--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/program/js/list.js	Thu Jan 04 15:52:31 2018 -0500
@@ -0,0 +1,1857 @@
+/**
+ * Roundcube List Widget
+ *
+ * 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
+ *
+ * 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 Charles McNulty <charles@charlesmcnulty.com>
+ *
+ * @requires jquery.js, common.js
+ */
+
+
+/**
+ * Roundcube List Widget class
+ * @constructor
+ */
+function rcube_list_widget(list, p)
+{
+  // static contants
+  this.ENTER_KEY = 13;
+  this.DELETE_KEY = 46;
+  this.BACKSPACE_KEY = 8;
+
+  this.list = list ? list : null;
+  this.tagname = this.list ? this.list.nodeName.toLowerCase() : 'table';
+  this.id_regexp = /^rcmrow([a-z0-9\-_=\+\/]+)/i;
+  this.rows = {};
+  this.selection = [];
+  this.rowcount = 0;
+  this.colcount = 0;
+
+  this.subject_col = 0;
+  this.modkey = 0;
+  this.multiselect = false;
+  this.multiexpand = false;
+  this.multi_selecting = false;
+  this.draggable = false;
+  this.column_movable = false;
+  this.keyboard = false;
+  this.toggleselect = false;
+  this.aria_listbox = false;
+  this.parent_focus = true;
+
+  this.drag_active = false;
+  this.col_drag_active = false;
+  this.column_fixed = null;
+  this.last_selected = null;
+  this.shift_start = null;
+  this.focused = false;
+  this.drag_mouse_start = null;
+  this.dblclick_time = 500; // default value on MS Windows is 500
+  this.row_init = function(){};  // @deprecated; use list.addEventListener('initrow') instead
+
+  this.pointer_touch_start = 0; // start time of the touch event
+  this.pointer_touch_time = 500; // maximum time a touch should be considered a left mouse button event, after this its something else (eg contextmenu event)
+
+  // overwrite default paramaters
+  if (p && typeof p === 'object')
+    for (var n in p)
+      this[n] = p[n];
+
+  // register this instance
+  rcube_list_widget._instances.push(this);
+};
+
+
+rcube_list_widget.prototype = {
+
+
+/**
+ * get all message rows from HTML table and init each row
+ */
+init: function()
+{
+  if (this.tagname == 'table' && this.list && this.list.tBodies[0]) {
+    this.thead = this.list.tHead;
+    this.tbody = this.list.tBodies[0];
+  }
+  else if (this.tagname != 'table' && this.list) {
+    this.tbody = this.list;
+  }
+
+  if ($(this.list).attr('role') == 'listbox') {
+    this.aria_listbox = true;
+    if (this.multiselect)
+      $(this.list).attr('aria-multiselectable', 'true');
+  }
+
+  var me = this;
+
+  if (this.tbody) {
+    this.rows = {};
+    this.rowcount = 0;
+
+    var r, len, rows = this.tbody.childNodes;
+
+    for (r=0, len=rows.length; r<len; r++) {
+      if (rows[r].nodeType == 1)
+        this.rowcount += this.init_row(rows[r]) ? 1 : 0;
+    }
+
+    this.init_header();
+    this.frame = this.list.parentNode;
+
+    // set body events
+    if (this.keyboard) {
+      rcube_event.add_listener({event:'keydown', object:this, method:'key_press'});
+
+      // allow the table element to receive focus.
+      $(this.list).attr('tabindex', '0')
+        .on('focus', function(e) { me.focus(e); });
+    }
+  }
+
+  if (this.parent_focus) {
+    this.list.parentNode.onclick = function(e) { me.focus(); };
+  }
+
+  return this;
+},
+
+
+/**
+ * Init list row and set mouse events on it
+ */
+init_row: function(row)
+{
+  row.uid = this.get_row_uid(row);
+
+  // make references in internal array and set event handlers
+  if (row && row.uid) {
+    var self = this, uid = row.uid;
+    this.rows[uid] = {uid:uid, id:row.id, obj:row};
+
+    $(row).data('uid', uid)
+      // set eventhandlers to table row (only left-button-clicks in mouseup)
+      .mousedown(function(e) { return self.drag_row(e, this.uid); })
+      .mouseup(function(e) {
+        if (e.which == 1 && !self.drag_active)
+          return self.click_row(e, this.uid);
+        else
+          return true;
+      });
+
+    // for IE and Edge differentiate between touch, touch+hold using pointer events rather than touch
+    if ((bw.ie || bw.edge) && bw.pointer) {
+      $(row).on('pointerdown', function(e) {
+          if (e.pointerType == 'touch') {
+            self.pointer_touch_start = new Date().getTime();
+            return false;
+          }
+        })
+        .on('pointerup', function(e) {
+          if (e.pointerType == 'touch') {
+            var duration = (new Date().getTime() - self.pointer_touch_start);
+            if (duration <= self.pointer_touch_time) {
+              self.drag_row(e, this.uid);
+              return self.click_row(e, this.uid);
+            }
+          }
+        });
+    }
+    else if (bw.touch && row.addEventListener) {
+      row.addEventListener('touchstart', function(e) {
+        if (e.touches.length == 1) {
+          self.touchmoved = false;
+          self.drag_row(rcube_event.touchevent(e.touches[0]), this.uid)
+        }
+      }, false);
+      row.addEventListener('touchend', function(e) {
+        if (e.changedTouches.length == 1) {
+          if (!self.touchmoved && !self.click_row(rcube_event.touchevent(e.changedTouches[0]), this.uid))
+            e.preventDefault();
+        }
+      }, false);
+      row.addEventListener('touchmove', function(e) {
+        if (e.changedTouches.length == 1) {
+          self.touchmoved = true;
+          if (self.drag_active)
+            e.preventDefault();
+        }
+      }, false);
+    }
+
+    // label the list row with the subject col as descriptive label
+    if (this.aria_listbox) {
+      var lbl_id = 'l:' + row.id;
+      $(row)
+        .attr('role', 'option')
+        .attr('aria-labelledby', lbl_id)
+        .find(this.col_tagname()).eq(this.subject_col).attr('id', lbl_id);
+    }
+
+    if (document.all)
