From 10abf2bc2d08526ad69c6e8691b0a3384603fcc1 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Mon, 03 Feb 2014 06:13:25 -0500
Subject: [PATCH] Fix bug where it wasn't possible to focus the messages list with mouse click on a record after the focus was put on preview frame.

---
 program/js/list.js |  591 ++++++++++++++++++++++++++++++++++++++++------------------
 1 files changed, 402 insertions(+), 189 deletions(-)

diff --git a/program/js/list.js b/program/js/list.js
index c6b0d3f..e05d9fb 100644
--- a/program/js/list.js
+++ b/program/js/list.js
@@ -20,7 +20,7 @@
 
 /**
  * Roundcube List Widget class
- * @contructor
+ * @constructor
  */
 function rcube_list_widget(list, p)
 {
@@ -30,8 +30,9 @@
   this.BACKSPACE_KEY = 8;
 
   this.list = list ? list : null;
-  this.frame = null;
-  this.rows = [];
+  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;
@@ -46,17 +47,15 @@
   this.keyboard = false;
   this.toggleselect = false;
 
-  this.dont_select = false;
   this.drag_active = false;
   this.col_drag_active = false;
   this.column_fixed = null;
   this.last_selected = 0;
   this.shift_start = 0;
-  this.in_selection_before = false;
   this.focused = false;
   this.drag_mouse_start = null;
-  this.dblclick_time = 600;
-  this.row_init = function(){};
+  this.dblclick_time = 500; // default value on MS Windows is 500
+  this.row_init = function(){};  // @deprecated; use list.addEventListener('initrow') instead
 
   // overwrite default paramaters
   if (p && typeof p === 'object')
@@ -73,15 +72,22 @@
  */
 init: function()
 {
-  if (this.list && this.list.tBodies[0]) {
-    this.rows = [];
+  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.tbody) {
+    this.rows = {};
     this.rowcount = 0;
 
-    var r, len, rows = this.list.tBodies[0].rows;
+    var r, len, rows = this.tbody.childNodes;
 
     for (r=0, len=rows.length; r<len; r++) {
-      this.init_row(rows[r]);
-      this.rowcount++;
+      this.rowcount += this.init_row(rows[r]) ? 1 : 0;
     }
 
     this.init_header();
@@ -91,6 +97,8 @@
     if (this.keyboard)
       rcube_event.add_listener({event:'keydown', object:this, method:'key_press'});
   }
+
+  return this;
 },
 
 
@@ -100,7 +108,7 @@
 init_row: function(row)
 {
   // make references in internal array and set event handlers
-  if (row && String(row.id).match(/^rcmrow([a-z0-9\-_=\+\/]+)/i)) {
+  if (row && String(row.id).match(this.id_regexp)) {
     var self = this,
       uid = RegExp.$1;
     row.uid = uid;
@@ -110,24 +118,35 @@
     row.onmousedown = function(e){ return self.drag_row(e, this.uid); };
     row.onmouseup = function(e){ return self.click_row(e, this.uid); };
 
-    if (bw.mobile) {
+    if (bw.touch) {
       row.addEventListener('touchstart', function(e) {
         if (e.touches.length == 1) {
-          if (!self.drag_row(rcube_event.touchevent(e.touches[0]), this.uid))
-            e.preventDefault();
+          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.click_row(rcube_event.touchevent(e.changedTouches[0]), this.uid))
+        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);
     }
 
     if (document.all)
       row.onselectstart = function() { return false; };
 
-    this.row_init(this.rows[uid]);
+    this.row_init(this.rows[uid]);  // legacy support
+    this.triggerEvent('initrow', this.rows[uid]);
+
+    return true;
   }
 },
 
@@ -137,16 +156,24 @@
  */
 init_header: function()
 {
-  if (this.list && this.list.tHead) {
+  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('tr td').attr('style', '');  // 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.list.tHead && this.list.tHead.rows) {
-      for (r=0; r<this.list.tHead.rows[0].cells.length; r++) {
+    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.list.tHead.rows[0].cells[r];
+        col = this.thead.rows[0].cells[r];
         col.onmousedown = function(e){ return p.drag_column(e, this); };
         this.colcount++;
       }
@@ -154,17 +181,72 @@
   }
 },
 
