tor-browser

The Tor Browser
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WebBrowserPersistResourcesChild.cpp (2659B)

      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
      2 *
      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 "WebBrowserPersistResourcesChild.h"
      8 
      9 #include "WebBrowserPersistDocumentChild.h"
     10 #include "mozilla/dom/PContentChild.h"
     11 
     12 namespace mozilla {
     13 
     14 NS_IMPL_ISUPPORTS(WebBrowserPersistResourcesChild,
     15                  nsIWebBrowserPersistResourceVisitor)
     16 
     17 WebBrowserPersistResourcesChild::WebBrowserPersistResourcesChild() = default;
     18 
     19 WebBrowserPersistResourcesChild::~WebBrowserPersistResourcesChild() = default;
     20 
     21 NS_IMETHODIMP
     22 WebBrowserPersistResourcesChild::VisitResource(
     23    nsIWebBrowserPersistDocument* aDocument, const nsACString& aURI,
     24    nsContentPolicyType aContentPolicyType) {
     25  nsCString copiedURI(aURI);  // Yay, XPIDL/IPDL mismatch.
     26  SendVisitResource(copiedURI, aContentPolicyType);
     27  return NS_OK;
     28 }
     29 
     30 NS_IMETHODIMP
     31 WebBrowserPersistResourcesChild::VisitDocument(
     32    nsIWebBrowserPersistDocument* aDocument,
     33    nsIWebBrowserPersistDocument* aSubDocument) {
     34  RefPtr<WebBrowserPersistDocumentChild> subActor =
     35      new WebBrowserPersistDocumentChild();
     36  // As a consequence of how PWebBrowserPersistDocumentConstructor
     37  // can be sent by both the parent and the child, we must pass the
     38  // aBrowser and outerWindowID arguments here, but the values are
     39  // ignored by the parent.  In particular, the BrowserChild in which
     40  // persistence started does not necessarily exist at this point;
     41  // see bug 1203602.
     42  if (!Manager()->Manager()->SendPWebBrowserPersistDocumentConstructor(
     43          subActor, nullptr, nullptr)) {
     44    return NS_ERROR_FAILURE;
     45  }
     46 
     47  // The order of these two messages will be preserved, because
     48  // they're the same toplevel protocol and priority.
     49  //
     50  // With this ordering, it's always the transition out of START
     51  // state that causes a document's parent actor to be exposed to
     52  // XPCOM (for both parent->child and child->parent construction),
     53  // which simplifies the lifetime management.
     54  SendVisitDocument(WrapNotNull(subActor));
     55  subActor->Start(aSubDocument);
     56  return NS_OK;
     57 }
     58 
     59 NS_IMETHODIMP
     60 WebBrowserPersistResourcesChild::VisitBrowsingContext(
     61    nsIWebBrowserPersistDocument* aDocument,
     62    dom::BrowsingContext* aBrowsingContext) {
     63  SendVisitBrowsingContext(aBrowsingContext);
     64  return NS_OK;
     65 }
     66 
     67 NS_IMETHODIMP
     68 WebBrowserPersistResourcesChild::EndVisit(
     69    nsIWebBrowserPersistDocument* aDocument, nsresult aStatus) {
     70  Send__delete__(this, aStatus);
     71  return NS_OK;
     72 }
     73 
     74 }  // namespace mozilla