src/mac/carbon/macnotfy.cpp

   1 /* -------------------------------------------------------------------------
   2  * Project: Mac Notifier Support
   3  * Name:    macnotfy.c
   4  * Author:  Stefan CSomor
   5  * Purpose: Mac Notifier main file
   6  * CVSID:   $Id$
   7  * -------------------------------------------------------------------------
   8  */
   9
  10 #include "wx/wx.h"
  11
  12 #include "wx/mac/private.h"
  13
  14 #include "wx/mac/macnotfy.h"
  15
  16 const short kMaxEvents = 1000 ;
  17
  18 struct wxMacNotificationEvents
  19 {
  20     short top ;
  21     short bottom ;
  22
  23     wxMacNotificationProcPtr proc[kMaxEvents] ;
  24     unsigned long events[kMaxEvents] ;
  25     void* data[kMaxEvents] ;
  26 } ;
  27
  28 typedef struct wxMacNotificationEvents wxMacNotificationEvents ;
  29 static wxMacNotificationEvents gMacNotificationEvents ;
  30
  31 ProcessSerialNumber gAppProcess ;
  32
  33 void wxMacCreateNotifierTable()
  34 {
  35       GetCurrentProcess(&gAppProcess);
  36     gMacNotificationEvents.top = 0 ;
  37     gMacNotificationEvents.bottom = 0 ;
  38     for ( int i = 0 ; i < kMaxEvents ; ++i )
  39     {
  40         gMacNotificationEvents.proc[i] = NULL ;
  41         gMacNotificationEvents.events[i] = NULL ;
  42         gMacNotificationEvents.data[i] = NULL ;
  43     }
  44 }
  45
  46 void wxMacDestroyNotifierTable()
  47 {
  48 }
  49
  50 wxMacNotifierTableRef wxMacGetNotifierTable()
  51 {
  52     return (wxMacNotifierTableRef) &gMacNotificationEvents ;
  53 }
  54
  55 void wxMacAddEvent(
  56     wxMacNotifierTableRef table ,
  57     wxMacNotificationProcPtr handler ,
  58     unsigned long event ,
  59     void* data ,
  60     short wakeUp )
  61 {
  62     wxMacNotificationEvents *e = (wxMacNotificationEvents *) table ;
  63     wxASSERT_MSG( handler != NULL , wxT("illegal notification proc ptr") ) ;
  64     /* this should be protected eventually */
  65     short index = e->top++ ;
  66
  67     if ( e->top == kMaxEvents )
  68         e->top = 0 ;
  69
  70     e->proc[index] = handler ;
  71     e->events[index] = event ;
  72     e->data[index] = data ;
  73     if ( wakeUp )
  74         wxMacWakeUp() ;
  75 }
  76
  77 bool gInProcessing = false ;
  78
  79 void wxMacRemoveAllNotifiersForData( wxMacNotifierTableRef table , void* data )
  80 {
  81     wxMacNotificationEvents *e = (wxMacNotificationEvents *) table ;
  82     /* this should be protected eventually */
  83     short index = e->bottom ;
  84
  85     while ( e->top != index )
  86     {
  87         if ( e->data[index] == data )
  88             e->data[index] = NULL ;
  89         index++ ;
  90         if ( index == kMaxEvents )
  91             index = 0 ;
  92     }
  93 }
  94
  95 void wxMacProcessNotifierEvents()
  96 {
  97     //  if ( gInProcessing )
  98     //      return ;
  99
 100     gInProcessing = true ;
 101     if ( gMacNotificationEvents.top != gMacNotificationEvents.bottom )
 102     {
 103         // we only should process the notifiers that were here when we entered it
 104         // otherwise we might never get out...
 105         short count = gMacNotificationEvents.top - gMacNotificationEvents.bottom ;
 106         if ( count < 0 )
 107             count += kMaxEvents ;
 108
 109         while ( count-- )
 110         {
 111             // consume event at bottom
 112             short index = gMacNotificationEvents.bottom++ ;
 113             if ( gMacNotificationEvents.bottom == kMaxEvents )
 114                 gMacNotificationEvents.bottom = 0 ;
 115             void* data = gMacNotificationEvents.data[index] ;
 116             unsigned long event = gMacNotificationEvents.events[index] ;
 117             wxMacNotificationProcPtr handler =  gMacNotificationEvents.proc[index] ;
 118
 119             gMacNotificationEvents.data[index] = NULL ;
 120             gMacNotificationEvents.events[index] = NULL ;
 121             gMacNotificationEvents.proc[index]  = NULL ;
 122
 123             if ( handler )
 124                 handler( event , data  ) ;
 125         }
 126     }
 127     gInProcessing = false ;
 128 }
 129
 130 void wxMacProcessNotifierAndPendingEvents()
 131 {
 132     wxMacProcessNotifierEvents() ;
 133     wxTheApp->ProcessPendingEvents() ;
 134 }