org.simantics.district.region.ui/src/org/simantics/district/region/ui/handlers/ZoomToRegionHandler.java

   1 package org.simantics.district.region.ui.handlers;
   2
   3 import java.awt.Shape;
   4 import java.util.HashSet;
   5 import java.util.List;
   6 import java.util.Objects;
   7 import java.util.Set;
   8 import java.util.stream.Collectors;
   9
  10 import javax.inject.Named;
  11
  12 import org.eclipse.e4.core.di.annotations.CanExecute;
  13 import org.eclipse.e4.core.di.annotations.Execute;
  14 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  15 import org.eclipse.e4.ui.services.IServiceConstants;
  16 import org.eclipse.jface.viewers.ISelection;
  17 import org.eclipse.swt.widgets.Control;
  18 import org.eclipse.swt.widgets.Display;
  19 import org.eclipse.swt.widgets.Shell;
  20 import org.eclipse.ui.IEditorPart;
  21 import org.eclipse.ui.IWorkbenchPart;
  22 import org.simantics.Simantics;
  23 import org.simantics.db.ReadGraph;
  24 import org.simantics.db.Resource;
  25 import org.simantics.db.common.request.ReadRequest;
  26 import org.simantics.db.common.request.UniqueRead;
  27 import org.simantics.db.exception.DatabaseException;
  28 import org.simantics.district.region.DiagramRegions;
  29 import org.simantics.district.region.DiagramRegions.DiagramRegion;
  30 import org.simantics.g2d.canvas.ICanvasContext;
  31 import org.simantics.g2d.diagram.IDiagram;
  32 import org.simantics.g2d.diagram.handler.PickRequest;
  33 import org.simantics.g2d.diagram.handler.impl.PickContextImpl;
  34 import org.simantics.g2d.element.ElementHints;
  35 import org.simantics.g2d.element.IElement;
  36 import org.simantics.modeling.actions.NavigateToTarget;
  37 import org.simantics.ui.workbench.action.DefaultActions;
  38 import org.simantics.utils.threads.ThreadUtils;
  39 import org.simantics.utils.ui.ISelectionUtils;
  40 import org.simantics.utils.ui.workbench.WorkbenchUtils;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 public class ZoomToRegionHandler {
  45
  46     private static final Logger LOGGER = LoggerFactory.getLogger(ZoomToRegionHandler.class);
  47     public static final String COMMAND_ID = "org.simantics.district.region.ui.commands.zoomToRegion";
  48     public static final String LABEL = "Zoom To Region";
  49
  50     @CanExecute
  51     public boolean canExecute() {
  52         return true;
  53     }
  54
  55     @Execute
  56     public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell activeShell,
  57             @Named(IServiceConstants.ACTIVE_PART) MPart part,
  58             @Named(IServiceConstants.ACTIVE_SELECTION) ISelection selection) {
  59         DiagramRegion region = ISelectionUtils.filterSingleSelection(selection, DiagramRegion.class);
  60         zoomTo((Control) part.getWidget(), activeShell.getDisplay(), region.getResource());
  61     }
  62
  63     public static void zoomTo(Control control, Display display, Resource region) {
  64         Resource dia;
  65         try {
  66             dia = Simantics.getSession().syncRequest(new UniqueRead<Resource>() {
  67
  68                 @Override
  69                 public Resource perform(ReadGraph graph) throws DatabaseException {
  70                     return DiagramRegions.getDiagramForRegion(graph, region);
  71                 }
  72             });
  73
  74             // get currentyl active workbench part
  75             IWorkbenchPart beforePerformingDefaultAction = WorkbenchUtils.getActiveWorkbenchPart();
  76             IEditorPart activeEditor = WorkbenchUtils.getActiveEditor();
  77             LOGGER.info("activeWorkbenchPart {}", beforePerformingDefaultAction);
  78             LOGGER.info("activeEditor {}", activeEditor);
  79             DefaultActions.performDefaultAction(control, dia);
  80             Simantics.getSession().asyncRequest(new ReadRequest() {
  81
  82                 @Override
  83                 public void run(ReadGraph graph) throws DatabaseException {
  84                     Shape shp = DiagramRegions.coordinatesToShape(graph, region);
  85                     display.asyncExec(() -> {
  86                         IWorkbenchPart afterPerformingDefaultAction = WorkbenchUtils.getActiveWorkbenchPart();
  87                         LOGGER.info("afterActiveWorkbenchPart {}", afterPerformingDefaultAction);
  88                         int tries = 0;
  89                         while (Objects.equals(beforePerformingDefaultAction, afterPerformingDefaultAction) && tries <= 10) {
  90                             try {
  91                                 Thread.sleep(150);
  92                             } catch (InterruptedException e) {
  93                                 LOGGER.error("Could not sleep", e);
  94                             }
  95                             afterPerformingDefaultAction = WorkbenchUtils.getActiveEditor();
  96                             LOGGER.info("afterActiveWorkbenchPart {}", afterPerformingDefaultAction);
  97                             tries++;
  98                         }
  99                         LOGGER.info("afterActiveWorkbenchPart {}", afterPerformingDefaultAction);
 100                         if (beforePerformingDefaultAction.equals(afterPerformingDefaultAction)) {
 101                             LOGGER.warn("No can do");
 102                         } else if (afterPerformingDefaultAction != null) {
 103                             // Okay, get the IDiagram now
 104                             IDiagram diagram = afterPerformingDefaultAction.getAdapter(IDiagram.class);
 105                             if (diagram == null)
 106                                 LOGGER.warn("No can do - no IDiagram available");
 107                             else {
 108                                 Set<IElement> elems = new HashSet<>();
 109                                 PickContextImpl.INSTANCE.pick(diagram, new PickRequest(shp), elems);
 110                                 ICanvasContext context = afterPerformingDefaultAction.getAdapter(ICanvasContext.class);
 111                                 List<Object> collect = elems.stream().map(el -> el.getHint(ElementHints.KEY_OBJECT)).collect(Collectors.toList());
 112                                 ThreadUtils.asyncExec(context.getThreadAccess(), NavigateToTarget.elementSelectorZoomer(context, collect, false));
 113                             }
 114                         } else {
 115                             LOGGER.info("afterPerforming is null");
 116                         }
 117                     });
 118                 }
 119             });
 120         } catch (DatabaseException e) {
 121             LOGGER.error("Could not zoom to region", e);
 122         }
 123     }
 124 }