Upgrade to ExtJS 3.0.0 - Released 07/06/2009
[extjs.git] / docs / source / MultiSelect.html
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+<html>\r
+<head>\r
+  <title>The source code</title>\r
+    <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />\r
+    <script type="text/javascript" src="../resources/prettify/prettify.js"></script>\r
+</head>\r
+<body  onload="prettyPrint();">\r
+    <pre class="prettyprint lang-js">Ext.ns('Ext.ux.form');\r
+\r
+<div id="cls-Ext.ux.form.MultiSelect"></div>/**\r
+ * @class Ext.ux.form.MultiSelect\r
+ * @extends Ext.form.Field\r
+ * A control that allows selection and form submission of multiple list items.\r
+ *\r
+ *  @history\r
+ *    2008-06-19 bpm Original code contributed by Toby Stuart (with contributions from Robert Williams)\r
+ *    2008-06-19 bpm Docs and demo code clean up\r
+ *\r
+ * @constructor\r
+ * Create a new MultiSelect\r
+ * @param {Object} config Configuration options\r
+ * @xtype multiselect \r
+ */\r
+Ext.ux.form.MultiSelect = Ext.extend(Ext.form.Field,  {\r
+    <div id="cfg-Ext.ux.form.MultiSelect-legend"></div>/**\r
+     * @cfg {String} legend Wraps the object with a fieldset and specified legend.\r
+     */\r
+    <div id="cfg-Ext.ux.form.MultiSelect-view"></div>/**\r
+     * @cfg {Ext.ListView} view The {@link Ext.ListView} used to render the multiselect list.\r
+     */\r
+    <div id="cfg-Ext.ux.form.MultiSelect-dragGroup"></div>/**\r
+     * @cfg {String/Array} dragGroup The ddgroup name(s) for the MultiSelect DragZone (defaults to undefined).\r
+     */\r
+    <div id="cfg-Ext.ux.form.MultiSelect-dropGroup"></div>/**\r
+     * @cfg {String/Array} dropGroup The ddgroup name(s) for the MultiSelect DropZone (defaults to undefined).\r
+     */\r
+    <div id="cfg-Ext.ux.form.MultiSelect-ddReorder"></div>/**\r
+     * @cfg {Boolean} ddReorder Whether the items in the MultiSelect list are drag/drop reorderable (defaults to false).\r
+     */\r
+    ddReorder:false,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-tbar"></div>/**\r
+     * @cfg {Object/Array} tbar The top toolbar of the control. This can be a {@link Ext.Toolbar} object, a\r
+     * toolbar config, or an array of buttons/button configs to be added to the toolbar.\r
+     */\r
+    <div id="cfg-Ext.ux.form.MultiSelect-appendOnly"></div>/**\r
+     * @cfg {String} appendOnly True if the list should only allow append drops when drag/drop is enabled\r
+     * (use for lists which are sorted, defaults to false).\r
+     */\r
+    appendOnly:false,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-width"></div>/**\r
+     * @cfg {Number} width Width in pixels of the control (defaults to 100).\r
+     */\r
+    width:100,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-height"></div>/**\r
+     * @cfg {Number} height Height in pixels of the control (defaults to 100).\r
+     */\r
+    height:100,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-displayField"></div>/**\r
+     * @cfg {String/Number} displayField Name/Index of the desired display field in the dataset (defaults to 0).\r
+     */\r
+    displayField:0,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-valueField"></div>/**\r
+     * @cfg {String/Number} valueField Name/Index of the desired value field in the dataset (defaults to 1).\r
+     */\r
+    valueField:1,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-allowBlank"></div>/**\r
+     * @cfg {Boolean} allowBlank False to require at least one item in the list to be selected, true to allow no\r
+     * selection (defaults to true).\r
+     */\r
+    allowBlank:true,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-minSelections"></div>/**\r
+     * @cfg {Number} minSelections Minimum number of selections allowed (defaults to 0).\r
+     */\r
+    minSelections:0,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-maxSelections"></div>/**\r
