X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=skins%2Fdefault%2Ffunctions.js;h=8482e375a8af082b7dd39f02738c53e4613fa927;hb=76507f7c63a660742e76889ad6e3919f3dde3bb0;hp=9e71f6f9a0e9b677c0d80564d758505d091c747a;hpb=3adad46e27086084a8b28a32fc4fbc953dbfef6c;p=roundcube.git

diff --git a/skins/default/functions.js b/skins/default/functions.js
index 9e71f6f..8482e37 100644
--- a/skins/default/functions.js
+++ b/skins/default/functions.js
@@ -1,5 +1,5 @@
 /**
- * RoundCube functions for default skin interface
+ * Roundcube functions for default skin interface
  */
 
 /**
@@ -8,96 +8,535 @@
 
 function rcube_init_settings_tabs()
 {
+  var tab = '#settingstabdefault';
   if (window.rcmail && rcmail.env.action)
-    {
-    var action = rcmail.env.action=='preferences' ? 'default' : (rcmail.env.action.indexOf('identity')>0 ? 'identities' : rcmail.env.action);
-    var tab = document.getElementById('settingstab'+action);
-    }
-  else 
-    var tab = document.getElementById('settingstabdefault');
-  
-  if (tab)
-    tab.className = 'tablink-selected';
+    tab = '#settingstab' + (rcmail.env.action=='preferences' ? 'default' : (rcmail.env.action.indexOf('identity')>0 ? 'identities' : rcmail.env.action.replace(/\./g, '')));
+
+  $(tab).addClass('tablink-selected');
+  $(tab + '> a').removeAttr('onclick').click(function() { return false; });
 }
 
 function rcube_show_advanced(visible)
 {
-  var rows = document.getElementsByTagName('TR');
-  for(var i=0; i<rows.length; i++)
-    if(rows[i].className && rows[i].className.match(/advanced/))
-      rows[i].style.display = visible ? (bw.ie ? 'block' : 'table-row') : 'none';
+  $('tr.advanced').css('display', (visible ? (bw.ie ? 'block' : 'table-row') : 'none'));
+}
+
+// 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 Composing
+ * Mail UI
  */
 
-function rcmail_show_header_form(id)
+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'},
+    listmenu:       {id:'listmenu', editable:1},
+    dragmessagemenu:{id:'dragmessagemenu', sticky:1},
+    groupmenu:      {id:'groupoptionsmenu', above:1},
+    mailboxmenu:    {id:'mailboxoptionsmenu', above:1},
+    composemenu:    {id:'composeoptionsmenu', editable:1, overlap:1},
+    // 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 = 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) {
+    var parent = $(ref).parent(),
+      win = $(window),
+      pos = parent.hasClass('dropbutton') ? parent.offset() : $(ref).offset();
+
+    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() - 30;
+
+    obj.css({ left:pos.left, top:(pos.top + (above ? -obj.height() : ref.offsetHeight)) });
+  }
+
+  obj[show?'show':'hide']();
+
+  if (bw.ie6 && this.popups[popup].overlap) {
+    $('select').css('visibility', show?'hidden':'inherit');
+    $('select', obj).css('visibility', 'inherit');
+  }
+},
+
+dragmessagemenu: function(show)
+{
+  this.popups.dragmessagemenu.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;
+
+      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);
+      }
+    }
+  }
+  obj[show?'show':'hide']();
+},
+
+set_searchmod: function(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;
+    }
+  });
+},
+
+listmenu: function(show)
+{
+  var obj = this.popups.listmenu.obj,
+    ref = rcube_find_object('listmenulink');
+
+  if (typeof show == 'undefined')
+    show = obj.is(':visible') ? false : true;
+
+  if (show && ref) {
+    var pos = $(ref).offset(),
+      menuwidth = obj.width(),
+      pagewidth = $(document).width();
+
+    if (pagewidth - pos.left < menuwidth && pos.left > menuwidth)
+      pos.left = pos.left - menuwidth;
+
+    obj.css({ left:pos.left, top:(pos.top + ref.offsetHeight + 2)});
+    // 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);
+    // list columns
+    var found, cols = $('input[name="list_col[]"]');
+    for (var i=0; i<cols.length; i++) {
+      if (cols[i].value != 'from')
+        found = jQuery.inArray(cols[i].value, rcmail.env.coltypes) != -1;
+      else
+        found = (jQuery.inArray('from', rcmail.env.coltypes) != -1
+	        || jQuery.inArray('to', rcmail.env.coltypes) != -1);
+      $(cols[i]).prop('checked', found);
+    }
+  }
+
+  obj[show?'show':'hide']();
+
+  if (show) {
+    var maxheight=0;
+    $('#listmenu fieldset').each(function() {
+      var height = $(this).height();
+      if (height > maxheight) {
+        maxheight = height;
+      }
+    });
+    $('#listmenu fieldset').css("min-height", maxheight+"px")
+    // IE6 complains if you set this attribute using either method:
+    //$('#listmenu fieldset').css({'height':'auto !important'});
+    //$('#listmenu fieldset').css("height","auto !important");
+      .height(maxheight);
+  };
+},
+
+open_listmenu: function(e)
+{
+  this.listmenu();
+},
+
+save_listmenu: function()
+{
+  this.listmenu();
+
+  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);
+},
+
+body_mouseup: function(evt, p)
+{
+  var i, target = rcube_event.get_target(evt);
+
+  for (i in this.popups) {
+    if (this.popups[i].obj.is(':visible') && target != rcube_find_object(i+'link')
+      && !this.popups[i].toggle
+      && (!this.popups[i].editable || !this.target_overlaps(target, this.popups[i].id))
+      && (!this.popups[i].sticky || !rcube_mouse_is_over(evt, rcube_find_object(this.popups[i].id)))
+    ) {
+      window.setTimeout('rcmail_ui.show_popup("'+i+'",false);', 50);
+    }
+  }
+},
+
+target_overlaps: function (target, elementid)
 {
-  var link, row, parent, ns, ps;
-  
-  link = document.getElementById(id + '-link');
-  parent = link.parentNode;
+  var element = rcube_find_object(elementid);
+  while (target.parentNode) {
+    if (target.parentNode == element)
+      return true;
+    target = target.parentNode;
+  }
+  return false;
+},
+
+body_keydown: function(evt, p)
+{
+  if (rcube_event.get_keycode(evt) == 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.ie6 || 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, 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++) {
+    if ((field = $('#_'+fields[f])) && field.length && field.val() != '')
+      rcmail_ui.show_header_form(fields[f]);
+  }
+
+  // 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();
+},
+
+resize_compose_body: function()
+{
+  var div = $('#compose-div .boxlistcontent'), w = div.width(), h = div.height();
+  w -= 8;  // 2 x 3px padding + 2 x 1px border
+  h -= 4;
+
+  $('#compose-body').width(w+'px').height(h+'px');
+
+  if (window.tinyMCE && tinyMCE.get('compose-body')) {
+    $('#compose-body_tbl').width((w+6)+'px').height('');
+    $('#compose-body_ifr').width((w+6)+'px').height((h-54)+'px');
+  }
+  else {
+    $('#googie_edit_layer').height(h+'px');
+  }
+},
+
+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';
 
