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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/* 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.
*
*/
#include "pegasus/constants.h"
#include "pegasus/notification.h"
namespace Pegasus {
typedef ReceiverList::iterator ReceiverIterator;
Notification::Notification(const NotificationID id, NotificationManager *owner) : IDObject(id) {
_owner = owner;
_currentFlags = kNoNotificationFlags;
if (_owner)
_owner->addNotification(this);
}
Notification::~Notification() {
for (uint i = 0; i < _receivers.size(); i++)
_receivers[i].receiver->newNotification(NULL);
if (_owner)
_owner->removeNotification(this);
}
// Selectively set or clear notificiation bits.
// Wherever mask is 0, leave existing bits untouched.
// Wherever mask is 1, set bit equivalent to flags.
void Notification::notifyMe(NotificationReceiver *receiver, NotificationFlags flags, NotificationFlags mask) {
for (uint i = 0; i < _receivers.size(); i++) {
if (_receivers[i].receiver == receiver) {
_receivers[i].mask = (_receivers[i].mask & ~mask) | (flags & mask);
receiver->newNotification(this);
return;
}
}
ReceiverEntry newEntry;
newEntry.receiver = receiver;
newEntry.mask = flags;
_receivers.push_back(newEntry);
receiver->newNotification(this);
}
void Notification::cancelNotification(NotificationReceiver *receiver) {
for (uint i = 0; i < _receivers.size(); i++) {
if (_receivers[i].receiver == receiver) {
_receivers.remove_at(i);
i--;
}
}
}
void Notification::setNotificationFlags(NotificationFlags flags, NotificationFlags mask) {
_currentFlags = (_currentFlags & ~mask) | flags;
}
void Notification::checkReceivers() {
NotificationFlags currentFlags = _currentFlags;
_currentFlags = kNoNotificationFlags;
for (uint i = 0; i < _receivers.size(); i++)
if (_receivers[i].mask & currentFlags)
_receivers[i].receiver->receiveNotification(this, currentFlags);
}
// Receiver entries are equal if their receivers are equal.
int operator==(const ReceiverEntry &entry1, const ReceiverEntry &entry2) {
return entry1.receiver == entry2.receiver;
}
int operator!=(const ReceiverEntry &entry1, const ReceiverEntry &entry2) {
return entry1.receiver != entry2.receiver;
}
NotificationReceiver::NotificationReceiver() {
_notification = NULL;
}
NotificationReceiver::~NotificationReceiver() {
if (_notification)
_notification->cancelNotification(this);
}
void NotificationReceiver::receiveNotification(Notification *, const NotificationFlags) {
}
void NotificationReceiver::newNotification(Notification *notification) {
_notification = notification;
}
typedef NotificationList::iterator NotificationIterator;
NotificationManager::NotificationManager() {
}
NotificationManager::~NotificationManager() {
detachNotifications();
}
void NotificationManager::addNotification(Notification *notification) {
_notifications.push_back(notification);
}
void NotificationManager::removeNotification(Notification *notification) {
for (NotificationIterator it = _notifications.begin(); it != _notifications.end();) {
if ((*it) == notification)
it = _notifications.erase(it);
else
it++;
}
}
void NotificationManager::detachNotifications() {
for (NotificationIterator it = _notifications.begin(); it != _notifications.end(); it++)
(*it)->_owner = 0;
}
void NotificationManager::checkNotifications() {
for (NotificationIterator it = _notifications.begin(); it != _notifications.end(); it++)
if ((*it)->_currentFlags != kNoNotificationFlags)
(*it)->checkReceivers();
}
} // End of namespace Pegasus
|
