bundles/org.simantics.selectionview/src/org/simantics/selectionview/AbstractVariableTabContribution.java

   1 package org.simantics.selectionview;
   2
   3 import org.simantics.Simantics;
   4 import org.simantics.db.ReadGraph;
   5 import org.simantics.db.Resource;
   6 import org.simantics.db.exception.DatabaseException;
   7 import org.simantics.db.layer0.variable.Variable;
   8 import org.simantics.db.layer0.variable.Variables;
   9 import org.simantics.scl.runtime.function.Function;
  10 import org.simantics.ui.selection.WorkbenchSelectionUtils;
  11
  12 abstract public class AbstractVariableTabContribution extends AbstractTabContribution<SelectionInput> {
  13
  14         public AbstractVariableTabContribution(ReadGraph graph, Resource configuration) throws DatabaseException {
  15             super(graph, configuration);
  16         }
  17
  18     @Override
  19     public boolean accept(ReadGraph graph, Object input) throws DatabaseException {
  20         if (!super.accept(graph, input))
  21             return false;
  22         Variable variable = getPossibleVariable(graph, input);
  23         if (variable == null)
  24             return false;
  25
  26                 if(input instanceof SelectionInput) {
  27
  28                         SelectionViewResources SEL = SelectionViewResources.getInstance(graph);
  29
  30                         Variable configurationVariable = Variables.getVariable(graph, configuration);
  31                         Function f = configurationVariable.getPossiblePropertyValue(graph, SEL.AbstractVariableTabContribution_testFunction);
  32                         if(f != null) {
  33                                 Boolean pass = Simantics.<Boolean>applySCLRead(graph, f, variable);
  34                                 if(!pass) return false;
  35                         }
  36
  37                 } else {
  38                         return false;
  39                 }
  40                 return true;
  41         }
  42
  43         final private Variable getPossibleVariable(ReadGraph graph, Object selection) throws DatabaseException {
  44                 if(selection instanceof SelectionInput) {
  45                         SelectionInput si = (SelectionInput)selection;
  46                         if(si.getElements().size() == 1) {
  47                                 return WorkbenchSelectionUtils.getPossibleVariable(graph, si.getElements().iterator().next());
  48                         }
  49                 }
  50                 return null;
  51         }
  52 }