From a2f8fa236143b44f90e53c19806cfd0efa014857 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Mon, 12 May 2014 04:32:45 -0400
Subject: [PATCH] Set aria-selected and aria-expanded state attributes

---
 program/js/app.js | 2746 ++++++++++++++++++++++++++++++++++++++++++++--------------
 1 files changed, 2,064 insertions(+), 682 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index af09572..06008b2 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -1,23 +1,37 @@
-/*
- +-----------------------------------------------------------------------+
- | Roundcube Webmail Client Script                                       |
- |                                                                       |
- | This file is part of the Roundcube Webmail client                     |
- | Copyright (C) 2005-2013, The Roundcube Dev Team                       |
- | Copyright (C) 2011-2013, Kolab Systems AG                             |
- |                                                                       |
- | Licensed under the GNU General Public License version 3 or            |
- | any later version with exceptions for skins & plugins.                |
- | See the README file for a full license statement.                     |
- |                                                                       |
- +-----------------------------------------------------------------------+
- | Authors: Thomas Bruederli <roundcube@gmail.com>                       |
- |          Aleksander 'A.L.E.C' Machniak <alec@alec.pl>                 |
- |          Charles McNulty <charles@charlesmcnulty.com>                 |
- +-----------------------------------------------------------------------+
- | Requires: jquery.js, common.js, list.js                               |
- +-----------------------------------------------------------------------+
-*/
+/**
+ * Roundcube Webmail Client Script
+ *
+ * This file is part of the Roundcube Webmail client
+ *
+ * @licstart  The following is the entire license notice for the
+ * JavaScript code in this file.
+ *
+ * Copyright (C) 2005-2014, The Roundcube Dev Team
+ * Copyright (C) 2011-2014, Kolab Systems AG
+ *
+ * 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 (GNU GPL) as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option)
+ * any later version.  The code is distributed WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU GPL for more details.
+ *
+ * As additional permission under GNU GPL version 3 section 7, you
+ * may distribute non-source (e.g., minimized or compacted) forms of
+ * that code without the copy of the GNU GPL normally required by
+ * section 4, provided you include this license notice and a URL
+ * through which recipients can access the Corresponding Source.
+ *
+ * @licend  The above is the entire license notice
+ * for the JavaScript code in this file.
+ *
+ * @author Thomas Bruederli <roundcube@gmail.com>
+ * @author Aleksander 'A.L.E.C' Machniak <alec@alec.pl>
+ * @author Charles McNulty <charles@charlesmcnulty.com>
+ *
+ * @requires jquery.js, common.js, list.js
+ */
 
 function rcube_webmail()
 {
@@ -31,10 +45,12 @@
   this.onloads = [];
   this.messages = {};
   this.group2expand = {};
+  this.http_request_jobs = {};
+  this.menu_stack = new Array();
 
   // webmail client settings
   this.dblclick_time = 500;
-  this.message_time = 4000;
+  this.message_time = 5000;
   this.identifier_expr = new RegExp('[^0-9a-z\-_]', 'gi');
 
   // environment defaults
@@ -44,7 +60,9 @@
     comm_path: './',
     blankpage: 'program/resources/blank.gif',
     recipients_separator: ',',
-    recipients_delimiter: ', '
+    recipients_delimiter: ', ',
+    popup_width: 1150,
+    popup_width_small: 900
   };
 
   // create protected reference to myself
@@ -136,11 +154,11 @@
   // initialize webmail client
   this.init = function()
   {
-    var n, p = this;
+    var n;
     this.task = this.env.task;
 
     // check browser
-    if (!bw.dom || !bw.xmlhttp_test() || (bw.mz && bw.vendver < 1.9)) {
+    if (this.env.server_error != 409 && (!bw.dom || !bw.xmlhttp_test() || (bw.mz && bw.vendver < 1.9) || (bw.ie && bw.vendver < 7))) {
       this.goto_url('error', '_code=0x199');
       return;
     }
@@ -180,7 +198,10 @@
 
     // enable general commands
     this.enable_command('close', 'logout', 'mail', 'addressbook', 'settings', 'save-pref',
-      'compose', 'undo', 'about', 'switch-task', 'menu-open', 'menu-save', true);
+      'compose', 'undo', 'about', 'switch-task', 'menu-open', 'menu-close', 'menu-save', true);
+
+    // set active task button
+    this.set_button(this.task, 'sel');
 
     if (this.env.permaurl)
       this.enable_command('permaurl', 'extwin', true);
@@ -189,45 +210,47 @@
 
       case 'mail':
         // enable mail commands
-        this.enable_command('list', 'checkmail', 'add-contact', 'search', 'reset-search', 'collapse-folder', true);
+        this.enable_command('list', 'checkmail', 'add-contact', 'search', 'reset-search', 'collapse-folder', 'import-messages', true);
 
         if (this.gui_objects.messagelist) {
           this.message_list = new rcube_list_widget(this.gui_objects.messagelist, {
             multiselect:true, multiexpand:true, draggable:true, keyboard:true,
             column_movable:this.env.col_movable, dblclick_time:this.dblclick_time
             });
-          this.message_list.row_init = function(o){ p.init_message_row(o); };
-          this.message_list.addEventListener('dblclick', function(o){ p.msglist_dbl_click(o); });
-          this.message_list.addEventListener('click', function(o){ p.msglist_click(o); });
-          this.message_list.addEventListener('keypress', function(o){ p.msglist_keypress(o); });
-          this.message_list.addEventListener('select', function(o){ p.msglist_select(o); });
-          this.message_list.addEventListener('dragstart', function(o){ p.drag_start(o); });
-          this.message_list.addEventListener('dragmove', function(e){ p.drag_move(e); });
-          this.message_list.addEventListener('dragend', function(e){ p.drag_end(e); });
-          this.message_list.addEventListener('expandcollapse', function(e){ p.msglist_expand(e); });
-          this.message_list.addEventListener('column_replace', function(e){ p.msglist_set_coltypes(e); });
-          this.message_list.addEventListener('listupdate', function(e){ p.triggerEvent('listupdate', e); });
+          this.message_list
+            .addEventListener('initrow', function(o) { ref.init_message_row(o); })
+            .addEventListener('dblclick', function(o) { ref.msglist_dbl_click(o); })
+            .addEventListener('click', function(o) { ref.msglist_click(o); })
+            .addEventListener('keypress', function(o) { ref.msglist_keypress(o); })
+            .addEventListener('select', function(o) { ref.msglist_select(o); })
+            .addEventListener('dragstart', function(o) { ref.drag_start(o); })
+            .addEventListener('dragmove', function(e) { ref.drag_move(e); })
+            .addEventListener('dragend', function(e) { ref.drag_end(e); })
+            .addEventListener('expandcollapse', function(o) { ref.msglist_expand(o); })
+            .addEventListener('column_replace', function(o) { ref.msglist_set_coltypes(o); })
+            .addEventListener('listupdate', function(o) { ref.triggerEvent('listupdate', o); })
+            .init();
 
-          document.onmouseup = function(e){ return p.doc_mouse_up(e); };
-          this.gui_objects.messagelist.parentNode.onmousedown = function(e){ return p.click_on_list(e); };
+          // TODO: this should go into the list-widget code
+          $(this.message_list.thead).on('click', 'a.sortcol', function(e){
+            return ref.command('sort', $(this).attr('rel'), this);
+          });
 
-          this.message_list.init();
+          this.gui_objects.messagelist.parentNode.onclick = function(e){ return ref.click_on_list(e || window.event); };
+
           this.enable_command('toggle_status', 'toggle_flag', 'sort', true);
+          this.enable_command('set-listmode', this.env.threads && !this.is_multifolder_listing());
 
           // load messages
           this.command('list');
-        }
 
-        if (this.gui_objects.qsearchbox) {
-          if (this.env.search_text != null)
-            this.gui_objects.qsearchbox.value = this.env.search_text;
-          $(this.gui_objects.qsearchbox).focusin(function() { rcmail.message_list && rcmail.message_list.blur(); });
+          $(this.gui_objects.qsearchbox).val(this.env.search_text).focusin(function() { rcmail.message_list.blur(); });
         }
 
         this.set_button_titles();
 
         this.env.message_commands = ['show', 'reply', 'reply-all', 'reply-list',
-          'moveto', 'copy', 'delete', 'open', 'mark', 'edit', 'viewsource',
+          'move', 'copy', 'delete', 'open', 'mark', 'edit', 'viewsource',
           'print', 'load-attachment', 'download-attachment', 'show-headers', 'hide-headers', 'download',
           'forward', 'forward-inline', 'forward-attachment', 'change-format'];
 
@@ -253,12 +276,15 @@
           }
         }
         else if (this.env.action == 'compose') {
-          this.env.compose_commands = ['send-attachment', 'remove-attachment', 'send', 'cancel', 'toggle-editor', 'list-adresses', 'search', 'reset-search', 'extwin'];
+          this.env.address_group_stack = [];
+          this.env.compose_commands = ['send-attachment', 'remove-attachment', 'send', 'cancel',
+            'toggle-editor', 'list-adresses', 'pushgroup', 'search', 'reset-search', 'extwin',
+            'insert-response', 'save-response', 'menu-open', 'menu-close'];
 
           if (this.env.drafts_mailbox)
             this.env.compose_commands.push('savedraft')
 
-          this.enable_command(this.env.compose_commands, 'identities', true);
+          this.enable_command(this.env.compose_commands, 'identities', 'responses', true);
 
           // add more commands (not enabled)
           $.merge(this.env.compose_commands, ['add-recipient', 'firstpage', 'previouspage', 'nextpage', 'lastpage']);
@@ -269,17 +295,37 @@
             this.enable_command('spellcheck', true);
           }
 
-          document.onmouseup = function(e){ return p.doc_mouse_up(e); };
+          // init canned response functions
+          if (this.gui_objects.responseslist) {
+            $('a.insertresponse', this.gui_objects.responseslist)
+              .attr('unselectable', 'on')
+              .mousedown(function(e){ return rcube_event.cancel(e); })
+              .bind('mouseup keypress', function(e){
+                if (e.type == 'mouseup' || rcube_event.get_keycode(e) == 13) {
+                  ref.command('insert-response', $(this).attr('rel'));
+                  $(document.body).trigger('mouseup');  // hides the menu
+                  return rcube_event.cancel(e);
+                }
+              });
+
+            // avoid textarea loosing focus when hitting the save-response button/link
+            for (var i=0; this.buttons['save-response'] && i < this.buttons['save-response'].length; i++) {
+              $('#'+this.buttons['save-response'][i].id).mousedown(function(e){ return rcube_event.cancel(e); })
+            }
+          }
 
           // init message compose form
           this.init_messageform();
         }
+        else if (this.env.action == 'get')
+          this.enable_command('download', 'print', true);
         // show printing dialog
-        else if (this.env.action == 'print' && this.env.uid)
+        else if (this.env.action == 'print' && this.env.uid) {
           if (bw.safari)
             setTimeout('window.print()', 10);
           else
             window.print();
+        }
 
         // get unread count for each mailbox
         if (this.gui_objects.mailboxlist) {
@@ -291,10 +337,13 @@
         // init address book widget
         if (this.gui_objects.contactslist) {
           this.contact_list = new rcube_list_widget(this.gui_objects.contactslist,
-            { multiselect:true, draggable:false, keyboard:false });
-          this.contact_list.addEventListener('select', function(o){ ref.compose_recipient_select(o); });
-          this.contact_list.addEventListener('dblclick', function(o){ ref.compose_add_recipient('to'); });
-          this.contact_list.init();
+            { multiselect:true, draggable:false, keyboard:true });
+          this.contact_list
+            .addEventListener('initrow', function(o) { ref.triggerEvent('insertrow', { cid:o.uid, row:o }); })
+            .addEventListener('select', function(o) { ref.compose_recipient_select(o); })
+            .addEventListener('dblclick', function(o) { ref.compose_add_recipient('to'); })
+            .addEventListener('keypress', function(o) { if (o.key_pressed == o.ENTER_KEY) ref.compose_add_recipient('to'); })
+            .init();
         }
 
         if (this.gui_objects.addressbookslist) {
@@ -320,30 +369,32 @@
         break;
 
       case 'addressbook':
+        this.env.address_group_stack = [];
+
         if (this.gui_objects.folderlist)
           this.env.contactfolders = $.extend($.extend({}, this.env.address_sources), this.env.contactgroups);
 
         this.enable_command('add', 'import', this.env.writable_source);
-        this.enable_command('list', 'listgroup', 'listsearch', 'advanced-search', true);
+        this.enable_command('list', 'listgroup', 'pushgroup', 'popgroup', 'listsearch', 'search', 'reset-search', 'advanced-search', true);
 
         if (this.gui_objects.contactslist) {
           this.contact_list = new rcube_list_widget(this.gui_objects.contactslist,
             {multiselect:true, draggable:this.gui_objects.folderlist?true:false, keyboard:true});
-          this.contact_list.row_init = function(row){ p.triggerEvent('insertrow', { cid:row.uid, row:row }); };
-          this.contact_list.addEventListener('keypress', function(o){ p.contactlist_keypress(o); });
-          this.contact_list.addEventListener('select', function(o){ p.contactlist_select(o); });
-          this.contact_list.addEventListener('dragstart', function(o){ p.drag_start(o); });
-          this.contact_list.addEventListener('dragmove', function(e){ p.drag_move(e); });
-          this.contact_list.addEventListener('dragend', function(e){ p.drag_end(e); });
-          this.contact_list.init();
+          this.contact_list
+            .addEventListener('initrow', function(o) { ref.triggerEvent('insertrow', { cid:o.uid, row:o }); })
+            .addEventListener('keypress', function(o) { ref.contactlist_keypress(o); })
+            .addEventListener('select', function(o) { ref.contactlist_select(o); })
+            .addEventListener('dragstart', function(o) { ref.drag_start(o); })
+            .addEventListener('dragmove', function(e) { ref.drag_move(e); })
+            .addEventListener('dragend', function(e) { ref.drag_end(e); })
+            .init();
 
           if (this.env.cid)
             this.contact_list.highlight_row(this.env.cid);
 
-          this.gui_objects.contactslist.parentNode.onmousedown = function(e){ return p.click_on_list(e); };
-          document.onmouseup = function(e){ return p.doc_mouse_up(e); };
-          if (this.gui_objects.qsearchbox)
-            $(this.gui_objects.qsearchbox).focusin(function() { rcmail.contact_list.blur(); });
+          this.gui_objects.contactslist.parentNode.onmousedown = function(e){ return ref.click_on_list(e); };
+
+          $(this.gui_objects.qsearchbox).focusin(function() { ref.contact_list.blur(); });
 
           this.update_group_commands();
           this.command('list');
@@ -367,13 +418,10 @@
               this.init_contact_form();
         }
 
-        if (this.gui_objects.qsearchbox)
-          this.enable_command('search', 'reset-search', 'moveto', true);
-
         break;
 
       case 'settings':
-        this.enable_command('preferences', 'identities', 'save', 'folders', true);
+        this.enable_command('preferences', 'identities', 'responses', 'save', 'folders', true);
 
         if (this.env.action == 'identities') {
           this.enable_command('add', this.env.identities_level < 2);
@@ -381,37 +429,54 @@
         else if (this.env.action == 'edit-identity' || this.env.action == 'add-identity') {
           this.enable_command('save', 'edit', 'toggle-editor', true);
           this.enable_command('delete', this.env.identities_level < 2);
-
-          if (this.env.action == 'add-identity')
-            $("input[type='text']").first().select();
         }
         else if (this.env.action == 'folders') {
           this.enable_command('subscribe', 'unsubscribe', 'create-folder', 'rename-folder', true);
         }
         else if (this.env.action == 'edit-folder' && this.gui_objects.editform) {
           this.enable_command('save', 'folder-size', true);
-          parent.rcmail.env.messagecount = this.env.messagecount;
+          parent.rcmail.env.exists = this.env.messagecount;
           parent.rcmail.enable_command('purge', this.env.messagecount);
-          $("input[type='text']").first().select();
+        }
+        else if (this.env.action == 'responses') {
+          this.enable_command('add', true);
         }
 
         if (this.gui_objects.identitieslist) {
-          this.identity_list = new rcube_list_widget(this.gui_objects.identitieslist, {multiselect:false, draggable:false, keyboard:false});
-          this.identity_list.addEventListener('select', function(o){ p.identity_select(o); });
-          this.identity_list.init();
-          this.identity_list.focus();
+          this.identity_list = new rcube_list_widget(this.gui_objects.identitieslist,
+            {multiselect:false, draggable:false, keyboard:false});
+          this.identity_list
+            .addEventListener('select', function(o) { ref.identity_select(o); })
+            .init()
+            .focus();
 
           if (this.env.iid)
             this.identity_list.highlight_row(this.env.iid);
         }
         else if (this.gui_objects.sectionslist) {
           this.sections_list = new rcube_list_widget(this.gui_objects.sectionslist, {multiselect:false, draggable:false, keyboard:false});
-          this.sections_list.addEventListener('select', function(o){ p.section_select(o); });
-          this.sections_list.init();
-          this.sections_list.focus();
+          this.sections_list
+            .addEventListener('select', function(o) { ref.section_select(o); })
+            .init()
+            .focus();
         }
-        else if (this.gui_objects.subscriptionlist)
+        else if (this.gui_objects.subscriptionlist) {
           this.init_subscription_list();
+        }
+        else if (this.gui_objects.responseslist) {
+          this.responses_list = new rcube_list_widget(this.gui_objects.responseslist, {multiselect:false, draggable:false, keyboard:false});
+          this.responses_list
+            .addEventListener('select', function(list) {
+              var win, id = list.get_single_selection();
+              ref.enable_command('delete', !!id && $.inArray(id, ref.env.readonly_responses) < 0);
+              if (id && (win = ref.get_frame_window(ref.env.contentframe))) {
+                ref.set_busy(true);
+                ref.location_href({ _action:'edit-response', _key:id, _framed:1 }, win);
+              }
+            })
+            .init()
+            .focus();
+        }
 
         break;
 
@@ -425,7 +490,7 @@
           $('#rcmloginpwd').focus();
 
         // detect client timezone
-        if (window.jstz && !bw.ie6) {
+        if (window.jstz) {
           var timezone = jstz.determine();
           if (timezone.name())
             $('#rcmlogintz').val(timezone.name());
@@ -445,6 +510,11 @@
         break;
     }
 
+    // select first input field in an edit form
+    if (this.gui_objects.editform)
+      $("input,select,textarea", this.gui_objects.editform)
+        .not(':hidden').not(':disabled').first().select();
+
     // unset contentframe variable if preview_pane is enabled
     if (this.env.contentframe && !$('#' + this.env.contentframe).is(':visible'))
       this.env.contentframe = null;
@@ -455,6 +525,7 @@
 
     // flag object as complete
     this.loaded = true;
+    this.env.lastrefresh = new Date();
 
     // show message
     if (this.pending_message)
@@ -470,11 +541,12 @@
           id_prefix: 'rcmli',
           id_encode: this.html_identifier_encode,
           id_decode: this.html_identifier_decode,
-          check_droptarget: function(node){ return !node.virtual && ref.check_droptarget(node.id) }
+          check_droptarget: function(node) { return !node.virtual && ref.check_droptarget(node.id) }
         });
-        this.treelist.addEventListener('collapse', function(node){ ref.folder_collapsed(node) });
-        this.treelist.addEventListener('expand', function(node){ ref.folder_collapsed(node) });
-        this.treelist.addEventListener('select', function(node){ ref.triggerEvent('selectfolder', { folder:node.id, prefix:'rcmli' }) });
+        this.treelist
+          .addEventListener('collapse', function(node) { ref.folder_collapsed(node) })
+          .addEventListener('expand', function(node) { ref.folder_collapsed(node) })
+          .addEventListener('select', function(node) { ref.triggerEvent('selectfolder', { folder:node.id, prefix:'rcmli' }) });
       }
     }
 
@@ -485,6 +557,18 @@
         .bind('dragover dragleave', function(e){ return ref.file_drag_hover(e, e.type == 'dragover'); })
         .get(0).addEventListener('drop', function(e){ return ref.file_dropped(e); }, false);
     }
+
+    // catch document (and iframe) mouse clicks
+    var body_mouseup = function(e){ return ref.doc_mouse_up(e); };
+    $(document.body)
+      .bind('mouseup', body_mouseup)
+      .bind('keydown', function(e){ return ref.doc_keypress(e); });
+
+    $('iframe').load(function(e) {
+        try { $(this.contentDocument || this.contentWindow).on('mouseup', body_mouseup);  }
+        catch (e) {/* catch possible "Permission denied" error in IE */ }
+      })
+      .contents().on('mouseup', body_mouseup);
 
     // trigger init event hook
     this.triggerEvent('init', { task:this.task, action:this.env.action });
@@ -516,12 +600,13 @@
   // execute a specific command on the web client
   this.command = function(command, props, obj, event)
   {
-    var ret, uid, cid, url, flag;
+    var ret, uid, cid, url, flag, aborted = false;
 
     if (obj && obj.blur)
       obj.blur();
 
-    if (this.busy)
+    // do nothing if interface is locked by other command (with exception for searching reset)
+    if (this.busy && !(command == 'reset-search' && this.last_command == 'search'))
       return false;
 