+init_fixed_header: function()
+{
+  var clone = $(this.list.tHead).clone();
+
+  if (!this.fixed_header) {
+    this.fixed_header = $('<table>')
+      .attr('class', this.list.className + ' fixedcopy')
+      .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');
+      if (!bw.webkit)
+        me.fixed_header.css('marginTop', (-w.scrollTop()) + 'px');
+    });
+  }
+  else {
+    $(this.fixed_header).find('thead').replaceWith(clone);
+  }
+
+  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 tr 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('tr td').each(function(index) {
+      $(this).css('width', column_widths[index]);
+    });
+
+    $(window).scroll();
+},
 
 /**
  * Remove all list rows
  */
 clear: function(sel)
 {
-  var tbody = document.createElement('tbody');
+  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.list.insertBefore(tbody, this.list.tBodies[0]);
-  this.list.removeChild(this.list.tBodies[1]);
-  this.rows = [];
+  this.rows = {};
   this.rowcount = 0;
 
   if (sel)
@@ -173,6 +255,9 @@
   // reset scroll position (in Opera)
   if (this.frame)
     this.frame.scrollTop = 0;
+
+  // fix list header after removing any rows
+  this.resize();
 },
 
 
@@ -181,37 +266,86 @@
  */
 remove_row: function(uid, sel_next)
 {
-  var obj = this.rows[uid] ? this.rows[uid].obj : null;
+  var self = this, node = this.rows[uid] ? this.rows[uid].obj : null;
 
-  if (!obj)
+  if (!node)
     return;
 
-  obj.style.display = 'none';
+  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, attop)
+insert_row: function(row, before)
 {
-  var tbody = this.list.tBodies[0];
+  var self = this, tbody = this.tbody;
 
-  if (attop && tbody.rows.length)
-    tbody.insertBefore(row, tbody.firstChild);
+  // create a real dom node first
+  if (row.nodeName === undefined) {
+    // for performance reasons use DOM instead of jQuery here
+    var domrow = document.createElement(this.row_tagname());
+    if (row.id) domrow.id = row.id;
+    if (row.className) domrow.className = row.className;
+    if (row.style) $.extend(domrow.style, row.style);
+
+    for (var domcell, col, i=0; row.cols && i < row.cols.length; i++) {
+      col = row.cols[i];
+      domcell = document.createElement(this.col_tagname());
+      if (col.className) domcell.className = col.className;
+      if (col.innerHTML) domcell.innerHTML = col.innerHTML;
+      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 domrow = row.obj;
+  for (var domcell, col, i=0; cols && i < cols.length; i++) {
+    this.get_cell(domrow, i).html(cols[i]);
+  }
+
+  if (newid) {
+    delete this.rows[id];
+    domrow.id = 'rcmrow' + newid;
+    this.init_row(domrow);
+
+    if (select)
+      this.selection[0] = newid;
+  }
+},
 
 
 /**
@@ -230,9 +364,9 @@
   }
 
   // Un-focus already focused elements (#1487123, #1487316, #1488600, #1488620)
-  $(':focus:not(body)').blur();
-  // un-focus iframe bodies (#1489058), this doesn't work in Opera and Chrome
-  $('iframe').contents().find('body').blur();
+  // It looks that window.focus() does the job for all browsers, but not Firefox (#1489058)
+  $('iframe,:focus:not(body)').blur();
+  window.focus();
 
   if (e || (e = window.event))
     rcube_event.cancel(e);
@@ -271,8 +405,8 @@
     this.add_dragfix();
 
