X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.g2d%2Fsrc%2Forg%2Fsimantics%2Fg2d%2Fcanvas%2Fimpl%2FAbstractCanvasParticipant.java;h=a7950d26d6cf268939661b4120abf2b37917ff0a;hp=4de85481281222fc2646c8960bd452f51dffb6f6;hb=eaacbec0a17e8576b7502680de298fc14c51eef9;hpb=09414975498828d06ac41a95a1e3ee5c2531b934

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/AbstractCanvasParticipant.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/AbstractCanvasParticipant.java
index 4de854812..a7950d26d 100644
--- a/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/AbstractCanvasParticipant.java
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/AbstractCanvasParticipant.java
@@ -12,6 +12,8 @@
 package org.simantics.g2d.canvas.impl;
 
 import java.lang.reflect.Field;
+import java.util.HashSet;
+import java.util.Set;
 
 import org.simantics.g2d.canvas.ICanvasContext;
 import org.simantics.g2d.canvas.ICanvasParticipant;
@@ -171,6 +173,9 @@ public abstract class AbstractCanvasParticipant implements ICanvasParticipant {
             AbstractCanvasParticipant.this.depsSatisfied = depsSatisfied;
         }
     };
+
+    Set<Field> missingDependencies = new HashSet<>();
+    
     @SuppressWarnings("unchecked")
     private void _itemAdded(IContext<ICanvasParticipant> sender, ICanvasParticipant item)
     {
@@ -532,8 +537,12 @@ public abstract class AbstractCanvasParticipant implements ICanvasParticipant {
 	                    continue;
 	                Field f = rd.field;
 	                Object o = f.get(this);
-	                if (o == null)
+	                if (o == null) {
+	                    missingDependencies.add(f);
 	                    return false;
+	                } else {
+	                    missingDependencies.remove(f);
+	                }
 	            }
 	        } catch (Exception e) {
 	            throw new RuntimeException(e);