+      row.onselectstart = function() { return false; };
+
+    this.row_init(this.rows[uid]);  // legacy support
+    this.triggerEvent('initrow', this.rows[uid]);
+
+    return true;
+  }
+},
+
+
+/**
+ * Init list column headers and set mouse events on them
+ */
+init_header: function()
+{
+  if (this.thead) {
+    this.colcount = 0;
+
+    if (this.fixed_header) {  // copy (modified) fixed header back to the actual table
+      $(this.list.tHead).replaceWith($(this.fixed_header).find('thead').clone());
+      $(this.list.tHead).find('th,td').attr('style', '').find('a').attr('tabindex', '-1');  // remove fixed widths
+    }
+    else if (!bw.touch && this.list.className.indexOf('fixedheader') >= 0) {
+      this.init_fixed_header();
+    }
+
+    var col, r, p = this;
+    // add events for list columns moving
+    if (this.column_movable && this.thead && this.thead.rows) {
+      for (r=0; r<this.thead.rows[0].cells.length; r++) {
+        if (this.column_fixed == r)
+          continue;
+        col = this.thead.rows[0].cells[r];
+        col.onmousedown = function(e) { return p.drag_column(e, this); };
+        this.colcount++;
+      }
+    }
+  }
+},
+
+init_fixed_header: function()
+{
+  var clone = $(this.list.tHead).clone();
+
+  if (!this.fixed_header) {
+    this.fixed_header = $('<table>')
+      .attr('class', this.list.className + ' fixedcopy')
+      .attr('role', 'presentation')
+      .css({ position:'fixed' })
+      .append(clone)
+      .append('<tbody></tbody>');
+    $(this.list).before(this.fixed_header);
+
+    var me = this;
+    $(window).resize(function() { me.resize(); });
+    $(window).scroll(function() {
+      var w = $(window);
+      me.fixed_header.css({
+        marginLeft: -w.scrollLeft() + 'px',
+        marginTop: -w.scrollTop() + 'px'
+      });
+    });
+  }
+  else {
+    $(this.fixed_header).find('thead').replaceWith(clone);
+  }
+
+  // avoid scrolling header links being focused
+  $(this.list.tHead).find('a.sortcol').attr('tabindex', '-1');
+
+  // set tabindex to fixed header sort links
+  clone.find('a.sortcol').attr('tabindex', '0');
+
+  this.thead = clone.get(0);
+  this.resize();
+},
+
+resize: function()
+{
+    if (!this.fixed_header)
+      return;
+
+    var column_widths = [];
+
+    // get column widths from original thead
+    $(this.tbody).parent().find('thead th,thead td').each(function(index) {
+      column_widths[index] = $(this).width();
+    });
+
+    // apply fixed widths to fixed table header
+    $(this.thead).parent().width($(this.tbody).parent().width());
+    $(this.thead).find('th,td').each(function(index) {
+      $(this).width(column_widths[index]);
+    });
+
+    $(window).scroll();
+},
+
+/**
+ * Remove all list rows
+ */
+clear: function(sel)
+{
+  if (this.tagname == 'table') {
+    var tbody = document.createElement('tbody');
+    this.list.insertBefore(tbody, this.tbody);
+    this.list.removeChild(this.list.tBodies[1]);
+    this.tbody = tbody;
+  }
+  else {
+    $(this.row_tagname() + ':not(.thead)', this.tbody).remove();
+  }
+
+  this.rows = {};
+  this.rowcount = 0;
+  this.last_selected = null;
+
+  if (sel)
+    this.clear_selection();
+
+  // reset scroll position (in Opera)
+  if (this.frame)
+    this.frame.scrollTop = 0;
+
+  // fix list header after removing any rows
+  this.resize();
+},
+
+
+/**
+ * 'remove' message row from list (just hide it)
+ */
+remove_row: function(uid, sel_next)
+{
+  var self = this, node = this.rows[uid] ? this.rows[uid].obj : null;
+
+  if (!node)
+    return;
+
+  node.style.display = 'none';
+
+  if (sel_next)
+    this.select_next();
+
+  delete this.rows[uid];
+  this.rowcount--;
+
+  // fix list header after removing any rows
+  clearTimeout(this.resize_timeout)
+  this.resize_timeout = setTimeout(function() { self.resize(); }, 50);
+},
+
+
+/**
+ * Add row to the list and initialize it
+ */
+insert_row: function(row, before)
+{
+  var self = this, tbody = this.tbody;
+
+  // create a real dom node first
+  if (row.nodeName === undefined) {
+    // for performance reasons use DOM instead of jQuery here
+    var i, e, domcell, col,
+      domrow = document.createElement(this.row_tagname());
+
+    if (row.id) domrow.id = row.id;
+    if (row.uid) domrow.uid = row.uid;
+    if (row.className) domrow.className = row.className;
+    if (row.style) $.extend(domrow.style, row.style);
+
+    for (i=0; row.cols && i < row.cols.length; i++) {
+      col = row.cols[i];
+      domcell = col.dom;
+      if (!domcell) {
+        domcell = document.createElement(this.col_tagname());
+        if (col.className) domcell.className = col.className;
+        if (col.innerHTML) domcell.innerHTML = col.innerHTML;
+        for (e in col.events)
+          domcell['on' + e] = col.events[e];
+      }
+      domrow.appendChild(domcell);
+    }
+
+    row = domrow;
+  }
+
+  if (before && tbody.childNodes.length)
+    tbody.insertBefore(row, (typeof before == 'object' && before.parentNode == tbody) ? before : tbody.firstChild);
+  else
+    tbody.appendChild(row);
+
+  this.init_row(row);
+  this.rowcount++;
+
+  // fix list header after adding any rows
+  clearTimeout(this.resize_timeout)
+  this.resize_timeout = setTimeout(function() { self.resize(); }, 50);
+},
+
+/**
+ * 
+ */
+update_row: function(id, cols, newid, select)
+{
+  var row = this.rows[id];
+  if (!row) return false;
+
+  var i, domrow = row.obj;
+  for (i = 0; cols && i < cols.length; i++) {
+    this.get_cell(domrow, i).html(cols[i]);
+  }
+
+  if (newid) {
+    delete this.rows[id];
+    domrow.uid = newid;
+    domrow.id = 'rcmrow' + newid;
+    this.init_row(domrow);
+
+    if (select)
+      this.selection[0] = newid;
+
+    if (this.last_selected == id)