     // find selected column number
-    for (var i=0; i<this.list.tHead.rows[0].cells.length; i++) {
-      if (col == this.list.tHead.rows[0].cells[i]) {
+    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;
       }
@@ -289,30 +423,28 @@
 drag_row: function(e, id)
 {
   // don't do anything (another action processed before)
-  var evtarget = rcube_event.get_target(e),
-    tagname = evtarget.tagName.toLowerCase();
-
-  if (this.dont_select || (evtarget && (tagname == 'input' || tagname == 'img')))
+  if (!this.is_event_target(e))
     return true;
 
   // accept right-clicks
   if (rcube_event.get_button(e) == 2)
     return true;
 
-  this.in_selection_before = this.in_selection(id) ? id : false;
+  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, false);
+    this.select_row(id, mod_key, true);
   }
 
-  if (this.draggable && this.selection.length) {
+  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.mobile) {
+    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'});
     }
@@ -330,31 +462,22 @@
  */
 click_row: function(e, id)
 {
-  var now = new Date().getTime(),
-    mod_key = rcube_event.get_modifier(e),
-    evtarget = rcube_event.get_target(e),
-    tagname = evtarget.tagName.toLowerCase();
-
-  if ((evtarget && (tagname == 'input' || tagname == 'img')))
+  // don't do anything (another action processed before)
+  if (!this.is_event_target(e))
     return true;
 
-  // don't do anything (another action processed before)
-  if (this.dont_select) {
-    this.dont_select = false;
-    return false;
-  }
-
-  var dblclicked = now - this.rows[id].clicked < this.dblclick_time;
+  var now = new Date().getTime(),
+    dblclicked = now - this.rows[id].clicked < this.dblclick_time;
 
   // unselects currently selected row
-  if (!this.drag_active && this.in_selection_before == id && !dblclicked)
-    this.select_row(id, mod_key, false);
+  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.rows && dblclicked && this.in_selection(id)) {
+  if (this.rowcount && dblclicked && this.in_selection(id)) {
     this.triggerEvent('dblclick');
     now = 0;
   }
@@ -369,6 +492,18 @@
 
   this.rows[id].clicked = now;
   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)));
 },
 
 
@@ -392,8 +527,6 @@
     evtarget = rcube_event.get_target(e),
     mod_key = rcube_event.get_modifier(e);
 
-  // Don't select this message
-  this.dont_select = true;
   // Don't treat double click on the expando as double click on the message.
   row.clicked = 0;
 
@@ -415,17 +548,18 @@
 
 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 });
-  var depth = row.depth;
-  var new_row = row ? row.obj.nextSibling : null;
-  var r;
 
   while (new_row) {
     if (new_row.nodeType == 1) {
-      var r = this.rows[new_row.uid];
+      r = this.rows[new_row.uid];
       if (r && r.depth <= depth)
         break;
+
       $(new_row).css('display', 'none');
       if (r.expanded) {
         r.expanded = false;
@@ -435,7 +569,9 @@
     new_row = new_row.nextSibling;
   }
 
+  this.resize();
   this.triggerEvent('listupdate');
+
   return false;
 },
 
@@ -451,7 +587,7 @@
     this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
   }
   else {
-    var tbody = this.list.tBodies[0];
+    var tbody = this.tbody;
     new_row = tbody.firstChild;
     depth = 0;
     last_expanded_parent_depth = 0;
@@ -483,6 +619,7 @@
     new_row = new_row.nextSibling;
   }
 
+  this.resize();
   this.triggerEvent('listupdate');
   return false;
 },
@@ -504,7 +641,7 @@
       return false;
   }
   else {
-    new_row = this.list.tBodies[0].firstChild;
+    new_row = this.tbody.firstChild;
     depth = 0;
   }
 
@@ -526,6 +663,7 @@
     new_row = new_row.nextSibling;
   }
 
+  this.resize();
   this.triggerEvent('listupdate');
   return false;
 },
@@ -543,7 +681,7 @@
     this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
   }
   else {
-    new_row = this.list.tBodies[0].firstChild;
+    new_row = this.tbody.firstChild;
     depth = 0;
   }
 
