1// Copyright (c) 2014 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#ifndef MOJO_SERVICES_CLIPBOARD_CLIPBOARD_STANDALONE_IMPL_H_
6#define MOJO_SERVICES_CLIPBOARD_CLIPBOARD_STANDALONE_IMPL_H_
7
8#include <base/memory/scoped_ptr.h>
9#include <string>
10
11#include "mojo/services/public/interfaces/clipboard/clipboard.mojom.h"
12
13namespace mojo {
14
15// Stub clipboard implementation.
16//
17// Eventually, we'll actually want to interact with the system clipboard, but
18// that's hard today because the system clipboard is asynchronous (on X11), the
19// ui::Clipboard interface is synchronous (which is what we'd use), mojo is
20// asynchronous across processes, and the WebClipboard interface is synchronous
21// (which is at least tractable).
22class ClipboardStandaloneImpl : public InterfaceImpl<mojo::Clipboard> {
23 public:
24  // mojo::Clipboard exposes three possible clipboards.
25  static const int kNumClipboards = 3;
26
27  ClipboardStandaloneImpl();
28  virtual ~ClipboardStandaloneImpl();
29
30  // InterfaceImpl<mojo::Clipboard> implementation.
31  virtual void GetSequenceNumber(Clipboard::Type clipboard_type,
32                                 const mojo::Callback<void(uint64_t)>& callback)
33      MOJO_OVERRIDE;
34  virtual void GetAvailableMimeTypes(
35      Clipboard::Type clipboard_types,
36      const mojo::Callback<void(mojo::Array<mojo::String>)>& callback)
37      MOJO_OVERRIDE;
38  virtual void ReadMimeType(
39      Clipboard::Type clipboard_type,
40      const mojo::String& mime_type,
41      const mojo::Callback<void(mojo::Array<uint8_t>)>& callback)
42      MOJO_OVERRIDE;
43  virtual void WriteClipboardData(Clipboard::Type clipboard_type,
44                                  mojo::Array<MimeTypePairPtr> data)
45      MOJO_OVERRIDE;
46
47 private:
48  uint64_t sequence_number_[kNumClipboards];
49
50  // Internal struct which stores the current state of the clipboard.
51  class ClipboardData;
52
53  // The current clipboard state. This is what is read from.
54  scoped_ptr<ClipboardData> clipboard_state_[kNumClipboards];
55
56  DISALLOW_COPY_AND_ASSIGN(ClipboardStandaloneImpl);
57};
58
59}  // namespace mojo
60
61#endif  // MOJO_SERVICES_CLIPBOARD_CLIPBOARD_STANDALONE_IMPL_H_
62