Bug 245437 [Preferences] (HEAD) Preference pages not scrollable (accessible) via keyboard
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
currentPage = newPage;
		
		currentPage.setContainer(this);
		
		
		if (currentPage.getControl() == null) {
			final boolean[] failed = { false };
			SafeRunnable.run(new ISafeRunnable() {
				public void handleException(Throwable e) {
					failed[0] = true;
				}
				public void run() {
					createPageControl(currentPage, pageContainer);
				}
			});
			if (failed[0]) {
				return false;
			}
			
			
			
			Assert.isNotNull(currentPage.getControl());
		}
		
		
		final Point[] size = new Point[1];
		final Point failed = new Point(-1, -1);
		SafeRunnable.run(new ISafeRunnable() {
			public void handleException(Throwable e) {
				size[0] = failed;