Ozone integration.

ui/ozone/platform/drm/host/drm_window_host_manager.h

+// 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.
+
+#ifndef UI_OZONE_PLATFORM_DRM_HOST_DRM_WINDOW_HOST_MANAGER_H_
+#define UI_OZONE_PLATFORM_DRM_HOST_DRM_WINDOW_HOST_MANAGER_H_
+
+#include <map>
+
+#include "base/memory/scoped_ptr.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace gfx {
+class Point;
+}
+
+namespace ui {
+
+class DrmGpuPlatformSupportHost;
+class DrmWindowHost;
+
+// Responsible for keeping the mapping between the allocated widgets and
+// windows.
+class DrmWindowHostManager {
+ public:
+  DrmWindowHostManager();
+  ~DrmWindowHostManager();
+
+  gfx::AcceleratedWidget NextAcceleratedWidget();
+
+  // Adds a window for |widget|. Note: |widget| should not be associated when
+  // calling this function.
+  void AddWindow(gfx::AcceleratedWidget widget, DrmWindowHost* window);
+
+  // Removes the window association for |widget|. Note: |widget| must be
+  // associated with a window when calling this function.
+  void RemoveWindow(gfx::AcceleratedWidget widget);
+
+  // Returns the window associated with |widget|. Note: This function should
+  // only be called if a valid window has been associated.
+  DrmWindowHost* GetWindow(gfx::AcceleratedWidget widget);
+
+  // Returns the window containing the specified screen location, or NULL.
+  DrmWindowHost* GetWindowAt(const gfx::Point& location);
+
+  // Returns a window. Probably the first one created.
+  DrmWindowHost* GetPrimaryWindow();
+
+  // Tries to set a given widget as the recipient for events. It will
+  // fail if there is already another widget as recipient.
+  void GrabEvents(gfx::AcceleratedWidget widget);
+
+  // Unsets a given widget as the recipient for events.
+  void UngrabEvents(gfx::AcceleratedWidget widget);
+
+  // Gets the current widget recipient of mouse events.
+  gfx::AcceleratedWidget event_grabber() const { return event_grabber_; }
+
+ private:
+  typedef std::map<gfx::AcceleratedWidget, DrmWindowHost*> WidgetToWindowMap;
+
+  gfx::AcceleratedWidget last_allocated_widget_ = 0;
+  WidgetToWindowMap window_map_;
+
+  gfx::AcceleratedWidget event_grabber_ = gfx::kNullAcceleratedWidget;
+
+  DISALLOW_COPY_AND_ASSIGN(DrmWindowHostManager);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_DRM_HOST_DRM_WINDOW_HOST_MANAGER_H_