Upgrade to ExtJS 3.2.0 - Released 03/30/2010

[extjs.git] / src / widgets / grid / GridView.js

diff --git a/src/widgets/grid/GridView.js b/src/widgets/grid/GridView.js
index a290de3..eabb487 100644 (file)
--- a/src/widgets/grid/GridView.js
+++ b/src/widgets/grid/GridView.js
@@ -1,6 +1,6 @@
 /*!
 /*!

- * Ext JS Library 3.0.0
- * Copyright(c) 2006-2009 Ext JS, LLC
+ * Ext JS Library 3.2.0
+ * Copyright(c) 2006-2010 Ext JS, Inc.

  * licensing@extjs.com
  * http://www.extjs.com/license
  */
  * licensing@extjs.com
  * http://www.extjs.com/license
  */


@@ -15,67 +15,7 @@
  * @constructor
  * @param {Object} config
  */
  * @constructor
  * @param {Object} config
  */

-Ext.grid.GridView = function(config){
-    Ext.apply(this, config);
-    // These events are only used internally by the grid components
-    this.addEvents(
-        /**
-         * @event beforerowremoved
-         * Internal UI Event. Fired before a row is removed.
-         * @param {Ext.grid.GridView} view
-         * @param {Number} rowIndex The index of the row to be removed.
-         * @param {Ext.data.Record} record The Record to be removed
-         */
-        "beforerowremoved",
-        /**
-         * @event beforerowsinserted
-         * Internal UI Event. Fired before rows are inserted.
-         * @param {Ext.grid.GridView} view
-         * @param {Number} firstRow The index of the first row to be inserted.
-         * @param {Number} lastRow The index of the last row to be inserted.
-         */
-        "beforerowsinserted",
-        /**
-         * @event beforerefresh
-         * Internal UI Event. Fired before the view is refreshed.
-         * @param {Ext.grid.GridView} view
-         */
-        "beforerefresh",
-        /**
-         * @event rowremoved
-         * Internal UI Event. Fired after a row is removed.
-         * @param {Ext.grid.GridView} view
-         * @param {Number} rowIndex The index of the row that was removed.
-         * @param {Ext.data.Record} record The Record that was removed
-         */
-        "rowremoved",
-        /**
-         * @event rowsinserted
-         * Internal UI Event. Fired after rows are inserted.
-         * @param {Ext.grid.GridView} view
-         * @param {Number} firstRow The index of the first inserted.
-         * @param {Number} lastRow The index of the last row inserted.
-         */
-        "rowsinserted",
-        /**
-         * @event rowupdated
-         * Internal UI Event. Fired after a row has been updated.
-         * @param {Ext.grid.GridView} view
-         * @param {Number} firstRow The index of the row updated.
-         * @param {Ext.data.record} record The Record backing the row updated.
-         */
-        "rowupdated",
-        /**
-         * @event refresh
-         * Internal UI Event. Fired after the GridView's body has been refreshed.
-         * @param {Ext.grid.GridView} view
-         */
-        "refresh"
-    );
-    Ext.grid.GridView.superclass.constructor.call(this);
-};
-
-Ext.extend(Ext.grid.GridView, Ext.util.Observable, {
+Ext.grid.GridView = Ext.extend(Ext.util.Observable, {

     /**
      * Override this function to apply custom CSS classes to rows during rendering.  You can also supply custom
      * parameters to the row template for the current row to customize how it is rendered using the <b>rowParams</b>
     /**
      * Override this function to apply custom CSS classes to rows during rendering.  You can also supply custom
      * parameters to the row template for the current row to customize how it is rendered using the <b>rowParams</b>


@@ -94,7 +34,7 @@ viewConfig: {
         }
         return 'x-grid3-row-collapsed';
     }
         }
         return 'x-grid3-row-collapsed';
     }

-},     
+},

     </code></pre>
      * @param {Record} record The {@link Ext.data.Record} corresponding to the current row.
      * @param {Number} index The row index.
     </code></pre>
      * @param {Record} record The {@link Ext.data.Record} corresponding to the current row.
      * @param {Number} index The row index.


@@ -115,10 +55,12 @@ viewConfig: {
      * @method getRowClass
      * @return {String} a CSS class name to add to the row.
      */
      * @method getRowClass
      * @return {String} a CSS class name to add to the row.
      */

+

     /**
      * @cfg {Boolean} enableRowBody True to add a second TR element per row that can be used to provide a row body
      * that spans beneath the data row.  Use the {@link #getRowClass} method's rowParams config to customize the row body.
      */
     /**
      * @cfg {Boolean} enableRowBody True to add a second TR element per row that can be used to provide a row body
      * that spans beneath the data row.  Use the {@link #getRowClass} method's rowParams config to customize the row body.
      */

+

     /**
      * @cfg {String} emptyText Default text (html tags are accepted) to display in the grid body when no rows
      * are available (defaults to ''). This value will be used to update the <tt>{@link #mainBody}</tt>:
     /**
      * @cfg {String} emptyText Default text (html tags are accepted) to display in the grid body when no rows
      * are available (defaults to ''). This value will be used to update the <tt>{@link #mainBody}</tt>:


@@ -126,8 +68,9 @@ viewConfig: {
     this.mainBody.update('&lt;div class="x-grid-empty">' + this.emptyText + '&lt;/div>');
     </code></pre>
      */
     this.mainBody.update('&lt;div class="x-grid-empty">' + this.emptyText + '&lt;/div>');
     </code></pre>
      */

+

     /**
     /**

-     * @cfg {Boolean} headersDisabled True to disable the grid column headers (defaults to <tt>false</tt>). 
+     * @cfg {Boolean} headersDisabled True to disable the grid column headers (defaults to <tt>false</tt>).

      * Use the {@link Ext.grid.ColumnModel ColumnModel} <tt>{@link Ext.grid.ColumnModel#menuDisabled menuDisabled}</tt>
      * config to disable the <i>menu</i> for individual columns.  While this config is true the
      * following will be disabled:<div class="mdetail-params"><ul>
      * Use the {@link Ext.grid.ColumnModel ColumnModel} <tt>{@link Ext.grid.ColumnModel#menuDisabled menuDisabled}</tt>
      * config to disable the <i>menu</i> for individual columns.  While this config is true the
      * following will be disabled:<div class="mdetail-params"><ul>


@@ -135,6 +78,7 @@ viewConfig: {
      * <li>the trigger to reveal the menu.</li>
      * </ul></div>
      */
      * <li>the trigger to reveal the menu.</li>
      * </ul></div>
      */

+

     /**
      * <p>A customized implementation of a {@link Ext.dd.DragZone DragZone} which provides default implementations
      * of the template methods of DragZone to enable dragging of the selected rows of a GridPanel.
     /**
      * <p>A customized implementation of a {@link Ext.dd.DragZone DragZone} which provides default implementations
      * of the template methods of DragZone to enable dragging of the selected rows of a GridPanel.


@@ -146,26 +90,31 @@ viewConfig: {
      * @property dragZone
      * @type {Ext.grid.GridDragZone}
      */
      * @property dragZone
      * @type {Ext.grid.GridDragZone}
      */

+

     /**
      * @cfg {Boolean} deferEmptyText True to defer <tt>{@link #emptyText}</tt> being applied until the store's
      * first load (defaults to <tt>true</tt>).
      */
     deferEmptyText : true,
     /**
      * @cfg {Boolean} deferEmptyText True to defer <tt>{@link #emptyText}</tt> being applied until the store's
      * first load (defaults to <tt>true</tt>).
      */
     deferEmptyText : true,

+

     /**
      * @cfg {Number} scrollOffset The amount of space to reserve for the vertical scrollbar
     /**
      * @cfg {Number} scrollOffset The amount of space to reserve for the vertical scrollbar

-     * (defaults to <tt>19</tt> pixels).
+     * (defaults to <tt>undefined</tt>). If an explicit value isn't specified, this will be automatically
+     * calculated.

      */
      */

-    scrollOffset : 19,
+    scrollOffset : undefined,
+

     /**
      * @cfg {Boolean} autoFill
      * Defaults to <tt>false</tt>.  Specify <tt>true</tt> to have the column widths re-proportioned
     /**
      * @cfg {Boolean} autoFill
      * Defaults to <tt>false</tt>.  Specify <tt>true</tt> to have the column widths re-proportioned

-     * when the grid is <b>initially rendered</b>.  The 
+     * when the grid is <b>initially rendered</b>.  The

      * {@link Ext.grid.Column#width initially configured width}</tt> of each column will be adjusted
      * to fit the grid width and prevent horizontal scrolling. If columns are later resized (manually
      * or programmatically), the other columns in the grid will <b>not</b> be resized to fit the grid width.
      * See <tt>{@link #forceFit}</tt> also.
      */
     autoFill : false,
      * {@link Ext.grid.Column#width initially configured width}</tt> of each column will be adjusted
      * to fit the grid width and prevent horizontal scrolling. If columns are later resized (manually
      * or programmatically), the other columns in the grid will <b>not</b> be resized to fit the grid width.
      * See <tt>{@link #forceFit}</tt> also.
      */
     autoFill : false,

+

     /**
      * @cfg {Boolean} forceFit
      * Defaults to <tt>false</tt>.  Specify <tt>true</tt> to have the column widths re-proportioned
     /**
      * @cfg {Boolean} forceFit
      * Defaults to <tt>false</tt>.  Specify <tt>true</tt> to have the column widths re-proportioned


@@ -175,25 +124,29 @@ viewConfig: {
      * to fit the grid width. See <tt>{@link #autoFill}</tt> also.
      */
     forceFit : false,
      * to fit the grid width. See <tt>{@link #autoFill}</tt> also.
      */
     forceFit : false,

+

     /**
     /**

-     * @cfg {Array} sortClasses The CSS classes applied to a header when it is sorted. (defaults to <tt>["sort-asc", "sort-desc"]</tt>)
+     * @cfg {Array} sortClasses The CSS classes applied to a header when it is sorted. (defaults to <tt>['sort-asc', 'sort-desc']</tt>)

      */
      */

-    sortClasses : ["sort-asc", "sort-desc"],
+    sortClasses : ['sort-asc', 'sort-desc'],
+

     /**
     /**

-     * @cfg {String} sortAscText The text displayed in the "Sort Ascending" menu item (defaults to <tt>"Sort Ascending"</tt>)
+     * @cfg {String} sortAscText The text displayed in the 'Sort Ascending' menu item (defaults to <tt>'Sort Ascending'</tt>)

      */
      */

-    sortAscText : "Sort Ascending",
+    sortAscText : 'Sort Ascending',
+

     /**
     /**

-     * @cfg {String} sortDescText The text displayed in the "Sort Descending" menu item (defaults to <tt>"Sort Descending"</tt>)
+     * @cfg {String} sortDescText The text displayed in the 'Sort Descending' menu item (defaults to <tt>'Sort Descending'</tt>)

