eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/handler/alignmenteditor/ToggleInsertOverwriteHandler.java

   1 /**
   2 * Copyright (C) 2007 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
  10 package eu.etaxonomy.taxeditor.editor.handler.alignmenteditor;
  11
  12
  13 import java.util.HashMap;
  14 import java.util.Map;
  15
  16 import org.eclipse.core.commands.AbstractHandler;
  17 import org.eclipse.core.commands.ExecutionEvent;
  18 import org.eclipse.core.commands.ExecutionException;
  19 import org.eclipse.jface.resource.ImageDescriptor;
  20 import org.eclipse.ui.IEditorPart;
  21 import org.eclipse.ui.PlatformUI;
  22 import org.eclipse.ui.commands.ICommandService;
  23 import org.eclipse.ui.commands.IElementUpdater;
  24 import org.eclipse.ui.menus.UIElement;
  25
  26 import eu.etaxonomy.taxeditor.editor.handler.HandlerTools;
  27 import eu.etaxonomy.taxeditor.editor.molecular.AlignmentEditor;
  28 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  29
  30
  31
  32 /**
  33  * Switches an {@link AlignmentEditor} between insertion and overwrite mode.
  34  *
  35  * @author Ben Stöver
  36  * @date 04.12.2014
  37  */
  38 public class ToggleInsertOverwriteHandler extends AbstractHandler implements IElementUpdater {
  39         public static final String COMMAND_ID =
  40                         "eu.etaxonomy.taxeditor.editor.molecular.AlignmentEditor.toggleInsertOverwrite";
  41
  42
  43     private final ImageDescriptor INSERT_DESCRIPTOR = HandlerTools.createImageDescriptor("insert-16x16.png");
  44     private final ImageDescriptor OVERWRITE_DESCRIPTOR = HandlerTools.createImageDescriptor("overwrite-16x16.png");
  45
  46
  47     @Override
  48         public Object execute(ExecutionEvent event) throws ExecutionException {
  49         IEditorPart activeEditor = AbstractUtility.getActiveEditor();
  50         if (activeEditor instanceof AlignmentEditor) {
  51             ((AlignmentEditor)activeEditor).toggleInsertOverwrite();
  52             ((ICommandService)PlatformUI.getWorkbench().getService(ICommandService.class)).refreshElements(
  53                     ToggleLeftRightInsertionHandler.COMMAND_ID, new HashMap());
  54         }
  55         return null;
  56         }
  57
  58
  59         @Override
  60         public void updateElement(UIElement element, @SuppressWarnings("rawtypes") Map parameters) {
  61         IEditorPart activeEditor = AbstractUtility.getActiveEditor();
  62                 if (activeEditor instanceof AlignmentEditor) {
  63                         if (((AlignmentEditor)activeEditor).isInsertMode()) {
  64                             element.setIcon(INSERT_DESCRIPTOR);
  65                                 element.setText("INS");
  66                                 element.setTooltip("Click to switch to overwrite mode");
  67                         }
  68                         else {
  69                 element.setIcon(OVERWRITE_DESCRIPTOR);
  70                                 element.setText("OVR");
  71                                 element.setTooltip("Click to switch to insertion mode");
  72                         }
  73                 }
  74         }
  75 }