--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/skins/classic/functions.js	Thu Jan 04 15:52:31 2018 -0500
@@ -0,0 +1,1059 @@
+/**
+ * Roundcube functions for default skin interface
+ *
+ * @licstart  The following is the entire license notice for the
+ * JavaScript code in this file.
+ *
+ * Copyright (c) 2006-2014, The Roundcube Dev Team
+ *
+ * The JavaScript code in this page is free software: you can redistribute it
+ * and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * @licend  The above is the entire license notice
+ * for the JavaScript code in this file.
+ */
+
+/**
+ * Settings
+ */
+
+function rcube_init_settings_tabs()
+{
+  var el, cl, container = $('#tabsbar'),
+    last_tab = $('span:last', container),
+    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;
+
+  // first hide not selected tabs
+  fs.each(function(idx) { if (idx != current) $(this).hide(); });
+
+  // create tabs container
+  var tabs = $('<div>').addClass('tabsbar').appendTo(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() { 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);
+  });
+}
+
+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
+  }
+
+  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 (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);
+},
+
+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);
+  });
+
+  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(),
+    cols = $('input[name="list_col[]"]:checked')
+      .map(function(){ return this.value; }).get();
+
+  rcmail.set_list_options(cols, sort, ord, thread == 'thread' ? 1 : 0);
+},
+
+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/, '');
+
+  $('#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);
+  });
+
+  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);
+    }
+  }
+},
+
+switch_preview_pane: function(elem)
+{
+  var uid, prev_frm = $('#mailpreviewframe');
+
+  if (elem.checked) {
+    rcmail.env.contentframe = 'messagecontframe';
+    if (mailviewsplit.layer) {
+      mailviewsplit.resize();
+      mailviewsplit.layer.elm.style.display = '';
+    }
+    else
+      mailviewsplit.init();
+
+    if (bw.opera) {
+      $('#messagelistcontainer').css({height: ''});
+    }
+    prev_frm.show();
+
+    if (uid = rcmail.message_list.get_single_selection())
+      rcmail.show_message(uid, false, true);
+  }
+  else {
+    prev_frm.hide();
+    if (bw.ie7) {
+      var fr = document.getElementById('mailcontframe');
+      fr.style.bottom = 0;
+      fr.style.height = parseInt(fr.parentNode.offsetHeight)+'px';
+    }
+    else {
+      $('#mailcontframe').css({height: 'auto', bottom: 0});
+      if (bw.opera)
+        $('#messagelistcontainer').css({height: 'auto'});
+    }
+    if (mailviewsplit.layer)
+      mailviewsplit.layer.elm.style.display = 'none';
+
+    rcmail.env.contentframe = null;
+    rcmail.show_contentframe(false);
+  }
+
+  rcmail.command('save-pref', {name: 'preview_pane', value: (elem.checked?1:0)});
+},
+
+/* 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.mce-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);
+  }
+},
+
+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);
+  };
+};
+
+
+// Events handling in iframes (eg. preview pane)
+function iframe_events()
+{
+  // this==iframe
+  try {
+    var doc = this.contentDocument ? this.contentDocument : this.contentWindow ? this.contentWindow.document : null;
+    $(doc).mouseup(function(e) { rcmail_ui.body_mouseup(e); });
+  }
+  catch (e) {
+    // catch possible "Permission denied" error in IE
+  };
+};
+
+// 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, especially on IE
+  if (list.length > (bw.ie && bw.vendver < 9 ? 40 : 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);
+};
+
+// 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);
+
+    $('iframe').load(iframe_events)
+      .contents().mouseup(function(e) { 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)
+        .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); });
+      }
+
+      // 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 == 'compose')
+        rcmail_ui.init_compose_form();
+      else if (rcmail.env.action == 'show' || rcmail.env.action == 'preview')
+        // add menu link for each attachment
+        $('#attachment-list > li[id^="attach"]').each(function() {
+          $(this).append($('<a class="drop"></a>').bind('click keypress', function(e) {
+            if (e.type != 'keypress' || e.which == 13) {
+              rcmail_ui.show_attachmentmenu(this, e);
+              return false;
+            }
+          }));
+        });
+    }
+    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'));
+      }
+    }
+  });
+}