bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/dnd/DropSuggestions.java

   1 /*******************************************************************************
   2  * Copyright (c) 2018 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  *     Semantum Oy - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.modeling.ui.diagramEditor.dnd;
  13
  14 import java.util.List;
  15 import java.util.stream.Collectors;
  16
  17 import org.eclipse.jface.dialogs.Dialog;
  18 import org.eclipse.osgi.util.NLS;
  19 import org.eclipse.swt.SWT;
  20 import org.eclipse.swt.widgets.Shell;
  21 import org.simantics.NameLabelMode;
  22 import org.simantics.NameLabelUtil;
  23 import org.simantics.db.ReadGraph;
  24 import org.simantics.db.Resource;
  25 import org.simantics.db.WriteGraph;
  26 import org.simantics.db.common.utils.NameUtils;
  27 import org.simantics.db.exception.DatabaseException;
  28 import org.simantics.db.exception.ValidationException;
  29 import org.simantics.db.layer0.request.IsLinkedTo;
  30 import org.simantics.db.request.Write;
  31 import org.simantics.layer0.Layer0;
  32
  33 /**
  34  * @author Tuukka Lehtonen
  35  * @since 1.37.0
  36  */
  37 public class DropSuggestions {
  38
  39     public static boolean askSuggestions(Shell parent, List<DropSuggestion> suggestions) {
  40         return Dialog.OK == MarkupDialog.open(parent,
  41                 "diagram.dropSuggestionDialog", //$NON-NLS-1$
  42                 Messages.DropSuggestions_ApplySuggestions_DialogTitle,
  43                 Messages.DropSuggestions_ApplySuggestions_DialogMsg,
  44                 formatSuggestions(suggestions),
  45                 SWT.ICON_QUESTION,
  46                 SWT.NONE,
  47                 SWT.BORDER | SWT.WRAP | SWT.V_SCROLL);
  48     }
  49
  50     private static String formatSuggestions(List<DropSuggestion> suggestions) {
  51         return suggestions.stream()
  52                 .map(DropSuggestion::toString)
  53                 .collect(Collectors.joining("\n", "- ", "")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
  54     }
  55
  56     public static Write performSuggestionsRequest(List<DropSuggestion> suggestions) {
  57         return (Write) graph -> {
  58             for (DropSuggestion s : suggestions) {
  59                 s.fix(graph);
  60             }
  61         };
  62     }
  63
  64     public static DropSuggestion linkToLibrary(ReadGraph graph, Resource linkSource, Resource linkTarget) throws DatabaseException {
  65         return new LinkToLibrary(
  66                 NLS.bind(Messages.DropSuggestions_Description_LinkToLibrary,
  67                         NameLabelUtil.modalName(graph, linkSource, NameLabelMode.NAME_AND_LABEL),
  68                         NameLabelUtil.modalName(graph, linkTarget, NameLabelMode.NAME_AND_LABEL))
  69                 , linkSource, linkTarget);
  70     }
  71
  72     public static class LinkToLibrary implements DropSuggestion {
  73
  74         private final String desc;
  75         private final Resource linkFrom;
  76         private final Resource linkTo;
  77
  78         public LinkToLibrary(String desc, Resource linkFrom, Resource linkTo) {
  79             this.desc = desc;
  80             this.linkFrom = linkFrom;
  81             this.linkTo = linkTo;
  82         }
  83
  84         @Override
  85         public void fix(WriteGraph graph) throws DatabaseException {
  86             // Ensure that there is no reverse link between the namespaces
  87             if (graph.syncRequest(new IsLinkedTo(linkFrom, linkTo))) {
  88                 throw new ValidationException(
  89                         NLS.bind(Messages.DropSuggestions_Problem_CyclicDependency
  90                                 , NameUtils.getURIOrSafeNameInternal(graph, linkTo)
  91                                 , NameUtils.getURIOrSafeNameInternal(graph, linkFrom)));
  92             }
  93             Layer0 L0 = Layer0.getInstance(graph);
  94             graph.claim(linkFrom, L0.IsLinkedTo, L0.IsLinkedTo_Inverse, linkTo);
  95         }
  96
  97         @Override
  98         public String toString() {
  99             return desc;
 100         }
 101
 102     }
 103
 104 }