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 // style functions - not implemented here
  74 // ----------------------------------------------------------------------------
  75
  76 // apply styling to text range
  77 bool wxTextCtrlBase::SetStyle(long WXUNUSED(start), long WXUNUSED(end),
  78                               const wxTextAttr& WXUNUSED(style))
  79 {
  80     // to be implemented in derived TextCtrl classes
  81     return FALSE;
  82 }
  83
  84 // change default text attributes
  85 bool wxTextCtrlBase::SetDefaultStyle(const wxTextAttr &style)
  86 {
  87     m_defaultStyle = style;
  88     return TRUE;
  89 }
  90
  91 // get default text attributes
  92 const wxTextAttr& wxTextCtrlBase::GetDefaultStyle() const
  93 {
  94     return m_defaultStyle;
  95 }
  96
  97 // ----------------------------------------------------------------------------
  98 // file IO functions
  99 // ----------------------------------------------------------------------------
 100
 101 bool wxTextCtrlBase::LoadFile(const wxString& filename)
 102 {
 103     wxFFile file(filename);
 104     if ( file.IsOpened() )
 105     {
 106         wxString text;
 107         if ( file.ReadAll(&text) )
 108         {
 109             SetValue(text);
 110
 111             DiscardEdits();
 112
 113             m_filename = filename;
 114
 115             return TRUE;
 116         }
 117     }
 118
 119     wxLogError(_("File couldn't be loaded."));
 120
 121     return FALSE;
 122 }
 123
 124 bool wxTextCtrlBase::SaveFile(const wxString& filename)
 125 {
 126     wxString filenameToUse = filename.IsEmpty() ? m_filename : filename;
 127     if ( !filenameToUse )
 128     {
 129         // what kind of message to give? is it an error or a program bug?
 130         wxLogDebug(wxT("Can't save textctrl to file without filename."));
 131
 132         return FALSE;
 133     }
 134
 135     wxFFile file(filename, "w");
 136     if ( file.IsOpened() && file.Write(GetValue()) )
 137     {
 138         // it's not modified any longer
 139         DiscardEdits();
 140
 141         m_filename = filename;
 142
 143         return TRUE;
 144     }
 145
 146     wxLogError(_("The text couldn't be saved."));
 147
 148     return FALSE;
 149 }
 150
 151 // ----------------------------------------------------------------------------
 152 // stream-like insertion operator
 153 // ----------------------------------------------------------------------------
 154
 155 wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s)
 156 {
 157     AppendText(s);
 158     return *TEXTCTRL(this);
 159 }
 160
 161 wxTextCtrl& wxTextCtrlBase::operator<<(float f)
 162 {
 163     wxString str;
 164     str.Printf(wxT("%.2f"), f);
 165     AppendText(str);
 166     return *TEXTCTRL(this);
 167 }
 168
 169 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 170 {
 171     wxString str;
 172     str.Printf(wxT("%.2f"), d);
 173     AppendText(str);
 174     return *TEXTCTRL(this);
 175 }
 176
 177 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 178 {
 179     wxString str;
 180     str.Printf(wxT("%d"), i);
 181     AppendText(str);
 182     return *TEXTCTRL(this);
 183 }
 184
 185 wxTextCtrl& wxTextCtrlBase::operator<<(long i)
 186 {
 187     wxString str;
 188     str.Printf(wxT("%ld"), i);
 189     AppendText(str);
 190     return *TEXTCTRL(this);
 191 }
 192
 193 wxTextCtrl& wxTextCtrlBase::operator<<(const wxChar c)
 194 {
 195     return operator<<(wxString(c));
 196 }
 197
 198 // ----------------------------------------------------------------------------
 199 // streambuf methods implementation
 200 // ----------------------------------------------------------------------------
 201
 202 #ifndef NO_TEXT_WINDOW_STREAM
 203
 204 int wxTextCtrlBase::overflow( int WXUNUSED(c) )
 205 {
 206     int len = pptr() - pbase();
 207     char *txt = new char[len+1];
 208     strncpy(txt, pbase(), len);
 209     txt[len] = '\0';
 210     (*this) << txt;
 211     setp(pbase(), epptr());
 212     delete[] txt;
 213     return EOF;
 214 }
 215
 216 int wxTextCtrlBase::sync()
 217 {
 218     int len = pptr() - pbase();
 219     char *txt = new char[len+1];
 220     strncpy(txt, pbase(), len);
 221     txt[len] = '\0';
 222     (*this) << txt;
 223     setp(pbase(), epptr());
 224     delete[] txt;
 225     return 0;
 226 }
 227
 228 int wxTextCtrlBase::underflow()
 229 {
 230     return EOF;
 231 }
 232
 233 #endif // NO_TEXT_WINDOW_STREAM
 234