/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef nsXULTemplateQueryProcessorXML_h__ #define nsXULTemplateQueryProcessorXML_h__ #include "nsIXULTemplateBuilder.h" #include "nsIXULTemplateQueryProcessor.h" #include "nsAutoPtr.h" #include "nsISimpleEnumerator.h" #include "nsString.h" #include "nsCOMArray.h" #include "nsRefPtrHashtable.h" #include "nsIDOMEventListener.h" #include "nsIDOMXPathEvaluator.h" #include "nsXMLBinding.h" #include "nsCycleCollectionParticipant.h" #include "nsIXMLHttpRequest.h" #include "mozilla/Attributes.h" #include "mozilla/dom/Element.h" #include "mozilla/dom/XPathEvaluator.h" #include "mozilla/dom/XPathResult.h" class nsXULTemplateQueryProcessorXML; #define NS_IXMLQUERY_IID \ {0x0358d692, 0xccce, 0x4a97, \ { 0xb2, 0x51, 0xba, 0x8f, 0x17, 0x0f, 0x3b, 0x6f }} class nsXMLQuery final : public nsISupports { public: NS_DECLARE_STATIC_IID_ACCESSOR(NS_IXMLQUERY_IID) NS_DECL_ISUPPORTS // return a weak reference to the processor the query was created from nsXULTemplateQueryProcessorXML* Processor() { return mProcessor; } // return a weak reference t the member variable for the query nsIAtom* GetMemberVariable() { return mMemberVariable; } // return a weak reference to the expression used to generate results mozilla::dom::XPathExpression* GetResultsExpression() { return mResultsExpr; } // return a weak reference to the additional required bindings nsXMLBindingSet* GetBindingSet() { return mRequiredBindings; } // add a required binding for the query void AddBinding(nsIAtom* aVar, nsAutoPtr<mozilla::dom::XPathExpression>&& aExpr) { if (!mRequiredBindings) { mRequiredBindings = new nsXMLBindingSet(); } mRequiredBindings->AddBinding(aVar, mozilla::Move(aExpr)); } nsXMLQuery(nsXULTemplateQueryProcessorXML* aProcessor, nsIAtom* aMemberVariable, nsAutoPtr<mozilla::dom::XPathExpression>&& aResultsExpr) : mProcessor(aProcessor), mMemberVariable(aMemberVariable), mResultsExpr(aResultsExpr) { } protected: ~nsXMLQuery() {} nsXULTemplateQueryProcessorXML* mProcessor; nsCOMPtr<nsIAtom> mMemberVariable; nsAutoPtr<mozilla::dom::XPathExpression> mResultsExpr; RefPtr<nsXMLBindingSet> mRequiredBindings; }; NS_DEFINE_STATIC_IID_ACCESSOR(nsXMLQuery, NS_IXMLQUERY_IID) class nsXULTemplateResultSetXML final : public nsISimpleEnumerator { private: // reference back to the query nsCOMPtr<nsXMLQuery> mQuery; // the binding set created from <assign> nodes RefPtr<nsXMLBindingSet> mBindingSet; // set of results contained in this enumerator RefPtr<mozilla::dom::XPathResult> mResults; // current position within the list of results uint32_t mPosition; ~nsXULTemplateResultSetXML() {} public: // nsISupports interface NS_DECL_ISUPPORTS // nsISimpleEnumerator interface NS_DECL_NSISIMPLEENUMERATOR nsXULTemplateResultSetXML(nsXMLQuery* aQuery, already_AddRefed<mozilla::dom::XPathResult> aResults, nsXMLBindingSet* aBindingSet) : mQuery(aQuery), mBindingSet(aBindingSet), mResults(aResults), mPosition(0) {} }; class nsXULTemplateQueryProcessorXML final : public nsIXULTemplateQueryProcessor, public nsIDOMEventListener { public: nsXULTemplateQueryProcessorXML() : mGenerationStarted(false) {} // nsISupports interface NS_DECL_CYCLE_COLLECTING_ISUPPORTS NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXULTemplateQueryProcessorXML, nsIXULTemplateQueryProcessor) // nsIXULTemplateQueryProcessor interface NS_DECL_NSIXULTEMPLATEQUERYPROCESSOR // nsIDOMEventListener interface NS_DECL_NSIDOMEVENTLISTENER nsXMLBindingSet* GetOptionalBindingsForRule(nsIDOMNode* aRuleNode); // create an XPath expression from aExpr, using aNode for // resolving namespaces mozilla::dom::XPathExpression* CreateExpression(const nsAString& aExpr, nsINode* aNode, mozilla::ErrorResult& aRv); private: ~nsXULTemplateQueryProcessorXML() {} bool mGenerationStarted; nsRefPtrHashtable<nsISupportsHashKey, nsXMLBindingSet> mRuleToBindingsMap; nsCOMPtr<mozilla::dom::Element> mRoot; RefPtr<mozilla::dom::XPathEvaluator> mEvaluator; nsCOMPtr<nsIXULTemplateBuilder> mTemplateBuilder; nsCOMPtr<nsIXMLHttpRequest> mRequest; }; #endif // nsXULTemplateQueryProcessorXML_h__