hal/WindowIdentifier.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set sw=2 ts=8 et ft=cpp : */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/ContentChild.h"
   8 #include "WindowIdentifier.h"
   9 #include "nsPIDOMWindow.h"
  10
  11 namespace mozilla {
  12 namespace hal {
  13
  14 WindowIdentifier::WindowIdentifier()
  15   : mWindow(nullptr)
  16   , mIsEmpty(true)
  17 {
  18 }
  19
  20 WindowIdentifier::WindowIdentifier(nsIDOMWindow *window)
  21   : mWindow(window)
  22   , mIsEmpty(false)
  23 {
  24   mID.AppendElement(GetWindowID());
  25 }
  26
  27 WindowIdentifier::WindowIdentifier(const InfallibleTArray<uint64_t> &id, nsIDOMWindow *window)
  28   : mID(id)
  29   , mWindow(window)
  30   , mIsEmpty(false)
  31 {
  32   mID.AppendElement(GetWindowID());
  33 }
  34
  35 WindowIdentifier::WindowIdentifier(const WindowIdentifier &other)
  36   : mID(other.mID)
  37   , mWindow(other.mWindow)
  38   , mIsEmpty(other.mIsEmpty)
  39 {
  40 }
  41
  42 const InfallibleTArray<uint64_t>&
  43 WindowIdentifier::AsArray() const
  44 {
  45   MOZ_ASSERT(!mIsEmpty);
  46   return mID;
  47 }
  48
  49 bool
  50 WindowIdentifier::HasTraveledThroughIPC() const
  51 {
  52   MOZ_ASSERT(!mIsEmpty);
  53   return mID.Length() >= 2;
  54 }
  55
  56 void
  57 WindowIdentifier::AppendProcessID()
  58 {
  59   MOZ_ASSERT(!mIsEmpty);
  60   mID.AppendElement(dom::ContentChild::GetSingleton()->GetID());
  61 }
  62
  63 uint64_t
  64 WindowIdentifier::GetWindowID() const
  65 {
  66   MOZ_ASSERT(!mIsEmpty);
  67   nsCOMPtr<nsPIDOMWindow> pidomWindow = do_QueryInterface(mWindow);
  68   if (!pidomWindow) {
  69     return UINT64_MAX;
  70   }
  71   return pidomWindow->WindowID();
  72 }
  73
  74 nsIDOMWindow*
  75 WindowIdentifier::GetWindow() const
  76 {
  77   MOZ_ASSERT(!mIsEmpty);
  78   return mWindow;
  79 }
  80
  81 } // namespace hal
  82 } // namespace mozilla