+     * @cfg {Number} maxSelections Maximum number of selections allowed (defaults to Number.MAX_VALUE).\r
+     */\r
+    maxSelections:Number.MAX_VALUE,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-blankText"></div>/**\r
+     * @cfg {String} blankText Default text displayed when the control contains no items (defaults to the same value as\r
+     * {@link Ext.form.TextField#blankText}.\r
+     */\r
+    blankText:Ext.form.TextField.prototype.blankText,\r
+    <div id="cfg-Ext.ux.form.MultiSelect-minSelectionsText"></div>/**\r
+     * @cfg {String} minSelectionsText Validation message displayed when {@link #minSelections} is not met (defaults to 'Minimum {0}\r
+     * item(s) required').  The {0} token will be replaced by the value of {@link #minSelections}.\r
+     */\r
+    minSelectionsText:'Minimum {0} item(s) required',\r
+    <div id="cfg-Ext.ux.form.MultiSelect-maxSelectionsText"></div>/**\r
+     * @cfg {String} maxSelectionsText Validation message displayed when {@link #maxSelections} is not met (defaults to 'Maximum {0}\r
+     * item(s) allowed').  The {0} token will be replaced by the value of {@link #maxSelections}.\r
+     */\r
+    maxSelectionsText:'Maximum {0} item(s) allowed',\r
+    <div id="cfg-Ext.ux.form.MultiSelect-delimiter"></div>/**\r
+     * @cfg {String} delimiter The string used to delimit between items when set or returned as a string of values\r
+     * (defaults to ',').\r
+     */\r
+    delimiter:',',\r
+    <div id="cfg-Ext.ux.form.MultiSelect-store"></div>/**\r
+     * @cfg {Ext.data.Store/Array} store The data source to which this MultiSelect is bound (defaults to <tt>undefined</tt>).\r
+     * Acceptable values for this property are:\r
+     * <div class="mdetail-params"><ul>\r
+     * <li><b>any {@link Ext.data.Store Store} subclass</b></li>\r
+     * <li><b>an Array</b> : Arrays will be converted to a {@link Ext.data.ArrayStore} internally.\r
+     * <div class="mdetail-params"><ul>\r
+     * <li><b>1-dimensional array</b> : (e.g., <tt>['Foo','Bar']</tt>)<div class="sub-desc">\r
+     * A 1-dimensional array will automatically be expanded (each array item will be the combo\r
+     * {@link #valueField value} and {@link #displayField text})</div></li>\r
+     * <li><b>2-dimensional array</b> : (e.g., <tt>[['f','Foo'],['b','Bar']]</tt>)<div class="sub-desc">\r
+     * For a multi-dimensional array, the value in index 0 of each item will be assumed to be the combo\r
+     * {@link #valueField value}, while the value at index 1 is assumed to be the combo {@link #displayField text}.\r
+     * </div></li></ul></div></li></ul></div>\r
+     */\r
+\r
+    // private\r
+    defaultAutoCreate : {tag: "div"},\r
+\r
+    // private\r
+    initComponent: function(){\r
+        Ext.ux.form.MultiSelect.superclass.initComponent.call(this);\r
+\r
+        if(Ext.isArray(this.store)){\r
+            if (Ext.isArray(this.store[0])){\r
+                this.store = new Ext.data.ArrayStore({\r
+                    fields: ['value','text'],\r
+                    data: this.store\r
+                });\r
+                this.valueField = 'value';\r
+            }else{\r
+                this.store = new Ext.data.ArrayStore({\r
+                    fields: ['text'],\r
+                    data: this.store,\r
+                    expandData: true\r
+                });\r
+                this.valueField = 'text';\r
+            }\r
+            this.displayField = 'text';\r
+        } else {\r
+            this.store = Ext.StoreMgr.lookup(this.store);\r
+        }\r
+\r
+        this.addEvents({\r
+            'dblclick' : true,\r
+            'click' : true,\r
+            'change' : true,\r
+            'drop' : true\r
+        });\r
+    },\r
+\r
+    // private\r
+    onRender: function(ct, position){\r
+        Ext.ux.form.MultiSelect.superclass.onRender.call(this, ct, position);\r
+\r
