[Chromecast] Reuse the Aura window manager across receiver apps.

chromecast/graphics/cast_window_manager.h

Index: chromecast/graphics/cast_window_manager.h
diff --git a/chromecast/graphics/cast_window_manager.h b/chromecast/graphics/cast_window_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..43e10bccce4bebc6289abe0169cfe2ffb27174ab
--- /dev/null
+++ b/chromecast/graphics/cast_window_manager.h
@@ -0,0 +1,43 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.

[derekjchow1, 2017/01/18 02:49:12]

2016 + 1

[Joshua LeVasseur, 2017/01/18 18:26:35]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+#ifndef CHROMECAST_GRAPHICS_CAST_WINDOW_MANAGER_H_
+#define CHROMECAST_GRAPHICS_CAST_WINDOW_MANAGER_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace chromecast {
+
+// Chromecast's window-manager interface.
+// This declares the interface to add top-level windows to the Chromecast
+// platform window.  It is owned by the UI thread, and generally one instance
+// should exist per platform root window (e.g., in Ozone, one per Ozone window).
+class CastWindowManager {
+ public:
+  // Creates the platform-specific CastWindowManager.
+  static std::unique_ptr<CastWindowManager> Create(bool enable_input);
+
+  virtual ~CastWindowManager() {}
+
+  // Allocate the graphics resources and show.
+  // Can be called multiple times, including after TearDown().
+  virtual void Setup() = 0;
+
+  // Remove all windows and release all graphics resources.
+  // Can be called multiple times.
+  virtual void TearDown() = 0;
+
+  // Adds a window to the window manager and shows the window.
+  virtual void AddAndShowWindow(gfx::NativeView window) = 0;

[derekjchow1, 2017/01/18 02:49:12]

How is a window removed? How is a window hidden?

[Joshua LeVasseur, 2017/01/18 06:00:57]

That is platform dependent.  For Aura, you directly operate on the window to
hide/unhide or remove (our code removes these windows by deleting the windows).

[derekjchow1, 2017/01/19 01:16:27]

Any comment on z-order? Or will the issue be solved in next CL?

+
+  // Adds a window to the window manager without adjusting the window's
+  // visibility.
+  virtual void AddWindow(gfx::NativeView window) = 0;
+};
+
+}  // namespace chromecast
+
+#endif  // CHROMECAST_GRAPHICS_CAST_WINDOW_MANAGER_H_