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 WXDLLIMPEXP_CORE 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     // overridden wxTextEntry methods
  45     // ------------------------------
  46
  47     virtual wxString GetValue() const;
  48     virtual wxString GetRange(long from, long to) const;
  49
  50     virtual bool IsEmpty() const;
  51
  52     virtual void WriteText(const wxString& text);
  53     virtual void AppendText(const wxString& text);
  54     virtual void Clear();
  55
  56     virtual int GetLineLength(long lineNo) const;
  57     virtual wxString GetLineText(long lineNo) const;
  58     virtual int GetNumberOfLines() const;
  59
  60     virtual void SetMaxLength(unsigned long len);
  61
  62     virtual void GetSelection(long *from, long *to) const;
  63
  64     virtual void Redo();
  65     virtual bool CanRedo() const;
  66
  67     virtual void SetInsertionPointEnd();
  68     virtual long GetInsertionPoint() const;
  69     virtual wxTextPos GetLastPosition() const;
  70
  71     // implement base class pure virtuals
  72     // ----------------------------------
  73
  74     virtual bool IsModified() const;
  75     virtual void MarkDirty();
  76     virtual void DiscardEdits();
  77
  78 #ifdef __WIN32__
  79     virtual bool EmulateKeyPress(const wxKeyEvent& event);
  80 #endif // __WIN32__
  81
  82 #if wxUSE_RICHEDIT
  83     // apply text attribute to the range of text (only works with richedit
  84     // controls)
  85     virtual bool SetStyle(long start, long end, const wxTextAttr& style);
  86     virtual bool SetDefaultStyle(const wxTextAttr& style);
  87     virtual bool GetStyle(long position, wxTextAttr& style);
  88 #endif // wxUSE_RICHEDIT
  89
  90     // translate between the position (which is just an index in the text ctrl
  91     // considering all its contents as a single strings) and (x, y) coordinates
  92     // which represent column and line.
  93     virtual long XYToPosition(long x, long y) const;
  94     virtual bool PositionToXY(long pos, long *x, long *y) const;
  95
  96     virtual void ShowPosition(long pos);
  97     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt, long *pos) const;
  98     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt,
  99                                             wxTextCoord *col,
 100                                             wxTextCoord *row) const
 101     {
 102         return wxTextCtrlBase::HitTest(pt, col, row);
 103     }
 104
 105     // Caret handling (Windows only)
 106     bool ShowNativeCaret(bool show = true);
 107     bool HideNativeCaret() { return ShowNativeCaret(false); }
 108
 109     // Implementation from now on
 110     // --------------------------
 111
 112 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 113     virtual void SetDropTarget(wxDropTarget *dropTarget);
 114 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 115
 116     virtual void SetWindowStyleFlag(long style);
 117
 118     virtual void Command(wxCommandEvent& event);
 119     virtual bool MSWCommand(WXUINT param, WXWORD id);
 120     virtual WXHBRUSH MSWControlColor(WXHDC hDC, WXHWND hWnd);
 121
 122 #if wxUSE_RICHEDIT
 123     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 124
 125     int GetRichVersion() const { return m_verRichEdit; }
 126     bool IsRich() const { return m_verRichEdit != 0; }
 127
 128     // rich edit controls are not compatible with normal ones and we must set
 129     // the colours and font for them otherwise
 130     virtual bool SetBackgroundColour(const wxColour& colour);
 131     virtual bool SetForegroundColour(const wxColour& colour);
 132     virtual bool SetFont(const wxFont& font);
 133 #else
 134     bool IsRich() const { return false; }
 135 #endif // wxUSE_RICHEDIT
 136
 137 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 138     bool IsInkEdit() const { return m_isInkEdit != 0; }
 139 #else
 140     bool IsInkEdit() const { return false; }
 141 #endif
 142
 143     virtual void AdoptAttributesFromHWND();
 144
 145     virtual bool AcceptsFocusFromKeyboard() const;
 146
 147     // returns true if the platform should explicitly apply a theme border
 148     virtual bool CanApplyThemeBorder() const;
 149
 150     // callbacks
 151     void OnDropFiles(wxDropFilesEvent& event);
 152     void OnChar(wxKeyEvent& event); // Process 'enter' if required
 153
 154     void OnCut(wxCommandEvent& event);
 155     void OnCopy(wxCommandEvent& event);
 156     void OnPaste(wxCommandEvent& event);
 157     void OnUndo(wxCommandEvent& event);
 158     void OnRedo(wxCommandEvent& event);
 159     void OnDelete(wxCommandEvent& event);
 160     void OnSelectAll(wxCommandEvent& event);
 161
 162     void OnUpdateCut(wxUpdateUIEvent& event);
 163     void OnUpdateCopy(wxUpdateUIEvent& event);
 164     void OnUpdatePaste(wxUpdateUIEvent& event);
 165     void OnUpdateUndo(wxUpdateUIEvent& event);
 166     void OnUpdateRedo(wxUpdateUIEvent& event);
 167     void OnUpdateDelete(wxUpdateUIEvent& event);
 168     void OnUpdateSelectAll(wxUpdateUIEvent& event);
 169
 170     // Show a context menu for Rich Edit controls (the standard
 171     // EDIT control has one already)
 172     void OnContextMenu(wxContextMenuEvent& event);
 173
 174     // be sure the caret remains invisible if the user
 175     // called HideNativeCaret() before
 176     void OnSetFocus(wxFocusEvent& event);
 177
 178     // intercept WM_GETDLGCODE
 179     virtual WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 180
 181     virtual bool MSWShouldPreProcessMessage(WXMSG* pMsg);
 182     virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
 183
 184 protected:
 185     // common part of all ctors
 186     void Init();
 187
 188     virtual bool DoLoadFile(const wxString& file, int fileType);
 189
 190     // creates the control of appropriate class (plain or rich edit) with the
 191     // styles corresponding to m_windowStyle
 192     //
 193     // this is used by ctor/Create() and when we need to recreate the control
 194     // later
 195     bool MSWCreateText(const wxString& value,
 196                        const wxPoint& pos,
 197                        const wxSize& size);
 198
 199     virtual void DoSetValue(const wxString &value, int flags = 0);
 200
 201     virtual wxPoint DoPositionToCoords(long pos) const;
 202
 203     // return true if this control has a user-set limit on amount of text (i.e.