+        var fs = this.fs = new Ext.form.FieldSet({\r
+            renderTo: this.el,\r
+            title: this.legend,\r
+            height: this.height,\r
+            width: this.width,\r
+            style: "padding:0;",\r
+            tbar: this.tbar,\r
+            bodyStyle: 'overflow: auto;'\r
+        });\r
+\r
+        this.view = new Ext.ListView({\r
+            multiSelect: true,\r
+            store: this.store,\r
+            columns: [{ header: 'Value', width: 1, dataIndex: this.displayField }],\r
+            hideHeaders: true\r
+        });\r
+\r
+        fs.add(this.view);\r
+\r
+        this.view.on('click', this.onViewClick, this);\r
+        this.view.on('beforeclick', this.onViewBeforeClick, this);\r
+        this.view.on('dblclick', this.onViewDblClick, this);\r
+\r
+        this.hiddenName = this.name || Ext.id();\r
+        var hiddenTag = { tag: "input", type: "hidden", value: "", name: this.hiddenName };\r
+        this.hiddenField = this.el.createChild(hiddenTag);\r
+        this.hiddenField.dom.disabled = this.hiddenName != this.name;\r
+        fs.doLayout();\r
+    },\r
+\r
+    // private\r
+    afterRender: function(){\r
+        Ext.ux.form.MultiSelect.superclass.afterRender.call(this);\r
+\r
+        if (this.ddReorder && !this.dragGroup && !this.dropGroup){\r
+            this.dragGroup = this.dropGroup = 'MultiselectDD-' + Ext.id();\r
+        }\r
+\r
+        if (this.draggable || this.dragGroup){\r
+            this.dragZone = new Ext.ux.form.MultiSelect.DragZone(this, {\r
+                ddGroup: this.dragGroup\r
+            });\r
+        }\r
+        if (this.droppable || this.dropGroup){\r
+            this.dropZone = new Ext.ux.form.MultiSelect.DropZone(this, {\r
+                ddGroup: this.dropGroup\r
+            });\r
+        }\r
+    },\r
+\r
+    // private\r
+    onViewClick: function(vw, index, node, e) {\r
+        this.fireEvent('change', this, this.getValue(), this.hiddenField.dom.value);\r
+        this.hiddenField.dom.value = this.getValue();\r
+        this.fireEvent('click', this, e);\r
+        this.validate();\r
+    },\r
+\r
+    // private\r
+    onViewBeforeClick: function(vw, index, node, e) {\r
+        if (this.disabled) {return false;}\r
+    },\r
+\r
+    // private\r
+    onViewDblClick : function(vw, index, node, e) {\r
+        return this.fireEvent('dblclick', vw, index, node, e);\r
+    },\r
+\r
+    <div id="method-Ext.ux.form.MultiSelect-getValue"></div>/**\r
+     * Returns an array of data values for the selected items in the list. The values will be separated\r
+     * by {@link #delimiter}.\r
+     * @return {Array} value An array of string data values\r
+     */\r
+    getValue: function(valueField){\r
+        var returnArray = [];\r
+        var selectionsArray = this.view.getSelectedIndexes();\r
+        if (selectionsArray.length == 0) {return '';}\r
+        for (var i=0; i<selectionsArray.length; i++) {\r
+            returnArray.push(this.store.getAt(selectionsArray[i]).get((valueField != null) ? valueField : this.valueField));\r
+        }\r
+        return returnArray.join(this.delimiter);\r
+    },\r
+\r
+    <div id="method-Ext.ux.form.MultiSelect-setValue"></div>/**\r
+     * Sets a delimited string (using {@link #delimiter}) or array of data values into the list.\r
+     * @param {String/Array} values The values to set\r
+     */\r
+    setValue: function(values) {\r
+        var index;\r
+        var selections = [];\r
+        this.view.clearSelections();\r
+        this.hiddenField.dom.value = '';\r
+\r
+        if (!values || (values == '')) { return; }\r
+\r
+        if (!Ext.isArray(values)) { values = values.split(this.delimiter); }\r
+        for (var i=0; i<values.length; i++) {\r
+            index = this.view.store.indexOf(this.view.store.query(this.valueField,\r
+                new RegExp('^' + values[i] + '$', "i")).itemAt(0));\r
