src/palmos/msgdlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/palmos/msgdlg.cpp
   3 // Purpose:     wxMessageDialog
   4 // Author:      William Osborne - minimal working wxPalmOS port
   5 // Modified by:
   6 // Created:     10/13/04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) William Osborne
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "msgdlg.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/app.h"
  25     #include "wx/defs.h"
  26     #include "wx/utils.h"
  27     #include "wx/dialog.h"
  28     #include "wx/msgdlg.h"
  29 #endif
  30
  31 #include <Loader.h>
  32 #include <Form.h>
  33
  34 IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  35
  36 wxMessageDialog::wxMessageDialog(wxWindow *parent,
  37                                  const wxString& message,
  38                                  const wxString& caption,
  39                                  long style,
  40                                  const wxPoint& WXUNUSED(pos))
  41 {
  42     m_caption = caption;
  43     m_message = message;
  44     m_parent = parent;
  45     SetMessageDialogStyle(style);
  46 }
  47
  48 int wxMessageDialog::ShowModal()
  49 {
  50     int AlertID=1000;
  51     int Result=0;
  52     int wxResult=wxID_OK;
  53     const long style = GetMessageDialogStyle();
  54
  55     // Handle to the currently running application database
  56     DmOpenRef    AppDB;
  57     SysGetModuleDatabase(SysGetRefNum(), NULL, &AppDB);
  58
  59     // Translate wx styles into Palm OS styles
  60     if (style & wxYES_NO)
  61     {
  62         if (style & wxCANCEL)
  63             AlertID=1300; // Yes No Cancel
  64         else
  65             AlertID=1200; // Yes No
  66     }
  67     if (style & wxOK)
  68     {
  69         if (style & wxCANCEL)
  70             AlertID=1100; // Ok Cancel
  71         else
  72             AlertID=1000; // Ok
  73     }
  74
  75     // Add the icon styles
  76     if (style & wxICON_EXCLAMATION)
  77         AlertID=AlertID+0; // Warning
  78     else if (style & wxICON_HAND)
  79         AlertID=AlertID+1; // Error
  80     else if (style & wxICON_INFORMATION)
  81         AlertID=AlertID+2; // Information
  82     else if (style & wxICON_QUESTION)
  83         AlertID=AlertID+3; // Confirmation
  84
  85     // The Palm OS Dialog API does not support custom titles in a dialog box.
  86     // So we have to set the title by manipulating the resource.
  87
  88     // Get the alert resource
  89     char *AlertPtr;
  90     MemHandle AlertHandle;
  91     AlertHandle=DmGetResource(AppDB,'Talt',AlertID);
  92
  93     AlertPtr=(char *)MemHandleLock(AlertHandle);
  94     AlertPtr+=8;
  95
  96     // Clear out any old title.  This must be done with a static array of chars
  97     // because using MemSet is not supported on resources and could result in
  98     // crashes or unpredictable behaviour.
  99     char ClearTitle[25]={' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
 100     MemMove(AlertPtr,&ClearTitle,25);
 101
 102     // Get the title length and make sure it is not too long
 103     int TitleLength=m_caption.length();
 104     if(TitleLength>25)
 105         TitleLength=25;
 106
 107     // Center the title in the window
 108     int BufferLength=(25-TitleLength)/2;
 109     AlertPtr+=BufferLength;
 110
 111     // Copy the title
 112     MemMove(AlertPtr,m_caption.c_str(),TitleLength);
 113
 114     // Release the resource
 115     MemHandleUnlock(AlertHandle);
 116     DmReleaseResource(AlertHandle);
 117
 118     // Display the dialog
 119     Result=FrmCustomAlert(AppDB,AlertID,m_message.c_str(),"","");
 120
 121     // Convert the Palm OS result to wxResult
 122     if(AlertID<1100)
 123     {
 124         // Ok
 125         wxResult=wxID_OK;
 126     }
 127     else if(AlertID<1200)
 128     {
 129         // Ok Cancel
 130         if(Result==0)
 131             wxResult=wxID_OK;
 132         else
 133             wxResult=wxID_CANCEL;
 134     }
 135     else if(AlertID<1300)
 136     {
 137         // Yes No
 138         if(Result==0)
 139             wxResult=wxID_YES;
 140         else
 141             wxResult=wxID_NO;
 142     }
 143     else
 144     {
 145         // Yes No Cancel
 146         if(Result==0)
 147             wxResult=wxID_YES;
 148         else if(Result==1)
 149             wxResult=wxID_NO;
 150         else
 151             wxResult=wxID_CANCEL;
 152     }
 153
 154     return wxResult;
 155 }
 156