Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef nsRDFPropertyTestNode_h__
       7             : #define nsRDFPropertyTestNode_h__
       8             : 
       9             : #include "mozilla/Attributes.h"
      10             : #include "nscore.h"
      11             : #include "nsRDFTestNode.h"
      12             : #include "nsIRDFDataSource.h"
      13             : #include "nsIRDFResource.h"
      14             : #include "nsXULTemplateQueryProcessorRDF.h"
      15             : 
      16           0 : class nsRDFPropertyTestNode : public nsRDFTestNode
      17             : {
      18             : public:
      19             :     /**
      20             :      * Both source and target unbound (?source ^property ?target)
      21             :      */
      22             :     nsRDFPropertyTestNode(TestNode* aParent,
      23             :                           nsXULTemplateQueryProcessorRDF* aProcessor,
      24             :                           nsIAtom* aSourceVariable,
      25             :                           nsIRDFResource* aProperty,
      26             :                           nsIAtom* aTargetVariable);
      27             : 
      28             :     /**
      29             :      * Source bound, target unbound (source ^property ?target)
      30             :      */
      31             :     nsRDFPropertyTestNode(TestNode* aParent,
      32             :                           nsXULTemplateQueryProcessorRDF* aProcessor,
      33             :                           nsIRDFResource* aSource,
      34             :                           nsIRDFResource* aProperty,
      35             :                           nsIAtom* aTargetVariable);
      36             : 
      37             :     /**
      38             :      * Source unbound, target bound (?source ^property target)
      39             :      */
      40             :     nsRDFPropertyTestNode(TestNode* aParent,
      41             :                           nsXULTemplateQueryProcessorRDF* aProcessor,
      42             :                           nsIAtom* aSourceVariable,
      43             :                           nsIRDFResource* aProperty,
      44             :                           nsIRDFNode* aTarget);
      45             : 
      46             :     virtual nsresult FilterInstantiations(InstantiationSet& aInstantiations,
      47             :                                           bool* aCantHandleYet) const override;
      48             : 
      49             :     virtual bool
      50             :     CanPropagate(nsIRDFResource* aSource,
      51             :                  nsIRDFResource* aProperty,
      52             :                  nsIRDFNode* aTarget,
      53             :                  Instantiation& aInitialBindings) const override;
      54             : 
      55             :     virtual void
      56             :     Retract(nsIRDFResource* aSource,
      57             :             nsIRDFResource* aProperty,
      58             :             nsIRDFNode* aTarget) const override;
      59             : 
      60             : 
      61             :     class Element : public MemoryElement {
      62             :     public:
      63           0 :         Element(nsIRDFResource* aSource,
      64             :                 nsIRDFResource* aProperty,
      65             :                 nsIRDFNode* aTarget)
      66           0 :             : mSource(aSource),
      67             :               mProperty(aProperty),
      68           0 :               mTarget(aTarget) {
      69           0 :             MOZ_COUNT_CTOR(nsRDFPropertyTestNode::Element); }
      70             : 
      71           0 :         virtual ~Element() { MOZ_COUNT_DTOR(nsRDFPropertyTestNode::Element); }
      72             : 
      73           0 :         virtual const char* Type() const override {
      74           0 :             return "nsRDFPropertyTestNode::Element"; }
      75             : 
      76           0 :         virtual PLHashNumber Hash() const override {
      77           0 :             return mozilla::HashGeneric(mSource.get(), mProperty.get(), mTarget.get());
      78             :         }
      79             : 
      80           0 :         virtual bool Equals(const MemoryElement& aElement) const override {
      81           0 :             if (aElement.Type() == Type()) {
      82           0 :                 const Element& element = static_cast<const Element&>(aElement);
      83           0 :                 return mSource == element.mSource
      84           0 :                     && mProperty == element.mProperty
      85           0 :                     && mTarget == element.mTarget;
      86             :             }
      87           0 :             return false; }
      88             : 
      89             :     protected:
      90             :         nsCOMPtr<nsIRDFResource> mSource;
      91             :         nsCOMPtr<nsIRDFResource> mProperty;
      92             :         nsCOMPtr<nsIRDFNode> mTarget;
      93             :     };
      94             : 
      95             : protected:
      96             :     nsXULTemplateQueryProcessorRDF* mProcessor;
      97             :     nsCOMPtr<nsIAtom>        mSourceVariable;
      98             :     nsCOMPtr<nsIRDFResource> mSource;
      99             :     nsCOMPtr<nsIRDFResource> mProperty;
     100             :     nsCOMPtr<nsIAtom>        mTargetVariable;
     101             :     nsCOMPtr<nsIRDFNode>     mTarget;
     102             : };
     103             : 
     104             : #endif // nsRDFPropertyTestNode_h__