/////////////////////////////////////////////////////////////////////////////
// Name:        textctrl.h
// Purpose:     wxTextCtrl class
// Author:      David Webster
// Modified by:
// Created:     10/17/99
// RCS-ID:      $Id$
// Copyright:   (c) David Webster
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_TEXTCTRL_H_
#define _WX_TEXTCTRL_H_

class WXDLLEXPORT wxTextCtrl : public wxTextCtrlBase
{
public:
    // creation
    // --------

    wxTextCtrl();
    wxTextCtrl(wxWindow *parent, wxWindowID id,
               const wxString& value = wxEmptyString,
               const wxPoint& pos = wxDefaultPosition,
               const wxSize& size = wxDefaultSize,
               long style = 0,
#if wxUSE_VALIDATORS
               const wxValidator& validator = wxDefaultValidator,
#endif
               const wxString& name = wxTextCtrlNameStr)
    {
        Create(parent, id, value, pos, size, style, validator, name);
    }

    bool Create(wxWindow *parent, wxWindowID id,
                const wxString& value = wxEmptyString,
                const wxPoint& pos = wxDefaultPosition,
                const wxSize& size = wxDefaultSize,
                long style = 0,
#if wxUSE_VALIDATORS
                const wxValidator& validator = wxDefaultValidator,
#endif
                const wxString& name = wxTextCtrlNameStr);

    // implement base class pure virtuals
    // ----------------------------------

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

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

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

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

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

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

    // load the controls contents from the file
    virtual bool LoadFile(const wxString& file);

    // clears the dirty flag
    virtual void DiscardEdits();

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

    // 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;
    virtual bool PositionToXY(long pos, long *x, long *y) const;

    virtual void ShowPosition(long pos);

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

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

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

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

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

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

    // Implementation from now on
    // --------------------------

    virtual void Command(wxCommandEvent& event);
    virtual bool OS2Command(WXUINT param, WXWORD id);

    virtual WXHBRUSH OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
                                WXUINT message, WXWPARAM wParam,
                                WXLPARAM lParam);

    virtual void AdoptAttributesFromHWND();
    virtual void SetupColours();

    virtual bool AcceptsFocus() const;

    // callbacks
    void OnDropFiles(wxDropFilesEvent& event);
    void OnChar(wxKeyEvent& event); // Process 'enter' if required

    void OnCut(wxCommandEvent& event);
    void OnCopy(wxCommandEvent& event);
    void OnPaste(wxCommandEvent& event);
    void OnUndo(wxCommandEvent& event);
    void OnRedo(wxCommandEvent& event);

    void OnUpdateCut(wxUpdateUIEvent& event);
    void OnUpdateCopy(wxUpdateUIEvent& event);
    void OnUpdatePaste(wxUpdateUIEvent& event);
    void OnUpdateUndo(wxUpdateUIEvent& event);
    void OnUpdateRedo(wxUpdateUIEvent& event);

protected:
    // call this to increase the size limit (will do nothing if the current
    // limit is big enough)
    void AdjustSpaceLimit();

    virtual wxSize DoGetBestSize() const;

private:
    DECLARE_EVENT_TABLE()
    DECLARE_DYNAMIC_CLASS(wxTextCtrl)
};

#endif
    // _WX_TEXTCTRL_H_