org.simantics.district.network.ui/src/org/simantics/district/network/ui/contributions/ToggleSplitToMultipleDiagrams.java

   1 package org.simantics.district.network.ui.contributions;
   2
   3 import java.util.List;
   4
   5 import javax.inject.Named;
   6
   7 import org.eclipse.e4.core.di.annotations.CanExecute;
   8 import org.eclipse.e4.core.di.annotations.Execute;
   9 import org.eclipse.e4.ui.di.AboutToShow;
  10 import org.eclipse.e4.ui.model.application.MApplication;
  11 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  12 import org.eclipse.e4.ui.model.application.ui.menu.ItemType;
  13 import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
  14 import org.eclipse.e4.ui.model.application.ui.menu.MMenuElement;
  15 import org.eclipse.e4.ui.model.application.ui.menu.MMenuFactory;
  16 import org.eclipse.e4.ui.services.IServiceConstants;
  17 import org.eclipse.ui.IEditorPart;
  18 import org.simantics.Simantics;
  19 import org.simantics.databoard.Bindings;
  20 import org.simantics.db.ReadGraph;
  21 import org.simantics.db.Resource;
  22 import org.simantics.db.common.request.UnaryRead;
  23 import org.simantics.db.exception.DatabaseException;
  24 import org.simantics.db.request.Write;
  25 import org.simantics.district.network.ontology.DistrictNetworkResource;
  26 import org.simantics.district.network.ui.DistrictDiagramEditor;
  27 import org.simantics.district.network.ui.internal.Activator;
  28 import org.simantics.ui.workbench.IResourceEditorInput;
  29 import org.simantics.ui.workbench.e4.E4WorkbenchUtils;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public class ToggleSplitToMultipleDiagrams {
  34
  35     private static final Logger LOGGER = LoggerFactory.getLogger(ToggleSplitToMultipleDiagrams.class);
  36     private static final String COMMAND_ID = "org.simantics.district.network.ui.command.splittomultiplediagrams";
  37
  38     @AboutToShow
  39     public void aboutToShow(@Named(IServiceConstants.ACTIVE_PART) MPart mActiveEditorPart, MApplication app, List<MMenuElement> items) {
  40         Resource diagram = getDiagramFromEditorInput(mActiveEditorPart);
  41         if (diagram != null) {
  42             MHandledMenuItem menuItem = MMenuFactory.INSTANCE.createHandledMenuItem();
  43             menuItem.setType(ItemType.CHECK);
  44             menuItem.setLabel("Split to Multiple Diagrams");
  45             menuItem.setContributorURI(Activator.PLUGIN_ID);
  46             menuItem.setCommand(app.getCommand(COMMAND_ID));
  47             menuItem.setSelected(isSplitToMultipleEnabled(diagram));
  48             items.add(menuItem);
  49         }
  50     }
  51
  52     @CanExecute
  53     public boolean canExecute(@Named(IServiceConstants.ACTIVE_PART) MPart mActiveEditorPart) {
  54         IEditorPart activeEditorPart = E4WorkbenchUtils.getActiveIEditorPart(mActiveEditorPart);
  55         if (activeEditorPart == null)
  56             return false;
  57         if (!(activeEditorPart instanceof DistrictDiagramEditor))
  58             return false;
  59         return true;
  60     }
  61
  62     @Execute
  63     public void toggleSplitToMultiple(@Named(IServiceConstants.ACTIVE_PART) MPart mActiveEditorPart) {
  64         Resource diagram = getDiagramFromEditorInput(mActiveEditorPart);
  65         if (diagram != null) {
  66             Simantics.getSession()
  67                     .asyncRequest((Write) graph -> graph.claimLiteral(diagram,
  68                             DistrictNetworkResource.getInstance(graph).Diagram_splitToMultipleEnabled,
  69                             !splitToMultipleEnabled(graph, diagram), Bindings.BOOLEAN));
  70         }
  71     }
  72
  73     private static boolean isSplitToMultipleEnabled(Resource diagram) {
  74         try {
  75             return Simantics.getSession().syncRequest(new SplitToMultipleEnabledRequest(diagram));
  76         } catch (DatabaseException e) {
  77             LOGGER.error("Could not check if split to multiple is enabled for diagram {}", diagram, e);
  78             return false;
  79         }
  80     }
  81
  82     private static Boolean splitToMultipleEnabled(ReadGraph graph, Resource diagram) throws DatabaseException {
  83         return Boolean.TRUE.equals(graph.getPossibleRelatedValue(diagram,
  84                 DistrictNetworkResource.getInstance(graph).Diagram_splitToMultipleEnabled));
  85     }
  86
  87     private static Resource getDiagramFromEditorInput(MPart mActiveEditorPart) {
  88         IEditorPart activeEditorPart = E4WorkbenchUtils.getActiveIEditorPart(mActiveEditorPart);
  89         if (activeEditorPart == null)
  90             return null;
  91         if (!(activeEditorPart instanceof DistrictDiagramEditor))
  92             return null;
  93         IResourceEditorInput input = (IResourceEditorInput) activeEditorPart.getEditorInput();
  94         return input.getResource();
  95     }
  96
  97     private static class SplitToMultipleEnabledRequest extends UnaryRead<Resource, Boolean> {
  98
  99         public SplitToMultipleEnabledRequest(Resource diagram) {
 100             super(diagram);
 101         }
 102
 103         @Override
 104         public Boolean perform(ReadGraph graph) throws DatabaseException {
 105             return splitToMultipleEnabled(graph, parameter);
 106         }
 107     }
 108 }