+            selections.push(index);\r
+        }\r
+        this.view.select(selections);\r
+        this.hiddenField.dom.value = this.getValue();\r
+        this.validate();\r
+    },\r
+\r
+    // inherit docs\r
+    reset : function() {\r
+        this.setValue('');\r
+    },\r
+\r
+    // inherit docs\r
+    getRawValue: function(valueField) {\r
+        var tmp = this.getValue(valueField);\r
+        if (tmp.length) {\r
+            tmp = tmp.split(this.delimiter);\r
+        }\r
+        else {\r
+            tmp = [];\r
+        }\r
+        return tmp;\r
+    },\r
+\r
+    // inherit docs\r
+    setRawValue: function(values){\r
+        setValue(values);\r
+    },\r
+\r
+    // inherit docs\r
+    validateValue : function(value){\r
+        if (value.length < 1) { // if it has no value\r
+             if (this.allowBlank) {\r
+                 this.clearInvalid();\r
+                 return true;\r
+             } else {\r
+                 this.markInvalid(this.blankText);\r
+                 return false;\r
+             }\r
+        }\r
+        if (value.length < this.minSelections) {\r
+            this.markInvalid(String.format(this.minSelectionsText, this.minSelections));\r
+            return false;\r
+        }\r
+        if (value.length > this.maxSelections) {\r
+            this.markInvalid(String.format(this.maxSelectionsText, this.maxSelections));\r
+            return false;\r
+        }\r
+        return true;\r
+    },\r
+\r
+    // inherit docs\r
+    disable: function(){\r
+        this.disabled = true;\r
+        this.hiddenField.dom.disabled = true;\r
+        this.fs.disable();\r
+    },\r
+\r
+    // inherit docs\r
+    enable: function(){\r
+        this.disabled = false;\r
+        this.hiddenField.dom.disabled = false;\r
+        this.fs.enable();\r
+    },\r
+\r
+    // inherit docs\r
+    destroy: function(){\r
+        Ext.destroy(this.fs, this.dragZone, this.dropZone);\r
+        Ext.ux.form.MultiSelect.superclass.destroy.call(this);\r
+    }\r
+});\r
+\r
+\r
+Ext.reg('multiselect', Ext.ux.form.MultiSelect);\r
+\r
+//backwards compat\r
+Ext.ux.Multiselect = Ext.ux.form.MultiSelect;\r
+\r
+\r
+Ext.ux.form.MultiSelect.DragZone = function(ms, config){\r
+    this.ms = ms;\r
+    this.view = ms.view;\r
+    var ddGroup = config.ddGroup || 'MultiselectDD';\r
+    var dd;\r
+    if (Ext.isArray(ddGroup)){\r
+        dd = ddGroup.shift();\r
+    } else {\r
+        dd = ddGroup;\r
+        ddGroup = null;\r
+    }\r
+    Ext.ux.form.MultiSelect.DragZone.superclass.constructor.call(this, this.ms.fs.body, { containerScroll: true, ddGroup: dd });\r
+    this.setDraggable(ddGroup);\r
+};\r
+\r
+Ext.extend(Ext.ux.form.MultiSelect.DragZone, Ext.dd.DragZone, {\r
+    onInitDrag : function(x, y){\r
+        var el = Ext.get(this.dragData.ddel.cloneNode(true));\r
+        this.proxy.update(el.dom);\r
+        el.setWidth(el.child('em').getWidth());\r
+        this.onStartDrag(x, y);\r
+        return true;\r
+    },\r
+    \r
+    // private\r
+    collectSelection: function(data) {\r
+        data.repairXY = Ext.fly(this.view.getSelectedNodes()[0]).getXY();\r
+        var i = 0;\r
+        this.view.store.each(function(rec){\r
+            if (this.view.isSelected(i)) {\r
+                var n = this.view.getNode(i);\r
+                var dragNode = n.cloneNode(true);\r
+                dragNode.id = Ext.id();\r
+                data.ddel.appendChild(dragNode);\r
+                data.records.push(this.view.store.getAt(i));\r
+                data.viewNodes.push(n);\r
+            }\r
+            i++;\r
+        }, this);\r
+    },\r
+\r
+    // override\r
+    onEndDrag: function(data, e) {\r
+        var d = Ext.get(this.dragData.ddel);\r
+        if (d && d.hasClass("multi-proxy")) {\r
+            d.remove();\r
+        }\r
+    },\r
+\r
+    // override\r
+    getDragData: function(e){\r
