include/wx/msw/textctrl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/textctrl.h
   3 // Purpose:     wxTextCtrl class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_TEXTCTRL_H_
  13 #define _WX_TEXTCTRL_H_
  14
  15 #ifdef __GNUG__
  16     #pragma interface "textctrl.h"
  17 #endif
  18
  19 class WXDLLEXPORT wxTextCtrl : public wxTextCtrlBase
  20 {
  21 public:
  22     // creation
  23     // --------
  24
  25     wxTextCtrl() { Init(); }
  26     wxTextCtrl(wxWindow *parent, wxWindowID id,
  27                const wxString& value = wxEmptyString,
  28                const wxPoint& pos = wxDefaultPosition,
  29                const wxSize& size = wxDefaultSize,
  30                long style = 0,
  31                const wxValidator& validator = wxDefaultValidator,
  32                const wxString& name = wxTextCtrlNameStr)
  33     {
  34         Init();
  35
  36         Create(parent, id, value, pos, size, style, validator, name);
  37     }
  38     ~wxTextCtrl();
  39
  40     bool Create(wxWindow *parent, wxWindowID id,
  41                 const wxString& value = wxEmptyString,
  42                 const wxPoint& pos = wxDefaultPosition,
  43                 const wxSize& size = wxDefaultSize,
  44                 long style = 0,
  45                 const wxValidator& validator = wxDefaultValidator,
  46                 const wxString& name = wxTextCtrlNameStr);
  47
  48     // implement base class pure virtuals
  49     // ----------------------------------
  50
  51     virtual wxString GetValue() const;
  52     virtual void SetValue(const wxString& value);
  53
  54     virtual wxString GetRange(long from, long to) const;
  55
  56     virtual int GetLineLength(long lineNo) const;
  57     virtual wxString GetLineText(long lineNo) const;
  58     virtual int GetNumberOfLines() const;
  59
  60     virtual bool IsModified() const;
  61     virtual bool IsEditable() const;
  62
  63     virtual void GetSelection(long* from, long* to) const;
  64
  65     // operations
  66     // ----------
  67
  68     // editing
  69     virtual void Clear();
  70     virtual void Replace(long from, long to, const wxString& value);
  71     virtual void Remove(long from, long to);
  72
  73     // load the controls contents from the file
  74     virtual bool LoadFile(const wxString& file);
  75
  76     // clears the dirty flag
  77     virtual void DiscardEdits();
  78
  79     virtual void SetMaxLength(unsigned long len);
  80
  81     // writing text inserts it at the current position, appending always
  82     // inserts it at the end
  83     virtual void WriteText(const wxString& text);
  84     virtual void AppendText(const wxString& text);
  85
  86 #ifdef __WIN32__
  87     virtual bool EmulateKeyPress(const wxKeyEvent& event);
  88 #endif // __WIN32__
  89
  90 #if wxUSE_RICHEDIT
  91     // apply text attribute to the range of text (only works with richedit
  92     // controls)
  93     virtual bool SetStyle(long start, long end, const wxTextAttr& style);
  94     virtual bool SetDefaultStyle(const wxTextAttr& style);
  95     virtual bool GetStyle(long position, wxTextAttr& style);
  96 #endif // wxUSE_RICHEDIT
  97
  98     // translate between the position (which is just an index in the text ctrl
  99     // considering all its contents as a single strings) and (x, y) coordinates
 100     // which represent column and line.
 101     virtual long XYToPosition(long x, long y) const;
 102     virtual bool PositionToXY(long pos, long *x, long *y) const;
 103
 104     virtual void ShowPosition(long pos);
 105
 106     // Clipboard operations
 107     virtual void Copy();
 108     virtual void Cut();
 109     virtual void Paste();
 110
 111     virtual bool CanCopy() const;
 112     virtual bool CanCut() const;
 113     virtual bool CanPaste() const;
 114
 115     // Undo/redo
 116     virtual void Undo();
 117     virtual void Redo();
 118
 119     virtual bool CanUndo() const;
 120     virtual bool CanRedo() const;
 121
 122     // Insertion point
 123     virtual void SetInsertionPoint(long pos);
 124     virtual void SetInsertionPointEnd();
 125     virtual long GetInsertionPoint() const;
 126     virtual long GetLastPosition() const;
 127
 128     virtual void SetSelection(long from, long to);
 129     virtual void SetEditable(bool editable);
 130
 131     // Implementation from now on
 132     // --------------------------
 133
 134     virtual void SetWindowStyleFlag(long style);
 135
 136     virtual void Command(wxCommandEvent& event);
 137     virtual bool MSWCommand(WXUINT param, WXWORD id);
 138     virtual WXHBRUSH OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 139             WXUINT message, WXWPARAM wParam, WXLPARAM lParam);
 140
 141     // In WIN16, need to override normal erasing because
 142     // Ctl3D doesn't use the wxWindows background colour.