     // let the browser handle this click (shift/ctrl usually opens the link in a new window/tab)
@@ -539,10 +624,15 @@
     }
 
     // check input before leaving compose step
-    if (this.task == 'mail' && this.env.action == 'compose' && $.inArray(command, this.env.compose_commands)<0) {
+    if (this.task == 'mail' && this.env.action == 'compose' && $.inArray(command, this.env.compose_commands) < 0 && !this.env.server_error) {
       if (this.cmp_hash != this.compose_field_hash() && !confirm(this.get_label('notsentwarning')))
         return false;
+
+      // remove copy from local storage if compose screen is left intentionally
+      this.remove_compose_data(this.env.compose_id);
     }
+
+    this.last_command = command;
 
     // process external commands
     if (typeof this.command_handlers[command] === 'function') {
@@ -555,8 +645,8 @@
     }
 
     // trigger plugin hooks
-    this.triggerEvent('actionbefore', {props:props, action:command});
-    ret = this.triggerEvent('before'+command, props);
+    this.triggerEvent('actionbefore', {props:props, action:command, originalEvent:event});
+    ret = this.triggerEvent('before'+command, props || event);
     if (ret !== undefined) {
       // abort if one of the handlers returned false
       if (ret === false)
@@ -576,10 +666,10 @@
         break;
 
       // commands to switch task
+      case 'logout':
       case 'mail':
       case 'addressbook':
       case 'settings':
-      case 'logout':
         this.switch_task(command);
         break;
 
@@ -596,15 +686,22 @@
 
       case 'extwin':
         if (this.env.action == 'compose') {
-          var form = this.gui_objects.messageform;
+          var form = this.gui_objects.messageform,
+            win = this.open_window('');
 
-          $("input[name='_action']", form).val('compose');
-          form.action = this.url('mail/compose', { _id: this.env.compose_id, _extwin: 1 });
-          form.target = this.open_window('', 1100, 900);
-          form.submit();
+          if (win) {
+            this.save_compose_form_local();
+            $("input[name='_action']", form).val('compose');
+            form.action = this.url('mail/compose', { _id: this.env.compose_id, _extwin: 1 });
+            form.target = win.name;
+            form.submit();
+          }
+          else {
+            // this.display_message(this.get_label('windowopenerror'), 'error');
+          }
         }
         else {
-          this.open_window(this.env.permaurl, 900, 900);
+          this.open_window(this.env.permaurl, true);
         }
         break;
 
@@ -624,14 +721,20 @@
           var mimetype = this.env.attachments[props.id];
           this.enable_command('open-attachment', mimetype && this.env.mimetypes && $.inArray(mimetype, this.env.mimetypes) >= 0);
         }
+        this.show_menu(props, props.show || undefined, event);
+        break;
+
+      case 'menu-close':
+        this.hide_menu(props, event);
+        break;
 
       case 'menu-save':
-        this.triggerEvent(command, {props:props});
+        this.triggerEvent(command, {props:props, originalEvent:event});
         return false;
 
       case 'open':
         if (uid = this.get_single_uid()) {
-          obj.href = this.url('show', {_mbox: this.env.mailbox, _uid: uid});
+          obj.href = this.url('show', {_mbox: this.get_message_mailbox(uid), _uid: uid});
           return true;
         }
         break;
@@ -642,8 +745,17 @@
         break;
 
       case 'list':
-        if (props && props != '')
-          this.reset_qsearch();
+        // re-send search query for the selected folder
+        if (props && props != '' && this.env.search_request && this.gui_objects.qsearchbox.value) {
+          var oldmbox = this.env.search_scope == 'all' ? '*' : this.env.mailbox;
+          this.env.search_mods[props] = this.env.search_mods[oldmbox];  // copy search mods from active search
+          this.env.mailbox = props;
+          this.env.search_scope = 'sub';
+          this.qsearch(this.gui_objects.qsearchbox.value);
+          this.select_folder(this.env.mailbox, '', true);
+          break;
+        }
+
         if (this.env.action == 'compose' && this.env.extwin)
           window.close();
         else if (this.task == 'mail') {
@@ -652,6 +764,10 @@
         }
         else if (this.task == 'addressbook')
           this.list_contacts(props);
+        break;
+
+      case 'set-listmode':
+        this.set_list_options(null, undefined, undefined, props == 'threads' ? 1 : 0);
         break;
 
       case 'sort':
@@ -716,6 +832,13 @@
       case 'add':
         if (this.task == 'addressbook')
           this.load_contact(0, 'add');
+        else if (this.task == 'settings' && this.env.action == 'responses') {
+          var frame;
+          if ((frame = this.get_frame_window(this.env.contentframe))) {
+            this.set_busy(true);
+            this.location_href({ _action:'add-response', _framed:1 }, frame);
+          }
+        }
         else if (this.task == 'settings') {
           this.identity_list.clear_selection();
           this.load_identity(0, 'add-identity');
@@ -727,9 +850,9 @@
           this.load_contact(cid, 'edit');
         else if (this.task == 'settings' && props)
           this.load_identity(props, 'edit-identity');
-        else if (this.task == 'mail' && (cid = this.get_single_uid())) {
-          url = { _mbox: this.env.mailbox };
-          url[this.env.mailbox == this.env.drafts_mailbox && props != 'new' ? '_draft_uid' : '_uid'] = cid;
+        else if (this.task == 'mail' && (uid = this.get_single_uid())) {
+          url = { _mbox: this.get_message_mailbox(uid) };
+          url[this.env.mailbox == this.env.drafts_mailbox && props != 'new' ? '_draft_uid' : '_uid'] = uid;
           this.open_compose_step(url);
         }
         break;
@@ -779,23 +902,28 @@
         // addressbook task
         else if (this.task == 'addressbook')
           this.delete_contacts();
-        // user settings task
+        // settings: canned response
+        else if (this.task == 'settings' && this.env.action == 'responses')
+          this.delete_response();
+        // settings: user identities
         else if (this.task == 'settings')
           this.delete_identity();
         break;
 
       // mail task commands
       case 'move':
-      case 'moveto':
+      case 'moveto': // deprecated
         if (this.task == 'mail')
-          this.move_messages(props);
+          this.move_messages(props, event);
         else if (this.task == 'addressbook')
-          this.copy_contact(null, props);
+          this.move_contacts(props);
         break;
 
       case 'copy':
         if (this.task == 'mail')
-          this.copy_messages(props);
+          this.copy_messages(props, event);
+        else if (this.task == 'addressbook')
+          this.copy_contacts(props);
         break;
 
       case 'mark':
@@ -804,37 +932,24 @@
         break;
 
       case 'toggle_status':
-        if (props && !props._row)
-          break;
+      case 'toggle_flag':
+        flag = command == 'toggle_flag' ? 'flagged' : 'read';
 
-        flag = 'read';
-
-        if (props._row.uid) {
-          uid = props._row.uid;
-
+        if (uid = props) {
+          // toggle flagged/unflagged
+          if (flag == 'flagged') {
+            if (this.message_list.rows[uid].flagged)
+              flag = 'unflagged';
+          }
           // toggle read/unread
-          if (this.message_list.rows[uid].deleted)
+          else if (this.message_list.rows[uid].deleted)
             flag = 'undelete';
           else if (!this.message_list.rows[uid].unread)
             flag = 'unread';
+
+          this.mark_message(flag, uid);
         }
 
-        this.mark_message(flag, uid);
-        break;
-
-      case 'toggle_flag':
-        if (props && !props._row)
-          break;
-
-        flag = 'flagged';
-
-        if (props._row.uid) {
-          uid = props._row.uid;
-          // toggle flagged/unflagged
-          if (this.message_list.rows[uid].flagged)
-            flag = 'unflagged';
-        }
-        this.mark_message(flag, uid);
         break;
 
       case 'always-load':
@@ -857,11 +972,8 @@
 
         // open attachment in frame if it's of a supported mimetype
         if (command != 'download-attachment' && mimetype && this.env.mimetypes && $.inArray(mimetype, this.env.mimetypes) >= 0) {
-          var attachment_win = window.open(this.env.comm_path+'&_action=get&'+qstring+'&_frame=1', this.html_identifier('rcubemailattachment'+this.env.uid+props));
-          if (attachment_win) {
-            setTimeout(function(){ attachment_win.focus(); }, 10);
+          if (this.open_window(this.env.comm_path+'&_action=get&'+qstring+'&_frame=1'))
             break;
-          }
         }
 
         this.goto_url('get', qstring+'&_download=1', false);
@@ -1000,7 +1112,11 @@
         // Reset the auto-save timer
         clearTimeout(this.save_timer);
 
-        this.upload_file(props || this.gui_objects.uploadform);
+        if (!(flag = this.upload_file(props || this.gui_objects.uploadform, 'upload'))) {
+          if (flag !== false)
+            alert(this.get_label('selectimportfile'));
+          aborted = true;
+        }
         break;
 
       case 'insert-sig':
@@ -1020,10 +1136,10 @@
       case 'reply-list':
       case 'reply':
         if (uid = this.get_single_uid()) {
-          url = {_reply_uid: uid, _mbox: this.env.mailbox};
+          url = {_reply_uid: uid, _mbox: this.get_message_mailbox(uid)};
           if (command == 'reply-all')
             // do reply-list, when list is detected and popup menu wasn't used
-            url._all = (!props && this.commands['reply-list'] ? 'list' : 'all');
+            url._all = (!props && this.env.reply_all_mode == 1 && this.commands['reply-list'] ? 'list' : 'all');
           else if (command == 'reply-list')
             url._all = 'list';
 
@@ -1036,7 +1152,7 @@
       case 'forward':
         var uids = this.env.uid ? [this.env.uid] : (this.message_list ? this.message_list.get_selection() : []);
         if (uids.length) {
-          url = { _forward_uid: this.uids_to_list(uids), _mbox: this.env.mailbox };
+          url = { _forward_uid: this.uids_to_list(uids), _mbox: this.env.mailbox, _search: this.env.search_request };
           if (command == 'forward-attachment' || (!props && this.env.forward_attachment) || uids.length > 1)
             url._attachment = 1;
           this.open_compose_step(url);
@@ -1044,10 +1160,12 @@
         break;
 
       case 'print':
-        if (uid = this.get_single_uid()) {
-          ref.printwin = window.open(this.env.comm_path+'&_action=print&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+(this.env.safemode ? '&_safe=1' : ''));
+        if (this.env.action == 'get') {
+          this.gui_objects.messagepartframe.contentWindow.print();
+        }
+        else if (uid = this.get_single_uid()) {
+          ref.printwin = this.open_window(this.env.comm_path+'&_action=print&_uid='+uid+'&_mbox='+urlencode(this.get_message_mailbox(uid))+(this.env.safemode ? '&_safe=1' : ''), true, true);
           if (this.printwin) {
-            setTimeout(function(){ ref.printwin.focus(); }, 20);
             if (this.env.action != 'show')
               this.mark_message('read', uid);
           }
@@ -1055,16 +1173,17 @@
         break;
 
       case 'viewsource':
-        if (uid = this.get_single_uid()) {
-          ref.sourcewin = window.open(this.env.comm_path+'&_action=viewsource&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox));
-          if (this.sourcewin)
-            setTimeout(function(){ ref.sourcewin.focus(); }, 20);
-          }
+        if (uid = this.get_single_uid())
+          this.open_window(this.env.comm_path+'&_action=viewsource&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox), true, true);
         break;
 
       case 'download':
-        if (uid = this.get_single_uid())
-          this.goto_url('viewsource', { _uid: uid, _mbox: this.env.mailbox, _save: 1 });
+        if (this.env.action == 'get') {
+          location.href = location.href.replace(/_frame=/, '_download=');
+        }
+        else if (uid = this.get_single_uid()) {
+          this.goto_url('viewsource', { _uid: uid, _mbox: this.get_message_mailbox(uid), _save: 1 });
+        }
         break;
 
       // quicksearch
@@ -1100,9 +1219,37 @@
         }
         break;
 
+      case 'pushgroup':
+        // add group ID to stack
+        this.env.address_group_stack.push(props.id);
+        if (obj && event)
+          rcube_event.cancel(event);
+
       case 'listgroup':
         this.reset_qsearch();
         this.list_contacts(props.source, props.id);
+        break;
+
+      case 'popgroup':
+        if (this.env.address_group_stack.length > 1) {
+          this.env.address_group_stack.pop();
+          this.reset_qsearch();
+          this.list_contacts(props.source, this.env.address_group_stack[this.env.address_group_stack.length-1]);
+        }
+        break;
+
+      case 'import-messages':
+        var form = props || this.gui_objects.importform,
+          importlock = this.set_busy(true, 'importwait');
+
+        $('input[name="_unlock"]', form).val(importlock);
+
+        if (!(flag = this.upload_file(form, 'import'))) {
+          this.set_busy(false, null, importlock);
+          if (flag !== false)
+            alert(this.get_label('selectimportfile'));
+          aborted = true;
+        }
         break;
 
       case 'import':
@@ -1110,6 +1257,7 @@
           var file = document.getElementById('rcmimportfile');
           if (file && !file.value) {
             alert(this.get_label('selectimportfile'));
+            aborted = true;
             break;
           }
           this.gui_objects.importform.submit();
@@ -1143,6 +1291,7 @@
       // user settings commands
       case 'preferences':
       case 'identities':
+      case 'responses':
       case 'folders':
         this.goto_url('settings/' + command);
         break;
@@ -1160,9 +1309,9 @@
         break;
     }
 
-    if (this.triggerEvent('after'+command, props) === false)
+    if (!aborted && this.triggerEvent('after'+command, props) === false)
       ret = false;
-    this.triggerEvent('actionafter', {props:props, action:command});
+    this.triggerEvent('actionafter', { props:props, action:command, aborted:aborted });
 
     return ret === false ? false : obj ? false : true;
   };
@@ -1179,6 +1328,7 @@
       if (typeof cmd === 'string') {
         this.commands[cmd] = enable;
         this.set_button(cmd, (enable ? 'act' : 'pas'));
+        this.triggerEvent('enable-command', {command: cmd, status: enable});
       }
       // push array elements into commands array
       else {
@@ -1187,6 +1337,11 @@
       }
     }
   };
+
+  this.command_enabled = function(cmd)
+  {
+    return this.commands[cmd];
+  }
 
   // lock/unlock interface
   this.set_busy = function(a, message, id)
@@ -1232,8 +1387,10 @@
       return;
 
     var url = this.get_task_url(task);
-    if (task=='mail')
+    if (task == 'mail')
       url += '&_mbox=INBOX';
+    else if (task == 'logout')
+      this.clear_compose_data();
 
     this.redirect(url);
   };
@@ -1321,12 +1478,13 @@
   this.drag_menu = function(e, target)
   {
     var modkey = rcube_event.get_modifier(e),
-      menu = this.gui_objects.message_dragmenu;
+      menu = this.gui_objects.dragmenu;
 
     if (menu && modkey == SHIFT_KEY && this.commands['copy']) {
       var pos = rcube_event.get_mouse_pos(e);
       this.env.drag_target = target;
-      $(menu).css({top: (pos.y-10)+'px', left: (pos.x-10)+'px'}).show();
+      this.show_menu(this.gui_objects.dragmenu.id, true, e);
+      $(menu).css({top: (pos.y-10)+'px', left: (pos.x-10)+'px'});
       return true;
     }
 
@@ -1335,7 +1493,7 @@
 
   this.drag_menu_action = function(action)
   {
-    var menu = this.gui_objects.message_dragmenu;
+    var menu = this.gui_objects.dragmenu;
     if (menu) {
       $(menu).hide();
     }
@@ -1345,8 +1503,6 @@
 
   this.drag_start = function(list)
   {
-    var model = this.task == 'mail' ? this.env.mailboxes : this.env.contactfolders;
-
     this.drag_active = true;
 
     if (this.preview_timer)
@@ -1361,11 +1517,31 @@
 
   this.drag_end = function(e)
   {
-    this.drag_active = false;
-    this.env.last_folder_target = null;
+    var list, model;
 
     if (this.treelist)
       this.treelist.drag_end();
+
+    // execute drag & drop action when mouse was released
+    if (list = this.message_list)
+      model = this.env.mailboxes;
+    else if (list = this.contact_list)
+      model = this.env.contactfolders;
+
+    if (this.drag_active && model && this.env.last_folder_target) {
+      var target = model[this.env.last_folder_target];
+      list.draglayer.hide();
+
+      if (this.contact_list) {
+        if (!this.contacts_drag_menu(e, target))
+          this.command('move', target);
+      }
+      else if (!this.drag_menu(e, target))
+        this.command('move', target);
+    }
+
+    this.drag_active = false;
+    this.env.last_folder_target = null;
   };
 
   this.drag_move = function(e)
@@ -1408,7 +1584,7 @@
 
       // select the folder if one of its childs is currently selected
       // don't select if it's virtual (#1488346)
-      if (this.env.mailbox && this.env.mailbox.indexOf(name + this.env.delimiter) == 0 && !node.virtual)
+      if (this.env.mailbox && this.env.mailbox.startsWith(name + this.env.delimiter) && !node.virtual)
         this.command('list', name);
     }
     else {
@@ -1424,35 +1600,18 @@
     }
   };
 
+  // global mouse-click handler to cleanup some UI elements
   this.doc_mouse_up = function(e)
   {
-    var model, list, id;
+    var list, id, target = rcube_event.get_target(e);
 
     // ignore event if jquery UI dialog is open
-    if ($(rcube_event.get_target(e)).closest('.ui-dialog, .ui-widget-overlay').length)
+    if ($(target).closest('.ui-dialog, .ui-widget-overlay').length)
       return;
 
-    if (list = this.message_list)
-      model = this.env.mailboxes;
-    else if (list = this.contact_list)
-      model = this.env.contactfolders;
-    else if (this.ksearch_value)
-      this.ksearch_blur();
-
+    list = this.message_list || this.contact_list;
     if (list && !rcube_mouse_is_over(e, list.list.parentNode))
       list.blur();
-
-    // handle mouse release when dragging
-    if (this.drag_active && model && this.env.last_folder_target) {
-      var target = model[this.env.last_folder_target];
-
-      this.env.last_folder_target = null;
-      list.draglayer.hide();
-      this.drag_end(e);
-
-      if (!this.drag_menu(e, target))
-        this.command('moveto', target);
-    }
 
     // reset 'pressed' buttons
     if (this.buttons_sel) {
@@ -1461,7 +1620,73 @@
           this.button_out(this.buttons_sel[id], id);
       this.buttons_sel = {};
     }
+
+    // reset popup menus; delayed to have updated menu_stack data
+    window.setTimeout(function(e){
+      var obj, skip, config, id, i;
+      for (i = ref.menu_stack.length - 1; i >= 0; i--) {
+        id = ref.menu_stack[i];
+        obj = $('#' + id);
+
+        if (obj.is(':visible')
+          && target != obj.data('opener')
+          && target != obj.get(0)  // check if scroll bar was clicked (#1489832)
+          && id != skip
+          && (obj.attr('data-editable') != 'true' || !$(target).parents('#' + id).length)
+          && (obj.attr('data-sticky') != 'true' || !rcube_mouse_is_over(e, obj.get(0)))
+        ) {
+          ref.hide_menu(id, e);
+        }
+        skip = obj.data('parent');
+      }
+    }, 10);
   };
+
+  // global keypress event handler
+  this.doc_keypress = function(e)
+  {
+    // Helper method to move focus to the next/prev active menu item
+    var focus_menu_item = function(dir) {
+      var obj, mod = dir < 0 ? 'prevAll' : 'nextAll', limit = dir < 0 ? 'last' : 'first';
+      if (ref.focused_menu && (obj = $('#'+ref.focused_menu))) {
+        return obj.find(':focus').closest('li')[mod](':has(:not([aria-disabled=true]))').find('a,input')[limit]().focus().length;
+      }
+
+      return 0;
+    };
+
+    var target = e.target || {},
+      keyCode = rcube_event.get_keycode(e);
+
+    if (e.keyCode != 27 && (!this.menu_keyboard_active || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')) {
+      return true;
+    }
+
+    switch (keyCode) {
+      case 38:
+      case 40:
+      case 63232: // "up", in safari keypress
+      case 63233: // "down", in safari keypress
+        focus_menu_item(mod = keyCode == 38 || keyCode == 63232 ? -1 : 1);
+        break;
+
+      case 9:   // tab
+        if (this.focused_menu) {
+          var mod = rcube_event.get_modifier(e);
+          if (!focus_menu_item(mod == SHIFT_KEY ? -1 : 1)) {
+            this.hide_menu(this.focused_menu, e);
+          }
+        }
+        return rcube_event.cancel(e);
+
+      case 27:  // esc
+        if (this.menu_stack.length)
+          this.hide_menu(this.menu_stack[this.menu_stack.length-1], e);
+        break;
+    }
+
+    return true;
+  }
 
   this.click_on_list = function(e)
   {
@@ -1469,9 +1694,9 @@
       this.gui_objects.qsearchbox.blur();
 
     if (this.message_list)
-      this.message_list.focus();
+      this.message_list.focus(e);
     else if (this.contact_list)
-      this.contact_list.focus();
+      this.contact_list.focus(e);
 
     return true;
   };
@@ -1498,7 +1723,7 @@
       }
     }
     // Multi-message commands
-    this.enable_command('delete', 'moveto', 'copy', 'mark', 'forward', 'forward-attachment', list.selection.length > 0);
+    this.enable_command('delete', 'move', 'copy', 'mark', 'forward', 'forward-attachment', list.selection.length > 0);
 