+        var target = this.view.findItemFromChild(e.getTarget());\r
+        if(target) {\r
+            if (!this.view.isSelected(target) && !e.ctrlKey && !e.shiftKey) {\r
+                this.view.select(target);\r
+                this.ms.setValue(this.ms.getValue());\r
+            }\r
+            if (this.view.getSelectionCount() == 0 || e.ctrlKey || e.shiftKey) return false;\r
+            var dragData = {\r
+                sourceView: this.view,\r
+                viewNodes: [],\r
+                records: []\r
+            };\r
+            if (this.view.getSelectionCount() == 1) {\r
+                var i = this.view.getSelectedIndexes()[0];\r
+                var n = this.view.getNode(i);\r
+                dragData.viewNodes.push(dragData.ddel = n);\r
+                dragData.records.push(this.view.store.getAt(i));\r
+                dragData.repairXY = Ext.fly(n).getXY();\r
+            } else {\r
+                dragData.ddel = document.createElement('div');\r
+                dragData.ddel.className = 'multi-proxy';\r
+                this.collectSelection(dragData);\r
+            }\r
+            return dragData;\r
+        }\r
+        return false;\r
+    },\r
+\r
+    // override the default repairXY.\r
+    getRepairXY : function(e){\r
+        return this.dragData.repairXY;\r
+    },\r
+\r
+    // private\r
+    setDraggable: function(ddGroup){\r
+        if (!ddGroup) return;\r
+        if (Ext.isArray(ddGroup)) {\r
+            Ext.each(ddGroup, this.setDraggable, this);\r
+            return;\r
+        }\r
+        this.addToGroup(ddGroup);\r
+    }\r
+});\r
+\r
+Ext.ux.form.MultiSelect.DropZone = function(ms, config){\r
+    this.ms = ms;\r
+    this.view = ms.view;\r
+    var ddGroup = config.ddGroup || 'MultiselectDD';\r
+    var dd;\r
+    if (Ext.isArray(ddGroup)){\r
+        dd = ddGroup.shift();\r
+    } else {\r
+        dd = ddGroup;\r
+        ddGroup = null;\r
+    }\r
+    Ext.ux.form.MultiSelect.DropZone.superclass.constructor.call(this, this.ms.fs.body, { containerScroll: true, ddGroup: dd });\r
+    this.setDroppable(ddGroup);\r
+};\r
+\r
+Ext.extend(Ext.ux.form.MultiSelect.DropZone, Ext.dd.DropZone, {\r
+    <div id="method-Ext.ux.form.MultiSelect-getTargetFromEvent"></div>/**\r
+        * Part of the Ext.dd.DropZone interface. If no target node is found, the\r
+        * whole Element becomes the target, and this causes the drop gesture to append.\r
+        */\r
+    getTargetFromEvent : function(e) {\r
+        var target = e.getTarget();\r
+        return target;\r
+    },\r
+\r
+    // private\r
+    getDropPoint : function(e, n, dd){\r
+        if (n == this.ms.fs.body.dom) { return "below"; }\r
+        var t = Ext.lib.Dom.getY(n), b = t + n.offsetHeight;\r
+        var c = t + (b - t) / 2;\r
+        var y = Ext.lib.Event.getPageY(e);\r
+        if(y <= c) {\r
+            return "above";\r
+        }else{\r
+            return "below";\r
+        }\r
+    },\r
+\r
+    // private\r
+    isValidDropPoint: function(pt, n, data) {\r
+        if (!data.viewNodes || (data.viewNodes.length != 1)) {\r
+            return true;\r
+        }\r
+        var d = data.viewNodes[0];\r
+        if (d == n) {\r
+            return false;\r
+        }\r
+        if ((pt == "below") && (n.nextSibling == d)) {\r
+            return false;\r
+        }\r
+        if ((pt == "above") && (n.previousSibling == d)) {\r
+            return false;\r
+        }\r
+        return true;\r
+    },\r
+\r
+    // override\r
+    onNodeEnter : function(n, dd, e, data){\r
+        return false;\r
+    },\r
+\r
+    // override\r
+    onNodeOver : function(n, dd, e, data){\r
+        var dragElClass = this.dropNotAllowed;\r
+        var pt = this.getDropPoint(e, n, dd);\r
+        if (this.isValidDropPoint(pt, n, data)) {\r
+            if (this.ms.appendOnly) {\r
+                return "x-tree-drop-ok-below";\r