      */
      */

-    sortDescText : "Sort Descending",
+    sortDescText : 'Sort Descending',
+

     /**
     /**

-     * @cfg {String} columnsText The text displayed in the "Columns" menu item (defaults to <tt>"Columns"</tt>)
+     * @cfg {String} columnsText The text displayed in the 'Columns' menu item (defaults to <tt>'Columns'</tt>)

      */
      */

-    columnsText : "Columns",
+    columnsText : 'Columns',

 
     /**
 
     /**

-     * @cfg {String} selectedRowClass The CSS class applied to a selected row (defaults to <tt>"x-grid3-row-selected"</tt>). An
+     * @cfg {String} selectedRowClass The CSS class applied to a selected row (defaults to <tt>'x-grid3-row-selected'</tt>). An

      * example overriding the default styling:
     <pre><code>
     .x-grid3-row-selected {background-color: yellow;}
      * example overriding the default styling:
     <pre><code>
     .x-grid3-row-selected {background-color: yellow;}


@@ -207,7 +160,7 @@ viewConfig: {
     </code></pre>
      * @type String
      */
     </code></pre>
      * @type String
      */

-    selectedRowClass : "x-grid3-row-selected",
+    selectedRowClass : 'x-grid3-row-selected',

 
     // private
     borderWidth : 2,
 
     // private
     borderWidth : 2,


@@ -224,6 +177,11 @@ viewConfig: {
      */
     rowSelectorDepth : 10,
 
      */
     rowSelectorDepth : 10,
 

+    /**
+     * @cfg {Number} rowBodySelectorDepth The number of levels to search for row bodies in event delegation (defaults to <tt>10</tt>)
+     */
+    rowBodySelectorDepth : 10,
+

     /**
      * @cfg {String} cellSelector The selector used to find cells internally (defaults to <tt>'td.x-grid3-cell'</tt>)
      */
     /**
      * @cfg {String} cellSelector The selector used to find cells internally (defaults to <tt>'td.x-grid3-cell'</tt>)
      */


@@ -232,12 +190,77 @@ viewConfig: {
      * @cfg {String} rowSelector The selector used to find rows internally (defaults to <tt>'div.x-grid3-row'</tt>)
      */
     rowSelector : 'div.x-grid3-row',
      * @cfg {String} rowSelector The selector used to find rows internally (defaults to <tt>'div.x-grid3-row'</tt>)
      */
     rowSelector : 'div.x-grid3-row',

-    
+
+    /**
+     * @cfg {String} rowBodySelector The selector used to find row bodies internally (defaults to <tt>'div.x-grid3-row'</tt>)
+     */
+    rowBodySelector : 'div.x-grid3-row-body',
+

     // private
     firstRowCls: 'x-grid3-row-first',
     lastRowCls: 'x-grid3-row-last',
     rowClsRe: /(?:^|\s+)x-grid3-row-(first|last|alt)(?:\s+|$)/g,
 
     // private
     firstRowCls: 'x-grid3-row-first',
     lastRowCls: 'x-grid3-row-last',
     rowClsRe: /(?:^|\s+)x-grid3-row-(first|last|alt)(?:\s+|$)/g,
 

+    constructor : function(config){
+        Ext.apply(this, config);
+        // These events are only used internally by the grid components
+        this.addEvents(
+            /**
+             * @event beforerowremoved
+             * Internal UI Event. Fired before a row is removed.
+             * @param {Ext.grid.GridView} view
+             * @param {Number} rowIndex The index of the row to be removed.
+             * @param {Ext.data.Record} record The Record to be removed
+             */
+            'beforerowremoved',
+            /**
+             * @event beforerowsinserted
+             * Internal UI Event. Fired before rows are inserted.
+             * @param {Ext.grid.GridView} view
+             * @param {Number} firstRow The index of the first row to be inserted.
+             * @param {Number} lastRow The index of the last row to be inserted.
+             */
+            'beforerowsinserted',
+            /**
+             * @event beforerefresh
+             * Internal UI Event. Fired before the view is refreshed.
+             * @param {Ext.grid.GridView} view
+             */
+            'beforerefresh',
+            /**
+             * @event rowremoved
+             * Internal UI Event. Fired after a row is removed.
+             * @param {Ext.grid.GridView} view
+             * @param {Number} rowIndex The index of the row that was removed.
+             * @param {Ext.data.Record} record The Record that was removed
+             */
+            'rowremoved',
+            /**
+             * @event rowsinserted
+             * Internal UI Event. Fired after rows are inserted.
+             * @param {Ext.grid.GridView} view
+             * @param {Number} firstRow The index of the first inserted.
+             * @param {Number} lastRow The index of the last row inserted.
+             */
+            'rowsinserted',
+            /**
+             * @event rowupdated
+             * Internal UI Event. Fired after a row has been updated.
+             * @param {Ext.grid.GridView} view
+             * @param {Number} firstRow The index of the row updated.
+             * @param {Ext.data.record} record The Record backing the row updated.
+             */
+            'rowupdated',
+            /**
+             * @event refresh
+             * Internal UI Event. Fired after the GridView's body has been refreshed.
+             * @param {Ext.grid.GridView} view
+             */
+            'refresh'
+        );
+        Ext.grid.GridView.superclass.constructor.call(this);
+    },
+

     /* -------------------------------- UI Specific ----------------------------- */
 
     // private
     /* -------------------------------- UI Specific ----------------------------- */
 
     // private


@@ -245,31 +268,31 @@ viewConfig: {
         var ts = this.templates || {};
         if(!ts.master){
             ts.master = new Ext.Template(
         var ts = this.templates || {};
         if(!ts.master){
             ts.master = new Ext.Template(

-                    '<div class="x-grid3" hidefocus="true">',
-                        '<div class="x-grid3-viewport">',
-                            '<div class="x-grid3-header"><div class="x-grid3-header-inner"><div class="x-grid3-header-offset" style="{ostyle}">{header}</div></div><div class="x-clear"></div></div>',
-                            '<div class="x-grid3-scroller"><div class="x-grid3-body" style="{bstyle}">{body}</div><a href="#" class="x-grid3-focus" tabIndex="-1"></a></div>',
-                        '</div>',
-                        '<div class="x-grid3-resize-marker">&#160;</div>',
-                        '<div class="x-grid3-resize-proxy">&#160;</div>',
-                    '</div>'
-                    );
+                '<div class="x-grid3" hidefocus="true">',
+                    '<div class="x-grid3-viewport">',
+                        '<div class="x-grid3-header"><div class="x-grid3-header-inner"><div class="x-grid3-header-offset" style="{ostyle}">{header}</div></div><div class="x-clear"></div></div>',
+                        '<div class="x-grid3-scroller"><div class="x-grid3-body" style="{bstyle}">{body}</div><a href="#" class="x-grid3-focus" tabIndex="-1"></a></div>',
+                    '</div>',
+                    '<div class="x-grid3-resize-marker">&#160;</div>',
+                    '<div class="x-grid3-resize-proxy">&#160;</div>',
+                '</div>'
+            );

         }
 
         if(!ts.header){
             ts.header = new Ext.Template(
         }
 
         if(!ts.header){
             ts.header = new Ext.Template(

-                    '<table border="0" cellspacing="0" cellpadding="0" style="{tstyle}">',
-                    '<thead><tr class="x-grid3-hd-row">{cells}</tr></thead>',
-                    '</table>'
-                    );
+                '<table border="0" cellspacing="0" cellpadding="0" style="{tstyle}">',
+                '<thead><tr class="x-grid3-hd-row">{cells}</tr></thead>',
+                '</table>'
+            );

         }
 
         if(!ts.hcell){
             ts.hcell = new Ext.Template(
         }
 
         if(!ts.hcell){
             ts.hcell = new Ext.Template(

-                    '<td class="x-grid3-hd x-grid3-cell x-grid3-td-{id} {css}" style="{style}"><div {tooltip} {attr} class="x-grid3-hd-inner x-grid3-hd-{id}" unselectable="on" style="{istyle}">', this.grid.enableHdMenu ? '<a class="x-grid3-hd-btn" href="#"></a>' : '',
-                    '{value}<img class="x-grid3-sort-icon" src="', Ext.BLANK_IMAGE_URL, '" />',
-                    '</div></td>'
-                    );
+                '<td class="x-grid3-hd x-grid3-cell x-grid3-td-{id} {css}" style="{style}"><div {tooltip} {attr} class="x-grid3-hd-inner x-grid3-hd-{id}" unselectable="on" style="{istyle}">', this.grid.enableHdMenu ? '<a class="x-grid3-hd-btn" href="#"></a>' : '',
+                '{value}<img class="x-grid3-sort-icon" src="', Ext.BLANK_IMAGE_URL, '" />',
+                '</div></td>'
+            );

         }
 
         if(!ts.body){
         }
 
         if(!ts.body){


@@ -278,11 +301,11 @@ viewConfig: {
 
         if(!ts.row){
             ts.row = new Ext.Template(
 
         if(!ts.row){
             ts.row = new Ext.Template(

-                    '<div class="x-grid3-row {alt}" style="{tstyle}"><table class="x-grid3-row-table" border="0" cellspacing="0" cellpadding="0" style="{tstyle}">',
-                    '<tbody><tr>{cells}</tr>',
-                    (this.enableRowBody ? '<tr class="x-grid3-row-body-tr" style="{bodyStyle}"><td colspan="{cols}" class="x-grid3-body-cell" tabIndex="0" hidefocus="on"><div class="x-grid3-row-body">{body}</div></td></tr>' : ''),
-                    '</tbody></table></div>'
-                    );
+                '<div class="x-grid3-row {alt}" style="{tstyle}"><table class="x-grid3-row-table" border="0" cellspacing="0" cellpadding="0" style="{tstyle}">',
+                '<tbody><tr>{cells}</tr>',
+                (this.enableRowBody ? '<tr class="x-grid3-row-body-tr" style="{bodyStyle}"><td colspan="{cols}" class="x-grid3-body-cell" tabIndex="0" hidefocus="on"><div class="x-grid3-row-body">{body}</div></td></tr>' : ''),
+                '</tbody></table></div>'
+            );

         }
 
         if(!ts.cell){
         }
 
         if(!ts.cell){


@@ -295,14 +318,14 @@ viewConfig: {
 
         for(var k in ts){
             var t = ts[k];
 
         for(var k in ts){
             var t = ts[k];

