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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* Additional copyright for this file:
* Copyright (C) 1995-1997 Presto Studios, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef PEGASUS_NOTIFICATION_H
#define PEGASUS_NOTIFICATION_H
#include "common/list.h"
#include "pegasus/types.h"
#include "pegasus/util.h"
namespace Pegasus {
class NotificationManager;
class NotificationReceiver;
struct tReceiverEntry {
NotificationReceiver *receiver;
tNotificationFlags mask;
};
int operator==(const tReceiverEntry &entry1, const tReceiverEntry &entry1);
int operator!=(const tReceiverEntry &entry1, const tReceiverEntry &entry1);
typedef Common::List<tReceiverEntry> tReceiverList;
/*
A notification can have 32 flags associated with it, which can be user-defined.
*/
class Notification : public IDObject {
friend class NotificationManager;
public:
Notification(const tNotificationID id, NotificationManager *owner);
virtual ~Notification();
// NotifyMe will have this receiver notified when any of the specified notification
// flags are set.
// If there is already a notification set for this receiver, NotifyMe does a bitwise
// OR with the receiver's current notification flags.
// Can selectively set or clear notification bits by using the flags and mask argument.
void notifyMe(NotificationReceiver*, tNotificationFlags flags, tNotificationFlags mask);
void cancelNotification(NotificationReceiver *receiver);
void setNotificationFlags(tNotificationFlags flags, tNotificationFlags mask);
tNotificationFlags getNotificationFlags() { return _currentFlags; }
void clearNotificationFlags() { setNotificationFlags(0, ~(tNotificationFlags)0); }
protected:
void checkReceivers();
NotificationManager *_owner;
tReceiverList _receivers;
tNotificationFlags _currentFlags;
};
class NotificationReceiver {
friend class Notification;
public:
NotificationReceiver();
virtual ~NotificationReceiver();
protected:
// ReceiveNotification is called automatically whenever a notification that this
// receiver depends on has its flags set
virtual void receiveNotification(Notification *, const tNotificationFlags);
virtual void newNotification(Notification *notification);
private:
Notification *_notification;
};
typedef Common::List<Notification *> tNotificationList;
class NotificationManager : public NotificationReceiver {
friend class Notification;
public:
NotificationManager();
virtual ~NotificationManager();
void checkNotifications();
protected:
void addNotification(Notification *notification);
void removeNotification(Notification *notification);
void detachNotifications();
tNotificationList _notifications;
};
} // End of namespace Pegasus
#endif
|
