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