91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsContentTestNode.h"
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#include "nsIRDFResource.h"
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#include "nsIAtom.h"
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#include "nsIDOMElement.h"
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#include "nsXULContentUtils.h"
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#include "nsIXULTemplateResult.h"
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#include "nsIXULTemplateBuilder.h"
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#include "nsXULTemplateQueryProcessorRDF.h"
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#include "mozilla/Logging.h"
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using mozilla::LogLevel;
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extern mozilla::LazyLogModule gXULTemplateLog;
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nsContentTestNode::nsContentTestNode(nsXULTemplateQueryProcessorRDF* aProcessor,
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nsIAtom* aRefVariable)
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: TestNode(nullptr),
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mProcessor(aProcessor),
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mDocument(nullptr),
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mRefVariable(aRefVariable),
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mTag(nullptr)
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{
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if (MOZ_LOG_TEST(gXULTemplateLog, LogLevel::Debug)) {
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nsAutoString tag(NS_LITERAL_STRING("(none)"));
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if (mTag)
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mTag->ToString(tag);
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nsAutoString refvar(NS_LITERAL_STRING("(none)"));
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if (aRefVariable)
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aRefVariable->ToString(refvar);
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MOZ_LOG(gXULTemplateLog, LogLevel::Debug,
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("nsContentTestNode[%p]: ref-var=%s tag=%s",
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this, NS_ConvertUTF16toUTF8(refvar).get(),
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NS_ConvertUTF16toUTF8(tag).get()));
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}
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}
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nsresult
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nsContentTestNode::FilterInstantiations(InstantiationSet& aInstantiations,
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bool* aCantHandleYet) const
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{
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if (aCantHandleYet)
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*aCantHandleYet = false;
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return NS_OK;
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}
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nsresult
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nsContentTestNode::Constrain(InstantiationSet& aInstantiations)
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{
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// contrain the matches to those that have matched in the template builder
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nsIXULTemplateBuilder* builder = mProcessor->GetBuilder();
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if (!builder) {
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aInstantiations.Clear();
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return NS_OK;
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}
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nsresult rv;
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InstantiationSet::Iterator last = aInstantiations.Last();
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for (InstantiationSet::Iterator inst = aInstantiations.First(); inst != last; ++inst) {
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nsCOMPtr<nsIRDFNode> refValue;
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bool hasRefBinding = inst->mAssignments.GetAssignmentFor(mRefVariable,
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getter_AddRefs(refValue));
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if (hasRefBinding) {
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nsCOMPtr<nsIRDFResource> refResource = do_QueryInterface(refValue);
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if (refResource) {
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bool generated;
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rv = builder->HasGeneratedContent(refResource, mTag, &generated);
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if (NS_FAILED(rv)) return rv;
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if (generated)
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continue;
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}
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}
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aInstantiations.Erase(inst--);
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}
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return NS_OK;
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}
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