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/* -*- 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;
}
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