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 atom lists for CSS pseudos.
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 : * L. David Baron <dbaron@dbaron.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 : /* atom list for CSS pseudo-elements */
40 :
41 : #ifndef nsCSSPseudoElements_h___
42 : #define nsCSSPseudoElements_h___
43 :
44 : #include "nsIAtom.h"
45 :
46 : // Is this pseudo-element a CSS2 pseudo-element that can be specified
47 : // with the single colon syntax (in addition to the double-colon syntax,
48 : // which can be used for all pseudo-elements)?
49 : #define CSS_PSEUDO_ELEMENT_IS_CSS2 (1<<0)
50 : // Is this pseudo-element a pseudo-element that can contain other
51 : // elements?
52 : // (Currently pseudo-elements are either leaves of the tree (relative to
53 : // real elements) or they contain other elements in a non-tree-like
54 : // manner (i.e., like incorrectly-nested start and end tags). It's
55 : // possible that in the future there might be container pseudo-elements
56 : // that form a properly nested tree structure. If that happens, we
57 : // should probably split this flag into two.)
58 : #define CSS_PSEUDO_ELEMENT_CONTAINS_ELEMENTS (1<<1)
59 :
60 : // Empty class derived from nsIAtom so that function signatures can
61 : // require an atom from this atom list.
62 : class nsICSSPseudoElement : public nsIAtom {};
63 :
64 : class nsCSSPseudoElements {
65 : public:
66 :
67 : static void AddRefAtoms();
68 :
69 : static bool IsPseudoElement(nsIAtom *aAtom);
70 :
71 : static bool IsCSS2PseudoElement(nsIAtom *aAtom);
72 :
73 0 : static bool PseudoElementContainsElements(nsIAtom *aAtom) {
74 0 : return PseudoElementHasFlags(aAtom, CSS_PSEUDO_ELEMENT_CONTAINS_ELEMENTS);
75 : }
76 :
77 : #define CSS_PSEUDO_ELEMENT(_name, _value, _flags) \
78 : static nsICSSPseudoElement* _name;
79 : #include "nsCSSPseudoElementList.h"
80 : #undef CSS_PSEUDO_ELEMENT
81 :
82 : enum Type {
83 : // If the actual pseudo-elements stop being first here, change
84 : // GetPseudoType.
85 : #define CSS_PSEUDO_ELEMENT(_name, _value_, _flags) \
86 : ePseudo_##_name,
87 : #include "nsCSSPseudoElementList.h"
88 : #undef CSS_PSEUDO_ELEMENT
89 : ePseudo_PseudoElementCount,
90 : ePseudo_AnonBox = ePseudo_PseudoElementCount,
91 : #ifdef MOZ_XUL
92 : ePseudo_XULTree,
93 : #endif
94 : ePseudo_NotPseudoElement,
95 : ePseudo_MAX
96 : };
97 :
98 : static Type GetPseudoType(nsIAtom* aAtom);
99 :
100 : // Get the atom for a given Type. aType must be < ePseudo_PseudoElementCount
101 : static nsIAtom* GetPseudoAtom(Type aType);
102 :
103 : private:
104 : static PRUint32 FlagsForPseudoElement(nsIAtom *aAtom);
105 :
106 : // Does the given pseudo-element have all of the flags given?
107 0 : static bool PseudoElementHasFlags(nsIAtom *aAtom, PRUint32 aFlags)
108 : {
109 0 : return (FlagsForPseudoElement(aAtom) & aFlags) == aFlags;
110 : }
111 : };
112 :
113 : #endif /* nsCSSPseudoElements_h___ */
|