     // reset all-pages-selection
     if (selected || (list.selection.length && list.selection.length != list.rowcount))
@@ -1506,7 +1731,7 @@
 
     // start timer for message preview (wait for double click)
     if (selected && this.env.contentframe && !list.multi_selecting && !this.dummy_select)
-      this.preview_timer = setTimeout(function(){ ref.msglist_get_preview(); }, 200);
+      this.preview_timer = setTimeout(function() { ref.msglist_get_preview(); }, this.dblclick_time);
     else if (this.env.contentframe)
       this.show_contentframe(false);
   };
@@ -1522,12 +1747,13 @@
 
     var win = this.get_frame_window(this.env.contentframe);
 
-    if (win && win.location.href.indexOf(this.env.blankpage)>=0) {
+    if (win && win.location.href.indexOf(this.env.blankpage) >= 0) {
       if (this.preview_timer)
         clearTimeout(this.preview_timer);
       if (this.preview_read_timer)
         clearTimeout(this.preview_read_timer);
-      this.preview_timer = setTimeout(function(){ ref.msglist_get_preview(); }, 200);
+
+      this.preview_timer = setTimeout(function() { ref.msglist_get_preview(); }, this.dblclick_time);
     }
   };
 
@@ -1535,12 +1761,12 @@
   {
     if (this.preview_timer)
       clearTimeout(this.preview_timer);
-
     if (this.preview_read_timer)
       clearTimeout(this.preview_read_timer);
 
     var uid = list.get_single_selection();
-    if (uid && this.env.mailbox == this.env.drafts_mailbox)
+
+    if (uid && (this.env.messages[uid].mbox || this.env.mailbox) == this.env.drafts_mailbox)
       this.open_compose_step({ _draft_uid: uid, _mbox: this.env.mailbox });
     else if (uid)
       this.show_message(uid, false, false);
@@ -1581,75 +1807,89 @@
   {
     var i, found, name, cols = list.thead.rows[0].cells;
 
-    this.env.coltypes = [];
+    this.env.listcols = [];
 
     for (i=0; i<cols.length; i++)
-      if (cols[i].id && cols[i].id.match(/^rcm/)) {
-        name = cols[i].id.replace(/^rcm/, '');
-        this.env.coltypes.push(name);
+      if (cols[i].id && cols[i].id.startsWith('rcm')) {
+        name = cols[i].id.slice(3);
+        this.env.listcols.push(name);
       }
 
-    if ((found = $.inArray('flag', this.env.coltypes)) >= 0)
+    if ((found = $.inArray('flag', this.env.listcols)) >= 0)
       this.env.flagged_col = found;
 
-    if ((found = $.inArray('subject', this.env.coltypes)) >= 0)
+    if ((found = $.inArray('subject', this.env.listcols)) >= 0)
       this.env.subject_col = found;
 
-    this.command('save-pref', { name: 'list_cols', value: this.env.coltypes, session: 'list_attrib/columns' });
+    this.command('save-pref', { name: 'list_cols', value: this.env.listcols, session: 'list_attrib/columns' });
   };
 
   this.check_droptarget = function(id)
   {
-    if (this.task == 'mail')
-      return (this.env.mailboxes[id] && this.env.mailboxes[id].id != this.env.mailbox && !this.env.mailboxes[id].virtual) ? 1 : 0;
+    switch (this.task) {
+      case 'mail':
+        return (this.env.mailboxes[id]
+            && !this.env.mailboxes[id].virtual
+            && (this.env.mailboxes[id].id != this.env.mailbox || this.is_multifolder_listing())) ? 1 : 0;
 
-    if (this.task == 'settings')
-      return id != this.env.mailbox ? 1 : 0;
+      case 'settings':
+        return id != this.env.mailbox ? 1 : 0;
 
-    if (this.task == 'addressbook') {
-      if (id != this.env.source && this.env.contactfolders[id]) {
-        // droptarget is a group - contact add to group action
-        if (this.env.contactfolders[id].type == 'group') {
-          var target_abook = this.env.contactfolders[id].source;
-          if (this.env.contactfolders[id].id != this.env.group && !this.env.contactfolders[target_abook].readonly) {
-            // search result may contain contacts from many sources
-            return (this.env.selection_sources.length > 1 || $.inArray(target_abook, this.env.selection_sources) == -1) ? 2 : 1;
+      case 'addressbook':
+        var target;
+        if (id != this.env.source && (target = this.env.contactfolders[id])) {
+          // droptarget is a group
+          if (target.type == 'group') {
+            if (target.id != this.env.group && !this.env.contactfolders[target.source].readonly) {
+              var is_other = this.env.selection_sources.length > 1 || $.inArray(target.source, this.env.selection_sources) == -1;
+              return !is_other || this.commands.move ? 1 : 2;
+            }
+          }
+          // droptarget is a (writable) addressbook and it's not the source
+          else if (!target.readonly && (this.env.selection_sources.length > 1 || $.inArray(id, this.env.selection_sources) == -1)) {
+            return this.commands.move ? 1 : 2;
           }
         }
-        // droptarget is a (writable) addressbook - contact copy action
-        else if (!this.env.contactfolders[id].readonly) {
-          // search result may contain contacts from many sources
-          return (this.env.selection_sources.length > 1 || $.inArray(id, this.env.selection_sources) == -1) ? 2 : 0;
-        }
-      }
     }
 
     return 0;
   };
 
-  this.open_window = function(url, width, height)
+  // open popup window
+  this.open_window = function(url, small, toolbar)
   {
-    var dh = (window.outerHeight || 0) - (window.innerHeight || 0),
-      dw = (window.outerWidth || 0) - (window.innerWidth || 0),
-      sh = screen.availHeight || screen.height,
-      sw = screen.availWidth || screen.width,
-      w = Math.min(width, sw),
-      h = Math.min(height, sh),
-      l = Math.max(0, (sw - w) / 2 + (screen.left || 0)),
-      t = Math.max(0, (sh - h) / 2 + (screen.top || 0)),
-      wname = 'rcmextwin' + new Date().getTime(),
-      extwin = window.open(url + (url.match(/\?/) ? '&' : '?') + '_extwin=1', wname,
-        'width='+(w-dw)+',height='+(h-dh)+',top='+t+',left='+l+',resizable=yes,toolbar=no,status=no,location=no');
+    var wname = 'rcmextwin' + new Date().getTime();
+
+    url += (url.match(/\?/) ? '&' : '?') + '_extwin=1';
+
+    if (this.env.standard_windows)
+      var extwin = window.open(url, wname);
+    else {
+      var win = this.is_framed() ? parent.window : window,
+        page = $(win),
+        page_width = page.width(),
+        page_height = bw.mz ? $('body', win).height() : page.height(),
+        w = Math.min(small ? this.env.popup_width_small : this.env.popup_width, page_width),
+        h = page_height, // always use same height
+        l = (win.screenLeft || win.screenX) + 20,
+        t = (win.screenTop || win.screenY) + 20,
+        extwin = window.open(url, wname,
+          'width='+w+',height='+h+',top='+t+',left='+l+',resizable=yes,location=no,scrollbars=yes'
+          +(toolbar ? ',toolbar=yes,menubar=yes,status=yes' : ',toolbar=no,menubar=no,status=no'));
+    }
 
     // write loading... message to empty windows
     if (!url && extwin.document) {
       extwin.document.write('<html><body>' + this.get_label('loading') + '</body></html>');
     }
 
-    // focus window, delayed to bring to front
-    window.setTimeout(function() { extwin.focus(); }, 10);
+    // allow plugins to grab the window reference (#1489413)
+    this.triggerEvent('openwindow', { url:url, handle:extwin });
 
-    return wname;
+    // focus window, delayed to bring to front
+    window.setTimeout(function() { extwin && extwin.focus(); }, 10);
+
+    return extwin;
   };
 
 
@@ -1659,34 +1899,45 @@
 
   this.init_message_row = function(row)
   {
-    var expando, self = this, uid = row.uid,
-      status_icon = (this.env.status_col != null ? 'status' : 'msg') + 'icn' + row.uid;
+    var i, fn = {}, uid = row.uid,
+      status_icon = (this.env.status_col != null ? 'status' : 'msg') + 'icn' + row.id;
 
     if (uid && this.env.messages[uid])
       $.extend(row, this.env.messages[uid]);
 
     // set eventhandler to status icon
     if (row.icon = document.getElementById(status_icon)) {
-      row.icon._row = row.obj;
-      row.icon.onmousedown = function(e) { self.command('toggle_status', this); rcube_event.cancel(e); };
+      fn.icon = function(e) { ref.command('toggle_status', uid); };
     }
 
     // save message icon position too
     if (this.env.status_col != null)
-      row.msgicon = document.getElementById('msgicn'+row.uid);
+      row.msgicon = document.getElementById('msgicn'+row.id);
     else
       row.msgicon = row.icon;
 
-    // set eventhandler to flag icon, if icon found
-    if (this.env.flagged_col != null && (row.flagicon = document.getElementById('flagicn'+row.uid))) {
-      row.flagicon._row = row.obj;
-      row.flagicon.onmousedown = function(e) { self.command('toggle_flag', this); rcube_event.cancel(e); };
+    // set eventhandler to flag icon
+    if (this.env.flagged_col != null && (row.flagicon = document.getElementById('flagicn'+row.id))) {
+      fn.flagicon = function(e) { ref.command('toggle_flag', uid); };
     }
 
-    if (!row.depth && row.has_children && (expando = document.getElementById('rcmexpando'+row.uid))) {
-      row.expando = expando;
-      expando.onmousedown = function(e) { return self.expand_message_row(e, uid); };
+    // set event handler to thread expand/collapse icon
+    if (!row.depth && row.has_children && (row.expando = document.getElementById('rcmexpando'+row.id))) {
+      fn.expando = function(e) { ref.expand_message_row(e, uid); };
     }
+
+    // attach events
+    $.each(fn, function(i, f) {
+      row[i].onclick = function(e) { f(e); return rcube_event.cancel(e); };
+      if (bw.touch) {
+        row[i].addEventListener('touchend', function(e) {
+          if (e.changedTouches.length == 1) {
+            f(e);
+            return rcube_event.cancel(e);
+          }
+        }, false);
+      }
+    });
 
     this.triggerEvent('insertrow', { uid:uid, row:row });
   };
@@ -1718,6 +1969,7 @@
       selected: this.select_all_mode || this.message_list.in_selection(uid),
       ml: flags.ml?1:0,
       ctype: flags.ctype,
+      mbox: flags.mbox,
       // flags from plugins
       flags: flags.extra_flags
     });
@@ -1731,9 +1983,8 @@
         + (!flags.seen ? ' unread' : '')
         + (flags.deleted ? ' deleted' : '')
         + (flags.flagged ? ' flagged' : '')
-        + (flags.unread_children && flags.seen && !this.env.autoexpand_threads ? ' unroot' : '')
         + (message.selected ? ' selected' : ''),
-      row = { cols:[], style:{}, id:'rcmrow'+uid };
+      row = { cols:[], style:{}, id:'rcmrow'+this.html_identifier(uid,true), uid:uid };
 
     // message status icons
     css_class = 'msgicon';
@@ -1759,7 +2010,7 @@
     if (this.env.threading) {
       if (message.depth) {
         // This assumes that div width is hardcoded to 15px,
-        tree += '<span id="rcmtab' + uid + '" class="branch" style="width:' + (message.depth * 15) + 'px;">&nbsp;&nbsp;</span>';
+        tree += '<span id="rcmtab' + row.id + '" class="branch" style="width:' + (message.depth * 15) + 'px;">&nbsp;&nbsp;</span>';
 
         if ((rows[message.parent_uid] && rows[message.parent_uid].expanded === false)
           || ((this.env.autoexpand_threads == 0 || this.env.autoexpand_threads == 2) &&
@@ -1778,33 +2029,44 @@
           message.expanded = true;
         }
 
-        expando = '<div id="rcmexpando' + uid + '" class="' + (message.expanded ? 'expanded' : 'collapsed') + '">&nbsp;&nbsp;</div>';
+        expando = '<div id="rcmexpando' + row.id + '" class="' + (message.expanded ? 'expanded' : 'collapsed') + '">&nbsp;&nbsp;</div>';
         row_class += ' thread' + (message.expanded? ' expanded' : '');
       }
+
+      if (flags.unread_children && flags.seen && !message.expanded)
+        row_class += ' unroot';
     }
 
-    tree += '<span id="msgicn'+uid+'" class="'+css_class+'">&nbsp;</span>';
+    tree += '<span id="msgicn'+row.id+'" class="'+css_class+'">&nbsp;</span>';
     row.className = row_class;
 
-    // build subject link 
-    if (!bw.ie && cols.subject) {
-      var action = flags.mbox == this.env.drafts_mailbox ? 'compose' : 'show';
-      var uid_param = flags.mbox == this.env.drafts_mailbox ? '_draft_uid' : '_uid';
-      cols.subject = '<a href="./?_task=mail&_action='+action+'&_mbox='+urlencode(flags.mbox)+'&'+uid_param+'='+uid+'"'+
-        ' onclick="return rcube_event.cancel(event)" onmouseover="rcube_webmail.long_subject_title(this,'+(message.depth+1)+')">'+cols.subject+'</a>';
+    // build subject link
+    if (cols.subject) {
+      var action  = flags.mbox == this.env.drafts_mailbox ? 'compose' : 'show',
+        uid_param = flags.mbox == this.env.drafts_mailbox ? '_draft_uid' : '_uid',
+        query = { _mbox: flags.mbox };
+      query[uid_param] = uid;
+      cols.subject = '<a href="' + this.url(action, query) + '" onclick="return rcube_event.keyboard_only(event)"' +
+        ' onmouseover="rcube_webmail.long_subject_title(this,'+(message.depth+1)+')" tabindex="-1"><span>'+cols.subject+'</span></a>';
     }
 
     // add each submitted col
-    for (n in this.env.coltypes) {
-      c = this.env.coltypes[n];
-      col = { className: String(c).toLowerCase() };
+    for (n in this.env.listcols) {
+      c = this.env.listcols[n];
+      col = {className: String(c).toLowerCase(), events:{}};
+
+      if (this.env.coltypes[c] && this.env.coltypes[c].hidden) {
+        col.className += ' hidden';
+      }
 
       if (c == 'flag') {
         css_class = (flags.flagged ? 'flagged' : 'unflagged');
-        html = '<span id="flagicn'+uid+'" class="'+css_class+'">&nbsp;</span>';
+        html = '<span id="flagicn'+row.id+'" class="'+css_class+'">&nbsp;</span>';
       }
       else if (c == 'attachment') {
-        if (/application\/|multipart\/(m|signed)/.test(flags.ctype))
+        if (flags.attachmentClass)
+          html = '<span class="'+flags.attachmentClass+'">&nbsp;</span>';
+        else if (/application\/|multipart\/(m|signed)/.test(flags.ctype))
           html = '<span class="attachment">&nbsp;</span>';
         else if (/multipart\/report/.test(flags.ctype))
           html = '<span class="report">&nbsp;</span>';
@@ -1820,16 +2082,13 @@
           css_class = 'unreadchildren';
         else
           css_class = 'msgicon';
-        html = '<span id="statusicn'+uid+'" class="'+css_class+'">&nbsp;</span>';
+        html = '<span id="statusicn'+row.id+'" class="'+css_class+'">&nbsp;</span>';
       }
       else if (c == 'threads')
         html = expando;
       else if (c == 'subject') {
-        if (bw.ie) {
-          col.onmouseover = function() { rcube_webmail.long_subject_title_ie(this, message.depth+1); };
-          if (bw.ie8)
-            tree = '<span></span>' + tree; // #1487821
-        }
+        if (bw.ie)
+          col.events.mouseover = function() { rcube_webmail.long_subject_title_ex(this); };
         html = tree + cols[c];
       }
       else if (c == 'priority') {
@@ -1837,6 +2096,9 @@
           html = '<span class="prio'+flags.prio+'">&nbsp;</span>';
         else
           html = '&nbsp;';
+      }
+      else if (c == 'folder') {
+        html = '<span onmouseover="rcube_webmail.long_subject_title(this)">' + cols[c] + '<span>';
       }
       else
         html = cols[c];
@@ -1887,7 +2149,7 @@
 
     if (cols && cols.length) {
       // make sure new columns are added at the end of the list
-      var i, idx, name, newcols = [], oldcols = this.env.coltypes;
+      var i, idx, name, newcols = [], oldcols = this.env.listcols;
       for (i=0; i<oldcols.length; i++) {
         name = oldcols[i];
         idx = $.inArray(name, cols);
@@ -1918,7 +2180,7 @@
 
     var win, target = window,
       action = preview ? 'preview': 'show',
-      url = '&_action='+action+'&_uid='+id+'&_mbox='+urlencode(this.env.mailbox);
+      url = '&_action='+action+'&_uid='+id+'&_mbox='+urlencode(this.get_message_mailbox(id));
 
     if (preview && (win = this.get_frame_window(this.env.contentframe))) {
       target = win;
@@ -1943,7 +2205,7 @@
     }
     else {
       if (!preview && this.env.message_extwin && !this.env.extwin)
-        this.open_window(this.env.comm_path+url, 1000, 1200);
+        this.open_window(this.env.comm_path+url, true);
       else
         this.location_href(this.env.comm_path+url, target, true);
 
@@ -1951,7 +2213,6 @@
       if (preview && this.message_list && this.message_list.rows[id] && this.message_list.rows[id].unread && this.env.preview_pane_mark_read >= 0) {
         this.preview_read_timer = setTimeout(function() {
           ref.set_message(id, 'unread', false);
-          ref.update_thread_root(id, 'read');
           if (ref.env.unread_counts[ref.env.mailbox]) {
             ref.env.unread_counts[ref.env.mailbox] -= 1;
             ref.set_unread_count(ref.env.mailbox, ref.env.unread_counts[ref.env.mailbox], ref.env.mailbox == 'INBOX');
@@ -1969,14 +2230,20 @@
 
     if (name && (frame = this.get_frame_element(name))) {
       if (!show && (win = this.get_frame_window(name))) {
-        if (win.location && win.location.href.indexOf(this.env.blankpage)<0)
+        if (win.location.href.indexOf(this.env.blankpage) < 0) {
+          if (win.stop)
+            win.stop();
+          else // IE
+            win.document.execCommand('Stop');
+
           win.location.href = this.env.blankpage;
+        }
       }
       else if (!bw.safari && !bw.konq)
         $(frame)[show ? 'show' : 'hide']();
     }
 
-    if (!show && this.busy)
+    if (!show && this.env.frame_lock)
       this.set_busy(false, null, this.env.frame_lock);
   };
 
@@ -2030,7 +2297,7 @@
     var lock = this.set_busy(true, 'checkingmail'),
       params = this.check_recent_params();
 
-    this.http_request('check-recent', params, lock);
+    this.http_post('check-recent', params, lock);
   };
 
   // list messages of a specific mailbox using filter
@@ -2042,11 +2309,20 @@
 
     // reset vars
     this.env.current_page = 1;
+    this.env.search_filter = filter;
     this.http_request('search', this.search_params(false, filter), lock);
   };
 
+  // reload the current message listing
+  this.refresh_list = function()
+  {
+    this.list_mailbox(this.env.mailbox, this.env.current_page || 1, null, { _clear:1 }, true);
+    if (this.message_list)
+      this.message_list.clear_selection();
+  };
+
   // list messages of a specific mailbox
-  this.list_mailbox = function(mbox, page, sort, url)
+  this.list_mailbox = function(mbox, page, sort, url, update_only)
   {
     var win, target = window;
 
@@ -2071,15 +2347,17 @@
       this.select_all_mode = false;
     }
 
-    // unselect selected messages and clear the list and message data
-    this.clear_message_list();
+    if (!update_only) {
+      // unselect selected messages and clear the list and message data
+      this.clear_message_list();
 
-    if (mbox != this.env.mailbox || (mbox == this.env.mailbox && !page && !sort))
-      url._refresh = 1;
+      if (mbox != this.env.mailbox || (mbox == this.env.mailbox && !page && !sort))
+        url._refresh = 1;
 
-    this.select_folder(mbox, '', true);
-    this.unmark_folder(mbox, 'recent', '', true);
-    this.env.mailbox = mbox;
+      this.select_folder(mbox, '', true);
+      this.unmark_folder(mbox, 'recent', '', true);
+      this.env.mailbox = mbox;
+    }
 
     // load message list remotely
     if (this.gui_objects.messagelist) {
@@ -2104,29 +2382,27 @@
 
   this.clear_message_list = function()
   {
-      this.env.messages = {};
-      this.last_selected = 0;
+    this.env.messages = {};
+    this.last_selected = 0;
 
