Bug 137315 [Dialogs] Doubleclickable area to restore dialog size is often very small
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
* (non-Javadoc)
		 * 
		 * @see org.eclipse.jface.dialogs.IDialogBlockedHandler#showBlocked(org.eclipse.swt.widgets.Shell,
		 *      org.eclipse.core.runtime.IProgressMonitor,
		 *      org.eclipse.core.runtime.IStatus, java.lang.String)
		 */
		public void showBlocked(Shell parentShell, IProgressMonitor blocking,
				IStatus blockingStatus, String blockedName) {
			
		}
	};
	/**
	 * Creates a dialog instance. Note that the window will have no visual
	 * representation (no widgets) until it is told to open. By default,
	 * <code>open</code> blocks for dialogs.
	 * 
	 * @param parentShell
	 *            the parent shell, or <code>null</code> to create a top-level
	 *            shell
	 */
	protected Dialog(Shell parentShell) {
		this(new SameShellProvider(parentShell));
		if (parentShell == null && Policy.DEBUG_DIALOG_NO_PARENT) {
			Policy.getLog().log(
					new Status(IStatus.INFO, Policy.JFACE, IStatus.INFO, this
							.getClass()
							+ " created with no shell",
							new Exception()));
		}
	}