textctrl.h

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    wxTextCtrlBase(){}
    ~wxTextCtrlBase(){}

    // accessors
    // ---------

    virtual wxString GetValue() const = 0;
    virtual void SetValue(const wxString& value) = 0;

    virtual wxString GetRange(long from, long to) const;

    virtual int GetLineLength(long lineNo) const = 0;
    virtual wxString GetLineText(long lineNo) const = 0;
    virtual int GetNumberOfLines() const = 0;

    virtual bool IsModified() const = 0;
    virtual bool IsEditable() const = 0;

    // more readable flag testing methods
    bool IsSingleLine() const { return !HasFlag(wxTE_MULTILINE); }
    bool IsMultiLine() const { return !IsSingleLine(); }

    // If the return values from and to are the same, there is no selection.
    virtual void GetSelection(long* from, long* to) const = 0;

    virtual wxString GetStringSelection() const;

    // operations
    // ----------

    // editing
    virtual void Clear() = 0;
    virtual void Replace(long from, long to, const wxString& value) = 0;
    virtual void Remove(long from, long to) = 0;

    // load/save the controls contents from/to the file
    virtual bool LoadFile(const wxString& file);
    virtual bool SaveFile(const wxString& file = wxEmptyString);

    // sets/clears the dirty flag
    virtual void MarkDirty() = 0;
    virtual void DiscardEdits() = 0;

    // set the max number of characters which may be entered in a single line
    // text control
    virtual void SetMaxLength(unsigned long WXUNUSED(len)) { }

    // writing text inserts it at the current position, appending always
    // inserts it at the end
    virtual void WriteText(const wxString& text) = 0;
    virtual void AppendText(const wxString& text) = 0;

    // insert the character which would have resulted from this key event,
    // return true if anything has been inserted
    virtual bool EmulateKeyPress(const wxKeyEvent& event);

    // text control under some platforms supports the text styles: these
    // methods allow to apply the given text style to the given selection or to
    // set/get the style which will be used for all appended text
    virtual bool SetStyle(long start, long end, const wxTextAttr& style);
    virtual bool GetStyle(long position, wxTextAttr& style);
    virtual bool SetDefaultStyle(const wxTextAttr& style);
    virtual const wxTextAttr& GetDefaultStyle() const;

    // translate between the position (which is just an index in the text ctrl
    // considering all its contents as a single strings) and (x, y) coordinates
    // which represent column and line.
    virtual long XYToPosition(long x, long y) const = 0;
    virtual bool PositionToXY(long pos, long *x, long *y) const = 0;

    virtual void ShowPosition(long pos) = 0;

    // find the character at position given in pixels
    //
    // NB: pt is in device coords (not adjusted for the client area origin nor
    //     scrolling)
    virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt, long *pos) const;
    virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt,
                                            wxTextCoord *col,
                                            wxTextCoord *row) const;

    // Clipboard operations
    virtual void Copy() = 0;
    virtual void Cut() = 0;
    virtual void Paste() = 0;

    virtual bool CanCopy() const;
    virtual bool CanCut() const;
    virtual bool CanPaste() const;

    // Undo/redo
    virtual void Undo() = 0;
    virtual void Redo() = 0;

    virtual bool CanUndo() const = 0;
    virtual bool CanRedo() const = 0;

    // Insertion point
    virtual void SetInsertionPoint(long pos) = 0;
    virtual void SetInsertionPointEnd() = 0;
    virtual long GetInsertionPoint() const = 0;
    virtual wxTextPos GetLastPosition() const = 0;

    virtual void SetSelection(long from, long to) = 0;
    virtual void SelectAll();
    virtual void SetEditable(bool editable) = 0;

    // override streambuf method
#if wxHAS_TEXT_WINDOW_STREAM
    int overflow(int i);
#endif // wxHAS_TEXT_WINDOW_STREAM

    // stream-like insertion operators: these are always available, whether we
    // were, or not, compiled with streambuf support
    wxTextCtrl& operator<<(const wxString& s);
    wxTextCtrl& operator<<(int i);
    wxTextCtrl& operator<<(long i);
    wxTextCtrl& operator<<(float f);
    wxTextCtrl& operator<<(double d);
    wxTextCtrl& operator<<(const wxChar c);

    // do the window-specific processing after processing the update event
    virtual void DoUpdateWindowUI(wxUpdateUIEvent& event);

    virtual bool ShouldInheritColours() const { return false; }

protected:
    // the name of the last file loaded with LoadFile() which will be used by
    // SaveFile() by default
    wxString m_filename;

    // the text style which will be used for any new text added to the control
    wxTextAttr m_defaultStyle;

    DECLARE_NO_COPY_CLASS(wxTextCtrlBase)
};

// ----------------------------------------------------------------------------
// include the platform-dependent class definition
// ----------------------------------------------------------------------------

