bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/ExpandNodeHandler.java

   1 package org.simantics.modeling.ui;
   2
   3 import java.util.Arrays;
   4
   5 import org.simantics.browsing.ui.BuiltinKeys;
   6 import org.simantics.browsing.ui.GraphExplorer;
   7 import org.simantics.browsing.ui.NodeContext;
   8 import org.simantics.browsing.ui.PrimitiveQueryProcessor;
   9 import org.simantics.browsing.ui.common.processors.IsExpandedProcessor;
  10 import org.simantics.db.exception.DatabaseException;
  11 import org.simantics.db.layer0.SelectionHints;
  12 import org.simantics.ui.DoubleClickEvent;
  13 import org.simantics.ui.IDoubleClickAction;
  14 import org.simantics.ui.workbench.action.IWorkbenchActionHints;
  15 import org.simantics.ui.workbench.editor.EditorAdapter;
  16 import org.simantics.ui.workbench.editor.EditorRegistry;
  17 import org.simantics.utils.ui.ISelectionUtils;
  18 import org.simantics.utils.ui.action.IPriorityAction;
  19 import org.simantics.utils.ui.action.PriorityAction;
  20
  21 /**
  22  * @author Tuukka Lehtonen
  23  */
  24 public class ExpandNodeHandler implements IDoubleClickAction {
  25
  26     @Override
  27     public void doubleClickEvent(DoubleClickEvent e) throws DatabaseException {
  28         Object selection = e.getResource();
  29         NodeContext node = ISelectionUtils.getSinglePossibleKey(selection, SelectionHints.KEY_MAIN, NodeContext.class);
  30         if (node == null)
  31             return;
  32
  33         Object widget = e.getHintContext().getHint(IWorkbenchActionHints.KEY_WIDGET);
  34         if (!(widget instanceof GraphExplorer))
  35             return;
  36         GraphExplorer explorer = (GraphExplorer) widget;
  37
  38         // Get adapters in descending priority order
  39         EditorAdapter[] editorAdapters = EditorRegistry.getInstance().getAdaptersFor(e.getGraph(), selection);
  40         if (editorAdapters.length > 1)
  41             Arrays.sort(editorAdapters, (o1,o2) -> -(o1.getPriority() - o2.getPriority()));
  42
  43         // If editor selection is unanimous, use the editor. Otherwise just expand/collapse the clicked node.
  44         if (editorAdapters.length == 0) {
  45             e.add(expandAction(explorer, node));
  46             e.consume();
  47         } else if (editorAdapters.length > 1 && editorAdapters[0].getPriority() == editorAdapters[1].getPriority()) {
  48             e.add(expandAction(explorer, node));
  49             e.consume();
  50         }
  51     }
  52
  53     private IPriorityAction expandAction(GraphExplorer explorer, NodeContext node) {
  54         return new PriorityAction(100) {
  55             @Override
  56             public void run() {
  57                 PrimitiveQueryProcessor<?> pqp = explorer.getPrimitiveProcessor(BuiltinKeys.IS_EXPANDED);
  58                 if (pqp instanceof IsExpandedProcessor) {
  59                     IsExpandedProcessor iep = (IsExpandedProcessor) pqp;
  60                     boolean expanded = iep.getExpanded(node);
  61                     iep.replaceExpanded(node, !expanded);
  62                 }
  63             }
  64         };
  65     }
  66
  67 }