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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.modeling.ui.diagramEditor.handlers.e4;\r
  13 \r
  14 import java.awt.Shape;\r
  15 import java.awt.geom.AffineTransform;\r
  16 import java.awt.geom.Rectangle2D;\r
  17 import java.util.Collection;\r
  18 import java.util.HashSet;\r
  19 import java.util.Set;\r
  20 import java.util.function.Consumer;\r
  21 \r
  22 import org.eclipse.e4.ui.model.application.ui.basic.MPart;\r
  23 import org.simantics.db.ReadGraph;\r
  24 import org.simantics.db.Resource;\r
  25 import org.simantics.db.common.ResourceArray;\r
  26 import org.simantics.db.common.request.ReadRequest;\r
  27 import org.simantics.db.common.utils.OrderedSetUtils;\r
  28 import org.simantics.db.exception.DatabaseException;\r
  29 import org.simantics.db.management.ISessionContext;\r
  30 import org.simantics.diagram.stubs.DiagramResource;\r
  31 import org.simantics.g2d.canvas.ICanvasContext;\r
  32 import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;\r
  33 import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;\r
  34 import org.simantics.g2d.diagram.DiagramHints;\r
  35 import org.simantics.g2d.diagram.IDiagram;\r
  36 import org.simantics.g2d.diagram.handler.DataElementMap;\r
  37 import org.simantics.g2d.diagram.participant.Selection;\r
  38 import org.simantics.g2d.element.ElementHints;\r
  39 import org.simantics.g2d.element.ElementUtils;\r
  40 import org.simantics.g2d.element.IElement;\r
  41 import org.simantics.g2d.participant.CanvasBoundsParticipant;\r
  42 import org.simantics.g2d.participant.TransformUtil;\r
  43 import org.simantics.g2d.utils.GeometryUtils;\r
  44 import org.simantics.modeling.ModelingResources;\r
  45 import org.simantics.modeling.ui.diagramEditor.e4.DiagramViewer;\r
  46 import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;\r
  47 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseDoubleClickedEvent;\r
  48 import org.simantics.structural.stubs.StructuralResource2;\r
  49 import org.simantics.ui.workbench.e4.E4WorkbenchUtils;\r
  50 import org.simantics.utils.page.MarginUtils;\r
  51 import org.simantics.utils.threads.ThreadUtils;\r
  52 import org.simantics.utils.ui.ErrorLogger;\r
  53 \r
  54 /**\r
  55  * StructuralBrowsingHandler supports visual browsing into subcomponents through\r
  56  * mouse events.\r
  57  * \r
  58  * @author Tuukka Lehtonen\r
  59  */\r
  60 public class LinkBrowsingHandler extends AbstractCanvasParticipant {\r
  61 \r
  62     @Dependency\r
  63     CanvasBoundsParticipant canvasBounds;\r
  64     @Dependency\r
  65     Selection               selection;\r
  66 \r
  67     DiagramViewer           viewer;\r
  68     ISessionContext         sessionContext;\r
  69 \r
  70     public LinkBrowsingHandler(DiagramViewer viewer, ISessionContext context) {\r
  71 \r
  72 //              System.out.println("LinkBrowsingHandler " + viewer + " " + viewer.structuralPath);\r
  73 \r
  74         this.viewer = viewer;\r
  75         this.sessionContext = context;\r
  76 \r
  77     }\r
  78 \r
  79     public static Runnable editorActivator(final MPart part, final ResourceArray input, final Consumer<MPart> successCallback) {\r
  80         String sourcePartId = part.getElementId();\r
  81         return editorActivator(sourcePartId, input, successCallback);\r
  82     }\r
  83 \r
  84     public Runnable elementSelectorZoomer(final ICanvasContext canvas, final Collection<Object> elementObjects, final boolean keepZoom) {\r
  85         return new Runnable() {\r
  86             @Override\r
  87             public void run() {\r
  88                 IDiagram diagram = canvas.getHintStack().getHint(DiagramHints.KEY_DIAGRAM);\r
  89                 assert diagram != null;\r
  90                 if (!zoomToSelection(canvas, diagram, selectElement(canvas, diagram, elementObjects), keepZoom)) {\r
  91                     // Reschedule for later.\r
  92                     ThreadUtils.asyncExec(canvas.getThreadAccess(), this);\r
  93                 }\r
  94             }\r
  95         };\r
  96     }\r
  97 \r
  98     public static Set<IElement> selectElement(final ICanvasContext canvas, final IDiagram diagram, final Collection<Object> elementObjects) {\r
  99         // Select element\r
 100         Set<IElement> selection = new HashSet<IElement>();\r
 101         DataElementMap dataMap = diagram.getDiagramClass().getSingleItem(DataElementMap.class);\r
 102         for (Object obj : elementObjects) {\r
 103             IElement element = dataMap.getElement(diagram, obj);\r
 104             if (element == null) {\r
 105                 ErrorLogger.defaultLogWarning("No element to select for object " + obj, new Exception());\r
 106             } else {\r
 107                 selection.add(element);\r
 108             }\r
 109         }\r
 110         for (Selection s : canvas.getItemsByClass(Selection.class)) {\r
 111             s.setSelection(0, selection);\r
 112         }\r
 113         return selection;\r
 114     }\r
 115 \r
 116     public boolean zoomToSelection(final ICanvasContext canvas, final IDiagram diagram, Set<IElement> selection, boolean keepZoom) {\r
 117         TransformUtil util = canvas.getSingleItem(TransformUtil.class);\r
 118         Rectangle2D controlBounds = canvasBounds.getControlBounds();\r
