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1 /*
2 * Copyright (c) 2002-2007 Daniel Elstner <daniel.kitta@gmail.com>
3 *
4 * This file is part of regexxer.
5 *
6 * regexxer is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * regexxer is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with regexxer; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef REGEXXER_SIGNALUTILS_H_INCLUDED
22 #define REGEXXER_SIGNALUTILS_H_INCLUDED
23
24 #include <glibmm.h>
25
26
27 namespace Util
28 {
29
30 class QueuedSignal : public sigc::trackable
31 {
32 public:
33 explicit QueuedSignal(int priority = Glib::PRIORITY_HIGH_IDLE);
34 virtual ~QueuedSignal();
35
36 sigc::connection connect(const sigc::slot<void>& slot);
37 void queue();
38 void operator()() { queue(); }
39
40 private:
41 sigc::signal<void> signal_;
42 int priority_;
43 bool queued_;
44
45 QueuedSignal(const QueuedSignal&);
46 QueuedSignal& operator=(const QueuedSignal&);
47
48 bool idle_handler();
49 };
50
51 class AutoConnection
52 {
53 private:
54 sigc::connection connection_;
55 bool blocked_;
56
57 AutoConnection(const AutoConnection&);
58 AutoConnection& operator=(const AutoConnection&);
59
60 public:
61 AutoConnection();
62 explicit AutoConnection(const sigc::connection& connection);
63 ~AutoConnection();
64
65 void block();
66 void unblock();
67 bool blocked() const { return blocked_; }
68
69 AutoConnection& operator=(const sigc::connection& connection);
70 void disconnect();
71
72 sigc::connection& base() { return connection_; }
73 const sigc::connection& base() const { return connection_; }
74 };
75
76 class ScopedConnection
77 {
78 private:
79 sigc::connection connection_;
80
81 ScopedConnection(const ScopedConnection&);
82 ScopedConnection& operator=(const ScopedConnection&);
83
84 public:
85 explicit ScopedConnection(const sigc::connection& connection)
86 : connection_ (connection) {}
87
88 ~ScopedConnection() { connection_.disconnect(); }
89 };
90
91 class ScopedBlock
92 {
93 private:
94 AutoConnection& connection_;
95
96 ScopedBlock(const ScopedBlock&);
97 ScopedBlock& operator=(const ScopedBlock&);
98
99 public:
100 explicit ScopedBlock(AutoConnection& connection)
101 : connection_ (connection) { connection_.block(); }
102
103 ~ScopedBlock() { connection_.unblock(); }
104 };
105
106 } // namespace Util
107
108 #endif /* REGEXXER_SIGNALUTILS_H_INCLUDED */