/* -*- 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__