зеркало из https://github.com/mozilla/gecko-dev.git
114 строки
4.2 KiB
C++
114 строки
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is atom lists for CSS pseudos.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* L. David Baron <dbaron@dbaron.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* atom list for CSS pseudo-elements */
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#ifndef nsCSSPseudoElements_h___
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#define nsCSSPseudoElements_h___
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#include "nsIAtom.h"
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// Is this pseudo-element a CSS2 pseudo-element that can be specified
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// with the single colon syntax (in addition to the double-colon syntax,
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// which can be used for all pseudo-elements)?
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#define CSS_PSEUDO_ELEMENT_IS_CSS2 (1<<0)
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// Is this pseudo-element a pseudo-element that can contain other
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// elements?
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// (Currently pseudo-elements are either leaves of the tree (relative to
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// real elements) or they contain other elements in a non-tree-like
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// manner (i.e., like incorrectly-nested start and end tags). It's
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// possible that in the future there might be container pseudo-elements
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// that form a properly nested tree structure. If that happens, we
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// should probably split this flag into two.)
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#define CSS_PSEUDO_ELEMENT_CONTAINS_ELEMENTS (1<<1)
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// Empty class derived from nsIAtom so that function signatures can
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// require an atom from this atom list.
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class nsICSSPseudoElement : public nsIAtom {};
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class nsCSSPseudoElements {
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public:
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static void AddRefAtoms();
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static bool IsPseudoElement(nsIAtom *aAtom);
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static bool IsCSS2PseudoElement(nsIAtom *aAtom);
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static bool PseudoElementContainsElements(nsIAtom *aAtom) {
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return PseudoElementHasFlags(aAtom, CSS_PSEUDO_ELEMENT_CONTAINS_ELEMENTS);
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}
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#define CSS_PSEUDO_ELEMENT(_name, _value, _flags) \
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static nsICSSPseudoElement* _name;
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#include "nsCSSPseudoElementList.h"
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#undef CSS_PSEUDO_ELEMENT
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enum Type {
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// If the actual pseudo-elements stop being first here, change
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// GetPseudoType.
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#define CSS_PSEUDO_ELEMENT(_name, _value_, _flags) \
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ePseudo_##_name,
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#include "nsCSSPseudoElementList.h"
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#undef CSS_PSEUDO_ELEMENT
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ePseudo_PseudoElementCount,
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ePseudo_AnonBox = ePseudo_PseudoElementCount,
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#ifdef MOZ_XUL
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ePseudo_XULTree,
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#endif
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ePseudo_NotPseudoElement,
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ePseudo_MAX
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};
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static Type GetPseudoType(nsIAtom* aAtom);
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// Get the atom for a given Type. aType must be < ePseudo_PseudoElementCount
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static nsIAtom* GetPseudoAtom(Type aType);
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private:
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static PRUint32 FlagsForPseudoElement(nsIAtom *aAtom);
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// Does the given pseudo-element have all of the flags given?
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static bool PseudoElementHasFlags(nsIAtom *aAtom, PRUint32 aFlags)
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{
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return (FlagsForPseudoElement(aAtom) & aFlags) == aFlags;
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}
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};
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#endif /* nsCSSPseudoElements_h___ */
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