-      this.show_contentframe(false);
-      if (this.message_list)
-        this.message_list.clear(true);
+    this.show_contentframe(false);
+    if (this.message_list)
+      this.message_list.clear(true);
   };
 
   // send remote request to load message list
-  this.list_mailbox_remote = function(mbox, page, post_data)
+  this.list_mailbox_remote = function(mbox, page, url)
   {
-    // clear message list first
-    this.message_list.clear();
-
     var lock = this.set_busy(true, 'loading');
 
-    if (typeof post_data != 'object')
-      post_data = {};
-    post_data._mbox = mbox;
+    if (typeof url != 'object')
+      url = {};
+    url._mbox = mbox;
     if (page)
-      post_data._page = page;
+      url._page = page;
 
-    this.http_request('list', post_data, lock);
+    this.http_request('list', url, lock);
+    this.update_state({ _mbox: mbox, _page: (page && page > 1 ? page : null) });
   };
 
   // removes messages that doesn't exists from list selection array
@@ -2278,7 +2554,7 @@
     }
 
     if (html)
-      $('#rcmtab'+uid).html(html);
+      $('#rcmtab'+this.html_identifier(uid, true)).html(html);
   };
 
   // update parent in a thread
@@ -2342,14 +2618,14 @@
 
         r.depth--; // move left
         // reset width and clear the content of a tab, icons will be added later
-        $('#rcmtab'+r.uid).width(r.depth * 15).html('');
+        $('#rcmtab'+r.id).width(r.depth * 15).html('');
         if (!r.depth) { // a new root
           count++; // increase roots count
           r.parent_uid = 0;
           if (r.has_children) {
             // replace 'leaf' with 'collapsed'
-            $('#rcmrow'+r.uid+' '+'.leaf:first')
-              .attr('id', 'rcmexpando' + r.uid)
+            $('#'+r.id+' .leaf:first')
+              .attr('id', 'rcmexpando' + r.id)
               .attr('class', (r.obj.style.display != 'none' ? 'expanded' : 'collapsed'))
               .bind('mousedown', {uid:r.uid, p:this},
                 function(e) { return e.data.p.expand_message_row(e, e.data.uid); });
@@ -2451,8 +2727,11 @@
     if (!row)
       return false;
 
-    if (flag == 'unread')
+    if (flag == 'unread') {
+      if (row.unread != status)
+        this.update_thread_root(uid, status ? 'unread' : 'read');
       row.unread = status;
+    }
     else if(flag == 'deleted')
       row.deleted = status;
     else if (flag == 'replied')
@@ -2510,10 +2789,12 @@
   };
 
   // copy selected messages to the specified mailbox
-  this.copy_messages = function(mbox)
+  this.copy_messages = function(mbox, event)
   {
     if (mbox && typeof mbox === 'object')
       mbox = mbox.id;
+    else if (!mbox)
+      return this.folder_selector(event, function(folder) { ref.command('copy', folder); });
 
     // exit if current or no mailbox specified
     if (!mbox || mbox == this.env.mailbox)
@@ -2530,13 +2811,15 @@
   };
 
   // move selected messages to the specified mailbox
-  this.move_messages = function(mbox)
+  this.move_messages = function(mbox, event)
   {
     if (mbox && typeof mbox === 'object')
       mbox = mbox.id;
+    else if (!mbox)
+      return this.folder_selector(event, function(folder) { ref.command('move', folder); });
 
     // exit if current or no mailbox specified
-    if (!mbox || mbox == this.env.mailbox)
+    if (!mbox || (mbox == this.env.mailbox && !this.is_multifolder_listing()))
       return;
 
     var lock = false, post_data = this.selection_post_data({_target_mbox: mbox});
@@ -2554,26 +2837,13 @@
     // Hide message command buttons until a message is selected
     this.enable_command(this.env.message_commands, false);
 
-    this._with_selected_messages('moveto', post_data, lock);
+    this._with_selected_messages('move', post_data, lock);
   };
 
   // delete selected messages from the current mailbox
   this.delete_messages = function(event)
   {
-    var uid, i, len, trash = this.env.trash_mailbox,
-      list = this.message_list,
-      selection = list ? list.get_selection() : [];
-
-    // exit if no mailbox specified or if selection is empty
-    if (!this.env.uid && !selection.length)
-      return;
-
-    // also select childs of collapsed rows
-    for (i=0, len=selection.length; i<len; i++) {
-      uid = selection[i];
-      if (list.rows[uid].has_children && !list.rows[uid].expanded)
-        list.select_children(uid);
-    }
+    var list = this.message_list, trash = this.env.trash_mailbox;
 
     // if config is set to flag for deletion
     if (this.env.flag_for_deletion) {
@@ -2613,11 +2883,12 @@
     this._with_selected_messages('delete', post_data);
   };
 
-  // Send a specifc moveto/delete request with UIDs of all selected messages
+  // Send a specific move/delete request with UIDs of all selected messages
   // @private
   this._with_selected_messages = function(action, post_data, lock)
   {
-    var count = 0, msg;
+    var count = 0, msg,
+      remove = (action == 'delete' || !this.is_multifolder_listing());
 
     // update the list (remove rows, clear selection)
     if (this.message_list) {
@@ -2634,10 +2905,11 @@
             roots.push(root);
           }
         }
-        this.message_list.remove_row(id, (this.env.display_next && n == selection.length-1));
+        if (remove)
+          this.message_list.remove_row(id, (this.env.display_next && n == selection.length-1));
       }
       // make sure there are no selected rows
-      if (!this.env.display_next)
+      if (!this.env.display_next && remove)
         this.message_list.clear_selection();
       // update thread tree icons
       for (n=0, len=roots.length; n<len; n++) {
@@ -2645,17 +2917,17 @@
       }
     }
 
-    if (this.env.display_next && this.env.next_uid)
-      post_data._next_uid = this.env.next_uid;
-
     if (count < 0)
       post_data._count = (count*-1);
     // remove threads from the end of the list
-    else if (count > 0)
+    else if (count > 0 && remove)
       this.delete_excessive_thread_rows();
 
+    if (!remove)
+      post_data._refresh = 1;
+
     if (!lock) {
-      msg = action == 'moveto' ? 'movingmessage' : 'deletingmessage';
+      msg = action == 'move' ? 'movingmessage' : 'deletingmessage';
       lock = this.display_message(this.get_label(msg), 'loading');
     }
 
@@ -2682,6 +2954,9 @@
     // also send search request to get the right messages
     if (this.env.search_request)
       data._search = this.env.search_request;
+
+    if (this.env.display_next && this.env.next_uid)
+      data._next_uid = this.env.next_uid;
 
     return data;
   };
@@ -2749,9 +3024,6 @@
       this.set_message(a_uids[i], 'unread', (flag == 'unread' ? true : false));
 
     this.http_post('mark', post_data, lock);
-
-    for (i=0; i<len; i++)
-      this.update_thread_root(a_uids[i], flag);
   };
 
   // set image to flagged or unflagged
@@ -2773,10 +3045,10 @@
   {
     var len = a_uids.length,
       i, uid, all_deleted = true,
-      rows = this.message_list ? this.message_list.rows : [];
+      rows = this.message_list ? this.message_list.rows : {};
 
     if (len == 1) {
-      if (!rows.length || (rows[a_uids[0]] && !rows[a_uids[0]].deleted))
+      if (!this.message_list || (rows[a_uids[0]] && !rows[a_uids[0]].deleted))
         this.flag_as_deleted(a_uids);
       else
         this.flag_as_undeleted(a_uids);
@@ -2817,7 +3089,7 @@
     var r_uids = [],
       post_data = this.selection_post_data({_uid: this.uids_to_list(a_uids), _flag: 'delete'}),
       lock = this.display_message(this.get_label('markingmessage'), 'loading'),
-      rows = this.message_list ? this.message_list.rows : [],
+      rows = this.message_list ? this.message_list.rows : {},
       count = 0;
 
     for (var i=0, len=a_uids.length; i<len; i++) {
@@ -2837,7 +3109,7 @@
 
     // make sure there are no selected rows
     if (this.env.skip_deleted && this.message_list) {
-      if(!this.env.display_next)
+      if (!this.env.display_next)
         this.message_list.clear_selection();
       if (count < 0)
         post_data._count = (count*-1);
@@ -2861,9 +3133,10 @@
   this.flag_deleted_as_read = function(uids)
   {
     var icn_src, uid, i, len,
-      rows = this.message_list ? this.message_list.rows : [];
+      rows = this.message_list ? this.message_list.rows : {};
 
-    uids = String(uids).split(',');
+    if (typeof uids == 'string')
+      uids = String(uids).split(',');
 
     for (i=0, len=uids.length; i<len; i++) {
       uid = uids[i];
@@ -2876,7 +3149,7 @@
   // with select_all mode checking
   this.uids_to_list = function(uids)
   {
-    return this.select_all_mode ? '*' : uids.join(',');
+    return this.select_all_mode ? '*' : (uids.length <= 1 ? uids.join(',') : uids);
   };
 
   // Sets title of the delete button
@@ -2933,9 +3206,12 @@
   // test if purge command is allowed
   this.purge_mailbox_test = function()
   {
-    return (this.env.exists && (this.env.mailbox == this.env.trash_mailbox || this.env.mailbox == this.env.junk_mailbox
-      || this.env.mailbox.match('^' + RegExp.escape(this.env.trash_mailbox) + RegExp.escape(this.env.delimiter))
-      || this.env.mailbox.match('^' + RegExp.escape(this.env.junk_mailbox) + RegExp.escape(this.env.delimiter))));
+    return (this.env.exists && (
+      this.env.mailbox == this.env.trash_mailbox
+      || this.env.mailbox == this.env.junk_mailbox
+      || this.env.mailbox.startsWith(this.env.trash_mailbox + this.env.delimiter)
+      || this.env.mailbox.startsWith(this.env.junk_mailbox + this.env.delimiter)
+    ));
   };
 
 
@@ -2946,8 +3222,8 @@
   // handler for keyboard events on the _user field
   this.login_user_keyup = function(e)
   {
-    var key = rcube_event.get_keycode(e);
-    var passwd = $('#rcmloginpwd');
+    var key = rcube_event.get_keycode(e),
+      passwd = $('#rcmloginpwd');
 
     // enter
     if (key == 13 && passwd.length && !passwd.val()) {
@@ -2969,11 +3245,12 @@
 
     // open new compose window
     if (this.env.compose_extwin && !this.env.extwin) {
-      this.open_window(url, 1150, 900);
+      this.open_window(url);
     }
     else {
       this.redirect(url);
-      window.resizeTo(Math.max(1150, $(window).width()), Math.max(900, $(window).height()));
+      if (this.env.extwin)
+        window.resizeTo(Math.max(this.env.popup_width, $(window).width()), $(window).height() + 24);
     }
   };
 
@@ -2993,7 +3270,12 @@
 
     // close compose step in opener
     if (opener_rc && opener_rc.env.action == 'compose') {
-      setTimeout(function(){ opener.history.back(); }, 100);
+      setTimeout(function(){
+        if (opener.history.length > 1)
+          opener.history.back();
+        else
+          opener_rc.redirect(opener_rc.get_task_url('mail'));
+      }, 100);
       this.env.opened_extwin = true;
     }
 
@@ -3015,8 +3297,66 @@
       this.set_caret_pos(input_message, this.env.top_posting ? 0 : $(input_message).val().length);
       // add signature according to selected identity
       // if we have HTML editor, signature is added in callback
-      if (input_from.prop('type') == 'select-one' && !this.env.opened_extwin) {
+      if (input_from.prop('type') == 'select-one') {
         this.change_identity(input_from[0]);
+      }
+    }
+
+    // check for locally stored compose data
+    if (window.localStorage) {
+      var index = this.local_storage_get_item('compose.index', []);
+
+      for (var key, i = 0; i < index.length; i++) {
+        key = index[i], formdata = this.local_storage_get_item('compose.' + key, null, true);
+        if (!formdata) {
+          continue;
+        }
+        // restore saved copy of current compose_id
+        if (formdata.changed && key == this.env.compose_id) {
+          this.restore_compose_form(key, html_mode);
+          break;
+        }
+        // skip records from 'other' drafts
+        if (this.env.draft_id && formdata.draft_id && formdata.draft_id != this.env.draft_id) {
+          continue;
+        }
+        // skip records on reply
+        if (this.env.reply_msgid && formdata.reply_msgid != this.env.reply_msgid) {
+          continue;
+        }
+        // show dialog asking to restore the message
+        if (formdata.changed && formdata.session != this.env.session_id) {
+          this.show_popup_dialog(
+            this.get_label('restoresavedcomposedata')
+              .replace('$date', new Date(formdata.changed).toLocaleString())
+              .replace('$subject', formdata._subject)
+              .replace(/\n/g, '<br/>'),
+            this.get_label('restoremessage'),
+            [{
+              text: this.get_label('restore'),
+              click: function(){
+                ref.restore_compose_form(key, html_mode);
+                ref.remove_compose_data(key);  // remove old copy
+                ref.save_compose_form_local();  // save under current compose_id
+                $(this).dialog('close');
+              }
+            },
+            {
+              text: this.get_label('delete'),
+              click: function(){
+                ref.remove_compose_data(key);
+                $(this).dialog('close');
+              }
+            },
+            {
+              text: this.get_label('ignore'),
+              click: function(){
+                $(this).dialog('close');
+              }
+            }]
+          );
+          break;
+        }
       }
     }
 
@@ -3040,7 +3380,7 @@
   {
     this.env.recipients_delimiter = this.env.recipients_separator + ' ';
 
-    obj[bw.ie || bw.safari || bw.chrome ? 'keydown' : 'keypress'](function(e) { return ref.ksearch_keydown(e, this, props); })
+    obj.keydown(function(e) { return ref.ksearch_keydown(e, this, props); })
       .attr('autocomplete', 'off');
   };
 
@@ -3076,12 +3416,18 @@
 
   this.compose_recipient_select = function(list)
   {
-    this.enable_command('add-recipient', list.selection.length > 0);
+    var id, n, recipients = 0;
+    for (n=0; n < list.selection.length; n++) {
+      id = list.selection[n];
+      if (this.env.contactdata[id])
+        recipients++;
+    }
+    this.enable_command('add-recipient', recipients);
   };
 
   this.compose_add_recipient = function(field)
   {
-    var recipients = [], input = $('#_'+field);
+    var recipients = [], input = $('#_'+field), delim = this.env.recipients_delimiter;
 
     if (this.contact_list && this.contact_list.selection.length) {
       for (var id, n=0; n < this.contact_list.selection.length; n++) {
@@ -3100,8 +3446,10 @@
     }
 
     if (recipients.length && input.length) {
-      var oldval = input.val();
-      input.val((oldval ? oldval + this.env.recipients_delimiter : '') + recipients.join(this.env.recipients_delimiter));
+      var oldval = input.val(), rx = new RegExp(RegExp.escape(delim) + '\\s*$');
+      if (oldval && !rx.test(oldval))
+        oldval += delim + ' ';
+      input.val(oldval + recipients.join(delim + ' ') + delim + ' ');
       this.triggerEvent('add-recipient', { field:field, recipients:recipients });
     }
   };
@@ -3217,6 +3565,157 @@
     return true;
   };
 
+  this.insert_response = function(key)
+  {
+    var insert = this.env.textresponses[key] ? this.env.textresponses[key].text : null;
+    if (!insert)
+      return false;
+
+    // insert into tinyMCE editor
+    if ($("input[name='_is_html']").val() == '1') {
+      var editor = tinyMCE.get(this.env.composebody);
+      editor.getWin().focus(); // correct focus in IE & Chrome
+      editor.selection.setContent(this.quote_html(insert).replace(/\r?\n/g, '<br/>'), { format:'text' });
+    }
+    // replace selection in compose textarea
+    else {
+      var textarea = rcube_find_object(this.env.composebody),
+        selection = $(textarea).is(':focus') ? this.get_input_selection(textarea) : { start:0, end:0 },
+        inp_value = textarea.value;
+        pre = inp_value.substring(0, selection.start),
+        end = inp_value.substring(selection.end, inp_value.length);
+
+      // insert response text
+      textarea.value = pre + insert + end;
+
+      // set caret after inserted text
+      this.set_caret_pos(textarea, selection.start + insert.length);
+      textarea.focus();
+    }
+  };
+
+  /**
+   * Open the dialog to save a new canned response
+   */
+  this.save_response = function()
+  {
+    var sigstart, text = '', strip = false;
+
+    // get selected text from tinyMCE editor
+    if ($("input[name='_is_html']").val() == '1') {
+      var editor = tinyMCE.get(this.env.composebody);
+      editor.getWin().focus(); // correct focus in IE & Chrome
+      text = editor.selection.getContent({ format:'text' });
+
+      if (!text) {
+        text = editor.getContent({ format:'text' });
+        strip = true;
+      }
+    }
+    // get selected text from compose textarea
+    else {
+      var textarea = rcube_find_object(this.env.composebody), sigstart;
+      if (textarea && $(textarea).is(':focus')) {
+        text = this.get_input_selection(textarea).text;
+      }
+
+      if (!text && textarea) {
+        text = textarea.value;
+        strip = true;
+      }
+    }
+
+    // strip off signature
+    if (strip) {
+      sigstart = text.indexOf('-- \n');
+      if (sigstart > 0) {
+        text = text.substring(0, sigstart);
+      }
+    }
+
+    // show dialog to enter a name and to modify the text to be saved
+    var buttons = {},
+      html = '<form class="propform">' +
+      '<div class="prop block"><label>' + this.get_label('responsename') + '</label>' +
+      '<input type="text" name="name" id="ffresponsename" size="40" /></div>' +
+      '<div class="prop block"><label>' + this.get_label('responsetext') + '</label>' +
+      '<textarea name="text" id="ffresponsetext" cols="40" rows="8"></textarea></div>' +
+      '</form>';
+
+    buttons[this.gettext('save')] = function(e) {
+      var name = $('#ffresponsename').val(),
+        text = $('#ffresponsetext').val();
+
+      if (!text) {
+        $('#ffresponsetext').select();
+        return false;
+      }
+      if (!name)
+        name = text.substring(0,40);
+
+      var lock = ref.display_message(ref.get_label('savingresponse'), 'loading');
+      ref.http_post('settings/responses', { _insert:1, _name:name, _text:text }, lock);
+      $(this).dialog('close');
+    };
+
+    buttons[this.gettext('cancel')] = function() {
+      $(this).dialog('close');
+    };
+
+    this.show_popup_dialog(html, this.gettext('savenewresponse'), buttons);
+
+    $('#ffresponsetext').val(text);
+    $('#ffresponsename').select();
+  };
+
+  this.add_response_item = function(response)
+  {
+    var key = response.key;
+    this.env.textresponses[key] = response;
+
+    // append to responses list
+    if (this.gui_objects.responseslist) {
+      var li = $('<li>').appendTo(this.gui_objects.responseslist);
+      $('<a>').addClass('insertresponse active')
+        .attr('href', '#')
+        .attr('rel', key)
+        .attr('tabindex', '0')
+        .html(this.quote_html(response.name))
+        .appendTo(li)
+        .mousedown(function(e){
+          return rcube_event.cancel(e);
+        })
+        .bind('mouseup keypress', function(e){
+          if (e.type == 'mouseup' || rcube_event.get_keycode(e) == 13) {
+            ref.command('insert-response', $(this).attr('rel'));
+            $(document.body).trigger('mouseup');  // hides the menu
+            return rcube_event.cancel(e);
+          }
+        });
+    }
+  };
+
+  this.edit_responses = function()
+  {
+    // TODO: implement inline editing of responses
+  };
+
+  this.delete_response = function(key)
+  {
+    if (!key && this.responses_list) {
+      var selection = this.responses_list.get_selection();
+      key = selection[0];
+    }
+
+    // submit delete request
+    if (key && confirm(this.get_label('deleteresponseconfirm'))) {
+      this.http_post('settings/delete-response', { _key: key }, false);
+      return true;
+    }
+
+    return false;
+  };
+
   this.stop_spellchecking = function()
   {
     var ed;
@@ -3293,20 +3792,51 @@
   {
     var rc;
 
-    if (!this.env.draft_id && id && (rc = this.opener())) {
-      // refresh the drafts folder in opener window
-      if (rc.env.task == 'mail' && rc.env.action == '' && rc.env.mailbox == this.env.drafts_mailbox)
-        rc.command('checkmail');
+    if (id && id != this.env.draft_id) {
+      if (rc = this.opener()) {
+        // refresh the drafts folder in opener window
+        if (rc.env.task == 'mail' && rc.env.action == '' && rc.env.mailbox == this.env.drafts_mailbox)
+          rc.command('checkmail');
+      }
+
+      this.env.draft_id = id;
+      $("input[name='_draft_saveid']").val(id);
+
+      // reset history of hidden iframe used for saving draft (#1489643)
+      // but don't do this on timer-triggered draft-autosaving (#1489789)
+      if (window.frames['savetarget'] && window.frames['savetarget'].history && !this.draft_autosave_submit) {
+        window.frames['savetarget'].history.back();
+      }
+
+      this.draft_autosave_submit = false;
     }
 
