bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/ModelBrowser.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2012 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.browsing.ui.swt.widgets;
  13
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17 import java.util.HashSet;
  18 import java.util.Map;
  19 import java.util.Set;
  20
  21 import org.eclipse.swt.widgets.Composite;
  22 import org.eclipse.swt.widgets.Display;
  23 import org.eclipse.ui.IWorkbenchSite;
  24 import org.simantics.Simantics;
  25 import org.simantics.browsing.ui.NodeContext;
  26 import org.simantics.browsing.ui.common.ErrorLogger;
  27 import org.simantics.browsing.ui.model.InvalidContribution;
  28 import org.simantics.browsing.ui.model.browsecontexts.BrowseContext;
  29 import org.simantics.browsing.ui.model.dnd.DndBrowseContext;
  30 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;
  31 import org.simantics.db.ReadGraph;
  32 import org.simantics.db.Resource;
  33 import org.simantics.db.common.request.ReadRequest;
  34 import org.simantics.db.exception.DatabaseException;
  35 import org.simantics.db.exception.ResourceNotFoundException;
  36 import org.simantics.db.procedure.Procedure;
  37 import org.simantics.db.request.Read;
  38 import org.simantics.utils.ui.ExceptionUtils;
  39
  40 public class ModelBrowser extends GraphExplorerComposite {
  41
  42     volatile DndBrowseContext dndBrowseContext;
  43
  44     private static final String CONTEXT_MENU_ID = "#GraphExplorerPopup";
  45
  46     protected Set<String>                                 propertyBrowseContexts = Collections.emptySet();
  47
  48     protected boolean                                     hideComparatorSelector = false;
  49     protected boolean                                     hideViewpointSelector = false;
  50     protected boolean                                     hideFilter = false;
  51
  52     @Override
  53     protected String getContextMenuId() {
  54         if(contextMenuId != null) return contextMenuId;
  55         else return CONTEXT_MENU_ID;
  56     }
  57
  58     @Override
  59     protected void createControls(Composite parent) {
  60         this.propertyBrowseContexts = loadBrowseContexts(getBrowseContexts());
  61         super.createControls(parent);
  62     }
  63
  64     protected static Set<String> loadBrowseContexts(final Set<String> browseContexts) {
  65         try {
  66             return Simantics.getSession().syncRequest(new Read<Set<String>>() {
  67                 @Override
  68                 public Set<String> perform(ReadGraph graph) throws DatabaseException {
  69                     Collection<Resource> browseContextResources = new ArrayList<>(browseContexts.size());
  70                     for (String browseContext : browseContexts) {
  71                         try {
  72                             browseContextResources.add(graph.getResource(browseContext));
  73                         } catch (ResourceNotFoundException e) {
  74                             // Expected result, if no modelled contributions exist.
  75                             //System.err.println("Didn't find " + browseContext + " while loading model browser.");
  76                         } catch (DatabaseException e) {
  77                             ExceptionUtils.logError("Didn't find " + browseContext + " while loading model browser.", e);
  78                         }
  79                     }
  80                     Collection<Resource> allBrowseContextResources = BrowseContext.findSubcontexts(graph, browseContextResources);
  81                     Set<String> result = new HashSet<>();
  82                     for (Resource r : allBrowseContextResources)
  83                         result.add(graph.getURI(r));
  84                     return result;
  85                 }
  86             });
  87         } catch (DatabaseException e) {
  88             ExceptionUtils.logAndShowError("Failed to load modeled browse contexts for property page, see exception for details.", e);
  89             return browseContexts;
  90         }
  91     }
  92
  93     public ModelBrowser(final Set<String> _browseContexts, Map<String, Object> args, IWorkbenchSite site, Composite parent, WidgetSupport support, int style) {
  94
  95         super(args, site, parent, support, style);
  96
  97         setBrowseContexts(_browseContexts);
  98
  99         // As long as these are not useful, don't shown them by default.
 100         this.hideComparatorSelector = true;
 101         this.hideViewpointSelector = true;
 102
 103         Simantics.getSession().asyncRequest(new ReadRequest() {
 104             @Override
 105             public void run(ReadGraph graph) throws DatabaseException {
 106                 ArrayList<Resource> browseContexts = new ArrayList<>();
 107                 for (String uri : _browseContexts) {
 108                     Resource browseContext = graph.getPossibleResource(uri);
 109                     if (browseContext != null)
 110                         browseContexts.add(browseContext);
 111                 }
 112                 try {
 113                     dndBrowseContext = DndBrowseContext.create(graph, browseContexts);
 114                 } catch (InvalidContribution e) {
 115                     ErrorLogger.defaultLogError(e);
 116                 }
 117             }
 118         });
 119     }
 120
 121     @Override
 122     protected void handleDrop(final Object data, final NodeContext target) {
 123         if (target == null)
 124             return;
 125
 126         Simantics.getSession().asyncRequest(new Read<Runnable>() {
 127             @Override
 128             public Runnable perform(ReadGraph graph) throws DatabaseException {
 129                 if (dndBrowseContext == null)
 130                     return null;
 131                 return dndBrowseContext.getAction(graph, target, data);
 132             }
 133         }, new Procedure<Runnable>() {
 134             @Override
 135             public void execute(Runnable result) {
 136                 Display.getDefault().asyncExec(() -> {
 137                     if (!Display.getCurrent().isDisposed() && result != null)
 138                         result.run();
 139                 });
 140             }
 141
 142             @Override
 143             public void exception(Throwable t) {
 144                 ErrorLogger.defaultLogError(t);
 145             }
 146         });
 147     }
 148
 149 }