components: Add Exosphere component.

components/exo/wayland/server.h

+// Copyright 2015 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 COMPONENTS_EXO_WAYLAND_SERVER_H_
+#define COMPONENTS_EXO_WAYLAND_SERVER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/time/time.h"
+#include "components/exo/exo_export.h"
+#include "components/exo/wayland/scoped_wl_types.h"
+
+namespace exo {
+class Display;
+
+namespace wayland {
+
+// This class is a thin wrapper around a Wayland display server. All Wayland
+// requests are dispatched into the given Exospere display.
+class EXO_EXPORT Server {
+ public:
+  explicit Server(Display* display);
+  ~Server();
+
+  // Creates a Wayland display server that clients can connect to using the
+  // default socket name.
+  static scoped_ptr<Server> Create(Display* display);
+
+  // This adds a Unix socket to the Wayland display server which can be used
+  // by clients to connect to the display server.
+  bool AddSocket(const std::string name);
+
+  // Returns the file descriptor associated with the server.
+  int GetFileDescriptor() const;
+
+  // This function dispatches events. This must be called on a thread for
+  // which it's safe to access the Exospere display that this server was
+  // created for. The |timeout| argument specifies the amount of time that
+  // Dispatch() should block waiting for the file descriptor to become ready.
+  void Dispatch(base::TimeDelta timeout);
+
+  // Send all buffered events to the clients.
+  void Flush();
+
+ private:
+  Display* const display_;
+  ScopedWLDisplay wl_display_;
+
+  DISALLOW_COPY_AND_ASSIGN(Server);
+};
+
+}  // namespace wayland
+}  // namespace exo
+
+#endif  // COMPONENTS_EXO_WAYLAND_SERVER_H_