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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2012 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.browsing.ui.swt.widgets;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.Collection;\r
  16 import java.util.Collections;\r
  17 import java.util.HashSet;\r
  18 import java.util.Map;\r
  19 import java.util.Set;\r
  20 \r
  21 import org.eclipse.swt.widgets.Composite;\r
  22 import org.eclipse.ui.IWorkbenchSite;\r
  23 import org.simantics.browsing.ui.NodeContext;\r
  24 import org.simantics.browsing.ui.common.ErrorLogger;\r
  25 import org.simantics.browsing.ui.model.InvalidContribution;\r
  26 import org.simantics.browsing.ui.model.browsecontexts.BrowseContext;\r
  27 import org.simantics.browsing.ui.model.dnd.DndBrowseContext;\r
  28 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;\r
  29 import org.simantics.db.ReadGraph;\r
  30 import org.simantics.db.Resource;\r
  31 import org.simantics.db.common.request.ReadRequest;\r
  32 import org.simantics.db.exception.DatabaseException;\r
  33 import org.simantics.db.exception.ResourceNotFoundException;\r
  34 import org.simantics.db.procedure.Procedure;\r
  35 import org.simantics.db.request.Read;\r
  36 import org.simantics.ui.SimanticsUI;\r
  37 import org.simantics.utils.ui.ExceptionUtils;\r
  38 \r
  39 public class ModelBrowser extends GraphExplorerComposite {\r
  40 \r
  41     volatile DndBrowseContext dndBrowseContext;\r
  42 \r
  43     private static final String CONTEXT_MENU_ID = "#GraphExplorerPopup";\r
  44 \r
  45     protected Set<String>                                 propertyBrowseContexts = Collections.emptySet();\r
  46 \r
  47     protected boolean                                     hideComparatorSelector = false;\r
  48     protected boolean                                     hideViewpointSelector = false;\r
  49     protected boolean                                     hideFilter = false;\r
  50 \r
  51     @Override\r
  52     protected String getContextMenuId() {\r
  53         if(contextMenuId != null) return contextMenuId;\r
  54         else return CONTEXT_MENU_ID;\r
  55     }\r
  56 \r
  57     @Override\r
  58     protected void createControls(Composite parent) {\r
  59         this.propertyBrowseContexts = loadBrowseContexts(getBrowseContexts());\r
  60         super.createControls(parent);\r
  61     }\r
  62 \r
  63     protected static Set<String> loadBrowseContexts(final Set<String> browseContexts) {\r
  64         try {\r
  65             return SimanticsUI.getSession().syncRequest(new Read<Set<String>>() {\r
  66                 @Override\r
  67                 public Set<String> perform(ReadGraph graph) throws DatabaseException {\r
  68                     Collection<Resource> browseContextResources = new ArrayList<Resource>(browseContexts.size());\r
  69                     for (String browseContext : browseContexts) {\r
  70                         try {\r
  71                             browseContextResources.add(graph.getResource(browseContext));\r
  72                         } catch (ResourceNotFoundException e) {\r
  73                             // Expected result, if no modelled contributions exist.\r
  74                             //System.err.println("Didn't find " + browseContext + " while loading model browser.");\r
  75                         } catch (DatabaseException e) {\r
  76                             ExceptionUtils.logError("Didn't find " + browseContext + " while loading model browser.", e);\r
  77                         }\r
  78                     }\r
  79                     Collection<Resource> allBrowseContextResources = BrowseContext.findSubcontexts(graph, browseContextResources);\r
  80                     Set<String> result = new HashSet<String>();\r
  81                     for (Resource r : allBrowseContextResources)\r
  82                         result.add(graph.getURI(r));\r
  83                     return result;\r
  84                 }\r
  85             });\r
  86         } catch (DatabaseException e) {\r
  87             ExceptionUtils.logAndShowError("Failed to load modeled browse contexts for property page, see exception for details.", e);\r
  88             return browseContexts;\r
  89         }\r
  90     }\r
  91     \r
  92     public ModelBrowser(final Set<String> _browseContexts, Map<String, Object> args, IWorkbenchSite site, Composite parent, WidgetSupport support, int style) {\r
  93         \r
  94         super(args, site, parent, support, style);\r
  95     \r
  96         setBrowseContexts(_browseContexts);\r
  97         \r
  98         // As long as these are not useful, don't shown them by default.\r
  99         this.hideComparatorSelector = true;\r
 100         this.hideViewpointSelector = true;\r
 101 \r
 102         SimanticsUI.getSession().asyncRequest(new ReadRequest() {\r
 103             @Override\r
 104             public void run(ReadGraph graph) throws DatabaseException { \r
 105                 ArrayList<Resource> browseContexts = new ArrayList<Resource>();\r
 106                 for (String uri : _browseContexts) {\r
 107                     Resource browseContext = graph.getPossibleResource(uri);\r
 108                     if (browseContext != null)\r
 109                         browseContexts.add(browseContext);\r
 110                 }\r
 111                 try {\r
 112                     dndBrowseContext = DndBrowseContext.create(graph, browseContexts);\r
 113                 } catch (InvalidContribution e) {\r
 114                     ErrorLogger.defaultLogError(e);\r
 115                 }\r
 116             }\r
 117         });\r
 118     }\r
 119 \r
 120     @Override\r
 121     protected void handleDrop(final Object data, final NodeContext target) {\r
 122         if (target == null)\r
 123             return;\r
 124 \r
 125         SimanticsUI.getSession().asyncRequest(new Read<Runnable>() {\r
 126             @Override\r
 127             public Runnable perform(ReadGraph graph) throws DatabaseException {\r
 128                 if (dndBrowseContext == null)\r
 129                     return null;\r
 130                 return dndBrowseContext.getAction(graph, target, data);\r
 131             }\r
 132         }, new Procedure<Runnable>() {\r
 133             @Override\r
 134             public void execute(Runnable result) {\r
 135                 if (result != null)\r
 136                     result.run();\r
 137             }\r
 138 \r
 139             @Override\r
 140             public void exception(Throwable t) {\r
 141                 ErrorLogger.defaultLogError(t);\r
 142             }\r
 143         });\r
 144     }\r
 145 \r
 146 }\r