1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is TransforMiiX XSLT processor code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 2001
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Peter Van der Beken <peterv@propagandism.org>
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #ifndef nsXPathResult_h__
40 : #define nsXPathResult_h__
41 :
42 : #include "txExprResult.h"
43 : #include "nsIDOMXPathResult.h"
44 : #include "nsIDocument.h"
45 : #include "nsStubMutationObserver.h"
46 : #include "nsCOMPtr.h"
47 : #include "nsCOMArray.h"
48 : #include "nsWeakPtr.h"
49 : #include "nsCycleCollectionParticipant.h"
50 :
51 : // {662f2c9a-c7cd-4cab-9349-e733df5a838c}
52 : #define NS_IXPATHRESULT_IID \
53 : { 0x662f2c9a, 0xc7cd, 0x4cab, {0x93, 0x49, 0xe7, 0x33, 0xdf, 0x5a, 0x83, 0x8c }}
54 :
55 : class nsIXPathResult : public nsISupports
56 42 : {
57 : public:
58 : NS_DECLARE_STATIC_IID_ACCESSOR(NS_IXPATHRESULT_IID)
59 : virtual nsresult SetExprResult(txAExprResult *aExprResult,
60 : PRUint16 aResultType,
61 : nsINode* aContextNode) = 0;
62 : virtual nsresult GetExprResult(txAExprResult **aExprResult) = 0;
63 : virtual nsresult Clone(nsIXPathResult **aResult) = 0;
64 : };
65 :
66 : NS_DEFINE_STATIC_IID_ACCESSOR(nsIXPathResult, NS_IXPATHRESULT_IID)
67 :
68 : /**
69 : * A class for evaluating an XPath expression string
70 : */
71 : class nsXPathResult : public nsIDOMXPathResult,
72 : public nsStubMutationObserver,
73 : public nsIXPathResult
74 : {
75 : public:
76 : nsXPathResult();
77 : nsXPathResult(const nsXPathResult &aResult);
78 : ~nsXPathResult();
79 :
80 : // nsISupports interface
81 26 : NS_DECL_CYCLE_COLLECTING_ISUPPORTS
82 2228 : NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXPathResult, nsIDOMXPathResult)
83 :
84 : // nsIDOMXPathResult interface
85 : NS_DECL_NSIDOMXPATHRESULT
86 :
87 : // nsIMutationObserver interface
88 : NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
89 : NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
90 : NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
91 : NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
92 : NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
93 : NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
94 :
95 : // nsIXPathResult interface
96 : nsresult SetExprResult(txAExprResult *aExprResult, PRUint16 aResultType,
97 : nsINode* aContextNode);
98 : nsresult GetExprResult(txAExprResult **aExprResult);
99 : nsresult Clone(nsIXPathResult **aResult);
100 : void RemoveObserver();
101 : private:
102 42 : static bool isSnapshot(PRUint16 aResultType)
103 : {
104 : return aResultType == UNORDERED_NODE_SNAPSHOT_TYPE ||
105 42 : aResultType == ORDERED_NODE_SNAPSHOT_TYPE;
106 : }
107 84 : static bool isIterator(PRUint16 aResultType)
108 : {
109 : return aResultType == UNORDERED_NODE_ITERATOR_TYPE ||
110 84 : aResultType == ORDERED_NODE_ITERATOR_TYPE;
111 : }
112 84 : static bool isNode(PRUint16 aResultType)
113 : {
114 : return aResultType == FIRST_ORDERED_NODE_TYPE ||
115 84 : aResultType == ANY_UNORDERED_NODE_TYPE;
116 : }
117 0 : bool isSnapshot() const
118 : {
119 0 : return isSnapshot(mResultType);
120 : }
121 42 : bool isIterator() const
122 : {
123 42 : return isIterator(mResultType);
124 : }
125 42 : bool isNode() const
126 : {
127 42 : return isNode(mResultType);
128 : }
129 :
130 : void Invalidate(const nsIContent* aChangeRoot);
131 :
132 : nsRefPtr<txAExprResult> mResult;
133 : nsCOMArray<nsIDOMNode> mResultNodes;
134 : nsCOMPtr<nsIDocument> mDocument;
135 : PRUint32 mCurrentPos;
136 : PRUint16 mResultType;
137 : nsWeakPtr mContextNode;
138 : bool mInvalidIteratorState;
139 : bool mBooleanResult;
140 : double mNumberResult;
141 : nsString mStringResult;
142 : };
143 :
144 : #endif
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