where is the best place to initialize a plugin (roweditor)

[giraffezw]

the problem is, after destroy the window the editor is gone. I have the following two solutions

Ext.kv73.FeedbackGrid = Ext.extend(Ext.grid.GridPanel, {
    //some properties
    ,initComponent:function() {
        
        Ext.apply(this, {
            editor : new Ext.ux.grid.RowEditor({
                    saveText: 'Speichern'
                    ,cancelText: 'Abbrechen'
                    ,listeners:{
                        beforeedit : function(editorPanel,rowIndex){
                            var rec = editorPanel.grid.getStore().getAt(rowIndex);
                            if (rec.data.user != currentUserName) {
                                return false;
                            }
                            return true;
                        }
                    }
                })
        });

        Ext.apply(this, {
            store: //store
            ,listeners: //listeners
                })
            ,columns: [{
                    header: "Kopf", id:'headline', width: 250, sortable: true, dataIndex: 'headline', editor: {
                            xtype: 'textarea'
                            ,allowBlank: false
                        }, renderer: this.renderPreTag
            }]
            ,plugins: [
                this.editor
            ]
        });

        Ext.kv73.FeedbackGrid.superclass.initComponent.apply(this, arguments);
    } // eo function initComponent

    ,onRender: function() {

            this.store.load();

        Ext.kv73.FeedbackGrid.superclass.onRender.apply(this, arguments);
    } // eo function onRender

,listeners: {
        headerclick: function(grid, columnIndex, eventObject) {
            var header = grid.colModel.getColumnHeader(columnIndex);
            var out = header.match('div');
            if ( out != null) {

                var record = new this.feedback({
                    headline: 'Kopfzeile'
                    ,content: 'Text'
                    ,user: currentUserName
                    ,lastUpdated: new Date()
                    ,dateCreated: new Date()
                });

                this.editor.stopEditing();
                this.store.insert(0, record);
                this.getView().refresh();
                this.getSelectionModel().selectRow(0);
                this.editor.startEditing(0);
            }
        }

    ,feedback: Ext.data.Record.create([{
        name: 'headline',
        type: 'string'
    }, {
        name: 'content',
        type: 'string'
    }, {
        name: 'user',
        type: 'string'
    },{
        name: 'lastUpdated',
        type: 'date'
        ,dateFormat: 'n/j/Y'
    },{
        name: 'dateCreated',
        type: 'date'
        ,dateFormat: 'n/j/Y'
    }])

});

Ext.reg('feedbackgrid', Ext.kv73.FeedbackGrid); 

a other way to inizialise the plugin could be

,plugins: [
new Ext.ux.grid.RowEditor({
                    saveText: 'Speichern'
                    ,cancelText: 'Abbrechen'
                    ,listeners:{
                        beforeedit : function(editorPanel,rowIndex){
                            var rec = editorPanel.grid.getStore().getAt(rowIndex);
                            if (rec.data.user != currentUserName) {
                                return false;
                            }
                            return true;
                        }
                    }
                })
] 

and in the headerclick listener

this.plugins[0].stopEditing();
                this.store.insert(0, record);
                this.getView().refresh();
                this.getSelectionModel().selectRow(0);
                this.plugins[0].startEditing(0); 

in the first solution i have 2 times Ext.apply and in the second i have to write this.plugins[0]... So, what is the best way to implement (initialize ) the plugin?

thanks for help