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

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