HomeDashboard/.venv/lib/python3.12/site-packages/nicegui/elements/stepper.py
2026-01-03 14:54:18 +01:00

88 lines
3.4 KiB
Python

from __future__ import annotations
from typing import Any, cast
from ..context import context
from ..element import Element
from ..events import Handler, ValueChangeEventArguments
from .mixins.disableable_element import DisableableElement
from .mixins.icon_element import IconElement
from .mixins.value_element import ValueElement
class Stepper(ValueElement, default_classes='nicegui-stepper'):
def __init__(self, *,
value: str | Step | None = None,
on_value_change: Handler[ValueChangeEventArguments] | None = None,
keep_alive: bool = True,
) -> None:
"""Stepper
This element represents `Quasar's QStepper <https://quasar.dev/vue-components/stepper#qstepper-api>`_ component.
It contains individual steps.
To avoid issues with dynamic elements when switching steps,
this element uses Vue's `keep-alive <https://vuejs.org/guide/built-ins/keep-alive.html>`_ component.
If client-side performance is an issue, you can disable this feature.
:param value: `ui.step` or name of the step to be initially selected (default: `None` meaning the first step)
:param on_value_change: callback to be executed when the selected step changes
:param keep_alive: whether to use Vue's keep-alive component on the content (default: `True`)
"""
super().__init__(tag='q-stepper', value=value, on_value_change=on_value_change)
self._props['keep-alive'] = keep_alive
def _value_to_model_value(self, value: Any) -> Any:
return value.props['name'] if isinstance(value, Step) else value
def _handle_value_change(self, value: Any) -> None:
super()._handle_value_change(value)
names = [step.props['name'] for step in self]
for i, step in enumerate(self):
done = i < names.index(value) if value in names else False
step.props(f':done={done}')
def next(self) -> None:
"""Show the next step."""
self.run_method('next')
def previous(self) -> None:
"""Show the previous step."""
self.run_method('previous')
class Step(IconElement, DisableableElement, default_classes='nicegui-step'):
def __init__(self, name: str, title: str | None = None, icon: str | None = None) -> None:
"""Step
This element represents `Quasar's QStep <https://quasar.dev/vue-components/stepper#qstep-api>`_ component.
It is a child of a `ui.stepper` element.
:param name: name of the step (will be the value of the `ui.stepper` element)
:param title: title of the step (default: `None`, meaning the same as `name`)
:param icon: icon of the step (default: `None`)
"""
super().__init__(tag='q-step', icon=icon)
self._props['name'] = name
self._props['title'] = title if title is not None else name
self.stepper = cast(ValueElement, context.slot.parent)
if self.stepper.value is None:
self.stepper.value = name
class StepperNavigation(Element):
def __init__(self, *, wrap: bool = True) -> None:
"""Stepper Navigation
This element represents `Quasar's QStepperNavigation https://quasar.dev/vue-components/stepper#qsteppernavigation-api>`_ component.
:param wrap: whether to wrap the content (default: `True`)
"""
super().__init__('q-stepper-navigation')
if wrap:
self._classes.append('wrap')