+      this.last_selected = newid;
+  }
+},
+
+
+/**
+ * Set focus to the list
+ */
+focus: function(e)
+{
+  if (this.focused)
+    return;
+
+  this.focused = true;
+
+  if (e)
+    rcube_event.cancel(e);
+
+  var focus_elem = null;
+
+  if (this.last_selected && this.rows[this.last_selected]) {
+    focus_elem = $(this.rows[this.last_selected].obj).find(this.col_tagname()).eq(this.subject_col).attr('tabindex', '0');
+  }
+
+  // Un-focus already focused elements (#1487123, #1487316, #1488600, #1488620)
+  if (focus_elem && focus_elem.length) {
+    // We now fix this by explicitly assigning focus to a dedicated link element
+    this.focus_noscroll(focus_elem);
+  }
+  else {
+    // It looks that window.focus() does the job for all browsers, but not Firefox (#1489058)
+    $('iframe,:focus:not(body)').blur();
+    window.focus();
+  }
+
+  $(this.list).addClass('focus').removeAttr('tabindex');
+
+  // set internal focus pointer to first row
+  if (!this.last_selected)
+    this.select_first(CONTROL_KEY);
+},
+
+
+/**
+ * remove focus from the list
+ */
+blur: function(e)
+{
+  this.focused = false;
+
+  // avoid the table getting focus right again (on Shift+Tab)
+  var me = this;
+  setTimeout(function() { $(me.list).attr('tabindex', '0'); }, 20);
+
+  if (this.last_selected && this.rows[this.last_selected]) {
+    $(this.rows[this.last_selected].obj)
+      .find(this.col_tagname()).eq(this.subject_col).removeAttr('tabindex');
+  }
+
+  $(this.list).removeClass('focus');
+},
+
+/**
+ * Focus the given element without scrolling the list container
+ */
+focus_noscroll: function(elem)
+{
+  var y = this.frame.scrollTop || this.frame.scrollY;
+  elem.focus();
+  this.frame.scrollTop = y;
+},
+
+
+/**
+ * Set/unset the given column as hidden
+ */
+hide_column: function(col, hide)
+{
+  var method = hide ? 'addClass' : 'removeClass';
+
+  if (this.fixed_header)
+    $(this.row_tagname()+' '+this.col_tagname()+'.'+col, this.fixed_header)[method]('hidden');
+
+  $(this.row_tagname()+' '+this.col_tagname()+'.'+col, this.list)[method]('hidden');
+},
+
+
+/**
+ * onmousedown-handler of message list column
+ */
+drag_column: function(e, col)
+{
+  if (this.colcount > 1) {
+    this.drag_start = true;
+    this.drag_mouse_start = rcube_event.get_mouse_pos(e);
+
+    rcube_event.add_listener({event:'mousemove', object:this, method:'column_drag_mouse_move'});
+    rcube_event.add_listener({event:'mouseup', object:this, method:'column_drag_mouse_up'});
+
+    // enable dragging over iframes
+    this.add_dragfix();
+
+    // find selected column number
+    for (var i=0; i<this.thead.rows[0].cells.length; i++) {
+      if (col == this.thead.rows[0].cells[i]) {
+        this.selected_column = i;
+        break;
+      }
+    }
+  }
+
+  return false;
+},
+
+
+/**
+ * onmousedown-handler of message list row
+ */
+drag_row: function(e, id)
+{
+  // don't do anything (another action processed before)
+  if (!this.is_event_target(e))
+    return true;
+
+  // accept right-clicks
+  if (rcube_event.get_button(e) == 2)
+    return true;
+
+  this.in_selection_before = e && e.istouch || this.in_selection(id) ? id : false;
+
+  // selects currently unselected row
+  if (!this.in_selection_before) {
+    var mod_key = rcube_event.get_modifier(e);
+    this.select_row(id, mod_key, true);
+  }
+
+  if (this.draggable && this.selection.length && this.in_selection(id)) {
+    this.drag_start = true;
+    this.drag_mouse_start = rcube_event.get_mouse_pos(e);
+
+    rcube_event.add_listener({event:'mousemove', object:this, method:'drag_mouse_move'});
+    rcube_event.add_listener({event:'mouseup', object:this, method:'drag_mouse_up'});
+    if (bw.touch) {
+      rcube_event.add_listener({event:'touchmove', object:this, method:'drag_mouse_move'});
+      rcube_event.add_listener({event:'touchend', object:this, method:'drag_mouse_up'});
+    }
+
+    // enable dragging over iframes
+    this.add_dragfix();
+  }
+
+  return false;
+},
+
+
+/**
+ * onmouseup-handler of message list row
+ */
+click_row: function(e, id)
+{
+  // sanity check
+  if (!id || !this.rows[id])
+    return false;
+
+  // don't do anything (another action processed before)
+  if (!this.is_event_target(e))
+    return true;
+
+  var now = new Date().getTime(),
+    dblclicked = now - this.rows[id].clicked < this.dblclick_time;
+
+  // unselects currently selected row
+  if (!this.drag_active && !dblclicked && this.in_selection_before == id)
+    this.select_row(id, rcube_event.get_modifier(e), true);
+
+  this.drag_start = false;
+  this.in_selection_before = false;
+
+  // row was double clicked
+  if (this.rowcount && dblclicked && this.in_selection(id)) {
+    this.triggerEvent('dblclick');
+    now = 0;
+  }
+  else
+    this.triggerEvent('click');
+
+  if (!this.drag_active) {
+    // remove temp divs
+    this.del_dragfix();
+    rcube_event.cancel(e);
+  }
+
+  this.rows[id].clicked = now;
+  this.focus();
+
+  return false;
+},
+
+
+/**
+ * Check target of the current event
+ */
+is_event_target: function(e)
+{
+  var target = rcube_event.get_target(e),
+    tagname = target.tagName.toLowerCase();
+
+  return !(target && (tagname == 'input' || tagname == 'img' || (tagname != 'a' && target.onclick)));
+},
+
+
+/*
+ * Returns thread root ID for specified row ID
+ */
+find_root: function(uid)
+{
+   var r = this.rows[uid];
+
+   if (r && r.parent_uid)
+     return this.find_root(r.parent_uid);
+   else
+     return uid;
+},
+
+
+expand_row: function(e, id)
+{
+  var row = this.rows[id],
+    evtarget = rcube_event.get_target(e),
+    mod_key = rcube_event.get_modifier(e);
+
+  // Don't treat double click on the expando as double click on the message.
