Implement wxDocument::Revert() and show its use in the sample.

[wxWidgets.git] / interface / wx / dirdlg.h

/////////////////////////////////////////////////////////////////////////////
// Name:        dirdlg.h
// Purpose:     interface of wxDirDialog
// Author:      wxWidgets team
// RCS-ID:      $Id$
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

/**
    @class wxDirDialog

    This class represents the directory chooser dialog.

    @beginStyleTable
    @style{wxDD_DEFAULT_STYLE}
           Equivalent to a combination of wxDEFAULT_DIALOG_STYLE and
           wxRESIZE_BORDER (the last one is not used under wxWinCE).
    @style{wxDD_DIR_MUST_EXIST}
           The dialog will allow the user to choose only an existing folder.
           When this style is not given, a "Create new directory" button is
           added to the dialog (on Windows) or some other way is provided to
           the user to type the name of a new folder.
    @style{wxDD_CHANGE_DIR}
           Change the current working directory to the directory chosen by the
           user.
    @endStyleTable

    Notice that @c wxRESIZE_BORDER has special side effect under recent (i.e.
    later than Win9x) Windows where two different directory selection dialogs
    are available and this style also implicitly selects the new version as the
    old one always has fixed size. As the new version is almost always
    preferable, it is recommended that @c wxRESIZE_BORDER style be always used.
    This is the case if the dialog is created with the default style value but
    if you need to use any additional styles you should still specify @c
    wxDD_DEFAULT_STYLE unless you explicitly need to use the old dialog version
    under Windows. E.g. do
    @code
        wxDirDialog dlg(NULL, "Choose input directory", "",
                        wxDD_DEFAULT_STYLE | wxDD_DIR_MUST_EXIST);
    @endcode
    instead of just using @c wxDD_DIR_MUST_EXIST style alone.

    @library{wxcore}
    @category{cmndlg}

    @see @ref overview_cmndlg_dir, wxFileDialog
*/
class wxDirDialog : public wxDialog
{
public:
    /**
        Constructor. Use ShowModal() to show the dialog.

        @param parent
            Parent window.
        @param message
            Message to show on the dialog.
        @param defaultPath
            The default path, or the empty string.
        @param style
            The dialog style. See wxDirDialog
        @param pos
            Dialog position. Ignored under Windows.
        @param size
            Dialog size. Ignored under Windows.
        @param name
            The dialog name, not used.
    */
    wxDirDialog(wxWindow* parent,
                const wxString& message = wxDirSelectorPromptStr,
                const wxString& defaultPath = wxEmptyString,
                long style = wxDD_DEFAULT_STYLE,
                const wxPoint& pos = wxDefaultPosition,
                const wxSize& size = wxDefaultSize,
                const wxString& name = wxDirDialogNameStr);

    /**
        Destructor.
    */
    virtual ~wxDirDialog();

    /**
        Returns the message that will be displayed on the dialog.
    */
    virtual wxString GetMessage() const;

    /**
        Returns the default or user-selected path.
    */
    virtual wxString GetPath() const;

    /**
        Sets the message that will be displayed on the dialog.
    */
    virtual void SetMessage(const wxString& message);

    /**
        Sets the default path.
    */
    virtual void SetPath(const wxString& path);

    /**
        Shows the dialog, returning wxID_OK if the user pressed OK, and
        wxID_CANCEL otherwise.
    */
    int ShowModal();
};



// ============================================================================
// Global functions/macros
// ============================================================================

/** @addtogroup group_funcmacro_dialog */
//@{

/**
    Pops up a directory selector dialog. The arguments have the same meaning
    as those of wxDirDialog::wxDirDialog(). The message is displayed at the
    top, and the default_path, if specified, is set as the initial selection.

    The application must check for an empty return value (if the user pressed
    Cancel). For example:

    @code
    const wxString& dir = wxDirSelector("Choose a folder");
    if ( !dir.empty() )
    {
        ...
    }
    @endcode

    @header{wx/dirdlg.h}
*/
wxString wxDirSelector(const wxString& message = wxDirSelectorPromptStr,
                       const wxString& default_path = wxEmptyString,
                       long style = 0,
                       const wxPoint& pos = wxDefaultPosition,
                       wxWindow* parent = NULL);

//@}