зеркало из https://github.com/mozilla/gecko-dev.git
79 строки
2.4 KiB
C++
79 строки
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_XPathEvaluator_h
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#define mozilla_dom_XPathEvaluator_h
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#include "mozilla/dom/NonRefcountedDOMObject.h"
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#include "nsIWeakReference.h"
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#include "nsAutoPtr.h"
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#include "nsString.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/ErrorResult.h"
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#include "nsIDocument.h"
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class nsINode;
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class txIParseContext;
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class txResultRecycler;
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namespace mozilla {
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namespace dom {
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class GlobalObject;
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class XPathExpression;
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class XPathNSResolver;
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class XPathResult;
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/**
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* A class for evaluating an XPath expression string
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*/
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class XPathEvaluator final : public NonRefcountedDOMObject
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{
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public:
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explicit XPathEvaluator(nsIDocument* aDocument = nullptr);
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~XPathEvaluator();
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// WebIDL API
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bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector);
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nsIDocument* GetParentObject()
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{
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nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocument);
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return doc;
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}
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static XPathEvaluator*
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Constructor(const GlobalObject& aGlobal, ErrorResult& rv);
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XPathExpression*
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CreateExpression(const nsAString& aExpression,
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XPathNSResolver* aResolver,
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ErrorResult& rv);
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XPathExpression*
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CreateExpression(const nsAString& aExpression,
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nsINode* aResolver,
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ErrorResult& aRv);
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nsINode* CreateNSResolver(nsINode& aNodeResolver)
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{
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return &aNodeResolver;
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}
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already_AddRefed<XPathResult>
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Evaluate(JSContext* aCx, const nsAString& aExpression,
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nsINode& aContextNode, XPathNSResolver* aResolver,
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uint16_t aType, JS::Handle<JSObject*> aResult,
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ErrorResult& rv);
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private:
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XPathExpression*
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CreateExpression(const nsAString& aExpression,
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txIParseContext* aContext,
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nsIDocument* aDocument,
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ErrorResult& aRv);
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nsWeakPtr mDocument;
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RefPtr<txResultRecycler> mRecycler;
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};
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} // namespace dom
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} // namespace mozilla
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#endif /* mozilla_dom_XPathEvaluator_h */
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