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 class WXDLLEXPORT wxTextCtrl : public wxTextCtrlBase
  16 {
  17 public:
  18     // creation
  19     // --------
  20
  21     wxTextCtrl() { Init(); }
  22     wxTextCtrl(wxWindow *parent, wxWindowID id,
  23                const wxString& value = wxEmptyString,
  24                const wxPoint& pos = wxDefaultPosition,
  25                const wxSize& size = wxDefaultSize,
  26                long style = 0,
  27                const wxValidator& validator = wxDefaultValidator,
  28                const wxString& name = wxTextCtrlNameStr)
  29     {
  30         Init();
  31
  32         Create(parent, id, value, pos, size, style, validator, name);
  33     }
  34     virtual ~wxTextCtrl();
  35
  36     bool Create(wxWindow *parent, wxWindowID id,
  37                 const wxString& value = wxEmptyString,
  38                 const wxPoint& pos = wxDefaultPosition,
  39                 const wxSize& size = wxDefaultSize,
  40                 long style = 0,
  41                 const wxValidator& validator = wxDefaultValidator,
  42                 const wxString& name = wxTextCtrlNameStr);
  43
  44     // implement base class pure virtuals
  45     // ----------------------------------
  46
  47     virtual wxString GetValue() const;
  48     virtual bool IsEmpty() const;
  49
  50     virtual wxString GetRange(long from, long to) const;
  51
  52     virtual int GetLineLength(long lineNo) const;
  53     virtual wxString GetLineText(long lineNo) const;
  54     virtual int GetNumberOfLines() const;
  55
  56     virtual bool IsModified() const;
  57     virtual bool IsEditable() const;
  58
  59     virtual void GetSelection(long* from, long* to) const;
  60
  61     // operations
  62     // ----------
  63
  64     // editing
  65     virtual void Clear();
  66     virtual void Replace(long from, long to, const wxString& value);
  67     virtual void Remove(long from, long to);
  68
  69     // load the control's contents from the file
  70     virtual bool DoLoadFile(const wxString& file, int fileType);
  71
  72     // clears the dirty flag
  73     virtual void MarkDirty();
  74     virtual void DiscardEdits();
  75
  76     virtual void SetMaxLength(unsigned long len);
  77
  78     // writing text inserts it at the current position, appending always
  79     // inserts it at the end
  80     virtual void WriteText(const wxString& text);
  81     virtual void AppendText(const wxString& text);
  82
  83 #ifdef __WIN32__
  84     virtual bool EmulateKeyPress(const wxKeyEvent& event);
  85 #endif // __WIN32__
  86
  87 #if wxUSE_RICHEDIT
  88     // apply text attribute to the range of text (only works with richedit
  89     // controls)
  90     virtual bool SetStyle(long start, long end, const wxTextAttr& style);
  91     virtual bool SetDefaultStyle(const wxTextAttr& style);
  92     virtual bool GetStyle(long position, wxTextAttr& style);
  93 #endif // wxUSE_RICHEDIT
  94
  95     // translate between the position (which is just an index in the text ctrl
  96     // considering all its contents as a single strings) and (x, y) coordinates
  97     // which represent column and line.
  98     virtual long XYToPosition(long x, long y) const;
  99     virtual bool PositionToXY(long pos, long *x, long *y) const;
 100
 101     virtual void ShowPosition(long pos);
 102     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt, long *pos) const;
 103     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt,
 104                                             wxTextCoord *col,
 105                                             wxTextCoord *row) const
 106     {
 107         return wxTextCtrlBase::HitTest(pt, col, row);
 108     }
 109
 110     // Clipboard operations
 111     virtual void Copy();
 112     virtual void Cut();
 113     virtual void Paste();
 114
 115     virtual bool CanCopy() const;
 116     virtual bool CanCut() const;
 117     virtual bool CanPaste() const;
 118
 119     // Undo/redo
 120     virtual void Undo();
 121     virtual void Redo();
 122
 123     virtual bool CanUndo() const;
 124     virtual bool CanRedo() const;
 125
 126     // Insertion point
 127     virtual void SetInsertionPoint(long pos);
 128     virtual void SetInsertionPointEnd();
 129     virtual long GetInsertionPoint() const;
 130     virtual wxTextPos GetLastPosition() const;
 131
 132     virtual void SetSelection(long from, long to);
 133     virtual void SetEditable(bool editable);
 134
 135     // Caret handling (Windows only)
 136
 137     bool ShowNativeCaret(bool show = true);
 138     bool HideNativeCaret() { return ShowNativeCaret(false); }
 139
 140     // Implementation from now on
 141     // --------------------------
 142
 143     virtual void SetWindowStyleFlag(long style);
 144
 145     virtual void Command(wxCommandEvent& event);
 146     virtual bool MSWCommand(WXUINT param, WXWORD id);
 147     virtual WXHBRUSH MSWControlColor(WXHDC hDC, WXHWND hWnd);
 148
 149 #if wxUSE_RICHEDIT
 150     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 151
 152     int GetRichVersion() const { return m_verRichEdit; }
 153     bool IsRich() const { return m_verRichEdit != 0; }
 154
 155     // rich edit controls are not compatible with normal ones and wem ust set
