xpcom/ds/nsIPersistentProperties2.idl
author Andreas Farre <farre@mozilla.com>
Sun, 05 May 2019 19:26:51 +0000
changeset 472634 f59b3336d254c80bf2b315a74fea0cb0fa8e0d47
parent 436902 930f94ff8388918d115d82fb022988a85e6deb41
permissions -rw-r--r--
Bug 1547911 - Don't assert that there are no children when restoring BC. r=nika This is essentially equal to restoring cached children and removing current children from a BrowsingContext, which is the correct behaviour. It would've been better if the current children were removed in a more transparent manner, but it is more important to remove an assert that too eagerly triggers. Differential Revision: https://phabricator.services.mozilla.com/D29945

/* -*- 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/. */

#include "nsIProperties.idl"

interface nsIInputStream;
interface nsIOutputStream;
interface nsISimpleEnumerator;

%{C++
#include "mozilla/MemoryReporting.h"
%}

[scriptable, uuid(283EE646-1AEF-11D4-98B3-00C04fA0CE9A)]
interface nsIPropertyElement : nsISupports {
  attribute AUTF8String key;
  attribute AString value;
};

[scriptable, uuid(706867af-0400-4faa-beb1-0dae87308784)]
interface nsIPersistentProperties : nsIProperties
{
  /**
   * load a set of name/value pairs from the input stream
   * names and values should be in UTF8
   */
  void load(in nsIInputStream input);

  /**
   * output the values to the stream - results will be in UTF8
   */
  void save(in nsIOutputStream output, in AUTF8String header);

  /**
   * get an enumeration of nsIPropertyElement objects,
   * which are read-only (i.e. setting properties on the element will
   * not make changes back into the source nsIPersistentProperties
   */
  nsISimpleEnumerator enumerate();

  /**
   * shortcut to nsIProperty's get() which retrieves a string value
   * directly (and thus faster)
   */
  AString getStringProperty(in AUTF8String key);

  /**
   * shortcut to nsIProperty's set() which sets a string value
   * directly (and thus faster). If the given property already exists,
   * then the old value will be returned
   */
  AString setStringProperty(in AUTF8String key, in AString value);

%{C++
  virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const = 0;
%}
};