gecko-dev/docshell/base/nsILoadContext.idl

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: ft=cpp tw=78 sw=2 et ts=2 sts=2 cin
 * 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/. */

#include "nsISupports.idl"

interface mozIDOMWindowProxy;

webidl Element;

[ref] native OriginAttributes(mozilla::OriginAttributes);

%{C++
#ifdef MOZILLA_INTERNAL_API
#include "mozilla/BasePrincipal.h" // for OriginAttributes
#endif
%}

/**
 * An nsILoadContext represents the context of a load.  This interface
 * can be queried for various information about where the load is
 * happening.
 */
[builtinclass, scriptable, uuid(2813a7a3-d084-4d00-acd0-f76620315c02)]
interface nsILoadContext : nsISupports
{
  /**
   * associatedWindow is the window with which the load is associated, if any.
   * Note that the load may be triggered by a document which is different from
   * the document in associatedWindow, and in fact the source of the load need
   * not be same-origin with the document in associatedWindow.  This attribute
   * may be null if there is no associated window.
   */
  readonly attribute mozIDOMWindowProxy associatedWindow;

  /**
   * topWindow is the top window which is of same type as associatedWindow.
   * This is equivalent to associatedWindow.top, but is provided here as a
   * convenience.  All the same caveats as associatedWindow of apply, of
   * course.  This attribute may be null if there is no associated window.
   */
  readonly attribute mozIDOMWindowProxy topWindow;

  /**
   * topFrameElement is the <iframe>, <frame>, or <browser> element which
   * contains the topWindow with which the load is associated.
   *
   * Note that we may have a topFrameElement even when we don't have an
   * associatedWindow, if the topFrameElement's content lives out of process.
   * topFrameElement is available in single-process and multiprocess contexts.
   * Note that topFrameElement may be in chrome even when the nsILoadContext is
   * associated with content.
   */
  readonly attribute Element topFrameElement;

  /**
   * If this LoadContext corresponds to a nested remote iframe, we don't have
   * access to the topFrameElement.  Instead, we must use this id to send
   * messages. A return value of 0 signifies that this load context is not for
   * a nested frame.
   */
  readonly attribute unsigned long long nestedFrameId;

  /**
   * True if the load context is content (as opposed to chrome).  This is
   * determined based on the type of window the load is performed in, NOT based
   * on any URIs that might be around.
   */
  readonly attribute boolean isContent;

  /*
   * Attribute that determines if private browsing should be used. May not be
   * changed after a document has been loaded in this context.
   */
  attribute boolean usePrivateBrowsing;

  /**
   * Attribute that determines if remote (out-of-process) tabs should be used.
   */
  readonly attribute boolean useRemoteTabs;

  /**
   * Determines if out-of-process iframes should be used.
   */
  readonly attribute boolean useRemoteSubframes;

  /*
   * Attribute that determines if tracking protection should be used. May not be
   * changed after a document has been loaded in this context.
   */
  attribute boolean useTrackingProtection;

%{C++
  /**
   * De-XPCOMed getter to make call-sites cleaner.
   */
  bool UsePrivateBrowsing()
  {
    bool usingPB = false;
    GetUsePrivateBrowsing(&usingPB);
    return usingPB;
  }

  bool UseRemoteTabs()
  {
    bool usingRT = false;
    GetUseRemoteTabs(&usingRT);
    return usingRT;
  }

  bool UseRemoteSubframes()
  {
    bool usingRSF = false;
    GetUseRemoteSubframes(&usingRSF);
    return usingRSF;
  }

  bool UseTrackingProtection()
  {
    bool usingTP = false;
    GetUseTrackingProtection(&usingTP);
    return usingTP;
  }
%}

  /**
   * Set the private browsing state of the load context, meant to be used internally.
   */
  [noscript] void SetPrivateBrowsing(in boolean aInPrivateBrowsing);

  /**
   * Set the remote tabs state of the load context, meant to be used internally.
   */
  [noscript] void SetRemoteTabs(in boolean aUseRemoteTabs);

  /**
   * Set the remote subframes bit of this load context. Exclusively meant to be used internally.
   */
  [noscript] void SetRemoteSubframes(in boolean aUseRemoteSubframes);

  /**
   * Returns true iff the load is occurring inside an isolated mozbrowser
   * element. <xul:browser> is not considered to be a mozbrowser element.
   * <iframe mozbrowser noisolation> does not count as isolated since
   * isolation is disabled.  Isolation can only be disabled if the
   * containing document is chrome.
   */
  readonly attribute boolean isInIsolatedMozBrowserElement;

  /**
   * A dictionary of the non-default origin attributes associated with this
   * nsILoadContext.
   */
  [binaryname(ScriptableOriginAttributes), implicit_jscontext]
  readonly attribute jsval originAttributes;

  /**
   * The C++ getter for origin attributes.
   */
  [noscript, notxpcom] void GetOriginAttributes(out OriginAttributes aAttrs);
};