forked from mozilla/gecko-dev
-
Notifications
You must be signed in to change notification settings - Fork 2
/
nsContentTestNode.cpp
124 lines (109 loc) · 4.27 KB
/
nsContentTestNode.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Waterson <waterson@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsContentTestNode.h"
#include "nsIRDFResource.h"
#include "nsIAtom.h"
#include "nsIDOMElement.h"
#include "nsXULContentUtils.h"
#include "nsIXULTemplateResult.h"
#include "nsIXULTemplateBuilder.h"
#include "nsXULTemplateQueryProcessorRDF.h"
#include "prlog.h"
#ifdef PR_LOGGING
extern PRLogModuleInfo* gXULTemplateLog;
#endif
nsContentTestNode::nsContentTestNode(nsXULTemplateQueryProcessorRDF* aProcessor,
nsIAtom* aRefVariable)
: TestNode(nsnull),
mProcessor(aProcessor),
mDocument(nsnull),
mRefVariable(aRefVariable),
mTag(nsnull)
{
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
nsAutoString tag(NS_LITERAL_STRING("(none)"));
if (mTag)
mTag->ToString(tag);
nsAutoString refvar(NS_LITERAL_STRING("(none)"));
if (aRefVariable)
aRefVariable->ToString(refvar);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
("nsContentTestNode[%p]: ref-var=%s tag=%s",
this, NS_ConvertUTF16toUTF8(refvar).get(),
NS_ConvertUTF16toUTF8(tag).get()));
}
#endif
}
nsresult
nsContentTestNode::FilterInstantiations(InstantiationSet& aInstantiations,
bool* aCantHandleYet) const
{
if (aCantHandleYet)
*aCantHandleYet = false;
return NS_OK;
}
nsresult
nsContentTestNode::Constrain(InstantiationSet& aInstantiations)
{
// contrain the matches to those that have matched in the template builder
nsIXULTemplateBuilder* builder = mProcessor->GetBuilder();
if (!builder) {
aInstantiations.Clear();
return NS_OK;
}
nsresult rv;
InstantiationSet::Iterator last = aInstantiations.Last();
for (InstantiationSet::Iterator inst = aInstantiations.First(); inst != last; ++inst) {
nsCOMPtr<nsIRDFNode> refValue;
bool hasRefBinding = inst->mAssignments.GetAssignmentFor(mRefVariable,
getter_AddRefs(refValue));
if (hasRefBinding) {
nsCOMPtr<nsIRDFResource> refResource = do_QueryInterface(refValue);
if (refResource) {
bool generated;
rv = builder->HasGeneratedContent(refResource, mTag, &generated);
if (NS_FAILED(rv)) return rv;
if (generated)
continue;
}
}
aInstantiations.Erase(inst--);
}
return NS_OK;
}