bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/ge/SourceLinkExplorerComposite.java

   1 package org.simantics.document.linking.ge;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 import java.util.Map;\r
   5 \r
   6 import org.eclipse.jface.viewers.ISelectionProvider;\r
   7 import org.eclipse.swt.widgets.Composite;\r
   8 import org.eclipse.ui.IWorkbenchSite;\r
   9 import org.simantics.browsing.ui.NodeContext;\r
  10 import org.simantics.browsing.ui.common.ErrorLogger;\r
  11 import org.simantics.browsing.ui.model.InvalidContribution;\r
  12 import org.simantics.browsing.ui.model.dnd.DndBrowseContext;\r
  13 import org.simantics.browsing.ui.swt.DefaultExplorerSelectionListener;\r
  14 import org.simantics.browsing.ui.swt.widgets.GraphExplorerComposite;\r
  15 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;\r
  16 import org.simantics.db.ReadGraph;\r
  17 import org.simantics.db.Resource;\r
  18 import org.simantics.db.common.request.ReadRequest;\r
  19 import org.simantics.db.exception.DatabaseException;\r
  20 import org.simantics.db.procedure.Procedure;\r
  21 import org.simantics.db.request.Read;\r
  22 import org.simantics.ui.SimanticsUI;\r
  23 \r
  24 public class SourceLinkExplorerComposite extends GraphExplorerComposite {\r
  25         \r
  26         volatile DndBrowseContext dndBrowseContext;\r
  27         private IWorkbenchSite site;\r
  28         private MultiSelectionProvider provider;\r
  29         \r
  30     public SourceLinkExplorerComposite(Map<String, Object> args, MultiSelectionProvider provider, IWorkbenchSite site, Composite parent,  WidgetSupport support, int style) {\r
  31         super(args, site, parent, support, style);\r
  32         this.site = site;\r
  33         this.provider = provider;\r
  34         attachDND();\r
  35         \r
  36     }\r
  37     \r
  38     public SourceLinkExplorerComposite(Map<String, Object> args, MultiSelectionProvider provider, IWorkbenchSite site, Composite parent,  WidgetSupport support, boolean useDND, int style) {\r
  39         super(args, site, parent, support, style);\r
  40         this.site = site;\r
  41         this.provider = provider;\r
  42         if (useDND)\r
  43                 attachDND();\r
  44     }\r
  45     \r
  46     private void attachDND() {\r
  47         SimanticsUI.getSession().asyncRequest(new ReadRequest() {\r
  48             @Override\r
  49             public void run(ReadGraph graph) throws DatabaseException { \r
  50                 ArrayList<Resource> browseContexts = new ArrayList<Resource>();\r
  51                 for (String uri : getBrowseContexts()) {\r
  52                     Resource browseContext = graph.getPossibleResource(uri);\r
  53                     if (browseContext != null)\r
  54                         browseContexts.add(browseContext);\r
  55                 }\r
  56                 try {\r
  57                     dndBrowseContext = DndBrowseContext.create(graph, browseContexts);\r
  58                 } catch (InvalidContribution e) {\r
  59                     ErrorLogger.defaultLogError(e);\r
  60                 }\r
  61             }\r
  62         });\r
  63     }\r
  64     \r
  65     @Override\r
  66     protected void handleDrop(final Object data, final NodeContext target) {\r
  67         if (target == null)\r
  68             return;\r
  69 \r
  70         SimanticsUI.getSession().asyncRequest(new Read<Runnable>() {\r
  71             @Override\r
  72             public Runnable perform(ReadGraph graph) throws DatabaseException {\r
  73                 if (dndBrowseContext == null)\r
  74                     return null;\r
  75                 return dndBrowseContext.getAction(graph, target, data);\r
  76             }\r
  77         }, new Procedure<Runnable>() {\r
  78             @Override\r
  79             public void execute(Runnable result) {\r
  80                 if (result != null)\r
  81                     result.run();\r
  82             }\r
  83 \r
  84             @Override\r
  85             public void exception(Throwable t) {\r
  86                 ErrorLogger.defaultLogError(t);\r
  87             }\r
  88         });\r
  89     }\r
  90     \r
  91     public void setWorkbenchListeners() {\r
  92         if (workbenchSelectionListener == null && site != null) {\r
  93             ISelectionProvider selectionProvider = (ISelectionProvider) explorer.getAdapter(ISelectionProvider.class);\r
  94             //site.setSelectionProvider(selectionProvider);\r
  95             provider.addSelectionProvider(selectionProvider);\r
  96 \r
  97             // Listen to the workbench selection also to propagate it to\r
  98             // the explorer also.\r
  99             workbenchSelectionListener = new DefaultExplorerSelectionListener(site.getPage().getActivePart(), explorer);\r
 100             //System.out.println("ADD WORKBENCH SELECTION LISTENER: " + workbenchSelectionListener);\r
 101             site.getWorkbenchWindow().getSelectionService().addPostSelectionListener(workbenchSelectionListener);\r
 102         }\r
 103     }\r
 104         \r
 105 \r
 106 }\r