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

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in 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  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.modeling.ui.diagramEditor.handlers.e4;
  13
  14 import java.awt.Shape;
  15 import java.awt.geom.AffineTransform;
  16 import java.awt.geom.Rectangle2D;
  17 import java.util.Collection;
  18 import java.util.HashSet;
  19 import java.util.Set;
  20 import java.util.function.Consumer;
  21
  22 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  23 import org.simantics.db.ReadGraph;
  24 import org.simantics.db.Resource;
  25 import org.simantics.db.common.ResourceArray;
  26 import org.simantics.db.common.request.ReadRequest;
  27 import org.simantics.db.common.utils.OrderedSetUtils;
  28 import org.simantics.db.exception.DatabaseException;
  29 import org.simantics.db.management.ISessionContext;
  30 import org.simantics.diagram.stubs.DiagramResource;
  31 import org.simantics.g2d.canvas.ICanvasContext;
  32 import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;
  33 import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;
  34 import org.simantics.g2d.diagram.DiagramHints;
  35 import org.simantics.g2d.diagram.IDiagram;
  36 import org.simantics.g2d.diagram.handler.DataElementMap;
  37 import org.simantics.g2d.diagram.participant.Selection;
  38 import org.simantics.g2d.element.ElementHints;
  39 import org.simantics.g2d.element.ElementUtils;
  40 import org.simantics.g2d.element.IElement;
  41 import org.simantics.g2d.participant.CanvasBoundsParticipant;
  42 import org.simantics.g2d.participant.TransformUtil;
  43 import org.simantics.g2d.utils.GeometryUtils;
  44 import org.simantics.modeling.ModelingResources;
  45 import org.simantics.modeling.ui.diagramEditor.e4.DiagramViewer;
  46 import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;
  47 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseDoubleClickedEvent;
  48 import org.simantics.structural.stubs.StructuralResource2;
  49 import org.simantics.ui.workbench.e4.E4WorkbenchUtils;
  50 import org.simantics.utils.page.MarginUtils;
  51 import org.simantics.utils.threads.ThreadUtils;
  52 import org.simantics.utils.ui.ErrorLogger;
  53
  54 /**
  55  * StructuralBrowsingHandler supports visual browsing into subcomponents through
  56  * mouse events.
  57  *
  58  * @author Tuukka Lehtonen
  59  */
  60 public class LinkBrowsingHandler extends AbstractCanvasParticipant {
  61
  62     @Dependency
  63     CanvasBoundsParticipant canvasBounds;
  64     @Dependency
  65     Selection               selection;
  66
  67     DiagramViewer           viewer;
  68     ISessionContext         sessionContext;
  69
  70     public LinkBrowsingHandler(DiagramViewer viewer, ISessionContext context) {
  71
  72 //              System.out.println("LinkBrowsingHandler " + viewer + " " + viewer.structuralPath);
  73
  74         this.viewer = viewer;
  75         this.sessionContext = context;
  76
  77     }
  78
  79     public static Runnable editorActivator(final MPart part, final ResourceArray input, final Consumer<MPart> successCallback) {
  80         String sourcePartId = part.getElementId();
  81         return editorActivator(sourcePartId, input, successCallback);
  82     }
  83
  84     public Runnable elementSelectorZoomer(final ICanvasContext canvas, final Collection<Object> elementObjects, final boolean keepZoom) {
  85         return new Runnable() {
  86             @Override
  87             public void run() {
  88                 IDiagram diagram = canvas.getHintStack().getHint(DiagramHints.KEY_DIAGRAM);
  89                 assert diagram != null;
  90                 if (!zoomToSelection(canvas, diagram, selectElement(canvas, diagram, elementObjects), keepZoom)) {
  91                     // Reschedule for later.
