Bug 55827 [Contributions] Need to remove refs to Platform.getDebugOption from JFace
build I20040323 Standalone JFace applications are currently broken due to several refs to Platform.getDebugOption in JFace, which is only available if Eclipse is running. Should have static flags for the various debug options in JFace, and initialize them from the Workbench.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
*/
	protected Control dialogArea;
	/**
	 * The button bar; <code>null</code> until dialog is layed out.
	 */
	public Control buttonBar;
	/**
	 * Collection of buttons created by the <code>createButton</code> method.
	 */
	private HashMap buttons = new HashMap();
	/**
	 * Font metrics to use for determining pixel sizes.
	 */
	private FontMetrics fontMetrics;
	/**
	 * Number of horizontal dialog units per character, value <code>4</code>. 
	 */
	private static final int HORIZONTAL_DIALOG_UNIT_PER_CHAR = 4;
	/**
	 * Number of vertical dialog units per character, value <code>8</code>. 
	 */
	private static final int VERTICAL_DIALOG_UNITS_PER_CHAR = 8;
	/**
	 * Returns the number of pixels corresponding to the
	 * height of the given number of characters.
	 * <p>
	 * The required <code>FontMetrics</code> parameter may be created in the 
	 * following way:
	 * <code>
	 * 	GC gc = new GC(control);