-    this.env.draft_id = id;
-    $("input[name='_draft_saveid']").val(id);
+    // always remove local copy upon saving as draft
+    this.remove_compose_data(this.env.compose_id);
   };
 
   this.auto_save_start = function()
   {
     if (this.env.draft_autosave)
-      this.save_timer = setTimeout(function(){ ref.command("savedraft"); }, this.env.draft_autosave * 1000);
+      this.draft_autosave_submit = false;
+      this.save_timer = setTimeout(function(){
+          ref.draft_autosave_submit = true;  // set auto-saved flag (#1489789)
+          ref.command("savedraft");
+      }, this.env.draft_autosave * 1000);
+
+    // save compose form content to local storage every 5 seconds
+    if (!this.local_save_timer && window.localStorage) {
+      // track typing activity and only save on changes
+      this.compose_type_activity = this.compose_type_activity_last = 0;
+      $(document).bind('keypress', function(e){ ref.compose_type_activity++; });
+
+      this.local_save_timer = setInterval(function(){
+        if (ref.compose_type_activity > ref.compose_type_activity_last) {
+          ref.save_compose_form_local();
+          ref.compose_type_activity_last = ref.compose_type_activity;
+        }
+      }, 5000);
+    }
 
     // Unlock interface now that saving is complete
     this.busy = false;
@@ -3336,6 +3866,118 @@
     return str;
   };
 
+  // store the contents of the compose form to localstorage
+  this.save_compose_form_local = function()
+  {
+    var formdata = { session:this.env.session_id, changed:new Date().getTime() },
+      ed, empty = true;
+
+    // get fresh content from editor
+    if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody))) {
+      tinyMCE.triggerSave();
+    }
+
+    if (this.env.draft_id) {
+      formdata.draft_id = this.env.draft_id;
+    }
+    if (this.env.reply_msgid) {
+      formdata.reply_msgid = this.env.reply_msgid;
+    }
+
+    $('input, select, textarea', this.gui_objects.messageform).each(function(i, elem) {
+      switch (elem.tagName.toLowerCase()) {
+        case 'input':
+          if (elem.type == 'button' || elem.type == 'submit' || (elem.type == 'hidden' && elem.name != '_is_html')) {
+            break;
+          }
+          formdata[elem.name] = elem.type != 'checkbox' || elem.checked ? $(elem).val() : '';
+
+          if (formdata[elem.name] != '' && elem.type != 'hidden')
+            empty = false;
+          break;
+
+        case 'select':
+          formdata[elem.name] = $('option:checked', elem).val();
+          break;
+
+        default:
+          formdata[elem.name] = $(elem).val();
+          if (formdata[elem.name] != '')
+            empty = false;
+      }
+    });
+
+    if (window.localStorage && !empty) {
+      var index = this.local_storage_get_item('compose.index', []),
+        key = this.env.compose_id;
+
+        if ($.inArray(key, index) < 0) {
+          index.push(key);
+        }
+        this.local_storage_set_item('compose.' + key, formdata, true);
+        this.local_storage_set_item('compose.index', index);
+    }
+  };
+
+  // write stored compose data back to form
+  this.restore_compose_form = function(key, html_mode)
+  {
+    var ed, formdata = this.local_storage_get_item('compose.' + key, true);
+
+    if (formdata && typeof formdata == 'object') {
+      $.each(formdata, function(k, value) {
+        if (k[0] == '_') {
+          var elem = $("*[name='"+k+"']");
+          if (elem[0] && elem[0].type == 'checkbox') {
+            elem.prop('checked', value != '');
+          }
+          else {
+            elem.val(value);
+          }
+        }
+      });
+
+      // initialize HTML editor
+      if (formdata._is_html == '1') {
+        if (!html_mode) {
+          tinyMCE.execCommand('mceAddControl', false, this.env.composebody);
+          this.triggerEvent('aftertoggle-editor', { mode:'html' });
+        }
+      }
+      else if (html_mode) {
+        tinyMCE.execCommand('mceRemoveControl', false, this.env.composebody);
+        this.triggerEvent('aftertoggle-editor', { mode:'plain' });
+      }
+    }
+  };
+
+  // remove stored compose data from localStorage
+  this.remove_compose_data = function(key)
+  {
+    if (window.localStorage) {
+      var index = this.local_storage_get_item('compose.index', []);
+
+      if ($.inArray(key, index) >= 0) {
+        this.local_storage_remove_item('compose.' + key);
+        this.local_storage_set_item('compose.index', $.grep(index, function(val,i) { return val != key; }));
+      }
+    }
+  };
+
+  // clear all stored compose data of this user
+  this.clear_compose_data = function()
+  {
+    if (window.localStorage) {
+      var i, index = this.local_storage_get_item('compose.index', []);
+
+      for (i=0; i < index.length; i++) {
+        this.local_storage_remove_item('compose.' + index[i]);
+      }
+      this.local_storage_remove_item('compose.index');
+    }
+  }
+
+
   this.change_identity = function(obj, show_sig)
   {
     if (!obj || !obj.options)
@@ -3344,12 +3986,57 @@
     if (!show_sig)
       show_sig = this.env.show_sig;
 
-    var cursor_pos, p = -1,
+    // first function execution
+    if (!this.env.identities_initialized) {
+      this.env.identities_initialized = true;
+      if (this.env.show_sig_later)
+        this.env.show_sig = true;
+      if (this.env.opened_extwin)
+        return;
+    }
+
+    var i, rx, cursor_pos, p = -1,
       id = obj.options[obj.selectedIndex].value,
       input_message = $("[name='_message']"),
       message = input_message.val(),
       is_html = ($("input[name='_is_html']").val() == '1'),
-      sig = this.env.identity;
+      sig = this.env.identity,
+      delim = this.env.recipients_separator,
+      rx_delim = RegExp.escape(delim),
+      headers = ['replyto', 'bcc'];
+
+    // update reply-to/bcc fields with addresses defined in identities
+    for (i in headers) {
+      var key = headers[i],
+        old_val = sig && this.env.identities[sig] ? this.env.identities[sig][key] : '',
+        new_val = id && this.env.identities[id] ? this.env.identities[id][key] : '',
+        input = $('[name="_'+key+'"]'), input_val = input.val();
+
+      // remove old address(es)
+      if (old_val && input_val) {
+        rx = new RegExp('\\s*' + RegExp.escape(old_val) + '\\s*');
+        input_val = input_val.replace(rx, '');
+      }
+
+      // cleanup
+      rx = new RegExp(rx_delim + '\\s*' + rx_delim, 'g');
+      input_val = String(input_val).replace(rx, delim);
+      rx = new RegExp('^[\\s' + rx_delim + ']+');
+      input_val = input_val.replace(rx, '');
+
+      // add new address(es)
+      if (new_val && input_val.indexOf(new_val) == -1 && input_val.indexOf(new_val.replace(/"/g, '')) == -1) {
+        if (input_val) {
+          rx = new RegExp('[' + rx_delim + '\\s]+$')
+          input_val = input_val.replace(rx, '') + delim + ' ';
+        }
+
+        input_val += new_val + delim + ' ';
+      }
+
+      if (old_val || new_val)
+        input.val(input_val).change();
+    }
 
     // enable manual signature insert
     if (this.env.signatures && this.env.signatures[id]) {
@@ -3446,14 +4133,15 @@
     }
 
     this.env.identity = id;
+    this.triggerEvent('change_identity');
     return true;
   };
 
-  // upload attachment file
-  this.upload_file = function(form)
+  // upload (attachment) file
+  this.upload_file = function(form, action)
   {
     if (!form)
-      return false;
+      return;
 
     // count files and size on capable browser
     var size = 0, numfiles = 0;
@@ -3474,10 +4162,10 @@
     if (numfiles) {
       if (this.env.max_filesize && this.env.filesizeerror && size > this.env.max_filesize) {
         this.display_message(this.env.filesizeerror, 'error');
-        return;
+        return false;
       }
 
-      var frame_name = this.async_upload_form(form, 'upload', function(e) {
+      var frame_name = this.async_upload_form(form, action || 'upload', function(e) {
         var d, content = '';
         try {
           if (this.contentDocument) {
@@ -3508,11 +4196,11 @@
       if (this.env.upload_progress_time) {
         this.upload_progress_start('upload', ts);
       }
-    }
 
-    // set reference to the form object
-    this.gui_objects.attachmentform = form;
-    return true;
+      // set reference to the form object
+      this.gui_objects.attachmentform = form;
+      return true;
+    }
   };
 
   // add file name to attachment list
@@ -3529,7 +4217,12 @@
       att.html = '<a title="'+this.get_label('cancel')+'" onclick="return rcmail.cancel_attachment_upload(\''+name+'\', \''+att.frame+'\');" href="#cancelupload" class="cancelupload">'
         + (this.env.cancelicon ? '<img src="'+this.env.cancelicon+'" alt="" />' : this.get_label('cancel')) + '</a>' + att.html;
 
-    var indicator, li = $('<li>').attr('id', name).addClass(att.classname).html(att.html);
+    var indicator, li = $('<li>');
+
+    li.attr('id', name)
+      .addClass(att.classname)
+      .html(att.html)
+      .on('mouseover', function() { rcube_webmail.long_subject_title_ex(this); });
 
     // replace indicator's li
     if (upload_id && (indicator = document.getElementById(upload_id))) {
@@ -3549,8 +4242,10 @@
 
   this.remove_from_attachment_list = function(name)
   {
-    delete this.env.attachments[name];
-    $('#'+name).remove();
+    if (this.env.attachments) {
+      delete this.env.attachments[name];
+      $('#'+name).remove();
+    }
   };
 
   this.remove_attachment = function(name)
@@ -3623,15 +4318,32 @@
       r = this.http_request(action, url, lock);
 
       this.env.qsearch = {lock: lock, request: r};
+      this.enable_command('set-listmode', this.env.threads && (this.env.search_scope || 'base') == 'base');
+
+      return true;
     }
+
+    return false;
+  };
+
+  this.continue_search = function(request_id)
+  {
+    var lock = ref.set_busy(true, 'stillsearching');
+
+    setTimeout(function(){
+      var url = ref.search_params();
+      url._continue = request_id;
+      ref.env.qsearch = { lock: lock, request: ref.http_request('search', url, lock) };
+    }, 100);
   };
 
   // build URL params for search
-  this.search_params = function(search, filter)
+  this.search_params = function(search, filter, smods)
   {
     var n, url = {}, mods_arr = [],
       mods = this.env.search_mods,
-      mbox = this.env.mailbox;
+      scope = this.env.search_scope || 'base',
+      mbox = scope == 'all' ? '*' : this.env.mailbox;
 
     if (!filter && this.gui_objects.search_filter)
       filter = this.gui_objects.search_filter.value;
@@ -3645,17 +4357,19 @@
     if (search) {
       url._q = search;
 
-      if (mods && this.message_list)
-        mods = mods[mbox] ? mods[mbox] : mods['*'];
+      if (!smods && mods && this.message_list)
+        smods = mods[mbox] || mods['*'];
 
-      if (mods) {
-        for (n in mods)
+      if (smods) {
+        for (n in smods)
           mods_arr.push(n);
         url._headers = mods_arr.join(',');
       }
     }
 
-    if (mbox)
+    if (scope)
+      url._scope = scope;
+    if (mbox && scope != 'all')
       url._mbox = mbox;
 
     return url;
@@ -3673,9 +4387,45 @@
     this.env.qsearch = null;
     this.env.search_request = null;
     this.env.search_id = null;
+
+    this.enable_command('set-listmode', this.env.threads);
   };
 
-  this.sent_successfully = function(type, msg, target)
+  this.set_searchscope = function(scope)
+  {
+    var old = this.env.search_scope;
+    this.env.search_scope = scope;
+
+    // re-send search query with new scope
+    if (scope != old && this.env.search_request) {
+      if (!this.qsearch(this.gui_objects.qsearchbox.value) && this.env.search_filter && this.env.search_filter != 'ALL')
+        this.filter_mailbox(this.env.search_filter);
+      if (scope != 'all')
+        this.select_folder(this.env.mailbox, '', true);
+    }
+  };
+
+  this.set_searchmods = function(mods)
+  {
+    var mbox = rcmail.env.mailbox,
+      scope = this.env.search_scope || 'base';
+
+    if (scope == 'all')
+      mbox = '*';
+
+    if (!this.env.search_mods)
+      this.env.search_mods = {};
+
+    this.env.search_mods[mbox] = mods;
+  };
+
+  this.is_multifolder_listing = function()
+  {
+    return typeof this.env.multifolder_listing != 'undefined' ? this.env.multifolder_listing :
+      (this.env.search_request && (this.env.search_scope || 'base') != 'base');
+  }
+
+  this.sent_successfully = function(type, msg, folders)
   {
     this.display_message(msg, type);
 
@@ -3684,9 +4434,11 @@
       this.lock_form(this.gui_objects.messageform);
       if (rc) {
         rc.display_message(msg, type);
-        // refresh the folder where sent message was saved
-        if (target && rc.env.task == 'mail' && rc.env.action == '' && rc.env.mailbox == target)
-          rc.command('checkmail');
+        // refresh the folder where sent message was saved or replied message comes from
+        if (folders && rc.env.task == 'mail' && rc.env.action == '' && $.inArray(rc.env.mailbox, folders) >= 0) {
+          // @TODO: try with 'checkmail' here when #1485186 is fixed. See also #1489249.
+          rc.command('list');
+        }
       }
       setTimeout(function(){ window.close() }, 1000);
     }
@@ -3715,7 +4467,7 @@
       case 38:  // arrow up
       case 40:  // arrow down
         if (!this.ksearch_visible())
-          break;
+          return;
 
         var dir = key==38 ? 1 : 0;
 
@@ -3750,8 +4502,7 @@
 
       case 37:  // left
       case 39:  // right
-        if (mod != SHIFT_KEY)
-          return;
+        return;
     }
 
     // start timer
@@ -3797,10 +4548,14 @@
     this.ksearch_destroy();
 
     // insert all members of a group
-    if (typeof this.env.contacts[id] === 'object' && this.env.contacts[id].id) {
+    if (typeof this.env.contacts[id] === 'object' && this.env.contacts[id].type == 'group') {
       insert += this.env.contacts[id].name + this.env.recipients_delimiter;
       this.group2expand[this.env.contacts[id].id] = $.extend({ input: this.ksearch_input }, this.env.contacts[id]);
       this.http_request('mail/group-expand', {_source: this.env.contacts[id].source, _gid: this.env.contacts[id].id}, false);
+    }
+    else if (typeof this.env.contacts[id] === 'object' && this.env.contacts[id].name) {
+      insert = this.env.contacts[id].name + this.env.recipients_delimiter;
+      trigger = true;
     }
     else if (typeof this.env.contacts[id] === 'string') {
       insert = this.env.contacts[id] + this.env.recipients_delimiter;
@@ -3814,8 +4569,10 @@
     if (this.ksearch_input.setSelectionRange)
       this.ksearch_input.setSelectionRange(cpos, cpos);
 
-    if (trigger)
-      this.triggerEvent('autocomplete_insert', { field:this.ksearch_input, insert:insert });
+    if (trigger) {
+      this.triggerEvent('autocomplete_insert', { field:this.ksearch_input, insert:insert, data:this.env.contacts[id] });
+      this.compose_type_activity++;
+    }
   };
 
   this.replace_group_recipients = function(id, recipients)
@@ -3824,6 +4581,7 @@
       this.group2expand[id].input.value = this.group2expand[id].input.value.replace(this.group2expand[id].name, recipients);
       this.triggerEvent('autocomplete_insert', { field:this.group2expand[id].input, insert:recipients });
       this.group2expand[id] = null;
+      this.compose_type_activity++;
     }
   };
 
@@ -3843,7 +4601,7 @@
       p = inp_value.lastIndexOf(this.env.recipients_separator, cpos-1),
       q = inp_value.substring(p+1, cpos),
       min = this.env.autocomplete_min_length,
-      ac = this.ksearch_data;
+      data = this.ksearch_data;
 
     // trim query string
     q = $.trim(q);
@@ -3870,34 +4628,26 @@
       return;
 
     // ...new search value contains old one and previous search was not finished or its result was empty
-    if (old_value && old_value.length && q.indexOf(old_value) == 0 && (!ac || ac.num <= 0) && this.env.contacts && !this.env.contacts.length)
+    if (old_value && old_value.length && q.startsWith(old_value) && (!data || data.num <= 0) && this.env.contacts && !this.env.contacts.length)
       return;
 
-    var i, lock, source, xhr, reqid = new Date().getTime(),
-      post_data = {_search: q, _id: reqid},
-      threads = props && props.threads ? props.threads : 1,
-      sources = props && props.sources ? props.sources : [],
-      action = props && props.action ? props.action : 'mail/autocomplete';
+    var sources = props && props.sources ? props.sources : [''];
+    var reqid = this.multi_thread_http_request({
+      items: sources,
+      threads: props && props.threads ? props.threads : 1,
+      action:  props && props.action ? props.action : 'mail/autocomplete',
+      postdata: { _search:q, _source:'%s' },
+      lock: this.display_message(this.get_label('searching'), 'loading')
+    });
 
-    this.ksearch_data = {id: reqid, sources: sources.slice(), action: action,
-      locks: [], requests: [], num: sources.length};
-
-    for (i=0; i<threads; i++) {
-      source = this.ksearch_data.sources.shift();
-      if (threads > 1 && source === undefined)
-        break;
-
-      post_data._source = source ? source : '';
-      lock = this.display_message(this.get_label('searching'), 'loading');
-      xhr = this.http_post(action, post_data, lock);
-
-      this.ksearch_data.locks.push(lock);
-      this.ksearch_data.requests.push(xhr);
-    }
+    this.ksearch_data = { id:reqid, sources:sources.slice(), num:sources.length };
   };
 
   this.ksearch_query_results = function(results, search, reqid)
   {
+    // trigger multi-thread http response callback
+    this.multi_thread_http_response(results, reqid);
+
     // search stopped in meantime?
     if (!this.ksearch_value)
       return;
@@ -3907,9 +4657,8 @@
       return;
 
     // display search results
-    var i, len, ul, li, text, init,
+    var i, len, ul, li, text, type, init,
       value = this.ksearch_value,
-      data = this.ksearch_data,
       maxlen = this.env.autocomplete_max ? this.env.autocomplete_max : 15;
 
     // create results pane if not present
@@ -3941,11 +4690,13 @@
     if (results && (len = results.length)) {
       for (i=0; i < len && maxlen > 0; i++) {
         text = typeof results[i] === 'object' ? results[i].name : results[i];
+        type = typeof results[i] === 'object' ? results[i].type : '';
         li = document.createElement('LI');
         li.innerHTML = text.replace(new RegExp('('+RegExp.escape(value)+')', 'ig'), '##$1%%').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/##([^%]+)%%/g, '<b>$1</b>');
         li.onmouseover = function(){ ref.ksearch_select(this); };
         li.onmouseup = function(){ ref.ksearch_click(this) };
         li._rcm_id = this.env.contacts.length + i;
+        if (type) li.className = type;
         ul.appendChild(li);
         maxlen -= 1;
       }
@@ -3963,27 +4714,8 @@
     if (len)
       this.env.contacts = this.env.contacts.concat(results);
 
-    // run next parallel search
-    if (data.id == reqid) {
-      data.num--;
-      if (maxlen > 0 && data.sources.length) {
-        var lock, xhr, source = data.sources.shift(), post_data;
-        if (source) {
-          post_data = {_search: value, _id: reqid, _source: source};
-          lock = this.display_message(this.get_label('searching'), 'loading');
-          xhr = this.http_post(data.action, post_data, lock);
-
-          this.ksearch_data.locks.push(lock);
-          this.ksearch_data.requests.push(xhr);
-        }
-      }
-      else if (!maxlen) {
-        if (!this.ksearch_msg)
-          this.ksearch_msg = this.display_message(this.get_label('autocompletemore'));
-        // abort pending searches
-        this.ksearch_abort();
-      }
-    }
+    if (this.ksearch_data.id == reqid)
+      this.ksearch_data.num--;
   };
 
   this.ksearch_click = function(node)
@@ -4018,7 +4750,8 @@
   // Clears autocomplete data/requests
   this.ksearch_destroy = function()
   {
-    this.ksearch_abort();
+    if (this.ksearch_data)
+      this.multi_thread_request_abort(this.ksearch_data.id);
 
     if (this.ksearch_info)
       this.hide_message(this.ksearch_info);
@@ -4029,18 +4762,6 @@
     this.ksearch_data = null;
     this.ksearch_info = null;
     this.ksearch_msg = null;
-  }
-
-  // Aborts pending autocomplete requests
-  this.ksearch_abort = function()
-  {
-    var i, len, ac = this.ksearch_data;
-
-    if (!ac)
-      return;
-
-    for (i=0, len=ac.locks.length; i<len; i++)
-      this.abort_request({request: ac.requests[i], lock: ac.locks[i]});
   };
 
 
@@ -4059,43 +4780,55 @@
     if (this.preview_timer)
       clearTimeout(this.preview_timer);
 
-    var n, id, sid, ref = this, writable = false,
+    var n, id, sid, contact, writable = false,
       source = this.env.source ? this.env.address_sources[this.env.source] : null;
 
