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#------------------------------------------------------------------------------
# Copyright (c) 2013-2025, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
#------------------------------------------------------------------------------
from atom.api import Atom, Bool, Enum, Str
from enaml.core.looper import Looper
from enaml.layout.layout_helpers import hbox
from enaml.widgets.container import Container
from enaml.widgets.push_button import PushButton
class DialogButton(Atom):
""" A class for specifying a button in a button box.
Instances of this class are created by users to specify the buttons
which will be shown in a DialogButtonBox.
"""
#: The text for the button.
text = Str()
#: The dialog action to perform when the button is clicked.
action = Enum('accept', 'reject')
#: Whether or not the button is the default button for the dialog.
default = Bool(False)
#: Whether or not the button is enabled. The button will subscribe
#: to this attribute, and reflect the changes at runtime.
enabled = Bool(True)
#: Whether or not the button was clicked by the user.
was_clicked = Bool(False)
def __init__(self, text, action, **kwargs):
""" Initialize a DialogButton.
Parameters
----------
text : unicode
The unicode label for the button.
action : 'accept' or 'reject'
The dialog action to perform when the button is clicked.
**kwargs
Additional optional state to apply to the button.
"""
super(DialogButton, self).__init__(text=text, action=action, **kwargs)
enamldef DialogButtonBox(Container): box:
""" A component for defining a button box for a dialog.
The dialog button box must be used as a decendant of a Dialog, and
relies on dynamic scoping to invoke the dialog action when a button
is clicked. The button widgets created by the dialog can be styled
using the style class 'dialog-box-button'.
Attributes
----------
buttons : list
A list of DialogButton objects which represent the buttons to
create for the dialog box. This value should be set before the
widget is shown. Dynamic changes will not update the UI.
Events
------
clicked
This event will be emitted when a button is clicked, but before
the dialog action is taken. The payload will be the DialogButton
instance for the button which was clicked.
"""
attr buttons: list = []
event clicked: DialogButton
padding = 1 # Fix a small clipping issue observed on MacOSX
constraints = [hbox(*sum(looper.items, []), spacing=6)]
Looper: looper:
iterable = buttons
PushButton:
style_class = 'dialog-box-button'
text = loop.item.text
default = loop.item.default
enabled << loop.item.enabled
clicked ::
loop.item.was_clicked = True
box.clicked(loop.item)
nonlocals[loop.item.action]()
|
