X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.spreadsheet%2Fsrc%2Forg%2Fsimantics%2Fspreadsheet%2FExternalRef.java;fp=bundles%2Forg.simantics.spreadsheet%2Fsrc%2Forg%2Fsimantics%2Fspreadsheet%2FExternalRef.java;h=70486d9d78f6d7b536b5e6f3c4728daf4577aa74;hb=c07a3818f0024e932a27eb85cbfd3f2291475a65;hp=0000000000000000000000000000000000000000;hpb=6c99e980d250fb9201aba93be7dcb1f55564dccd;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.spreadsheet/src/org/simantics/spreadsheet/ExternalRef.java b/bundles/org.simantics.spreadsheet/src/org/simantics/spreadsheet/ExternalRef.java
new file mode 100644
index 000000000..70486d9d7
--- /dev/null
+++ b/bundles/org.simantics.spreadsheet/src/org/simantics/spreadsheet/ExternalRef.java
@@ -0,0 +1,16 @@
+package org.simantics.spreadsheet;
+
+import org.simantics.databoard.binding.mutable.Variant;
+
+public interface ExternalRef {
+
+    public interface ExternalRefListener {
+
+        public void newValue(Variant value);
+        public boolean isDisposed();
+
+    }
+
+    public void listen(Object context, ExternalRefListener listener);
+
+}