+    // we don't have dblclick handler here, so use 200 instead of this.dblclick_time
     if (id = list.get_single_selection())
       this.preview_timer = setTimeout(function(){ ref.load_contact(id, 'show'); }, 200);
     else if (this.env.contentframe)
       this.show_contentframe(false);
 
     if (list.selection.length) {
+      list.draggable = false;
+
       // no source = search result, we'll need to detect if any of
       // selected contacts are in writable addressbook to enable edit/delete
       // we'll also need to know sources used in selection for copy
       // and group-addmember operations (drag&drop)
       this.env.selection_sources = [];
-      if (!source) {
-        for (n in list.selection) {
+
+      if (source) {
+        this.env.selection_sources.push(this.env.source);
+      }
+
+      for (n in list.selection) {
+        contact = list.data[list.selection[n]];
+        if (!source) {
           sid = String(list.selection[n]).replace(/^[^-]+-/, '');
           if (sid && this.env.address_sources[sid]) {
-            writable = writable || !this.env.address_sources[sid].readonly;
+            writable = writable || (!this.env.address_sources[sid].readonly && !contact.readonly);
             this.env.selection_sources.push(sid);
           }
         }
-        this.env.selection_sources = $.unique(this.env.selection_sources);
+        else {
+          writable = writable || (!source.readonly && !contact.readonly);
+        }
+
+        if (contact._type != 'group')
+          list.draggable = true;
       }
-      else {
-        this.env.selection_sources.push(this.env.source);
-        writable = !source.readonly;
-      }
+
+      this.env.selection_sources = $.unique(this.env.selection_sources);
     }
 
     // if a group is currently selected, and there is at least one contact selected
     // thend we can enable the group-remove-selected command
-    this.enable_command('group-remove-selected', this.env.group && list.selection.length > 0);
+    this.enable_command('group-remove-selected', this.env.group && list.selection.length > 0 && writable);
     this.enable_command('compose', this.env.group || list.selection.length > 0);
-    this.enable_command('export-selected', list.selection.length > 0);
+    this.enable_command('export-selected', 'copy', list.selection.length > 0);
     this.enable_command('edit', id && writable);
-    this.enable_command('delete', list.selection.length && writable);
+    this.enable_command('delete', 'move', list.selection.length > 0 && writable);
 
     return false;
   };
@@ -4123,10 +4856,28 @@
     else if (!this.env.search_request)
       folder = group ? 'G'+src+group : src;
 
-    this.select_folder(folder, '', true);
-
     this.env.source = src;
     this.env.group = group;
+
+    // truncate groups listing stack
+    var index = $.inArray(this.env.group, this.env.address_group_stack);
+    if (index < 0)
+      this.env.address_group_stack = [];
+    else
+      this.env.address_group_stack = this.env.address_group_stack.slice(0,index);
+
+    // make sure the current group is on top of the stack
+    if (this.env.group) {
+      this.env.address_group_stack.push(this.env.group);
+
+      // mark the first group on the stack as selected in the directory list
+      folder = 'G'+src+this.env.address_group_stack[0];
+    }
+    else if (this.gui_objects.addresslist_title) {
+        $(this.gui_objects.addresslist_title).html(this.get_label('contacts'));
+    }
+
+    this.select_folder(folder, '', true);
 
     // load contacts remotely
     if (this.gui_objects.contactslist) {
@@ -4182,16 +4933,38 @@
 
   this.list_contacts_clear = function()
   {
+    this.contact_list.data = {};
     this.contact_list.clear(true);
     this.show_contentframe(false);
-    this.enable_command('delete', false);
+    this.enable_command('delete', 'move', 'copy', false);
     this.enable_command('compose', this.env.group ? true : false);
+  };
+
+  this.set_group_prop = function(prop)
+  {
+    if (this.gui_objects.addresslist_title) {
+      var boxtitle = $(this.gui_objects.addresslist_title).html('');  // clear contents
+
+      // add link to pop back to parent group
+      if (this.env.address_group_stack.length > 1) {
+        $('<a href="#list">...</a>')
+          .addClass('poplink')
+          .appendTo(boxtitle)
+          .click(function(e){ return ref.command('popgroup','',this); });
+        boxtitle.append('&nbsp;&raquo;&nbsp;');
+      }
+
+      boxtitle.append($('<span>').text(prop.name));
+    }
+
+    this.triggerEvent('groupupdate', prop);
   };
 
   // load contact record
   this.load_contact = function(cid, action, framed)
   {
-    var win, url = {}, target = window;
+    var win, url = {}, target = window,
+      rec = this.contact_list ? this.contact_list.data[cid] : null;
 
     if (win = this.get_frame_window(this.env.contentframe)) {
       url._framed = 1;
@@ -4201,7 +4974,9 @@
       // load dummy content, unselect selected row(s)
       if (!cid)
         this.contact_list.clear_selection();
-      this.enable_command('delete', 'compose', 'export-selected', cid);
+
+      this.enable_command('compose', rec && rec.email);
+      this.enable_command('export-selected', rec && rec._type != 'group');
     }
     else if (framed)
       return false;
@@ -4231,14 +5006,38 @@
     this.http_post('group-'+what+'members', post_data, lock);
   };
 
-  // copy a contact to the specified target (group or directory)
-  this.copy_contact = function(cid, to)
+  this.contacts_drag_menu = function(e, to)
+  {
+    var dest = to.type == 'group' ? to.source : to.id,
+      source = this.env.source;
+
+    if (!this.env.address_sources[dest] || this.env.address_sources[dest].readonly)
+      return true;
+
+    // search result may contain contacts from many sources, but if there is only one...
+    if (source == '' && this.env.selection_sources.length == 1)
+      source = this.env.selection_sources[0];
+
+    if (to.type == 'group' && dest == source) {
+      var cid = this.contact_list.get_selection().join(',');
+      this.group_member_change('add', cid, dest, to.id);
+      return true;
+    }
+    // move action is not possible, "redirect" to copy if menu wasn't requested
+    else if (!this.commands.move && rcube_event.get_modifier(e) != SHIFT_KEY) {
+      this.copy_contacts(to);
+      return true;
+    }
+
+    return this.drag_menu(e, to);
+  };
+
+  // copy contact(s) to the specified target (group or directory)
+  this.copy_contacts = function(to)
   {
     var n, dest = to.type == 'group' ? to.source : to.id,
       source = this.env.source,
-      group = this.env.group ? this.env.group : '';
-
-    if (!cid)
+      group = this.env.group ? this.env.group : '',
       cid = this.contact_list.get_selection().join(',');
 
     if (!cid || !this.env.address_sources[dest] || this.env.address_sources[dest].readonly)
@@ -4251,13 +5050,12 @@
     // tagret is a group
     if (to.type == 'group') {
       if (dest == source)
-        this.group_member_change('add', cid, dest, to.id);
-      else {
-        var lock = this.display_message(this.get_label('copyingcontact'), 'loading'),
-          post_data = {_cid: cid, _source: this.env.source, _to: dest, _togid: to.id, _gid: group};
+        return;
 
-        this.http_post('copy', post_data, lock);
-      }
+      var lock = this.display_message(this.get_label('copyingcontact'), 'loading'),
+        post_data = {_cid: cid, _source: this.env.source, _to: dest, _togid: to.id, _gid: group};
+
+      this.http_post('copy', post_data, lock);
     }
     // target is an addressbook
     else if (to.id != source) {
@@ -4268,19 +5066,53 @@
     }
   };
 
-  this.delete_contacts = function()
+  // move contact(s) to the specified target (group or directory)
+  this.move_contacts = function(to)
   {
-    var selection = this.contact_list.get_selection(),
-      undelete = this.env.source && this.env.address_sources[this.env.source].undelete;
+    var dest = to.type == 'group' ? to.source : to.id,
+      source = this.env.source,
+      group = this.env.group ? this.env.group : '';
 
-    // exit if no mailbox specified or if selection is empty
-    if (!(selection.length || this.env.cid) || (!undelete && !confirm(this.get_label('deletecontactconfirm'))))
+    if (!this.env.address_sources[dest] || this.env.address_sources[dest].readonly)
       return;
 
-    var id, n, a_cids = [],
-      post_data = {_source: this.env.source, _from: (this.env.action ? this.env.action : '')},
-      lock = this.display_message(this.get_label('contactdeleting'), 'loading');
+    // search result may contain contacts from many sources, but if there is only one...
+    if (source == '' && this.env.selection_sources.length == 1)
+      source = this.env.selection_sources[0];
 
+    if (to.type == 'group') {
+      if (dest == source)
+        return;
+
+      this._with_selected_contacts('move', {_to: dest, _togid: to.id});
+    }
+    // target is an addressbook
+    else if (to.id != source)
+      this._with_selected_contacts('move', {_to: to.id});
+  };
+
+  // delete contact(s)
+  this.delete_contacts = function()
+  {
+    var undelete = this.env.source && this.env.address_sources[this.env.source].undelete;
+
+    if (!undelete && !confirm(this.get_label('deletecontactconfirm')))
+      return;
+
+    return this._with_selected_contacts('delete');
+  };
+
+  this._with_selected_contacts = function(action, post_data)
+  {
+    var selection = this.contact_list ? this.contact_list.get_selection() : [];
+
+    // exit if no mailbox specified or if selection is empty
+    if (!selection.length && !this.env.cid)
+      return;
+
+    var n, a_cids = [],
+      label = action == 'delete' ? 'contactdeleting' : 'movingcontact',
+      lock = this.display_message(this.get_label(label), 'loading');
     if (this.env.cid)
       a_cids.push(this.env.cid);
     else {
@@ -4295,6 +5127,11 @@
         this.show_contentframe(false);
     }
 
+    if (!post_data)
+      post_data = {};
+
+    post_data._source = this.env.source;
+    post_data._from = this.env.action;
     post_data._cid = a_cids.join(',');
 
     if (this.env.group)
@@ -4305,13 +5142,13 @@
       post_data._search = this.env.search_request;
 
     // send request to server
-    this.http_post('delete', post_data, lock)
+    this.http_post(action, post_data, lock)
 
     return true;
   };
 
   // update a contact record in the list
-  this.update_contact_row = function(cid, cols_arr, newcid, source)
+  this.update_contact_row = function(cid, cols_arr, newcid, source, data)
   {
     var c, row, list = this.contact_list;
 
@@ -4325,10 +5162,11 @@
     }
 
     list.update_row(cid, cols_arr, newcid, true);
+    list.data[cid] = data;
   };
 
   // add row to contacts list
-  this.add_contact_row = function(cid, cols, classes)
+  this.add_contact_row = function(cid, cols, classes, data)
   {
     if (!this.gui_objects.contactslist)
       return false;
@@ -4350,6 +5188,8 @@
       row.cols.push(col);
     }
 
+    // store data in list member
+    list.data[cid] = data;
     list.insert_row(row);
 
     this.enable_command('export', list.rowcount > 0);
@@ -4357,7 +5197,7 @@
 
   this.init_contact_form = function()
   {
-    var ref = this, col;
+    var col;
 
     if (this.env.coltypes) {
       this.set_photo_actions($('#ff_photo').val());
@@ -4388,8 +5228,6 @@
       });
       $('input.datepicker').datepicker();
     }
-
-    $("input[type='text']:visible").first().focus();
 
     // Submit search form on Enter
     if (this.env.action == 'search')
@@ -4435,6 +5273,7 @@
   {
     var key = 'G'+prop.source+prop.id;
     if (this.treelist.remove(key)) {
+      this.triggerEvent('group_delete', { source:prop.source, id:prop.id });
       delete this.env.contactfolders[key];
       delete this.env.contactgroups[key];
     }
@@ -4776,7 +5615,7 @@
   this.replace_contact_photo = function(id)
   {
     var img_src = id == '-del-' ? this.env.photo_placeholder :
-      this.env.comm_path + '&_action=photo&_source=' + this.env.source + '&_cid=' + this.env.cid + '&_photo=' + id;
+      this.env.comm_path + '&_action=photo&_source=' + this.env.source + '&_cid=' + (this.env.cid || 0) + '&_photo=' + id;
 
     this.set_photo_actions(id);
     $(this.gui_objects.contactphoto).children('img').attr('src', img_src);
@@ -4932,9 +5771,8 @@
       target = win;
     }
 
-    if (action && (id || action == 'add-identity')) {
-      this.set_busy(true);
-      this.location_href(url, target);
+    if (id || action == 'add-identity') {
+      this.location_href(url, target, true);
     }
 
     return true;
@@ -4971,6 +5809,35 @@
     }
   };
 
+  this.update_response_row = function(response, oldkey)
+  {
+    var list = this.responses_list;
+
+    if (list && oldkey) {
+      list.update_row(oldkey, [ response.name ], response.key, true);
+    }
+    else if (list) {
+      list.insert_row({ id:'rcmrow'+response.key, cols:[ { className:'name', innerHTML:response.name } ] });
+      list.select(response.key);
+    }
+  };
+
+  this.remove_response = function(key)
+  {
+    var frame;
+
+    if (this.env.textresponses) {
+      delete this.env.textresponses[key];
+    }
+
+    if (this.responses_list) {
+      this.responses_list.remove_row(key);
+      if (this.env.contentframe && (frame = this.get_frame_window(this.env.contentframe))) {
+        frame.location.href = this.env.blankpage;
+      }
+    }
+  };
+
 
   /*********************************************************/
   /*********        folder manager methods         *********/
@@ -4978,27 +5845,30 @@
 
   this.init_subscription_list = function()
   {
-    var p = this;
+    var delim = RegExp.escape(this.env.delimiter);
+
+    this.last_sub_rx = RegExp('['+delim+']?[^'+delim+']+$');
+
     this.subscription_list = new rcube_list_widget(this.gui_objects.subscriptionlist,
       {multiselect:false, draggable:true, keyboard:false, toggleselect:true});
-    this.subscription_list.addEventListener('select', function(o){ p.subscription_select(o); });
-    this.subscription_list.addEventListener('dragstart', function(o){ p.drag_active = true; });
-    this.subscription_list.addEventListener('dragend', function(o){ p.subscription_move_folder(o); });
-    this.subscription_list.row_init = function (row) {
-      row.obj.onmouseover = function() { p.focus_subscription(row.id); };
-      row.obj.onmouseout = function() { p.unfocus_subscription(row.id); };
-    };
-    this.subscription_list.init();
+    this.subscription_list
+      .addEventListener('select', function(o){ ref.subscription_select(o); })
+      .addEventListener('dragstart', function(o){ ref.drag_active = true; })
+      .addEventListener('dragend', function(o){ ref.subscription_move_folder(o); })
+      .addEventListener('initrow', function (row) {
+        row.obj.onmouseover = function() { ref.focus_subscription(row.id); };
+        row.obj.onmouseout = function() { ref.unfocus_subscription(row.id); };
+      })
+      .init();
+
     $('#mailboxroot')
-      .mouseover(function(){ p.focus_subscription(this.id); })
-      .mouseout(function(){ p.unfocus_subscription(this.id); })
+      .mouseover(function(){ ref.focus_subscription(this.id); })
+      .mouseout(function(){ ref.unfocus_subscription(this.id); })
   };
 
   this.focus_subscription = function(id)
   {
-    var row, folder,
-      delim = RegExp.escape(this.env.delimiter),
-      reg = RegExp('['+delim+']?[^'+delim+']+$');
+    var row, folder;
 
     if (this.drag_active && this.env.mailbox && (row = document.getElementById(id)))
       if (this.env.subscriptionrows[id] &&
@@ -5006,8 +5876,8 @@
       ) {
         if (this.check_droptarget(folder) &&
             !this.env.subscriptionrows[this.get_folder_row_id(this.env.mailbox)][2] &&
-            (folder != this.env.mailbox.replace(reg, '')) &&
-            (!folder.match(new RegExp('^'+RegExp.escape(this.env.mailbox+this.env.delimiter))))
+            folder != this.env.mailbox.replace(this.last_sub_rx, '') &&
+            !folder.startsWith(this.env.mailbox + this.env.delimiter)
         ) {
           this.env.dstfolder = folder;
           $(row).addClass('droptarget');
@@ -5020,7 +5890,8 @@
     var row = $('#'+id);
 
     this.env.dstfolder = null;
-    if (this.env.subscriptionrows[id] && row[0])
+
+    if (this.env.subscriptionrows[id] && row.length)
       row.removeClass('droptarget');
     else
       $(this.subscription_list.frame).removeClass('droptarget');
@@ -5046,21 +5917,20 @@
 
   this.subscription_move_folder = function(list)
   {
-    var delim = RegExp.escape(this.env.delimiter),
-      reg = RegExp('['+delim+']?[^'+delim+']+$');
-
-    if (this.env.mailbox && this.env.dstfolder !== null && (this.env.dstfolder != this.env.mailbox) &&
-        (this.env.dstfolder != this.env.mailbox.replace(reg, ''))
+    if (this.env.mailbox && this.env.dstfolder !== null &&
+        this.env.dstfolder != this.env.mailbox &&
+        this.env.dstfolder != this.env.mailbox.replace(this.last_sub_rx, '')
     ) {
-      reg = new RegExp('[^'+delim+']*['+delim+']', 'g');
-      var basename = this.env.mailbox.replace(reg, ''),
-        newname = this.env.dstfolder === '' ? basename : this.env.dstfolder+this.env.delimiter+basename;
+      var path = this.env.mailbox.split(this.env.delimiter),
+        basename = path.pop(),
+        newname = this.env.dstfolder === '' ? basename : this.env.dstfolder + this.env.delimiter + basename;
 
       if (newname != this.env.mailbox) {
         this.http_post('rename-folder', {_folder_oldname: this.env.mailbox, _folder_newname: newname}, this.set_busy(true, 'foldermoving'));
         this.subscription_list.draglayer.hide();
       }
     }
+
     this.drag_active = false;
     this.unfocus_subscription(this.get_folder_row_id(this.env.dstfolder));
   };
@@ -5089,7 +5959,7 @@
     if (!this.gui_objects.subscriptionlist)
       return false;
 
-    var row, n, i, tmp, tmp_name, folders, rowid, list = [], slist = [],
+    var row, n, i, tmp, tmp_name, rowid, folders = [], list = [], slist = [],
       tbody = this.gui_objects.subscriptionlist.tBodies[0],
       refrow = $('tr', tbody).get(1),
       id = 'rcmrow'+((new Date).getTime());
@@ -5104,8 +5974,7 @@
     row = $(refrow).clone(true);
 
     // set ID, reset css class
-    row.attr('id', id);
-    row.attr('class', class_name);
+    row.attr({id: id, 'class': class_name});
 
     // set folder name
     row.find('td:first').html(display_name);
@@ -5115,12 +5984,27 @@
       .prop({checked: subscribed ? true : false, disabled: is_protected ? true : false});
 
     // add to folder/row-ID map
-    this.env.subscriptionrows[id] = [name, display_name, 0];
+    this.env.subscriptionrows[id] = [name, display_name, false];
 
-    // sort folders, to find a place where to insert the row
-    folders = [];
-    $.each(this.env.subscriptionrows, function(k,v){ folders.push(v) });
-    folders.sort(function(a,b){ return a[0] < b[0] ? -1 : (a[0] > b[0] ? 1 : 0) });
+    // sort folders (to find a place where to insert the row)
+    // replace delimiter with \0 character to fix sorting
+    // issue where 'Abc Abc' would be placed before 'Abc/def'
+    var replace_from = RegExp(RegExp.escape(this.env.delimiter), 'g'),
+      replace_to = String.fromCharCode(0);
+
+    $.each(this.env.subscriptionrows, function(k,v) {
+      if (v.length < 4) {
+        var n = v[0];
+        n = n.replace(replace_from, replace_to);
+        v.push(n);
+      }
+      folders.push(v);
+    });
+
+    folders.sort(function(a, b) {
+      var len = a.length - 1; n1 = a[len], n2 = b[len];
+      return n1 < n2 ? -1 : 1;
+    });
 
     for (n in folders) {
       // protected folder
@@ -5133,7 +6017,7 @@
         tmp = tmp_name;
       }
       // protected folder's child
-      else if (tmp && folders[n][0].indexOf(tmp) == 0)
+      else if (tmp && folders[n][0].startsWith(tmp))
         slist.push(folders[n][0]);
       // other
       else {
@@ -5144,7 +6028,7 @@
 
     // check if subfolder of a protected folder
     for (n=0; n<slist.length; n++) {
-      if (name.indexOf(slist[n]+this.env.delimiter) == 0)
+      if (name.startsWith(slist[n] + this.env.delimiter))
         rowid = this.get_folder_row_id(slist[n]);
     }
 
@@ -5175,17 +6059,27 @@
   // replace an existing table row with a new folder line (with subfolders)
   this.replace_folder_row = function(oldfolder, newfolder, display_name, is_protected, class_name)
   {
-    if (!this.gui_objects.subscriptionlist)
+    if (!this.gui_objects.subscriptionlist) {
+      if (this.is_framed)
+        return parent.rcmail.replace_folder_row(oldfolder, newfolder, display_name, is_protected, class_name);
       return false;
+    }
 
     var i, n, len, name, dispname, oldrow, tmprow, row, level,
       tbody = this.gui_objects.subscriptionlist.tBodies[0],
       folders = this.env.subscriptionrows,
       id = this.get_folder_row_id(oldfolder),
-      regex = new RegExp('^'+RegExp.escape(oldfolder)),
+      prefix_len = oldfolder.length,
       subscribed = $('input[name="_subscribed[]"]', $('#'+id)).prop('checked'),
       // find subfolders of renamed folder
       list = this.get_subfolders(oldfolder);
+
+    // no renaming, only update class_name
+    if (oldfolder == newfolder) {
+      $('#'+id).attr('class', class_name || '');
+      this.subscription_list.focus();
+      return;
+    }
 
