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
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 : #include "nsContentTestNode.h"
40 : #include "nsIRDFResource.h"
41 : #include "nsIAtom.h"
42 : #include "nsIDOMElement.h"
43 : #include "nsXULContentUtils.h"
44 : #include "nsIXULTemplateResult.h"
45 : #include "nsIXULTemplateBuilder.h"
46 : #include "nsXULTemplateQueryProcessorRDF.h"
47 :
48 : #include "prlog.h"
49 : #ifdef PR_LOGGING
50 : extern PRLogModuleInfo* gXULTemplateLog;
51 : #endif
52 :
53 0 : nsContentTestNode::nsContentTestNode(nsXULTemplateQueryProcessorRDF* aProcessor,
54 : nsIAtom* aRefVariable)
55 : : TestNode(nsnull),
56 : mProcessor(aProcessor),
57 : mDocument(nsnull),
58 : mRefVariable(aRefVariable),
59 0 : mTag(nsnull)
60 : {
61 : #ifdef PR_LOGGING
62 0 : if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
63 0 : nsAutoString tag(NS_LITERAL_STRING("(none)"));
64 0 : if (mTag)
65 0 : mTag->ToString(tag);
66 :
67 0 : nsAutoString refvar(NS_LITERAL_STRING("(none)"));
68 0 : if (aRefVariable)
69 0 : aRefVariable->ToString(refvar);
70 :
71 0 : PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
72 : ("nsContentTestNode[%p]: ref-var=%s tag=%s",
73 : this, NS_ConvertUTF16toUTF8(refvar).get(),
74 : NS_ConvertUTF16toUTF8(tag).get()));
75 : }
76 : #endif
77 0 : }
78 :
79 : nsresult
80 0 : nsContentTestNode::FilterInstantiations(InstantiationSet& aInstantiations,
81 : bool* aCantHandleYet) const
82 :
83 : {
84 0 : if (aCantHandleYet)
85 0 : *aCantHandleYet = false;
86 0 : return NS_OK;
87 : }
88 :
89 : nsresult
90 0 : nsContentTestNode::Constrain(InstantiationSet& aInstantiations)
91 : {
92 : // contrain the matches to those that have matched in the template builder
93 :
94 0 : nsIXULTemplateBuilder* builder = mProcessor->GetBuilder();
95 0 : if (!builder) {
96 0 : aInstantiations.Clear();
97 0 : return NS_OK;
98 : }
99 :
100 : nsresult rv;
101 :
102 0 : InstantiationSet::Iterator last = aInstantiations.Last();
103 0 : for (InstantiationSet::Iterator inst = aInstantiations.First(); inst != last; ++inst) {
104 :
105 0 : nsCOMPtr<nsIRDFNode> refValue;
106 0 : bool hasRefBinding = inst->mAssignments.GetAssignmentFor(mRefVariable,
107 0 : getter_AddRefs(refValue));
108 0 : if (hasRefBinding) {
109 0 : nsCOMPtr<nsIRDFResource> refResource = do_QueryInterface(refValue);
110 0 : if (refResource) {
111 : bool generated;
112 0 : rv = builder->HasGeneratedContent(refResource, mTag, &generated);
113 0 : if (NS_FAILED(rv)) return rv;
114 :
115 0 : if (generated)
116 0 : continue;
117 : }
118 : }
119 :
120 0 : aInstantiations.Erase(inst--);
121 : }
122 :
123 0 : return NS_OK;
124 : }
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