@@ -564,6 +702,7 @@
     new_row = new_row.nextSibling;
   }
 
+  this.resize();
   this.triggerEvent('listupdate');
   return false;
 },
@@ -582,7 +721,7 @@
  */
 get_next_row: function()
 {
-  if (!this.rows)
+  if (!this.rowcount)
     return false;
 
   var last_selected_row = this.rows[this.last_selected],
@@ -596,7 +735,7 @@
 
 get_prev_row: function()
 {
-  if (!this.rows)
+  if (!this.rowcount)
     return false;
 
   var last_selected_row = this.rows[this.last_selected],
@@ -611,10 +750,10 @@
 get_first_row: function()
 {
   if (this.rowcount) {
-    var i, len, rows = this.list.tBodies[0].rows;
+    var i, len, rows = this.tbody.childNodes;
 
     for (i=0, len=rows.length-1; i<len; i++)
-      if (rows[i].id && String(rows[i].id).match(/^rcmrow([a-z0-9\-_=\+\/]+)/i) && this.rows[RegExp.$1] != null)
+      if (rows[i].id && String(rows[i].id).match(this.id_regexp) && this.rows[RegExp.$1] != null)
         return RegExp.$1;
   }
 
@@ -624,16 +763,32 @@
 get_last_row: function()
 {
   if (this.rowcount) {
-    var i, rows = this.list.tBodies[0].rows;
+    var i, rows = this.tbody.childNodes;
 
     for (i=rows.length-1; i>=0; i--)
-      if (rows[i].id && String(rows[i].id).match(/^rcmrow([a-z0-9\-_=\+\/]+)/i) && this.rows[RegExp.$1] != null)
+      if (rows[i].id && String(rows[i].id).match(this.id_regexp) && this.rows[RegExp.$1] != null)
         return RegExp.$1;
   }
 
   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
@@ -641,6 +796,7 @@
 select_row: function(id, mod_key, with_mouse)
 {
   var select_before = this.selection.join(',');
+
   if (!this.multiselect)
     mod_key = 0;
 
@@ -659,8 +815,10 @@
         break;
 
       case CONTROL_KEY:
-        if (!with_mouse)
+        if (with_mouse) {
+          this.shift_start = id;
           this.highlight_row(id, true);
+        }
         break;
 
       case CONTROL_SHIFT_KEY:
@@ -671,6 +829,7 @@
         this.highlight_row(id, false);
         break;
     }
+
     this.multi_selecting = true;
   }
 
@@ -728,14 +887,8 @@
 {
   var row = this.get_first_row();
   if (row) {
-    if (mod_key) {
-      this.shift_select(row, mod_key);
-      this.triggerEvent('select');
-      this.scrollto(row);
-    }
-    else {
-      this.select(row);
-    }
+    this.select_row(row, mod_key, false);
+    this.scrollto(row);
   }
 },
 
@@ -747,14 +900,8 @@
 {
   var row = this.get_last_row();
   if (row) {
-    if (mod_key) {
-      this.shift_select(row, mod_key);
-      this.triggerEvent('select');
-      this.scrollto(row);
-    }
-    else {
-      this.select(row);
-    }
+    this.select_row(row, mod_key, false);
+    this.scrollto(row);
   }
 },
 
@@ -768,7 +915,7 @@
 
   for (i=0; i<len; i++)
     if (!this.in_selection(children[i]))
-      this.select_row(children[i], CONTROL_KEY);
+      this.select_row(children[i], CONTROL_KEY, true);
 },
 
 
@@ -781,19 +928,20 @@
     this.shift_start = id;
 
   var n, i, j, to_row = this.rows[id],
-    from_rowIndex = this.rows[this.shift_start].obj.rowIndex,
-    to_rowIndex = to_row.obj.rowIndex;
+    from_rowIndex = this._rowIndex(this.rows[this.shift_start].obj),
+    to_rowIndex = this._rowIndex(to_row.obj);
 