+  row.clicked = 0;
+
+  if (row.expanded) {
+    evtarget.className = 'collapsed';
+    if (mod_key == CONTROL_KEY || this.multiexpand)
+      this.collapse_all(row);
+    else
+      this.collapse(row);
+  }
+  else {
+    evtarget.className = 'expanded';
+    if (mod_key == CONTROL_KEY || this.multiexpand)
+      this.expand_all(row);
+    else
+     this.expand(row);
+  }
+},
+
+collapse: function(row)
+{
+  var r, depth = row.depth,
+    new_row = row ? row.obj.nextSibling : null;
+
+  row.expanded = false;
+  this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
+
+  while (new_row) {
+    if (new_row.nodeType == 1) {
+      r = this.rows[new_row.uid];
+      if (r && r.depth <= depth)
+        break;
+
+      $(new_row).css('display', 'none');
+      if (r.expanded) {
+        r.expanded = false;
+        this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
+      }
+    }
+    new_row = new_row.nextSibling;
+  }
+
+  this.resize();
+  this.triggerEvent('listupdate');
+
+  return false;
+},
+
+expand: function(row)
+{
+  var r, p, depth, new_row, last_expanded_parent_depth;
+
+  if (row) {
+    row.expanded = true;
+    depth = row.depth;
+    new_row = row.obj.nextSibling;
+    this.update_expando(row.id, true);
+    this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
+  }
+  else {
+    var tbody = this.tbody;
+    new_row = tbody.firstChild;
+    depth = 0;
+    last_expanded_parent_depth = 0;
+  }
+
+  while (new_row) {
+    if (new_row.nodeType == 1) {
+      r = this.rows[new_row.uid];
+      if (r) {
+        if (row && (!r.depth || r.depth <= depth))
+          break;
+
+        if (r.parent_uid) {
+          p = this.rows[r.parent_uid];
+          if (p && p.expanded) {
+            if ((row && p == row) || last_expanded_parent_depth >= p.depth - 1) {
+              last_expanded_parent_depth = p.depth;
+              $(new_row).css('display', '');
+              r.expanded = true;
+              this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
+            }
+          }
+          else
+            if (row && (! p || p.depth <= depth))
+              break;
+        }
+      }
+    }
+    new_row = new_row.nextSibling;
+  }
+
+  this.resize();
+  this.triggerEvent('listupdate');
+  return false;
+},
+
+
+collapse_all: function(row)
+{
+  var depth, new_row, r;
+
+  if (row) {
+    row.expanded = false;
+    depth = row.depth;
+    new_row = row.obj.nextSibling;
+    this.update_expando(row.id);
+    this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
+
+    // don't collapse sub-root tree in multiexpand mode 
+    if (depth && this.multiexpand)
+      return false;
+  }
+  else {
+    new_row = this.tbody.firstChild;
+    depth = 0;
+  }
+
+  while (new_row) {
+    if (new_row.nodeType == 1) {
+      if (r = this.rows[new_row.uid]) {
+        if (row && (!r.depth || r.depth <= depth))
+          break;
+
+        if (row || r.depth)
+          $(new_row).css('display', 'none');
+        if (r.has_children && r.expanded) {
+          r.expanded = false;
+          this.update_expando(r.id, false);
+          this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
+        }
+      }
+    }
+    new_row = new_row.nextSibling;
+  }
+
+  this.resize();
+  this.triggerEvent('listupdate');
+  return false;
+},
+
+
+expand_all: function(row)
+{
+  var depth, new_row, r;
+
+  if (row) {
+    row.expanded = true;
+    depth = row.depth;
+    new_row = row.obj.nextSibling;
+    this.update_expando(row.id, true);
+    this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
+  }
+  else {
+    new_row = this.tbody.firstChild;
+    depth = 0;
+  }
+
+  while (new_row) {
+    if (new_row.nodeType == 1) {
+      if (r = this.rows[new_row.uid]) {
+        if (row && r.depth <= depth)
+          break;
+
+        $(new_row).css('display', '');
+        if (r.has_children && !r.expanded) {
+          r.expanded = true;
+          this.update_expando(r.id, true);
+          this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
+        }
+      }
+    }
+    new_row = new_row.nextSibling;
+  }
+
+  this.resize();
+  this.triggerEvent('listupdate');
+  return false;
+},
+
+
+update_expando: function(id, expanded)
+{
+  var expando = document.getElementById('rcmexpando' + id);
+  if (expando)
+    expando.className = expanded ? 'expanded' : 'collapsed';
+},
+
+get_row_uid: function(row)
+{
+  if (!row)
+    return;
+
+  if (!row.uid) {
+    var uid = $(row).data('uid');
+    if (uid)
+      row.uid = uid;
+    else if (String(row.id).match(this.id_regexp))
+      row.uid = RegExp.$1;
+  }
+
+  return row.uid;
+},
+
+/**
+ * get first/next/previous/last rows that are not hidden
+ */
+get_next_row: function()
+{
+  if (!this.rowcount)
+    return false;
+
+  var last_selected_row = this.rows[this.last_selected],
+    new_row = last_selected_row ? last_selected_row.obj.nextSibling : null;
+
+  while (new_row && (new_row.nodeType != 1 || new_row.style.display == 'none'))
+    new_row = new_row.nextSibling;
+
+  return new_row;
+},
+
+get_prev_row: function()
+{
+  if (!this.rowcount)
+    return false;
+
+  var last_selected_row = this.rows[this.last_selected],
+    new_row = last_selected_row ? last_selected_row.obj.previousSibling : null;
+
+  while (new_row && (new_row.nodeType != 1 || new_row.style.display == 'none'))
+    new_row = new_row.previousSibling;
+
+  return new_row;
+},
+
+get_first_row: function()
+{
+  if (this.rowcount) {
+    var i, uid, rows = this.tbody.childNodes;
+
+    for (i=0; i<rows.length; i++)
+      if (rows[i].id && (uid = this.get_row_uid(rows[i])))
+        return uid;
+  }
+
+  return null;
+},
+
+get_last_row: function()
+{
+  if (this.rowcount) {
