# (C) Copyright 2004-2021 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in 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
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""" Traits UI editor factory for editing lists of strings.
"""

from pyface.image_resource import ImageResource
from traits.api import Any, Str, Enum, List, Bool, Instance, Property

from traitsui.basic_editor_factory import BasicEditorFactory
from traitsui.toolkit import toolkit_object

# -------------------------------------------------------------------------
#  'ListStrEditor' editor factory class:
# -------------------------------------------------------------------------


class ListStrEditor(BasicEditorFactory):
    """ Editor factory for list of string editors.
    """

    # -- Trait Definitions ----------------------------------------------------

    #: The editor class to be created:
    klass = Property()

    #: The optional extended name of the trait to synchronize the selection
    #: values with:
    selected = Str()

    #: The optional extended name of the trait to synchronize the selection
    #: indices with:
    selected_index = Str()

    #: The optional extended name of the trait to synchronize the activated
    #: value with:
    activated = Str()

    #: The optional extended name of the trait to synchronize the activated
    #: value's index with:
    activated_index = Str()

    #: The optional extended name of the trait to synchronize the right clicked
    #: value with:
    right_clicked = Str()

    #: The optional extended name of the trait to synchronize the right clicked
    #: value's index with:
    right_clicked_index = Str()

    #: Can the user edit the values?
    editable = Bool(True)

    #: Are multiple selected items allowed?
    multi_select = Bool(False)

    #: Should horizontal lines be drawn between items?
    horizontal_lines = Bool(False)

    #: The title for the editor:
    title = Str()

    #: The optional extended name of the trait containing the editor title:
    title_name = Str()

    #: Should a new item automatically be added to the end of the list to allow
    #: the user to create new entries?
    auto_add = Bool(False)

    #: The adapter from list items to editor values:
    adapter = Instance("traitsui.list_str_adapter.ListStrAdapter", ())

    #: The optional extended name of the trait containing the adapter:
    adapter_name = Str()

    #: What type of operations are allowed on the list:
    operations = List(
        Enum("delete", "insert", "append", "edit", "move"),
        ["delete", "insert", "append", "edit", "move"],
    )

    #: Are 'drag_move' operations allowed (i.e. True), or should they always be
    #: treated as 'drag_copy' operations (i.e. False):
    drag_move = Bool(False)

    #: The set of images that can be used:
    images = List(ImageResource)

    #: Right-click context menu (Qt4 only). The value can be one of:
    #:
    #: - Instance( Menu ): Use this menu as the context menu
    #: - string: Name of traits that will provide menu
    #: - None: Use the default context menu
    #: - False: Do not display a context menu
    menu = Any()

    def _get_klass(self):
        """ Returns the editor class to be created.
        """
        return toolkit_object("list_str_editor:_ListStrEditor")