bundles/org.simantics.document.swt.core/src/org/simantics/document/swt/core/scl/SCL.java

   1 package org.simantics.document.swt.core.scl;
   2
   3 import java.util.List;
   4
   5 import org.simantics.databoard.Bindings;
   6 import org.simantics.db.ReadGraph;
   7 import org.simantics.db.Resource;
   8 import org.simantics.db.WriteGraph;
   9 import org.simantics.db.common.request.WriteRequest;
  10 import org.simantics.db.exception.DatabaseException;
  11 import org.simantics.db.layer0.variable.Variable;
  12 import org.simantics.db.layer0.variable.Variables;
  13 import org.simantics.document.server.handler.AbstractEventHandler;
  14 import org.simantics.document.server.handler.EventHandler;
  15 import org.simantics.document.server.handler.WriteEventHandler;
  16 import org.simantics.document.server.io.CommandContext;
  17 import org.simantics.document.server.io.CommandResult;
  18 import org.simantics.document.server.serverResponse.ServerResponse;
  19 import org.simantics.document.swt.core.SWTViews;
  20 import org.simantics.scl.runtime.SCLContext;
  21 import org.simantics.scl.runtime.function.Function1;
  22 import org.simantics.scl.runtime.reporting.SCLReportingHandler;
  23 import org.simantics.scl.runtime.tuple.Tuple0;
  24 import org.simantics.ui.selection.WorkbenchSelectionElement;
  25 import org.simantics.ui.selection.WorkbenchSelectionUtils;
  26
  27 public class SCL {
  28
  29     public static final String SCL_VALUE_PROPERTY = "sclValueProperty";
  30
  31     public static EventHandler eventHandler(final Function1<Object, Object> fn) {
  32         return new EventHandler() {
  33
  34                         @Override
  35                         protected ServerResponse handle(ReadGraph graph, CommandContext parameters) throws DatabaseException {
  36
  37                             final SCLReportingHandler printer = (SCLReportingHandler)SCLContext.getCurrent().get(SCLReportingHandler.REPORTING_HANDLER);
  38                                 graph.async(new WriteRequest() {
  39
  40                                         @Override
  41                                         public void perform(WriteGraph graph) throws DatabaseException {
  42                                             SCLContext sclContext = SCLContext.getCurrent();
  43                                             Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
  44                                                 Object oldGraph = sclContext.put("graph", graph);
  45                                                 try {
  46                                                         fn.apply(Tuple0.INSTANCE);
  47                                                 } finally {
  48                                                         sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
  49                                                         sclContext.put("graph", oldGraph);
  50                                                 }
  51                                         }
  52
  53                                 });
  54
  55                                 return null;
  56
  57                         }
  58
  59                 };
  60     }
  61
  62     public static String getURI(ReadGraph graph, Variable variable) throws DatabaseException {
  63         return variable.getURI(graph);
  64     }
  65
  66     public static String propertyDisplayValue(ReadGraph graph, Variable variable, String property) throws DatabaseException {
  67         Variable var = variable.getProperty(graph, property);
  68         Variable var2 = var.getProperty(graph, Variables.DISPLAY_VALUE);
  69         return var2.getValue(graph);
  70     }
  71
  72     public static AbstractEventHandler propertyValueSetter(ReadGraph graph, Variable variable, String property) throws DatabaseException {
  73         String uri = variable.getURI(graph);
  74         return new ValueSetter(uri, property);
  75     }
  76
  77     public static String propertyGetter(ReadGraph graph, Variable variable) throws DatabaseException {
  78         String value = variable.getPossiblePropertyValue(graph, SCL_VALUE_PROPERTY);
  79         return value;
  80     }
  81
  82     static class ValueSetter extends WriteEventHandler {
  83
  84         private String varUri;
  85         private String property;
  86
  87         public ValueSetter(String varUri, String property) {
  88             this.varUri = varUri;
  89             this.property = property;
  90         }
  91
  92         @Override
  93         protected CommandResult handle(WriteGraph graph, CommandContext parameters) throws DatabaseException {
  94             Variable variable = Variables.getVariable(graph, varUri);
  95             Variable var = variable.getPossibleProperty(graph, property);
  96             Variable var2 = var.getPossibleProperty(graph, Variables.DISPLAY_VALUE);
  97             var2.setValue(graph, parameters.getString("text"), Bindings.STRING);
  98             return null;
  99         }
 100     };
 101
 102     @SuppressWarnings("unchecked")
 103     public static List<WorkbenchSelectionElement> decodeWSES(String key) {
 104         return (List<WorkbenchSelectionElement>)SWTViews.decode(key);
 105     }
 106
 107     public static Resource wseResource(ReadGraph graph, WorkbenchSelectionElement wse) throws DatabaseException {
 108         return WorkbenchSelectionUtils.getPossibleResource(wse);
 109     }
 110
 111 }