+    var i, uid, rows = this.tbody.childNodes;
+
+    for (i=rows.length-1; i>=0; i--)
+      if (rows[i].id && (uid = this.get_row_uid(rows[i])))
+        return uid;
+  }
+
+  return null;
+},
+
+row_tagname: function()
+{
+  var row_tagnames = { table:'tr', ul:'li', '*':'div' };
+  return row_tagnames[this.tagname] || row_tagnames['*'];
+},
+
+col_tagname: function()
+{
+  var col_tagnames = { table:'td', '*':'span' };
+  return col_tagnames[this.tagname] || col_tagnames['*'];
+},
+
+get_cell: function(row, index)
+{
+  return $(this.col_tagname(), row).eq(index);
+},
+
+/**
+ * selects or unselects the proper row depending on the modifier key pressed
+ */
+select_row: function(id, mod_key, with_mouse)
+{
+  var select_before = this.selection.join(','),
+    in_selection_before = this.in_selection(id);
+
+  if (!this.multiselect && with_mouse)
+    mod_key = 0;
+
+  if (!this.shift_start)
+    this.shift_start = id
+
+  if (!mod_key) {
+    this.shift_start = id;
+    this.highlight_row(id, false);
+    this.multi_selecting = false;
+  }
+  else {
+    switch (mod_key) {
+      case SHIFT_KEY:
+        this.shift_select(id, false);
+        break;
+
+      case CONTROL_KEY:
+        if (with_mouse) {
+          this.shift_start = id;
+          this.highlight_row(id, true);
+        }
+        break;
+
+      case CONTROL_SHIFT_KEY:
+        this.shift_select(id, true);
+        break;
+
+      default:
+        this.highlight_row(id, false);
+        break;
+    }
+
+    this.multi_selecting = true;
+  }
+
+  if (this.last_selected && this.rows[this.last_selected]) {
+    $(this.rows[this.last_selected].obj).removeClass('focused')
+      .find(this.col_tagname()).eq(this.subject_col).removeAttr('tabindex');
+  }
+
+  // unselect if toggleselect is active and the same row was clicked again
+  if (this.toggleselect && in_selection_before && !mod_key) {
+    this.clear_selection();
+  }
+  // trigger event if selection changed
+  else if (this.selection.join(',') != select_before) {
+    this.triggerEvent('select');
+  }
+
+  if (this.rows[id]) {
+    $(this.rows[id].obj).addClass('focused');
+    // set cursor focus to link inside selected row
+    if (this.focused)
+      this.focus_noscroll($(this.rows[id].obj).find(this.col_tagname()).eq(this.subject_col).attr('tabindex', '0'));
+  }
+
+  if (!this.selection.length)
+    this.shift_start = null;
+
+  this.last_selected = id;
+},
+
+
+/**
+ * Alias method for select_row
+ */
+select: function(id)
+{
+  this.select_row(id, false);
+  this.scrollto(id);
+},
+
+
+/**
+ * Select row next to the last selected one.
+ * Either below or above.
+ */
+select_next: function()
+{
+  var next_row = this.get_next_row(),
+    prev_row = this.get_prev_row(),
+    new_row = (next_row) ? next_row : prev_row;
+
+  if (new_row)
+    this.select_row(new_row.uid, false, false);
+},
+
+
+/**
+ * Select first row 
+ */
+select_first: function(mod_key)
+{
+  var row = this.get_first_row();
+  if (row) {
+    this.select_row(row, mod_key, false);
+    this.scrollto(row);
+  }
+},
+
+
+/**
+ * Select last row
+ */
+select_last: function(mod_key)
+{
+  var row = this.get_last_row();
+  if (row) {
+    this.select_row(row, mod_key, false);
+    this.scrollto(row);
+  }
+},
+
+
+/**
+ * Add all childs of the given row to selection
+ */
+select_children: function(uid)
+{
+  var i, children = this.row_children(uid), len = children.length;
+
+  for (i=0; i<len; i++)
+    if (!this.in_selection(children[i]))
+      this.select_row(children[i], CONTROL_KEY, true);
+},
+
+
+/**
+ * Perform selection when shift key is pressed
+ */
+shift_select: function(id, control)
+{
+  if (!this.rows[this.shift_start] || !this.selection.length)
+    this.shift_start = id;
+
+  var n, i, j, to_row = this.rows[id],
+    from_rowIndex = this._rowIndex(this.rows[this.shift_start].obj),
+    to_rowIndex = this._rowIndex(to_row.obj);
+
+  // if we're going down the list, and we hit a thread, and it's closed, select the whole thread
+  if (from_rowIndex < to_rowIndex && !to_row.expanded && to_row.has_children)
+    if (to_row = this.rows[(this.row_children(id)).pop()])
+      to_rowIndex = this._rowIndex(to_row.obj);
+
+  i = ((from_rowIndex < to_rowIndex) ? from_rowIndex : to_rowIndex),
+  j = ((from_rowIndex > to_rowIndex) ? from_rowIndex : to_rowIndex);
+
+  // iterate through the entire message list
+  for (n in this.rows) {
+    if (this._rowIndex(this.rows[n].obj) >= i && this._rowIndex(this.rows[n].obj) <= j) {
+      if (!this.in_selection(n)) {
+        this.highlight_row(n, true);
+      }
+    }
+    else {
+      if (this.in_selection(n) && !control) {
+        this.highlight_row(n, true);
+      }
+    }
+  }
+},
+
+
+/**
+ * Helper method to emulate the rowIndex property of non-tr elements
+ */
+_rowIndex: function(obj)
+{
+  return (obj.rowIndex !== undefined) ? obj.rowIndex : $(obj).prevAll().length;
+},
+
+/**
+ * Check if given id is part of the current selection
+ */
+in_selection: function(id, index)
+{
+  for (var n in this.selection)
+    if (this.selection[n] == id)
+      return index ? parseInt(n) : true;
+
+  return false;
+},
+
+
+/**
+ * Select each row in list
+ */
+select_all: function(filter)
+{
+  if (!this.rowcount)
+    return false;
+
+  // reset but remember selection first
+  var n, select_before = this.selection.join(',');
+  this.selection = [];
+
+  for (n in this.rows) {
+    if (!filter || this.rows[n][filter] == true) {
+      this.last_selected = n;
+      this.highlight_row(n, true, true);
+    }
+    else {
+      $(this.rows[n].obj).removeClass('selected').removeAttr('aria-selected');
+    }
+  }
+
+  // trigger event if selection changed
+  if (this.selection.join(',') != select_before)