-  if (!to_row.expanded && to_row.has_children)
+  // 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 = to_row.obj.rowIndex;
+      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.rows[n].obj.rowIndex >= i && this.rows[n].obj.rowIndex <= j) {
+    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);
       }
@@ -808,12 +956,20 @@
 
 
 /**
+ * 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)
 {
   for (var n in this.selection)
-    if (this.selection[n]==id)
+    if (this.selection[n] == id)
       return true;
 
   return false;
@@ -825,7 +981,7 @@
  */
 select_all: function(filter)
 {
-  if (!this.rows || !this.rows.length)
+  if (!this.rowcount)
     return false;
 
   // reset but remember selection first
@@ -857,7 +1013,7 @@
  */
 invert_selection: function()
 {
-  if (!this.rows || !this.rows.length)
+  if (!this.rowcount)
     return false;
 
   // remember old selection
@@ -909,9 +1065,26 @@
 /**
  * Getter for the selection array
  */
-get_selection: function()
+get_selection: function(deep)
 {
-  return this.selection;
+  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;
 },
 
 
@@ -985,6 +1158,7 @@
 key_press: function(e)
 {
   var target = e.target || {};
+
   if (this.focused != true || target.nodeName == 'INPUT' || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')
     return true;
 
@@ -999,32 +1173,41 @@
       // Stop propagation so that the browser doesn't scroll
       rcube_event.cancel(e);
       return this.use_arrow_key(keyCode, mod_key);
-    case 61:
-    case 107: // Plus sign on a numeric keypad (fc11 + firefox 3.5.2)
-    case 109:
+
     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_plusminus_key(keyCode, mod_key);
+      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);
+
     default:
       this.key_pressed = keyCode;
       this.modkey = mod_key;
@@ -1044,46 +1227,49 @@
  */
 use_arrow_key: function(keyCode, mod_key)
 {
-  var new_row;
+  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.uid, selected_row.expanded);
+
+    return false;
+  }
 
   if (new_row) {
     this.select_row(new_row.uid, mod_key, false);
     this.scrollto(new_row.uid);
   }
-
-  return false;
-},
-
-
-/**
- * Special handling method for +/- keys
- */
-use_plusminus_key: function(keyCode, mod_key)
-{
-  var selected_row = this.rows[this.last_selected];
-  if (!selected_row)
-    return;
-
-  if (keyCode == 32)
-    keyCode = selected_row.expanded ? 109 : 61;
-  if (keyCode == 61 || keyCode == 107)
-    if (mod_key == CONTROL_KEY || this.multiexpand)
-      this.expand_all(selected_row);
-    else
-     this.expand(selected_row);
-  else
-    if (mod_key == CONTROL_KEY || this.multiexpand)
-      this.collapse_all(selected_row);
-    else
-      this.collapse(selected_row);
-
-  this.update_expando(selected_row.uid, selected_row.expanded);
 
   return false;
 },
@@ -1096,7 +1282,8 @@
 {
   var row = this.rows[id].obj;
   if (row && this.frame) {
-    var scroll_to = Number(row.offsetTop);
+    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) {
@@ -1105,8 +1292,14 @@
       scroll_to = Number(row.offsetTop);
     }
 
-    if (scroll_to < Number(this.frame.scrollTop))
-      this.frame.scrollTop = scroll_to;
+    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);
   }
@@ -1120,7 +1313,7 @@
 {
   // convert touch event
   if (e.type == 'touchmove') {
-    if (e.changedTouches.length == 1)
+    if (e.touches.length == 1 && e.changedTouches.length == 1)
       e = rcube_event.touchevent(e.changedTouches[0]);
     else
       return rcube_event.cancel(e);
@@ -1128,61 +1321,71 @@
 
   if (this.drag_start) {
     // check mouse movement, of less than 3 pixels, don't start dragging
-    var m = rcube_event.get_mouse_pos(e);
+    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 })
+        .css({position: 'absolute', display: 'none', 'z-index': 2000})
         .appendTo(document.body);
+    else
+      this.draglayer.html('');
 