+            }\r
+\r
+            // set the insert point style on the target node\r
+            if (pt) {\r
+                var targetElClass;\r
+                if (pt == "above"){\r
+                    dragElClass = n.previousSibling ? "x-tree-drop-ok-between" : "x-tree-drop-ok-above";\r
+                    targetElClass = "x-view-drag-insert-above";\r
+                } else {\r
+                    dragElClass = n.nextSibling ? "x-tree-drop-ok-between" : "x-tree-drop-ok-below";\r
+                    targetElClass = "x-view-drag-insert-below";\r
+                }\r
+                if (this.lastInsertClass != targetElClass){\r
+                    Ext.fly(n).replaceClass(this.lastInsertClass, targetElClass);\r
+                    this.lastInsertClass = targetElClass;\r
+                }\r
+            }\r
+        }\r
+        return dragElClass;\r
+    },\r
+\r
+    // private\r
+    onNodeOut : function(n, dd, e, data){\r
+        this.removeDropIndicators(n);\r
+    },\r
+\r
+    // private\r
+    onNodeDrop : function(n, dd, e, data){\r
+        if (this.ms.fireEvent("drop", this, n, dd, e, data) === false) {\r
+            return false;\r
+        }\r
+        var pt = this.getDropPoint(e, n, dd);\r
+        if (n != this.ms.fs.body.dom)\r
+            n = this.view.findItemFromChild(n);\r
+        var insertAt = (this.ms.appendOnly || (n == this.ms.fs.body.dom)) ? this.view.store.getCount() : this.view.indexOf(n);\r
+        if (pt == "below") {\r
+            insertAt++;\r
+        }\r
+\r
+        var dir = false;\r
+\r
+        // Validate if dragging within the same MultiSelect\r
+        if (data.sourceView == this.view) {\r
+            // If the first element to be inserted below is the target node, remove it\r
+            if (pt == "below") {\r
+                if (data.viewNodes[0] == n) {\r
+                    data.viewNodes.shift();\r
+                }\r
+            } else {  // If the last element to be inserted above is the target node, remove it\r
+                if (data.viewNodes[data.viewNodes.length - 1] == n) {\r
+                    data.viewNodes.pop();\r
+                }\r
+            }\r
+\r
+            // Nothing to drop...\r
+            if (!data.viewNodes.length) {\r
+                return false;\r
+            }\r
+\r
+            // If we are moving DOWN, then because a store.remove() takes place first,\r
+            // the insertAt must be decremented.\r
+            if (insertAt > this.view.store.indexOf(data.records[0])) {\r
+                dir = 'down';\r
+                insertAt--;\r
+            }\r
+        }\r
+\r
+        for (var i = 0; i < data.records.length; i++) {\r
+            var r = data.records[i];\r
+            if (data.sourceView) {\r
+                data.sourceView.store.remove(r);\r
+            }\r
+            this.view.store.insert(dir == 'down' ? insertAt : insertAt++, r);\r
+            var si = this.view.store.sortInfo;\r
+            if(si){\r
+                this.view.store.sort(si.field, si.direction);\r
+            }\r
+        }\r
+        return true;\r
+    },\r
+\r
+    // private\r
+    removeDropIndicators : function(n){\r
+        if(n){\r
+            Ext.fly(n).removeClass([\r
+                "x-view-drag-insert-above",\r
+                "x-view-drag-insert-left",\r
+                "x-view-drag-insert-right",\r
+                "x-view-drag-insert-below"]);\r
+            this.lastInsertClass = "_noclass";\r
+        }\r
+    },\r
+\r
+    // private\r
+    setDroppable: function(ddGroup){\r
+        if (!ddGroup) return;\r
+        if (Ext.isArray(ddGroup)) {\r
+            Ext.each(ddGroup, this.setDroppable, this);\r
+            return;\r
+        }\r
+        this.addToGroup(ddGroup);\r
+    }\r
+});\r
+</pre>    \r
+</body>\r
+</html>
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