bundles/org.simantics.spreadsheet/src/org/simantics/spreadsheet/solver/ExternalRefData.java

   1 package org.simantics.spreadsheet.solver;
   2
   3 import org.simantics.databoard.binding.mutable.Variant;
   4 import org.simantics.spreadsheet.ExternalRef;
   5 import org.simantics.spreadsheet.ExternalRef.ExternalRefListener;
   6
   7 class ExternalRefData implements ExternalRefListener {
   8
   9     final private SpreadsheetBook book;
  10     final private long referenceKey;
  11     final private ExternalRef ref;
  12     private boolean isDisposed = false;
  13     private Variant value = SpreadsheetBook.DEFAULT_VALUE;
  14
  15     public ExternalRefData(SpreadsheetBook book, long referenceKey, ExternalRef ref) {
  16         this.book = book;
  17         this.referenceKey = referenceKey;
  18         this.ref = ref;
  19         ref.listen(book.context, this);
  20     }
  21
  22     public Variant getContent() {
  23         return value;
  24     }
  25
  26     public ExternalRef getRef() {
  27         return ref;
  28     }
  29
  30     @Override
  31     public void newValue(Variant newVariant) {
  32         SpreadsheetCell cell = book.cellByReferenceKey(referenceKey);
  33         if(cell.getContent() instanceof SpreadsheetSCLConstant) {
  34             SpreadsheetSCLConstant ssc = (SpreadsheetSCLConstant)cell.getContent();
  35             Object content = ssc.getContent();
  36             if(content.equals(ref)) {
  37                 value = newVariant;
  38                 book.fireChanges(book.invalidate(cell));
  39                 return;
  40             }
  41         }
  42         isDisposed = true;
  43     }
  44
  45     @Override
  46     public boolean isDisposed() {
  47         if(isDisposed)
  48             return true;
  49         return book.isDisposed();
  50     }
  51
  52 }