content/xul/templates/src/nsXULTemplateResultSetRDF.h

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   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
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  14  *
  15  * The Original Code is mozilla.org code.
  16  *
  17  * The Initial Developer of the Original Code is Neil Deakin
  18  * Portions created by the Initial Developer are Copyright (C) 2005
  19  * the Initial Developer. All Rights Reserved.
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  23  * Alternatively, the contents of this file may be used under the terms of
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  35  * ***** END LICENSE BLOCK ***** */
  36
  37 #ifndef nsXULTemplateResultSetRDF_h__
  38 #define nsXULTemplateResultSetRDF_h__
  39
  40 #include "nsFixedSizeAllocator.h"
  41 #include "nsISimpleEnumerator.h"
  42 #include "nsRuleNetwork.h"
  43 #include "nsRDFQuery.h"
  44 #include "nsXULTemplateResultRDF.h"
  45
  46 class nsXULTemplateQueryProcessorRDF;
  47 class nsXULTemplateResultRDF;
  48
  49 /**
  50  * An enumerator used to iterate over a set of results.
  51  */
  52 class nsXULTemplateResultSetRDF : public nsISimpleEnumerator
  53 {
  54 private:
  55     nsXULTemplateQueryProcessorRDF* mProcessor;
  56
  57     nsRDFQuery* mQuery;
  58
  59     const InstantiationSet* mInstantiations;
  60
  61     nsCOMPtr<nsIRDFResource> mResource;
  62
  63     InstantiationSet::List *mCurrent;
  64
  65     PRBool mCheckedNext;
  66
  67 public:
  68
  69     // nsISupports interface
  70     NS_DECL_ISUPPORTS
  71
  72     // nsISimpleEnumerator interface
  73     NS_DECL_NSISIMPLEENUMERATOR
  74
  75     nsXULTemplateResultSetRDF(nsXULTemplateQueryProcessorRDF *aProcessor,
  76                               nsRDFQuery* aQuery,
  77                               const InstantiationSet* aInstantiations)
  78         : mProcessor(aProcessor),
  79           mQuery(aQuery),
  80           mInstantiations(aInstantiations),
  81           mCurrent(nsnull),
  82           mCheckedNext(PR_FALSE)
  83     { }
  84
  85     ~nsXULTemplateResultSetRDF()
  86     {
  87         delete mInstantiations;
  88     }
  89 };
  90
  91 #endif // nsXULTemplateResultSetRDF_h__