gecko-dev/layout/style/nsCSSFontFaceRule.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#ifndef nsCSSFontFaceRule_h
#define nsCSSFontFaceRule_h
#include "mozilla/css/Rule.h"
#include "nsCSSValue.h"
#include "nsICSSDeclaration.h"
#include "nsIDOMCSSFontFaceRule.h"
namespace mozilla {
struct CSSFontFaceDescriptors
{
#define CSS_FONT_DESC(name_, method_) nsCSSValue m##method_;
#include "nsCSSFontDescList.h"
#undef CSS_FONT_DESC
const nsCSSValue& Get(nsCSSFontDesc aFontDescID) const;
nsCSSValue& Get(nsCSSFontDesc aFontDescID);
private:
static nsCSSValue CSSFontFaceDescriptors::* const Fields[];
};
} // namespace mozilla
// A nsCSSFontFaceStyleDecl is always embedded in a nsCSSFontFaceRule.
class nsCSSFontFaceRule;
class nsCSSFontFaceStyleDecl final : public nsICSSDeclaration
{
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIDOMCSSSTYLEDECLARATION_HELPER
NS_DECL_NSICSSDECLARATION
virtual already_AddRefed<mozilla::dom::CSSValue>
GetPropertyCSSValue(const nsAString& aProp, mozilla::ErrorResult& aRv)
override;
using nsICSSDeclaration::GetPropertyCSSValue;
virtual nsINode *GetParentObject() override;
virtual void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aPropName) override;
nsresult GetPropertyValue(nsCSSFontDesc aFontDescID,
nsAString & aResult) const;
virtual JSObject* WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
protected:
~nsCSSFontFaceStyleDecl() {}
friend class nsCSSFontFaceRule;
inline nsCSSFontFaceRule* ContainingRule();
inline const nsCSSFontFaceRule* ContainingRule() const;
mozilla::CSSFontFaceDescriptors mDescriptors;
// The actual implementation of GetCssText, so we can make it const.
void GetCssTextImpl(nsAString& aCssText) const;
private:
// NOT TO BE IMPLEMENTED
// This object cannot be allocated on its own, only as part of
// nsCSSFontFaceRule.
void* operator new(size_t size) CPP_THROW_NEW;
};
class nsCSSFontFaceRule final : public mozilla::css::Rule,
public nsIDOMCSSFontFaceRule
{
public:
nsCSSFontFaceRule(uint32_t aLineNumber, uint32_t aColumnNumber)
: mozilla::css::Rule(aLineNumber, aColumnNumber)
{
}
nsCSSFontFaceRule(const nsCSSFontFaceRule& aCopy)
// copy everything except our reference count
: mozilla::css::Rule(aCopy), mDecl(aCopy.mDecl)
{
}
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(nsCSSFontFaceRule,
mozilla::css::Rule)
virtual bool IsCCLeaf() const override;
#ifdef DEBUG
virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override;
#endif
virtual int32_t GetType() const override;
using Rule::GetType;
virtual already_AddRefed<mozilla::css::Rule> Clone() const override;
// nsIDOMCSSFontFaceRule interface
NS_DECL_NSIDOMCSSFONTFACERULE
void SetDesc(nsCSSFontDesc aDescID, nsCSSValue const & aValue);
void GetDesc(nsCSSFontDesc aDescID, nsCSSValue & aValue);
// WebIDL interface
uint16_t Type() const override;
void GetCssTextImpl(nsAString& aCssText) const override;
nsICSSDeclaration* Style();
virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const override;
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
void GetDescriptors(mozilla::CSSFontFaceDescriptors& aDescriptors) const
{ aDescriptors = mDecl.mDescriptors; }
protected:
~nsCSSFontFaceRule() {}
friend class nsCSSFontFaceStyleDecl;
nsCSSFontFaceStyleDecl mDecl;
};
// nsFontFaceRuleContainer - used for associating sheet type with
// specific @font-face rules
struct nsFontFaceRuleContainer {
RefPtr<nsCSSFontFaceRule> mRule;
mozilla::SheetType mSheetType;
};
inline nsCSSFontFaceRule*
nsCSSFontFaceStyleDecl::ContainingRule()
{
return reinterpret_cast<nsCSSFontFaceRule*>
(reinterpret_cast<char*>(this) - offsetof(nsCSSFontFaceRule, mDecl));
}
inline const nsCSSFontFaceRule*
nsCSSFontFaceStyleDecl::ContainingRule() const
{
return reinterpret_cast<const nsCSSFontFaceRule*>
(reinterpret_cast<const char*>(this) - offsetof(nsCSSFontFaceRule, mDecl));
}
#endif // nsCSSFontFaceRule_h