layout/style/nsHTMLStyleSheet.h
author Nika Layzell <nika@thelayzells.com>
Tue, 25 Sep 2018 17:34:53 +0200
changeset 507828 5e6dae0c1e5a4939ccd406f14607f7fafffd45a7
parent 477372 d6e582ce9bab5ca688a024fb20eeba097ad45dfe
child 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1448426 - Wrap windows.h to avoid problematic define statements, r=froydnj,glandium By default, windows.h exposes a large number of problematic define statements which are UpperCamelCase, such as a define from `CreateWindow` to `CreateWindow{A,W}`. As many of these names are generic (e.g. CreateFile, CreateWindow), they can mess up Gecko code that may legitimately have its own methods with the same names. The header also defines some traditional SCREAMING_SNAKE_CASE defines which can mess up our code by conflicting with local values. This patch adds a simple code generator which generates wrappers for these defines, and uses them to wrap the windows.h wrapper using the `stl_wrappers` mechanism, allowing us to use windows.h in more places. Differential Revision: https://phabricator.services.mozilla.com/D10932

/* -*- 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/. */

/*
 * style sheet and style rule processor representing data from presentational
 * HTML attributes
 */

#ifndef nsHTMLStyleSheet_h_
#define nsHTMLStyleSheet_h_

#include "nsColor.h"
#include "nsCOMPtr.h"
#include "nsAtom.h"
#include "PLDHashTable.h"
#include "mozilla/Attributes.h"
#include "mozilla/MemoryReporting.h"
#include "nsString.h"

class nsIDocument;
class nsMappedAttributes;
struct RawServoDeclarationBlock;

class nsHTMLStyleSheet final
{
public:
  explicit nsHTMLStyleSheet(nsIDocument* aDocument);

  void SetOwningDocument(nsIDocument* aDocument);

  NS_INLINE_DECL_REFCOUNTING(nsHTMLStyleSheet)

  size_t DOMSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;

  void Reset();
  nsresult SetLinkColor(nscolor aColor);
  nsresult SetActiveLinkColor(nscolor aColor);
  nsresult SetVisitedLinkColor(nscolor aColor);

  const RefPtr<RawServoDeclarationBlock>& GetServoUnvisitedLinkDecl() const {
    return mServoUnvisitedLinkDecl;
  }
  const RefPtr<RawServoDeclarationBlock>& GetServoVisitedLinkDecl() const {
    return mServoVisitedLinkDecl;
  }
  const RefPtr<RawServoDeclarationBlock>& GetServoActiveLinkDecl() const {
    return mServoActiveLinkDecl;
  }

  // Mapped Attribute management methods
  already_AddRefed<nsMappedAttributes>
    UniqueMappedAttributes(nsMappedAttributes* aMapped);
  void DropMappedAttributes(nsMappedAttributes* aMapped);
  // For each mapped presentation attribute in the cache, resolve
  // the attached DeclarationBlock by running the mapping
  // and converting the ruledata to Servo specified values.
  void CalculateMappedServoDeclarations();

private:
  nsHTMLStyleSheet(const nsHTMLStyleSheet& aCopy) = delete;
  nsHTMLStyleSheet& operator=(const nsHTMLStyleSheet& aCopy) = delete;

  ~nsHTMLStyleSheet() {}


  // Implementation of SetLink/VisitedLink/ActiveLinkColor
  nsresult ImplLinkColorSetter(
      RefPtr<RawServoDeclarationBlock>& aDecl,
      nscolor aColor);

public: // for mLangRuleTable structures only


private:
  nsIDocument*            mDocument;
  RefPtr<RawServoDeclarationBlock> mServoUnvisitedLinkDecl;
  RefPtr<RawServoDeclarationBlock> mServoVisitedLinkDecl;
  RefPtr<RawServoDeclarationBlock> mServoActiveLinkDecl;

  PLDHashTable            mMappedAttrTable;
  // Whether or not the mapped attributes table
  // has been changed since the last call to
  // CalculateMappedServoDeclarations()
  bool                    mMappedAttrsDirty;
};

#endif /* !defined(nsHTMLStyleSheet_h_) */