Implement HasSelection for the OSX WebKit backend.

[wxWidgets.git] / include / wx / msw / textentry.h

///////////////////////////////////////////////////////////////////////////////
// Name:        wx/msw/textentry.h
// Purpose:     wxMSW-specific wxTextEntry implementation
// Author:      Vadim Zeitlin
// Created:     2007-09-26
// RCS-ID:      $Id$
// Copyright:   (c) 2007 Vadim Zeitlin <vadim@wxwindows.org>
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#ifndef _WX_MSW_TEXTENTRY_H_
#define _WX_MSW_TEXTENTRY_H_

class wxTextAutoCompleteData; // private class used only by wxTextEntry itself

// ----------------------------------------------------------------------------
// wxTextEntry: common part of wxComboBox and (single line) wxTextCtrl
// ----------------------------------------------------------------------------

class WXDLLIMPEXP_CORE wxTextEntry : public wxTextEntryBase
{
public:
    wxTextEntry();
    virtual ~wxTextEntry();

    // implement wxTextEntryBase pure virtual methods
    virtual void WriteText(const wxString& text);
    virtual void Remove(long from, long to);

    virtual void Copy();
    virtual void Cut();
    virtual void Paste();

    virtual void Undo();
    virtual void Redo();
    virtual bool CanUndo() const;
    virtual bool CanRedo() const;

    virtual void SetInsertionPoint(long pos);
    virtual long GetInsertionPoint() const;
    virtual long GetLastPosition() const;

    virtual void SetSelection(long from, long to)
        { DoSetSelection(from, to); }
    virtual void GetSelection(long *from, long *to) const;

    virtual bool IsEditable() const;
    virtual void SetEditable(bool editable);

    virtual void SetMaxLength(unsigned long len);

#if wxUSE_UXTHEME
    virtual bool SetHint(const wxString& hint);
    virtual wxString GetHint() const;
#endif // wxUSE_UXTHEME

protected:
    virtual wxString DoGetValue() const;

    // this is really a hook for multiline text controls as the single line
    // ones don't need to ever scroll to show the selection but having it here
    // allows us to put Remove() in the base class
    enum
    {
        SetSel_NoScroll = 0,    // don't do anything special
        SetSel_Scroll = 1       // default: scroll to make the selection visible
    };
    virtual void DoSetSelection(long from, long to, int flags = SetSel_Scroll);

    // margins functions
    virtual bool DoSetMargins(const wxPoint& pt);
    virtual wxPoint DoGetMargins() const;

    // auto-completion uses COM under Windows so they won't work without
    // wxUSE_OLE as OleInitialize() is not called then
#if wxUSE_OLE
    virtual bool DoAutoCompleteStrings(const wxArrayString& choices);
    virtual bool DoAutoCompleteFileNames();
    virtual bool DoAutoCompleteCustom(wxTextCompleter *completer);
#endif // wxUSE_OLE

private:
    // implement this to return the HWND of the EDIT control
    virtual WXHWND GetEditHWND() const = 0;

#if wxUSE_OLE
    // Get the auto-complete object creating it if necessary. Returns NULL if
    // creating it failed.
    wxTextAutoCompleteData *GetOrCreateCompleter();

    // Various auto-completion-related stuff, only used if any of AutoComplete()
    // methods are called. Use the function above to access it.
    wxTextAutoCompleteData *m_autoCompleteData;

    // It needs to call our GetEditableWindow() and GetEditHWND() methods.
    friend class wxTextAutoCompleteData;
#endif // wxUSE_OLE
};

#endif // _WX_MSW_TEXTENTRY_H_