     // replace an existing table row
     this._remove_folder_row(id);
@@ -5207,7 +6101,7 @@
       row.after(tmprow);
       row = tmprow;
       // update folder index
-      name = name.replace(regex, newfolder);
+      name = newfolder + name.slice(prefix_len);
       $('input[name="_subscribed[]"]', row).val(name);
       this.env.subscriptionrows[id][0] = name;
       // update the name if level is changed
@@ -5256,13 +6150,13 @@
   this.get_subfolders = function(folder)
   {
     var name, list = [],
-      regex = new RegExp('^'+RegExp.escape(folder)+RegExp.escape(this.env.delimiter)),
+      prefix = folder + this.env.delimiter,
       row = $('#'+this.get_folder_row_id(folder)).get(0);
 
     while (row = row.nextSibling) {
       if (row.id) {
         name = this.env.subscriptionrows[row.id][0];
-        if (regex.test(name)) {
+        if (name && name.startsWith(prefix)) {
           list.push(row.id);
         }
         else
@@ -5383,22 +6277,19 @@
         init_button(cmd, this.buttons[cmd][i]);
       }
     }
-
-    // set active task button
-    this.set_button(this.task, 'sel');
   };
 
   // set button to a specific state
   this.set_button = function(command, state)
   {
-    var n, button, obj, a_buttons = this.buttons[command],
+    var n, button, obj, $obj, a_buttons = this.buttons[command],
       len = a_buttons ? a_buttons.length : 0;
 
     for (n=0; n<len; n++) {
       button = a_buttons[n];
       obj = document.getElementById(button.id);
 
-      if (!obj)
+      if (!obj || button.status == state)
         continue;
 
       // get default/passive setting of the button
@@ -5424,7 +6315,17 @@
       // disable/enable input buttons
       if (button.type == 'input') {
         button.status = state;
-        obj.disabled = !state;
+        obj.disabled = state == 'pas';
+      }
+      else if (button.type == 'uibutton') {
+        button.status = state;
+        $(obj).button('option', 'disabled', state == 'pas');
+      }
+      else {
+        $obj = $(obj);
+        $obj
+          .attr('tabindex', state == 'pas' || state == 'sel' ? '-1' : ($obj.attr('data-tabindex') || '0'))
+          .attr('aria-disabled', state == 'pas' || state == 'sel' ? 'true' : 'false');
       }
     }
   };
@@ -5452,46 +6353,23 @@
   // mouse over button
   this.button_over = function(command, id)
   {
-    var n, button, obj, a_buttons = this.buttons[command],
-      len = a_buttons ? a_buttons.length : 0;
-
-    for (n=0; n<len; n++) {
-      button = a_buttons[n];
-      if (button.id == id && button.status == 'act') {
-        obj = document.getElementById(button.id);
-        if (obj && button.over) {
-          if (button.type == 'image')
-            obj.src = button.over;
-          else
-            obj.className = button.over;
-        }
-      }
-    }
+    this.button_event(command, id, 'over');
   };
 
   // mouse down on button
   this.button_sel = function(command, id)
   {
-    var n, button, obj, a_buttons = this.buttons[command],
-      len = a_buttons ? a_buttons.length : 0;
-
-    for (n=0; n<len; n++) {
-      button = a_buttons[n];
-      if (button.id == id && button.status == 'act') {
-        obj = document.getElementById(button.id);
-        if (obj && button.sel) {
-          if (button.type == 'image')
-            obj.src = button.sel;
-          else
-            obj.className = button.sel;
-        }
-        this.buttons_sel[id] = command;
-      }
-    }
+    this.button_event(command, id, 'sel');
   };
 
   // mouse out of button
   this.button_out = function(command, id)
+  {
+    this.button_event(command, id, 'act');
+  };
+
+  // event of button
+  this.button_event = function(command, id, event)
   {
     var n, button, obj, a_buttons = this.buttons[command],
       len = a_buttons ? a_buttons.length : 0;
@@ -5499,12 +6377,12 @@
     for (n=0; n<len; n++) {
       button = a_buttons[n];
       if (button.id == id && button.status == 'act') {
-        obj = document.getElementById(button.id);
-        if (obj && button.act) {
-          if (button.type == 'image')
-            obj.src = button.act;
-          else
-            obj.className = button.act;
+        if (button[event] && (obj = document.getElementById(button.id))) {
+          obj[button.type == 'image' ? 'src' : 'className'] = button[event];
+        }
+
+        if (event == 'sel') {
+          this.buttons_sel[id] = command;
         }
       }
     }
@@ -5533,8 +6411,7 @@
 
     type = type ? type : 'notice';
 
-    var ref = this,
-      key = this.html_identifier(msg),
+    var key = this.html_identifier(msg),
       date = new Date(),
       id = type + date.getTime();
 
@@ -5573,13 +6450,14 @@
       this.messages[key].labels = [{'id': id, 'msg': msg}];
     }
     else {
-      obj.click(function() { return ref.hide_message(obj); });
+      obj.click(function() { return ref.hide_message(obj); })
+        .attr('role', 'alert');
     }
 
     this.triggerEvent('message', { message:msg, type:type, timeout:timeout, object:obj });
 
     if (timeout > 0)
-      setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
+      setTimeout(function() { ref.hide_message(id, type != 'loading'); }, timeout);
     return id;
   };
 
@@ -5659,36 +6537,41 @@
   };
 
   // open a jquery UI dialog with the given content
-  this.show_popup_dialog = function(html, title)
+  this.show_popup_dialog = function(html, title, buttons, options)
   {
     // forward call to parent window
     if (this.is_framed()) {
-      parent.rcmail.show_popup_dialog(html, title);
-      return;
+      return parent.rcmail.show_popup_dialog(html, title, buttons, options);
     }
 
     var popup = $('<div class="popup">')
       .html(html)
-      .dialog({
+      .dialog($.extend({
         title: title,
+        buttons: buttons,
         modal: true,
         resizable: true,
-        width: 580,
+        width: 500,
         close: function(event, ui) { $(this).remove() }
-      });
+      }, options || {}));
 
-      // resize and center popup
-      var win = $(window), w = win.width(), h = win.height(),
-        width = popup.width(), height = popup.height();
-      popup.dialog('option', { height: Math.min(h-40, height+50), width: Math.min(w-20, width+50) })
-        .dialog('option', 'position', ['center', 'center']);  // only works in a separate call (!?)
+    // resize and center popup
+    var win = $(window), w = win.width(), h = win.height(),
+      width = popup.width(), height = popup.height();
+
+    popup.dialog('option', {
+      height: Math.min(h - 40, height + 75 + (buttons ? 50 : 0)),
+      width: Math.min(w - 20, width + 36)
+    });
+
+    return popup;
   };
 
   // enable/disable buttons for page shifting
   this.set_page_buttons = function()
   {
-    this.enable_command('nextpage', 'lastpage', (this.env.pagecount > this.env.current_page));
-    this.enable_command('previouspage', 'firstpage', (this.env.current_page > 1));
+    this.enable_command('nextpage', 'lastpage', this.env.pagecount > this.env.current_page);
+    this.enable_command('previouspage', 'firstpage', this.env.current_page > 1);
   };
 
   // mark a mailbox as selected and set environment variable
@@ -5698,14 +6581,10 @@
       this.treelist.select(name);
     }
     else if (this.gui_objects.folderlist) {
-      var current_li, target_li;
-
-      if ((current_li = $('li.selected', this.gui_objects.folderlist))) {
-        current_li.removeClass('selected').addClass('unfocused');
-      }
-      if ((target_li = this.get_folder_li(name, prefix, encode))) {
-        $(target_li).removeClass('unfocused').addClass('selected');
-      }
+      $('li.selected', this.gui_objects.folderlist)
+        .removeClass('selected').addClass('unfocused');
+      $(this.get_folder_li(name, prefix, encode))
+        .removeClass('unfocused').addClass('selected');
 
       // trigger event hook
       this.triggerEvent('selectfolder', { folder:name, prefix:prefix });
@@ -5716,12 +6595,14 @@
   this.mark_folder = function(name, class_name, prefix, encode)
   {
     $(this.get_folder_li(name, prefix, encode)).addClass(class_name);
+    this.triggerEvent('markfolder', {folder: name, mark: class_name, status: true});
   };
 
   // adds a class to selected folder
   this.unmark_folder = function(name, class_name, prefix, encode)
   {
     $(this.get_folder_li(name, prefix, encode)).removeClass(class_name);
+    this.triggerEvent('markfolder', {folder: name, mark: class_name, status: false});
   };
 
   // helper method to find a folder list item
@@ -5734,47 +6615,38 @@
       name = this.html_identifier(name, encode);
       return document.getElementById(prefix+name);
     }
-
-    return null;
   };
 
   // for reordering column array (Konqueror workaround)
   // and for setting some message list global variables
-  this.set_message_coltypes = function(coltypes, repl, smart_col)
+  this.set_message_coltypes = function(listcols, repl, smart_col)
   {
     var list = this.message_list,
       thead = list ? list.thead : null,
-      cell, col, n, len, th, tr;
+      repl, cell, col, n, len, tr;
 
-    this.env.coltypes = coltypes;
+    this.env.listcols = listcols;
 
     // replace old column headers
     if (thead) {
       if (repl) {
-        th = document.createElement('thead');
+        thead.innerHTML = '';
         tr = document.createElement('tr');
 
         for (c=0, len=repl.length; c < len; c++) {
           cell = document.createElement('td');
-          cell.innerHTML = repl[c].html;
+          cell.innerHTML = repl[c].html || '';
           if (repl[c].id) cell.id = repl[c].id;
           if (repl[c].className) cell.className = repl[c].className;
           tr.appendChild(cell);
         }
-        th.appendChild(tr);
-        thead.parentNode.replaceChild(th, thead);
-        thead = th;
+        thead.appendChild(tr);
       }
 
-      for (n=0, len=this.env.coltypes.length; n<len; n++) {
-        col = this.env.coltypes[n];
+      for (n=0, len=this.env.listcols.length; n<len; n++) {
+        col = this.env.listcols[n];
         if ((cell = thead.rows[0].cells[n]) && (col == 'from' || col == 'to' || col == 'fromto')) {
-          cell.id = 'rcm'+col;
-          $('span,a', cell).text(this.get_label(col == 'fromto' ? smart_col : col));
-          // if we have links for sorting, it's a bit more complicated...
-          $('a', cell).click(function(){
-            return rcmail.command('sort', this.id.replace(/^rcm/, ''), this);
-          });
+          $(cell).attr('rel', col).find('span,a').text(this.get_label(col == 'fromto' ? smart_col : col));
         }
       }
     }
@@ -5783,18 +6655,23 @@
     this.env.flagged_col = null;
     this.env.status_col = null;
 
-    if ((n = $.inArray('subject', this.env.coltypes)) >= 0) {
+    if (this.env.coltypes.folder)
+      this.env.coltypes.folder.hidden = !(this.env.search_request || this.env.search_id) || this.env.search_scope == 'base';
+
+    if ((n = $.inArray('subject', this.env.listcols)) >= 0) {
       this.env.subject_col = n;
       if (list)
         list.subject_col = n;
     }
-    if ((n = $.inArray('flag', this.env.coltypes)) >= 0)
+    if ((n = $.inArray('flag', this.env.listcols)) >= 0)
       this.env.flagged_col = n;
-    if ((n = $.inArray('status', this.env.coltypes)) >= 0)
+    if ((n = $.inArray('status', this.env.listcols)) >= 0)
       this.env.status_col = n;
 
-    if (list)
+    if (list) {
+      list.hide_column('folder', (this.env.coltypes.folder && this.env.coltypes.folder.hidden) || $.inArray('folder', this.env.listcols) < 0);
       list.init_header();
+    }
   };
 
   // replace content of row count display
@@ -5825,6 +6702,12 @@
 
     this.triggerEvent('setquota', content);
     this.env.quota_content = content;
+  };
+
+  // update trash folder state
+  this.set_trash_count = function(count)
+  {
+    this[(count ? 'un' : '') + 'mark_folder'](this.env.trash_mailbox, 'empty', '', true);
   };
 
   // update the mailboxlist
@@ -5860,7 +6743,7 @@
           div.className.match(/collapsed/)) {
         // add children's counters
         for (var k in this.env.unread_counts)
-          if (k.indexOf(mbox + this.env.delimiter) == 0)
+          if (k.startsWith(mbox + this.env.delimiter))
             childcount += this.env.unread_counts[k];
       }
 
@@ -5917,8 +6800,9 @@
 
     // fetch headers only once
     if (!this.gui_objects.all_headers_box.innerHTML) {
-      var lock = this.display_message(this.get_label('loading'), 'loading');
-      this.http_post('headers', {_uid: this.env.uid}, lock);
+      this.http_post('headers', {_uid: this.env.uid, _mbox: this.env.mailbox},
+        this.display_message(this.get_label('loading'), 'loading')
+      );
     }
   };
 
@@ -5933,6 +6817,244 @@
     elem.onclick = function() { rcmail.command('show-headers', '', elem); };
   };
 
+  // create folder selector popup, position and display it
+  this.folder_selector = function(event, callback)
+  {
+    var container = this.folder_selector_element;
+
+    if (!container) {
+      var rows = [],
+        delim = this.env.delimiter,
+        ul = $('<ul class="toolbarmenu">'),
+        link = document.createElement('a');
+
+      container = $('<div id="folder-selector" class="popupmenu"></div>');
+      link.href = '#';
+      link.className = 'icon';
+
+      // loop over sorted folders list
+      $.each(this.env.mailboxes_list, function() {
+        var n = 0, s = 0,
+          folder = ref.env.mailboxes[this],
+          id = folder.id,
+          a = $(link.cloneNode(false)),
+          row = $('<li>');
+
+        if (folder.virtual)
+          a.addClass('virtual').attr('aria-disabled', 'true').attr('tabindex', '-1');
+        else
+          a.addClass('active').data('id', folder.id);
+
+        if (folder['class'])
+          a.addClass(folder['class']);
+
+        // calculate/set indentation level
+        while ((s = id.indexOf(delim, s)) >= 0) {
+          n++; s++;
+        }
+        a.css('padding-left', n ? (n * 16) + 'px' : 0);
+
+        // add folder name element
+        a.append($('<span>').text(folder.name));
+
+        row.append(a);
+        rows.push(row);
+      });
+
+      ul.append(rows).appendTo(container);
+
+      // temporarily show element to calculate its size
+      container.css({left: '-1000px', top: '-1000px'})
+        .appendTo($('body')).show();
+
+      // set max-height if the list is long
+      if (rows.length > 10)
+        container.css('max-height', $('li', container)[0].offsetHeight * 10 + 9);
+
+      // register delegate event handler for folder item clicks
+      container.on('click', 'a.active', function(e){
+        container.data('callback')($(this).data('id'));
+        return false;
+      });
+/*
+      // hide selector on click out of selector element
+      var fn = function(e) { if (e.target != container.get(0)) container.hide(); };
+      $(document.body).on('mouseup', fn);
+      $('iframe').contents().on('mouseup', fn)
+        .load(function(e) { try { $(this).contents().on('mouseup', fn); } catch(e) {}; });
+*/
+      this.folder_selector_element = container;
+    }
+
+    container.data('callback', callback);
+
+    // position menu on the screen
+    this.show_menu('folder-selector', true, event);
+  };
+
+
+  /***********************************************/
+  /*********    popup menu functions     *********/
+  /***********************************************/
+
+  // Show/hide a specific popup menu
+  this.show_menu = function(prop, show, event)
+  {
+    var name = typeof prop == 'object' ? prop.menu : prop,
+      obj = $('#'+name),
+      ref = event && event.target ? $(event.target) : $(obj.attr('rel') || '#'+name+'link'),
+      keyboard = rcube_event.is_keyboard(event),
+      align = obj.attr('data-align') || '',
+      stack = false;
+
+    if (typeof prop == 'string')
+      prop = { menu:name };
+
+    // let plugins or skins provide the menu element
+    if (!obj.length) {
+      obj = this.triggerEvent('menu-get', { name:name, props:prop, originalEvent:event });
+    }
+
+    if (!obj || !obj.length) {
+      // just delegate the action to subscribers
+      return this.triggerEvent(show === false ? 'menu-close' : 'menu-open', { name:name, props:prop, originalEvent:event });
+    }
+
+    // move element to top for proper absolute positioning
+    obj.appendTo(document.body);
+
+    if (typeof show == 'undefined')
+      show = obj.is(':visible') ? false : true;
+
+    if (show && ref.length) {
+      var win = $(window),
+        pos = ref.offset(),
+        above = align.indexOf('bottom') >= 0;
+
+      stack = ref.attr('role') == 'menuitem' || ref.closest('[role=menuitem]').length > 0;
+
+      ref.offsetWidth = ref.outerWidth();
+      ref.offsetHeight = ref.outerHeight();
+      if (!above && pos.top + ref.offsetHeight + obj.height() > win.height()) {
+        above = true;
+      }
+      if (align.indexOf('right') >= 0) {
+        pos.left = pos.left + ref.outerWidth() - obj.width();
+      }
+      else if (stack) {
+        pos.left = pos.left + ref.offsetWidth - 5;
+        pos.top -= ref.offsetHeight;
+      }
+      if (pos.left + obj.width() > win.width()) {
+        pos.left = win.width() - obj.width() - 12;
+      }
+      pos.top = Math.max(0, pos.top + (above ? -obj.height() : ref.offsetHeight));
+      obj.css({ left:pos.left+'px', top:pos.top+'px' });
+    }
+
+    // add menu to stack
+    if (show) {
+      // truncate stack down to the one containing the ref link
+      for (var i = this.menu_stack.length - 1; stack && i >= 0; i--) {
+        if (!$(ref).parents('#'+this.menu_stack[i]).length)
+          this.hide_menu(this.menu_stack[i]);
+      }
+      if (stack && this.menu_stack.length) {
+        obj.data('parent', this.menu_stack.last());
+        obj.css('z-index', ($('#'+this.menu_stack.last()).css('z-index') || 0) + 1);
+      }
+      else if (!stack && this.menu_stack.length) {
+        this.hide_menu(this.menu_stack[0], event);
+      }
+
+      obj.show().attr('aria-hidden', 'false').data('opener', ref.attr('aria-expanded', 'true').get(0));
+      this.triggerEvent('menu-open', { name:name, obj:obj, props:prop, originalEvent:event });
+      this.menu_stack.push(name);
+
+      this.menu_keyboard_active = show && keyboard;
+      if (this.menu_keyboard_active) {
+        this.focused_menu = name;
+        obj.find('a,input:not(:disabled)').not('[aria-disabled=true]').first().focus();
+      }
+    }
+    else {  // close menu
+      this.hide_menu(name, event);
+    }
+
+    return show;
+  };
+
+  // hide the given popup menu (and it's childs)
+  this.hide_menu = function(name, event)
+  {
+    if (!this.menu_stack.length) {
+      // delegate to subscribers
+      this.triggerEvent('menu-close', { name:name, props:{ menu:name }, originalEvent:event });
+      return;
+    }
+
+    var obj, keyboard = rcube_event.is_keyboard(event);
+    for (var j=this.menu_stack.length-1; j >= 0; j--) {
+      obj = $('#' + this.menu_stack[j]).hide().attr('aria-hidden', 'true').data('parent', false);
+      this.triggerEvent('menu-close', { name:this.menu_stack[j], obj:obj, props:{ menu:this.menu_stack[j] }, originalEvent:event });
+      if (this.menu_stack[j] == name) {
+        j = -1;  // stop loop
+        if (obj.data('opener')) {
+          $(obj.data('opener')).attr('aria-expanded', 'false');
+          if (keyboard)
+            obj.data('opener').focus();
+        }
+      }
+      this.menu_stack.pop();
+    }
+
+    // focus previous menu in stack
+    if (this.menu_stack.length && keyboard) {
+      this.menu_keyboard_active = true;
+      this.focused_menu = this.menu_stack.last();
+      if (!obj || !obj.data('opener'))
+        $('#'+this.focused_menu).find('a,input:not(:disabled)').not('[aria-disabled=true]').first().focus();
+    }
+    else {
+      this.focused_menu = null;
+      this.menu_keyboard_active = false;
+    }
+  }
+
+
+  // position a menu element on the screen in relation to other object
+  this.element_position = function(element, obj)
+  {
+    var obj = $(obj), win = $(window),
+      width = obj.outerWidth(),
+      height = obj.outerHeight(),
+      menu_pos = obj.data('menu-pos'),
+      win_height = win.height(),
+      elem_height = $(element).height(),
+      elem_width = $(element).width(),
+      pos = obj.offset(),
+      top = pos.top,
+      left = pos.left + width;
+
+    if (menu_pos == 'bottom') {
+      top += height;
+      left -= width;
+    }
+    else
+      left -= 5;
+
+    if (top + elem_height > win_height) {
+      top -= elem_height - height;
+      if (top < 0)
+        top = Math.max(0, (win_height - elem_height) / 2);
+    }
+
+    if (left + elem_width > win.width())
+      left -= elem_width + width;
+
+    element.css({left: left + 'px', top: top + 'px'});
+  };
+
 
