afterhide-headers', function() { layout_messageview(); });
	$('#previewheaderstoggle').click(function(e){ toggle_preview_headers(); return false });

	// add menu link for each attachment
	$('#attachment-list > li').each(function() {
	$(this).append($('<a class="drop">').click(function() { attachmentmenu(this); }));
	});
	}
	else if (rcmail.env.action == 'compose') {
	rcmail.addEventListener('aftertoggle-editor', function(e){
	window.setTimeout(function(){ layout_composeview() }, 200);
	if (e && e.mode)
	$("select[name='editorSelector']").val(e.mode);
	});
	rcmail.addEventListener('aftersend-attachment', show_uploadform);
	rcmail.addEventListener('add-recipient', function(p){ show_header_row(p.field, true); });

	// 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);
	}
	}

	$('#composeoptionstoggle').click(function(){
	$('#composeoptionstoggle').toggleClass('remove');
	$('#composeoptions').toggle();
	layout_composeview();
	return false;
	}).css('cursor', 'pointer');

	// 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); });

	// 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:248, min:170, size:12, render:layout_composeview }).init();
	}
	else if (rcmail.env.action == 'list' \|\| !rcmail.env.action) {
	var previewframe = $('#mailpreviewframe').is(':visible');
	$('#mailpreviewtoggle').addClass(previewframe ? 'enabled' : 'closed').click(function(e){ toggle_preview_pane(e); return false });
	$('#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 });

	mailviewsplit = new rcube_splitter({ id:'mailviewsplitter', p1:'#mailview-top', p2:'#mailview-bottom',
	orientation:'h', relative:true, start:310, min:150, size:12, offset:4 });
	if (previewframe)
	mailviewsplit.init();

	new rcube_scroller('#folderlist-content', '#folderlist-header', '#folderlist-footer');

	rcmail.addEventListener('setquota', update_quota);
	rcmail.addEventListener('enable-command', enable_command);
	rcmail.addEventListener('afterimport-messages', show_uploadform);
	}
	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:226, 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();

	new rcube_scroller('#folderslist-content', '#folderslist-header', '#folderslist-footer');

	rcmail.addEventListener('setquota', update_quota);
	}
	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 == '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') {
	$('<a href="#toggle">▼</a>')
	.addClass('advanced-toggle')
	.appendTo('#preferences-details fieldset.advanced legend');

	$('#preferences-details fieldset.advanced legend').click(function(e){
	var collapsed = $(this).hasClass('collapsed'),
	toggle = $('.advanced-toggle', this).html(collapsed ? '▲' : '▼');
	$(this)
	.toggleClass('collapsed')
	.closest('fieldset').children('.propform').toggle()
	}).addClass('collapsed')
	}
	}
	/* addressbook task */
	else if (rcmail.env.task == 'addressbook') {
	rcmail.addEventListener('afterupload-photo', show_uploadform);
	rcmail.addEventListener('beforepushgroup', push_contactgroup);
	rcmail.addEventListener('beforepopgroup', pop_contactgroup);

	if (rcmail.env.action == '') {
	new rcube_splitter({ id:'addressviewsplitterd', p1:'#addressview-left', p2:'#addressview-right',
	orientation:'v', relative:true, start:226, min:150, size:12, render:resize_leftcol }).init();
	new rcube_splitter({ id:'addressviewsplitter', p1:'#addresslist', p2:'#contacts-box',
	orientation:'v', relative:true, start:286, min:270, size:12 }).init();

	new rcube_scroller('#directorylist-content', '#directorylist-header', '#directorylist-footer');
	}

	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"><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())
	.change(function() {
	var val = $('option:selected', this).text();
	$(this).next().children().text(val);
	});
	});

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

	$(document.body)
	.bind('mouseup', body_mouseup)
	.bind('keyup', function(e){
	if (e.keyCode == 27) {
	for (var id in popups) {
	if (popups[id].is(':visible'))
	show_popup(id, false);
	}
	}
	});

	$('iframe').load(function(e){
	// this = iframe
	try {
	var doc = this.contentDocument ? this.contentDocument : this.contentWindow ? this.contentWindow.document : null;
	$(doc).mouseup(body_mouseup);
	}
	catch (e) {
	// catch possible "Permission denied" error in IE
	};
	})
	.contents().mouseup(body_mouseup);

