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Annotation of libwww/Library/src/HTEvent.c, revision 2.7

2.1       eric        1: /*                                                                  HTEvntrg.c
                      2: **     EVENT DISPATCHER
                      3: **
                      4: **     (c) COPYRIGHT MIT 1996.
                      5: **     Please first read the full copyright statement in the file COPYRIGH.
2.7     ! frystyk     6: **      @(#) $Id: HTEvent.c,v 2.6 1996/12/13 22:06:01 eric Exp $
2.1       eric        7: **
                      8: **     The event dispatcher allows applications to register their own event
                      9: **     models. They may register the standard HTEventrg methods from 
                     10: **     HTEventrg.c, of implement their functionality with their on methods.
                     11: **
                     12: ** Authors:
                     13: **     EGP     Eric Gordon Prud'hommeuax
                     14: ** Bugs
                     15: **
                     16: */
                     17: 
                     18: /* Implementation dependent include files */
2.7     ! frystyk    19: #include "wwwsys.h"
2.2       frystyk    20: #include "WWWUtil.h"
2.1       eric       21: #include "HTEvent.h"                                    /* Implemented here */
                     22: 
2.2       frystyk    23: PRIVATE HTEvent_registerCallback * RegisterCBF = NULL;
                     24: PRIVATE HTEvent_unregisterCallback * UnregisterCBF = NULL;
2.1       eric       25: 
2.4       frystyk    26: /* ------------------------------------------------------------------------- */
                     27: 
2.1       eric       28: PUBLIC void HTEvent_setRegisterCallback(HTEvent_registerCallback * registerCBF)
                     29: {
2.2       frystyk    30:     if (CORE_TRACE) HTTrace("Event....... registering %p\n", registerCBF);
2.1       eric       31:     RegisterCBF = registerCBF;
                     32: }
                     33: 
                     34: PUBLIC void HTEvent_setUnregisterCallback(HTEvent_unregisterCallback * unregisterCBF)
                     35: {
2.2       frystyk    36:     if (CORE_TRACE) HTTrace("Event....... registering %p\n", unregisterCBF);
2.1       eric       37:     UnregisterCBF = unregisterCBF;
                     38: }
                     39: 
2.4       frystyk    40: PUBLIC int HTEvent_unregister (SOCKET s, HTEventType type)
                     41: {
                     42:     if (!UnregisterCBF) {
                     43:        if (CORE_TRACE) HTTrace("Event....... No handler registered\n");
                     44:         return -1;
                     45:     }
                     46:     return (*UnregisterCBF)(s, type);
                     47: }
2.1       eric       48: 
2.4       frystyk    49: PUBLIC int HTEvent_register(SOCKET s, HTEventType type, HTEvent * event)
2.1       eric       50: {
2.2       frystyk    51:     if (!RegisterCBF) {
                     52:        if (CORE_TRACE) HTTrace("Event....... No handler registered\n");
2.1       eric       53:         return -1;
2.2       frystyk    54:     }
2.4       frystyk    55:     return (*RegisterCBF)(s, type, event);
                     56: }
                     57: 
                     58: PUBLIC BOOL HTEvent_setCallback(HTEvent * event, HTEventCallback * cbf)
                     59: {
                     60:     if (!event) return NO;
                     61:     event->cbf = cbf;
                     62:     return YES;
                     63: }
                     64: 
                     65: PUBLIC HTEvent * HTEvent_new (HTEventCallback * cbf, void * context,
                     66:                              HTPriority priority, int millis)
                     67: {
                     68:     if (cbf) {
                     69:        HTEvent * me;
                     70:        if ((me = (HTEvent *) HT_CALLOC(1, sizeof(HTEvent))) == NULL)
                     71:            HT_OUTOFMEM("HTEvent_new");
                     72:        me->cbf = cbf;
                     73:        me->param = context;
                     74:        me->priority = priority;
                     75:        me->millis = millis;
2.5       frystyk    76:        if (CORE_TRACE)
                     77:            HTTrace("Event....... Created event %p with context %p, priority %d, and timeout %d\n",
                     78:                    me, context, priority, millis);
2.4       frystyk    79:        return me;
                     80:     }
                     81:     return NULL;
2.1       eric       82: }
                     83: 
2.4       frystyk    84: PUBLIC BOOL HTEvent_delete (HTEvent * me)
2.1       eric       85: {
2.4       frystyk    86:     if (me) {
                     87:        HT_FREE(me);
                     88:        if (CORE_TRACE) HTTrace("Event....... Deleted event %p\n", me);
                     89:        return YES;
                     90:     }
                     91:     return NO;
                     92: }
                     93: 
                     94: PUBLIC BOOL HTEvent_setParam(HTEvent * event, void * param)
                     95: {
                     96:     if (!event) return NO;
                     97:     event->param = param;
                     98:     return YES;
                     99: }
                    100: 
                    101: PUBLIC BOOL HTEvent_setPriority(HTEvent * event, HTPriority priority)
                    102: {
                    103:     if (!event) return NO;
                    104:     event->priority = priority;
                    105:     return YES;
                    106: }
                    107: 
                    108: PUBLIC BOOL HTEvent_setTimeout(HTEvent * event, int timeout)
                    109: {
                    110:     if (event) {
                    111:        event->millis = timeout;
                    112:        return YES;
2.2       frystyk   113:     }
2.4       frystyk   114:     return NO;
2.6       eric      115: }
                    116: 
                    117: PUBLIC char * HTEvent_type2str(HTEventType type)
                    118: {
                    119:     int i;
                    120:     static char space[20]; /* in case we have to sprintf type */
                    121:     static struct {int type; char * str;} match[] = {HT_EVENT_INITIALIZER};
                    122:     for (i = 0; i < sizeof(match)/sizeof(match[0]); i++)
                    123:        if (match[i].type == type)
                    124:            return match[i].str;
                    125:     sprintf(space, "0x%x", type);
                    126:     return space;
2.1       eric      127: }
                    128: