functions.js
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functions.js
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	/**
	* Roundcube functions for default skin interface
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (c) 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.
	*/

	/**
	* Settings
	*/

	function rcube_init_settings_tabs()
	{
	var el, cl, container = $('#tabsbar'),
	last_tab = $('span', container).last(),
	tab = '#settingstabpreferences',
	action = window.rcmail && rcmail.env.action ? rcmail.env.action : null;

	// move About tab to the end
	if (last_tab && last_tab.attr('id') != 'settingstababout' && (el = $('#settingstababout'))) {
	cl = el.clone(true);
	el.remove();
	last_tab.after(cl);
	}

	// get selected tab
	if (action)
	tab = '#settingstab' + (action.indexOf('identity')>0 ? 'identities' : action.replace(/\./g, ''));

	$(tab).addClass('tablink-selected');
	$('a', tab).removeAttr('onclick').click(function() { return false; });
	}

	// Fieldsets-to-tabs converter
	// Warning: don't place "caller" <script> inside page element (id)
	function rcube_init_tabs(id, current)
	{
	var content = $('#'+id),
	fs = content.children('fieldset');

	if (!fs.length)
	return;

	current = current ? current : 0;

	// create tabs container (if not exists)
	var tabs = content.find('.tabsbar');
	if (!tabs.length)
	tabs = $('<div>').addClass('tabsbar').appendTo(content);

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

	// skip invisible or already initialized fieldsets
	if (!elm.is(':visible') \|\| elm.hasClass('tabbed'))
	return;

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

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

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

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

	function rcube_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('tablink-selected', idx==index);
	});
	}

	/**
	* Mail UI
	*/

	function rcube_mail_ui()
	{
	this.popups = {
	markmenu: {id:'markmessagemenu'},
	replyallmenu: {id:'replyallmenu'},
	forwardmenu: {id:'forwardmenu', editable:1},
	searchmenu: {id:'searchmenu', editable:1},
	messagemenu: {id:'messagemenu'},
	attachmentmenu: {id:'attachmentmenu'},
	dragmenu: {id:'dragmenu', sticky:1},
	groupmenu: {id:'groupoptionsmenu', above:1},
	mailboxmenu: {id:'mailboxoptionsmenu', above:1},
	composemenu: {id:'composeoptionsmenu', editable:1, overlap:1},
	spellmenu: {id:'spellmenu'},
	responsesmenu: {id:'responsesmenu'},
	// toggle: #1486823, #1486930
	uploadmenu: {id:'attachment-form', editable:1, above:1, toggle:!bw.ie&&!bw.linux },
	uploadform: {id:'upload-form', editable:1, toggle:!bw.ie&&!bw.linux }
	};

	var obj;
	for (var k in this.popups) {
	obj = $('#'+this.popups[k].id)
	if (obj.length)
	this.popups[k].obj = obj;
	else {
	delete this.popups[k];
	}
	}
	}

	rcube_mail_ui.prototype = {

	show_popup: function(popup, show, config)
	{
	var obj;
	// auto-register menu object
	if (!this.popups[popup] && (obj = $('#'+popup)) && obj.length)
	this.popups[popup] = $.extend(config, {id: popup, obj: obj});

	if (typeof this[popup] == 'function')
	return this[popup](show);
	else
	return this.show_popupmenu(popup, show);
	},

	show_popupmenu: function(popup, show)
	{
	var obj = this.popups[popup].obj,
	above = this.popups[popup].above,
	ref = $(this.popups[popup].link ? this.popups[popup].link : rcube_find_object(popup+'link'));

	if (typeof show == 'undefined')
	show = obj.is(':visible') ? false : true;
	else if (this.popups[popup].toggle && show && this.popups[popup].obj.is(':visible') )
	show = false;

	if (show && ref.length) {
	var parent = ref.parent(),
	win = $(window),
	pos = parent.hasClass('dropbutton') ? parent.offset() : ref.offset();

	if (!above && pos.top + ref.height() + obj.height() > win.height())
	above = true;
	if (pos.left + obj.width() > win.width())
	pos.left = win.width() - obj.width() - 30;

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

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

	dragmenu: function(show)
	{
	this.popups.dragmenu.obj[show?'show':'hide']();
	},

	forwardmenu: function(show)
	{
	$("input[name='forwardtype'][value="+(rcmail.env.forward_attachment ? 1 : 0)+"]", this.popups.forwardmenu.obj)
	.prop('checked', true);
	this.show_popupmenu('forwardmenu', show);
	},

	uploadmenu: function(show)
	{
	if (typeof show == 'object') // called as event handler
	show = false;

	// clear upload form
	if (!show) {
	try { $('#attachment-form form')[0].reset(); }
	catch(e){} // ignore errors
	}

	if (rcmail.mailvelope_editor)
	return;

	this.show_popupmenu('uploadmenu', show);

	if (!document.all && this.popups.uploadmenu.obj.is(':visible'))
	$('#attachment-form input[type=file]').click();
	},

	searchmenu: function(show)
	{
	var obj = this.popups.searchmenu.obj,
	ref = rcube_find_object('searchmenulink');

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

	if (show && ref) {
	var pos = $(ref).offset();
	obj.css({left:pos.left, top:(pos.top + ref.offsetHeight + 2)});

	if (rcmail.env.search_mods) {
	var n, all,
	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') {
	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);
	}
	}
	}
	obj[show?'show':'hide']();
	},

	set_searchmod: function(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 (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[]"]').not(elem).map(function() {
	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);
	},

	show_listmenu: function(p)
	{
	var self = this, buttons = {}, $dialog = $('#listmenu');

	// 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');
	$('input[name="view"][value="thread"]').prop('checked', rcmail.env.threading ? true : false);
	$('input[name="view"][value="list"]').prop('checked', rcmail.env.threading ? false : true);

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

	$.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']();

	buttons[rcmail.gettext('save')] = function(e) {
	$dialog.dialog('close', e);
	self.save_listmenu();
	};

	$dialog.dialog({
	modal: true,
	resizable: false,
	closeOnEscape: true,
	title: null,
	open: function(e) {
	var maxheight = 0;
	$('#listmenu fieldset').each(function() {
	var height = $(this).height();
	if (height > maxheight) {
	maxheight = height;
	}
	}).css("min-height", maxheight+"px").height(maxheight);

	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();
	},
	buttons: buttons,
	minWidth: 500,
	width: $dialog.width()+20
	}).show();
	},

	save_listmenu: function()
	{
	var sort = $('input[name="sort_col"]:checked').val(),
	ord = $('input[name="sort_ord"]:checked').val(),
	thread = $('input[name="view"]: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, thread == 'thread' ? 1 : 0, layout);
	},

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

	if (!ul.length) {
	ul = $('<ul>');

	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');
	});

	this.show_popupmenu('spellmenu', show);
	},

	show_attachmentmenu: function(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);
	});
	});

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

	menu_open: function(p)
	{
	if (p && p.name == 'messagelistmenu')
	this.show_listmenu();
	},

	body_mouseup: function(e)
	{
	var target = e.target; ref = this;

	$.each(this.popups, function(i, popup) {
	if (popup.obj.is(':visible') && target != rcube_find_object(i + 'link')
	&& !popup.toggle
	&& target != popup.obj.get(0) // check if scroll bar was clicked (#1489832)
	&& (!popup.editable \|\| !ref.target_overlaps(target, popup.id))
	&& (!popup.sticky \|\| !rcube_mouse_is_over(e, rcube_find_object(popup.id)))
	&& !$(target).is('.folder-selector-link') && !$(target).children('.folder-selector-link').length
	) {
	window.setTimeout('rcmail_ui.show_popup("'+i+'",false);', 50);
	}
	});
	},

	target_overlaps: function (target, elementid)
	{
	var element = rcube_find_object(elementid);
	while (target.parentNode) {
	if (target.parentNode == element)
	return true;
	target = target.parentNode;
	}
	return false;
	},

	body_keydown: function(e)
	{
	if (e.keyCode == 27) {
	for (var k in this.popups) {
	if (this.popups[k].obj.is(':visible'))
	this.show_popup(k, false);
	}
	}
	},

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

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

	if (!this.mailviewsplitv) {
	this.mailviewsplitv = new rcube_splitter({id:'mailviewsplitterv', p1: 'mailleftcontainer', p2: 'mailrightcontainer',
	orientation: 'v', relative: true, start: 165, callback: rcube_render_mailboxlist });
	this.mailviewsplitv.init();
	}

	$('#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: 400});
	bottom.css({top: 0, left: 410, height: 'auto'}).show();
	if (!this.mailviewsplit2) {
	this.mailviewsplit2 = new rcube_splitter({id:'mailviewsplitter2', p1: 'mailcontframe', p2: 'mailpreviewframe',
	orientation: 'v', relative: true, start: 405});
	this.mailviewsplit2.init();
	}
	else
	this.mailviewsplit2.resize();
	}
	else if (layout == 'desktop') {
	top.css({height: 200, width: '100%'});
	bottom.css({left: 0, top: 210, height: 'auto'}).show();
	if (!this.mailviewsplit) {
	this.mailviewsplit = new rcube_splitter({id:'mailviewsplitter', p1: 'mailcontframe', p2: 'mailpreviewframe',
	orientation: 'h', relative: true, start: 205});
	this.mailviewsplit.init();
	}
	else
	this.mailviewsplit.resize();
	}
	else { // layout == 'list'
	top.css({height: 'auto', width: '100%'});
	bottom.hide();
	}

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


	/* Message composing */
	init_compose_form: function()
	{
	var f, v, field, fields = ['cc', 'bcc', 'replyto', 'followupto'],
	div = document.getElementById('compose-div'),
	headers_div = document.getElementById('compose-headers-div');

	// Show input elements with non-empty value
	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) rcmail_ui.show_header_form(e.data.v); });
	if (field.val() != '')
	rcmail_ui.show_header_form(v);
	}
	}

	// prevent from form data loss when pressing ESC key in IE
	if (bw.ie) {
	var form = rcube_find_object('form');
	form.onkeydown = function (e) {
	if (rcube_event.get_keycode(e) == 27)
	rcube_event.cancel(e);
	};
	}

	$(window).resize(function() {
	rcmail_ui.resize_compose_body();
	});

	$('#compose-container').resize(function() {
	rcmail_ui.resize_compose_body();
	});

	div.style.top = (parseInt(headers_div.offsetHeight, 10) + 3) + 'px';
	$(window).resize();

	// fixes contacts-table position when there's more than one addressbook
	$('#contacts-table').css('top', $('#directorylist').height() + 24 + 'px');

	// contacts search submit
	$('#quicksearchbox').keydown(function(e) {
	if (rcube_event.get_keycode(e) == 13)
	rcmail.command('search');
	});
	},

	resize_compose_body: function()
	{
	var div = $('#compose-div .boxlistcontent'),
	w = div.width() - 6,
	h = div.height() - 2,
	x = bw.ie \|\| bw.opera ? 4 : 0;

	$('#compose-body_ifr').width(w + 6).height(h - 1 - $('div.tox-toolbar').height());
	$('#compose-body').width(w-x).height(h);
	$('#googie_edit_layer').width(w).height(h);
	},

	resize_compose_body_ev: function()
	{
	window.setTimeout(function(){rcmail_ui.resize_compose_body();}, 100);
	},

	show_header_form: function(id)
	{
	var row, s,
	link = document.getElementById(id + '-link');

	if ((s = this.next_sibling(link)))
	s.style.display = 'none';
	else if ((s = this.prev_sibling(link)))
	s.style.display = 'none';

	link.style.display = 'none';

	if ((row = document.getElementById('compose-' + id))) {
	var div = document.getElementById('compose-div'),
	headers_div = document.getElementById('compose-headers-div');
	$(row).show();
	div.style.top = (parseInt(headers_div.offsetHeight, 10) + 3) + 'px';
	this.resize_compose_body();
	}

	return false;
	},

	hide_header_form: function(id)
	{
	var row, ns,
	link = document.getElementById(id + '-link'),
	parent = link.parentNode,
	links = parent.getElementsByTagName('a');

	link.style.display = '';

	for (var i=0; i<links.length; i++)
	if (links[i].style.display != 'none')
	for (var j=i+1; j<links.length; j++)
	if (links[j].style.display != 'none')
	if ((ns = this.next_sibling(links[i]))) {
	ns.style.display = '';
	break;
	}

	document.getElementById('_' + id).value = '';

	if ((row = document.getElementById('compose-' + id))) {
	var div = document.getElementById('compose-div'),
	headers_div = document.getElementById('compose-headers-div');
	row.style.display = 'none';
	div.style.top = (parseInt(headers_div.offsetHeight, 10) + 1) + 'px';
	this.resize_compose_body();
	}

	return false;
	},

	next_sibling: function(elm)
	{
	var ns = elm.nextSibling;
	while (ns && ns.nodeType == 3)
	ns = ns.nextSibling;
	return ns;
	},

	prev_sibling: function(elm)
	{
	var ps = elm.previousSibling;
	while (ps && ps.nodeType == 3)
	ps = ps.previousSibling;
	return ps;
	},

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

	folder_search_init: function(container)
	{
	// animation to unfold list search box
	$('.boxtitle a.search', container).click(function(e) {
	var title = $('.boxtitle', container),
	box = $('.listsearchbox', container),
	dir = box.is(':visible') ? -1 : 1,
	height = 24 + ($('select', box).length ? 24 : 0);

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

	return false;
	});
	}

	};

	/**
	* Roundcube generic layer (floating box) class
	*
	* @constructor
	*/
	function rcube_layer(id, attributes)
	{
	this.name = id;

	// create a new layer in the current document
	this.create = function(arg)
	{
	var l = (arg.x) ? arg.x : 0,
	t = (arg.y) ? arg.y : 0,
	w = arg.width,
	h = arg.height,
	z = arg.zindex,
	vis = arg.vis,
	parent = arg.parent,
	obj = document.createElement('DIV');

	obj.id = this.name;
	obj.style.position = 'absolute';
	obj.style.visibility = (vis) ? (vis==2) ? 'inherit' : 'visible' : 'hidden';
	obj.style.left = l+'px';
	obj.style.top = t+'px';
	if (w)
	obj.style.width = w.toString().match(/\%$/) ? w : w+'px';
	if (h)
	obj.style.height = h.toString().match(/\%$/) ? h : h+'px';
	if (z)
	obj.style.zIndex = z;

	if (parent)
	parent.appendChild(obj);
	else
	document.body.appendChild(obj);

	this.elm = obj;
	};

	// create new layer
	if (attributes != null) {
	this.create(attributes);
	this.name = this.elm.id;
	}
	else // just refer to the object
	this.elm = document.getElementById(id);

	if (!this.elm)
	return false;


	// ******* layer object properties *******

	this.css = this.elm.style;
	this.event = this.elm;
	this.width = this.elm.offsetWidth;
	this.height = this.elm.offsetHeight;
	this.x = parseInt(this.elm.offsetLeft);
	this.y = parseInt(this.elm.offsetTop);
	this.visible = (this.css.visibility=='visible' \|\| this.css.visibility=='show' \|\| this.css.visibility=='inherit') ? true : false;


	// ******* layer object methods *******

	// move the layer to a specific position
	this.move = function(x, y)
	{
	this.x = x;
	this.y = y;
	this.css.left = Math.round(this.x)+'px';
	this.css.top = Math.round(this.y)+'px';
	};

	// change the layers width and height
	this.resize = function(w,h)
	{
	this.css.width = w+'px';
	this.css.height = h+'px';
	this.width = w;
	this.height = h;
	};

	// show or hide the layer
	this.show = function(a)
	{
	if(a == 1) {
	this.css.visibility = 'visible';
	this.visible = true;
	}
	else if(a == 2) {
	this.css.visibility = 'inherit';
	this.visible = true;
	}
	else {
	this.css.visibility = 'hidden';
	this.visible = false;
	}
	};

	// write new content into a Layer
	this.write = function(cont)
	{
	this.elm.innerHTML = cont;
	};

	};

	/**
	* Scroller
	*
	* @deprecated Use treelist widget
	*/
	function rcmail_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() { ref.ts = window.setTimeout(function() { ref.scroll('down'); }, ref.delay); })
	.mouseout(function() { if (ref.ts) window.clearTimeout(ref.ts); });

	this.bottom
	.mouseenter(function() { 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);
	};
	};

	// Abbreviate mailbox names to fit width of the container
	function rcube_render_mailboxlist()
	{
	var list = $('#mailboxlist > li > a, #mailboxlist ul:visible > li > a');

	// it's too slow with really big number of folders
	if (list.length > 100)
	return;

	list.each(function() {
	var elem = $(this),
	text = elem.data('text');

	if (!text) {
	text = elem.text().replace(/\s+$[0-9]+$$/, '');
	elem.data('text', text);
	}

	if (text.length < 6)
	return;

	var abbrev = fit_string_to_size(text, elem, elem.width() - elem.children('span.unreadcount').width() - 16);
	if (abbrev != text)
	elem.attr('title', text);
	elem.contents().filter(function(){ return (this.nodeType == 3); }).get(0).data = abbrev;
	});
	};

	// inspired by https://gist.github.com/24261/7fdb113f1e26111bd78c0c6fe515f6c0bf418af5
	function fit_string_to_size(str, elem, len)
	{
	var w, span, $span, result = str, ellip = '...';

	if (!rcmail.env.tmp_span) {
	// it should be appended to elem to use the same css style
	// but for performance reasons we'll append it to body (once)
	span = $('<b>').css({visibility: 'hidden', padding: '0px',
	'font-family': elem.css('font-family'),
	'font-size': elem.css('font-size')})
	.appendTo($('body', document)).get(0);
	rcmail.env.tmp_span = span;
	}
	else {
	span = rcmail.env.tmp_span;
	}

	$span = $(span);
	$span.text(result);

	// on first run, check if string fits into the length already.
	w = span.offsetWidth;
	if (w > len) {
	var cut = Math.max(1, Math.floor(str.length * ((w - len) / w) / 2)),
	mid = Math.floor(str.length / 2),
	offLeft = mid,
	offRight = mid;

	while (true) {
	offLeft = mid - cut;
	offRight = mid + cut;
	$span.text(str.substring(0,offLeft) + ellip + str.substring(offRight));

	// break loop if string fits size
	if (offLeft < 3 \|\| span.offsetWidth)
	break;

	cut++;
	}

	// build resulting string
	result = str.substring(0,offLeft) + ellip + str.substring(offRight);
	}

	return result;
	};

	function update_quota(data)
	{
	percent_indicator(rcmail.gui_objects.quotadisplay, data);

	if (data.table) {
	var menu = $('#quotamenu');

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

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

	// percent (quota) indicator
	function percent_indicator(obj, data)
	{
	if (!data \|\| !obj)
	return false;

	var limit_high = 80,
	limit_mid = 55,
	width = data.width ? data.width : rcmail.env.indicator_width ? rcmail.env.indicator_width : 100,
	height = data.height ? data.height : rcmail.env.indicator_height ? rcmail.env.indicator_height : 14,
	quota = data.percent ? Math.abs(parseInt(data.percent)) : 0,
	quota_width = parseInt(quota / 100 * width),
	pos = $(obj).position();

	// workarounds for Opera and Webkit bugs
	pos.top = Math.max(0, pos.top);
	pos.left = Math.max(0, pos.left);

	rcmail.env.indicator_width = width;
	rcmail.env.indicator_height = height;

	// overlimit
	if (quota_width > width) {
	quota_width = width;
	quota = 100;
	}

	if (data.title)
	data.title = rcmail.get_label('quota') + ': ' + data.title;

	// main div
	var main = $('<div>');
	main.css({position: 'absolute', top: pos.top, left: pos.left,
	width: width + 'px', height: height + 'px', zIndex: 100, lineHeight: height + 'px'})
	.attr('title', data.title).addClass('quota_text').html(quota + '%');
	// used bar
	var bar1 = $('<div>');
	bar1.css({position: 'absolute', top: pos.top + 1, left: pos.left + 1,
	width: quota_width + 'px', height: height + 'px', zIndex: 99});
	// background
	var bar2 = $('<div>');
	bar2.css({position: 'absolute', top: pos.top + 1, left: pos.left + 1,
	width: width + 'px', height: height + 'px', zIndex: 98})
	.addClass('quota_bg');

	if (quota >= limit_high) {
	main.addClass(' quota_text_high');
	bar1.addClass('quota_high');
	}
	else if(quota >= limit_mid) {
	main.addClass(' quota_text_mid');
	bar1.addClass('quota_mid');
	}
	else {
	main.addClass(' quota_text_low');
	bar1.addClass('quota_low');
	}

	// replace quota image
	$(obj).html('').append(bar1).append(bar2).append(main);
	// update #quotaimg title
	$('#quotaimg').attr('title', data.title);
	};

	function attachment_menu_append(item)
	{
	if ($(item).is('.no-menu'))
	return;

	$(item).append(
	$('<a class="drop"></a>').on('click keypress', function(e) {
	if (e.type != 'keypress' \|\| e.which == 13) {
	rcmail_ui.show_attachmentmenu(this, e);
	return false;
	}
	})
	);
	};

	// Optional parameters used by TinyMCE
	var rcmail_editor_settings = {};

	var rcmail_ui;

	function rcube_init_mail_ui()
	{
	rcmail_ui = new rcube_mail_ui();

	$(document.body).mouseup(function(e) { rcmail_ui.body_mouseup(e); })
	.mousedown(function(e) { rcmail_ui.body_keydown(e); });

	rcmail.addEventListener('init', function() {
	if (rcmail.env.quota_content)
	update_quota(rcmail.env.quota_content);
	rcmail.addEventListener('setquota', update_quota);

	rcube_webmail.set_iframe_events({mouseup: function(e) { return rcmail_ui.body_mouseup(e); }});

	if (rcmail.env.task == 'mail') {
	rcmail.addEventListener('enable-command', 'enable_command', rcmail_ui)
	.addEventListener('menu-open', 'menu_open', rcmail_ui)
	.addEventListener('aftersend-attachment', 'uploadmenu', rcmail_ui)
	.addEventListener('aftertoggle-editor', 'resize_compose_body_ev', rcmail_ui)
	.addEventListener('afterbounce', function(){ rcmail_ui.show_popup('forwardmenu', false); })
	.gui_object('dragmenu', 'dragmenu');

	if (rcmail.gui_objects.mailboxlist) {
	rcmail.treelist.addEventListener('expand', rcube_render_mailboxlist);
	rcmail.addEventListener('responseaftermark', rcube_render_mailboxlist)
	.addEventListener('responseaftergetunread', rcube_render_mailboxlist)
	.addEventListener('responseaftercheck-recent', rcube_render_mailboxlist)
	.addEventListener('responseafterrefresh', rcube_render_mailboxlist)
	.addEventListener('afterimport-messages', function(){ rcmail_ui.show_popup('uploadform', false); });
	}

	rcmail.init_pagejumper('#pagejumper');

	// fix message list header on window resize (#1490213)
	if (bw.ie && rcmail.message_list)
	$(window).resize(function() {
	setTimeout(function() { rcmail.message_list.resize(); }, 10);
	});

	if (rcmail.env.action == 'list' \|\| !rcmail.env.action) {
	rcmail.addEventListener('layout-change', 'set_layout', rcmail_ui);
	rcmail_ui.set_layout();
	}
	else if (rcmail.env.action == 'compose') {
	rcmail_ui.init_compose_form();
	rcmail.addEventListener('compose-encrypted', function(e) {
	$("a.button.encrypt")[(e.active ? 'addClass' : 'removeClass')]('selected');
	$("select[name='editorSelector']").prop('disabled', e.active);
	$('a.button.attach, a.button.responses, a.button.attach, #uploadmenulink')[(e.active ? 'addClass' : 'removeClass')]('buttonPas disabled');
	$('#responseslist a.insertresponse')[(e.active ? 'removeClass' : 'addClass')]('active');
	});
	rcmail.addEventListener('fileappended', function(e) {
	if (e.attachment.complete)
	attachment_menu_append(e.item);
	});

	// add menu link for each attachment
	$('#attachmentslist > li').each(function() {
	attachment_menu_append(this);
	});
	}
	else if (rcmail.env.action == 'show' \|\| rcmail.env.action == 'preview') {
	// add menu link for each attachment
	$('#attachment-list > li[id^="attach"]').each(function() {
	attachment_menu_append(this);
	});

	$(window).resize(function() {
	if (!$('#attachment-list > li[id^="attach"]').length)
	$('#attachment-list').hide();

	var mvlpe = $('#messagebody.mailvelope');
	if (mvlpe.length) {
	var content = $('#messageframe'),
	h = (content.length ? content.height() + content.offset().top - 25 : $(this).height()) - mvlpe.offset().top - 20;
	mvlpe.height(h);
	}
	});
	}
	}
	else if (rcmail.env.task == 'addressbook') {
	rcmail.addEventListener('afterupload-photo', function(){ rcmail_ui.show_popup('uploadform', false); })
	.gui_object('dragmenu', 'dragmenu');
	}
	else if (rcmail.env.task == 'settings') {
	if (rcmail.env.action == 'folders') {
	rcmail_ui.folder_search_init($('#folder-manager'));
	}

	$('#mainscreen > #prefs-title').detach().prependTo($('#mainscreen > .box'));
	}
	});
	}

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