Bug 211610 [Forms] Adopt new MPE key binding API
bundles/org.eclipse.ui.forms/src/org/eclipse/ui/forms/editor/FormEditor.java
IPageChangeProvider {
	/**
	 * An array of pages currently in the editor. Page objects are not limited
	 * to those that implement <code>IFormPage</code>, hence the size of this
	 * array matches the number of pages as viewed by the user.
	 * <p>
	 * Subclasses can access this field but should not modify it.
	 */
	protected Vector pages = new Vector();
	private FormToolkit toolkit;
	private int currentPage = -1;
	private ListenerList pageListeners = new ListenerList();
	private static class FormEditorSelectionProvider extends
			MultiPageSelectionProvider {
		private ISelection globalSelection;
		/**
		 * @param formEditor the editor
		 */