michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsRDFPropertyTestNode_h__
michael@0: #define nsRDFPropertyTestNode_h__
michael@0: 
michael@0: #include "mozilla/Attributes.h"
michael@0: #include "nscore.h"
michael@0: #include "nsRDFTestNode.h"
michael@0: #include "nsIRDFDataSource.h"
michael@0: #include "nsIRDFResource.h"
michael@0: #include "nsXULTemplateQueryProcessorRDF.h"
michael@0: 
michael@0: class nsRDFPropertyTestNode : public nsRDFTestNode
michael@0: {
michael@0: public:
michael@0:     /**
michael@0:      * Both source and target unbound (?source ^property ?target)
michael@0:      */
michael@0:     nsRDFPropertyTestNode(TestNode* aParent,
michael@0:                           nsXULTemplateQueryProcessorRDF* aProcessor,
michael@0:                           nsIAtom* aSourceVariable,
michael@0:                           nsIRDFResource* aProperty,
michael@0:                           nsIAtom* aTargetVariable);
michael@0: 
michael@0:     /**
michael@0:      * Source bound, target unbound (source ^property ?target)
michael@0:      */
michael@0:     nsRDFPropertyTestNode(TestNode* aParent,
michael@0:                           nsXULTemplateQueryProcessorRDF* aProcessor,
michael@0:                           nsIRDFResource* aSource,
michael@0:                           nsIRDFResource* aProperty,
michael@0:                           nsIAtom* aTargetVariable);
michael@0: 
michael@0:     /**
michael@0:      * Source unbound, target bound (?source ^property target)
michael@0:      */
michael@0:     nsRDFPropertyTestNode(TestNode* aParent,
michael@0:                           nsXULTemplateQueryProcessorRDF* aProcessor,
michael@0:                           nsIAtom* aSourceVariable,
michael@0:                           nsIRDFResource* aProperty,
michael@0:                           nsIRDFNode* aTarget);
michael@0: 
michael@0:     virtual nsresult FilterInstantiations(InstantiationSet& aInstantiations,
michael@0:                                           bool* aCantHandleYet) const MOZ_OVERRIDE;
michael@0: 
michael@0:     virtual bool
michael@0:     CanPropagate(nsIRDFResource* aSource,
michael@0:                  nsIRDFResource* aProperty,
michael@0:                  nsIRDFNode* aTarget,
michael@0:                  Instantiation& aInitialBindings) const MOZ_OVERRIDE;
michael@0: 
michael@0:     virtual void
michael@0:     Retract(nsIRDFResource* aSource,
michael@0:             nsIRDFResource* aProperty,
michael@0:             nsIRDFNode* aTarget) const MOZ_OVERRIDE;
michael@0: 
michael@0: 
michael@0:     class Element : public MemoryElement {
michael@0:     public:
michael@0:         Element(nsIRDFResource* aSource,
michael@0:                 nsIRDFResource* aProperty,
michael@0:                 nsIRDFNode* aTarget)
michael@0:             : mSource(aSource),
michael@0:               mProperty(aProperty),
michael@0:               mTarget(aTarget) {
michael@0:             MOZ_COUNT_CTOR(nsRDFPropertyTestNode::Element); }
michael@0: 
michael@0:         virtual ~Element() { MOZ_COUNT_DTOR(nsRDFPropertyTestNode::Element); }
michael@0: 
michael@0:         virtual const char* Type() const MOZ_OVERRIDE {
michael@0:             return "nsRDFPropertyTestNode::Element"; }
michael@0: 
michael@0:         virtual PLHashNumber Hash() const MOZ_OVERRIDE {
michael@0:             return mozilla::HashGeneric(mSource.get(), mProperty.get(), mTarget.get());
michael@0:         }
michael@0: 
michael@0:         virtual bool Equals(const MemoryElement& aElement) const MOZ_OVERRIDE {
michael@0:             if (aElement.Type() == Type()) {
michael@0:                 const Element& element = static_cast<const Element&>(aElement);
michael@0:                 return mSource == element.mSource
michael@0:                     && mProperty == element.mProperty
michael@0:                     && mTarget == element.mTarget;
michael@0:             }
michael@0:             return false; }
michael@0: 
michael@0:     protected:
michael@0:         nsCOMPtr<nsIRDFResource> mSource;
michael@0:         nsCOMPtr<nsIRDFResource> mProperty;
michael@0:         nsCOMPtr<nsIRDFNode> mTarget;
michael@0:     };
michael@0: 
michael@0: protected:
michael@0:     nsXULTemplateQueryProcessorRDF* mProcessor;
michael@0:     nsCOMPtr<nsIAtom>        mSourceVariable;
michael@0:     nsCOMPtr<nsIRDFResource> mSource;
michael@0:     nsCOMPtr<nsIRDFResource> mProperty;
michael@0:     nsCOMPtr<nsIAtom>        mTargetVariable;
michael@0:     nsCOMPtr<nsIRDFNode>     mTarget;
michael@0: };
michael@0: 
michael@0: #endif // nsRDFPropertyTestNode_h__