Composite composite_2 = new Composite(tabFolder_1, SWT.NONE);
tbtmNewItem.setControl(composite_2);
composite_2.setLayout(new GridLayout(1, false));
tbtmNewItem.setText(key);
tbtmNewItem.addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
DataContent dataContent = (DataContent) tbtmNewItem
.getData();
openDataContent.remove(dataContent);