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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/. */
#ifndef nsRDFConInstanceTestNode_h__
#define nsRDFConInstanceTestNode_h__
#include "mozilla/Attributes.h"
#include "nscore.h"
#include "nsRDFTestNode.h"
#include "nsIRDFResource.h"
#include "nsIRDFDataSource.h"
#include "nsXULTemplateQueryProcessorRDF.h"
/**
* Rule network node that tests if a resource is an RDF container, or
* uses multi-attributes to ``contain'' other elements.
*/
class nsRDFConInstanceTestNode : public nsRDFTestNode
{
public:
enum Test { eFalse, eTrue, eDontCare };
nsRDFConInstanceTestNode(TestNode* aParent,
nsXULTemplateQueryProcessorRDF* aProcessor,
nsIAtom* aContainerVariable,
Test aContainer,
Test aEmpty);
virtual nsresult FilterInstantiations(InstantiationSet& aInstantiations,
bool* aCantHandleYet) const override;
virtual bool
CanPropagate(nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget,
Instantiation& aInitialBindings) const override;
virtual void
Retract(nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget) const override;
class Element : public MemoryElement {
public:
Element(nsIRDFResource* aContainer,
Test aContainerTest,
Test aEmptyTest)
: mContainer(aContainer),
mContainerTest(aContainerTest),
mEmptyTest(aEmptyTest) {
MOZ_COUNT_CTOR(nsRDFConInstanceTestNode::Element); }
virtual ~Element() { MOZ_COUNT_DTOR(nsRDFConInstanceTestNode::Element); }
virtual const char* Type() const override {
return "nsRDFConInstanceTestNode::Element"; }
virtual PLHashNumber Hash() const override {
return mozilla::HashGeneric(mContainerTest, mEmptyTest, mContainer.get());
}
virtual bool Equals(const MemoryElement& aElement) const override {
if (aElement.Type() == Type()) {
const Element& element = static_cast<const Element&>(aElement);
return mContainer == element.mContainer
&& mContainerTest == element.mContainerTest
&& mEmptyTest == element.mEmptyTest;
}
return false; }
protected:
nsCOMPtr<nsIRDFResource> mContainer;
Test mContainerTest;
Test mEmptyTest;
};
protected:
nsXULTemplateQueryProcessorRDF* mProcessor;
nsCOMPtr<nsIAtom> mContainerVariable;
Test mContainer;
Test mEmpty;
};
#endif // nsRDFConInstanceTestNode_h__
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