original = selectedLayer.getStyleBlackboard();
EditorPageManager manager = EditorPageManager.loadManager(PrintingPlugin.getDefault(), selectedLayer );
Shell parentShell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
StyleEditorDialog dialog = StyleEditorDialog.createDialogOn(parentShell, null, selectedLayer, manager);
dialog.setBlockOnOpen(true);
int returnCode = dialog.open();
if( returnCode!=Window.OK ){
selectedLayer.setStyleBlackboard(original);
original = null;
}