Bug 126527 [Field Assist] - API - Field Decoration alignment issues are different for cell editors
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/DecoratedTextCellEditor.java
checkSelection();
				checkDeleteable();
				checkSelectable();
			}
		});
		text.addFocusListener(new FocusAdapter() {
			public void focusLost(FocusEvent e) {
				DecoratedTextCellEditor.this.focusLost();
			}
		});
		text.setFont(parent.getFont());
		text.setBackground(parent.getBackground());
		text.setText("");
		text.addModifyListener(getModifyListener());
		
		return decoratedField.getLayoutControl();
		
	}
	/**
	 * The <code>TextCellEditor</code> implementation of this
	 * <code>CellEditor</code> framework method returns the text string.
	 * 
	 * @return the text string
	 */
	protected Object doGetValue() {
		return text.getText();
	}
	/*
	 * (non-Javadoc) Method declared on CellEditor.
	 */