The Tor Browser: dom/xslt/xpath/nsXPathResult.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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/. */

     6 #ifndef nsXPathResult_h__

     7 #define nsXPathResult_h__

     9 #include "txExprResult.h"

    10 #include "nsIDOMXPathResult.h"

    11 #include "nsStubMutationObserver.h"

    12 #include "nsCOMPtr.h"

    13 #include "nsCOMArray.h"

    14 #include "nsWeakPtr.h"

    15 #include "nsCycleCollectionParticipant.h"

    16 #include "mozilla/Attributes.h"

    18 class nsIDocument;

    20 // {662f2c9a-c7cd-4cab-9349-e733df5a838c}

    21 #define NS_IXPATHRESULT_IID \

    22 { 0x662f2c9a, 0xc7cd, 0x4cab, {0x93, 0x49, 0xe7, 0x33, 0xdf, 0x5a, 0x83, 0x8c }}

    24 class nsIXPathResult : public nsISupports

    25 {

    26 public:

    27     NS_DECLARE_STATIC_IID_ACCESSOR(NS_IXPATHRESULT_IID)

    28     virtual nsresult SetExprResult(txAExprResult *aExprResult,

    29                                    uint16_t aResultType,

    30                                    nsINode* aContextNode) = 0;

    31     virtual nsresult GetExprResult(txAExprResult **aExprResult) = 0;

    32     virtual nsresult Clone(nsIXPathResult **aResult) = 0;

    33 };

    35 NS_DEFINE_STATIC_IID_ACCESSOR(nsIXPathResult, NS_IXPATHRESULT_IID)

    37 /**

    38  * A class for evaluating an XPath expression string

    39  */

    40 class nsXPathResult MOZ_FINAL : public nsIDOMXPathResult,

    41                                 public nsStubMutationObserver,

    42                                 public nsIXPathResult

    43 {

    44 public:

    45     nsXPathResult();

    46     nsXPathResult(const nsXPathResult &aResult);

    47     ~nsXPathResult();

    49     // nsISupports interface

    50     NS_DECL_CYCLE_COLLECTING_ISUPPORTS

    51     NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXPathResult, nsIDOMXPathResult)

    53     // nsIDOMXPathResult interface

    54     NS_DECL_NSIDOMXPATHRESULT

    56     // nsIMutationObserver interface

    57     NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED

    58     NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED

    59     NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED

    60     NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED

    61     NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED

    62     NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED

    64     // nsIXPathResult interface

    65     nsresult SetExprResult(txAExprResult *aExprResult, uint16_t aResultType,

    66                            nsINode* aContextNode) MOZ_OVERRIDE;

    67     nsresult GetExprResult(txAExprResult **aExprResult) MOZ_OVERRIDE;

    68     nsresult Clone(nsIXPathResult **aResult) MOZ_OVERRIDE;

    69     void RemoveObserver();

    70 private:

    71     static bool isSnapshot(uint16_t aResultType)

    72     {

    73         return aResultType == UNORDERED_NODE_SNAPSHOT_TYPE ||

    74                aResultType == ORDERED_NODE_SNAPSHOT_TYPE;

    75     }

    76     static bool isIterator(uint16_t aResultType)

    77     {

    78         return aResultType == UNORDERED_NODE_ITERATOR_TYPE ||

    79                aResultType == ORDERED_NODE_ITERATOR_TYPE;

    80     }

    81     static bool isNode(uint16_t aResultType)

    82     {

    83         return aResultType == FIRST_ORDERED_NODE_TYPE ||

    84                aResultType == ANY_UNORDERED_NODE_TYPE;

    85     }

    86     bool isSnapshot() const

    87     {

    88         return isSnapshot(mResultType);

    89     }

    90     bool isIterator() const

    91     {

    92         return isIterator(mResultType);

    93     }

    94     bool isNode() const

    95     {

    96         return isNode(mResultType);

    97     }

    99     void Invalidate(const nsIContent* aChangeRoot);

   101     nsRefPtr<txAExprResult> mResult;

   102     nsCOMArray<nsIDOMNode> mResultNodes;

   103     nsCOMPtr<nsIDocument> mDocument;

   104     uint32_t mCurrentPos;

   105     uint16_t mResultType;

   106     nsWeakPtr mContextNode;

   107     bool mInvalidIteratorState;

   108     bool mBooleanResult;

   109     double mNumberResult;

   110     nsString mStringResult;

   111 };

   113 #endif

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