michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsXPathResult_h__
michael@0: #define nsXPathResult_h__
michael@0: 
michael@0: #include "txExprResult.h"
michael@0: #include "nsIDOMXPathResult.h"
michael@0: #include "nsStubMutationObserver.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsCOMArray.h"
michael@0: #include "nsWeakPtr.h"
michael@0: #include "nsCycleCollectionParticipant.h"
michael@0: #include "mozilla/Attributes.h"
michael@0: 
michael@0: class nsIDocument;
michael@0: 
michael@0: // {662f2c9a-c7cd-4cab-9349-e733df5a838c}
michael@0: #define NS_IXPATHRESULT_IID \
michael@0: { 0x662f2c9a, 0xc7cd, 0x4cab, {0x93, 0x49, 0xe7, 0x33, 0xdf, 0x5a, 0x83, 0x8c }}
michael@0: 
michael@0: class nsIXPathResult : public nsISupports
michael@0: {
michael@0: public:
michael@0:     NS_DECLARE_STATIC_IID_ACCESSOR(NS_IXPATHRESULT_IID)
michael@0:     virtual nsresult SetExprResult(txAExprResult *aExprResult,
michael@0:                                    uint16_t aResultType,
michael@0:                                    nsINode* aContextNode) = 0;
michael@0:     virtual nsresult GetExprResult(txAExprResult **aExprResult) = 0;
michael@0:     virtual nsresult Clone(nsIXPathResult **aResult) = 0;
michael@0: };
michael@0: 
michael@0: NS_DEFINE_STATIC_IID_ACCESSOR(nsIXPathResult, NS_IXPATHRESULT_IID)
michael@0: 
michael@0: /**
michael@0:  * A class for evaluating an XPath expression string
michael@0:  */
michael@0: class nsXPathResult MOZ_FINAL : public nsIDOMXPathResult,
michael@0:                                 public nsStubMutationObserver,
michael@0:                                 public nsIXPathResult
michael@0: {
michael@0: public:
michael@0:     nsXPathResult();
michael@0:     nsXPathResult(const nsXPathResult &aResult);
michael@0:     ~nsXPathResult();
michael@0: 
michael@0:     // nsISupports interface
michael@0:     NS_DECL_CYCLE_COLLECTING_ISUPPORTS
michael@0:     NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXPathResult, nsIDOMXPathResult)
michael@0: 
michael@0:     // nsIDOMXPathResult interface
michael@0:     NS_DECL_NSIDOMXPATHRESULT
michael@0: 
michael@0:     // nsIMutationObserver interface
michael@0:     NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
michael@0:     NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
michael@0:     NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
michael@0:     NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
michael@0:     NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
michael@0:     NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
michael@0: 
michael@0:     // nsIXPathResult interface
michael@0:     nsresult SetExprResult(txAExprResult *aExprResult, uint16_t aResultType,
michael@0:                            nsINode* aContextNode) MOZ_OVERRIDE;
michael@0:     nsresult GetExprResult(txAExprResult **aExprResult) MOZ_OVERRIDE;
michael@0:     nsresult Clone(nsIXPathResult **aResult) MOZ_OVERRIDE;
michael@0:     void RemoveObserver();
michael@0: private:
michael@0:     static bool isSnapshot(uint16_t aResultType)
michael@0:     {
michael@0:         return aResultType == UNORDERED_NODE_SNAPSHOT_TYPE ||
michael@0:                aResultType == ORDERED_NODE_SNAPSHOT_TYPE;
michael@0:     }
michael@0:     static bool isIterator(uint16_t aResultType)
michael@0:     {
michael@0:         return aResultType == UNORDERED_NODE_ITERATOR_TYPE ||
michael@0:                aResultType == ORDERED_NODE_ITERATOR_TYPE;
michael@0:     }
michael@0:     static bool isNode(uint16_t aResultType)
michael@0:     {
michael@0:         return aResultType == FIRST_ORDERED_NODE_TYPE ||
michael@0:                aResultType == ANY_UNORDERED_NODE_TYPE;
michael@0:     }
michael@0:     bool isSnapshot() const
michael@0:     {
michael@0:         return isSnapshot(mResultType);
michael@0:     }
michael@0:     bool isIterator() const
michael@0:     {
michael@0:         return isIterator(mResultType);
michael@0:     }
michael@0:     bool isNode() const
michael@0:     {
michael@0:         return isNode(mResultType);
michael@0:     }
michael@0: 
michael@0:     void Invalidate(const nsIContent* aChangeRoot);
michael@0: 
michael@0:     nsRefPtr<txAExprResult> mResult;
michael@0:     nsCOMArray<nsIDOMNode> mResultNodes;
michael@0:     nsCOMPtr<nsIDocument> mDocument;
michael@0:     uint32_t mCurrentPos;
michael@0:     uint16_t mResultType;
michael@0:     nsWeakPtr mContextNode;
michael@0:     bool mInvalidIteratorState;
michael@0:     bool mBooleanResult;
michael@0:     double mNumberResult;
michael@0:     nsString mStringResult;
michael@0: };
michael@0: 
michael@0: #endif