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

	/**
	* Handler for mouse-up events on the document body.
	* This will close all open popup menus
	*/
	function body_mouseup(e)
	{
	var config, obj, target = e.target;
	if (target.className == 'inner')
	target = e.target.parentNode;
	for (var id in popups) {
	obj = popups[id];
	config = popupconfig[id];
	if (obj.is(':visible')
	&& target.id != id+'link'
	&& !config.toggle
	&& (!config.editable \|\| !target_overlaps(target, obj.get(0)))
	&& (!config.sticky \|\| !rcube_mouse_is_over(e, obj.get(0)))
	) {
	var myid = id+'';
	window.setTimeout(function(){ show_popupmenu(myid, false) }, 10);
	}
	}
	}

	/**
	* 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)
	{
	// show a popup dialog on errors
	if (p.type == 'error' && rcmail.env.task != 'login') {
	if (me.message_timer) {
	window.clearTimeout(me.message_timer);
	}
	if (!me.messagedialog) {
	me.messagedialog = $('<div>').addClass('popupdialog').hide();
	}

	var msg = p.message,
	pos = $(p.object).offset();
	pos.top -= (rcmail.env.task == 'login' ? 20 : 160);

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

	me.messagedialog.html(msg)
	.dialog({
	resizable: false,
	closeOnEscape: true,
	dialogClass: 'popupmessage ' + p.type,
	title: env.errortitle,
	close: function() {
	me.messagedialog.dialog('destroy').hide();
	},
	position: ['center', pos.top],
	hide: { effect:'drop', direction:'down' },
	width: 420,
	minHeight: 90
	}).show();

	me.message_timer = window.setTimeout(function(){ me.messagedialog.dialog('close'); }, Math.max(2000, p.timeout / 2));
	}
	}


	/**
	* 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();
	$('div.leftcol').css('margin-right', '0');
	}
	}


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


	function resize_leftcol(splitter)
	{
	// STUB
	}

	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,

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

	w = body.parent().width() - 5;
	h = body.parent().height() - 16;
	body.width(w).height(h);

	$('#composebody_tbl').width((w+8)+'px').height('').css('margin-top', '1px');
	$('#composebody_ifr').width((w+8)+'px').height((h-40)+'px');
	$('#googie_edit_layer').height(h+'px');
	// $('#composebodycontainer')[(btns ? 'addClass' : 'removeClass')]('buttons');
	// $('#composeformbuttons')[(btns ? 'show' : 'hide')]();

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


	function update_quota(p)
	{
	var 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;

	$('#quotadisplay').css('background-position', '0 -'+y+'px');
	}


	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);
	}
	}


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

	var visible = show_popupmenu(popup, show),
	config = popupconfig[popup];
	if (typeof config.callback == 'function')
	config.callback(visible);
	}

	/**
	* Show/hide a specific popup menu
	*/
	function show_popupmenu(popup, show)
	{
	var obj = popups[popup],
	config = popupconfig[popup],
	ref = $(config.link ? config.link : '#'+popup+'link'),
	above = config.above;

	if (!obj) {
	obj = popups[popup] = $('#'+popup);
	obj.appendTo(document.body); // move them to top for proper absolute positioning
	}

	if (!obj \|\| !obj.length)
	return false;

	if (typeof show == 'undefined')
	show = obj.is(':visible') ? false : true;
	else if (config.toggle && show && obj.is(':visible'))
	show = false;

	if (show && ref.length) {
	var parent = ref.parent(),
	win = $(window),
	pos;

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

	pos = ref.offset();
	ref.offsetHeight = ref.outerHeight();
	if (!above && pos.top + ref.offsetHeight + obj.height() > win.height())
	above = true;
	if (pos.left + obj.width() > win.width())
	pos.left = win.width() - obj.width() - 12;

	obj.css({ left:pos.left, top:(pos.top + (above ? -obj.height() : ref.offsetHeight)) });
	}

	obj[show?'show':'hide']();

	// hide drop-down elements on buggy browsers
	if (bw.ie6 && config.overlap) {
	$('select').css('visibility', show?'hidden':'inherit');
	$('select', obj).css('visibility', 'inherit');
	}

	return show;
	}

	/**
	*
	*/
	function target_overlaps(target, elem)
	{
	while (target.parentNode) {
	if (target.parentNode == elem)
	return true;
	target = target.parentNode;
	}
	return false;
	}