  92                     ThreadUtils.asyncExec(canvas.getThreadAccess(), this);
  93                 }
  94             }
  95         };
  96     }
  97
  98     public static Set<IElement> selectElement(final ICanvasContext canvas, final IDiagram diagram, final Collection<Object> elementObjects) {
  99         // Select element
 100         Set<IElement> selection = new HashSet<IElement>();
 101         DataElementMap dataMap = diagram.getDiagramClass().getSingleItem(DataElementMap.class);
 102         for (Object obj : elementObjects) {
 103             IElement element = dataMap.getElement(diagram, obj);
 104             if (element == null) {
 105                 ErrorLogger.defaultLogWarning("No element to select for object " + obj, new Exception());
 106             } else {
 107                 selection.add(element);
 108             }
 109         }
 110         for (Selection s : canvas.getItemsByClass(Selection.class)) {
 111             s.setSelection(0, selection);
 112         }
 113         return selection;
 114     }
 115
 116     public boolean zoomToSelection(final ICanvasContext canvas, final IDiagram diagram, Set<IElement> selection, boolean keepZoom) {
 117         TransformUtil util = canvas.getSingleItem(TransformUtil.class);
 118         Rectangle2D controlBounds = canvasBounds.getControlBounds();
 119         if (controlBounds == null)
 120             return false;
 121
 122         Shape shp = ElementUtils.getElementBoundsOnDiagram(selection);
 123         if (shp == null)
 124             return false;
 125
 126         Rectangle2D diagramRect = shp.getBounds2D();
 127         if (keepZoom) {
 128             double scaleFactor = GeometryUtils.getScale(util.getTransform());
 129             double cwh = controlBounds.getWidth() / (scaleFactor*2);
 130             double chh = controlBounds.getHeight() / (scaleFactor*2);
 131
 132             AffineTransform view = new AffineTransform();
 133             view.scale(scaleFactor, scaleFactor);
 134             view.translate(-diagramRect.getCenterX()+cwh, -diagramRect.getCenterY()+chh);
 135
 136             util.setTransform(view);
 137         } else {
 138             MarginUtils.Margin margin = MarginUtils.marginOf(40, 0, 0);
 139             MarginUtils.Margins margins = new MarginUtils.Margins(margin, margin, margin, margin);
 140             util.fitArea(controlBounds, diagramRect, margins);
 141         }
 142         return true;
 143     }
 144
 145     public static Runnable editorActivator(final String editorPartId, final ResourceArray input, final Consumer<MPart> successCallback) {
 146         return new Runnable() {
 147             @Override
 148             public void run() {
 149                 // open and activate new editor
 150                 MPart part = E4WorkbenchUtils.openEditor(editorPartId, "", "", input.get(0));
 151                 E4WorkbenchUtils.activatePart(part);
 152                 successCallback.accept(part);
 153             }
 154         };
 155     }
 156
 157     public static Resource getOwnerList(ReadGraph g, Resource listElement) throws DatabaseException {
 158         return OrderedSetUtils.getSingleOwnerList(g, listElement, DiagramResource.getInstance(g).Composite);
 159     }
 160
 161     @EventHandler(priority = 0)
 162     public boolean handleDoubleClick(MouseDoubleClickedEvent me) {
 163
 164         //System.out.println("LinkBrowsingHandler");
 165
 166         if (sessionContext == null)
 167             return false;
 168
 169         Set<IElement> sel = selection.getSelection(0);
 170
 171         if (sel.size() == 1) {
 172             IElement e = sel.iterator().next();
 173             Object data = e.getHint(ElementHints.KEY_OBJECT);
 174             if (data instanceof Resource) {
 175                 final Resource element = (Resource) data;
 176                 sessionContext.getSession().asyncRequest(new ReadRequest() {
 177                     @Override
 178                     public void run(ReadGraph graph) throws DatabaseException {
 179
 180                         //System.out.println("LinkBrowsingHandler0");
 181
 182                         ModelingResources mr = ModelingResources.getInstance(graph);
 183                         DiagramResource dr = DiagramResource.getInstance(graph);
 184                         StructuralResource2 sr = StructuralResource2.getInstance(graph);
 185
 186                         if (graph.isInstanceOf(element, dr.UpwardLink)) {
 187
 188 //                            Resource component = viewer.structuralPath.resources[0];
 189 //                            Resource element = graph.getPossibleObject(component, mr.ComponentToElement);
 190 //                            Resource diagram = getOwnerList(graph, element);
 191 //
 192 //                            IEditorPart thisEditor = (IEditorPart) site.getPart();
 193 //                            site.getWorkbenchWindow().getShell().getDisplay().asyncExec(
 194 //                                    editorActivator(thisEditor, viewer.structuralPath.removeFromBeginning(1).prepended(diagram), new Callback<IEditorPart>() {
 195 //                                        @Override
 196 //                                        public void run(IEditorPart part) {
 197 //                                        }
 198 //                                    }));
 199
 200                         } else if (graph.isInstanceOf(element, dr.Link)) {
 201
 202                             //System.out.println("LinkBrowsingHandler2");
 203
 204 //                                                      ContextMap parameters = new ContextMap();
 205 //                                                      parameters.put(ModelingOperationConstants.WORKBENCH_WINDOW, site.getWorkbenchWindow());