-            if(t && typeof t.compile == 'function' && !t.compiled){
+            if(t && Ext.isFunction(t.compile) && !t.compiled){

                 t.disableFormats = true;
                 t.compile();
             }
         }
 
         this.templates = ts;
                 t.disableFormats = true;
                 t.compile();
             }
         }
 
         this.templates = ts;

-        this.colRe = new RegExp("x-grid3-td-([^\\s]+)", "");
+        this.colRe = new RegExp('x-grid3-td-([^\\s]+)', '');

     },
 
     // private
     },
 
     // private


@@ -349,7 +372,7 @@ viewConfig: {
         this.mainBody = new E(this.scroller.dom.firstChild);
 
         this.focusEl = new E(this.scroller.dom.childNodes[1]);
         this.mainBody = new E(this.scroller.dom.firstChild);
 
         this.focusEl = new E(this.scroller.dom.childNodes[1]);

-        this.focusEl.swallowEvent("click", true);
+        this.focusEl.swallowEvent('click', true);

 
         this.resizeMarker = new E(cs[1]);
         this.resizeProxy = new E(cs[2]);
 
         this.resizeMarker = new E(cs[1]);
         this.resizeProxy = new E(cs[2]);


@@ -370,12 +393,12 @@ viewConfig: {
         return this.fly(el).findParent(this.cellSelector, this.cellSelectorDepth);
     },
 
         return this.fly(el).findParent(this.cellSelector, this.cellSelectorDepth);
     },
 

-/**
- * <p>Return the index of the grid column which contains the passed element.</p>
- * See also {@link #findRowIndex}
- * @param {Element} el The target element
- * @return The column index, or <b>false</b> if the target element is not within a row of this GridView.
- */
+    /**
+     * <p>Return the index of the grid column which contains the passed HTMLElement.</p>
+     * See also {@link #findRowIndex}
+     * @param {HTMLElement} el The target element
+     * @return {Number} The column index, or <b>false</b> if the target element is not within a row of this GridView.
+     */

     findCellIndex : function(el, requiredCls){
         var cell = this.findCell(el);
         if(cell && (!requiredCls || this.fly(cell).hasClass(requiredCls))){
     findCellIndex : function(el, requiredCls){
         var cell = this.findCell(el);
         if(cell && (!requiredCls || this.fly(cell).hasClass(requiredCls))){


@@ -406,11 +429,11 @@ viewConfig: {
         return this.findCellIndex(el, this.hdCls);
     },
 
         return this.findCellIndex(el, this.hdCls);
     },
 

-/**
- * Return the HtmlElement representing the grid row which contains the passed element.
- * @param {Element} el The target element
- * @return The row element, or null if the target element is not within a row of this GridView.
- */
+    /**
+     * Return the HtmlElement representing the grid row which contains the passed element.
+     * @param {HTMLElement} el The target HTMLElement
+     * @return {HTMLElement} The row element, or null if the target element is not within a row of this GridView.
+     */

     findRow : function(el){
         if(!el){
             return false;
     findRow : function(el){
         if(!el){
             return false;


@@ -418,45 +441,57 @@ viewConfig: {
         return this.fly(el).findParent(this.rowSelector, this.rowSelectorDepth);
     },
 
         return this.fly(el).findParent(this.rowSelector, this.rowSelectorDepth);
     },
 

-/**
- * <p>Return the index of the grid row which contains the passed element.</p>
- * See also {@link #findCellIndex}
- * @param {Element} el The target element
- * @return The row index, or <b>false</b> if the target element is not within a row of this GridView.
- */
+    /**
+     * <p>Return the index of the grid row which contains the passed HTMLElement.</p>
+     * See also {@link #findCellIndex}
+     * @param {HTMLElement} el The target HTMLElement
+     * @return {Number} The row index, or <b>false</b> if the target element is not within a row of this GridView.
+     */

     findRowIndex : function(el){
         var r = this.findRow(el);
         return r ? r.rowIndex : false;
     },
 
     findRowIndex : function(el){
         var r = this.findRow(el);
         return r ? r.rowIndex : false;
     },
 

+    /**
+     * Return the HtmlElement representing the grid row body which contains the passed element.
+     * @param {HTMLElement} el The target HTMLElement
+     * @return {HTMLElement} The row body element, or null if the target element is not within a row body of this GridView.
+     */
+    findRowBody : function(el){
+        if(!el){
+            return false;
+        }
+        return this.fly(el).findParent(this.rowBodySelector, this.rowBodySelectorDepth);
+    },
+

     // getter methods for fetching elements dynamically in the grid
 
     // getter methods for fetching elements dynamically in the grid
 

-/**
- * Return the <tt>&lt;div></tt> HtmlElement which represents a Grid row for the specified index.
- * @param {Number} index The row index
- * @return {HtmlElement} The div element.
- */
+    /**
+     * Return the <tt>&lt;div></tt> HtmlElement which represents a Grid row for the specified index.
+     * @param {Number} index The row index
+     * @return {HtmlElement} The div element.
+     */

     getRow : function(row){
         return this.getRows()[row];
     },
 
     getRow : function(row){
         return this.getRows()[row];
     },
 

-/**
- * Returns the grid's <tt>&lt;td></tt> HtmlElement at the specified coordinates.
- * @param {Number} row The row index in which to find the cell.
- * @param {Number} col The column index of the cell.
- * @return {HtmlElement} The td at the specified coordinates.
- */
+    /**
+     * Returns the grid's <tt>&lt;td></tt> HtmlElement at the specified coordinates.
+     * @param {Number} row The row index in which to find the cell.
+     * @param {Number} col The column index of the cell.
+     * @return {HtmlElement} The td at the specified coordinates.
+     */

     getCell : function(row, col){
         return this.getRow(row).getElementsByTagName('td')[col];
     },
 
     getCell : function(row, col){
         return this.getRow(row).getElementsByTagName('td')[col];
     },
 

-/**
- * Return the <tt>&lt;td></tt> HtmlElement which represents the Grid's header cell for the specified column index.
- * @param {Number} index The column index
- * @return {HtmlElement} The td element.
- */
+    /**
+     * Return the <tt>&lt;td></tt> HtmlElement which represents the Grid's header cell for the specified column index.
+     * @param {Number} index The column index
+     * @return {HtmlElement} The td element.
+     */

     getHeaderCell : function(index){
     getHeaderCell : function(index){

-      return this.mainHd.dom.getElementsByTagName('td')[index];
+        return this.mainHd.dom.getElementsByTagName('td')[index];

     },
 
     // manipulating elements
     },
 
     // manipulating elements


@@ -482,7 +517,7 @@ viewConfig: {
         Ext.removeNode(this.getRow(row));
         this.syncFocusEl(row);
     },
         Ext.removeNode(this.getRow(row));
         this.syncFocusEl(row);
     },

-    
+

     // private
     removeRows : function(firstRow, lastRow){
         var bd = this.mainBody.dom;
     // private
     removeRows : function(firstRow, lastRow){
         var bd = this.mainBody.dom;


@@ -517,9 +552,9 @@ viewConfig: {
 
     // private
     syncScroll : function(){
 
     // private
     syncScroll : function(){

-      this.syncHeaderScroll();
-      var mb = this.scroller.dom;
-        this.grid.fireEvent("bodyscroll", mb.scrollLeft, mb.scrollTop);
+        this.syncHeaderScroll();
+        var mb = this.scroller.dom;
+        this.grid.fireEvent('bodyscroll', mb.scrollLeft, mb.scrollTop);

     },
 
     // private
     },
 
     // private


@@ -533,22 +568,25 @@ viewConfig: {
     updateSortIcon : function(col, dir){
         var sc = this.sortClasses;
         var hds = this.mainHd.select('td').removeClass(sc);
     updateSortIcon : function(col, dir){
         var sc = this.sortClasses;
         var hds = this.mainHd.select('td').removeClass(sc);

-        hds.item(col).addClass(sc[dir == "DESC" ? 1 : 0]);
+        hds.item(col).addClass(sc[dir == 'DESC' ? 1 : 0]);

     },
 
     // private
     updateAllColumnWidths : function(){
     },
 
     // private
     updateAllColumnWidths : function(){

-        var tw = this.getTotalWidth(),
+        var tw   = this.getTotalWidth(),

             clen = this.cm.getColumnCount(),
             clen = this.cm.getColumnCount(),

-            ws = [],
+            ws   = [],

             len,
             i;
             len,
             i;

+

         for(i = 0; i < clen; i++){
             ws[i] = this.getColumnWidth(i);
         }
         for(i = 0; i < clen; i++){
             ws[i] = this.getColumnWidth(i);
         }

+

         this.innerHd.firstChild.style.width = this.getOffsetWidth();
         this.innerHd.firstChild.firstChild.style.width = tw;
         this.mainBody.dom.style.width = tw;
         this.innerHd.firstChild.style.width = this.getOffsetWidth();
         this.innerHd.firstChild.firstChild.style.width = tw;
         this.mainBody.dom.style.width = tw;

+

         for(i = 0; i < clen; i++){
             var hd = this.getHeaderCell(i);
             hd.style.width = ws[i];
         for(i = 0; i < clen; i++){
             var hd = this.getHeaderCell(i);
             hd.style.width = ws[i];


@@ -619,67 +657,120 @@ viewConfig: {
         this.layout();
     },
 
         this.layout();
     },
 

-    // private
-    doRender : function(cs, rs, ds, startRow, colCount, stripe){
-        var ts = this.templates, ct = ts.cell, rt = ts.row, last = colCount-1;
-        var tstyle = 'width:'+this.getTotalWidth()+';';
+    /**
+     * @private
+     * Renders all of the rows to a string buffer and returns the string. This is called internally
+     * by renderRows and performs the actual string building for the rows - it does not inject HTML into the DOM.
+     * @param {Array} columns The column data acquired from getColumnData.
+     * @param {Array} records The array of records to render
+     * @param {Ext.data.Store} store The store to render the rows from
+     * @param {Number} startRow The index of the first row being rendered. Sometimes we only render a subset of
+     * the rows so this is used to maintain logic for striping etc
+     * @param {Number} colCount The total number of columns in the column model
+     * @param {Boolean} stripe True to stripe the rows
+     * @return {String} A string containing the HTML for the rendered rows
+     */
+    doRender : function(columns, records, store, startRow, colCount, stripe) {
+        var templates    = this.templates,
+            cellTemplate = templates.cell,
+            rowTemplate  = templates.row,
+            last         = colCount - 1;
+
+        var tstyle = 'width:' + this.getTotalWidth() + ';';
+