 204     // the limit is due to a previous call to SetMaxLength() and not built in)
 205     bool HasSpaceLimit(unsigned int *len) const;
 206
 207     // call this to increase the size limit (will do nothing if the current
 208     // limit is big enough)
 209     //
 210     // returns true if we increased the limit to allow entering more text,
 211     // false if we hit the limit set by SetMaxLength() and so didn't change it
 212     bool AdjustSpaceLimit();
 213
 214 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 215     // replace the selection or the entire control contents with the given text
 216     // in the specified encoding
 217     bool StreamIn(const wxString& value, wxFontEncoding encoding, bool selOnly);
 218
 219     // get the contents of the control out as text in the given encoding
 220     wxString StreamOut(wxFontEncoding encoding, bool selOnly = false) const;
 221 #endif // wxUSE_RICHEDIT
 222
 223     // replace the contents of the selection or of the entire control with the
 224     // given text
 225     void DoWriteText(const wxString& text,
 226                      int flags = SetValue_SendEvent | SetValue_SelectionOnly);
 227
 228     // set the selection (possibly without scrolling the caret into view)
 229     void DoSetSelection(long from, long to, int flags);
 230
 231     // get the length of the line containing the character at the given
 232     // position
 233     long GetLengthOfLineContainingPos(long pos) const;
 234
 235     // send TEXT_UPDATED event, return true if it was handled, false otherwise
 236     bool SendUpdateEvent();
 237
 238     virtual wxSize DoGetBestSize() const;
 239     virtual wxSize DoGetSizeFromTextSize(int xlen, int ylen = -1) const;
 240
 241 #if wxUSE_RICHEDIT
 242     // Apply the character-related parts of wxTextAttr to the given selection
 243     // or the entire control if start == end == -1.
 244     //
 245     // This function is private and should only be called for rich edit
 246     // controls and with (from, to) already in correct order, i.e. from <= to.
 247     bool MSWSetCharFormat(const wxTextAttr& attr, long from = -1, long to = -1);
 248
 249     // Same as above for paragraph-related parts of wxTextAttr. Note that this
 250     // can only be applied to the selection as RichEdit doesn't support setting
 251     // the paragraph styles globally.
 252     bool MSWSetParaFormat(const wxTextAttr& attr, long from, long to);
 253
 254
 255     // we're using RICHEDIT (and not simple EDIT) control if this field is not
 256     // 0, it also gives the version of the RICHEDIT control being used
 257     // (although not directly: 1 is for 1.0, 2 is for either 2.0 or 3.0 as we
 258     // can't nor really need to distinguish between them and 4 is for 4.1)
 259     int m_verRichEdit;
 260 #endif // wxUSE_RICHEDIT
 261
 262     // number of EN_UPDATE events sent by Windows when we change the controls
 263     // text ourselves: we want this to be exactly 1
 264     int m_updatesCount;
 265
 266 private:
 267     virtual void EnableTextChangedEvents(bool enable)
 268     {
 269         m_updatesCount = enable ? -1 : -2;
 270     }
 271
 272     // implement wxTextEntry pure virtual: it implements all the operations for
 273     // the simple EDIT controls
 274     virtual WXHWND GetEditHWND() const { return m_hWnd; }
 275
 276     void OnKeyDown(wxKeyEvent& event);
 277
 278     DECLARE_EVENT_TABLE()
 279     DECLARE_DYNAMIC_CLASS_NO_COPY(wxTextCtrl)
 280
 281     wxMenu* m_privateContextMenu;
 282
 283     bool m_isNativeCaretShown;
 284
 285 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 286     int  m_isInkEdit;
 287 #endif
 288
 289 };
 290
 291 #endif // _WX_TEXTCTRL_H_