bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/handlers/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;
  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.ui.IEditorPart;
  23 import org.eclipse.ui.IWorkbenchPartSite;
  24 import org.eclipse.ui.PartInitException;
  25 import org.simantics.db.ReadGraph;
  26 import org.simantics.db.Resource;
  27 import org.simantics.db.common.ResourceArray;
  28 import org.simantics.db.common.request.ReadRequest;
  29 import org.simantics.db.common.utils.OrderedSetUtils;
  30 import org.simantics.db.exception.DatabaseException;
  31 import org.simantics.db.management.ISessionContext;
  32 import org.simantics.diagram.stubs.DiagramResource;
  33 import org.simantics.g2d.canvas.ICanvasContext;
  34 import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;
  35 import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;
  36 import org.simantics.g2d.diagram.DiagramHints;
  37 import org.simantics.g2d.diagram.IDiagram;
  38 import org.simantics.g2d.diagram.handler.DataElementMap;
  39 import org.simantics.g2d.diagram.participant.Selection;
  40 import org.simantics.g2d.element.ElementHints;
  41 import org.simantics.g2d.element.ElementUtils;
  42 import org.simantics.g2d.element.IElement;
  43 import org.simantics.g2d.participant.CanvasBoundsParticipant;
  44 import org.simantics.g2d.participant.TransformUtil;
  45 import org.simantics.g2d.utils.GeometryUtils;
  46 import org.simantics.modeling.ModelingResources;
  47 import org.simantics.modeling.ui.diagramEditor.DiagramViewer;
  48 import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;
  49 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseDoubleClickedEvent;
  50 import org.simantics.structural.stubs.StructuralResource2;
  51 import org.simantics.ui.workbench.ResourceEditorInput;
  52 import org.simantics.utils.page.MarginUtils;
  53 import org.simantics.utils.threads.ThreadUtils;
  54 import org.simantics.utils.ui.ErrorLogger;
  55 import org.simantics.utils.ui.workbench.WorkbenchUtils;
  56
  57 /**
  58  * StructuralBrowsingHandler supports visual browsing into subcomponents through
  59  * mouse events.
  60  *
  61  * @author Tuukka Lehtonen
  62  */
  63 public class LinkBrowsingHandler extends AbstractCanvasParticipant {
  64
  65     @Dependency
  66     CanvasBoundsParticipant canvasBounds;
  67     @Dependency
  68     Selection               selection;
  69
  70     IWorkbenchPartSite      site;
  71     DiagramViewer           viewer;
  72     ISessionContext         sessionContext;
  73
  74     public LinkBrowsingHandler(IWorkbenchPartSite site, DiagramViewer viewer, ISessionContext context) {
  75
  76         assert site != null;
  77
  78 //              System.out.println("LinkBrowsingHandler " + viewer + " " + viewer.structuralPath);
  79
  80         this.site = site;
  81         this.viewer = viewer;
  82         this.sessionContext = context;
  83
  84     }
  85
  86     public static Runnable editorActivator(final IEditorPart part, final ResourceArray input, final Consumer<IEditorPart> successCallback) {
  87         String sourcePartId = part.getSite().getId();
  88         return editorActivator(sourcePartId, input, successCallback);
  89     }
  90
  91     public Runnable elementSelectorZoomer(final ICanvasContext canvas, final Collection<Object> elementObjects, final boolean keepZoom) {
  92         return new Runnable() {
  93             @Override
  94             public void run() {
  95                 IDiagram diagram = canvas.getHintStack().getHint(DiagramHints.KEY_DIAGRAM);
  96                 assert diagram != null;
  97                 if (!zoomToSelection(canvas, diagram, selectElement(canvas, diagram, elementObjects), keepZoom)) {
  98                     // Reschedule for later.
