source: cpp/frams/util/callbacks.cpp @ 111

// This file is a part of the Framsticks GDK library.
// Copyright (C) 2002-2011  Szymon Ulatowski.  See LICENSE.txt for details.
// Refer to http://www.framsticks.com/ for further information.

#include "callbacks.h"
#include <stdio.h>

#ifdef USEMEMBERCALLBACK
int MemberCallbackNode::equals(CallbackNode*n)
{
if (n==this) return 1;
MemberCallbackNode *classok=dynamic_cast<MemberCallbackNode*>(n);
if (!classok) return 0;
return ((userdata==classok->userdata)&&(object==classok->object)&&(member==classok->member));
}
#endif

int FunctionCallbackNode::equals(CallbackNode*n)
{
if (n==this) return 1;
FunctionCallbackNode *classok=dynamic_cast<FunctionCallbackNode*>(n);
if (!classok) return 0;
return ((userdata==classok->userdata)&&(fun==classok->fun));
}

int StatrickCallbackNode::equals(CallbackNode*n)
{
if (n==this) return 1;
StatrickCallbackNode *classok=dynamic_cast<StatrickCallbackNode*>(n);
if (!classok) return 0;
return ((object==classok->object)&&(userdata==classok->userdata)&&(fun==classok->fun));
}

/////////////////

CallbackNode* Callback::add(CallbackNode*n)
{
SList::operator+=(n);
return n;
}

void Callback::removeNode(CallbackNode*n)
{
SList::operator-=(n);
delete n;
}

void Callback::remove(CallbackNode*node)
{
CallbackNode *n;
//printf("Hint: removing callbacks (former 'DuoList') is more efficient using removeNode(). (refer to 'callbacks.h')\n");
for (int i=0;n=(CallbackNode *)operator()(i);i++)
        if (node->equals(n))
                {
                SList::operator-=(i);
                delete node;
                if (n!=node) delete n;
                return;
                }
delete node; // tu nie wiem czy na pewno...
}

void Callback::action(long data)
{
FOREACH(CallbackNode*,n,(*this))
        n->action(data);
}

Callback::~Callback()
{
CallbackNode *n;
for (int i=size()-1;i>=0;i--)
        {
        n=(CallbackNode *)operator()(i);
        delete n;
// todo: zrobic zeby kolejnosc delete callbacknode <-> delete callback nie wplywala na poprawne dzialania
// blad odkryty 24.01 pokazal, ze deletowanie callbacknodow w ~callback
// moze powodowac problemy, jezeli obiekty sa usuwane w "zlej" kolejnosci
// ale na razie tak zostanie
        }
}