Group mapLayersGroup = new Group(this, SWT.NONE);
mapLayersGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
mapLayersGroup.setLayout(new GridLayout(1, false));
mapLayersGroup.setText(Messages.getString("layers_list_title"));
mapLayerTableViewer = new MaplayerTableViewer(mapLayersGroup, SWT.BORDER | SWT.FULL_SELECTION);
GridData listGD = new GridData(SWT.FILL, SWT.FILL, true, true);
mapLayerTableViewer.getTable().setLayoutData(listGD);
Composite buttonComposite = new Composite(mapLayersGroup, SWT.NONE);
buttonComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));