 119         if (controlBounds == null)\r
 120             return false;\r
 121 \r
 122         Shape shp = ElementUtils.getElementBoundsOnDiagram(selection);\r
 123         if (shp == null)\r
 124             return false;\r
 125 \r
 126         Rectangle2D diagramRect = shp.getBounds2D();\r
 127         if (keepZoom) {\r
 128             double scaleFactor = GeometryUtils.getScale(util.getTransform());\r
 129             double cwh = controlBounds.getWidth() / (scaleFactor*2);\r
 130             double chh = controlBounds.getHeight() / (scaleFactor*2);\r
 131 \r
 132             AffineTransform view = new AffineTransform();\r
 133             view.scale(scaleFactor, scaleFactor);\r
 134             view.translate(-diagramRect.getCenterX()+cwh, -diagramRect.getCenterY()+chh);\r
 135 \r
 136             util.setTransform(view);\r
 137         } else {\r
 138             MarginUtils.Margin margin = MarginUtils.marginOf(40, 0, 0);\r
 139             MarginUtils.Margins margins = new MarginUtils.Margins(margin, margin, margin, margin);\r
 140             util.fitArea(controlBounds, diagramRect, margins);\r
 141         }\r
 142         return true;\r
 143     }\r
 144 \r
 145     public static Runnable editorActivator(final String editorPartId, final ResourceArray input, final Consumer<MPart> successCallback) {\r
 146         return new Runnable() {\r
 147             @Override\r
 148             public void run() {\r
 149                 // open and activate new editor\r
 150                 MPart part = E4WorkbenchUtils.openEditor(editorPartId, "", "", input.get(0));\r
 151                 E4WorkbenchUtils.activatePart(part);\r
 152                 successCallback.accept(part);\r
 153             }\r
 154         };\r
 155     }\r
 156 \r
 157     public static Resource getOwnerList(ReadGraph g, Resource listElement) throws DatabaseException {\r
 158         return OrderedSetUtils.getSingleOwnerList(g, listElement, DiagramResource.getInstance(g).Composite);\r
 159     }\r
 160 \r
 161     @EventHandler(priority = 0)\r
 162     public boolean handleDoubleClick(MouseDoubleClickedEvent me) {\r
 163 \r
 164         //System.out.println("LinkBrowsingHandler");\r
 165 \r
 166         if (sessionContext == null)\r
 167             return false;\r
 168 \r
 169         Set<IElement> sel = selection.getSelection(0);\r
 170 \r
 171         if (sel.size() == 1) {\r
 172             IElement e = sel.iterator().next();\r
 173             Object data = e.getHint(ElementHints.KEY_OBJECT);\r
 174             if (data instanceof Resource) {\r
 175                 final Resource element = (Resource) data;\r
 176                 sessionContext.getSession().asyncRequest(new ReadRequest() {\r
 177                     @Override\r
 178                     public void run(ReadGraph graph) throws DatabaseException {\r
 179 \r
 180                         //System.out.println("LinkBrowsingHandler0");\r
 181 \r
 182                         ModelingResources mr = ModelingResources.getInstance(graph);\r
 183                         DiagramResource dr = DiagramResource.getInstance(graph);\r
 184                         StructuralResource2 sr = StructuralResource2.getInstance(graph);\r
 185 \r
 186                         if (graph.isInstanceOf(element, dr.UpwardLink)) {\r
 187 \r
 188 //                            Resource component = viewer.structuralPath.resources[0];\r
 189 //                            Resource element = graph.getPossibleObject(component, mr.ComponentToElement);\r
 190 //                            Resource diagram = getOwnerList(graph, element);\r
 191 //\r
 192 //                            IEditorPart thisEditor = (IEditorPart) site.getPart();\r
 193 //                            site.getWorkbenchWindow().getShell().getDisplay().asyncExec(\r
 194 //                                    editorActivator(thisEditor, viewer.structuralPath.removeFromBeginning(1).prepended(diagram), new Callback<IEditorPart>() {\r
 195 //                                        @Override\r
 196 //                                        public void run(IEditorPart part) {\r
 197 //                                        }\r
 198 //                                    }));\r
 199 \r
 200                         } else if (graph.isInstanceOf(element, dr.Link)) {\r
 201 \r
 202                             //System.out.println("LinkBrowsingHandler2");\r
 203 \r
 204 //                                                      ContextMap parameters = new ContextMap();\r
 205 //                                                      parameters.put(ModelingOperationConstants.WORKBENCH_WINDOW, site.getWorkbenchWindow());\r
 206 //                                                      parameters.put(ModelingOperationConstants.WORKBENCH_PART, site.getPart());\r
 207 //                                                      parameters.put(IOperation.SUBJECT, element);\r
 208 \r
 209                             Resource thisDiagram = getOwnerList(graph, element);\r
 210                             if (thisDiagram == null) return;\r
 211 \r
 212                             final Resource target = graph.getPossibleObject(element, dr.HasLinkTarget);\r
 213                             if (target == null) return;\r
 214 \r
 215                             final Resource otherDiagram = getOwnerList(graph, target);\r
