layout/style/nsCSSPseudoClasses.cpp

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   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
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  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-classes */
  40
  41 #include "nsCSSPseudoClasses.h"
  42 #include "nsAtomListUtils.h"
  43 #include "nsStaticAtom.h"
  44 #include "nsMemory.h"
  45
  46 // define storage for all atoms
  47 #define CSS_PSEUDO_CLASS(_name, _value) \
  48   nsICSSPseudoClass* nsCSSPseudoClasses::_name;
  49 #include "nsCSSPseudoClassList.h"
  50 #undef CSS_PSEUDO_CLASS
  51
  52 static const nsStaticAtom CSSPseudoClasses_info[] = {
  53 #define CSS_PSEUDO_CLASS(name_, value_) \
  54   { value_, (nsIAtom**)&nsCSSPseudoClasses::name_ },
  55 #include "nsCSSPseudoClassList.h"
  56 #undef CSS_PSEUDO_CLASS
  57 };
  58
  59 void nsCSSPseudoClasses::AddRefAtoms()
  60 {
  61   NS_RegisterStaticAtoms(CSSPseudoClasses_info,
  62                          NS_ARRAY_LENGTH(CSSPseudoClasses_info));
  63 }
  64
  65 PRBool nsCSSPseudoClasses::IsPseudoClass(nsIAtom *aAtom)
  66 {
  67   return nsAtomListUtils::IsMember(aAtom,CSSPseudoClasses_info,
  68                                    NS_ARRAY_LENGTH(CSSPseudoClasses_info));
  69 }
  70
  71 PRBool
  72 nsCSSPseudoClasses::HasStringArg(nsIAtom* aAtom)
  73 {
  74   return aAtom == nsCSSPseudoClasses::lang ||
  75          aAtom == nsCSSPseudoClasses::mozEmptyExceptChildrenWithLocalname ||
  76          aAtom == nsCSSPseudoClasses::mozSystemMetric;
  77 }
  78
  79 PRBool
  80 nsCSSPseudoClasses::HasNthPairArg(nsIAtom* aAtom)
  81 {
  82   return aAtom == nsCSSPseudoClasses::nthChild ||
  83          aAtom == nsCSSPseudoClasses::nthLastChild ||
  84          aAtom == nsCSSPseudoClasses::nthOfType ||
  85          aAtom == nsCSSPseudoClasses::nthLastOfType;
  86 }