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-rw-r--r--dom/xul/templates/nsContentTestNode.cpp90
1 files changed, 90 insertions, 0 deletions
diff --git a/dom/xul/templates/nsContentTestNode.cpp b/dom/xul/templates/nsContentTestNode.cpp
new file mode 100644
index 000000000..53253a304
--- /dev/null
+++ b/dom/xul/templates/nsContentTestNode.cpp
@@ -0,0 +1,90 @@
+/* -*- 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/. */
+
+#include "nsContentTestNode.h"
+#include "nsIRDFResource.h"
+#include "nsIAtom.h"
+#include "nsIDOMElement.h"
+#include "nsXULContentUtils.h"
+#include "nsIXULTemplateResult.h"
+#include "nsIXULTemplateBuilder.h"
+#include "nsXULTemplateQueryProcessorRDF.h"
+
+#include "mozilla/Logging.h"
+
+using mozilla::LogLevel;
+
+extern mozilla::LazyLogModule gXULTemplateLog;
+
+nsContentTestNode::nsContentTestNode(nsXULTemplateQueryProcessorRDF* aProcessor,
+ nsIAtom* aRefVariable)
+ : TestNode(nullptr),
+ mProcessor(aProcessor),
+ mDocument(nullptr),
+ mRefVariable(aRefVariable),
+ mTag(nullptr)
+{
+ if (MOZ_LOG_TEST(gXULTemplateLog, LogLevel::Debug)) {
+ nsAutoString tag(NS_LITERAL_STRING("(none)"));
+ if (mTag)
+ mTag->ToString(tag);
+
+ nsAutoString refvar(NS_LITERAL_STRING("(none)"));
+ if (aRefVariable)
+ aRefVariable->ToString(refvar);
+
+ MOZ_LOG(gXULTemplateLog, LogLevel::Debug,
+ ("nsContentTestNode[%p]: ref-var=%s tag=%s",
+ this, NS_ConvertUTF16toUTF8(refvar).get(),
+ NS_ConvertUTF16toUTF8(tag).get()));
+ }
+}
+
+nsresult
+nsContentTestNode::FilterInstantiations(InstantiationSet& aInstantiations,
+ bool* aCantHandleYet) const
+
+{
+ if (aCantHandleYet)
+ *aCantHandleYet = false;
+ return NS_OK;
+}
+
+nsresult
+nsContentTestNode::Constrain(InstantiationSet& aInstantiations)
+{
+ // contrain the matches to those that have matched in the template builder
+
+ nsIXULTemplateBuilder* builder = mProcessor->GetBuilder();
+ if (!builder) {
+ aInstantiations.Clear();
+ return NS_OK;
+ }
+
+ nsresult rv;
+
+ InstantiationSet::Iterator last = aInstantiations.Last();
+ for (InstantiationSet::Iterator inst = aInstantiations.First(); inst != last; ++inst) {
+
+ nsCOMPtr<nsIRDFNode> refValue;
+ bool hasRefBinding = inst->mAssignments.GetAssignmentFor(mRefVariable,
+ getter_AddRefs(refValue));
+ if (hasRefBinding) {
+ nsCOMPtr<nsIRDFResource> refResource = do_QueryInterface(refValue);
+ if (refResource) {
+ bool generated;
+ rv = builder->HasGeneratedContent(refResource, mTag, &generated);
+ if (NS_FAILED(rv)) return rv;
+
+ if (generated)
+ continue;
+ }
+ }
+
+ aInstantiations.Erase(inst--);
+ }
+
+ return NS_OK;
+}