         // buffers
         // buffers

-        var buf = [], cb, c, p = {}, rp = {tstyle: tstyle}, r;
-        for(var j = 0, len = rs.length; j < len; j++){
-            r = rs[j]; cb = [];
-            var rowIndex = (j+startRow);
-            for(var i = 0; i < colCount; i++){
-                c = cs[i];
-                p.id = c.id;
-                p.css = i === 0 ? 'x-grid3-cell-first ' : (i == last ? 'x-grid3-cell-last ' : '');
-                p.attr = p.cellAttr = "";
-                p.value = c.renderer(r.data[c.name], p, r, rowIndex, i, ds);
-                p.style = c.style;
-                if(Ext.isEmpty(p.value)){
-                    p.value = "&#160;";
+        var rowBuffer = [],
+            colBuffer = [],
+            rowParams = {tstyle: tstyle},
+            meta      = {},
+            column,
+            record;
+
+        //build up each row's HTML
+        for (var j = 0, len = records.length; j < len; j++) {
+            record    = records[j];
+            colBuffer = [];
+
+            var rowIndex = j + startRow;
+
+            //build up each column's HTML
+            for (var i = 0; i < colCount; i++) {
+                column = columns[i];
+
+                meta.id    = column.id;
+                meta.css   = i === 0 ? 'x-grid3-cell-first ' : (i == last ? 'x-grid3-cell-last ' : '');
+                meta.attr  = meta.cellAttr = '';
+                meta.style = column.style;
+                meta.value = column.renderer.call(column.scope, record.data[column.name], meta, record, rowIndex, i, store);
+
+                if (Ext.isEmpty(meta.value)) {
+                    meta.value = '&#160;';

                 }
                 }

-                if(this.markDirty && r.dirty && typeof r.modified[c.name] !== 'undefined'){
-                    p.css += ' x-grid3-dirty-cell';
+
+                if (this.markDirty && record.dirty && Ext.isDefined(record.modified[column.name])) {
+                    meta.css += ' x-grid3-dirty-cell';

                 }
                 }

-                cb[cb.length] = ct.apply(p);
+
+                colBuffer[colBuffer.length] = cellTemplate.apply(meta);

             }
             }

+
+            //set up row striping and row dirtiness CSS classes

             var alt = [];
             var alt = [];

-            if(stripe && ((rowIndex+1) % 2 === 0)){
-                alt[0] = "x-grid3-row-alt";
+
+            if (stripe && ((rowIndex + 1) % 2 === 0)) {
+                alt[0] = 'x-grid3-row-alt';

             }
             }

-            if(r.dirty){
-                alt[1] = " x-grid3-dirty-row";
+
+            if (record.dirty) {
+                alt[1] = ' x-grid3-dirty-row';

             }
             }

-            rp.cols = colCount;
-            if(this.getRowClass){
-                alt[2] = this.getRowClass(r, rowIndex, rp, ds);
+
+            rowParams.cols = colCount;
+
+            if (this.getRowClass) {
+                alt[2] = this.getRowClass(record, rowIndex, rowParams, store);

             }
             }

-            rp.alt = alt.join(" ");
-            rp.cells = cb.join("");
-            buf[buf.length] =  rt.apply(rp);
+
+            rowParams.alt   = alt.join(' ');
+            rowParams.cells = colBuffer.join('');
+
+            rowBuffer[rowBuffer.length] = rowTemplate.apply(rowParams);

         }
         }

-        return buf.join("");
+
+        return rowBuffer.join('');

     },
 
     // private
     },
 
     // private

-    processRows : function(startRow, skipStripe){
-        if(!this.ds || this.ds.getCount() < 1){
+    processRows : function(startRow, skipStripe) {
+        if (!this.ds || this.ds.getCount() < 1) {

             return;
         }
             return;
         }

-        var rows = this.getRows();
+
+        var rows = this.getRows(),
+            len  = rows.length,
+            i, r;
+

         skipStripe = skipStripe || !this.grid.stripeRows;
         skipStripe = skipStripe || !this.grid.stripeRows;

-        startRow = startRow || 0;
-        Ext.each(rows, function(row, idx){
-            row.rowIndex = idx;
-            row.className = row.className.replace(this.rowClsRe, ' ');
-            if (!skipStripe && (idx + 1) % 2 === 0) {
-                row.className += ' x-grid3-row-alt';
+        startRow   = startRow   || 0;
+
+        for (i = 0; i<len; i++) {
+            r = rows[i];
+            if (r) {
+                r.rowIndex = i;
+                if (!skipStripe) {
+                    r.className = r.className.replace(this.rowClsRe, ' ');
+                    if ((i + 1) % 2 === 0){
+                        r.className += ' x-grid3-row-alt';
+                    }
+                }

             }
             }

-        });
+        }
+

         // add first/last-row classes
         // add first/last-row classes

-        if(startRow === 0){
+        if (startRow === 0) {

             Ext.fly(rows[0]).addClass(this.firstRowCls);
         }
             Ext.fly(rows[0]).addClass(this.firstRowCls);
         }

+

         Ext.fly(rows[rows.length - 1]).addClass(this.lastRowCls);
     },
 
         Ext.fly(rows[rows.length - 1]).addClass(this.lastRowCls);
     },
 


@@ -693,20 +784,25 @@ viewConfig: {
         if(this.deferEmptyText !== true){
             this.applyEmptyText();
         }
         if(this.deferEmptyText !== true){
             this.applyEmptyText();
         }

+        this.grid.fireEvent('viewready', this.grid);

     },
 
     },
 

-    // private
-    renderUI : function(){
-
-        var header = this.renderHeaders();
-        var body = this.templates.body.apply({rows:'&#160;'});
-
+    /**
+     * @private
+     * Renders each of the UI elements in turn. This is called internally, once, by this.render. It does not
+     * render rows from the store, just the surrounding UI elements. It also sets up listeners on the UI elements
+     * and sets up options like column menus, moving and resizing.
+     */
+    renderUI : function() {
+        var templates = this.templates,
+            header    = this.renderHeaders(),
+            body      = templates.body.apply({rows:'&#160;'});

 
 

-        var html = this.templates.master.apply({
-            body: body,
+        var html = templates.master.apply({
+            body  : body,

             header: header,
             header: header,

-            ostyle: 'width:'+this.getOffsetWidth()+';',
-            bstyle: 'width:'+this.getTotalWidth()+';'
+            ostyle: 'width:' + this.getOffsetWidth() + ';',
+            bstyle: 'width:' + this.getTotalWidth()  + ';'

         });
 
         var g = this.grid;
         });
 
         var g = this.grid;


@@ -716,68 +812,99 @@ viewConfig: {
         this.initElements();
 
         // get mousedowns early
         this.initElements();
 
         // get mousedowns early

-        Ext.fly(this.innerHd).on("click", this.handleHdDown, this);
+        Ext.fly(this.innerHd).on('click', this.handleHdDown, this);
+

         this.mainHd.on({
         this.mainHd.on({

-            scope: this,
+            scope    : this,

             mouseover: this.handleHdOver,
             mouseover: this.handleHdOver,

-            mouseout: this.handleHdOut,
+            mouseout : this.handleHdOut,

             mousemove: this.handleHdMove
         });
 
         this.scroller.on('scroll', this.syncScroll,  this);
             mousemove: this.handleHdMove
         });
 
         this.scroller.on('scroll', this.syncScroll,  this);

-        if(g.enableColumnResize !== false){
+        if (g.enableColumnResize !== false) {

             this.splitZone = new Ext.grid.GridView.SplitDragZone(g, this.mainHd.dom);
         }
 
             this.splitZone = new Ext.grid.GridView.SplitDragZone(g, this.mainHd.dom);
         }
 

-        if(g.enableColumnMove){
+        if (g.enableColumnMove) {

             this.columnDrag = new Ext.grid.GridView.ColumnDragZone(g, this.innerHd);
             this.columnDrop = new Ext.grid.HeaderDropZone(g, this.mainHd.dom);
         }
 
             this.columnDrag = new Ext.grid.GridView.ColumnDragZone(g, this.innerHd);
             this.columnDrop = new Ext.grid.HeaderDropZone(g, this.mainHd.dom);
         }
 

-        if(g.enableHdMenu !== false){
-            this.hmenu = new Ext.menu.Menu({id: g.id + "-hctx"});
+        if (g.enableHdMenu !== false) {
+            this.hmenu = new Ext.menu.Menu({id: g.id + '-hctx'});

             this.hmenu.add(
             this.hmenu.add(

-                {itemId:"asc", text: this.sortAscText, cls: "xg-hmenu-sort-asc"},
-                {itemId:"desc", text: this.sortDescText, cls: "xg-hmenu-sort-desc"}
+                {itemId:'asc',  text: this.sortAscText,  cls: 'xg-hmenu-sort-asc'},
+                {itemId:'desc', text: this.sortDescText, cls: 'xg-hmenu-sort-desc'}

             );
             );

-            if(g.enableColumnHide !== false){
-                this.colMenu = new Ext.menu.Menu({id:g.id + "-hcols-menu"});
+
+            if (g.enableColumnHide !== false) {
+                this.colMenu = new Ext.menu.Menu({id:g.id + '-hcols-menu'});

                 this.colMenu.on({
                 this.colMenu.on({

-                    scope: this,
+                    scope     : this,

                     beforeshow: this.beforeColMenuShow,
                     beforeshow: this.beforeColMenuShow,

-                    itemclick: this.handleHdMenuClick
+                    itemclick : this.handleHdMenuClick

                 });
                 this.hmenu.add('-', {
                 });
                 this.hmenu.add('-', {

-                    itemId:"columns",
+                    itemId:'columns',

                     hideOnClick: false,
                     text: this.columnsText,
                     menu: this.colMenu,
                     iconCls: 'x-cols-icon'
                 });
             }
                     hideOnClick: false,
                     text: this.columnsText,
                     menu: this.colMenu,
                     iconCls: 'x-cols-icon'
                 });
             }

-            this.hmenu.on("itemclick", this.handleHdMenuClick, this);
+
+            this.hmenu.on('itemclick', this.handleHdMenuClick, this);

         }
 
         }
 

-        if(g.trackMouseOver){
+        if (g.trackMouseOver) {

             this.mainBody.on({
             this.mainBody.on({

-                scope: this,
+                scope    : this,

                 mouseover: this.onRowOver,
                 mouseover: this.onRowOver,

-                mouseout: this.onRowOut
+                mouseout : this.onRowOut

             });
         }
 
             });
         }
 

-        if(g.enableDragDrop || g.enableDrag){
+        if (g.enableDragDrop || g.enableDrag) {

             this.dragZone = new Ext.grid.GridDragZone(g, {
                 ddGroup : g.ddGroup || 'GridDD'
             });
         }
 
         this.updateHeaderSortState();
             this.dragZone = new Ext.grid.GridDragZone(g, {
                 ddGroup : g.ddGroup || 'GridDD'
             });
         }
 
         this.updateHeaderSortState();