  99                     ThreadUtils.asyncExec(canvas.getThreadAccess(), this);
 100                 }
 101             }
 102         };
 103     }
 104
 105     public static Set<IElement> selectElement(final ICanvasContext canvas, final IDiagram diagram, final Collection<Object> elementObjects) {
 106         // Select element
 107         Set<IElement> selection = new HashSet<IElement>();
 108         DataElementMap dataMap = diagram.getDiagramClass().getSingleItem(DataElementMap.class);
 109         for (Object obj : elementObjects) {
 110             IElement element = dataMap.getElement(diagram, obj);
 111             if (element == null) {
 112                 ErrorLogger.defaultLogWarning("No element to select for object " + obj, new Exception());
 113             } else {
 114                 selection.add(element);
 115             }
 116         }
 117         for (Selection s : canvas.getItemsByClass(Selection.class)) {
 118             s.setSelection(0, selection);
 119         }
 120         return selection;
 121     }
 122
 123     public boolean zoomToSelection(final ICanvasContext canvas, final IDiagram diagram, Set<IElement> selection, boolean keepZoom) {
 124         TransformUtil util = canvas.getSingleItem(TransformUtil.class);
 125         Rectangle2D controlBounds = canvasBounds.getControlBounds();
 126         if (controlBounds == null)
 127             return false;
 128
 129         Shape shp = ElementUtils.getElementBoundsOnDiagram(selection);
 130         if (shp == null)
 131             return false;
 132
 133         Rectangle2D diagramRect = shp.getBounds2D();
 134         if (keepZoom) {
 135             double scaleFactor = GeometryUtils.getScale(util.getTransform());
 136             double cwh = controlBounds.getWidth() / (scaleFactor*2);
 137             double chh = controlBounds.getHeight() / (scaleFactor*2);
 138
 139             AffineTransform view = new AffineTransform();
 140             view.scale(scaleFactor, scaleFactor);
 141             view.translate(-diagramRect.getCenterX()+cwh, -diagramRect.getCenterY()+chh);
 142
 143             util.setTransform(view);
 144         } else {
 145             MarginUtils.Margin margin = MarginUtils.marginOf(40, 0, 0);
 146             MarginUtils.Margins margins = new MarginUtils.Margins(margin, margin, margin, margin);
 147             util.fitArea(controlBounds, diagramRect, margins);
 148         }
 149         return true;
 150     }
 151
 152     public static Runnable editorActivator(String editorPartId, ResourceArray input, Consumer<IEditorPart> successCallback) {
 153         return new Runnable() {
 154             @Override
 155             public void run() {
 156                 try {
 157                     // open and activate new editor
 158                     IEditorPart newPart = WorkbenchUtils.openEditor(editorPartId, new ResourceEditorInput(editorPartId, input));
 159                     newPart.getSite().getPage().activate(newPart);
 160                     successCallback.accept(newPart);
 161                 } catch (PartInitException e) {
 162                     // TODO: handle properly
 163                     e.printStackTrace();
 164                 }
 165             }
 166         };
 167     }
 168
 169     public static Resource getOwnerList(ReadGraph g, Resource listElement) throws DatabaseException {
 170         return OrderedSetUtils.getSingleOwnerList(g, listElement, DiagramResource.getInstance(g).Composite);
 171     }
 172
 173     @EventHandler(priority = 0)
 174     public boolean handleDoubleClick(MouseDoubleClickedEvent me) {
 175
 176         //System.out.println("LinkBrowsingHandler");
 177
 178         if (sessionContext == null)
 179             return false;
 180
 181         Set<IElement> sel = selection.getSelection(0);
 182
 183         if (sel.size() == 1) {
 184             IElement e = sel.iterator().next();
 185             Object data = e.getHint(ElementHints.KEY_OBJECT);
 186             if (data instanceof Resource) {
 187                 final Resource element = (Resource) data;
 188                 sessionContext.getSession().asyncRequest(new ReadRequest() {
 189                     @Override
 190                     public void run(ReadGraph graph) throws DatabaseException {
 191
 192                         //System.out.println("LinkBrowsingHandler0");
 193
 194                         ModelingResources mr = ModelingResources.getInstance(graph);
 195                         DiagramResource dr = DiagramResource.getInstance(graph);
 196                         StructuralResource2 sr = StructuralResource2.getInstance(graph);
 197
 198                         if (graph.isInstanceOf(element, dr.UpwardLink)) {
 199
 200 //                            Resource component = viewer.structuralPath.resources[0];
 201 //                            Resource element = graph.getPossibleObject(component, mr.ComponentToElement);
 202 //                            Resource diagram = getOwnerList(graph, element);
 203 //
 204 //                            IEditorPart thisEditor = (IEditorPart) site.getPart();
 205 //                            site.getWorkbenchWindow().getShell().getDisplay().asyncExec(
 206 //                                    editorActivator(thisEditor, viewer.structuralPath.removeFromBeginning(1).prepended(diagram), new Callback<IEditorPart>() {
 207 //                                        @Override
 208 //                                        public void run(IEditorPart part) {
 209 //                                        }
 210 //                                    }));
 211
 212                         } else if (graph.isInstanceOf(element, dr.Link)) {
 213
 214                             //System.out.println("LinkBrowsingHandler2");
 215
 216 //                                                      ContextMap parameters = new ContextMap();