 156     // the colours for them otherwise
 157     virtual bool SetBackgroundColour(const wxColour& colour);
 158     virtual bool SetForegroundColour(const wxColour& colour);
 159 #else
 160     bool IsRich() const { return false; }
 161 #endif // wxUSE_RICHEDIT
 162
 163 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 164     bool IsInkEdit() const { return m_isInkEdit != 0; }
 165 #else
 166     bool IsInkEdit() const { return false; }
 167 #endif
 168
 169     virtual void AdoptAttributesFromHWND();
 170
 171     virtual bool AcceptsFocus() const;
 172
 173     // callbacks
 174     void OnDropFiles(wxDropFilesEvent& event);
 175     void OnChar(wxKeyEvent& event); // Process 'enter' if required
 176
 177     void OnCut(wxCommandEvent& event);
 178     void OnCopy(wxCommandEvent& event);
 179     void OnPaste(wxCommandEvent& event);
 180     void OnUndo(wxCommandEvent& event);
 181     void OnRedo(wxCommandEvent& event);
 182     void OnDelete(wxCommandEvent& event);
 183     void OnSelectAll(wxCommandEvent& event);
 184
 185     void OnUpdateCut(wxUpdateUIEvent& event);
 186     void OnUpdateCopy(wxUpdateUIEvent& event);
 187     void OnUpdatePaste(wxUpdateUIEvent& event);
 188     void OnUpdateUndo(wxUpdateUIEvent& event);
 189     void OnUpdateRedo(wxUpdateUIEvent& event);
 190     void OnUpdateDelete(wxUpdateUIEvent& event);
 191     void OnUpdateSelectAll(wxUpdateUIEvent& event);
 192
 193     // Show a context menu for Rich Edit controls (the standard
 194     // EDIT control has one already)
 195     void OnContextMenu(wxContextMenuEvent& event);
 196
 197     // be sure the caret remains invisible if the user
 198     // called HideNativeCaret() before
 199     void OnSetFocus(wxFocusEvent& event);
 200
 201     // intercept WM_GETDLGCODE
 202     virtual WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 203
 204     virtual bool MSWShouldPreProcessMessage(WXMSG* pMsg);
 205     virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
 206     virtual wxVisualAttributes GetDefaultAttributes() const;
 207
 208 protected:
 209     // common part of all ctors
 210     void Init();
 211
 212     // creates the control of appropriate class (plain or rich edit) with the
 213     // styles corresponding to m_windowStyle
 214     //
 215     // this is used by ctor/Create() and when we need to recreate the control
 216     // later
 217     bool MSWCreateText(const wxString& value,
 218                        const wxPoint& pos,
 219                        const wxSize& size);
 220
 221     virtual void DoSetValue(const wxString &value, int flags = 0);
 222
 223     // return true if this control has a user-set limit on amount of text (i.e.
 224     // the limit is due to a previous call to SetMaxLength() and not built in)
 225     bool HasSpaceLimit(unsigned int *len) const;
 226
 227     // call this to increase the size limit (will do nothing if the current
 228     // limit is big enough)
 229     //
 230     // returns true if we increased the limit to allow entering more text,
 231     // false if we hit the limit set by SetMaxLength() and so didn't change it
 232     bool AdjustSpaceLimit();
 233
 234 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 235     // replace the selection or the entire control contents with the given text
 236     // in the specified encoding
 237     bool StreamIn(const wxString& value, wxFontEncoding encoding, bool selOnly);
 238
 239     // get the contents of the control out as text in the given encoding
 240     wxString StreamOut(wxFontEncoding encoding, bool selOnly = false) const;
 241 #endif // wxUSE_RICHEDIT
 242
 243     // replace the contents of the selection or of the entire control with the
 244     // given text
 245     void DoWriteText(const wxString& text,
 246                      int flags = SetValue_SendEvent | SetValue_SelectionOnly);
 247
 248     // set the selection possibly without scrolling the caret into view
 249     void DoSetSelection(long from, long to, bool scrollCaret = true);
 250
 251     // return true if there is a non empty selection in the control
 252     bool HasSelection() const;
 253
 254     // get the length of the line containing the character at the given
 255     // position
 256     long GetLengthOfLineContainingPos(long pos) const;
 257
 258     // send TEXT_UPDATED event, return true if it was handled, false otherwise
 259     bool SendUpdateEvent();
 260
 261     virtual wxSize DoGetBestSize() const;
 262
 263 #if wxUSE_RICHEDIT
 264     // we're using RICHEDIT (and not simple EDIT) control if this field is not
 265     // 0, it also gives the version of the RICHEDIT control being used (1, 2 or
 266     // 3 so far)
 267     int m_verRichEdit;
 268 #endif // wxUSE_RICHEDIT
 269
 270     // number of EN_UPDATE events sent by Windows when we change the controls
 271     // text ourselves: we want this to be exactly 1
 272     int m_updatesCount;
 273
 274 private:
 275     DECLARE_EVENT_TABLE()
 276     DECLARE_DYNAMIC_CLASS_NO_COPY(wxTextCtrl)
 277
 278     wxMenu* m_privateContextMenu;
 279
 280     bool m_isNativeCaretShown;
 281
 282 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 283     int  m_isInkEdit;
 284 #endif
 285
 286 };
 287
 288 #endif
 289     // _WX_TEXTCTRL_H_