-    // also select childs of (collapsed) threads for dragging
-    var n, uid, selection = $.merge([], this.selection);
-    for (n in selection) {
-      uid = selection[n];
-      if (!this.rows[uid].expanded)
-        this.select_children(uid);
-    }
+    // get selected rows (in display order), don't use this.selection here
+    $(this.row_tagname() + '.selected', this.tbody).each(function() {
+      if (!String(this.id).match(self.id_regexp))
+        return;
 
-    // reset content
-    this.draglayer.html('');
+      var uid = RegExp.$1, row = self.rows[uid];
 
-    // get subjects of selected messages
-    var i, n, obj;
-    for (n=0; n<this.selection.length; n++) {
-      // only show 12 lines
-      if (n>12) {
-        this.draglayer.append('...');
-        break;
+      if ($.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;
       }
 
-      if (obj = this.rows[this.selection[n]].obj) {
-        for (i=0; i<obj.childNodes.length; i++) {
-          if (obj.childNodes[i].nodeName == 'TD') {
-            if (n == 0)
-              this.drag_start_pos = $(obj.childNodes[i]).offset();
+      $('> ' + self.col_tagname(), self.rows[uid].obj).each(function(n, cell) {
+        if (self.subject_col < 0 || (self.subject_col >= 0 && self.subject_col == n)) {
+          var subject = $(cell).text();
 
-            if (this.subject_col < 0 || (this.subject_col >= 0 && this.subject_col == i)) {
-              var subject = $(obj.childNodes[i]).text();
+          if (subject) {
+            // remove leading spaces
+            subject = $.trim(subject);
+            // truncate line to 50 characters
+            subject = (subject.length > 50 ? subject.substring(0, 50) + '...' : subject);
 
-              if (!subject)
-                break;
-
-              // remove leading spaces
-              subject = $.trim(subject);
-              // truncate line to 50 characters
-              subject = (subject.length > 50 ? subject.substring(0, 50) + '...' : subject);
-
-              var entry = $('<div>').text(subject);
-              this.draglayer.append(entry);
-              break;
-            }
+            self.draglayer.append($('<div>').text(subject));
+            return false;
           }
         }
-      }
-    }
+      });
+    });
 
     this.draglayer.show();
     this.drag_active = true;
@@ -1227,7 +1430,7 @@
   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.mobile) {
+  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'});
   }
@@ -1255,7 +1458,10 @@
 
     if (!this.col_draglayer) {
       var lpos = $(this.list).offset(),
-        cells = this.list.tHead.rows[0].cells;
+        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')
@@ -1367,7 +1573,7 @@
 
   while (row) {
     if (row.nodeType == 1) {
-      if ((r = this.rows[row.uid])) {
+      if (r = this.rows[row.uid]) {
         if (!r.depth || r.depth <= depth)
           break;
         res.push(r.uid);
@@ -1402,7 +1608,7 @@
  */
 del_dragfix: function()
 {
-  $('div.iframe-dragdrop-fix').each(function() { this.parentNode.removeChild(this); });
+  $('div.iframe-dragdrop-fix').remove();
 },
 
 
@@ -1411,7 +1617,11 @@
  */
 column_replace: function(from, to)
 {
-  var len, cells = this.list.tHead.rows[0].cells,
+  // 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');
@@ -1424,8 +1634,8 @@
   cells[0].parentNode.replaceChild(elem, td);
 
   // replace list cells
-  for (r=0, len=this.list.tBodies[0].rows.length; r<len; r++) {
-    row = this.list.tBodies[0].rows[r];
+  for (r=0, len=this.tbody.rows.length; r<len; r++) {
+    row = this.tbody.rows[r];
 
     elem = row.cells[from];
     before = row.cells[to];
@@ -1446,6 +1656,9 @@
   else if (this.subject_col > from && to >= this.subject_col)
     this.subject_col--;
 
+  if (this.fixed_header)
+    this.init_header();
+
   this.triggerEvent('column_replace');
 }
 

--
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