include/wx/textctrl.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.h
   3 // Purpose:     wxTextCtrlBase class - the interface of wxTextCtrl
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13.07.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows team
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_TEXTCTRL_H_BASE_
  13 #define _WX_TEXTCTRL_H_BASE_
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18 #ifdef __GNUG__
  19     #pragma interface "textctrlbase.h"
  20 #endif
  21
  22 #include "wx/defs.h"
  23 #include "wx/control.h"         // the base class
  24
  25 // 16-bit Borland 4.0 doesn't seem to allow multiple inheritance with wxWindow
  26 // and streambuf: it complains about deriving a huge class from the huge class
  27 // streambuf. !! Also, can't use streambuf if making or using a DLL :-(
  28
  29 #if (defined(__BORLANDC__)) || defined(__MWERKS__) || defined(_WINDLL) || defined(WXUSINGDLL) || defined(WXMAKINGDLL)
  30     #define NO_TEXT_WINDOW_STREAM
  31 #endif
  32
  33 #ifndef NO_TEXT_WINDOW_STREAM
  34     #if wxUSE_STD_IOSTREAM
  35         #include "wx/ioswrap.h"    // for iostream classes if we need them
  36     #else // !wxUSE_STD_IOSTREAM
  37         // can't compile this feature in if we don't use streams at all
  38         #define NO_TEXT_WINDOW_STREAM
  39     #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
  40 #endif
  41
  42 class WXDLLEXPORT wxTextCtrl;
  43
  44 // ----------------------------------------------------------------------------
  45 // constants
  46 // ----------------------------------------------------------------------------
  47
  48 WXDLLEXPORT_DATA(extern const wxChar*) wxTextCtrlNameStr;
  49 WXDLLEXPORT_DATA(extern const wxChar*) wxEmptyString;
  50
  51 // ----------------------------------------------------------------------------
  52 // wxTextCtrl: a single or multiple line text zone where user can enter and
  53 // edit text
  54 // ----------------------------------------------------------------------------
  55
  56 class WXDLLEXPORT wxTextCtrlBase : public wxControl
  57 #ifndef NO_TEXT_WINDOW_STREAM
  58                                  , public streambuf
  59 #endif
  60
  61 {
  62 public:
  63     // creation
  64     // --------
  65
  66     wxTextCtrlBase();
  67
  68     // accessors
  69     // ---------
  70
  71     virtual wxString GetValue() const = 0;
  72     virtual void SetValue(const wxString& value) = 0;
  73
  74     virtual int GetLineLength(long lineNo) const = 0;
  75     virtual wxString GetLineText(long lineNo) const = 0;
  76     virtual int GetNumberOfLines() const = 0;
  77
  78     virtual bool IsModified() const = 0;
  79     virtual bool IsEditable() const = 0;
  80
  81     // If the return values from and to are the same, there is no selection.
  82     virtual void GetSelection(long* from, long* to) const = 0;
  83
  84     // operations
  85     // ----------
  86
  87     // editing
  88     virtual void Clear() = 0;
  89     virtual void Replace(long from, long to, const wxString& value) = 0;
  90     virtual void Remove(long from, long to) = 0;
  91
  92     // load/save the controls contents from/to the file
  93     virtual bool LoadFile(const wxString& file);
  94     virtual bool SaveFile(const wxString& file = wxEmptyString);
  95
  96     // clears the dirty flag
  97     virtual void DiscardEdits() = 0;
  98
  99     // writing text inserts it at the current position, appending always
 100     // inserts it at the end
 101     virtual void WriteText(const wxString& text) = 0;
 102     virtual void AppendText(const wxString& text) = 0;
 103
 104     // translate between the position (which is just an index in the text ctrl
 105     // considering all its contents as a single strings) and (x, y) coordinates
 106     // which represent column and line.
 107     virtual long XYToPosition(long x, long y) const = 0;
 108     virtual bool PositionToXY(long pos, long *x, long *y) const = 0;
 109
 110     virtual void ShowPosition(long pos) = 0;
 111
 112     // Clipboard operations
 113     virtual void Copy() = 0;
 114     virtual void Cut() = 0;
 115     virtual void Paste() = 0;
 116
 117     virtual bool CanCopy() const = 0;
 118     virtual bool CanCut() const = 0;
 119     virtual bool CanPaste() const = 0;
 120
 121     // Undo/redo
 122     virtual void Undo() = 0;
 123     virtual void Redo() = 0;
 124
 125     virtual bool CanUndo() const = 0;
 126     virtual bool CanRedo() const = 0;
 127
 128     // Insertion point
 129     virtual void SetInsertionPoint(long pos) = 0;
 130     virtual void SetInsertionPointEnd() = 0;
 131     virtual long GetInsertionPoint() const = 0;
 132     virtual long GetLastPosition() const = 0;
 133
 134     virtual void SetSelection(long from, long to) = 0;
 135     virtual void SetEditable(bool editable) = 0;
 136
 137     // streambuf methods
 138 #ifndef NO_TEXT_WINDOW_STREAM
 139     int overflow(int i);
 140     int sync();
 141     int underflow();
 142 #endif // NO_TEXT_WINDOW_STREAM
 143
 144     // stream-like insertion operators: these are always available, whether we
 145     // were, or not, compiled with streambuf support
 146     wxTextCtrl& operator<<(const wxString& s);
 147     wxTextCtrl& operator<<(int i);
 148     wxTextCtrl& operator<<(long i);
 149     wxTextCtrl& operator<<(float f);
 150     wxTextCtrl& operator<<(double d);
 151     wxTextCtrl& operator<<(const wxChar c);
 152
 153     // obsolete functions
 154 #if WXWIN_COMPATIBILITY
 155     bool Modified() const { return IsModified(); }
 156 #endif
 157
 158 private:
 159     // the name of the last file loaded with LoadFile() which will be used by
 160     // SaveFile() by default
 161     wxString m_filename;
 162 };
 163
 164 // ----------------------------------------------------------------------------
 165 // include the platform-dependent class definition
 166 // ----------------------------------------------------------------------------
 167
 168 #if defined(__WXMSW__)
 169     #include "wx/msw/textctrl.h"
 170 #elif defined(__WXMOTIF__)
 171     #include "wx/motif/textctrl.h"
 172 #elif defined(__WXGTK__)
 173     #include "wx/gtk/textctrl.h"
 174 #elif defined(__WXQT__)
 175     #include "wx/qt/textctrl.h"
 176 #elif defined(__WXMAC__)
 177     #include "wx/mac/textctrl.h"
 178 #elif defined(__WXPM__)
 179     #include "wx/os2/textctrl.h"
 180 #elif defined(__WXSTUBS__)
 181     #include "wx/stubs/textctrl.h"
 182 #endif
 183
 184 #endif
 185     // _WX_TEXTCTRL_H_BASE_