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 Mozilla Communicator client 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) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Chris Waterson <waterson@netscape.com>
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either of the GNU General Public License Version 2 or later (the "GPL"),
27 : * or 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
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36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #ifndef nsContentTestNode_h__
40 : #define nsContentTestNode_h__
41 :
42 : #include "nscore.h"
43 : #include "nsRuleNetwork.h"
44 : #include "nsFixedSizeAllocator.h"
45 : #include "nsIAtom.h"
46 : #include "nsIDOMDocument.h"
47 :
48 : class nsIXULTemplateBuilder;
49 :
50 : /**
51 : * The nsContentTestNode is always the top node in a query's rule network. It
52 : * exists so that Constrain can filter out resources that aren't part of a
53 : * result.
54 : */
55 : class nsContentTestNode : public TestNode
56 0 : {
57 : public:
58 : nsContentTestNode(nsXULTemplateQueryProcessorRDF* aProcessor,
59 : nsIAtom* aContentVariable);
60 :
61 : virtual nsresult FilterInstantiations(InstantiationSet& aInstantiations,
62 : bool* aCantHandleYet) const;
63 :
64 : nsresult
65 : Constrain(InstantiationSet& aInstantiations);
66 :
67 0 : void SetTag(nsIAtom* aTag, nsIDOMDocument* aDocument)
68 : {
69 0 : mTag = aTag;
70 0 : mDocument = aDocument;
71 0 : }
72 :
73 : protected:
74 : nsXULTemplateQueryProcessorRDF *mProcessor;
75 : nsIDOMDocument* mDocument;
76 : nsCOMPtr<nsIAtom> mRefVariable;
77 : nsCOMPtr<nsIAtom> mTag;
78 : };
79 :
80 : #endif // nsContentTestNode_h__
81 :
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