extensions/renderer/guest_view/guest_view_container.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "extensions/renderer/guest_view/guest_view_container.h"
   6
   7 #include "content/public/renderer/render_frame.h"
   8 #include "content/public/renderer/render_frame_observer.h"
   9 #include "content/public/renderer/render_view.h"
  10 #include "extensions/common/guest_view/extensions_guest_view_messages.h"
  11 #include "extensions/common/guest_view/guest_view_constants.h"
  12 #include "extensions/common/guest_view/guest_view_messages.h"
  13
  14 namespace extensions {
  15
  16 class GuestViewContainer::RenderFrameLifetimeObserver
  17     : public content::RenderFrameObserver {
  18  public:
  19   RenderFrameLifetimeObserver(GuestViewContainer* container,
  20                               content::RenderFrame* render_frame);
  21
  22   // content::RenderFrameObserver overrides.
  23   void OnDestruct() override;
  24
  25  private:
  26   GuestViewContainer* container_;
  27
  28   DISALLOW_COPY_AND_ASSIGN(RenderFrameLifetimeObserver);
  29 };
  30
  31 GuestViewContainer::RenderFrameLifetimeObserver::RenderFrameLifetimeObserver(
  32     GuestViewContainer* container,
  33     content::RenderFrame* render_frame)
  34     : content::RenderFrameObserver(render_frame),
  35       container_(container) {}
  36
  37 void GuestViewContainer::RenderFrameLifetimeObserver::OnDestruct() {
  38   container_->RenderFrameDestroyed();
  39 }
  40
  41 GuestViewContainer::GuestViewContainer(content::RenderFrame* render_frame)
  42     : element_instance_id_(guestview::kInstanceIDNone),
  43       render_frame_(render_frame) {
  44   render_frame_lifetime_observer_.reset(
  45       new RenderFrameLifetimeObserver(this, render_frame_));
  46 }
  47
  48 GuestViewContainer::~GuestViewContainer() {}
  49
  50 // static.
  51 bool GuestViewContainer::HandlesMessage(const IPC::Message& msg) {
  52   switch (msg.type()) {
  53     case ExtensionsGuestViewMsg_CreateMimeHandlerViewGuestACK::ID:
  54     case ExtensionsGuestViewMsg_MimeHandlerViewGuestOnLoadCompleted::ID:
  55     case GuestViewMsg_GuestAttached::ID:
  56     case GuestViewMsg_GuestDetached::ID:
  57       return true;
  58     default:
  59       return false;
  60   }
  61 }
  62
  63 void GuestViewContainer::RenderFrameDestroyed() {
  64   OnRenderFrameDestroyed();
  65   render_frame_ = nullptr;
  66 }
  67
  68 void GuestViewContainer::SetElementInstanceID(int element_instance_id) {
  69   DCHECK_EQ(element_instance_id_, guestview::kInstanceIDNone);
  70   element_instance_id_ = element_instance_id;
  71 }
  72
  73 }  // namespace extensions