+    this.triggerEvent('select');
+
+  this.focus();
+
+  return true;
+},
+
+
+/**
+ * Invert selection
+ */
+invert_selection: function()
+{
+  if (!this.rowcount)
+    return false;
+
+  // remember old selection
+  var n, select_before = this.selection.join(',');
+
+  for (n in this.rows)
+    this.highlight_row(n, true);
+
+  // trigger event if selection changed
+  if (this.selection.join(',') != select_before)
+    this.triggerEvent('select');
+
+  this.focus();
+
+  return true;
+},
+
+
+/**
+ * Unselect selected row(s)
+ */
+clear_selection: function(id, no_event)
+{
+  var n, num_select = this.selection.length;
+
+  // one row
+  if (id) {
+    for (n in this.selection)
+      if (this.selection[n] == id) {
+        this.selection.splice(n,1);
+        break;
+      }
+  }
+  // all rows
+  else {
+    for (n in this.selection)
+      if (this.rows[this.selection[n]]) {
+        $(this.rows[this.selection[n]].obj).removeClass('selected').removeAttr('aria-selected');
+      }
+
+    this.selection = [];
+  }
+
+  if (num_select && !this.selection.length && !no_event) {
+    this.triggerEvent('select');
+    this.last_selected = null;
+  }
+},
+
+
+/**
+ * Getter for the selection array
+ */
+get_selection: function(deep)
+{
+  var res = $.merge([], this.selection);
+
+  // return children of selected threads even if only root is selected
+  if (deep !== false && res.length) {
+    for (var uid, uids, i=0, len=res.length; i<len; i++) {
+      uid = res[i];
+      if (this.rows[uid] && this.rows[uid].has_children && !this.rows[uid].expanded) {
+        uids = this.row_children(uid);
+        for (var j=0, uids_len=uids.length; j<uids_len; j++) {
+          uid = uids[j];
+          if (!this.in_selection(uid))
+            res.push(uid);
+        }
+      }
+    }
+  }
+
+  return res;
+},
+
+
+/**
+ * Return the ID if only one row is selected
+ */
+get_single_selection: function()
+{
+  if (this.selection.length == 1)
+    return this.selection[0];
+  else
+    return null;
+},
+
+
+/**
+ * Highlight/unhighlight a row
+ */
+highlight_row: function(id, multiple, norecur)
+{
+  if (!this.rows[id])
+    return;
+
+  if (!multiple) {
+    if (this.selection.length > 1 || !this.in_selection(id)) {
+      this.clear_selection(null, true);
+      this.selection[0] = id;
+      $(this.rows[id].obj).addClass('selected').attr('aria-selected', 'true');
+    }
+  }
+  else {
+    var pre, post, p = this.in_selection(id, true);
+
+    if (p === false) { // select row
+      this.selection.push(id);
+      $(this.rows[id].obj).addClass('selected').attr('aria-selected', 'true');
+      if (!norecur && !this.rows[id].expanded)
+        this.highlight_children(id, true);
+    }
+    else { // unselect row
+      pre = this.selection.slice(0, p);
+      post = this.selection.slice(p+1, this.selection.length);
+
+      this.selection = pre.concat(post);
+      $(this.rows[id].obj).removeClass('selected').removeAttr('aria-selected');
+      if (!norecur && !this.rows[id].expanded)
+        this.highlight_children(id, false);
+    }
+  }
+},
+
+
+/**
+ * Highlight/unhighlight all childs of the given row
+ */
+highlight_children: function(id, status)
+{
+  var i, selected,
+    children = this.row_children(id), len = children.length;
+
+  for (i=0; i<len; i++) {
+    selected = this.in_selection(children[i]);
+    if ((status && !selected) || (!status && selected))
+      this.highlight_row(children[i], true, true);
+  }
+},
+
+
+/**
+ * Handler for keyboard events
+ */
+key_press: function(e)
+{
+  var target = e.target || {};
+
+  if (!this.focused || target.nodeName == 'INPUT' || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')
+    return true;
+
+  var keyCode = rcube_event.get_keycode(e),
+    mod_key = rcube_event.get_modifier(e);
+
+  switch (keyCode) {
+    case 40:
+    case 38:
+    case 63233: // "down", in safari keypress
+    case 63232: // "up", in safari keypress
+      // Stop propagation so that the browser doesn't scroll
+      rcube_event.cancel(e);
+      return this.use_arrow_key(keyCode, mod_key);
+
+    case 32:
+      rcube_event.cancel(e);
+      return this.select_row(this.last_selected, mod_key, true);
+
+    case 37: // Left arrow key
+    case 39: // Right arrow key
+      // Stop propagation
+      rcube_event.cancel(e);
+      var ret = this.use_arrow_key(keyCode, mod_key);
+      this.key_pressed = keyCode;
+      this.modkey = mod_key;
+      this.triggerEvent('keypress');
+      this.modkey = 0;
+      return ret;
+
+    case 36: // Home
+      this.select_first(mod_key);
+      return rcube_event.cancel(e);
+
+    case 35: // End
+      this.select_last(mod_key);
+      return rcube_event.cancel(e);
+
+    case 27:
+      if (this.drag_active)
+        return this.drag_mouse_up(e);
+
+      if (this.col_drag_active) {
+        this.selected_column = null;
+        return this.column_drag_mouse_up(e);
+      }
+
+      return rcube_event.cancel(e);
+
+    case 9: // Tab
+      this.blur();
+      break;
+
+    case 13: // Enter
+      if (!this.selection.length)
+        this.select_row(this.last_selected, mod_key, false);
+
+    default:
+      this.key_pressed = keyCode;
+      this.modkey = mod_key;
+      this.triggerEvent('keypress');
+      this.modkey = 0;
+
+      if (this.key_pressed == this.BACKSPACE_KEY)
+        return rcube_event.cancel(e);
+  }
+
+  return true;
+},
+
+
+/**
+ * Special handling method for arrow keys
+ */
+use_arrow_key: function(keyCode, mod_key)
+{
+  var new_row,
+    selected_row = this.rows[this.last_selected];
+
+  // Safari uses the nonstandard keycodes 63232/63233 for up/down, if we're
+  // using the keypress event (but not the keydown or keyup event).
