dom/base/BindContext.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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/BindContext.h"
   8 #include "mozilla/dom/BrowsingContext.h"
   9
  10 #include "mozilla/dom/Document.h"
  11 #include "mozilla/StaticPrefs_browser.h"
  12 #include "nsContentUtils.h"
  13 #include "nsError.h"
  14 #include "nsPIDOMWindow.h"
  15
  16 namespace mozilla::dom {
  17
  18 bool BindContext::AllowsAutoFocus() const {
  19   if (!StaticPrefs::browser_autofocus()) {
  20     return false;
  21   }
  22   if (!InUncomposedDoc()) {
  23     return false;
  24   }
  25   if (mDoc.IsBeingUsedAsImage()) {
  26     return false;
  27   }
  28   return IsSameOriginAsTop();
  29 }
  30
  31 bool BindContext::IsSameOriginAsTop() const {
  32   BrowsingContext* browsingContext = mDoc.GetBrowsingContext();
  33   if (!browsingContext) {
  34     return false;
  35   }
  36
  37   nsPIDOMWindowOuter* topWindow = browsingContext->Top()->GetDOMWindow();
  38   if (!topWindow) {
  39     // If we don't have a DOMWindow, We are not in same origin.
  40     return false;
  41   }
  42
  43   Document* topLevelDocument = topWindow->GetExtantDoc();
  44   if (!topLevelDocument) {
  45     return false;
  46   }
  47
  48   return NS_SUCCEEDED(nsContentUtils::CheckSameOrigin(topLevelDocument, &mDoc));
  49 }
  50
  51 }  // namespace mozilla::dom