bundles/org.simantics.modeling/src/org/simantics/modeling/SCLDropAction.java

   1 package org.simantics.modeling;
   2
   3 import org.simantics.Simantics;
   4 import org.simantics.db.ReadGraph;
   5 import org.simantics.db.Resource;
   6 import org.simantics.db.common.request.ResourceRead;
   7 import org.simantics.db.exception.DatabaseException;
   8 import org.simantics.db.layer0.adapter.DropActionFactory;
   9 import org.simantics.db.layer0.variable.Variable;
  10 import org.simantics.db.layer0.variable.Variables;
  11 import org.simantics.diagram.Logger;
  12 import org.simantics.scl.runtime.function.Function3;
  13
  14 public class SCLDropAction implements DropActionFactory {
  15
  16         final private Resource rule;
  17
  18         public SCLDropAction(ReadGraph graph, Resource rule) throws DatabaseException {
  19                 this.rule = rule;
  20         }
  21
  22         static class RuleFunctionRequest extends ResourceRead<Function3<Resource,Object,Integer,Object>> {
  23
  24                 protected RuleFunctionRequest(Resource rule) {
  25                         super(rule);
  26                 }
  27
  28                 @Override
  29                 public Function3<Resource, Object, Integer, Object> perform(ReadGraph graph) throws DatabaseException {
  30                         Variable ruleVariable = Variables.getVariable(graph, resource);
  31                         ModelingResources MOD = ModelingResources.getInstance(graph);
  32                         return ruleVariable.getPossiblePropertyValue(graph, MOD.SCLDropAction_action);
  33                 }
  34
  35         }
  36
  37         public static class SCLDropActionRunnable implements Runnable {
  38
  39                 public Resource rule;
  40                 public Resource target;
  41                 public Object source;
  42                 public int operation;
  43
  44                 public SCLDropActionRunnable(Resource rule, Resource target, Object source, int operation) {
  45                         this.rule = rule;
  46                         this.target = target;
  47                         this.source = source;
  48                         this.operation = operation;
  49                 }
  50
  51                 @Override
  52                 public void run() {
  53                         Simantics.getSession().markUndoPoint();
  54                         try {
  55                                 Function3<Resource, Object, Integer, Object> function = Simantics.getSession().syncRequest(new RuleFunctionRequest(rule));
  56                                 function.apply(target, source, operation);
  57                         } catch (DatabaseException e) {
  58                                 Logger.defaultLogError(e);
  59                         }
  60                 }
  61
  62         }
  63
  64         @Override
  65         public Runnable create(ReadGraph g, Object target, Object source, int operation) throws DatabaseException {
  66                 return new SCLDropActionRunnable(rule, (Resource)target, source, operation);
  67         }
  68
  69 }