1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 the Mozilla SVG project.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Robert Longson <longsonr@gmail.com>
19 : * Portions created by the Initial Developer are Copyright (C) 2011
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either of the GNU General Public License Version 2 or later (the "GPL"),
26 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #ifndef MOZILLA_DOMSVGTESTS_H__
39 : #define MOZILLA_DOMSVGTESTS_H__
40 :
41 : #include "nsIDOMSVGTests.h"
42 : #include "nsStringFwd.h"
43 : #include "SVGStringList.h"
44 :
45 : class nsAttrValue;
46 : class nsIAtom;
47 : class nsString;
48 :
49 : namespace mozilla {
50 : class DOMSVGStringList;
51 : }
52 :
53 : class DOMSVGTests : public nsIDOMSVGTests
54 0 : {
55 : public:
56 : NS_DECL_ISUPPORTS
57 : NS_DECL_NSIDOMSVGTESTS
58 :
59 : friend class mozilla::DOMSVGStringList;
60 : typedef mozilla::SVGStringList SVGStringList;
61 :
62 : DOMSVGTests();
63 :
64 : /**
65 : * Compare the language name(s) in a systemLanguage attribute to the
66 : * user's language preferences, as defined in
67 : * http://www.w3.org/TR/SVG11/struct.html#SystemLanguageAttribute
68 : * We have a match if a language name in the users language preferences
69 : * exactly equals one of the language names or exactly equals a prefix of
70 : * one of the language names in the systemLanguage attribute.
71 : * @returns 2 * the lowest index in the aAcceptLangs that matches + 1
72 : * if only the prefix matches, or -1 if no indices match.
73 : * XXX This algorithm is O(M*N).
74 : */
75 : PRInt32 GetBestLanguagePreferenceRank(const nsSubstring& aAcceptLangs) const;
76 :
77 : /**
78 : * Special value to pass to PassesConditionalProcessingTests to ignore systemLanguage
79 : * attributes
80 : */
81 : static const nsString * const kIgnoreSystemLanguage;
82 :
83 : /**
84 : * Check whether the conditional processing attributes requiredFeatures,
85 : * requiredExtensions and systemLanguage all "return true" if they apply to
86 : * and are specified on the given element. Returns true if this element
87 : * should be rendered, false if it should not.
88 : *
89 : * @param aAcceptLangs Optional parameter to pass in the value of the
90 : * intl.accept_languages preference if the caller has it cached.
91 : * Alternatively, pass in kIgnoreSystemLanguage to skip the systemLanguage
92 : * check if the caller is giving that special treatment.
93 : */
94 : bool PassesConditionalProcessingTests(
95 : const nsString *aAcceptLangs = nsnull) const;
96 :
97 : /**
98 : * Returns true if the attribute is one of the conditional processing
99 : * attributes.
100 : */
101 : bool IsConditionalProcessingAttribute(const nsIAtom* aAttribute) const;
102 :
103 : bool ParseConditionalProcessingAttribute(
104 : nsIAtom* aAttribute,
105 : const nsAString& aValue,
106 : nsAttrValue& aResult);
107 :
108 : /**
109 : * Unsets a conditional processing attribute.
110 : */
111 : void UnsetAttr(const nsIAtom* aAttribute);
112 :
113 : nsIAtom* GetAttrName(PRUint8 aAttrEnum) const;
114 : void GetAttrValue(PRUint8 aAttrEnum, nsAttrValue &aValue) const;
115 :
116 : void MaybeInvalidate();
117 :
118 : private:
119 : enum { FEATURES, EXTENSIONS, LANGUAGE };
120 : SVGStringList mStringListAttributes[3];
121 : static nsIAtom** sStringListNames[3];
122 : };
123 :
124 : #endif // MOZILLA_DOMSVGTESTS_H__
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