import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/xul/templates/nsXULTemplateResultRDF.h

@@ -0,0 +1,81 @@
+/* -*- 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 nsXULTemplateResultRDF_h__
+#define nsXULTemplateResultRDF_h__
+
+#include "nsCOMPtr.h"
+#include "nsIRDFResource.h"
+#include "nsXULTemplateQueryProcessorRDF.h"
+#include "nsRDFQuery.h"
+#include "nsRuleNetwork.h"
+#include "nsIXULTemplateResult.h"
+#include "nsRDFBinding.h"
+#include "mozilla/Attributes.h"
+
+/**
+ * A single result of a query on an RDF graph
+ */
+class nsXULTemplateResultRDF final : public nsIXULTemplateResult
+{
+public:
+    NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+    NS_DECL_CYCLE_COLLECTION_CLASS(nsXULTemplateResultRDF)
+
+    NS_DECL_NSIXULTEMPLATERESULT
+
+    explicit nsXULTemplateResultRDF(nsIRDFResource* aNode);
+
+    nsXULTemplateResultRDF(nsRDFQuery* aQuery,
+                           const Instantiation& aInst,
+                           nsIRDFResource* aNode);
+
+    nsITemplateRDFQuery* Query() { return mQuery; }
+
+    nsXULTemplateQueryProcessorRDF* GetProcessor()
+    {
+        return (mQuery ? mQuery->Processor() : nullptr);
+    }
+
+    /**
+     * Get the value of a variable, first by looking in the assignments and
+     * then the bindings
+     */
+    void
+    GetAssignment(nsIAtom* aVar, nsIRDFNode** aValue);
+
+    /**
+     * Synchronize the bindings after a change in the RDF graph. Bindings that
+     * would be affected will be assigned appropriately based on the change.
+     */
+    bool
+    SyncAssignments(nsIRDFResource* aSubject,
+                    nsIRDFResource* aPredicate,
+                    nsIRDFNode* aTarget);
+
+    /**
+     * Return true if the result has an instantiation involving a particular
+     * memory element.
+     */
+    bool
+    HasMemoryElement(const MemoryElement& aMemoryElement);
+
+protected:
+    ~nsXULTemplateResultRDF();
+
+    // query that generated the result
+    nsCOMPtr<nsITemplateRDFQuery> mQuery;
+
+    // resource node
+    nsCOMPtr<nsIRDFResource> mNode;
+
+    // data computed from query
+    Instantiation mInst;
+
+    // extra assignments made by rules (<binding> tags)
+    nsBindingValues mBindingValues;
+};
+
+#endif // nsXULTemplateResultRDF_h__