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

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