Render New Html to editor with Action of Traits

I create New custom Tool with (default html) when draged , and i also create traits for this component when i click on checkbox excuting function (do stuff())>> the result of this function new html i want to append it to editor , i have used to select by class ( in jquery ) from editor( the default html to append to it ) but not work , how can i render new html to editor on action , and how can to select some html by class or id to append to it some new htmldata ============= I create my new custom tool by: this.editor.BlockManager.add('sidebar', { id: 'sidebar', label: 'SideBar', attributes:...