#if defined(__WXX11__)
    #include "wx/x11/textctrl.h"
#elif defined(__WXUNIVERSAL__)
    #include "wx/univ/textctrl.h"
#elif defined(__SMARTPHONE__) && defined(__WXWINCE__)
    #include "wx/msw/wince/textctrlce.h"
#elif defined(__WXMSW__)
    #include "wx/msw/textctrl.h"
#elif defined(__WXMOTIF__)
    #include "wx/motif/textctrl.h"
#elif defined(__WXGTK__)
    #include "wx/gtk/textctrl.h"
#elif defined(__WXMAC__)
    #include "wx/mac/textctrl.h"
#elif defined(__WXCOCOA__)
    #include "wx/cocoa/textctrl.h"
#elif defined(__WXPM__)
    #include "wx/os2/textctrl.h"
#endif

// ----------------------------------------------------------------------------
// wxTextCtrl events
// ----------------------------------------------------------------------------

#if !WXWIN_COMPATIBILITY_EVENT_TYPES

BEGIN_DECLARE_EVENT_TYPES()
    DECLARE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED, 7)
    DECLARE_EVENT_TYPE(wxEVT_COMMAND_TEXT_ENTER, 8)
    DECLARE_EVENT_TYPE(wxEVT_COMMAND_TEXT_URL, 13)
    DECLARE_EVENT_TYPE(wxEVT_COMMAND_TEXT_MAXLEN, 14)
END_DECLARE_EVENT_TYPES()

#endif // !WXWIN_COMPATIBILITY_EVENT_TYPES

class WXDLLEXPORT wxTextUrlEvent : public wxCommandEvent
{
public:
    wxTextUrlEvent(int winid, const wxMouseEvent& evtMouse,
                   long start, long end)
        : wxCommandEvent(wxEVT_COMMAND_TEXT_URL, winid)
        , m_evtMouse(evtMouse), m_start(start), m_end(end)
        { }

    // get the mouse event which happend over the URL
    const wxMouseEvent& GetMouseEvent() const { return m_evtMouse; }

    // get the start of the URL
    long GetURLStart() const { return m_start; }

    // get the end of the URL
    long GetURLEnd() const { return m_end; }

protected:
    // the corresponding mouse event
    wxMouseEvent m_evtMouse;

    // the start and end indices of the URL in the text control
    long m_start,
         m_end;

private:
    DECLARE_DYNAMIC_CLASS_NO_COPY(wxTextUrlEvent)

public:
    // for wxWin RTTI only, don't use
    wxTextUrlEvent() : m_evtMouse(), m_start(0), m_end(0) { }
};

typedef void (wxEvtHandler::*wxTextUrlEventFunction)(wxTextUrlEvent&);

#define wxTextEventHandler(func) wxCommandEventHandler(func)
#define wxTextUrlEventHandler(func) \
    (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxTextUrlEventFunction, &func)

#define wx__DECLARE_TEXTEVT(evt, id, fn) \
    wx__DECLARE_EVT1(wxEVT_COMMAND_TEXT_ ## evt, id, wxTextEventHandler(fn))

#define wx__DECLARE_TEXTURLEVT(evt, id, fn) \
    wx__DECLARE_EVT1(wxEVT_COMMAND_TEXT_ ## evt, id, wxTextUrlEventHandler(fn))

#define EVT_TEXT(id, fn) wx__DECLARE_TEXTEVT(UPDATED, id, fn)
#define EVT_TEXT_ENTER(id, fn) wx__DECLARE_TEXTEVT(ENTER, id, fn)
#define EVT_TEXT_URL(id, fn) wx__DECLARE_TEXTURLEVT(URL, id, fn)
#define EVT_TEXT_MAXLEN(id, fn) wx__DECLARE_TEXTEVT(MAXLEN, id, fn)

#if wxHAS_TEXT_WINDOW_STREAM

// ----------------------------------------------------------------------------
// wxStreamToTextRedirector: this class redirects all data sent to the given
// C++ stream to the wxTextCtrl given to its ctor during its lifetime.
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxStreamToTextRedirector
{
private:
    void Init(wxTextCtrl *text)
    {
        m_sbufOld = m_ostr.rdbuf();
        m_ostr.rdbuf(text);
    }

public:
    wxStreamToTextRedirector(wxTextCtrl *text)
        : m_ostr(wxSTD cout)
    {
        Init(text);
    }

    wxStreamToTextRedirector(wxTextCtrl *text, wxSTD ostream *ostr)
        : m_ostr(*ostr)
    {
        Init(text);
    }

    ~wxStreamToTextRedirector()
    {
        m_ostr.rdbuf(m_sbufOld);
    }

private:
    // the stream we're redirecting
    wxSTD ostream&   m_ostr;

    // the old streambuf (before we changed it)
    wxSTD streambuf *m_sbufOld;
};

#endif // wxHAS_TEXT_WINDOW_STREAM

#endif // wxUSE_TEXTCTRL

#endif
    // _WX_TEXTCTRL_H_BASE_