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