-  if ((ns = rcmail_next_sibling(link)))
-    ns.style.display = 'none';
-  else if ((ps = rcmail_prev_sibling(link)))
-    ps.style.display = 'none';
-    
   link.style.display = 'none';
 
-  if (row = document.getElementById('compose-' + id))
-    {
-    var div = document.getElementById('compose-div');
-    var headers_div = document.getElementById('compose-headers-div');
+  if ((row = document.getElementById('compose-' + id))) {
+    var div = document.getElementById('compose-div'),
+      headers_div = document.getElementById('compose-headers-div');
     row.style.display = (document.all && !window.opera) ? 'block' : 'table-row';
-    div.style.top = (parseInt(headers_div.offsetHeight)) + 'px';
-    }
+    div.style.top = (parseInt(headers_div.offsetHeight, 10) + 3) + 'px';
+    this.resize_compose_body();
+  }
 
   return false;
-}
+},
 
-function rcmail_hide_header_form(id)
+hide_header_form: function(id)
 {
-  var row, parent, ns, ps, link, links;
+  var row, ns,
+    link = document.getElementById(id + '-link'),
+    parent = link.parentNode,
+    links = parent.getElementsByTagName('a');
 
-  link = document.getElementById(id + '-link');
   link.style.display = '';
-  
-  parent = link.parentNode;
-  links = parent.getElementsByTagName('A');
 
   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 = rcmail_next_sibling(links[i]))) {
-	    ns.style.display = '';
-	    break;
-	  }
+	    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');
-    var headers_div = document.getElementById('compose-headers-div');
+  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)) + 'px';
-    }
+    div.style.top = (parseInt(headers_div.offsetHeight, 10) + 1) + 'px';
+    this.resize_compose_body();
+  }
 
   return false;
-}
+},
 
-function rcmail_next_sibling(elm)
+next_sibling: function(elm)
 {
   var ns = elm.nextSibling;
   while (ns && ns.nodeType == 3)
     ns = ns.nextSibling;
   return ns;
-}
+},
 
-function rcmail_prev_sibling(elm)
+prev_sibling: function(elm)
 {
   var ps = elm.previousSibling;
   while (ps && ps.nodeType == 3)
@@ -105,65 +544,123 @@ function rcmail_prev_sibling(elm)
   return ps;
 }
 
-function rcmail_init_compose_form()
+};
+
+
+var rcmail_ui;
+
+function rcube_init_mail_ui()
 {
-  var cc_field = document.getElementById('_cc');
-  if (cc_field && cc_field.value!='')
-    rcmail_show_header_form('cc');
+  rcmail_ui = new rcube_mail_ui();
+  rcube_event.add_listener({ object:rcmail_ui, method:'body_mouseup', event:'mouseup' });
+  rcube_event.add_listener({ object:rcmail_ui, method:'body_keydown', event:'keydown' });
 
