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 #ifdef __GNUG__
  16     #pragma implementation "textctrlbase.h"
  17 #endif
  18
  19 // for compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/intl.h"
  28     #include "wx/log.h"
  29     #include "wx/textctrl.h"
  30 #endif // WX_PRECOMP
  31
  32 #include "wx/ffile.h"
  33
  34 // ----------------------------------------------------------------------------
  35 // macros
  36 // ----------------------------------------------------------------------------
  37
  38 // we don't have any objects of type wxTextCtrlBase in the program, only
  39 // wxTextCtrl, so this cast is safe
  40 #define TEXTCTRL(ptr)   ((wxTextCtrl *)(ptr))
  41
  42 // ============================================================================
  43 // implementation
  44 // ============================================================================
  45
  46 // ----------------------------------------------------------------------------
  47 // ctor
  48 // ----------------------------------------------------------------------------
  49
  50 wxTextCtrlBase::wxTextCtrlBase()
  51 {
  52 #ifndef NO_TEXT_WINDOW_STREAM
  53     if (allocate())
  54         setp(base(),ebuf());
  55 #endif // NO_TEXT_WINDOW_STREAM
  56 }
  57
  58 // ----------------------------------------------------------------------------
  59 // file IO functions
  60 // ----------------------------------------------------------------------------
  61
  62 bool wxTextCtrlBase::LoadFile(const wxString& filename)
  63 {
  64     wxFFile file(filename);
  65     if ( file.IsOpened() )
  66     {
  67         wxString text;
  68         if ( file.ReadAll(&text) )
  69         {
  70             SetValue(text);
  71
  72             DiscardEdits();
  73
  74             m_filename = filename;
  75
  76             return TRUE;
  77         }
  78     }
  79
  80     wxLogError(_("File couldn't be loaded."));
  81
  82     return FALSE;
  83 }
  84
  85 bool wxTextCtrlBase::SaveFile(const wxString& filename)
  86 {
  87     wxString filenameToUse = filename.IsEmpty() ? m_filename : filename;
  88     if ( !filenameToUse )
  89     {
  90         // what kind of message to give? is it an error or a program bug?
  91         wxLogDebug(_T("Can't save textctrl to file without filename."));
  92
  93         return FALSE;
  94     }
  95
  96     wxFFile file(filename, "w");
  97     if ( file.IsOpened() && file.Write(GetValue()) )
  98     {
  99         // it's not modified any longer
 100         DiscardEdits();
 101
 102         m_filename = filename;
 103
 104         return TRUE;
 105     }
 106
 107     wxLogError(_("The text couldn't be saved."));
 108
 109     return FALSE;
 110 }
 111
 112 // ----------------------------------------------------------------------------
 113 // stream-like insertion operator
 114 // ----------------------------------------------------------------------------
 115
 116 wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s)
 117 {
 118     AppendText(s);
 119     return *TEXTCTRL(this);
 120 }
 121
 122 wxTextCtrl& wxTextCtrlBase::operator<<(float f)
 123 {
 124     wxString str;
 125     str.Printf(_T("%.2f"), f);
 126     AppendText(str);
 127     return *TEXTCTRL(this);
 128 }
 129
 130 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 131 {
 132     wxString str;
 133     str.Printf(_T("%.2f"), d);
 134     AppendText(str);
 135     return *TEXTCTRL(this);
 136 }
 137
 138 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 139 {
 140     wxString str;
 141     str.Printf(_T("%d"), i);
 142     AppendText(str);
 143     return *TEXTCTRL(this);
 144 }
 145
 146 wxTextCtrl& wxTextCtrlBase::operator<<(long i)
 147 {
 148     wxString str;
 149     str.Printf(_T("%ld"), i);
 150     AppendText(str);
 151     return *TEXTCTRL(this);
 152 }
 153
 154 wxTextCtrl& wxTextCtrlBase::operator<<(const wxChar c)
 155 {
 156     return operator<<(wxString(c));
 157 }
 158
 159 // ----------------------------------------------------------------------------
 160 // streambuf methods implementation
 161 // ----------------------------------------------------------------------------
 162
 163 #ifndef NO_TEXT_WINDOW_STREAM
 164
 165 int wxTextCtrlBase::overflow( int WXUNUSED(c) )
 166 {
 167     int len = pptr() - pbase();
 168     char *txt = new char[len+1];
 169     strncpy(txt, pbase(), len);
 170     txt[len] = '\0';
 171     (*this) << txt;
 172     setp(pbase(), epptr());
 173     delete[] txt;
 174     return EOF;
 175 }
 176
 177 int wxTextCtrlBase::sync()
 178 {
 179     int len = pptr() - pbase();
 180     char *txt = new char[len+1];
 181     strncpy(txt, pbase(), len);
 182     txt[len] = '\0';
 183     (*this) << txt;
 184     setp(pbase(), epptr());
 185     delete[] txt;
 186     return 0;
 187 }
 188
 189 int wxTextCtrlBase::underflow()
 190 {
 191     return EOF;
 192 }
 193
 194 #endif // NO_TEXT_WINDOW_STREAM
 195