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.g2d.tooltip;
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14 import org.simantics.g2d.diagram.IDiagram;
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15 import org.simantics.g2d.diagram.IDiagram.CompositionListener;
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16 import org.simantics.g2d.element.IElement;
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17 import org.simantics.g2d.element.handler.Clickable.PressStatus;
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18 import org.simantics.g2d.element.handler.impl.AbstractClickable;
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19 import org.simantics.utils.datastructures.hints.IHintContext.Key;
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20 import org.simantics.utils.datastructures.hints.IHintListener;
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21 import org.simantics.utils.datastructures.hints.IHintObservable;
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26 * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
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29 public class TooltipParticipant extends BaseTooltipParticipant implements CompositionListener {
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31 private final ElementHoverListener listener = new ElementHoverListener();
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33 public TooltipParticipant() {
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37 protected void onDiagramSet(IDiagram newValue, IDiagram oldValue) {
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38 if (oldValue == newValue)
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40 if (oldValue != null) {
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41 for (IElement e : oldValue.getElements()) {
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44 oldValue.removeCompositionListener(this);
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46 if (newValue != null) {
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47 for (IElement e : newValue.getElements()) {
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50 newValue.addCompositionListener(this);
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55 public void onElementAdded(IDiagram d, IElement e) {
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60 public void onElementRemoved(IDiagram d, IElement e) {
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64 private void addElement(IElement e) {
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65 e.addKeyHintListener(AbstractClickable.PRESS_STATUS_KEY, listener);
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68 private void removeElement(IElement e) {
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69 e.removeKeyHintListener(AbstractClickable.PRESS_STATUS_KEY, listener);
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74 class ElementHoverListener implements IHintListener {
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77 public void hintChanged(IHintObservable sender, Key key,
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78 Object oldValue, Object newValue) {
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79 IElement element = (IElement)sender;
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80 PressStatus status = (PressStatus)newValue;
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81 if (status == PressStatus.HOVER) {
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82 showTooltipFor(element);
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86 //System.out.println("ttp element changed " + element + " " + status);
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90 public void hintRemoved(IHintObservable sender, Key key, Object oldValue) {
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