src/palmos/evtloop.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/palmos/evtloop.cpp
   3 // Purpose:     implements wxEventLoop for Palm OS
   4 // Author:      William Osborne - minimal working wxPalmOS port
   5 // Modified by:
   6 // Created:     10.14.04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) William Osborne
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "evtloop.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/window.h"
  33     #include "wx/app.h"
  34 #endif //WX_PRECOMP
  35
  36 #include "wx/evtloop.h"
  37
  38 #include "wx/tooltip.h"
  39 #include "wx/except.h"
  40 #include "wx/ptr_scpd.h"
  41
  42 #if wxUSE_THREADS
  43     #include "wx/thread.h"
  44
  45     // define the array of MSG strutures
  46     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  47
  48     #include "wx/arrimpl.cpp"
  49
  50     WX_DEFINE_OBJARRAY(wxMsgArray);
  51 #endif // wxUSE_THREADS
  52
  53 #include <Event.h>
  54 #include <SystemMgr.h>
  55 #include <Menu.h>
  56 #include <Form.h>
  57
  58 // ----------------------------------------------------------------------------
  59 // helper class
  60 // ----------------------------------------------------------------------------
  61
  62 // this object sets the wxEventLoop given to the ctor as the currently active
  63 // one and unsets it in its dtor
  64 class wxEventLoopActivator
  65 {
  66 public:
  67     wxEventLoopActivator(wxEventLoop **pActive,
  68                          wxEventLoop *evtLoop)
  69     {
  70         m_pActive = pActive;
  71         m_evtLoopOld = *pActive;
  72         *pActive = evtLoop;
  73     }
  74
  75     ~wxEventLoopActivator()
  76     {
  77         // restore the previously active event loop
  78         *m_pActive = m_evtLoopOld;
  79     }
  80
  81 private:
  82     wxEventLoop *m_evtLoopOld;
  83     wxEventLoop **m_pActive;
  84 };
  85
  86 // ============================================================================
  87 // wxEventLoop implementation
  88 // ============================================================================
  89
  90 wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
  91
  92 // ----------------------------------------------------------------------------
  93 // ctor/dtor
  94 // ----------------------------------------------------------------------------
  95
  96 wxEventLoop::wxEventLoop()
  97 {
  98     m_shouldExit = false;
  99     m_exitcode = 0;
 100 }
 101
 102 // ----------------------------------------------------------------------------
 103 // wxEventLoop message processing
 104 // ----------------------------------------------------------------------------
 105
 106 void wxEventLoop::ProcessMessage(WXMSG *msg)
 107 {
 108 }
 109
 110 bool wxEventLoop::PreProcessMessage(WXMSG *msg)
 111 {
 112     return false;
 113 }
 114
 115 // ----------------------------------------------------------------------------
 116 // wxEventLoop running and exiting
 117 // ----------------------------------------------------------------------------
 118
 119 bool wxEventLoop::IsRunning() const
 120 {
 121     return true;
 122 }
 123
 124 int wxEventLoop::Run()
 125 {
 126     status_t    error;
 127     EventType    event;
 128
 129     do {
 130         wxTheApp && wxTheApp->ProcessIdle();
 131
 132         EvtGetEvent(&event, evtWaitForever);
 133
 134         if (SysHandleEvent(&event))
 135             continue;
 136
 137         if (MenuHandleEvent(0, &event, &error))
 138             continue;
 139
 140         FrmDispatchEvent(&event);
 141
 142     } while (event.eType != appStopEvent);
 143
 144     return 0;
 145 }
 146
 147 void wxEventLoop::Exit(int rc)
 148 {
 149     FrmCloseAllForms();
 150
 151     EventType AppStop;
 152     AppStop.eType=appStopEvent;
 153     EvtAddEventToQueue(&AppStop);
 154 }
 155
 156 // ----------------------------------------------------------------------------
 157 // wxEventLoop message processing dispatching
 158 // ----------------------------------------------------------------------------
 159
 160 bool wxEventLoop::Pending() const
 161 {
 162     return false;
 163 }
 164
 165 bool wxEventLoop::Dispatch()
 166 {
 167     return false;
 168 }
 169