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+/* 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/MMShell/Utilities/MMIDObject.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 MMIDObject {
+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