From 6f170902580c8cef342c0c65df1b98cbd293a79d Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Mon, 20 Jan 2014 04:18:22 -0500
Subject: [PATCH] Fix row UID handling in list widget

---
 program/js/list.js |  239 +++++++++++++++++++++++++++++++++--------------------------
 1 files changed, 135 insertions(+), 104 deletions(-)

diff --git a/program/js/list.js b/program/js/list.js
index 8677f02..c822aa4 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)
 {
@@ -32,10 +32,6 @@
   this.list = list ? list : null;
   this.tagname = this.list ? this.list.nodeName.toLowerCase() : 'table';
   this.id_regexp = /^rcmrow([a-z0-9\-_=\+\/]+)/i;
-  this.thead;
-  this.tbody;
-  this.fixed_header;
-  this.frame = null;
   this.rows = {};
   this.selection = [];
   this.rowcount = 0;
@@ -101,6 +97,8 @@
     if (this.keyboard)
       rcube_event.add_listener({event:'keydown', object:this, method:'key_press'});
   }
+
+  return this;
 },
 
 
@@ -109,11 +107,11 @@
  */
 init_row: function(row)
 {
+  row.uid = this.get_row_uid(row);
+
   // make references in internal array and set event handlers
-  if (row && String(row.id).match(this.id_regexp)) {
-    var self = this,
-      uid = RegExp.$1;
-    row.uid = uid;
+  if (row && row.uid) {
+    var self = this, uid = row.uid;
     this.rows[uid] = {uid:uid, id:row.id, obj:row};
 
     // set eventhandlers to table row
@@ -293,6 +291,7 @@
     if (row.id) domrow.id = row.id;
     if (row.className) domrow.className = row.className;
     if (row.style) $.extend(domrow.style, row.style);
+    if (row.uid) $(domrow).data('uid', row.uid);
 
     for (var domcell, col, i=0; row.cols && i < row.cols.length; i++) {
       col = row.cols[i];
@@ -380,6 +379,20 @@
       $(this.rows[id].obj).removeClass('selected focused').addClass('unfocused');
     }
   }
+},
+
+
+/**
+ * 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');
 },
 
 
@@ -577,7 +590,7 @@
     row.expanded = true;
     depth = row.depth;
     new_row = row.obj.nextSibling;
-    this.update_expando(row.uid, true);
+    this.update_expando(row.id, true);
     this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
   }
   else {
@@ -627,7 +640,7 @@
     row.expanded = false;
     depth = row.depth;
     new_row = row.obj.nextSibling;
-    this.update_expando(row.uid);
+    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 
@@ -649,7 +662,7 @@
           $(new_row).css('display', 'none');
         if (r.has_children && r.expanded) {
           r.expanded = false;
-          this.update_expando(r.uid, false);
+          this.update_expando(r.id, false);
           this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
         }
       }
@@ -671,7 +684,7 @@
     row.expanded = true;
     depth = row.depth;
     new_row = row.obj.nextSibling;
-    this.update_expando(row.uid, true);
+    this.update_expando(row.id, true);
     this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
   }
   else {
@@ -688,7 +701,7 @@
         $(new_row).css('display', '');
         if (r.has_children && !r.expanded) {
           r.expanded = true;
-          this.update_expando(r.uid, true);
+          this.update_expando(r.id, true);
           this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
         }
       }
@@ -702,13 +715,26 @@
 },
 
 
-update_expando: function(uid, expanded)
+update_expando: function(id, expanded)
 {
-  var expando = document.getElementById('rcmexpando' + uid);
+  var expando = document.getElementById('rcmexpando' + id);
   if (expando)
     expando.className = expanded ? 'expanded' : 'collapsed';
 },
 
+get_row_uid: function(row)
+{
+  if (row && row.uid)
+    return row.uid;
+
+  var uid;
+  if (row && (uid = $(row).data('uid')))
+    row.uid = uid;
+  else if (row && String(row.id).match(this.id_regexp))
+    row.uid = RegExp.$1;
+
+  return row.uid;
+},
 
 /**
  * get first/next/previous/last rows that are not hidden
@@ -744,11 +770,11 @@
 get_first_row: function()
 {
   if (this.rowcount) {
-    var i, len, rows = this.tbody.childNodes;
+    var i, len, uid, rows = this.tbody.childNodes;
 
     for (i=0, len=rows.length-1; i<len; i++)
-      if (rows[i].id && String(rows[i].id).match(this.id_regexp) && this.rows[RegExp.$1] != null)
-        return RegExp.$1;
+      if (rows[i].id && (uid = this.get_row_uid(rows[i])))
+        return uid;
   }
 
   return null;
@@ -757,11 +783,11 @@
 get_last_row: function()
 {
   if (this.rowcount) {
-    var i, rows = this.tbody.childNodes;
+    var i, uid, rows = this.tbody.childNodes;
 
     for (i=rows.length-1; i>=0; i--)
-      if (rows[i].id && String(rows[i].id).match(this.id_regexp) && this.rows[RegExp.$1] != null)
-        return RegExp.$1;
+      if (rows[i].id && (uid = this.get_row_uid(rows[i])))
+        return uid;
   }
 
   return null;
@@ -1067,7 +1093,7 @@
   if (deep !== false && res.length) {
     for (var uid, uids, i=0, len=res.length; i<len; i++) {
       uid = res[i];
-      if (this.rows[uid].has_children && !this.rows[uid].expanded) {
+      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];
@@ -1152,6 +1178,7 @@
 key_press: function(e)
 {
   var target = e.target || {};
+
   if (this.focused != true || target.nodeName == 'INPUT' || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')
     return true;
 
@@ -1173,11 +1200,9 @@
 
     case 37: // Left arrow key
     case 39: // Right arrow key
-    case 107: // Plus sign on a numeric keypad
-    case 109: // Minus sign on a numeric keypad
       // 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');
@@ -1222,55 +1247,49 @@
  */
 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.id, 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 || !selected_row.has_children)
-    return;
-
-  // expand
-  if (keyCode == 39 || keyCode == 107) {
-    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;
 },
@@ -1322,59 +1341,68 @@
 
   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() {
+      var uid = self.get_row_uid(this), row = self.rows[uid];
 
-    // reset content
-    this.draglayer.html('');
+      if (!uid || $.inArray(uid, selection) > -1)
+        return;
 
-    // get subjects of selected messages
-    var n, obj, me = this;
-    for (n=0; n<this.selection.length; n++) {
-      // only show 12 lines
-      if (n>12) {
-        this.draglayer.append('...');
-        break;
-      }
+      selection.push(uid);
 
-      if (obj = this.rows[this.selection[n]].obj) {
-        $('> '+this.col_tagname(), obj).each(function(i, elem) {
-          if (n == 0)
-            me.drag_start_pos = $(elem).offset();
-
-          if (me.subject_col < 0 || (me.subject_col >= 0 && me.subject_col == i)) {
-            var subject = $(elem).text();
-
-            if (subject) {
-              // 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);
-              me.draglayer.append(entry);
-            }
-
-            return false;  // break
-          }
+      // 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)) {
+          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;
@@ -1449,6 +1477,9 @@
       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,

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