 143 #ifdef __WIN16__
 144     void OnEraseBackground(wxEraseEvent& event);
 145 #endif
 146
 147 #if wxUSE_RICHEDIT
 148     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 149
 150     int GetRichVersion() const { return m_verRichEdit; }
 151     bool IsRich() const { return m_verRichEdit != 0; }
 152
 153     // rich edit controls are not compatible with normal ones and wem ust set
 154     // the colours for them otherwise
 155     virtual bool SetBackgroundColour(const wxColour& colour);
 156     virtual bool SetForegroundColour(const wxColour& colour);
 157 #endif // wxUSE_RICHEDIT
 158
 159     virtual void AdoptAttributesFromHWND();
 160
 161     virtual bool AcceptsFocus() const;
 162
 163     // callbacks
 164     void OnDropFiles(wxDropFilesEvent& event);
 165     void OnChar(wxKeyEvent& event); // Process 'enter' if required
 166
 167     void OnCut(wxCommandEvent& event);
 168     void OnCopy(wxCommandEvent& event);
 169     void OnPaste(wxCommandEvent& event);
 170     void OnUndo(wxCommandEvent& event);
 171     void OnRedo(wxCommandEvent& event);
 172     void OnDelete(wxCommandEvent& event);
 173     void OnSelectAll(wxCommandEvent& event);
 174
 175     void OnUpdateCut(wxUpdateUIEvent& event);
 176     void OnUpdateCopy(wxUpdateUIEvent& event);
 177     void OnUpdatePaste(wxUpdateUIEvent& event);
 178     void OnUpdateUndo(wxUpdateUIEvent& event);
 179     void OnUpdateRedo(wxUpdateUIEvent& event);
 180     void OnUpdateDelete(wxUpdateUIEvent& event);
 181     void OnUpdateSelectAll(wxUpdateUIEvent& event);
 182
 183     // Show a context menu for Rich Edit controls (the standard
 184     // EDIT control has one already)
 185     void OnRightClick(wxMouseEvent& event);
 186
 187 protected:
 188     // common part of all ctors
 189     void Init();
 190
 191     // intercept WM_GETDLGCODE
 192     virtual long MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 193
 194     // call this to increase the size limit (will do nothing if the current
 195     // limit is big enough)
 196     //
 197     // returns true if we increased the limit to allow entering more text,
 198     // false if we hit the limit set by SetMaxLength() and so didn't change it
 199     bool AdjustSpaceLimit();
 200
 201 #if wxUSE_RICHEDIT
 202     // replace the selection or the entire control contents with the given text
 203     // in the specified encoding
 204     bool StreamIn(const wxString& value,
 205                   wxFontEncoding encoding,
 206                   bool selOnly);
 207 #endif // wxUSE_RICHEDIT
 208
 209     // replace the contents of the selection or of the entire control with the
 210     // given text
 211     void DoWriteText(const wxString& text, bool selectionOnly = TRUE);
 212
 213     // set the selection possibly without scrolling the caret into view
 214     void DoSetSelection(long from, long to, bool scrollCaret = TRUE);
 215
 216     // return true if there is a non empty selection in the control
 217     bool HasSelection() const;
 218
 219     // get the length of the line containing the character at the given
 220     // position
 221     long GetLengthOfLineContainingPos(long pos) const;
 222
 223     // send TEXT_UPDATED event, return TRUE if it was handled, FALSE otherwise
 224     bool SendUpdateEvent();
 225
 226     // override some base class virtuals
 227     virtual bool MSWShouldPreProcessMessage(WXMSG* pMsg);
 228     virtual wxSize DoGetBestSize() const;
 229
 230     virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
 231
 232 #if wxUSE_RICHEDIT
 233     // we're using RICHEDIT (and not simple EDIT) control if this field is not
 234     // 0, it also gives the version of the RICHEDIT control being used (1, 2 or
 235     // 3 so far)
 236     int m_verRichEdit;
 237 #endif // wxUSE_RICHEDIT
 238
 239     // if TRUE, SendUpdateEvent() will eat the next event (see comments in the
 240     // code as to why this is needed)
 241     bool m_suppressNextUpdate;
 242
 243 private:
 244     DECLARE_EVENT_TABLE()
 245     DECLARE_DYNAMIC_CLASS(wxTextCtrl)
 246
 247     wxMenu* m_privateContextMenu;
 248 };
 249
 250 #endif
 251     // _WX_TEXTCTRL_H_