blob: 6c5c7f83fd62560d0dbdcf356a07abac02be68f7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
// Copyright (c) 2013 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_BASE_X_SELECTION_OWNER_H_
#define UI_BASE_X_SELECTION_OWNER_H_
#include <X11/Xlib.h>
// Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
#undef RootWindow
#include <vector>
#include "base/basictypes.h"
#include "base/callback.h"
#include "ui/base/ui_export.h"
#include "ui/base/x/selection_utils.h"
#include "ui/base/x/x11_atom_cache.h"
namespace ui {
// Owns a specific X11 selection on an X window.
//
// The selection owner object keeps track of which xwindow is the current
// owner, and when its |xwindow_|, offers different data types to other
// processes.
class UI_EXPORT SelectionOwner {
public:
SelectionOwner(Display* xdisplay,
::Window xwindow,
::Atom selection_name);
~SelectionOwner();
// Returns the current selection data. Useful for fast paths.
const SelectionFormatMap& selection_format_map() { return format_map_; }
// Retrieves a list of types we're offering.
void RetrieveTargets(std::vector<Atom>* targets);
// Attempts to take ownership of the selection. If we're successful, present
// |data| to other windows.
void TakeOwnershipOfSelection(const SelectionFormatMap& data);
// Releases the selection (if we own it) and clears any data we own.
void Clear();
// It is our owner's responsibility to plumb X11 events on |xwindow_| to us.
void OnSelectionRequest(const XSelectionRequestEvent& event);
void OnSelectionClear(const XSelectionClearEvent& event);
// TODO(erg): Do we also need to follow PropertyNotify events? We currently
// don't, but there were open todos in the previous implementation.
private:
// Our X11 state.
Display* x_display_;
::Window x_window_;
// The X11 selection that this instance communicates on.
::Atom selection_name_;
// The data we are currently serving.
SelectionFormatMap format_map_;
X11AtomCache atom_cache_;
DISALLOW_COPY_AND_ASSIGN(SelectionOwner);
};
} // namespace ui
#endif // UI_BASE_X_SELECTION_OWNER_H_
|
