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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* atom list for CSS pseudo-elements */
#ifndef nsCSSPseudoElements_h___
#define nsCSSPseudoElements_h___
#include "nsIAtom.h"
// Is this pseudo-element a CSS2 pseudo-element that can be specified
// with the single colon syntax (in addition to the double-colon syntax,
// which can be used for all pseudo-elements)?
#define CSS_PSEUDO_ELEMENT_IS_CSS2 (1<<0)
// Is this pseudo-element a pseudo-element that can contain other
// elements?
// (Currently pseudo-elements are either leaves of the tree (relative to
// real elements) or they contain other elements in a non-tree-like
// manner (i.e., like incorrectly-nested start and end tags). It's
// possible that in the future there might be container pseudo-elements
// that form a properly nested tree structure. If that happens, we
// should probably split this flag into two.)
#define CSS_PSEUDO_ELEMENT_CONTAINS_ELEMENTS (1<<1)
// Empty class derived from nsIAtom so that function signatures can
// require an atom from this atom list.
class nsICSSPseudoElement : public nsIAtom {};
class nsCSSPseudoElements {
public:
static void AddRefAtoms();
static bool IsPseudoElement(nsIAtom *aAtom);
static bool IsCSS2PseudoElement(nsIAtom *aAtom);
static bool PseudoElementContainsElements(nsIAtom *aAtom) {
return PseudoElementHasFlags(aAtom, CSS_PSEUDO_ELEMENT_CONTAINS_ELEMENTS);
}
#define CSS_PSEUDO_ELEMENT(_name, _value, _flags) \
static nsICSSPseudoElement* _name;
#include "nsCSSPseudoElementList.h"
#undef CSS_PSEUDO_ELEMENT
enum Type {
// If the actual pseudo-elements stop being first here, change
// GetPseudoType.
#define CSS_PSEUDO_ELEMENT(_name, _value_, _flags) \
ePseudo_##_name,
#include "nsCSSPseudoElementList.h"
#undef CSS_PSEUDO_ELEMENT
ePseudo_PseudoElementCount,
ePseudo_AnonBox = ePseudo_PseudoElementCount,
#ifdef MOZ_XUL
ePseudo_XULTree,
#endif
ePseudo_NotPseudoElement,
ePseudo_MAX
};
static Type GetPseudoType(nsIAtom* aAtom);
// Get the atom for a given Type. aType must be < ePseudo_PseudoElementCount
static nsIAtom* GetPseudoAtom(Type aType);
private:
static uint32_t FlagsForPseudoElement(nsIAtom *aAtom);
// Does the given pseudo-element have all of the flags given?
static bool PseudoElementHasFlags(nsIAtom *aAtom, uint32_t aFlags)
{
return (FlagsForPseudoElement(aAtom) & aFlags) == aFlags;
}
};
#endif /* nsCSSPseudoElements_h___ */
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