1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.diagram.handler.e4;
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14 import javax.inject.Named;
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16 import org.eclipse.core.runtime.IAdaptable;
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17 import org.eclipse.e4.core.di.annotations.CanExecute;
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18 import org.eclipse.e4.core.di.annotations.Execute;
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19 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
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20 import org.eclipse.e4.ui.services.IServiceConstants;
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21 import org.eclipse.ui.IEditorPart;
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22 import org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor;
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23 import org.simantics.g2d.canvas.ICanvasContext;
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24 import org.simantics.scenegraph.g2d.events.EventDebugPolicy;
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25 import org.simantics.scenegraph.g2d.events.EventQueue;
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26 import org.simantics.scenegraph.g2d.events.command.Command;
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27 import org.simantics.scenegraph.g2d.events.command.CommandEvent;
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28 import org.simantics.utils.ui.workbench.WorkbenchUtils;
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31 * A handler for the Eclipse Command framework that delegates ID of the command
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32 * that triggered the event to the {@link EventQueue} of the
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33 * {@link ICanvasContext} where the event occurred.
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35 public class CanvasCommandDelegate {
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37 private final boolean DEBUG = EventDebugPolicy.CANVAS_COMMAND_DELEGATION;
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39 private static final String ACTIVE_PART_PARAMETER = "org.simantics.diagram.commandparameter.canvasCommandHandlerActiveWithPart";
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40 private static final String DELEGATE_PARAMETER = "org.simantics.diagram.commandparameter.canvasCommandDelegateParameter";
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43 public boolean canExecute(@Named(ACTIVE_PART_PARAMETER) String activePartId, @Named(IServiceConstants.ACTIVE_PART) MPart activePart) {
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44 if (activePart == null)
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46 if (!(activePart.getObject() instanceof CompatibilityEditor))
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48 CompatibilityEditor compatibilityEditor = (CompatibilityEditor) activePart.getObject();
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49 IEditorPart part = compatibilityEditor.getEditor();
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52 ICanvasContext ctx = part.getAdapter(ICanvasContext.class);
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55 String id = compatibilityEditor.getReference().getId();
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56 if (!(id.equals(activePartId)))
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61 @SuppressWarnings("restriction")
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63 public void execute(@Named(DELEGATE_PARAMETER) String commandId, @Named(IServiceConstants.ACTIVE_PART) MPart activePart) {
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64 CommandEvent ce = new CommandEvent(null, System.currentTimeMillis(), new Command(commandId));
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66 System.out.println(getClass().getSimpleName() + ": trigger event for command " + ce.command);
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68 Object object = activePart.getObject();
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70 IAdaptable part = null;
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71 if (object instanceof CompatibilityEditor) {
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72 CompatibilityEditor editor = (CompatibilityEditor) object;
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73 part = editor.getPart();
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74 } else if (object instanceof IAdaptable){
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75 part = (IAdaptable) object;
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77 ICanvasContext canvas = null;
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79 canvas = (ICanvasContext) part.getAdapter(ICanvasContext.class);
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80 if (canvas == null) {
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81 part = WorkbenchUtils.getActiveWorkbenchPart();
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83 canvas = (ICanvasContext) part.getAdapter(ICanvasContext.class);
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85 if (canvas != null) {
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87 System.out.println(getClass().getSimpleName() + ": sending command " + commandId + " to " + part);
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88 canvas.getEventQueue().queueEvent(ce);
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