GWT Property Grid Readonly

In my case I want to set the property grid to read only mode.
How I can do that?

1. Readonly. Can't copy.
   
   Just add the editor event listener of the property panel, and on doBeforeEdit, set to always return false;
   

   LTCInfoGrid.addEditorGridListener(new EditorGridListenerAdapter(){
           @Override
           public boolean doBeforeEdit(GridPanel grid, Record record, String field, Object value, int rowIndex, int colIndex) {
               return super.doBeforeEdit(grid, record, field, value, rowIndex, colIndex);
           }
   )};
   

   
   
2. Read only. Can copy & modified but reset the changes.
   
   Add the listener to editor listener, on doValidateEdit, set to always return false
   

   
   LTCInfoGrid.addEditorGridListener(new EditorGridListenerAdapter(){
   
    @Override
    public boolean doValidateEdit(GridPanel grid, Record record, String field, Object value, Object originalValue, int rowIndex, int colIndex) {
        return false;
    }
   });