[Chromecast] Turn CastContentWindow into an abstract interface.

chromecast/browser/cast_content_window.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chromecast/browser/cast_content_window.h"
-
-#include "base/macros.h"
-#include "base/memory/ptr_util.h"
-#include "base/threading/thread_restrictions.h"
-#include "chromecast/base/metrics/cast_metrics_helper.h"
-#include "chromecast/browser/cast_browser_process.h"
-#include "chromecast/graphics/cast_vsync_settings.h"
-#include "content/public/browser/render_view_host.h"
-#include "content/public/browser/render_widget_host.h"
-#include "content/public/browser/render_widget_host_view.h"
-#include "content/public/browser/web_contents.h"
-#include "ipc/ipc_message.h"
-#include "ui/display/display.h"
-#include "ui/display/screen.h"
-
-#if defined(USE_AURA)
-#include "chromecast/graphics/cast_screen.h"
-#include "ui/aura/env.h"
-#include "ui/aura/layout_manager.h"
-#include "ui/aura/window.h"
-#include "ui/aura/window_tree_host.h"
-#endif
-
-namespace chromecast {
-namespace shell {
-
-#if defined(USE_AURA)
-class CastFillLayout : public aura::LayoutManager {
- public:
-  explicit CastFillLayout(aura::Window* root) : root_(root) {}
-  ~CastFillLayout() override {}
-
- private:
-  void OnWindowResized() override {}
-
-  void OnWindowAddedToLayout(aura::Window* child) override {
-    child->SetBounds(root_->bounds());
-  }
-
-  void OnWillRemoveWindowFromLayout(aura::Window* child) override {}
-
-  void OnWindowRemovedFromLayout(aura::Window* child) override {}
-
-  void OnChildWindowVisibilityChanged(aura::Window* child,
-                                      bool visible) override {}
-
-  void SetChildBounds(aura::Window* child,
-                      const gfx::Rect& requested_bounds) override {
-    SetChildBoundsDirect(child, requested_bounds);
-  }
-
-  aura::Window* root_;
-
-  DISALLOW_COPY_AND_ASSIGN(CastFillLayout);
-};
-#endif
-
-CastContentWindow::CastContentWindow() : transparent_(false) {
-}
-
-CastContentWindow::~CastContentWindow() {
-#if defined(USE_AURA)
-  CastVSyncSettings::GetInstance()->RemoveObserver(this);
-  window_tree_host_.reset();
-  // We don't delete the screen here to avoid a CHECK failure when
-  // the screen size is queried periodically for metric gathering. b/18101124
-#endif
-}
-
-void CastContentWindow::CreateWindowTree(content::WebContents* web_contents) {
-#if defined(USE_AURA)
-  // Aura initialization
-  DCHECK(display::Screen::GetScreen());
-  gfx::Size display_size =
-      display::Screen::GetScreen()->GetPrimaryDisplay().GetSizeInPixel();
-  CHECK(aura::Env::GetInstance());
-  window_tree_host_.reset(
-      aura::WindowTreeHost::Create(gfx::Rect(display_size)));
-  window_tree_host_->InitHost();
-  window_tree_host_->window()->SetLayoutManager(
-      new CastFillLayout(window_tree_host_->window()));
-
-  if (transparent_) {
-    window_tree_host_->compositor()->SetBackgroundColor(SK_ColorTRANSPARENT);
-    window_tree_host_->compositor()->SetHostHasTransparentBackground(true);
-  } else {
-    window_tree_host_->compositor()->SetBackgroundColor(SK_ColorBLACK);
-  }
-
-  CastVSyncSettings::GetInstance()->AddObserver(this);
-  window_tree_host_->compositor()->SetAuthoritativeVSyncInterval(
-      CastVSyncSettings::GetInstance()->GetVSyncInterval());
-
-  window_tree_host_->Show();
-
-  // Add and show content's view/window
-  aura::Window* content_window = web_contents->GetNativeView();
-  aura::Window* parent = window_tree_host_->window();
-  if (!parent->Contains(content_window)) {
-    parent->AddChild(content_window);
-  }
-  content_window->Show();
-#endif
-}
-
-std::unique_ptr<content::WebContents> CastContentWindow::CreateWebContents(
-    content::BrowserContext* browser_context) {
-  CHECK(display::Screen::GetScreen());
-  gfx::Size display_size =
-      display::Screen::GetScreen()->GetPrimaryDisplay().size();
-
-  content::WebContents::CreateParams create_params(browser_context, NULL);
-  create_params.routing_id = MSG_ROUTING_NONE;
-  create_params.initial_size = display_size;
-  content::WebContents* web_contents = content::WebContents::Create(
-      create_params);
-
-#if defined(USE_AURA)
-  // Resize window
-  aura::Window* content_window = web_contents->GetNativeView();
-  content_window->SetBounds(gfx::Rect(display_size.width(),
-                                      display_size.height()));
-#endif
-
-  content::WebContentsObserver::Observe(web_contents);
-  return base::WrapUnique(web_contents);
-}
-
-void CastContentWindow::DidFirstVisuallyNonEmptyPaint() {
-  metrics::CastMetricsHelper::GetInstance()->LogTimeToFirstPaint();
-}
-
-void CastContentWindow::MediaStoppedPlaying(const MediaPlayerInfo& media_info,
-                                            const MediaPlayerId& id) {
-  metrics::CastMetricsHelper::GetInstance()->LogMediaPause();
-}
-
-void CastContentWindow::MediaStartedPlaying(const MediaPlayerInfo& media_info,
-                                            const MediaPlayerId& id) {
-  metrics::CastMetricsHelper::GetInstance()->LogMediaPlay();
-}
-
-void CastContentWindow::RenderViewCreated(
-    content::RenderViewHost* render_view_host) {
-  content::RenderWidgetHostView* view =
-      render_view_host->GetWidget()->GetView();
-  if (view)
-    view->SetBackgroundColor(transparent_ ? SK_ColorTRANSPARENT
-                                          : SK_ColorBLACK);
-}
-
-void CastContentWindow::OnVSyncIntervalChanged(base::TimeDelta interval) {
-#if defined(USE_AURA)
-  window_tree_host_->compositor()->SetAuthoritativeVSyncInterval(
-      interval);
-#endif
-}
-
-}  // namespace shell
-}  // namespace chromecast