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 wxUSE_IOSTREAMH
  54   if (allocate())
  55     setp(base(),ebuf());
  56   #else
  57   m_streambuf=new char[64];
  58   setp(m_streambuf,m_streambuf+64);
  59   #endif //wxUSE_IOSTREAMH
  60 #endif // NO_TEXT_WINDOW_STREAM
  61 }
  62
  63 wxTextCtrlBase::~wxTextCtrlBase()
  64 {
  65 #ifndef NO_TEXT_WINDOW_STREAM
  66 #if !wxUSE_IOSTREAMH
  67   delete m_streambuf;
  68 #endif
  69 #endif
  70 }
  71
  72 // ----------------------------------------------------------------------------
  73 // file IO functions
  74 // ----------------------------------------------------------------------------
  75
  76 bool wxTextCtrlBase::LoadFile(const wxString& filename)
  77 {
  78     wxFFile file(filename);
  79     if ( file.IsOpened() )
  80     {
  81         wxString text;
  82         if ( file.ReadAll(&text) )
  83         {
  84             SetValue(text);
  85
  86             DiscardEdits();
  87
  88             m_filename = filename;
  89
  90             return TRUE;
  91         }
  92     }
  93
  94     wxLogError(_("File couldn't be loaded."));
  95
  96     return FALSE;
  97 }
  98
  99 bool wxTextCtrlBase::SaveFile(const wxString& filename)
 100 {
 101     wxString filenameToUse = filename.IsEmpty() ? m_filename : filename;
 102     if ( !filenameToUse )
 103     {
 104         // what kind of message to give? is it an error or a program bug?
 105         wxLogDebug(wxT("Can't save textctrl to file without filename."));
 106
 107         return FALSE;
 108     }
 109
 110     wxFFile file(filename, "w");
 111     if ( file.IsOpened() && file.Write(GetValue()) )
 112     {
 113         // it's not modified any longer
 114         DiscardEdits();
 115
 116         m_filename = filename;
 117
 118         return TRUE;
 119     }
 120
 121     wxLogError(_("The text couldn't be saved."));
 122
 123     return FALSE;
 124 }
 125
 126 // ----------------------------------------------------------------------------
 127 // stream-like insertion operator
 128 // ----------------------------------------------------------------------------
 129
 130 wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s)
 131 {
 132     AppendText(s);
 133     return *TEXTCTRL(this);
 134 }
 135
 136 wxTextCtrl& wxTextCtrlBase::operator<<(float f)
 137 {
 138     wxString str;
 139     str.Printf(wxT("%.2f"), f);
 140     AppendText(str);
 141     return *TEXTCTRL(this);
 142 }
 143
 144 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 145 {
 146     wxString str;
 147     str.Printf(wxT("%.2f"), d);
 148     AppendText(str);
 149     return *TEXTCTRL(this);
 150 }
 151
 152 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 153 {
 154     wxString str;
 155     str.Printf(wxT("%d"), i);
 156     AppendText(str);
 157     return *TEXTCTRL(this);
 158 }
 159
 160 wxTextCtrl& wxTextCtrlBase::operator<<(long i)
 161 {
 162     wxString str;
 163     str.Printf(wxT("%ld"), i);
 164     AppendText(str);
 165     return *TEXTCTRL(this);
 166 }
 167
 168 wxTextCtrl& wxTextCtrlBase::operator<<(const wxChar c)
 169 {
 170     return operator<<(wxString(c));
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // streambuf methods implementation
 175 // ----------------------------------------------------------------------------
 176
 177 #ifndef NO_TEXT_WINDOW_STREAM
 178
 179 int wxTextCtrlBase::overflow( int WXUNUSED(c) )
 180 {
 181     int len = pptr() - pbase();
 182     char *txt = new char[len+1];
 183     strncpy(txt, pbase(), len);
 184     txt[len] = '\0';
 185     (*this) << txt;
 186     setp(pbase(), epptr());
 187     delete[] txt;
 188     return EOF;
 189 }
 190
 191 int wxTextCtrlBase::sync()
 192 {
 193     int len = pptr() - pbase();
 194     char *txt = new char[len+1];
 195     strncpy(txt, pbase(), len);
 196     txt[len] = '\0';
 197     (*this) << txt;
 198     setp(pbase(), epptr());
 199     delete[] txt;
 200     return 0;
 201 }
 202
 203 int wxTextCtrlBase::underflow()
 204 {
 205     return EOF;
 206 }
 207
 208 #endif // NO_TEXT_WINDOW_STREAM
 209