chrome/nsChromeRegistryContent.h
author Jan de Mooij <jdemooij@mozilla.com>
Sat, 12 Jan 2019 10:50:04 +0000
changeset 453631 cfa1c48c717048f00eb4811b5719cd716eb1e5b3
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
child 471297 7a5177cca40350267da21fdd3dd0025a172db51f
permissions -rw-r--r--
Bug 1518753 part 5 - Stop using JSProtoKey for initial shapes. r=tcampbell I added this optimization in bug 1299107 to share more shapes across compartments. Unfortunately this doesn't play well with same-compartment realms (ICs can misbehave) because it relies on compartments being isolated from each other. I think we should remove this optimization: * Fixing the IC issue is impossible without deoptimizing everything. * I added it mainly for chrome globals. The shared-JSM-global work has eliminated the need for this there. * Same-compartment realms win memory back by eliminating CCWs etc. * It's quite a lot of complicated code. Differential Revision: https://phabricator.services.mozilla.com/D16170

/* -*- Mode: C++; tab-width: 8; 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/. */

#ifndef nsChromeRegistryContent_h
#define nsChromeRegistryContent_h

#include "nsChromeRegistry.h"
#include "nsClassHashtable.h"

struct ChromePackage;
struct SubstitutionMapping;
struct OverrideMapping;

class nsChromeRegistryContent : public nsChromeRegistry {
 public:
  nsChromeRegistryContent();

  void RegisterRemoteChrome(
      const InfallibleTArray<ChromePackage>& aPackages,
      const InfallibleTArray<SubstitutionMapping>& aResources,
      const InfallibleTArray<OverrideMapping>& aOverrides,
      const nsACString& aLocale, bool aReset);

  NS_IMETHOD GetLocalesForPackage(const nsACString& aPackage,
                                  nsIUTF8StringEnumerator** aResult) override;
  NS_IMETHOD CheckForNewChrome() override;
  NS_IMETHOD CheckForOSAccessibility() override;
  NS_IMETHOD Observe(nsISupports* aSubject, const char* aTopic,
                     const char16_t* aData) override;
  NS_IMETHOD IsLocaleRTL(const nsACString& package, bool* aResult) override;
  NS_IMETHOD GetSelectedLocale(const nsACString& aPackage, bool aAsBCP47,
                               nsACString& aLocale) override;

  void RegisterPackage(const ChromePackage& aPackage);
  void RegisterOverride(const OverrideMapping& aOverride);
  void RegisterSubstitution(const SubstitutionMapping& aResource);

 private:
  struct PackageEntry {
    PackageEntry() : flags(0) {}
    ~PackageEntry() {}

    nsCOMPtr<nsIURI> contentBaseURI;
    nsCOMPtr<nsIURI> localeBaseURI;
    nsCOMPtr<nsIURI> skinBaseURI;
    uint32_t flags;
  };

  nsIURI* GetBaseURIFromPackage(const nsCString& aPackage,
                                const nsCString& aProvider,
                                const nsCString& aPath) override;
  nsresult GetFlagsFromPackage(const nsCString& aPackage,
                               uint32_t* aFlags) override;

  nsClassHashtable<nsCStringHashKey, PackageEntry> mPackagesHash;
  nsCString mLocale;

  virtual void ManifestContent(ManifestProcessingContext& cx, int lineno,
                               char* const* argv, int flags) override;
  virtual void ManifestLocale(ManifestProcessingContext& cx, int lineno,
                              char* const* argv, int flags) override;
  virtual void ManifestSkin(ManifestProcessingContext& cx, int lineno,
                            char* const* argv, int flags) override;
  virtual void ManifestOverride(ManifestProcessingContext& cx, int lineno,
                                char* const* argv, int flags) override;
  virtual void ManifestResource(ManifestProcessingContext& cx, int lineno,
                                char* const* argv, int flags) override;
};

#endif  // nsChromeRegistryContent_h