gecko-dev/layout/style/StyleSheet.h

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2.6 KiB
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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 mozilla_StyleSheet_h
#define mozilla_StyleSheet_h
#include "mozilla/css/SheetParsingMode.h"
#include "mozilla/dom/CSSStyleSheetBinding.h"
#include "mozilla/StyleBackendType.h"
#include "mozilla/StyleSheetHandle.h"
#include "mozilla/StyleSheetInfo.h"
class nsIDocument;
class nsINode;
namespace mozilla {
class CSSStyleSheet;
class ServoStyleSheet;
/**
* Superclass for data common to CSSStyleSheet and ServoStyleSheet.
*/
class StyleSheet
{
protected:
StyleSheet(StyleBackendType aType, css::SheetParsingMode aParsingMode);
StyleSheet(const StyleSheet& aCopy,
nsIDocument* aDocumentToUse,
nsINode* aOwningNodeToUse);
public:
void SetOwningNode(nsINode* aOwningNode)
{
mOwningNode = aOwningNode;
}
css::SheetParsingMode ParsingMode() { return mParsingMode; }
mozilla::dom::CSSStyleSheetParsingMode ParsingModeDOM();
nsINode* GetOwnerNode() const { return mOwningNode; }
// The document this style sheet is associated with. May be null
nsIDocument* GetDocument() const { return mDocument; }
/**
* Whether the sheet is complete.
*/
bool IsComplete() const;
void SetComplete();
// Get a handle to the various stylesheet bits which live on the 'inner' for
// gecko stylesheets and live on the StyleSheet for Servo stylesheets.
StyleSheetInfo& SheetInfo();
const StyleSheetInfo& SheetInfo() const { return const_cast<StyleSheet*>(this)->SheetInfo(); };
bool IsGecko() const { return !IsServo(); }
bool IsServo() const
{
#ifdef MOZ_STYLO
return mType == StyleBackendType::Servo;
#else
return false;
#endif
}
// Only safe to call if the caller has verified that that |this| is of the
// correct type.
inline CSSStyleSheet& AsGecko();
inline ServoStyleSheet& AsServo();
inline StyleSheetHandle AsHandle();
protected:
nsIDocument* mDocument; // weak ref; parents maintain this for their children
nsINode* mOwningNode; // weak ref
// mParsingMode controls access to nonstandard style constructs that
// are not safe for use on the public Web but necessary in UA sheets
// and/or useful in user sheets.
css::SheetParsingMode mParsingMode;
StyleBackendType mType;
bool mDisabled;
};
} // namespace mozilla
#endif // mozilla_StyleSheet_h