   /********************************************************/
   /*********  html to text conversion functions   *********/
@@ -5940,15 +7062,14 @@
 
   this.html2plain = function(htmlText, id)
   {
-    var rcmail = this,
-      url = '?_task=utils&_action=html2text',
+    var url = '?_task=utils&_action=html2text',
       lock = this.set_busy(true, 'converting');
 
     this.log('HTTP POST: ' + url);
 
     $.ajax({ type: 'POST', url: url, data: htmlText, contentType: 'application/octet-stream',
-      error: function(o, status, err) { rcmail.http_error(o, status, err, lock); },
-      success: function(data) { rcmail.set_busy(false, null, lock); $('#'+id).val(data); rcmail.log(data); }
+      error: function(o, status, err) { ref.http_error(o, status, err, lock); },
+      success: function(data) { ref.set_busy(false, null, lock); $('#'+id).val(data); ref.log(data); }
     });
   };
 
@@ -5979,13 +7100,13 @@
 
     if (action)
       query._action = action;
-    else
+    else if (this.env.action)
       query._action = this.env.action;
 
     var base = this.env.comm_path, k, param = {};
 
     // overwrite task name
-    if (query._action.match(/([a-z0-9_-]+)\/([a-z0-9-_.]+)/)) {
+    if (action && action.match(/([a-z0-9_-]+)\/([a-z0-9-_.]+)/)) {
       query._action = RegExp.$2;
       base = base.replace(/\_task=[a-z0-9_-]+/, '_task='+RegExp.$1);
     }
@@ -5996,7 +7117,7 @@
         param[k] = query[k];
     }
 
-    return base + '&' + $.param(param) + querystring;
+    return base + (base.indexOf('?') > -1 ? '&' : '?') + $.param(param) + querystring;
   };
 
   this.redirect = function(url, lock)
@@ -6020,7 +7141,7 @@
 
   this.goto_url = function(action, query, lock)
   {
-    this.redirect(this.url(action, query));
+    this.redirect(this.url(action, query), lock);
   };
 
   this.location_href = function(url, target, frame)
@@ -6041,6 +7162,13 @@
     this.start_keepalive();
   };
 
+  // update browser location to remember current view
+  this.update_state = function(query)
+  {
+    if (window.history.replaceState)
+      window.history.replaceState({}, document.title, rcmail.url('', query));
+  };
+
   // send a http request to the server
   this.http_request = function(action, query, lock)
   {
@@ -6054,7 +7182,7 @@
       if (result === false)
         return false;
       else
-        query = result;
+        url = this.url(action, result);
     }
 
     url += '&_remote=1';
@@ -6173,7 +7301,7 @@
           this.enable_command('export-selected', false);
         }
 
-      case 'moveto':
+      case 'move':
         if (this.env.action == 'show') {
           // re-enable commands on move/delete error
           this.enable_command(this.env.message_commands, true);
@@ -6202,17 +7330,31 @@
 
       case 'refresh':
       case 'check-recent':
+        // update message flags
+        $.each(this.env.recent_flags || {}, function(uid, flags) {
+          ref.set_message(uid, 'deleted', flags.deleted);
+          ref.set_message(uid, 'replied', flags.answered);
+          ref.set_message(uid, 'unread', !flags.seen);
+          ref.set_message(uid, 'forwarded', flags.forwarded);
+          ref.set_message(uid, 'flagged', flags.flagged);
+        });
+        delete this.env.recent_flags;
+
       case 'getunread':
       case 'search':
         this.env.qsearch = null;
       case 'list':
         if (this.task == 'mail') {
+          var is_multifolder = this.is_multifolder_listing();
           this.enable_command('show', 'select-all', 'select-none', this.env.messagecount > 0);
-          this.enable_command('expunge', this.env.exists);
-          this.enable_command('purge', this.purge_mailbox_test());
-          this.enable_command('expand-all', 'expand-unread', 'collapse-all', this.env.threading && this.env.messagecount);
+          this.enable_command('expunge', this.env.exists && !is_multifolder);
+          this.enable_command('purge', this.purge_mailbox_test() && !is_multifolder);
+          this.enable_command('import-messages', !is_multifolder);
+          this.enable_command('expand-all', 'expand-unread', 'collapse-all', this.env.threading && this.env.messagecount && !is_multifolder);
+          this.enable_command('set-listmode', this.env.threads && !is_multifolder);
 
           if ((response.action == 'list' || response.action == 'search') && this.message_list) {
+            this.message_list.focus();
             this.msglist_select(this.message_list);
             this.triggerEvent('listupdate', { folder:this.env.mailbox, rowcount:this.message_list.rowcount });
           }
@@ -6224,6 +7366,7 @@
             this.enable_command('search-create', this.env.source == '');
             this.enable_command('search-delete', this.env.search_id);
             this.update_group_commands();
+            this.contact_list.focus();
             this.triggerEvent('listupdate', { folder:this.env.source, rowcount:this.contact_list.rowcount });
           }
         }
@@ -6257,7 +7400,7 @@
     else if (status == 'timeout')
       this.display_message(this.get_label('requesttimedout'), 'error');
     else if (request.status == 0 && status != 'abort')
-      this.display_message(this.get_label('servererror') + ' (No connection)', 'error');
+      this.display_message(this.get_label('connerror'), 'error');
 
     // redirect to url specified in location header if not empty
     var location_url = request.getResponseHeader("Location");
@@ -6277,6 +7420,20 @@
       setTimeout(function(){ ref.keep_alive(); ref.start_keepalive(); }, 30000);
   };
 
+  // handler for session errors detected on the server
+  this.session_error = function(redirect_url)
+  {
+    this.env.server_error = 401;
+
+    // save message in local storage and do not redirect
+    if (this.env.action == 'compose') {
+      this.save_compose_form_local();
+    }
+    else if (redirect_url) {
+      window.setTimeout(function(){ ref.redirect(redirect_url, true); }, 2000);
+    }
+  };
+
   // callback when an iframe finished loading
   this.iframe_loaded = function(unlock)
   {
@@ -6286,10 +7443,134 @@
       clearTimeout(this.submit_timer);
   };
 
+  /**
+   Send multi-threaded parallel HTTP requests to the server for a list if items.
+   The string '%' in either a GET query or POST parameters will be replaced with the respective item value.
+   This is the argument object expected: {
+       items: ['foo','bar','gna'],      // list of items to send requests for
+       action: 'task/some-action',      // Roudncube action to call
+       query: { q:'%s' },               // GET query parameters
+       postdata: { source:'%s' },       // POST data (sends a POST request if present)
+       threads: 3,                      // max. number of concurrent requests
+       onresponse: function(data){ },   // Callback function called for every response received from server
+       whendone: function(alldata){ }   // Callback function called when all requests have been sent
+   }
+  */
+  this.multi_thread_http_request = function(prop)
+  {
+    var i, item, reqid = new Date().getTime(),
+      threads = prop.threads || 1;
+
+    prop.reqid = reqid;
+    prop.running = 0;
+    prop.requests = [];
+    prop.result = [];
+    prop._items = $.extend([], prop.items);  // copy items
+
+    if (!prop.lock)
+      prop.lock = this.display_message(this.get_label('loading'), 'loading');
+
+    // add the request arguments to the jobs pool
+    this.http_request_jobs[reqid] = prop;
+
+    // start n threads
+    for (i=0; i < threads; i++) {
+      item = prop._items.shift();
+      if (item === undefined)
+        break;
+
+      prop.running++;
+      prop.requests.push(this.multi_thread_send_request(prop, item));
+    }
+
+    return reqid;
+  };
+
+  // helper method to send an HTTP request with the given iterator value
+  this.multi_thread_send_request = function(prop, item)
+  {
+    var postdata, query;
+
+    // replace %s in post data
+    if (prop.postdata) {
+      postdata = {};
+      for (var k in prop.postdata) {
+        postdata[k] = String(prop.postdata[k]).replace('%s', item);
+      }
+      postdata._reqid = prop.reqid;
+    }
+    // replace %s in query
+    else if (typeof prop.query == 'string') {
+      query = prop.query.replace('%s', item);
+      query += '&_reqid=' + prop.reqid;
+    }
+    else if (typeof prop.query == 'object' && prop.query) {
+      query = {};
+      for (var k in prop.query) {
+        query[k] = String(prop.query[k]).replace('%s', item);
+      }
+      query._reqid = prop.reqid;
+    }
+
+    // send HTTP GET or POST request
+    return postdata ? this.http_post(prop.action, postdata) : this.http_request(prop.action, query);
+  };
+
+  // callback function for multi-threaded http responses
+  this.multi_thread_http_response = function(data, reqid)
+  {
+    var prop = this.http_request_jobs[reqid];
+    if (!prop || prop.running <= 0 || prop.cancelled)
+      return;
+
+    prop.running--;
+
+    // trigger response callback
+    if (prop.onresponse && typeof prop.onresponse == 'function') {
+      prop.onresponse(data);
+    }
+
+    prop.result = $.extend(prop.result, data);
+
+    // send next request if prop.items is not yet empty
+    var item = prop._items.shift();
+    if (item !== undefined) {
+      prop.running++;
+      prop.requests.push(this.multi_thread_send_request(prop, item));
+    }
+    // trigger whendone callback and mark this request as done
+    else if (prop.running == 0) {
+      if (prop.whendone && typeof prop.whendone == 'function') {
+        prop.whendone(prop.result);
+      }
+
+      this.set_busy(false, '', prop.lock);
+
+      // remove from this.http_request_jobs pool
+      delete this.http_request_jobs[reqid];
+    }
+  };
+
+  // abort a running multi-thread request with the given identifier
+  this.multi_thread_request_abort = function(reqid)
+  {
+    var prop = this.http_request_jobs[reqid];
+    if (prop) {
+      for (var i=0; prop.running > 0 && i < prop.requests.length; i++) {
+        if (prop.requests[i].abort)
+          prop.requests[i].abort();
+      }
+
+      prop.running = 0;
+      prop.cancelled = true;
+      this.set_busy(false, '', prop.lock);
+    }
+  };
+
   // post the given form to a hidden iframe
   this.async_upload_form = function(form, action, onload)
   {
-    var ts = new Date().getTime(),
+    var frame, ts = new Date().getTime(),
       frame_name = 'rcmupload'+ts;
 
     // upload progress support
@@ -6308,21 +7589,19 @@
     // have to do it this way for IE
     // otherwise the form will be posted to a new window
     if (document.all) {
-      var html = '<iframe name="'+frame_name+'" src="program/resources/blank.gif" style="width:0;height:0;visibility:hidden;"></iframe>';
-      document.body.insertAdjacentHTML('BeforeEnd', html);
+      document.body.insertAdjacentHTML('BeforeEnd', '<iframe name="'+frame_name+'"'
+        + ' src="program/resources/blank.gif" style="width:0;height:0;visibility:hidden;"></iframe>');
+      frame = $('iframe[name="'+frame_name+'"]');
     }
-    else { // for standards-compilant browsers
-      var frame = document.createElement('iframe');
-      frame.name = frame_name;
-      frame.style.border = 'none';
-      frame.style.width = 0;
-      frame.style.height = 0;
-      frame.style.visibility = 'hidden';
-      document.body.appendChild(frame);
+    // for standards-compliant browsers
+    else {
+      frame = $('<iframe>').attr('name', frame_name)
+        .css({border: 'none', width: 0, height: 0, visibility: 'hidden'})
+        .appendTo(document.body);
     }
 
     // handle upload errors, parsing iframe content in onload
-    $(frame_name).bind('load', {ts:ts}, onload);
+    frame.bind('load', {ts:ts}, onload);
 
     $(form).attr({
         target: frame_name,
@@ -6385,9 +7664,10 @@
         url: ref.url(ref.env.filedrop.action||'upload', { _id:ref.env.compose_id||ref.env.cid||'', _uploadid:ts, _remote:1 }),
         contentType: formdata ? false : 'multipart/form-data; boundary=' + boundary,
         processData: false,
+        timeout: 0, // disable default timeout set in ajaxSetup()
         data: formdata || multipart,
         headers: {'X-Roundcube-Request': ref.env.request_token},
-        beforeSend: function(xhr, s) { if (!formdata && xhr.sendAsBinary) xhr.send = xhr.sendAsBinary; },
+        xhr: function() { var xhr = jQuery.ajaxSettings.xhr(); if (!formdata && xhr.sendAsBinary) xhr.send = xhr.sendAsBinary; return xhr; },
         success: function(data){ ref.http_response(data); },
         error: function(o, status, err) { ref.http_error(o, status, err, null, 'attachment'); }
       });
@@ -6427,7 +7707,7 @@
             multipart += '; filename="' + (f.name_bin || file.name) + '"' + crlf;
             multipart += 'Content-Length: ' + file.size + crlf;
             multipart += 'Content-Type: ' + file.type + crlf + crlf;
-            multipart += e.target.result + crlf;
+            multipart += reader.result + crlf;
             multipart += dashdash + boundary + crlf;
 
             if (j == last)  // we're done, submit the data
@@ -6498,8 +7778,11 @@
     if (this.task == 'mail' && this.gui_objects.mailboxlist)
       params = this.check_recent_params();
 
+    params._last = Math.floor(this.env.lastrefresh.getTime() / 1000);
+    this.env.lastrefresh = new Date();
+
     // plugins should bind to 'requestrefresh' event to add own params
-    this.http_request('refresh', params, lock);
+    this.http_post('refresh', params, lock);
   };
 
   // returns check-recent request parameters
@@ -6509,12 +7792,17 @@
 
     if (this.gui_objects.mailboxlist)
       params._folderlist = 1;
-    if (this.gui_objects.messagelist)
-      params._list = 1;
     if (this.gui_objects.quotadisplay)
       params._quota = 1;
     if (this.env.search_request)
       params._search = this.env.search_request;
+
+    if (this.gui_objects.messagelist) {
+      params._list = 1;
+
+      // message uids for flag updates check
+      params._uids = $.map(this.message_list.rows, function(row, uid) { return uid; }).join(',');
+    }
 
     return params;
   };
@@ -6523,6 +7811,14 @@
   /********************************************************/
   /*********            helper methods            *********/
   /********************************************************/
+
+  /**
+   * Quote html entities
+   */
+  this.quote_html = function(str)
+  {
+    return String(str).replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
+  };
 
   // get window.opener.rcmail if available
   this.opener = function()
@@ -6547,6 +7843,13 @@
   {
     return this.env.cid ? this.env.cid : (this.contact_list ? this.contact_list.get_single_selection() : null);
   };
+
+  // get the IMP mailbox of the message with the given UID
+  this.get_message_mailbox = function(uid)
+  {
+    var msg = this.env.messages ? this.env.messages[uid] : {};
+    return msg.mbox || this.env.mailbox;
+  }
 
   // gets cursor position
   this.get_caret_pos = function(obj)
@@ -6588,6 +7891,57 @@
     }
   };
 
+  // get selected text from an input field
+  // http://stackoverflow.com/questions/7186586/how-to-get-the-selected-text-in-textarea-using-jquery-in-internet-explorer-7
+  this.get_input_selection = function(obj)
+  {
+    var start = 0, end = 0,
+      normalizedValue, range,
+      textInputRange, len, endRange;
+
+    if (typeof obj.selectionStart == "number" && typeof obj.selectionEnd == "number") {
+      normalizedValue = obj.value;
+      start = obj.selectionStart;
+      end = obj.selectionEnd;
+    }
+    else {
+      range = document.selection.createRange();
+
+      if (range && range.parentElement() == obj) {
+        len = obj.value.length;
+        normalizedValue = obj.value; //.replace(/\r\n/g, "\n");
+
+        // create a working TextRange that lives only in the input
+        textInputRange = obj.createTextRange();
+        textInputRange.moveToBookmark(range.getBookmark());
+
+        // Check if the start and end of the selection are at the very end
+        // of the input, since moveStart/moveEnd doesn't return what we want
+        // in those cases
+        endRange = obj.createTextRange();
+        endRange.collapse(false);
+
+        if (textInputRange.compareEndPoints("StartToEnd", endRange) > -1) {
+          start = end = len;
+        }
+        else {
+          start = -textInputRange.moveStart("character", -len);
+          start += normalizedValue.slice(0, start).split("\n").length - 1;
+
+          if (textInputRange.compareEndPoints("EndToEnd", endRange) > -1) {
+            end = len;
+          }
+          else {
+            end = -textInputRange.moveEnd("character", -len);
+            end += normalizedValue.slice(0, end).split("\n").length - 1;
+          }
+        }
+      }
+    }
+
+    return { start:start, end:end, text:normalizedValue.substr(start, end-start) };
+  };
+
   // disable/enable all fields of a form
   this.lock_form = function(form, lock)
   {
@@ -6624,20 +7978,28 @@
     try {
       window.navigator.registerProtocolHandler('mailto', this.mailto_handler_uri(), name);
     }
-    catch(e) {};
+    catch(e) {
+      this.display_message(String(e), 'error');
+    };
   };
 
   this.check_protocol_handler = function(name, elem)
   {
     var nav = window.navigator;
-    if (!nav
-      || (typeof nav.registerProtocolHandler != 'function')
-      || ((typeof nav.isProtocolHandlerRegistered == 'function')
-        && nav.isProtocolHandlerRegistered('mailto', this.mailto_handler_uri()) == 'registered')
-    )
-      $(elem).addClass('disabled');
-    else
-      $(elem).click(function() { rcmail.register_protocol_handler(name); return false; });
+    if (!nav || (typeof nav.registerProtocolHandler != 'function')) {
+      $(elem).addClass('disabled').click(function(){ return false; });
+    }
+    else {
+      var status = null;
+      if (typeof nav.isProtocolHandlerRegistered == 'function') {
+        status = nav.isProtocolHandlerRegistered('mailto', this.mailto_handler_uri());
+        if (status)
+          $(elem).parent().find('.mailtoprotohandler-status').html(status);
+      }
+      else {
+        $(elem).click(function() { rcmail.register_protocol_handler(name); return false; });
+      }
+    }
   };
 
   // Checks browser capabilities eg. PDF support, TIF support
@@ -6712,15 +8074,6 @@
         return 1;
     }
 
-    // this will detect any pdf plugin including PDF.js in Firefox
-    var obj = document.createElement('OBJECT');
-    obj.onload = function() { rcmail.env.browser_capabilities.pdf = 1; };
-    obj.onerror = function() { rcmail.env.browser_capabilities.pdf = 0; };
-    obj.style.display = 'none';
-    obj.type = 'application/pdf';
-    obj.data = 'program/resources/blank.pdf';
-    document.body.appendChild(obj);
-
     return 0;
   };
 
@@ -6746,7 +8099,36 @@
   this.set_cookie = function(name, value, expires)
   {
     setCookie(name, value, expires, this.env.cookie_path, this.env.cookie_domain, this.env.cookie_secure);
-  }
+  };
+
+  this.get_local_storage_prefix = function()
+  {
+    if (!this.local_storage_prefix)
+      this.local_storage_prefix = 'roundcube.' + (this.env.user_id || 'anonymous') + '.';
+
+    return this.local_storage_prefix;
+  };
+
+  // wrapper for localStorage.getItem(key)
+  this.local_storage_get_item = function(key, deflt, encrypted)
+  {
+    // TODO: add encryption
+    var item = localStorage.getItem(this.get_local_storage_prefix() + key);
+    return item !== null ? JSON.parse(item) : (deflt || null);
+  };
+
+  // wrapper for localStorage.setItem(key, data)
+  this.local_storage_set_item = function(key, data, encrypted)
+  {
+    // TODO: add encryption
+    return localStorage.setItem(this.get_local_storage_prefix() + key, JSON.stringify(data));
+  };
+
+  // wrapper for localStorage.removeItem(key)
+  this.local_storage_remove_item = function(key)
+  {
+    return localStorage.removeItem(this.get_local_storage_prefix() + key);
+  };
 
 }  // end object rcube_webmail
 
@@ -6756,12 +8138,12 @@
 {
   if (!elem.title) {
     var $elem = $(elem);
-    if ($elem.width() + indent * 15 > $elem.parent().width())
-      elem.title = $elem.html();
+    if ($elem.width() + (indent || 0) * 15 > $elem.parent().width())
+      elem.title = $elem.text();
   }
 };
 
-rcube_webmail.long_subject_title_ie = function(elem, indent)
+rcube_webmail.long_subject_title_ex = function(elem)
 {
   if (!elem.title) {
     var $elem = $(elem),
@@ -6773,7 +8155,7 @@
       w = tmp.width();
 
     tmp.remove();
-    if (w + indent * 15 > $elem.width())
+    if (w + $('span.branch', $elem).width() * 15 > $elem.width())
       elem.title = txt;
   }
 };

--
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