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/wxprec.h"
  11
  12 #include "wx/wx.h"
  13
  14 #include "wx/mac/private.h"
  15
  16 #include "wx/mac/macnotfy.h"
  17
  18 const short kMaxEvents = 1000 ;
  19
  20 struct wxMacNotificationEvents
  21 {
  22     short top ;
  23     short bottom ;
  24
  25     wxMacNotificationProcPtr proc[kMaxEvents] ;
  26     unsigned long events[kMaxEvents] ;
  27     void* data[kMaxEvents] ;
  28 } ;
  29
  30 typedef struct wxMacNotificationEvents wxMacNotificationEvents ;
  31 static wxMacNotificationEvents gMacNotificationEvents ;
  32
  33 ProcessSerialNumber gAppProcess ;
  34
  35 void wxMacCreateNotifierTable()
  36 {
  37       GetCurrentProcess(&gAppProcess);
  38     gMacNotificationEvents.top = 0 ;
  39     gMacNotificationEvents.bottom = 0 ;
  40     for ( int i = 0 ; i < kMaxEvents ; ++i )
  41     {
  42         gMacNotificationEvents.proc[i] = NULL ;
  43         gMacNotificationEvents.events[i] = 0 ;
  44         gMacNotificationEvents.data[i] = NULL ;
  45     }
  46 }
  47
  48 void wxMacDestroyNotifierTable()
  49 {
  50 }
  51
  52 wxMacNotifierTableRef wxMacGetNotifierTable()
  53 {
  54     return (wxMacNotifierTableRef) &gMacNotificationEvents ;
  55 }
  56
  57 void wxMacAddEvent(
  58     wxMacNotifierTableRef table ,
  59     wxMacNotificationProcPtr handler ,
  60     unsigned long event ,
  61     void* data ,
  62     short wakeUp )
  63 {
  64     wxMacNotificationEvents *e = (wxMacNotificationEvents *) table ;
  65     wxASSERT_MSG( handler != NULL , wxT("illegal notification proc ptr") ) ;
  66     /* this should be protected eventually */
  67     short index = e->top++ ;
  68
  69     if ( e->top == kMaxEvents )
  70         e->top = 0 ;
  71
  72     e->proc[index] = handler ;
  73     e->events[index] = event ;
  74     e->data[index] = data ;
  75     if ( wakeUp )
  76         wxMacWakeUp() ;
  77 }
  78
  79 bool gInProcessing = false ;
  80
  81 void wxMacRemoveAllNotifiersForData( wxMacNotifierTableRef table , void* data )
  82 {
  83     wxMacNotificationEvents *e = (wxMacNotificationEvents *) table ;
  84     /* this should be protected eventually */
  85     short index = e->bottom ;
  86
  87     while ( e->top != index )
  88     {
  89         if ( e->data[index] == data )
  90             e->data[index] = NULL ;
  91         index++ ;
  92         if ( index == kMaxEvents )
  93             index = 0 ;
  94     }
  95 }
  96
  97 void wxMacProcessNotifierEvents()
  98 {
  99     //  if ( gInProcessing )
 100     //      return ;
 101
 102     gInProcessing = true ;
 103     if ( gMacNotificationEvents.top != gMacNotificationEvents.bottom )
 104     {
 105         // we only should process the notifiers that were here when we entered it
 106         // otherwise we might never get out...
 107         short count = gMacNotificationEvents.top - gMacNotificationEvents.bottom ;
 108         if ( count < 0 )
 109             count += kMaxEvents ;
 110
 111         while ( count-- )
 112         {
 113             // consume event at bottom
 114             short index = gMacNotificationEvents.bottom++ ;
 115             if ( gMacNotificationEvents.bottom == kMaxEvents )
 116                 gMacNotificationEvents.bottom = 0 ;
 117             void* data = gMacNotificationEvents.data[index] ;
 118             unsigned long event = gMacNotificationEvents.events[index] ;
 119             wxMacNotificationProcPtr handler =  gMacNotificationEvents.proc[index] ;
 120
 121             gMacNotificationEvents.data[index] = NULL ;
 122             gMacNotificationEvents.events[index] = 0 ;
 123             gMacNotificationEvents.proc[index]  = NULL ;
 124
 125             if ( handler )
 126                 handler( event , data  ) ;
 127         }
 128     }
 129     gInProcessing = false ;
 130 }
 131
 132 void wxMacProcessNotifierAndPendingEvents()
 133 {
 134     wxMacProcessNotifierEvents() ;
 135     wxTheApp->ProcessPendingEvents() ;
 136 }