+    },

 
 

+    // private
+    processEvent : function(name, e) {
+        var t = e.getTarget(),
+            g = this.grid,
+            header = this.findHeaderIndex(t);
+        g.fireEvent(name, e);
+        if (header !== false) {
+            g.fireEvent('header' + name, g, header, e);
+        } else {
+            var row = this.findRowIndex(t),
+                cell,
+                body;
+            if (row !== false) {
+                g.fireEvent('row' + name, g, row, e);
+                cell = this.findCellIndex(t);
+                if (cell !== false) {
+                    g.fireEvent('cell' + name, g, row, cell, e);
+                } else {
+                    body = this.findRowBody(t);
+                    if (body) {
+                        g.fireEvent('rowbody' + name, g, row, e);
+                    }
+                }
+            } else {
+                g.fireEvent('container' + name, g, e);
+            }
+        }

     },
 
     // private
     },
 
     // private

-    layout : function(){
+    layout : function() {

         if(!this.mainBody){
             return; // not rendered
         }
         if(!this.mainBody){
             return; // not rendered
         }


@@ -789,7 +916,7 @@ viewConfig: {
         if(!g.hideHeaders && (vw < 20 || csize.height < 20)){ // display: none?
             return;
         }
         if(!g.hideHeaders && (vw < 20 || csize.height < 20)){ // display: none?
             return;
         }

-        
+

         if(g.autoHeight){
             this.scroller.dom.style.overflow = 'visible';
             if(Ext.isWebKit){
         if(g.autoHeight){
             this.scroller.dom.style.overflow = 'visible';
             if(Ext.isWebKit){


@@ -858,36 +985,46 @@ viewConfig: {
     getColumnId : function(index){
       return this.cm.getColumnId(index);
     },
     getColumnId : function(index){
       return this.cm.getColumnId(index);
     },

-    
-    // private 
+
+    // private

     getOffsetWidth : function() {
     getOffsetWidth : function() {

-        return (this.cm.getTotalWidth() + this.scrollOffset) + 'px';
+        return (this.cm.getTotalWidth() + this.getScrollOffset()) + 'px';

     },
 
     },
 

-    // private
-    renderHeaders : function(){
-        var cm = this.cm, 
-            ts = this.templates,
-            ct = ts.hcell,
-            cb = [], 
-            p = {},
-            len = cm.getColumnCount(),
+    getScrollOffset: function(){
+        return Ext.num(this.scrollOffset, Ext.getScrollBarWidth());
+    },
+
+    /**
+     * @private
+     * Renders the header row using the 'header' template. Does not inject the HTML into the DOM, just
+     * returns a string.
+     * @return {String} Rendered header row
+     */
+    renderHeaders : function() {
+        var cm   = this.cm,
+            ts   = this.templates,
+            ct   = ts.hcell,
+            cb   = [],
+            p    = {},
+            len  = cm.getColumnCount(),

             last = len - 1;
             last = len - 1;

-            
-        for(var i = 0; i < len; i++){
+
+        for (var i = 0; i < len; i++) {

             p.id = cm.getColumnId(i);
             p.id = cm.getColumnId(i);

-            p.value = cm.getColumnHeader(i) || "";
+            p.value = cm.getColumnHeader(i) || '';

             p.style = this.getColumnStyle(i, true);
             p.tooltip = this.getColumnTooltip(i);
             p.css = i === 0 ? 'x-grid3-cell-first ' : (i == last ? 'x-grid3-cell-last ' : '');
             p.style = this.getColumnStyle(i, true);
             p.tooltip = this.getColumnTooltip(i);
             p.css = i === 0 ? 'x-grid3-cell-first ' : (i == last ? 'x-grid3-cell-last ' : '');

-            if(cm.config[i].align == 'right'){
+
+            if (cm.config[i].align == 'right') {

                 p.istyle = 'padding-right:16px';
             } else {
                 delete p.istyle;
             }
             cb[cb.length] = ct.apply(p);
         }
                 p.istyle = 'padding-right:16px';
             } else {
                 delete p.istyle;
             }
             cb[cb.length] = ct.apply(p);
         }

-        return ts.header.apply({cells: cb.join(""), tstyle:'width:'+this.getTotalWidth()+';'});
+        return ts.header.apply({cells: cb.join(''), tstyle:'width:'+this.getTotalWidth()+';'});

     },
 
     // private
     },
 
     // private


@@ -900,7 +1037,7 @@ viewConfig: {
                 return 'title="'+tt+'"';
             }
         }
                 return 'title="'+tt+'"';
             }
         }

-        return "";
+        return '';

     },
 
     // private
     },
 
     // private


@@ -938,7 +1075,7 @@ viewConfig: {
     },
 
     resolveCell : function(row, col, hscroll){
     },
 
     resolveCell : function(row, col, hscroll){

-        if(typeof row != "number"){
+        if(!Ext.isNumber(row)){

             row = row.rowIndex;
         }
         if(!this.ds){
             row = row.rowIndex;
         }
         if(!this.ds){


@@ -975,6 +1112,9 @@ viewConfig: {
         var xy = row;
         if(!Ext.isArray(xy)){
             row = Math.min(row, Math.max(0, this.getRows().length-1));
         var xy = row;
         if(!Ext.isArray(xy)){
             row = Math.min(row, Math.max(0, this.getRows().length-1));

+            if (isNaN(row)) {
+                return;
+            }

             xy = this.getResolvedXY(this.resolveCell(row, col, hscroll));
         }
         this.focusEl.setXY(xy||this.scroller.getXY());
             xy = this.getResolvedXY(this.resolveCell(row, col, hscroll));
         }
         this.focusEl.setXY(xy||this.scroller.getXY());


@@ -986,25 +1126,25 @@ viewConfig: {
             return;
         }
 
             return;
         }
 

-        var rowEl = resolved.row, 
+        var rowEl = resolved.row,

             cellEl = resolved.cell,
             c = this.scroller.dom,
             ctop = 0,
             cellEl = resolved.cell,
             c = this.scroller.dom,
             ctop = 0,

-            p = rowEl, 
+            p = rowEl,

             stop = this.el.dom;
             stop = this.el.dom;

-            
+

         while(p && p != stop){
             ctop += p.offsetTop;
             p = p.offsetParent;
         }
         while(p && p != stop){
             ctop += p.offsetTop;
             p = p.offsetParent;
         }

+

         ctop -= this.mainHd.dom.offsetHeight;
         ctop -= this.mainHd.dom.offsetHeight;

+        stop = parseInt(c.scrollTop, 10);

 
         var cbot = ctop + rowEl.offsetHeight,
             ch = c.clientHeight,
             sbot = stop + ch;
 
         var cbot = ctop + rowEl.offsetHeight,
             ch = c.clientHeight,
             sbot = stop + ch;

-            
-        stop = parseInt(c.scrollTop, 10);
-        
+

 
         if(ctop < stop){
           c.scrollTop = ctop;
 
         if(ctop < stop){
           c.scrollTop = ctop;


@@ -1028,32 +1168,34 @@ viewConfig: {
     },
 
     // private
     },
 
     // private

-    insertRows : function(dm, firstRow, lastRow, isUpdate){
+    insertRows : function(dm, firstRow, lastRow, isUpdate) {

         var last = dm.getCount() - 1;
         var last = dm.getCount() - 1;

-        if(!isUpdate && firstRow === 0 && lastRow >= last){
-            this.refresh();
-        }else{
-            if(!isUpdate){
-                this.fireEvent("beforerowsinserted", this, firstRow, lastRow);
+        if( !isUpdate && firstRow === 0 && lastRow >= last) {
+            this.fireEvent('beforerowsinserted', this, firstRow, lastRow);
+                this.refresh();
+            this.fireEvent('rowsinserted', this, firstRow, lastRow);
+        } else {
+            if (!isUpdate) {
+                this.fireEvent('beforerowsinserted', this, firstRow, lastRow);

             }
             var html = this.renderRows(firstRow, lastRow),
                 before = this.getRow(firstRow);
             }
             var html = this.renderRows(firstRow, lastRow),
                 before = this.getRow(firstRow);

-            if(before){
+            if (before) {

                 if(firstRow === 0){
                     Ext.fly(this.getRow(0)).removeClass(this.firstRowCls);
                 }
                 Ext.DomHelper.insertHtml('beforeBegin', before, html);
                 if(firstRow === 0){
                     Ext.fly(this.getRow(0)).removeClass(this.firstRowCls);
                 }
                 Ext.DomHelper.insertHtml('beforeBegin', before, html);

-            }else{
+            } else {

                 var r = this.getRow(last - 1);
                 if(r){
                     Ext.fly(r).removeClass(this.lastRowCls);
                 }
                 Ext.DomHelper.insertHtml('beforeEnd', this.mainBody.dom, html);
             }
                 var r = this.getRow(last - 1);
                 if(r){
                     Ext.fly(r).removeClass(this.lastRowCls);
                 }
                 Ext.DomHelper.insertHtml('beforeEnd', this.mainBody.dom, html);
             }

-            if(!isUpdate){
-                this.fireEvent("rowsinserted", this, firstRow, lastRow);
+            if (!isUpdate) {
+                this.fireEvent('rowsinserted', this, firstRow, lastRow);

                 this.processRows(firstRow);
                 this.processRows(firstRow);

-            }else if(firstRow === 0 || firstRow >= last){
+            } else if (firstRow === 0 || firstRow >= last) {

                 //ensure first/last row is kept after an update.
                 Ext.fly(this.getRow(firstRow)).addClass(firstRow === 0 ? this.firstRowCls : this.lastRowCls);
             }
                 //ensure first/last row is kept after an update.
                 Ext.fly(this.getRow(firstRow)).addClass(firstRow === 0 ? this.firstRowCls : this.lastRowCls);
             }


@@ -1066,12 +1208,12 @@ viewConfig: {
         if(dm.getRowCount()<1){
             this.refresh();
         }else{
         if(dm.getRowCount()<1){
             this.refresh();
         }else{

-            this.fireEvent("beforerowsdeleted", this, firstRow, lastRow);
+            this.fireEvent('beforerowsdeleted', this, firstRow, lastRow);

 
             this.removeRows(firstRow, lastRow);
 
             this.processRows(firstRow);
 
             this.removeRows(firstRow, lastRow);
 
             this.processRows(firstRow);

-            this.fireEvent("rowsdeleted", this, firstRow, lastRow);
+            this.fireEvent('rowsdeleted', this, firstRow, lastRow);

         }
     },
 
         }
     },
 


@@ -1092,8 +1234,8 @@ viewConfig: {
     // private
     getColumnWidth : function(col){
         var w = this.cm.getColumnWidth(col);
     // private
     getColumnWidth : function(col){
         var w = this.cm.getColumnWidth(col);

