dom/webbrowserpersist/WebBrowserPersistResourcesChild.cpp

   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