mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
134 lines
3.9 KiB
C++
134 lines
3.9 KiB
C++
/* -*- 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/. */
|
|
|
|
/* base class for all rule types in a CSS style sheet */
|
|
|
|
#ifndef mozilla_css_Rule_h___
|
|
#define mozilla_css_Rule_h___
|
|
|
|
#include "mozilla/MemoryReporting.h"
|
|
#include "nsIStyleRule.h"
|
|
#include "nsIDOMCSSRule.h"
|
|
#include "nsCSSStyleSheet.h"
|
|
|
|
class nsIStyleSheet;
|
|
class nsIDocument;
|
|
struct nsRuleData;
|
|
template<class T> struct already_AddRefed;
|
|
class nsHTMLCSSStyleSheet;
|
|
|
|
namespace mozilla {
|
|
namespace css {
|
|
class GroupRule;
|
|
|
|
#define DECL_STYLE_RULE_INHERIT_NO_DOMRULE \
|
|
virtual void MapRuleInfoInto(nsRuleData* aRuleData);
|
|
|
|
#define DECL_STYLE_RULE_INHERIT \
|
|
DECL_STYLE_RULE_INHERIT_NO_DOMRULE \
|
|
virtual nsIDOMCSSRule* GetDOMRule(); \
|
|
virtual nsIDOMCSSRule* GetExistingDOMRule();
|
|
|
|
class Rule : public nsIStyleRule {
|
|
protected:
|
|
Rule()
|
|
: mSheet(0),
|
|
mParentRule(nullptr)
|
|
{
|
|
}
|
|
|
|
Rule(const Rule& aCopy)
|
|
: mSheet(aCopy.mSheet),
|
|
mParentRule(aCopy.mParentRule)
|
|
{
|
|
}
|
|
|
|
virtual ~Rule() {}
|
|
|
|
public:
|
|
|
|
// The constants in this list must maintain the following invariants:
|
|
// If a rule of type N must appear before a rule of type M in stylesheets
|
|
// then N < M
|
|
// Note that nsCSSStyleSheet::RebuildChildList assumes that no other kinds of
|
|
// rules can come between two rules of type IMPORT_RULE.
|
|
enum {
|
|
UNKNOWN_RULE = 0,
|
|
CHARSET_RULE,
|
|
IMPORT_RULE,
|
|
NAMESPACE_RULE,
|
|
STYLE_RULE,
|
|
MEDIA_RULE,
|
|
FONT_FACE_RULE,
|
|
PAGE_RULE,
|
|
KEYFRAME_RULE,
|
|
KEYFRAMES_RULE,
|
|
DOCUMENT_RULE,
|
|
SUPPORTS_RULE,
|
|
FONT_FEATURE_VALUES_RULE
|
|
};
|
|
|
|
virtual int32_t GetType() const = 0;
|
|
|
|
nsCSSStyleSheet* GetStyleSheet() const;
|
|
nsHTMLCSSStyleSheet* GetHTMLCSSStyleSheet() const;
|
|
|
|
// Return the document the rule lives in, if any
|
|
nsIDocument* GetDocument() const
|
|
{
|
|
nsCSSStyleSheet* sheet = GetStyleSheet();
|
|
return sheet ? sheet->GetDocument() : nullptr;
|
|
}
|
|
|
|
virtual void SetStyleSheet(nsCSSStyleSheet* aSheet);
|
|
// This does not need to be virtual, because GroupRule and MediaRule are not
|
|
// used for inline style.
|
|
void SetHTMLCSSStyleSheet(nsHTMLCSSStyleSheet* aSheet);
|
|
|
|
void SetParentRule(GroupRule* aRule) {
|
|
// We don't reference count this up reference. The group rule
|
|
// will tell us when it's going away or when we're detached from
|
|
// it.
|
|
mParentRule = aRule;
|
|
}
|
|
|
|
/**
|
|
* Clones |this|. Never returns nullptr.
|
|
*/
|
|
virtual already_AddRefed<Rule> Clone() const = 0;
|
|
|
|
// Note that this returns null for inline style rules since they aren't
|
|
// supposed to have a DOM rule representation (and our code wouldn't work).
|
|
virtual nsIDOMCSSRule* GetDOMRule() = 0;
|
|
|
|
// Like GetDOMRule(), but won't create one if we don't have one yet
|
|
virtual nsIDOMCSSRule* GetExistingDOMRule() = 0;
|
|
|
|
// to implement methods on nsIDOMCSSRule
|
|
nsresult GetParentRule(nsIDOMCSSRule** aParentRule);
|
|
nsresult GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet);
|
|
|
|
// This is pure virtual because all of Rule's data members are non-owning and
|
|
// thus measured elsewhere.
|
|
virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)
|
|
const MOZ_MUST_OVERRIDE = 0;
|
|
|
|
// This is used to measure nsCOMArray<Rule>s.
|
|
static size_t SizeOfCOMArrayElementIncludingThis(css::Rule* aElement,
|
|
mozilla::MallocSizeOf aMallocSizeOf,
|
|
void* aData);
|
|
|
|
protected:
|
|
// This is either an nsCSSStyleSheet* or a nsHTMLStyleSheet*. The former
|
|
// if the low bit is 0, the latter if the low bit is 1.
|
|
uintptr_t mSheet;
|
|
GroupRule* mParentRule;
|
|
};
|
|
|
|
} // namespace css
|
|
} // namespace mozilla
|
|
|
|
#endif /* mozilla_css_Rule_h___ */
|