Bug 49005 Preference page doesn't get enough space to draw itself
200312162000 There are cases where the preference dialog doesn't allocate enough space for a page to draw itself. The width of the page seems to be a few pixels short.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
void selectCurrentPageAgain() {
		if (lastSuccessfulNode == null)
			return;
		getTreeViewer().setSelection(new StructuredSelection(lastSuccessfulNode));
		currentPage.setVisible(true);
	}
	/**
	 * Selects the saved item in the tree of preference pages.
	 * If it cannot do this it saves the first one.
	 */
	protected void selectSavedItem() {
		IPreferenceNode node = findNodeMatching(getSelectedNodePreference());
		if (node == null) {
			IPreferenceNode[] nodes = preferenceManager.getRoot().getSubNodes();
			if (nodes.length > 0)
				node = nodes[0];
		}
		if (node != null) {
			getTreeViewer().setSelection(new StructuredSelection(node), true);
			            
			getTreeViewer().getControl().setFocus();
		}
	}
	/**
	 * Display the given error message. The currently displayed message
	 * is saved and will be redisplayed when the error message is set
	 * to <code>null</code>.
	 *
	 * @param errorMessage the errorMessage to display or <code>null</code>
	 */