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       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 mozilla_dom_XPathExpression_h
       7             : #define mozilla_dom_XPathExpression_h
       8             : 
       9             : #include "nsAutoPtr.h"
      10             : #include "nsCycleCollectionParticipant.h"
      11             : #include "nsIWeakReferenceUtils.h"
      12             : #include "mozilla/Attributes.h"
      13             : #include "mozilla/dom/NonRefcountedDOMObject.h"
      14             : #include "mozilla/dom/XPathExpressionBinding.h"
      15             : 
      16             : class Expr;
      17             : class nsIDocument;
      18             : class nsINode;
      19             : class txResultRecycler;
      20             : 
      21             : namespace mozilla {
      22             : namespace dom {
      23             : 
      24             : class XPathResult;
      25             : 
      26             : /**
      27             :  * A class for evaluating an XPath expression string
      28             :  */
      29             : class XPathExpression final : public NonRefcountedDOMObject
      30             : {
      31             : public:
      32             :     XPathExpression(nsAutoPtr<Expr>&& aExpression, txResultRecycler* aRecycler,
      33             :                     nsIDocument *aDocument);
      34             :     ~XPathExpression();
      35             : 
      36           0 :     bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
      37             :     {
      38           0 :         return XPathExpressionBinding::Wrap(aCx, this, aGivenProto, aReflector);
      39             :     }
      40             : 
      41             :     already_AddRefed<XPathResult>
      42           0 :         Evaluate(JSContext* aCx, nsINode& aContextNode, uint16_t aType,
      43             :                  JS::Handle<JSObject*> aInResult, ErrorResult& aRv)
      44             :     {
      45             :         return EvaluateWithContext(aCx, aContextNode, 1, 1, aType, aInResult,
      46           0 :                                    aRv);
      47             :     }
      48             :     already_AddRefed<XPathResult>
      49             :         EvaluateWithContext(JSContext* aCx, nsINode& aContextNode,
      50             :                             uint32_t aContextPosition, uint32_t aContextSize,
      51             :                             uint16_t aType, JS::Handle<JSObject*> aInResult,
      52             :                             ErrorResult& aRv);
      53             :     already_AddRefed<XPathResult>
      54           0 :         Evaluate(nsINode& aContextNode, uint16_t aType, XPathResult* aInResult,
      55             :                  ErrorResult& aRv)
      56             :     {
      57           0 :         return EvaluateWithContext(aContextNode, 1, 1, aType, aInResult, aRv);
      58             :     }
      59             :     already_AddRefed<XPathResult>
      60             :         EvaluateWithContext(nsINode& aContextNode, uint32_t aContextPosition,
      61             :                             uint32_t aContextSize, uint16_t aType,
      62             :                             XPathResult* aInResult, ErrorResult& aRv);
      63             : 
      64             : private:
      65             :     nsAutoPtr<Expr> mExpression;
      66             :     RefPtr<txResultRecycler> mRecycler;
      67             :     nsWeakPtr mDocument;
      68             :     bool mCheckDocument;
      69             : };
      70             : 
      71             : } // namespace dom
      72             : } // namespace mozilla
      73             : 
      74             : #endif /* mozilla_dom_XPathExpression_h */