 216                             if (otherDiagram == null)\r
 217                                 return;\r
 218 \r
 219                             final Resource component = graph.getPossibleObject(target, mr.ElementToComponent);\r
 220                             if (component == null)\r
 221                                 return;\r
 222 \r
 223                             Resource type = graph.getSingleType(component, sr.Component);\r
 224                             if (type == null)\r
 225                                 return;\r
 226 \r
 227                             Resource definedBy = graph.getPossibleObject(type, sr.IsDefinedBy);\r
 228                             if (definedBy == null)\r
 229                                 return;\r
 230 \r
 231                             final Resource diagram = graph.getPossibleObject(definedBy, mr.CompositeToDiagram);\r
 232                             if (diagram == null)\r
 233                                 return;\r
 234 \r
 235 //                              PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {\r
 236 //                                  @Override\r
 237 //                                  public void run() {\r
 238 //                                      try {\r
 239 //                                          WorkbenchUtils.openEditor(site.getId(), new ResourceEditorInput(site.getId(), parentStructuralPath.prepended(diagram, component)));\r
 240 //                                      } catch (PartInitException e) {\r
 241 //                                          // TODO Auto-generated catch block\r
 242 //                                          e.printStackTrace();\r
 243 //                                      }\r
 244 //                                  }\r
 245 //                              });\r
 246 \r
 247 //                            IEditorPart thisEditor = (IEditorPart) site.getPart();\r
 248 //                            ResourceArray input = viewer.structuralPath.prepended(diagram, component);\r
 249 //                            System.out.println("Browsing link " + input);\r
 250 //                            site.getWorkbenchWindow().getShell().getDisplay().asyncExec(\r
 251 //                                    editorActivator(thisEditor, input, new Callback<IEditorPart>() {\r
 252 //                                        @Override\r
 253 //                                        public void run(IEditorPart part) {\r
 254 ////                                                                                    final ICanvasContext openedCanvas = (ICanvasContext) part.getAdapter(ICanvasContext.class);\r
 255 ////                                                                                    assert openedCanvas != null;\r
 256 ////                                                                                    IDiagram diagram = (IDiagram) part.getAdapter(IDiagram.class);\r
 257 ////                                                                                    assert diagram != null;\r
 258 //                                            // Disable automatic-zoom-to-fit\r
 259 ////                                                                                    diagram.removeHint(DiagramHints.KEY_INITIAL_ZOOM_TO_FIT);\r
 260 ////                                                                                    ThreadUtils.asyncExec(openedCanvas.getThreadAccess(),\r
 261 ////                                                                                                    elementSelectorZoomer(openedCanvas, Collections.singleton((Object) target), false));\r
 262 //                                        }\r
 263 //                                    }));\r
 264 \r
 265 \r
 266 \r
 267 //                                                      System.out.println("LinkBrowsingHandler3");\r
 268 //\r
 269 //                                                      if (!thisDiagram.equals(otherDiagram)) {\r
 270 //\r
 271 //                                                              System.out.println("LinkBrowsingHandler4");\r
 272 //\r
 273 //                                                              // Find the structural path\r
 274 //                                                              Resource ownerComposite = graph.getPossibleObject(otherDiagram, mr.DiagramToComposite);\r
 275 //                                                              if (ownerComposite == null)\r
 276 //                                                                      return;\r
 277 //\r
 278 //                                                              Collection<ResourceArray> inputs = ComponentUtils.formInputs(graph, ownerComposite);\r
 279 //\r
 280 //\r
 281 //                                                              for (final ResourceArray input : inputs) {\r
 282 //                                                              }\r
 283 //                                                      }\r
 284 //                                                      return;\r
 285 \r
 286                         }\r
 287 \r
 288                         return;\r
 289 \r
 290                     }\r
 291 \r
 292                 });\r
 293 \r
 294 \r
 295             }\r
 296 \r
 297         }\r
 298         return false;\r
 299     }\r
 300 \r
 301 }