#------------------------------------------------------------------------------
#
#  Copyright (c) 2005, Enthought, Inc.
#  All rights reserved.
#
#  This software is provided without warranty under the terms of the BSD
#  license included in enthought/LICENSE.txt and may be redistributed only
#  under the conditions described in the aforementioned license.  The license
#  is also available online at http://www.enthought.com/licenses/BSD.txt
#
#  Thanks for using Enthought open source!
#
#  Author: David C. Morrill
#  Date:   10/21/2004
#
#------------------------------------------------------------------------------

""" Defines various directory editors for the wxPython user interface toolkit.
"""

#-------------------------------------------------------------------------
#  Imports:
#-------------------------------------------------------------------------

from __future__ import absolute_import
import wx

from os.path \
    import isdir

# FIXME: ToolkitEditorFactory is a proxy class defined here just for backward
# compatibility. The class has been moved to the
# traitsui.editors.custom_editor file.
from traitsui.editors.directory_editor \
    import ToolkitEditorFactory

from .file_editor \
    import SimpleEditor as SimpleFileEditor, \
    CustomEditor as CustomFileEditor, \
    PopupFile

#-------------------------------------------------------------------------
#  'SimpleEditor' class:
#-------------------------------------------------------------------------


class SimpleEditor(SimpleFileEditor):
    """ Simple style of editor for directories, which displays a text field
        and a **Browse** button that opens a directory-selection dialog box.
    """

    #-------------------------------------------------------------------------
    #  Creates the correct type of file dialog or popup:
    #-------------------------------------------------------------------------

    def _create_file_dialog(self):
        """ Creates the correct type of file dialog.
        """
        dlg = wx.DirDialog(self.control, message='Select a Directory')
        dlg.SetPath(self._file_name.GetValue())
        return dlg

    def _create_file_popup(self):
        """ Creates the correct type of file popup.
        """
        return PopupDirectory(control=self.control,
                              file_name=self.str_value,
                              filter=self.factory.filter,
                              height=300)

#-------------------------------------------------------------------------
#  'CustomEditor' class:
#-------------------------------------------------------------------------


class CustomEditor(CustomFileEditor):
    """ Custom style of editor for directories, which displays a tree view of
        the file system.
    """

    #-------------------------------------------------------------------------
    #  Returns the basic style to use for the control:
    #-------------------------------------------------------------------------

    def get_style(self):
        """ Returns the basic style to use for the control.
        """
        return (wx.DIRCTRL_DIR_ONLY | wx.DIRCTRL_EDIT_LABELS)

    #-------------------------------------------------------------------------
    #  Handles the user changing the contents of the edit control:
    #-------------------------------------------------------------------------

    def update_object(self, event):
        """ Handles the user changing the contents of the edit control.
        """
        if self.control is not None:
            path = self.control.GetPath()
            if isdir(path):
                self.value = path

#-------------------------------------------------------------------------
#  'PopupDirectory' class:
#-------------------------------------------------------------------------


class PopupDirectory(PopupFile):

    def get_style(self):
        """ Returns the basic style to use for the popup.
        """
        return (wx.DIRCTRL_DIR_ONLY | wx.DIRCTRL_EDIT_LABELS)

    def is_valid(self, path):
        """ Returns whether or not the path is valid.
        """
        return isdir(path)

### EOF ##################################################################