+  if (keyCode == 40 || keyCode == 63233) // down arrow key pressed
+    new_row = this.get_next_row();
+  else if (keyCode == 38 || keyCode == 63232) // up arrow key pressed
+    new_row = this.get_prev_row();
+  else {
+    if (!selected_row || !selected_row.has_children)
+      return;
+
+    // expand
+    if (keyCode == 39) {
+      if (selected_row.expanded)
+        return;
+
+      if (mod_key == CONTROL_KEY || this.multiexpand)
+        this.expand_all(selected_row);
+      else
+        this.expand(selected_row);
+    }
+    // collapse
+    else {
+      if (!selected_row.expanded)
+        return;
+
+      if (mod_key == CONTROL_KEY || this.multiexpand)
+        this.collapse_all(selected_row);
+      else
+        this.collapse(selected_row);
+    }
+
+    this.update_expando(selected_row.id, selected_row.expanded);
+
+    return false;
+  }
+
+  if (new_row) {
+    // simulate ctr-key if no rows are selected
+    if (!mod_key && !this.selection.length)
+      mod_key = CONTROL_KEY;
+
+    this.select_row(new_row.uid, mod_key, false);
+    this.scrollto(new_row.uid);
+  }
+  else if (!new_row && !selected_row) {
+    // select the first row if none selected yet
+    this.select_first(CONTROL_KEY);
+  }
+
+  return false;
+},
+
+
+/**
+ * Try to scroll the list to make the specified row visible
+ */
+scrollto: function(id)
+{
+  var row = this.rows[id] ? this.rows[id].obj : null;
+
+  if (row && this.frame) {
+    var scroll_to = Number(row.offsetTop),
+      head_offset = 0;
+
+    // expand thread if target row is hidden (collapsed)
+    if (!scroll_to && this.rows[id].parent_uid) {
+      var parent = this.find_root(this.rows[id].uid);
+      this.expand_all(this.rows[parent]);
+      scroll_to = Number(row.offsetTop);
+    }
+
+    if (this.fixed_header)
+      head_offset = Number(this.thead.offsetHeight);
+
+    // if row is above the frame (or behind header)
+    if (scroll_to < Number(this.frame.scrollTop) + head_offset) {
+      // scroll window so that row isn't behind header
+      this.frame.scrollTop = scroll_to - head_offset;
+    }
+    else if (scroll_to + Number(row.offsetHeight) > Number(this.frame.scrollTop) + Number(this.frame.offsetHeight))
+      this.frame.scrollTop = (scroll_to + Number(row.offsetHeight)) - Number(this.frame.offsetHeight);
+  }
+},
+
+
+/**
+ * Handler for mouse move events
+ */
+drag_mouse_move: function(e)
+{
+  // convert touch event
+  if (e.type == 'touchmove') {
+    if (e.touches.length == 1 && e.changedTouches.length == 1)
+      e = rcube_event.touchevent(e.changedTouches[0]);
+    else
+      return rcube_event.cancel(e);
+  }
+
+  if (this.drag_start) {
+    // check mouse movement, of less than 3 pixels, don't start dragging
+    var m = rcube_event.get_mouse_pos(e),
+      limit = 10, selection = [], self = this;
+
+    if (!this.drag_mouse_start || (Math.abs(m.x - this.drag_mouse_start.x) < 3 && Math.abs(m.y - this.drag_mouse_start.y) < 3))
+      return false;
+
+    // remember dragging start position
+    this.drag_start_pos = {left: m.x, top: m.y};
+
+    // initialize drag layer
+    if (!this.draglayer)
+      this.draglayer = $('<div>').attr('id', 'rcmdraglayer')
+        .css({position: 'absolute', display: 'none', 'z-index': 2000})
+        .appendTo(document.body);
+    else
+      this.draglayer.html('');
+
+    // get selected rows (in display order), don't use this.selection here
+    $(this.row_tagname() + '.selected', this.tbody).each(function() {
+      var uid = self.get_row_uid(this), row = self.rows[uid];
+
+      if (!row || $.inArray(uid, selection) > -1)
+        return;
+
+      selection.push(uid);
+
+      // also handle children of (collapsed) trees for dragging (they might be not selected)
+      if (row.has_children && !row.expanded)
+        $.each(self.row_children(uid), function() {
+          if ($.inArray(this, selection) > -1)
+            return;
+          selection.push(this);
+        });
+
+      // break the loop asap
+      if (selection.length > limit + 1)
+        return false;
+    });
+
+    // append subject (of every row up to the limit) to the drag layer
+    $.each(selection, function(i, uid) {
+      if (i > limit) {
+        self.draglayer.append('...');
+        return false;
+      }
+
+      $('> ' + self.col_tagname(), self.rows[uid].obj).each(function(n, cell) {
+        if (self.subject_col < 0 || (self.subject_col >= 0 && self.subject_col == n)) {
+          // remove elements marked with "skip-on-drag" class
+          cell = $(cell).clone();
+          $(cell).find('.skip-on-drag').remove();
+
+          var subject = cell.text();
+
+          if (subject) {
+            // remove leading spaces
+            subject = $.trim(subject);
+            // truncate line to 50 characters
+            subject = (subject.length > 50 ? subject.substring(0, 50) + '...' : subject);
+
+            self.draglayer.append($('<div>').text(subject));
+            return false;
+          }
+        }
+      });
+    });
+
+    this.draglayer.show();
+    this.drag_active = true;
+    this.triggerEvent('dragstart');
+  }
+
+  if (this.drag_active && this.draglayer) {
+    var pos = rcube_event.get_mouse_pos(e);
+    this.draglayer.css({ left:(pos.x+20)+'px', top:(pos.y-5 + (bw.ie ? document.documentElement.scrollTop : 0))+'px' });
+    this.triggerEvent('dragmove', e?e:window.event);
+  }
+
+  this.drag_start = false;
+
+  return false;
+},
+
+
+/**
+ * Handler for mouse up events
+ */
+drag_mouse_up: function(e)
+{
+  document.onmousemove = null;
+
+  if (e.type == 'touchend') {
+    if (e.changedTouches.length != 1)
+      return rcube_event.cancel(e);
+  }
+
+  if (this.draglayer && this.draglayer.is(':visible')) {
+    if (this.drag_start_pos)
+      this.draglayer.animate(this.drag_start_pos, 300, 'swing').hide(20);
+    else
+      this.draglayer.hide();
+  }
+
+  if (this.drag_active)
+    this.focus();
+  this.drag_active = false;
+
+  rcube_event.remove_listener({event:'mousemove', object:this, method:'drag_mouse_move'});
+  rcube_event.remove_listener({event:'mouseup', object:this, method:'drag_mouse_up'});
+
+  if (bw.touch) {
+    rcube_event.remove_listener({event:'touchmove', object:this, method:'drag_mouse_move'});
+    rcube_event.remove_listener({event:'touchend', object:this, method:'drag_mouse_up'});
+  }
+
+  // remove temp divs
