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
  16 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  17 import eu.etaxonomy.taxeditor.molecular.editor.e4.AlignmentEditorE4;
  18
  19
  20
  21
  22 /**
  23  * Abstract implementation for all handlers triggering actions in an active instance of
  24  * {@link AlignmentEditorE4}.
  25  *
  26  * @author Ben Stöver
  27  * @date 19.06.2015
  28  */
  29 public abstract class AbstractAlignmentEditorHandler extends AbstractHandler {
  30         public static AlignmentEditorE4 getActiveAlignmentEditor() {
  31             Object activeEditor = AbstractUtility.getActiveEditor();
  32         if (activeEditor instanceof AlignmentEditorE4) {
  33             return (AlignmentEditorE4)activeEditor;
  34         }
  35         else {
  36                 return null;
  37         }
  38         }
  39
  40
  41     @Override
  42     public Object execute(ExecutionEvent event) throws ExecutionException {
  43         AlignmentEditorE4 editor = getActiveAlignmentEditor();
  44         if (editor != null) {
  45             doExecute(event, editor);
  46         }
  47         return null;
  48     }
  49
  50
  51     protected abstract void doExecute(ExecutionEvent event, AlignmentEditorE4 editor) throws ExecutionException;
  52 }