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