 217 //                                                      parameters.put(ModelingOperationConstants.WORKBENCH_WINDOW, site.getWorkbenchWindow());
 218 //                                                      parameters.put(ModelingOperationConstants.WORKBENCH_PART, site.getPart());
 219 //                                                      parameters.put(IOperation.SUBJECT, element);
 220
 221                             Resource thisDiagram = getOwnerList(graph, element);
 222                             if (thisDiagram == null) return;
 223
 224                             final Resource target = graph.getPossibleObject(element, dr.HasLinkTarget);
 225                             if (target == null) return;
 226
 227                             final Resource otherDiagram = getOwnerList(graph, target);
 228                             if (otherDiagram == null)
 229                                 return;
 230
 231                             final Resource component = graph.getPossibleObject(target, mr.ElementToComponent);
 232                             if (component == null)
 233                                 return;
 234
 235                             Resource type = graph.getSingleType(component, sr.Component);
 236                             if (type == null)
 237                                 return;
 238
 239                             Resource definedBy = graph.getPossibleObject(type, sr.IsDefinedBy);
 240                             if (definedBy == null)
 241                                 return;
 242
 243                             final Resource diagram = graph.getPossibleObject(definedBy, mr.CompositeToDiagram);
 244                             if (diagram == null)
 245                                 return;
 246
 247 //                              PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {
 248 //                                  @Override
 249 //                                  public void run() {
 250 //                                      try {
 251 //                                          WorkbenchUtils.openEditor(site.getId(), new ResourceEditorInput(site.getId(), parentStructuralPath.prepended(diagram, component)));
 252 //                                      } catch (PartInitException e) {
 253 //                                          // TODO Auto-generated catch block
 254 //                                          e.printStackTrace();
 255 //                                      }
 256 //                                  }
 257 //                              });
 258
 259 //                            IEditorPart thisEditor = (IEditorPart) site.getPart();
 260 //                            ResourceArray input = viewer.structuralPath.prepended(diagram, component);
 261 //                            System.out.println("Browsing link " + input);
 262 //                            site.getWorkbenchWindow().getShell().getDisplay().asyncExec(
 263 //                                    editorActivator(thisEditor, input, new Callback<IEditorPart>() {
 264 //                                        @Override
 265 //                                        public void run(IEditorPart part) {
 266 ////                                                                                    final ICanvasContext openedCanvas = (ICanvasContext) part.getAdapter(ICanvasContext.class);
 267 ////                                                                                    assert openedCanvas != null;
 268 ////                                                                                    IDiagram diagram = (IDiagram) part.getAdapter(IDiagram.class);
 269 ////                                                                                    assert diagram != null;
 270 //                                            // Disable automatic-zoom-to-fit
 271 ////                                                                                    diagram.removeHint(DiagramHints.KEY_INITIAL_ZOOM_TO_FIT);
 272 ////                                                                                    ThreadUtils.asyncExec(openedCanvas.getThreadAccess(),
 273 ////                                                                                                    elementSelectorZoomer(openedCanvas, Collections.singleton((Object) target), false));
 274 //                                        }
 275 //                                    }));
 276
 277
 278
 279 //                                                      System.out.println("LinkBrowsingHandler3");
 280 //
 281 //                                                      if (!thisDiagram.equals(otherDiagram)) {
 282 //
 283 //                                                              System.out.println("LinkBrowsingHandler4");
 284 //
 285 //                                                              // Find the structural path
 286 //                                                              Resource ownerComposite = graph.getPossibleObject(otherDiagram, mr.DiagramToComposite);
 287 //                                                              if (ownerComposite == null)
 288 //                                                                      return;
 289 //
 290 //                                                              Collection<ResourceArray> inputs = ComponentUtils.formInputs(graph, ownerComposite);
 291 //
 292 //
 293 //                                                              for (final ResourceArray input : inputs) {
 294 //                                                              }
 295 //                                                      }
 296 //                                                      return;
 297
 298                         }
 299
 300                         return;
 301
 302                     }
 303
 304                 });
 305
 306
 307             }
 308
 309         }
 310         return false;
 311     }
 312
 313 }