src/common/textcmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/textcmn.cpp
   3 // Purpose:     implementation of platform-independent functions of wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     13.07.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows team
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  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/textctrl.h"
  25 #endif // WX_PRECOMP
  26
  27 #include "wx/ffile.h"
  28
  29 // ----------------------------------------------------------------------------
  30 // macros
  31 // ----------------------------------------------------------------------------
  32
  33 // we don't have any objects of type wxTextCtrlBase in the program, only
  34 // wxTextCtrl, so this cast is safe
  35 #define TEXTCTRL(ptr)   ((wxTextCtrl *)(ptr))
  36
  37 // ============================================================================
  38 // implementation
  39 // ============================================================================
  40
  41 // ----------------------------------------------------------------------------
  42 // ctor
  43 // ----------------------------------------------------------------------------
  44
  45 wxTextCtrlBase::wxTextCtrlBase()
  46 {
  47 }
  48
  49 // ----------------------------------------------------------------------------
  50 // file IO functions
  51 // ----------------------------------------------------------------------------
  52
  53 bool wxTextCtrlBase::LoadFile(const wxString& filename)
  54 {
  55     wxFFile file(filename);
  56     if ( file.IsOpened() )
  57     {
  58         wxString text;
  59         if ( file.ReadAll(&text) )
  60         {
  61             SetValue(text);
  62
  63             DiscardEdits();
  64
  65             m_filename = filename;
  66
  67             return TRUE;
  68         }
  69     }
  70
  71     wxLogError(_("File couldn't be loaded."));
  72
  73     return FALSE;
  74 }
  75
  76 bool wxTextCtrlBase::SaveFile(const wxString& filename)
  77 {
  78     wxString filenameToUse = filename.IsEmpty() ? m_filename : filename;
  79     if ( !filenameToUse )
  80     {
  81         // what kind of message to give? is it an error or a program bug?
  82         wxLogDebug(_T("Can't save textctrl to file without filename."));
  83
  84         return FALSE;
  85     }
  86
  87     wxFFile file(filename, "w");
  88     if ( file.IsOpened() && file.Write(GetValue()) )
  89     {
  90         // it's not modified any longer
  91         DiscardEdits();
  92
  93         m_filename = filename;
  94
  95         return TRUE;
  96     }
  97
  98     wxLogError(_("The text couldn't be saved."));
  99
 100     return FALSE;
 101 }
 102
 103 // ----------------------------------------------------------------------------
 104 // stream-like insertion operator
 105 // ----------------------------------------------------------------------------
 106
 107 wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s)
 108 {
 109     AppendText(s);
 110     return *TEXTCTRL(this);
 111 }
 112
 113 wxTextCtrl& wxTextCtrlBase::operator<<(float f)
 114 {
 115     wxString str;
 116     str.Printf(_T("%.2f"), f);
 117     AppendText(str);
 118     return *TEXTCTRL(this);
 119 }
 120
 121 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 122 {
 123     wxString str;
 124     str.Printf(_T("%.2f"), d);
 125     AppendText(str);
 126     return *TEXTCTRL(this);
 127 }
 128
 129 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 130 {
 131     wxString str;
 132     str.Printf(_T("%d"), i);
 133     AppendText(str);
 134     return *TEXTCTRL(this);
 135 }
 136
 137 wxTextCtrl& wxTextCtrlBase::operator<<(long i)
 138 {
 139     wxString str;
 140     str.Printf(_T("%ld"), i);
 141     AppendText(str);
 142     return *TEXTCTRL(this);
 143 }
 144
 145 wxTextCtrl& wxTextCtrlBase::operator<<(const char c)
 146 {
 147     return operator<<(wxString(c));
 148 }
 149
 150 // ----------------------------------------------------------------------------
 151 // streambuf methods implementation
 152 // ----------------------------------------------------------------------------
 153
 154 #ifndef NO_TEXT_WINDOW_STREAM
 155
 156 int wxTextCtrlBase::overflow( int WXUNUSED(c) )
 157 {
 158     int len = pptr() - pbase();
 159     char *txt = new char[len+1];
 160     strncpy(txt, pbase(), len);
 161     txt[len] = '\0';
 162     (*this) << txt;
 163     setp(pbase(), epptr());
 164     delete[] txt;
 165     return EOF;
 166 }
 167
 168 int wxTextCtrlBase::sync()
 169 {
 170     int len = pptr() - pbase();
 171     char *txt = new char[len+1];
 172     strncpy(txt, pbase(), len);
 173     txt[len] = '\0';
 174     (*this) << txt;
 175     setp(pbase(), epptr());
 176     delete[] txt;
 177     return 0;
 178 }
 179
 180 int wxTextCtrlBase::underflow()
 181 {
 182     return EOF;
 183 }
 184
 185 #endif // NO_TEXT_WINDOW_STREAM
 186