chrome/nsChromeRegistry.h
author alwu <alwu@mozilla.com>
Mon, 07 Jan 2019 19:57:48 +0000
changeset 512757 0e229bbdaae5c8fa9f83796c628a4fdf88f057ba
parent 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1513039 - part5 : log warning when autoplay is blocked. r=cpearce,karlt Wrap 'nsContentUtils::ReportToConsole()' to reduce necessary input parameters and call it when we need to log error or warning message. Show the warning when autoplay is blocked. For web audio, this restores the console messages removed in part4 and also reports the same message when the AudioContext is blocked in the constructor. Differential Revision: https://phabricator.services.mozilla.com/D14330

/* -*- 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/. */

#ifndef nsChromeRegistry_h
#define nsChromeRegistry_h

#include "nsIToolkitChromeRegistry.h"
#include "nsIObserver.h"
#include "nsWeakReference.h"

#include "nsString.h"
#include "nsURIHashKey.h"
#include "nsInterfaceHashtable.h"
#include "nsXULAppAPI.h"

#include "mozilla/FileLocation.h"

class nsPIDOMWindowOuter;
class nsIPrefBranch;
class nsIURL;

// The chrome registry is actually split between nsChromeRegistryChrome and
// nsChromeRegistryContent. The work/data that is common to both resides in
// the shared nsChromeRegistry implementation, with operations that only make
// sense for one side erroring out in the other.

// for component registration
// {47049e42-1d87-482a-984d-56ae185e367a}
#define NS_CHROMEREGISTRY_CID                        \
  {                                                  \
    0x47049e42, 0x1d87, 0x482a, {                    \
      0x98, 0x4d, 0x56, 0xae, 0x18, 0x5e, 0x36, 0x7a \
    }                                                \
  }

class nsChromeRegistry : public nsIToolkitChromeRegistry,
                         public nsIObserver,
                         public nsSupportsWeakReference {
 public:
  NS_DECL_ISUPPORTS

  // nsIXULChromeRegistry methods:
  NS_IMETHOD RefreshSkins() override;
  NS_IMETHOD AllowScriptsForPackage(nsIURI* url, bool* _retval) override;
  NS_IMETHOD AllowContentToAccess(nsIURI* url, bool* _retval) override;
  NS_IMETHOD CanLoadURLRemotely(nsIURI* url, bool* _retval) override;
  NS_IMETHOD MustLoadURLRemotely(nsIURI* url, bool* _retval) override;

  NS_IMETHOD ConvertChromeURL(nsIURI* aChromeURI, nsIURI** aResult) override;

  // nsChromeRegistry methods:
  nsChromeRegistry() : mInitialized(false) {}

  virtual nsresult Init();

  static already_AddRefed<nsIChromeRegistry> GetService();

  static nsChromeRegistry* gChromeRegistry;

  // This method can change its parameter, so due to thread safety issues
  // it should only be called for nsCOMPtr<nsIURI> that is on the stack,
  // unless you know what you are doing.
  static nsresult Canonify(nsCOMPtr<nsIURI>& aChromeURL);

 protected:
  virtual ~nsChromeRegistry();

  void FlushSkinCaches();
  void FlushAllCaches();

  static void LogMessage(const char* aMsg, ...) MOZ_FORMAT_PRINTF(1, 2);
  static void LogMessageWithContext(nsIURI* aURL, uint32_t aLineNumber,
                                    uint32_t flags, const char* aMsg, ...)
      MOZ_FORMAT_PRINTF(4, 5);

  virtual nsIURI* GetBaseURIFromPackage(const nsCString& aPackage,
                                        const nsCString& aProvider,
                                        const nsCString& aPath) = 0;
  virtual nsresult GetFlagsFromPackage(const nsCString& aPackage,
                                       uint32_t* aFlags) = 0;

  static nsresult RefreshWindow(nsPIDOMWindowOuter* aWindow);
  static nsresult GetProviderAndPath(nsIURI* aChromeURL, nsACString& aProvider,
                                     nsACString& aPath);

  bool GetDirectionForLocale(const nsACString& aLocale);

  void SanitizeForBCP47(nsACString& aLocale);

 public:
  static already_AddRefed<nsChromeRegistry> GetSingleton();

  struct ManifestProcessingContext {
    ManifestProcessingContext(NSLocationType aType,
                              mozilla::FileLocation& aFile)
        : mType(aType), mFile(aFile) {}

    ~ManifestProcessingContext() {}

    nsIURI* GetManifestURI();
    already_AddRefed<nsIURI> ResolveURI(const char* uri);

    NSLocationType mType;
    mozilla::FileLocation mFile;
    nsCOMPtr<nsIURI> mManifestURI;
  };

  virtual void ManifestContent(ManifestProcessingContext& cx, int lineno,
                               char* const* argv, int flags) = 0;
  virtual void ManifestLocale(ManifestProcessingContext& cx, int lineno,
                              char* const* argv, int flags) = 0;
  virtual void ManifestSkin(ManifestProcessingContext& cx, int lineno,
                            char* const* argv, int flags) = 0;
  virtual void ManifestOverride(ManifestProcessingContext& cx, int lineno,
                                char* const* argv, int flags) = 0;
  virtual void ManifestResource(ManifestProcessingContext& cx, int lineno,
                                char* const* argv, int flags) = 0;

  // Available flags
  enum {
    // This package should use the new XPCNativeWrappers to separate
    // content from chrome. This flag is currently unused (because we call
    // into xpconnect at registration time).
    XPCNATIVEWRAPPERS = 1 << 1,

    // Content script may access files in this package
    CONTENT_ACCESSIBLE = 1 << 2,

    // Package may be loaded remotely
    REMOTE_ALLOWED = 1 << 3,

    // Package must be loaded remotely
    REMOTE_REQUIRED = 1 << 4,
  };

  bool mInitialized;

  // "Override" table (chrome URI string -> real URI)
  nsInterfaceHashtable<nsURIHashKey, nsIURI> mOverrideTable;
};

#endif  // nsChromeRegistry_h