-        if(typeof w == 'number'){
-            return (Ext.isBorderBox ? w : (w-this.borderWidth > 0 ? w-this.borderWidth:0)) + 'px';
+        if(Ext.isNumber(w)){
+            return (Ext.isBorderBox || (Ext.isWebKit && !Ext.isSafari2) ? w : (w - this.borderWidth > 0 ? w - this.borderWidth : 0)) + 'px';

         }
         return w;
     },
         }
         return w;
     },


@@ -1107,7 +1249,7 @@ viewConfig: {
     fitColumns : function(preventRefresh, onlyExpand, omitColumn){
         var cm = this.cm, i;
         var tw = cm.getTotalWidth(false);
     fitColumns : function(preventRefresh, onlyExpand, omitColumn){
         var cm = this.cm, i;
         var tw = cm.getTotalWidth(false);

-        var aw = this.grid.getGridEl().getWidth(true)-this.scrollOffset;
+        var aw = this.grid.getGridEl().getWidth(true)-this.getScrollOffset();

 
         if(aw < 20){ // not initialized, so don't screw up the default widths
             return;
 
         if(aw < 20){ // not initialized, so don't screw up the default widths
             return;


@@ -1119,7 +1261,7 @@ viewConfig: {
         }
 
         var vc = cm.getColumnCount(true);
         }
 
         var vc = cm.getColumnCount(true);

-        var ac = vc-(typeof omitColumn == 'number' ? 1 : 0);
+        var ac = vc-(Ext.isNumber(omitColumn) ? 1 : 0);

         if(ac === 0){
             ac = 1;
             omitColumn = undefined;
         if(ac === 0){
             ac = 1;
             omitColumn = undefined;


@@ -1164,7 +1306,7 @@ viewConfig: {
         var g = this.grid, cm = this.cm;
         if(!this.userResized && g.autoExpandColumn){
             var tw = cm.getTotalWidth(false);
         var g = this.grid, cm = this.cm;
         if(!this.userResized && g.autoExpandColumn){
             var tw = cm.getTotalWidth(false);

-            var aw = this.grid.getGridEl().getWidth(true)-this.scrollOffset;
+            var aw = this.grid.getGridEl().getWidth(true)-this.getScrollOffset();

             if(tw != aw){
                 var ci = cm.getIndexById(g.autoExpandColumn);
                 var currentWidth = cm.getColumnWidth(ci);
             if(tw != aw){
                 var ci = cm.getIndexById(g.autoExpandColumn);
                 var currentWidth = cm.getColumnWidth(ci);


@@ -1179,19 +1321,29 @@ viewConfig: {
         }
     },
 
         }
     },
 

-    // private
+    /**
+     * @private
+     * Returns an array of column configurations - one for each column
+     * @return {Array} Array of column config objects. This includes the column name, renderer, id style and renderer
+     */

     getColumnData : function(){
         // build a map for all the columns
     getColumnData : function(){
         // build a map for all the columns

-        var cs = [], cm = this.cm, colCount = cm.getColumnCount();
-        for(var i = 0; i < colCount; i++){
+        var cs       = [],
+            cm       = this.cm,
+            colCount = cm.getColumnCount();
+
+        for (var i = 0; i < colCount; i++) {

             var name = cm.getDataIndex(i);
             var name = cm.getDataIndex(i);

+

             cs[i] = {
             cs[i] = {

-                name : (typeof name == 'undefined' ? this.ds.fields.get(i).name : name),
-                renderer : cm.getRenderer(i),
-                id : cm.getColumnId(i),
-                style : this.getColumnStyle(i)
+                name    : (!Ext.isDefined(name) ? this.ds.fields.get(i).name : name),
+                renderer: cm.getRenderer(i),
+                scope   : cm.getRendererScope(i),
+                id      : cm.getColumnId(i),
+                style   : this.getColumnStyle(i)

             };
         }
             };
         }

+

         return cs;
     },
 
         return cs;
     },
 


@@ -1202,13 +1354,13 @@ viewConfig: {
         var colCount = cm.getColumnCount();
 
         if(ds.getCount() < 1){
         var colCount = cm.getColumnCount();
 
         if(ds.getCount() < 1){

-            return "";
+            return '';

         }
 
         var cs = this.getColumnData();
 
         startRow = startRow || 0;
         }
 
         var cs = this.getColumnData();
 
         startRow = startRow || 0;

-        endRow = typeof endRow == "undefined"? ds.getCount()-1 : endRow;
+        endRow = !Ext.isDefined(endRow) ? ds.getCount()-1 : endRow;

 
         // records to render
         var rs = ds.getRange(startRow, endRow);
 
         // records to render
         var rs = ds.getRange(startRow, endRow);


@@ -1225,7 +1377,7 @@ viewConfig: {
     // private
     refreshRow : function(record){
         var ds = this.ds, index;
     // private
     refreshRow : function(record){
         var ds = this.ds, index;

-        if(typeof record == 'number'){
+        if(Ext.isNumber(record)){

             index = record;
             record = ds.getAt(index);
             if(!record){
             index = record;
             record = ds.getAt(index);
             if(!record){


@@ -1240,7 +1392,7 @@ viewConfig: {
         this.insertRows(ds, index, index, true);
         this.getRow(index).rowIndex = index;
         this.onRemove(ds, record, index+1, true);
         this.insertRows(ds, index, index, true);
         this.getRow(index).rowIndex = index;
         this.onRemove(ds, record, index+1, true);

-        this.fireEvent("rowupdated", this, index, record);
+        this.fireEvent('rowupdated', this, index, record);

     },
 
     /**
     },
 
     /**


@@ -1248,7 +1400,7 @@ viewConfig: {
      * @param {Boolean} headersToo (optional) True to also refresh the headers
      */
     refresh : function(headersToo){
      * @param {Boolean} headersToo (optional) True to also refresh the headers
      */
     refresh : function(headersToo){

-        this.fireEvent("beforerefresh", this);
+        this.fireEvent('beforerefresh', this);

         this.grid.stopEditing(true);
 
         var result = this.renderBody();
         this.grid.stopEditing(true);
 
         var result = this.renderBody();


@@ -1260,35 +1412,61 @@ viewConfig: {
         this.processRows(0, true);
         this.layout();
         this.applyEmptyText();
         this.processRows(0, true);
         this.layout();
         this.applyEmptyText();

-        this.fireEvent("refresh", this);
+        this.fireEvent('refresh', this);

     },
 
     },
 

-    // private
+    /**
+     * @private
+     * Displays the configured emptyText if there are currently no rows to display
+     */

     applyEmptyText : function(){
         if(this.emptyText && !this.hasRows()){
             this.mainBody.update('<div class="x-grid-empty">' + this.emptyText + '</div>');
         }
     },
 
     applyEmptyText : function(){
         if(this.emptyText && !this.hasRows()){
             this.mainBody.update('<div class="x-grid-empty">' + this.emptyText + '</div>');
         }
     },
 

-    // private
+    /**
+     * @private
+     * Adds sorting classes to the column headers based on the bound store's sortInfo. Fires the 'sortchange' event
+     * if the sorting has changed since this function was last run.
+     */

     updateHeaderSortState : function(){
         var state = this.ds.getSortState();
     updateHeaderSortState : function(){
         var state = this.ds.getSortState();

-        if(!state){
+        if (!state) {

             return;
         }
             return;
         }

-        if(!this.sortState || (this.sortState.field != state.field || this.sortState.direction != state.direction)){
+
+        if (!this.sortState || (this.sortState.field != state.field || this.sortState.direction != state.direction)) {

             this.grid.fireEvent('sortchange', this.grid, state);
         }
             this.grid.fireEvent('sortchange', this.grid, state);
         }

+

         this.sortState = state;
         this.sortState = state;

+

         var sortColumn = this.cm.findColumnIndex(state.field);
         var sortColumn = this.cm.findColumnIndex(state.field);

-        if(sortColumn != -1){
+        if (sortColumn != -1){

             var sortDir = state.direction;
             this.updateSortIcon(sortColumn, sortDir);
         }
     },
 
             var sortDir = state.direction;
             this.updateSortIcon(sortColumn, sortDir);
         }
     },
 

+    /**
+     * @private
+     * Removes any sorting indicator classes from the column headers
+     */
+    clearHeaderSortState : function(){
+        if (!this.sortState) {
+            return;
+        }
+        this.grid.fireEvent('sortchange', this.grid, null);
+        this.mainHd.select('td').removeClass(this.sortClasses);
+        delete this.sortState;
+    },
+

     // private
     destroy : function(){
     // private
     destroy : function(){

+        if (this.scrollToTopTask && this.scrollToTopTask.cancel){
+            this.scrollToTopTask.cancel();
+        }

         if(this.colMenu){
             Ext.menu.MenuMgr.unregister(this.colMenu);
             this.colMenu.destroy();
         if(this.colMenu){
             Ext.menu.MenuMgr.unregister(this.colMenu);
             this.colMenu.destroy();


@@ -1299,41 +1477,75 @@ viewConfig: {
             this.hmenu.destroy();
             delete this.hmenu;
         }
             this.hmenu.destroy();
             delete this.hmenu;
         }

+
+        this.initData(null, null);
+        this.purgeListeners();
+        Ext.fly(this.innerHd).un("click", this.handleHdDown, this);
+

         if(this.grid.enableColumnMove){
         if(this.grid.enableColumnMove){

-            var dds = Ext.dd.DDM.ids['gridHeader' + this.grid.getGridEl().id];
-            if(dds){
-                for(var dd in dds){
-                    if(!dds[dd].config.isTarget && dds[dd].dragElId){
-                        var elid = dds[dd].dragElId;
-                        dds[dd].unreg();
-                        Ext.get(elid).remove();
-                    } else if(dds[dd].config.isTarget){
-                        dds[dd].proxyTop.remove();
-                        dds[dd].proxyBottom.remove();
-                        dds[dd].unreg();
-                    }
-                    if(Ext.dd.DDM.locationCache[dd]){
-                        delete Ext.dd.DDM.locationCache[dd];
-                    }
-                }
-                delete Ext.dd.DDM.ids['gridHeader' + this.grid.getGridEl().id];
+            Ext.destroy(
+                this.columnDrag.el,
+                this.columnDrag.proxy.ghost,
+                this.columnDrag.proxy.el,
+                this.columnDrop.el,
+                this.columnDrop.proxyTop,
+                this.columnDrop.proxyBottom,
+                this.columnDrag.dragData.ddel,
+                this.columnDrag.dragData.header
+            );
+            if (this.columnDrag.proxy.anim) {
+                Ext.destroy(this.columnDrag.proxy.anim);