 206 //                                                      parameters.put(ModelingOperationConstants.WORKBENCH_PART, site.getPart());
 207 //                                                      parameters.put(IOperation.SUBJECT, element);
 208
 209                             Resource thisDiagram = getOwnerList(graph, element);
 210                             if (thisDiagram == null) return;
 211
 212                             final Resource target = graph.getPossibleObject(element, dr.HasLinkTarget);
 213                             if (target == null) return;
 214
 215                             final Resource otherDiagram = getOwnerList(graph, target);
 216                             if (otherDiagram == null)
 217                                 return;
 218
 219                             final Resource component = graph.getPossibleObject(target, mr.ElementToComponent);
 220                             if (component == null)
 221                                 return;
 222
 223                             Resource type = graph.getSingleType(component, sr.Component);
 224                             if (type == null)
 225                                 return;
 226
 227                             Resource definedBy = graph.getPossibleObject(type, sr.IsDefinedBy);
 228                             if (definedBy == null)
 229                                 return;
 230
 231                             final Resource diagram = graph.getPossibleObject(definedBy, mr.CompositeToDiagram);
 232                             if (diagram == null)
 233                                 return;
 234
 235 //                              PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {
 236 //                                  @Override
 237 //                                  public void run() {
 238 //                                      try {
 239 //                                          WorkbenchUtils.openEditor(site.getId(), new ResourceEditorInput(site.getId(), parentStructuralPath.prepended(diagram, component)));
 240 //                                      } catch (PartInitException e) {
 241 //                                          // TODO Auto-generated catch block
 242 //                                          e.printStackTrace();
 243 //                                      }
 244 //                                  }
 245 //                              });
 246
 247 //                            IEditorPart thisEditor = (IEditorPart) site.getPart();
 248 //                            ResourceArray input = viewer.structuralPath.prepended(diagram, component);
 249 //                            System.out.println("Browsing link " + input);
 250 //                            site.getWorkbenchWindow().getShell().getDisplay().asyncExec(
 251 //                                    editorActivator(thisEditor, input, new Callback<IEditorPart>() {
 252 //                                        @Override
 253 //                                        public void run(IEditorPart part) {
 254 ////                                                                                    final ICanvasContext openedCanvas = (ICanvasContext) part.getAdapter(ICanvasContext.class);
 255 ////                                                                                    assert openedCanvas != null;
 256 ////                                                                                    IDiagram diagram = (IDiagram) part.getAdapter(IDiagram.class);
 257 ////                                                                                    assert diagram != null;
 258 //                                            // Disable automatic-zoom-to-fit
 259 ////                                                                                    diagram.removeHint(DiagramHints.KEY_INITIAL_ZOOM_TO_FIT);
 260 ////                                                                                    ThreadUtils.asyncExec(openedCanvas.getThreadAccess(),
 261 ////                                                                                                    elementSelectorZoomer(openedCanvas, Collections.singleton((Object) target), false));
 262 //                                        }
 263 //                                    }));
 264
 265
 266
 267 //                                                      System.out.println("LinkBrowsingHandler3");
 268 //
 269 //                                                      if (!thisDiagram.equals(otherDiagram)) {
 270 //
 271 //                                                              System.out.println("LinkBrowsingHandler4");
 272 //
 273 //                                                              // Find the structural path
 274 //                                                              Resource ownerComposite = graph.getPossibleObject(otherDiagram, mr.DiagramToComposite);
 275 //                                                              if (ownerComposite == null)
 276 //                                                                      return;
 277 //
 278 //                                                              Collection<ResourceArray> inputs = ComponentUtils.formInputs(graph, ownerComposite);
 279 //
 280 //
 281 //                                                              for (final ResourceArray input : inputs) {
 282 //                                                              }
 283 //                                                      }
 284 //                                                      return;
 285
 286                         }
 287
 288                         return;
 289
 290                     }
 291
 292                 });
 293
 294
 295             }
 296
 297         }
 298         return false;
 299     }
 300
 301 }