dom/webbrowserpersist/WebBrowserPersistResourcesParent.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 "WebBrowserPersistResourcesParent.h"
   8
   9 #include "nsThreadUtils.h"
  10
  11 #include "mozilla/dom/BrowserParent.h"
  12 #include "mozilla/dom/CanonicalBrowsingContext.h"
  13 #include "mozilla/dom/ContentParent.h"
  14 #include "mozilla/dom/WindowGlobalParent.h"
  15
  16 namespace mozilla {
  17
  18 NS_IMPL_ISUPPORTS(WebBrowserPersistResourcesParent,
  19                   nsIWebBrowserPersistDocumentReceiver)
  20
  21 WebBrowserPersistResourcesParent::WebBrowserPersistResourcesParent(
  22     nsIWebBrowserPersistDocument* aDocument,
  23     nsIWebBrowserPersistResourceVisitor* aVisitor)
  24     : mDocument(aDocument), mVisitor(aVisitor) {
  25   MOZ_ASSERT(aDocument);
  26   MOZ_ASSERT(aVisitor);
  27 }
  28
  29 WebBrowserPersistResourcesParent::~WebBrowserPersistResourcesParent() = default;
  30
  31 void WebBrowserPersistResourcesParent::ActorDestroy(ActorDestroyReason aWhy) {
  32   if (aWhy != Deletion && mVisitor) {
  33     // See comment in WebBrowserPersistDocumentParent::ActorDestroy
  34     // (or bug 1202887) for why this is deferred.
  35     nsCOMPtr<nsIRunnable> errorLater =
  36         NewRunnableMethod<nsCOMPtr<nsIWebBrowserPersistDocument>, nsresult>(
  37             "nsIWebBrowserPersistResourceVisitor::EndVisit", mVisitor,
  38             &nsIWebBrowserPersistResourceVisitor::EndVisit, mDocument,
  39             NS_ERROR_FAILURE);
  40     NS_DispatchToCurrentThread(errorLater);
  41   }
  42   mVisitor = nullptr;
  43 }
  44
  45 mozilla::ipc::IPCResult WebBrowserPersistResourcesParent::Recv__delete__(
  46     const nsresult& aStatus) {
  47   mVisitor->EndVisit(mDocument, aStatus);
  48   mVisitor = nullptr;
  49   return IPC_OK();
  50 }
  51
  52 mozilla::ipc::IPCResult WebBrowserPersistResourcesParent::RecvVisitResource(
  53     const nsCString& aURI, const nsContentPolicyType& aContentPolicyType) {
  54   mVisitor->VisitResource(mDocument, aURI, aContentPolicyType);
  55   return IPC_OK();
  56 }
  57
  58 mozilla::ipc::IPCResult WebBrowserPersistResourcesParent::RecvVisitDocument(
  59     PWebBrowserPersistDocumentParent* aSubDocument) {
  60   // Don't expose the subdocument to the visitor until it's ready
  61   // (until the actor isn't in START state).
  62   static_cast<WebBrowserPersistDocumentParent*>(aSubDocument)->SetOnReady(this);
  63   return IPC_OK();
  64 }
  65
  66 mozilla::ipc::IPCResult
  67 WebBrowserPersistResourcesParent::RecvVisitBrowsingContext(
  68     const dom::MaybeDiscarded<dom::BrowsingContext>& aContext) {
  69   if (aContext.IsNullOrDiscarded()) {
  70     // Nothing useful to do but ignore the discarded context.
  71     return IPC_OK();
  72   }
  73
  74   mVisitor->VisitBrowsingContext(mDocument, aContext.get());
  75   return IPC_OK();
  76 }
  77
  78 NS_IMETHODIMP
  79 WebBrowserPersistResourcesParent::OnDocumentReady(
  80     nsIWebBrowserPersistDocument* aSubDocument) {
  81   if (!mVisitor) {
  82     return NS_ERROR_FAILURE;
  83   }
  84   mVisitor->VisitDocument(mDocument, aSubDocument);
  85   return NS_OK;
  86 }
  87
  88 NS_IMETHODIMP
  89 WebBrowserPersistResourcesParent::OnError(nsresult aFailure) {
  90   // Nothing useful to do but ignore the failed document.
  91   return NS_OK;
  92 }
  93
  94 }  // namespace mozilla