+  this.del_dragfix();
+
+  this.triggerEvent('dragend', e);
+
+  return rcube_event.cancel(e);
+},
+
+
+/**
+ * Handler for mouse move events for dragging list column
+ */
+column_drag_mouse_move: function(e)
+{
+  if (this.drag_start) {
+    // check mouse movement, of less than 3 pixels, don't start dragging
+    var i, m = rcube_event.get_mouse_pos(e);
+
+    if (!this.drag_mouse_start || (Math.abs(m.x - this.drag_mouse_start.x) < 3 && Math.abs(m.y - this.drag_mouse_start.y) < 3))
+      return false;
+
+    if (!this.col_draglayer) {
+      var lpos = $(this.list).offset(),
+        cells = this.thead.rows[0].cells;
+
+      // fix layer position when list is scrolled
+      lpos.top += this.list.scrollTop + this.list.parentNode.scrollTop;
+
+      // create dragging layer
+      this.col_draglayer = $('<div>').attr('id', 'rcmcoldraglayer')
+        .css(lpos).css({ position:'absolute', 'z-index':2001,
+           'background-color':'white', opacity:0.75,
+           height: (this.frame.offsetHeight-2)+'px', width: (this.frame.offsetWidth-2)+'px' })
+        .appendTo(document.body)
+        // ... and column position indicator
+       .append($('<div>').attr('id', 'rcmcolumnindicator')
+          .css({ position:'absolute', 'border-right':'2px dotted #555', 
+          'z-index':2002, height: (this.frame.offsetHeight-2)+'px' }));
+
+      this.cols = [];
+      this.list_pos = this.list_min_pos = lpos.left;
+      // save columns positions
+      for (i=0; i<cells.length; i++) {
+        this.cols[i] = cells[i].offsetWidth;
+        if (this.column_fixed !== null && i <= this.column_fixed) {
+          this.list_min_pos += this.cols[i];
+        }
+      }
+    }
+
+    this.col_draglayer.show();
+    this.col_drag_active = true;
+    this.triggerEvent('column_dragstart');
+  }
+
+  // set column indicator position
+  if (this.col_drag_active && this.col_draglayer) {
+    var i, cpos = 0, pos = rcube_event.get_mouse_pos(e);
+
+    for (i=0; i<this.cols.length; i++) {
+      if (pos.x >= this.cols[i]/2 + this.list_pos + cpos)
+        cpos += this.cols[i];
+      else
+        break;
+    }
+
+    // handle fixed columns on left
+    if (i == 0 && this.list_min_pos > pos.x)
+      cpos = this.list_min_pos - this.list_pos;
+    // empty list needs some assignment
+    else if (!this.list.rowcount && i == this.cols.length)
+      cpos -= 2;
+    $('#rcmcolumnindicator').css({ width: cpos+'px'});
+    this.triggerEvent('column_dragmove', e?e:window.event);
+  }
+
+  this.drag_start = false;
+
+  return false;
+},
+
+
+/**
+ * Handler for mouse up events for dragging list columns
+ */
+column_drag_mouse_up: function(e)
+{
+  document.onmousemove = null;
+
+  if (this.col_draglayer) {
+    (this.col_draglayer).remove();
+    this.col_draglayer = null;
+  }
+
+  rcube_event.remove_listener({event:'mousemove', object:this, method:'column_drag_mouse_move'});
+  rcube_event.remove_listener({event:'mouseup', object:this, method:'column_drag_mouse_up'});
+
+  // remove temp divs
+  this.del_dragfix();
+
+  if (this.col_drag_active) {
+    this.col_drag_active = false;
+    this.focus();
+    this.triggerEvent('column_dragend', e);
+
+    if (this.selected_column !== null && this.cols && this.cols.length) {
+      var i, cpos = 0, pos = rcube_event.get_mouse_pos(e);
+
+      // find destination position
+      for (i=0; i<this.cols.length; i++) {
+        if (pos.x >= this.cols[i]/2 + this.list_pos + cpos)
+          cpos += this.cols[i];
+        else
+          break;
+      }
+
+      if (i != this.selected_column && i != this.selected_column+1) {
+        this.column_replace(this.selected_column, i);
+      }
+    }
+  }
+
+  return rcube_event.cancel(e);
+},
+
+
+/**
+ * Returns IDs of all rows in a thread (except root) for specified root
+ */
+row_children: function(uid)
+{
+  if (!this.rows[uid] || !this.rows[uid].has_children)
+    return [];
+
+  var res = [], depth = this.rows[uid].depth,
+    row = this.rows[uid].obj.nextSibling;
+
+  while (row) {
+    if (row.nodeType == 1) {
+      if (r = this.rows[row.uid]) {
+        if (!r.depth || r.depth <= depth)
+          break;
+        res.push(r.uid);
+      }
+    }
+    row = row.nextSibling;
+  }
+
+  return res;
+},
+
+
+/**
+ * Creates a layer for drag&drop over iframes
+ */
+add_dragfix: function()
+{
+  $('iframe').each(function() {
+    $('<div class="iframe-dragdrop-fix"></div>')
+      .css({background: '#fff',
+        width: this.offsetWidth+'px', height: this.offsetHeight+'px',
+        position: 'absolute', opacity: '0.001', zIndex: 1000
+      })
+      .css($(this).offset())
+      .appendTo(document.body);
+  });
+},
+
+
+/**
+ * Removes the layer for drag&drop over iframes
+ */
+del_dragfix: function()
+{
+  $('div.iframe-dragdrop-fix').remove();
+},
+
+
+/**
+ * Replaces two columns
+ */
+column_replace: function(from, to)
+{
+  // only supported for <table> lists
+  if (!this.thead || !this.thead.rows)
+    return;
+
+  var len, cells = this.thead.rows[0].cells,
+    elem = cells[from],
+    before = cells[to],
+    td = document.createElement('td');
+
+  // replace header cells
+  if (before)
+    cells[0].parentNode.insertBefore(td, before);
+  else
+    cells[0].parentNode.appendChild(td);
+  cells[0].parentNode.replaceChild(elem, td);
+
+  // replace list cells
+  for (r=0, len=this.tbody.rows.length; r<len; r++) {
+    row = this.tbody.rows[r];
+
+    elem = row.cells[from];
+    before = row.cells[to];
+    td = document.createElement('td');
+
+    if (before)
+      row.insertBefore(td, before);
+    else
+      row.appendChild(td);
+    row.replaceChild(elem, td);
+  }
+
+  // update subject column position
+  if (this.subject_col == from)
+    this.subject_col = to > from ? to - 1 : to;
+  else if (this.subject_col < from && to <= this.subject_col)
+    this.subject_col++;
+  else if (this.subject_col > from && to >= this.subject_col)
+    this.subject_col--;
+
+  if (this.fixed_header)
+    this.init_header();
+
+  this.triggerEvent('column_replace');
+}
+
+};
+
+rcube_list_widget.prototype.addEventListener = rcube_event_engine.prototype.addEventListener;
+rcube_list_widget.prototype.removeEventListener = rcube_event_engine.prototype.removeEventListener;
+rcube_list_widget.prototype.triggerEvent = rcube_event_engine.prototype.triggerEvent;
+
+// static
+rcube_list_widget._instances = [];