diff options
Diffstat (limited to 'engines/pegasus/MMShell/Notification/MMNotification.cpp')
-rwxr-xr-x | engines/pegasus/MMShell/Notification/MMNotification.cpp | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/engines/pegasus/MMShell/Notification/MMNotification.cpp b/engines/pegasus/MMShell/Notification/MMNotification.cpp new file mode 100755 index 0000000000..8b8d694358 --- /dev/null +++ b/engines/pegasus/MMShell/Notification/MMNotification.cpp @@ -0,0 +1,99 @@ +/* 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/MMShell/MMConstants.h" +#include "pegasus/MMShell/Notification/MMNotification.h" +#include "pegasus/MMShell/Notification/MMNotificationManager.h" +#include "pegasus/MMShell/Notification/MMNotificationReceiver.h" + +namespace Pegasus { + +typedef tReceiverList::iterator tReceiverIterator; + +MMNotification::MMNotification(const tNotificationID id, MMNotificationManager *owner) : MMIDObject(id) { + fOwner = owner; + fCurrentFlags = kNoNotificationFlags; + if (fOwner) + fOwner->AddNotification(this); +} + +MMNotification::~MMNotification() { + for (tReceiverIterator it = fReceivers.begin(); it != fReceivers.end(); it++) + it->fReceiver->NewNotification(NULL); + + if (fOwner) + fOwner->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 MMNotification::NotifyMe(MMNotificationReceiver* receiver, tNotificationFlags flags, tNotificationFlags mask) { + for (tReceiverIterator it = fReceivers.begin(); it != fReceivers.end(); it++) { + if (it->fReceiver == receiver) { + it->fMask = (it->fMask & ~mask) | (flags & mask); + receiver->NewNotification(this); + return; + } + } + + tReceiverEntry newEntry; + newEntry.fReceiver = receiver; + newEntry.fMask = flags; + fReceivers.push_back(newEntry); + + receiver->NewNotification(this); +} + +void MMNotification::CancelNotification(MMNotificationReceiver *receiver) { + for (tReceiverIterator it = fReceivers.begin(); it != fReceivers.end(); it++) + if (it->fReceiver == receiver) + fReceivers.erase(it); +} + +void MMNotification::SetNotificationFlags(tNotificationFlags flags, tNotificationFlags mask) { + fCurrentFlags = (fCurrentFlags & ~mask) | flags; +} + +void MMNotification::CheckReceivers() { + tNotificationFlags currentFlags = fCurrentFlags; + fCurrentFlags = kNoNotificationFlags; + + for (tReceiverIterator it = fReceivers.begin(); it != fReceivers.end(); it++) + if (it->fMask & currentFlags) + it->fReceiver->ReceiveNotification(this, currentFlags); +} + +// Receiver entries are equal if their receivers are equal. + +int operator==(const tReceiverEntry &entry1, const tReceiverEntry &entry2) { + return entry1.fReceiver == entry2.fReceiver; +} + +int operator!=(const tReceiverEntry &entry1, const tReceiverEntry &entry2) { + return entry1.fReceiver != entry2.fReceiver; +} + +} // End of namespace Pegasus |