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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/************************************************************************
*
* Copyright (C) 2009-2024 IRCAD France
* Copyright (C) 2012-2021 IHU Strasbourg
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#pragma once
#include <sight/core/config.hpp>
#include "core/com/slot_connection_base.hpp"
namespace sight::core::com
{
/// Class managing Signal-Slot connections.
struct SIGHT_CORE_CLASS_API connection
{
/// Class allowing to block a Connection.
struct blocker
{
blocker()
= default;
blocker(connection _connection) :
m_blocker(_connection.get_blocker())
{
}
/// Unblock the related Connection.
void reset()
{
m_blocker.reset();
}
protected:
slot_connection_base::blocker_sptr_type m_blocker;
};
connection()
= default;
connection(const slot_connection_base::sptr& _connection) :
m_connection_base(_connection)
{
}
/// Disconnect related Connection.
void disconnect()
{
slot_connection_base::sptr connection(m_connection_base.lock());
if(connection)
{
connection->disconnect();
}
}
/// Returns whether this Connection is expired or not.
[[nodiscard]] bool expired() const
{
return m_connection_base.expired();
}
protected:
/// Returns a Blocker.
slot_connection_base::blocker_sptr_type get_blocker()
{
slot_connection_base::blocker_sptr_type blocker;
slot_connection_base::sptr connection(m_connection_base.lock());
if(connection)
{
blocker = connection->get_blocker();
}
return blocker;
}
slot_connection_base::wptr m_connection_base;
};
} // namespace sight::core::com
|