	/**
	* Show/hide the preview pane
	*/
	function toggle_preview_pane(e)
	{
	var button = $(e.target),
	frame = $('#mailpreviewframe'),
	visible = !frame.is(':visible'),
	splitter = mailviewsplit.pos \|\| parseInt(rcmail.get_cookie('mailviewsplitter') \|\| 320),
	topstyles, bottomstyles, uid;

	frame.toggle();
	button.removeClass().addClass(visible ? 'enabled' : 'closed');

	if (visible) {
	$('#mailview-top').removeClass('fullheight').css({ bottom:'auto' });
	$('#mailview-bottom').css({ height:'auto' });

	rcmail.env.contentframe = 'messagecontframe';
	if (uid = rcmail.message_list.get_single_selection())
	rcmail.show_message(uid, false, true);

	// let the splitter set the correct size and position
	if (mailviewsplit.handle) {
	mailviewsplit.handle.show();
	mailviewsplit.resize();
	}
	else
	mailviewsplit.init();
	}
	else {
	rcmail.env.contentframe = null;
	rcmail.show_contentframe(false);

	$('#mailview-top').addClass('fullheight').css({ height:'auto', bottom:'28px' });
	$('#mailview-bottom').css({ top:'auto', height:'26px' });

	if (mailviewsplit.handle)
	mailviewsplit.handle.hide();
	}

	if (rcmail.message_list) {
	if (visible && uid)
	rcmail.message_list.scrollto(uid);
	rcmail.message_list.resize();
	}

	rcmail.command('save-pref', { name:'preview_pane', value:(visible?1:0) });
	}


	/**
	* 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')
	else
	button.attr('href', '#details').removeClass('remove').addClass('add')
	}


	/**
	*
	*/
	function switch_view_mode(mode)
	{
	if (rcmail.env.threading != (mode == 'thread'))
	rcmail.set_list_options(null, undefined, undefined, mode == 'thread' ? 1 : 0);

	$('#maillistmode, #mailthreadmode').removeClass('selected');
	$('#mail'+mode+'mode').addClass('selected');
	}


	/** popup callbacks **/

	function menu_open(p)
	{
	if (p && p.props && p.props.menu == 'attachmentmenu')
	show_popupmenu('attachmentmenu');
	else
	show_listoptions();
	}

	function menu_save(prop)
	{
	save_listoptions();
	}

	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;

	if (rcmail.env.task == 'mail') {
	mods = mods[mbox] ? mods[mbox] : mods['*'];
	all = 'text';
	}
	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)
	{
	var id = elem.parentNode.id.replace(/^attach/, '');

	$('#attachmenuopen').unbind('click').attr('onclick', '').click(function(e) {
	return rcmail.command('open-attachment', id, this);
	});

	$('#attachmenudownload').unbind('click').attr('onclick', '').click(function() {
	rcmail.command('download-attachment', id, this);
	});

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

	function spellmenu(show)
	{
	var link, li,
	lang = rcmail.spellcheck_lang(),
	menu = popups.spellmenu,
	ul = $('ul', menu);

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

	for (i in rcmail.env.spell_langs) {
	li = $('<li>');
	link = $('<a href="#"></a>').text(rcmail.env.spell_langs[i])
	.addClass('active').data('lang', i)
	.click(function() {
	rcmail.spellcheck_lang_set($(this).data('lang'));
	});

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

	ul.appendTo(menu);
	}

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


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

	// close the dialog
	if ($dialog.is(':visible')) {
	$dialog.dialog('close');
	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');

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

	$dialog.dialog({
	modal: true,
	resizable: false,
	closeOnEscape: true,
	title: null,
	close: function() {
	$dialog.dialog('destroy').hide();
	},
	minWidth: 500,
	width: $dialog.width()+25
	}).show();
	}


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

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

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


	/**
	*
	*/
	function set_searchmod(elem)
	{
	var all, m, task = rcmail.env.task,
	mods = rcmail.env.search_mods,
	mbox = rcmail.env.mailbox;

	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)
	return;

	$('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;
	}
	});
	}

	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')
	});
	}

	function show_uploadform()
	{
	var $dialog = $('#upload-dialog');

