Editor Bindings: protect the internal map against modifications

Issue-Ref: 3883
Issue-Url: https://af3-developer.fortiss.org/issues/3883


Signed-off-by: Alexander Diewald <diewald@fortiss.org>

org.fortiss.tooling.kernel.ui/src/org/fortiss/tooling/kernel/ui/internal/.ratings

@@ -5,7 +5,7 @@ ConstraintUIService.java 433e35bb1c9bbc628c6ee070ff45632400becf4a GREEN
 ContextMenuService.java ca3c899293f25b70ce8e5f0d86ca2f9683329d81 GREEN
 EditPartFactoryService.java e9180c0020f1769d9e24ef3c08f9ca5599dbc5c3 GREEN
 MarkerService.java b01b7706034691683df7bbc2e7828c42574b3147 GREEN
-ModelEditorBindingService.java 788b8b898c7ad4118321aefca47e7623eac2b3e2 GREEN
+ModelEditorBindingService.java 3de291c87e2183ee2943e1c1d26f4bf78ce77a65 YELLOW
 ModelElementHandlerService.java 07a30545ad687ff0fe13bf7a9348c41fb03e0b2c GREEN
 NavigatorService.java 2b1361eac805996e22e5409dafff9707fbac3376 GREEN
 ToolingKernelUIInternal.java 38903445a9084b7908716a00f41621dfb3126fca GREEN

org.fortiss.tooling.kernel.ui/src/org/fortiss/tooling/kernel/ui/internal/ModelEditorBindingService.java

@@ -20,6 +20,7 @@ import static org.fortiss.tooling.kernel.utils.KernelModelElementUtils.getParent
 import static org.fortiss.tooling.kernel.utils.KernelModelElementUtils.isChildElementOf;
 import static org.fortiss.tooling.kernel.utils.LoggingUtils.error;
 
+import java.util.ArrayList;
 import java.util.EventObject;
 import java.util.HashMap;
 import java.util.List;
@@ -174,7 +175,7 @@ public class ModelEditorBindingService extends EObjectAwareServiceBase<IModelEdi
 		if(bindings == null) {
 			bindings = emptyList();
 		}
-		return bindings;
+		return new ArrayList<>(bindings);
 	}
 
 	/** {@inheritDoc} */