             }
             }

+            delete this.columnDrag.proxy.ghost;
+            delete this.columnDrag.dragData.ddel;
+            delete this.columnDrag.dragData.header;
+            this.columnDrag.destroy();
+            delete Ext.dd.DDM.locationCache[this.columnDrag.id];
+            delete this.columnDrag._domRef;
+
+            delete this.columnDrop.proxyTop;
+            delete this.columnDrop.proxyBottom;
+            this.columnDrop.destroy();
+            delete Ext.dd.DDM.locationCache["gridHeader" + this.grid.getGridEl().id];
+            delete this.columnDrop._domRef;
+            delete Ext.dd.DDM.ids[this.columnDrop.ddGroup];

         }
 
         }
 

-        if(this.dragZone){
-            this.dragZone.unreg();
+        if (this.splitZone){ // enableColumnResize
+            this.splitZone.destroy();
+            delete this.splitZone._domRef;
+            delete Ext.dd.DDM.ids["gridSplitters" + this.grid.getGridEl().id];

         }
         }

-        
+

         Ext.fly(this.innerHd).removeAllListeners();
         Ext.removeNode(this.innerHd);
         Ext.fly(this.innerHd).removeAllListeners();
         Ext.removeNode(this.innerHd);

-        
-        Ext.destroy(this.resizeMarker, this.resizeProxy, this.focusEl, this.mainBody, 
-                    this.scroller, this.mainHd, this.mainWrap, this.dragZone, 
-                    this.splitZone, this.columnDrag, this.columnDrop);
+        delete this.innerHd;
+
+        Ext.destroy(
+            this.el,
+            this.mainWrap,
+            this.mainHd,
+            this.scroller,
+            this.mainBody,
+            this.focusEl,
+            this.resizeMarker,
+            this.resizeProxy,
+            this.activeHdBtn,
+            this.dragZone,
+            this.splitZone,
+            this._flyweight
+        );
+
+        delete this.grid.container;
+
+        if(this.dragZone){
+            this.dragZone.destroy();
+        }
+
+        Ext.dd.DDM.currentTarget = null;
+        delete Ext.dd.DDM.locationCache[this.grid.getGridEl().id];

 
 

-        this.initData(null, null);

         Ext.EventManager.removeResizeListener(this.onWindowResize, this);
         Ext.EventManager.removeResizeListener(this.onWindowResize, this);

-        this.purgeListeners();

     },
 
     // private
     },
 
     // private


@@ -1346,12 +1558,12 @@ viewConfig: {
         if(this.autoFill){
             var ct = this.grid.ownerCt;
             if (ct && ct.getLayout()){
         if(this.autoFill){
             var ct = this.grid.ownerCt;
             if (ct && ct.getLayout()){

-                ct.on('afterlayout', function(){ 
+                ct.on('afterlayout', function(){

                     this.fitColumns(true, true);
                     this.fitColumns(true, true);

-                    this.updateHeaders(); 
-                }, this, {single: true}); 
-            }else{ 
-                this.fitColumns(true, true); 
+                    this.updateHeaders();
+                }, this, {single: true});
+            }else{
+                this.fitColumns(true, true);

             }
         }else if(this.forceFit){
             this.fitColumns(true, false);
             }
         }else if(this.forceFit){
             this.fitColumns(true, false);


@@ -1366,12 +1578,12 @@ viewConfig: {
     // private
     initData : function(ds, cm){
         if(this.ds){
     // private
     initData : function(ds, cm){
         if(this.ds){

-            this.ds.un("load", this.onLoad, this);
-            this.ds.un("datachanged", this.onDataChange, this);
-            this.ds.un("add", this.onAdd, this);
-            this.ds.un("remove", this.onRemove, this);
-            this.ds.un("update", this.onUpdate, this);
-            this.ds.un("clear", this.onClear, this);
+            this.ds.un('load', this.onLoad, this);
+            this.ds.un('datachanged', this.onDataChange, this);
+            this.ds.un('add', this.onAdd, this);
+            this.ds.un('remove', this.onRemove, this);
+            this.ds.un('update', this.onUpdate, this);
+            this.ds.un('clear', this.onClear, this);

             if(this.ds !== ds && this.ds.autoDestroy){
                 this.ds.destroy();
             }
             if(this.ds !== ds && this.ds.autoDestroy){
                 this.ds.destroy();
             }


@@ -1390,11 +1602,11 @@ viewConfig: {
         this.ds = ds;
 
         if(this.cm){
         this.ds = ds;
 
         if(this.cm){

-            this.cm.un("configchange", this.onColConfigChange, this);
-            this.cm.un("widthchange", this.onColWidthChange, this);
-            this.cm.un("headerchange", this.onHeaderChange, this);
-            this.cm.un("hiddenchange", this.onHiddenChange, this);
-            this.cm.un("columnmoved", this.onColumnMove, this);
+            this.cm.un('configchange', this.onColConfigChange, this);
+            this.cm.un('widthchange', this.onColWidthChange, this);
+            this.cm.un('headerchange', this.onHeaderChange, this);
+            this.cm.un('hiddenchange', this.onHiddenChange, this);
+            this.cm.un('columnmoved', this.onColumnMove, this);

         }
         if(cm){
             delete this.lastViewWidth;
         }
         if(cm){
             delete this.lastViewWidth;


@@ -1436,19 +1648,26 @@ viewConfig: {
     // private
     onRemove : function(ds, record, index, isUpdate){
         if(isUpdate !== true){
     // private
     onRemove : function(ds, record, index, isUpdate){
         if(isUpdate !== true){

-            this.fireEvent("beforerowremoved", this, index, record);
+            this.fireEvent('beforerowremoved', this, index, record);

         }
         this.removeRow(index);
         if(isUpdate !== true){
             this.processRows(index);
             this.applyEmptyText();
         }
         this.removeRow(index);
         if(isUpdate !== true){
             this.processRows(index);
             this.applyEmptyText();

-            this.fireEvent("rowremoved", this, index, record);
+            this.fireEvent('rowremoved', this, index, record);

         }
     },
 
     // private
     onLoad : function(){
         }
     },
 
     // private
     onLoad : function(){

-        this.scrollToTop();
+        if (Ext.isGecko){
+            if (!this.scrollToTopTask) {
+                this.scrollToTopTask = new Ext.util.DelayedTask(this.scrollToTop, this);
+            }
+            this.scrollToTopTask.delay(1);
+        }else{
+            this.scrollToTop();
+        }

     },
 
     // private
     },
 
     // private


@@ -1486,7 +1705,7 @@ viewConfig: {
     /* -------------------- UI Events and Handlers ------------------------------ */
     // private
     initUI : function(grid){
     /* -------------------- UI Events and Handlers ------------------------------ */
     // private
     initUI : function(grid){

-        grid.on("headerclick", this.onHeaderClick, this);
+        grid.on('headerclick', this.onHeaderClick, this);

     },
 
     // private
     },
 
     // private


@@ -1506,7 +1725,7 @@ viewConfig: {
     onRowOver : function(e, t){
         var row;
         if((row = this.findRowIndex(t)) !== false){
     onRowOver : function(e, t){
         var row;
         if((row = this.findRowIndex(t)) !== false){

-            this.addRowClass(row, "x-grid3-row-over");
+            this.addRowClass(row, 'x-grid3-row-over');

         }
     },
 
         }
     },
 


@@ -1514,7 +1733,7 @@ viewConfig: {
     onRowOut : function(e, t){
         var row;
         if((row = this.findRowIndex(t)) !== false && !e.within(this.getRow(row), true)){
     onRowOut : function(e, t){
         var row;
         if((row = this.findRowIndex(t)) !== false && !e.within(this.getRow(row), true)){

-            this.removeRowClass(row, "x-grid3-row-over");
+            this.removeRowClass(row, 'x-grid3-row-over');

         }
     },
 
         }
     },
 


@@ -1537,7 +1756,7 @@ viewConfig: {
     onCellSelect : function(row, col){
         var cell = this.getCell(row, col);
         if(cell){
     onCellSelect : function(row, col){
         var cell = this.getCell(row, col);
         if(cell){

-            this.fly(cell).addClass("x-grid3-cell-selected");
+            this.fly(cell).addClass('x-grid3-cell-selected');

         }
     },
 
         }
     },
 


@@ -1545,7 +1764,7 @@ viewConfig: {
     onCellDeselect : function(row, col){
         var cell = this.getCell(row, col);
         if(cell){
     onCellDeselect : function(row, col){
         var cell = this.getCell(row, col);
         if(cell){

-            this.fly(cell).removeClass("x-grid3-cell-selected");
+            this.fly(cell).removeClass('x-grid3-cell-selected');

         }
     },
 
         }
     },
 


@@ -1563,22 +1782,24 @@ viewConfig: {
             this.syncHeaderScroll();
         }
 
             this.syncHeaderScroll();
         }
 

-        this.grid.fireEvent("columnresize", i, w);
+        this.grid.fireEvent('columnresize', i, w);

     },
 
     // private
     handleHdMenuClick : function(item){
     },
 
     // private
     handleHdMenuClick : function(item){

-        var index = this.hdCtxIndex;
-        var cm = this.cm, ds = this.ds;
-        switch(item.itemId){
-            case "asc":
-                ds.sort(cm.getDataIndex(index), "ASC");
+        var index = this.hdCtxIndex,
+            cm = this.cm,
+            ds = this.ds,
+            id = item.getItemId();
+        switch(id){
+            case 'asc':
+                ds.sort(cm.getDataIndex(index), 'ASC');

                 break;
                 break;

-            case "desc":
-                ds.sort(cm.getDataIndex(index), "DESC");
+            case 'desc':
+                ds.sort(cm.getDataIndex(index), 'DESC');

                 break;
             default:
                 break;
             default:

-                index = cm.getIndexById(item.itemId.substr(4));
+                index = cm.getIndexById(id.substr(4));

                 if(index != -1){
                     if(item.checked && cm.getColumnsBy(this.isHideableColumn, this).length <= 1){
                         this.onDenyColumnHide();
                 if(index != -1){
                     if(item.checked && cm.getColumnsBy(this.isHideableColumn, this).length <= 1){
                         this.onDenyColumnHide();


@@ -1592,7 +1813,7 @@ viewConfig: {
 
     // private
     isHideableColumn : function(c){
 
     // private
     isHideableColumn : function(c){

-        return !c.hidden && !c.fixed;
+        return !c.hidden;

     },
 
     // private
     },
 
     // private


@@ -1600,9 +1821,9 @@ viewConfig: {
         var cm = this.cm,  colCount = cm.getColumnCount();
         this.colMenu.removeAll();
         for(var i = 0; i < colCount; i++){
         var cm = this.cm,  colCount = cm.getColumnCount();
         this.colMenu.removeAll();
         for(var i = 0; i < colCount; i++){

