bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/handlers/e4/ToggleFocusabilityHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     Semantum Oy - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.modeling.ui.diagramEditor.handlers.e4;
  13
  14 import org.eclipse.e4.core.contexts.Active;
  15 import org.eclipse.e4.core.di.annotations.CanExecute;
  16 import org.eclipse.e4.core.di.annotations.Execute;
  17 import org.eclipse.e4.core.di.annotations.Optional;
  18 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  19 import org.eclipse.e4.ui.model.application.ui.menu.MToolItem;
  20 import org.eclipse.ui.IEditorPart;
  21 import org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor;
  22 import org.simantics.g2d.diagram.DiagramHints;
  23 import org.simantics.g2d.diagram.IDiagram;
  24 import org.simantics.g2d.layers.ILayersEditor;
  25 import org.simantics.modeling.ui.diagramEditor.DiagramEditor;
  26 import org.simantics.utils.ui.workbench.WorkbenchUtils;
  27
  28 /**
  29  * @author Tuukka Lehtonen
  30  */
  31 public class ToggleFocusabilityHandler {
  32
  33     @CanExecute
  34     public boolean canExecute(@Active MPart part) {
  35         if (!(part.getObject() instanceof CompatibilityEditor))
  36             return false;
  37         CompatibilityEditor editor = (CompatibilityEditor) part.getObject();
  38         if (!(editor.getPart() instanceof DiagramEditor))
  39             return false;
  40         return true;
  41     }
  42
  43         @Execute
  44         public void execute(@Optional MToolItem toolItem) {
  45                 ILayersEditor le = getLayers();
  46                 if (le != null) {
  47                         boolean b = le.getIgnoreFocusSettings();
  48                         le.setIgnoreFocusSettings( !b );
  49
  50                         if (toolItem != null) {
  51                             toolItem.setSelected(!b);
  52                             toolItem.setTooltip((!b ? "Deny" : "Allow") + " Focusing and Editing of Images");
  53                         }
  54                 }
  55         }
  56
  57         protected ILayersEditor getLayers() {
  58                 DiagramEditor editor = getEditor();
  59                 if (editor == null)
  60                         return null;
  61                 return getLayers(editor);
  62         }
  63
  64         protected ILayersEditor getLayers(DiagramEditor editor) {
  65                 // The diagram might not be available since the diagram editor loads it asynchronously.
  66                 IDiagram diagram = (IDiagram) editor.getAdapter(IDiagram.class);
  67                 if (diagram == null)
  68                         return null;
  69                 //System.out.println("getLayersEditor(" + diagram + ")");
  70                 ILayersEditor le = diagram.getHint(DiagramHints.KEY_LAYERS_EDITOR);
  71                 return le;
  72         }
  73
  74         protected DiagramEditor getEditor() {
  75                 IEditorPart editorPart = WorkbenchUtils.getActiveEditor();
  76                 if (editorPart == null)
  77                         return null;
  78                 if (editorPart instanceof DiagramEditor) {
  79                         DiagramEditor editor = (DiagramEditor) editorPart;
  80                         return editor;
  81                 }
  82                 return null;
  83         }
  84
  85 }