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102 lines
2.5 KiB
102 lines
2.5 KiB
15 years ago
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/*
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Copyright (C) 2000-2001 Stefan Westerfeld
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stefan@space.twc.de
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include "notification.h"
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#include "debug.h"
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#include "dispatcher.h"
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using namespace Arts;
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void NotificationClient::notify(const Notification&)
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{
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}
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NotificationManager::NotificationManager()
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{
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arts_assert(!instance);
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instance = this;
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}
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NotificationManager::~NotificationManager()
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{
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arts_assert(instance);
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instance = 0;
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}
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void NotificationManager::send(Notification wm)
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{
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if (todo.empty()) {
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// HACK: in order to not add a virtual function to IOManager we're calling addTimer with
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// magic values. This call tells the ioManager that notifications are pending and
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// NotificationManager::run() should get called soon.
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Arts::Dispatcher::the()->ioManager()->addTimer(-1, 0);
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}
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todo.push(wm);
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}
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bool NotificationManager::run()
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{
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if(todo.empty()) return false;
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while(!todo.empty())
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{
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Notification wm = todo.front();
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todo.pop();
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/*
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* we'll copy and remove the notification first, to be sure that
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* nothing bad happens to it if we rebuild "todo" (for instance in
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* removeClient)
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*/
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wm.receiver->notify(wm);
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}
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return true;
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}
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void NotificationManager::removeClient(NotificationClient *client)
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{
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std::queue<Notification> newTodo;
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while(!todo.empty())
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{
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const Notification& n = todo.front();
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if(n.receiver != client)
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newTodo.push(n);
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else
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{
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arts_debug("NotificationManager: removing one notification");
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NotificationDestroyFunction destroy =
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(NotificationDestroyFunction)n.internal;
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if(destroy) destroy(n);
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}
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todo.pop();
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}
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todo = newTodo;
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}
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void Notification::setDestroy(NotificationDestroyFunction destroy)
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{
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internal = (void*)destroy;
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}
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NotificationManager *NotificationManager::instance = 0;
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