-            if(cm.config[i].fixed !== true && cm.config[i].hideable !== false){
+            if(cm.config[i].hideable !== false){

                 this.colMenu.add(new Ext.menu.CheckItem({
                 this.colMenu.add(new Ext.menu.CheckItem({

-                    itemId: "col-"+cm.getColumnId(i),
+                    itemId: 'col-'+cm.getColumnId(i),

                     text: cm.getColumnHeader(i),
                     checked: !cm.isHidden(i),
                     hideOnClick:false,
                     text: cm.getColumnHeader(i),
                     checked: !cm.isHidden(i),
                     hideOnClick:false,


@@ -1621,12 +1842,12 @@ viewConfig: {
             var index = this.getCellIndex(hd);
             this.hdCtxIndex = index;
             var ms = this.hmenu.items, cm = this.cm;
             var index = this.getCellIndex(hd);
             this.hdCtxIndex = index;
             var ms = this.hmenu.items, cm = this.cm;

-            ms.get("asc").setDisabled(!cm.isSortable(index));
-            ms.get("desc").setDisabled(!cm.isSortable(index));
-            this.hmenu.on("hide", function(){
+            ms.get('asc').setDisabled(!cm.isSortable(index));
+            ms.get('desc').setDisabled(!cm.isSortable(index));
+            this.hmenu.on('hide', function(){

                 Ext.fly(hd).removeClass('x-grid3-hd-menu-open');
             }, this, {single:true});
                 Ext.fly(hd).removeClass('x-grid3-hd-menu-open');
             }, this, {single:true});

-            this.hmenu.show(t, "tl-bl?");
+            this.hmenu.show(t, 'tl-bl?');

         }
     },
 
         }
     },
 


@@ -1634,12 +1855,12 @@ viewConfig: {
     handleHdOver : function(e, t){
         var hd = this.findHeaderCell(t);
         if(hd && !this.headersDisabled){
     handleHdOver : function(e, t){
         var hd = this.findHeaderCell(t);
         if(hd && !this.headersDisabled){

-            this.activeHd = hd;
+            this.activeHdRef = t;

             this.activeHdIndex = this.getCellIndex(hd);
             var fly = this.fly(hd);
             this.activeHdRegion = fly.getRegion();
             if(!this.cm.isMenuDisabled(this.activeHdIndex)){
             this.activeHdIndex = this.getCellIndex(hd);
             var fly = this.fly(hd);
             this.activeHdRegion = fly.getRegion();
             if(!this.cm.isMenuDisabled(this.activeHdIndex)){

-                fly.addClass("x-grid3-hd-over");
+                fly.addClass('x-grid3-hd-over');

                 this.activeHdBtn = fly.child('.x-grid3-hd-btn');
                 if(this.activeHdBtn){
                     this.activeHdBtn.dom.style.height = (hd.firstChild.offsetHeight-1)+'px';
                 this.activeHdBtn = fly.child('.x-grid3-hd-btn');
                 if(this.activeHdBtn){
                     this.activeHdBtn.dom.style.height = (hd.firstChild.offsetHeight-1)+'px';


@@ -1650,18 +1871,21 @@ viewConfig: {
 
     // private
     handleHdMove : function(e, t){
 
     // private
     handleHdMove : function(e, t){

-        if(this.activeHd && !this.headersDisabled){
-            var hw = this.splitHandleWidth || 5;
-            var r = this.activeHdRegion;
-            var x = e.getPageX();
-            var ss = this.activeHd.style;
-            if(x - r.left <= hw && this.cm.isResizable(this.activeHdIndex-1)){
-                ss.cursor = Ext.isAir ? 'move' : Ext.isWebKit ? 'e-resize' : 'col-resize'; // col-resize not always supported
-            }else if(r.right - x <= (!this.activeHdBtn ? hw : 2) && this.cm.isResizable(this.activeHdIndex)){
-                ss.cursor = Ext.isAir ? 'move' : Ext.isWebKit ? 'w-resize' : 'col-resize';
-            }else{
-                ss.cursor = '';
+        var hd = this.findHeaderCell(this.activeHdRef);
+        if(hd && !this.headersDisabled){
+            var hw = this.splitHandleWidth || 5,
+                r = this.activeHdRegion,
+                x = e.getPageX(),
+                ss = hd.style,
+                cur = '';
+            if(this.grid.enableColumnResize !== false){
+                if(x - r.left <= hw && this.cm.isResizable(this.activeHdIndex-1)){
+                    cur = Ext.isAir ? 'move' : Ext.isWebKit ? 'e-resize' : 'col-resize'; // col-resize not always supported
+                }else if(r.right - x <= (!this.activeHdBtn ? hw : 2) && this.cm.isResizable(this.activeHdIndex)){
+                    cur = Ext.isAir ? 'move' : Ext.isWebKit ? 'w-resize' : 'col-resize';
+                }

             }
             }

+            ss.cursor = cur;

         }
     },
 
         }
     },
 


@@ -1669,8 +1893,8 @@ viewConfig: {
     handleHdOut : function(e, t){
         var hd = this.findHeaderCell(t);
         if(hd && (!Ext.isIE || !e.within(hd, true))){
     handleHdOut : function(e, t){
         var hd = this.findHeaderCell(t);
         if(hd && (!Ext.isIE || !e.within(hd, true))){

-            this.activeHd = null;
-            this.fly(hd).removeClass("x-grid3-hd-over");
+            this.activeHdRef = null;
+            this.fly(hd).removeClass('x-grid3-hd-over');

             hd.style.cursor = '';
         }
     },
             hd.style.cursor = '';
         }
     },


@@ -1690,29 +1914,31 @@ viewConfig: {
 
 // private
 // This is a support class used internally by the Grid components
 
 // private
 // This is a support class used internally by the Grid components

-Ext.grid.GridView.SplitDragZone = function(grid, hd){
-    this.grid = grid;
-    this.view = grid.getView();
-    this.marker = this.view.resizeMarker;
-    this.proxy = this.view.resizeProxy;
-    Ext.grid.GridView.SplitDragZone.superclass.constructor.call(this, hd,
-        "gridSplitters" + this.grid.getGridEl().id, {
-        dragElId : Ext.id(this.proxy.dom), resizeFrame:false
-    });
-    this.scroll = false;
-    this.hw = this.view.splitHandleWidth || 5;
-};
-Ext.extend(Ext.grid.GridView.SplitDragZone, Ext.dd.DDProxy, {
+Ext.grid.GridView.SplitDragZone = Ext.extend(Ext.dd.DDProxy, {
+    
+    constructor: function(grid, hd){
+        this.grid = grid;
+        this.view = grid.getView();
+        this.marker = this.view.resizeMarker;
+        this.proxy = this.view.resizeProxy;
+        Ext.grid.GridView.SplitDragZone.superclass.constructor.call(this, hd,
+            'gridSplitters' + this.grid.getGridEl().id, {
+            dragElId : Ext.id(this.proxy.dom), resizeFrame:false
+        });
+        this.scroll = false;
+        this.hw = this.view.splitHandleWidth || 5;
+    },

 
     b4StartDrag : function(x, y){
 
     b4StartDrag : function(x, y){

+        this.dragHeadersDisabled = this.view.headersDisabled;

         this.view.headersDisabled = true;
         var h = this.view.mainWrap.getHeight();
         this.marker.setHeight(h);
         this.marker.show();
         this.marker.alignTo(this.view.getHeaderCell(this.cellIndex), 'tl-tl', [-2, 0]);
         this.proxy.setHeight(h);
         this.view.headersDisabled = true;
         var h = this.view.mainWrap.getHeight();
         this.marker.setHeight(h);
         this.marker.show();
         this.marker.alignTo(this.view.getHeaderCell(this.cellIndex), 'tl-tl', [-2, 0]);
         this.proxy.setHeight(h);

-        var w = this.cm.getColumnWidth(this.cellIndex);
-        var minw = Math.max(w-this.grid.minColumnWidth, 0);
+        var w = this.cm.getColumnWidth(this.cellIndex),
+            minw = Math.max(w-this.grid.minColumnWidth, 0);

         this.resetConstraints();
         this.setXConstraint(minw, 1000);
         this.setYConstraint(0, 0);
         this.resetConstraints();
         this.setXConstraint(minw, 1000);
         this.setYConstraint(0, 0);


@@ -1722,13 +1948,19 @@ Ext.extend(Ext.grid.GridView.SplitDragZone, Ext.dd.DDProxy, {
         Ext.dd.DDProxy.prototype.b4StartDrag.call(this, x, y);
     },
 
         Ext.dd.DDProxy.prototype.b4StartDrag.call(this, x, y);
     },
 

+    allowHeaderDrag : function(e){
+        return true;
+    },

 
     handleMouseDown : function(e){
         var t = this.view.findHeaderCell(e.getTarget());
 
     handleMouseDown : function(e){
         var t = this.view.findHeaderCell(e.getTarget());

-        if(t){
-            var xy = this.view.fly(t).getXY(), x = xy[0], y = xy[1];
-            var exy = e.getXY(), ex = exy[0];
-            var w = t.offsetWidth, adjust = false;
+        if(t && this.allowHeaderDrag(e)){
+            var xy = this.view.fly(t).getXY(), 
+                x = xy[0], 
+                y = xy[1];
+                exy = e.getXY(), ex = exy[0],
+                w = t.offsetWidth, adjust = false;
+                

             if((ex - x) <= this.hw){
                 adjust = -1;
             }else if((x+w) - ex <= this.hw){
             if((ex - x) <= this.hw){
                 adjust = -1;
             }else if((x+w) - ex <= this.hw){


@@ -1761,12 +1993,14 @@ Ext.extend(Ext.grid.GridView.SplitDragZone, Ext.dd.DDProxy, {
 
     endDrag : function(e){
         this.marker.hide();
 
     endDrag : function(e){
         this.marker.hide();

-        var v = this.view;
-        var endX = Math.max(this.minX, e.getPageX());
-        var diff = endX - this.startPos;
+        var v = this.view,
+            endX = Math.max(this.minX, e.getPageX()),
+            diff = endX - this.startPos,
+            disabled = this.dragHeadersDisabled;
+            

         v.onColumnSplitterMoved(this.cellIndex, this.cm.getColumnWidth(this.cellIndex)+diff);
         setTimeout(function(){
         v.onColumnSplitterMoved(this.cellIndex, this.cm.getColumnWidth(this.cellIndex)+diff);
         setTimeout(function(){

-            v.headersDisabled = false;
+            v.headersDisabled = disabled;

         }, 50);
     },
 
         }, 50);
     },