1 files changed, 49 insertions, 0 deletions
diff --git a/dom/xul/templates/nsRDFTestNode.h b/dom/xul/templates/nsRDFTestNode.h
new file mode 100644
index 000000000..0e450fadf
--- /dev/null
+++ b/dom/xul/templates/nsRDFTestNode.h
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsRDFTestNode_h__
+#define nsRDFTestNode_h__
+
+#include "nsRuleNetwork.h"
+
+class nsIRDFResource;
+class nsIRDFNode;
+
+/**
+ * An abstract base class for all of the RDF-related tests. This interface
+ * allows us to iterate over all of the RDF tests to find the one in the
+ * network that is apropos for a newly-added assertion.
+ */
+class nsRDFTestNode : public TestNode
+{
+public:
+    explicit nsRDFTestNode(TestNode* aParent)
+        : TestNode(aParent) {}
+
+    /**
+     * Determine whether the node can propagate an assertion
+     * with the specified source, property, and target. If the
+     * assertion can be propagated, aInitialBindings will be
+     * initialized with appropriate variable-to-value assignments
+     * to allow the rule network to start a constrain and propagate
+     * search from this node in the network.
+     *
+     * @return true if the node can propagate the specified
+     * assertion.
+     */
+    virtual bool CanPropagate(nsIRDFResource* aSource,
+                                nsIRDFResource* aProperty,
+                                nsIRDFNode* aTarget,
+                                Instantiation& aInitialBindings) const = 0;
+
+    /**
+     *
+     */
+    virtual void Retract(nsIRDFResource* aSource,
+                         nsIRDFResource* aProperty,
+                         nsIRDFNode* aTarget) const = 0;
+};
+
+#endif // nsRDFTestNode_h__