EDIT

import java.util.HashSet;

import java.util.Set;

	/**

	 * Opens a new editor window with the given TaxonEditorInput

	 *

	 * @param input

	 *            a {@link eu.etaxonomy.taxeditor.editor.TaxonEditorInput}

	 *            object.

	 * @throws org.eclipse.ui.PartInitException

	 *             if any.

	 */

	public static void open(TaxonEditorInput input) throws PartInitException {

		open(input, MultiPageTaxonEditor.ID);

	}

	/**

	 * Returns a set of all currently open <code>MultiPageTaxonEditor</code>s.

	 *

	 * @return a {@link java.util.Set} object.

	 */

	public static Set<IEditorPart> getOpenEditors() {

		Set<IEditorPart> taxonEditors = new HashSet<IEditorPart>();

		if (getActivePage() != null) {

			for (IEditorReference reference : getActivePage()

					.getEditorReferences()) {

				IEditorPart editor = reference.getEditor(false);

				if (editor instanceof MultiPageTaxonEditor) {

					taxonEditors.add(editor);

				}

			}

		}

		return taxonEditors;

	}

	/**

	 * Returns the currently active taxon editor

	 *

	 * @return the taxon editor that has focus

	 */

	public static MultiPageTaxonEditor getActiveMultiPageTaxonEditor() {

		Object editorPart = getActiveE4Editor();

		if (editorPart != null && editorPart instanceof MultiPageTaxonEditor) {

			MultiPageTaxonEditor editor = (MultiPageTaxonEditor) editorPart;

			editor.getConversationHolder().bind();

			return editor;

		}

		return null;

	}

	/**

	 * <p>

	 * getActiveEditorPage

	 * </p>

	 *

	 * @param page

	 *            a {@link eu.etaxonomy.taxeditor.editor.Page} object.

	 * @return a {@link org.eclipse.ui.IEditorPart} object.

	 */

	public static IEditorPart getActiveEditorPage(Page page) {

		MultiPageTaxonEditor editor = getActiveMultiPageTaxonEditor();

		return editor != null ? editor.getPage(page) : null;

	}

	/**

	 * Returns the selection of the currently active taxon editor

	 *

	 * @return a {@link org.eclipse.jface.viewers.ISelection} object.

	 */

	public static ISelection getCurrentSelection() {

		if (getActiveMultiPageTaxonEditor() == null) {

			return null;

		} else {

			return getActiveMultiPageTaxonEditor().getSite()

					.getSelectionProvider().getSelection();

		}

	}

	/**

	 * <p>

	 * getUndoContext

	 * </p>

	 *

	 * @param editor

	 *            a {@link eu.etaxonomy.taxeditor.editor.MultiPageTaxonEditor}

	 *            object.

	 * @return a {@link org.eclipse.core.commands.operations.IUndoContext}

	 *         object.

	 */

	public static IUndoContext getUndoContext(MultiPageTaxonEditor editor) {

		return editor.getUndoContext();

	}