-  var bcc_field = document.getElementById('_bcc');
-  if (bcc_field && bcc_field.value!='')
-    rcmail_show_header_form('bcc');
+  $('iframe').load(iframe_events)
+    .contents().mouseup(function(e){rcmail_ui.body_mouseup(e)});
 
-  // 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); };
+  if (rcmail.env.task == 'mail') {
+    rcmail.addEventListener('menu-open', 'open_listmenu', rcmail_ui);
+    rcmail.addEventListener('menu-save', 'save_listmenu', rcmail_ui);
+    rcmail.addEventListener('aftersend-attachment', 'uploadmenu', rcmail_ui);
+    rcmail.addEventListener('aftertoggle-editor', 'resize_compose_body_ev', rcmail_ui);
+    rcmail.gui_object('message_dragmenu', 'dragmessagemenu');
+
+    if (rcmail.gui_objects.mailboxlist) {
+      rcmail.addEventListener('responseaftermark', rcube_render_mailboxlist);
+      rcmail.addEventListener('responseaftergetunread', rcube_render_mailboxlist);
+      rcmail.addEventListener('responseaftercheck-recent', rcube_render_mailboxlist);
+      rcmail.addEventListener('aftercollapse-folder', rcube_render_mailboxlist);
+    }
+
+    if (rcmail.env.action == 'compose')
+      rcmail_ui.init_compose_form();
+  }
+  else if (rcmail.env.task == 'addressbook') {
+    rcmail.addEventListener('afterupload-photo', function(){ rcmail_ui.show_popup('uploadform', false); });
   }
 }
 
-/**
- * Mailbox view
- */
-
-function rcube_mail_ui()
+// Events handling in iframes (eg. preview pane)
+function iframe_events()
 {
-  this.markmenu = new rcube_layer('markmessagemenu');
+  // this==iframe
+  var doc = this.contentDocument ? this.contentDocument : this.contentWindow ? this.contentWindow.document : null;
+  rcube_event.add_listener({ element: doc, object:rcmail_ui, method:'body_mouseup', event:'mouseup' });
 }
 
-rcube_mail_ui.prototype = {
-
-show_markmenu: function(show)
+// Abbreviate mailbox names to fit width of the container
+function rcube_render_mailboxlist()
 {
-  if (typeof show == 'undefined')
-    show = this.markmenu.visible ? false : true;
-  
-  var ref = rcube_find_object('markreadbutton');
-  if (show && ref)
-    this.markmenu.move(ref.offsetLeft, ref.offsetTop + ref.offsetHeight);
-  
-  this.markmenu.show(show);
-},
+  var list = $('#mailboxlist > li a, #mailboxlist ul:visible > li a');
 
-body_mouseup: function(evt, p)
-{
-  if (this.markmenu && this.markmenu.visible && rcube_event.get_target(evt) != rcube_find_object('markreadbutton'))
-    this.show_markmenu(false);
-},
+  // it's too slow with really big number of folders, especially on IE
+  if (list.length > 500 * (bw.ie ? 0.2 : 1))
+    return;
 
-body_keypress: function(evt, p)
-{
-  if (rcube_event.get_keycode(evt) == 27 && this.markmenu && this.markmenu.visible)
-    this.show_markmenu(false);
-}
+  list.each(function(){
+    var elem = $(this),
+      text = elem.data('text');
 
-};
+    if (!text) {
+      text = elem.text().replace(/\s+\(.+$/, '');
+      elem.data('text', text);
+    }
+    if (text.length < 6)
+      return;
 
-var rcmail_ui;
+    var abbrev = fit_string_to_size(text, elem, elem.width() - elem.children('span.unreadcount').width());
+    if (abbrev != text)
+      elem.attr('title', text);
+    elem.contents().filter(function(){ return (this.nodeType == 3); }).get(0).data = abbrev;
+  });
+}
 
-function rcube_init_mail_ui()
+// inspired by https://gist.github.com/24261/7fdb113f1e26111bd78c0c6fe515f6c0bf418af5
+function fit_string_to_size(str, elem, len)
 {
-  rcmail_ui = new rcube_mail_ui();
-  rcube_event.add_listener({ object:rcmail_ui, method:'body_mouseup', event:'mouseup' });
-  rcube_event.add_listener({ object:rcmail_ui, method:'body_keypress', event:'keypress' });
+  var w, 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 = $('<b>').css({visibility: 'hidden', padding: '0px'})
+      .appendTo($('body', document)).get(0);
+    rcmail.env.tmp_span = span;
+  }
+  else {
+    span = rcmail.env.tmp_span;
+  }
+  span.innerHTML = 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.innerHTML = 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;
 }
+
+// Optional parameters used by TinyMCE
+var rcmail_editor_settings = {
+  skin : "default", // "default", "o2k7"
+  skin_variant : "" // "", "silver", "black"
+};