eu.etaxonomy.taxeditor.molecular/src/main/java/eu/etaxonomy/taxeditor/molecular/handler/AbstractAlignmentEditorHandler.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2015 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10 package eu.etaxonomy.taxeditor.molecular.handler;
  11
  12
  13 import org.eclipse.core.commands.AbstractHandler;
  14 import org.eclipse.core.commands.ExecutionEvent;
  15 import org.eclipse.core.commands.ExecutionException;
  16 import org.eclipse.ui.IEditorPart;
  17
  18 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  19 import eu.etaxonomy.taxeditor.molecular.editor.AlignmentEditor;
  20
  21
  22
  23
  24 /**
  25  * Abstract implementation for all handlers triggering actions in an active instance of
  26  * {@link AlignmentEditor}.
  27  *
  28  * @author Ben Stöver
  29  * @date 19.06.2015
  30  */
  31 public abstract class AbstractAlignmentEditorHandler extends AbstractHandler {
  32         public static AlignmentEditor getActiveAlignmentEditor() {
  33         IEditorPart activeEditor = AbstractUtility.getActiveEditor();
  34         if (activeEditor instanceof AlignmentEditor) {
  35             return (AlignmentEditor)activeEditor;
  36         }
  37         else {
  38                 return null;
  39         }
  40         }
  41
  42
  43     @Override
  44     public Object execute(ExecutionEvent event) throws ExecutionException {
  45         AlignmentEditor editor = getActiveAlignmentEditor();
  46         if (editor != null) {
  47             doExecute(event, editor);
  48         }
  49         return null;
  50     }
  51
  52
  53     protected abstract void doExecute(ExecutionEvent event, AlignmentEditor editor) throws ExecutionException;
  54 }