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

	// add icons to clone file input field
	if (rcmail.env.action == 'compose' && !$dialog.data('extended')) {
	$('<a>')
	.addClass('iconlink add')
	.attr('href', '#add')
	.html('Add')
	.appendTo($('input[type="file"]', $dialog).parent())
	.click(add_uploadfile);
	$dialog.data('extended', true);
	}

	$dialog.dialog({
	modal: true,
	resizable: false,
	closeOnEscape: true,
	title: $dialog.attr('title'),
	close: function() {
	try { $('#upload-dialog form').get(0).reset(); }
	catch(e){ } // ignore errors

	$dialog.dialog('destroy').hide();
	$('div.addline', $dialog).remove();
	},
	width: 480
	}).show();

	if (!document.all)
	$('input[type=file]', $dialog).first().click();
	}

	function add_uploadfile(e)
	{
	var div = $(this).parent();
	var clone = div.clone().addClass('addline').insertAfter(div);
	clone.children('.iconlink').click(add_uploadfile);
	clone.children('input').val('');

	if (!document.all)
	$('input[type=file]', clone).click();
	}


	/**
	*
	*/
	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();
	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);
	}

	// first hide not selected tabs
	current = current \|\| 0;
	fs.each(function(idx) { if (idx != current) $(this).hide(); });

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

	// convert fildsets into tabs
	fs.each(function(idx) {
	var tab, a, elm = $(this), legend = elm.children('legend');

	// create a tab
	a = $('<a>').text(legend.text()).attr('href', '#');
	tab = $('<span>').attr({'id': 'tab'+idx, 'class': 'tablink'})
	.click(function() { show_tab(id, idx); return false })

	// remove legend
	legend.remove();
	// style fieldset
	elm.addClass('tab');
	// style selected tab
	if (idx == current)
	tab.addClass('selected');

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

	function show_tab(id, index)
	{
	var fs = $('#'+id).children('fieldset');

	fs.each(function(idx) {
	// Show/hide fieldset (tab content)
	$(this)[index==idx ? 'show' : 'hide']();
	// Select/unselect tab
	$('#tab'+idx).toggleClass('selected', idx==index);
	});

	resize();
	}

	/**
	* Show about page as jquery UI dialog
	*/
	function show_about(elem)
	{
	var frame = $('<iframe>').attr('id', 'aboutframe')
	.attr('src', rcmail.url('settings/about'))
	.attr('frameborder', '0')
	.appendTo(document.body);

	var h = Math.floor($(window).height() * 0.75);
	var buttons = {};
	var 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
	*/
	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);

	// 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')
	.addClass('splitter ' + (this.horizontal ? 'splitter-h' : 'splitter-v'))
	.appendTo(this.p1.parent())
	.bind('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 = rcmail.get_cookie(this.id);
	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 - this.halfsize) + 'px');
	this.p2.css('top', Math.ceil(this.pos + 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.p2.parent().outerHeight(), 10) - parseInt(this.p2.css('top'), 10) - (bw.ie8 ? 2 : 0);
	this.p2.css('height', (new_height > 0 ? new_height : 0) + 'px');
	}
	}
	else {
	this.p1.css('width', Math.floor(this.pos - this.p1pos.left - this.halfsize) + 'px');
	this.p2.css('left', Math.ceil(this.pos + 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.p2.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).bind('mousemove.'+this.id, onDrag).bind('mouseup.'+this.id, onDragStop);

	// 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;

	var pos = rcube_event.get_mouse_pos(e);

	if (me.relative) {
	var parent = me.p1.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 - me.offset);
	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 - me.offset);
	me.resize();
	}
	}

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

	/**
	* 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).unbind('.'+me.id);
	me.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.p2.parent().outerHeight(), 10) - parseInt(me.p2[0].style.top, 10) - (bw.ie8 ? 2 : 0);
	me.p2.css('height', (new_height > 0 ? new_height : 0) +'px');
	}
	else {
	var new_width = parseInt(me.p2.parent().outerWidth(), 10) - parseInt(me.p2[0].style.left, 10);
	me.p2.css('width', (new_width > 0 ? new_width : 0) + 'px');
	}
	};

	/**
	* Saves splitter position in cookie
	*/
	this.set_cookie = function()
	{
	var exp = new Date();
	exp.setYear(exp.getFullYear() + 1);
	rcmail.set_cookie(this.id, this.pos, exp);
	};

	} // end class rcube_splitter


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

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

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