chrome/browser/media/router/media_router_dialog_controller.cc

   1 // Copyright 2015 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 "chrome/browser/media/router/media_router_dialog_controller.h"
   6
   7 #include "content/public/browser/browser_thread.h"
   8 #include "content/public/browser/web_contents.h"
   9 #include "content/public/browser/web_contents_delegate.h"
  10
  11 #if defined(OS_ANDROID)
  12 #include "chrome/browser/media/android/router/media_router_dialog_controller_android.h"
  13 #else
  14 #include "chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.h"
  15 #endif
  16
  17 namespace media_router {
  18
  19 // static
  20 MediaRouterDialogController*
  21 MediaRouterDialogController::GetOrCreateForWebContents(
  22     content::WebContents* contents) {
  23 #if defined(OS_ANDROID)
  24   return MediaRouterDialogControllerAndroid::GetOrCreateForWebContents(
  25       contents);
  26 #else
  27   return MediaRouterDialogControllerImpl::GetOrCreateForWebContents(contents);
  28 #endif
  29 }
  30
  31 class MediaRouterDialogController::InitiatorWebContentsObserver
  32     : public content::WebContentsObserver {
  33  public:
  34   InitiatorWebContentsObserver(
  35       content::WebContents* web_contents,
  36       MediaRouterDialogController* dialog_controller)
  37       : content::WebContentsObserver(web_contents),
  38         dialog_controller_(dialog_controller) {
  39     DCHECK(dialog_controller_);
  40   }
  41
  42  private:
  43   void WebContentsDestroyed() override {
  44     // NOTE: |this| is deleted after CloseMediaRouterDialog() returns.
  45     dialog_controller_->CloseMediaRouterDialog();
  46   }
  47
  48   void NavigationEntryCommitted(
  49       const content::LoadCommittedDetails& load_details) override {
  50     // NOTE: |this| is deleted after CloseMediaRouterDialog() returns.
  51     dialog_controller_->CloseMediaRouterDialog();
  52   }
  53
  54   void RenderProcessGone(base::TerminationStatus status) override {
  55     // NOTE: |this| is deleted after CloseMediaRouterDialog() returns.
  56     dialog_controller_->CloseMediaRouterDialog();
  57   }
  58
  59   MediaRouterDialogController* const dialog_controller_;
  60 };
  61
  62 MediaRouterDialogController::MediaRouterDialogController(
  63     content::WebContents* initiator)
  64     : initiator_(initiator) {
  65   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  66   DCHECK(initiator_);
  67   initiator_observer_.reset(new InitiatorWebContentsObserver(initiator_, this));
  68 }
  69
  70 MediaRouterDialogController::~MediaRouterDialogController() {
  71   DCHECK(thread_checker_.CalledOnValidThread());
  72 }
  73
  74 bool MediaRouterDialogController::ShowMediaRouterDialogForPresentation(
  75     scoped_ptr<CreatePresentationSessionRequest> request) {
  76   DCHECK(thread_checker_.CalledOnValidThread());
  77
  78   // Check if the media router dialog exists for |initiator| and return if so.
  79   if (IsShowingMediaRouterDialog())
  80     return false;
  81
  82   presentation_request_ = request.Pass();
  83   CreateMediaRouterDialog();
  84
  85   // Show the initiator holding the existing media router dialog.
  86   ActivateInitiatorWebContents();
  87
  88   return true;
  89 }
  90
  91 bool MediaRouterDialogController::ShowMediaRouterDialog() {
  92   DCHECK(thread_checker_.CalledOnValidThread());
  93
  94   // Don't create dialog if it already exists.
  95   bool dialog_needs_creation = !IsShowingMediaRouterDialog();
  96   if (dialog_needs_creation)
  97     CreateMediaRouterDialog();
  98
  99   ActivateInitiatorWebContents();
 100   return dialog_needs_creation;
 101 }
 102
 103 void MediaRouterDialogController::HideMediaRouterDialog() {
 104   DCHECK(thread_checker_.CalledOnValidThread());
 105   CloseMediaRouterDialog();
 106   Reset();
 107 }
 108
 109 void MediaRouterDialogController::ActivateInitiatorWebContents() {
 110   initiator_->GetDelegate()->ActivateContents(initiator_);
 111 }
 112
 113 scoped_ptr<CreatePresentationSessionRequest>
 114 MediaRouterDialogController::TakePresentationRequest() {
 115   return presentation_request_.Pass();
 116 }
 117
 118 void MediaRouterDialogController::Reset() {
 119   initiator_observer_.reset();
 120   presentation_request_.reset();
 121 }
 122
 123 }  // namespace media_router