mirror of
https://github.com/Textualize/textual.git
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328 lines
8.8 KiB
Python
328 lines
8.8 KiB
Python
from __future__ import annotations
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from functools import partial
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from typing import Any
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from textual._on import on
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from textual.app import App, ComposeResult
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from textual.binding import Binding
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from textual.containers import Grid, Horizontal, VerticalScroll
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from textual.widgets import (
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Button,
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Collapsible,
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DataTable,
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Footer,
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Input,
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Label,
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ListItem,
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ListView,
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OptionList,
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RadioSet,
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Select,
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SelectionList,
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Switch,
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Tabs,
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TextArea,
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Tree,
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)
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from textual.widgets._masked_input import MaskedInput
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from textual.widgets._toggle_button import ToggleButton
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from textual.widgets.option_list import Option
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from textual.widgets.text_area import Selection
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HEADERS = ("lane", "swimmer", "country", "time")
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ROWS = [
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(4, "Joseph Schooling", "Singapore", 50.39),
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(2, "Michael Phelps", "United States", 51.14),
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(5, "Chad le Clos", "South Africa", 51.14),
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(6, "László Cseh", "Hungary", 51.14),
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(3, "Li Zhuhao", "China", 51.26),
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(8, "Mehdy Metella", "France", 51.58),
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(7, "Tom Shields", "United States", 51.73),
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(1, "Aleksandr Sadovnikov", "Russia", 51.84),
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(10, "Darren Burns", "Scotland", 51.84),
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]
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LOREM_IPSUM = """\
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla facilisi. Sed euismod, nunc sit amet aliquam lacinia, nisl nisl aliquam nisl, nec aliquam nisl nisl sit amet lorem. Sed euismod, nunc sit amet aliquam lacinia, nisl nisl aliquam nisl, nec aliquam nisl nisl sit amet lorem. Sed euismod, nunc sit amet aliquam lacinia, nisl nisl aliquam nisl, nec aliquam nisl nisl sit amet lorem.
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"""
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class ThemeList(OptionList):
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def on_mount(self) -> None:
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self.add_options(
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[Option(name, id=name) for name in self.app.available_themes.keys()]
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)
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class ColorSample(Label):
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pass
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class ChangingThemeApp(App[None]):
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CSS = """
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#buttons {
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height: 3;
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& > Button {
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width: 10;
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margin-right: 1;
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}
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}
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ThemeList {
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height: 1fr;
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width: auto;
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dock: left;
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margin-bottom: 1;
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}
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TextArea {
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height: 8;
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scrollbar-gutter: stable;
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}
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DataTable {
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height: 8;
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}
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ColorSample {
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width: 1fr;
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color: $text;
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&.primary {
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background: $primary;
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}
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&.secondary {
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background: $secondary;
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}
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&.accent {
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background: $accent;
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}
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&.warning {
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background: $warning;
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}
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&.error {
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background: $error;
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}
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&.success {
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background: $success;
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}
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&.foreground, &.background {
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color: $foreground;
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background: $background;
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}
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&.surface {
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background: $surface;
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}
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&.panel {
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background: $panel;
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}
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}
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ListView {
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height: auto;
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& > ListItem {
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width: 1fr;
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& > Label {
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width: 1fr;
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}
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}
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}
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Tree {
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height: 5;
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}
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#palette {
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height: auto;
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grid-size: 3;
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border-bottom: solid $border;
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}
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#widget-list {
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& > OptionList {
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height: 6;
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}
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& > RadioSet {
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height: 6;
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}
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}
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#widget-list {
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}
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#widget-list > * {
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margin: 1 2;
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}
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.panel {
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background: $panel;
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}
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.no-border {
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border: none;
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}
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"""
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BINDINGS = [
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Binding(
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"ctrl+d",
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"toggle_dark",
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"Toggle Dark",
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tooltip="Switch between light and dark themes",
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),
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Binding(
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"ctrl+a",
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"toggle_panel",
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"Toggle panel",
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tooltip="Add or remove the panel class from the widget gallery",
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),
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Binding(
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"ctrl+b",
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"toggle_border",
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"Toggle border",
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tooltip="Add or remove the borders from widgets",
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),
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Binding(
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"ctrl+i",
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"invalid_theme",
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"Invalid theme",
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tooltip="Set an invalid theme (to test exceptions)",
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),
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Binding(
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"ctrl+o",
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"widget_search",
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"Widget search",
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tooltip="Search for a widget",
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),
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]
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def action_toggle_dark(self) -> None:
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self.theme = "textual-light" if self.theme == "textual-dark" else "textual-dark"
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def action_toggle_panel(self) -> None:
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self.query_one("#widget-list").toggle_class("panel")
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def action_toggle_border(self) -> None:
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self.query("#widget-list > *").toggle_class("no-border")
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def action_invalid_theme(self) -> None:
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self.theme = "not-a-theme"
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def action_widget_search(self) -> None:
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self.search(
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[
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(
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widget.__class__.__name__,
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(
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partial(self.set_focus, widget)
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if widget.can_focus
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else lambda: None
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),
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f"Focus on {widget.__class__.__name__}",
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)
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for widget in self.query("#widget-list > *")
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],
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placeholder="Search for a widget...",
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)
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def watch_theme(self, theme_name: str) -> None:
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print(theme_name)
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def compose(self) -> ComposeResult:
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with Grid(id="palette"):
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theme = self.get_theme(self.theme)
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for variable, value in vars(theme).items():
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if variable not in {
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"name",
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"dark",
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"luminosity_spread",
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"text_alpha",
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"variables",
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}:
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yield ColorSample(f"{variable}", classes=variable)
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yield ThemeList(id="theme-list")
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with VerticalScroll(id="widget-list") as container:
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container.border_title = "Widget Gallery"
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container.can_focus = False
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with Collapsible(title="An interesting story."):
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yield Label("Interesting but verbose story.")
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with Horizontal(id="buttons"):
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yield Button("Button 1")
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yield Button.success("Success 2")
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yield Button.error("Error 3")
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yield Button.warning("Warning 4")
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yield Tabs("First tab", "Second tab", "Third tab", "Fourth tab")
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yield Select(
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[("foo", "foo"), ("bar", "bar"), ("baz", "baz"), ("qux", "qux")]
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)
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yield MaskedInput(
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template="9999-9999-9999-9999;0",
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)
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yield Input(placeholder="Hello, world!")
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yield TextArea(LOREM_IPSUM)
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tree: Tree[str] = Tree("Dune")
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tree.root.expand()
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characters = tree.root.add("Characters", expand=True)
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characters.add_leaf("Paul")
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characters.add_leaf("Jessica")
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characters.add_leaf("Chani")
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yield tree
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table = DataTable[Any]()
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table.add_columns(*HEADERS)
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table.add_rows(ROWS)
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yield table
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yield ListView(
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ListItem(Label("One")),
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ListItem(Label("Two")),
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ListItem(Label("Three")),
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)
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yield OptionList(
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"Aerilon",
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"Aquaria",
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"Canceron",
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"Caprica",
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"Gemenon",
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"Leonis",
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"Libran",
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"Picon",
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"Sagittaron",
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"Scorpia",
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"Tauron",
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"Virgon",
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)
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yield Switch()
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yield ToggleButton(label="Toggle Button")
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yield SelectionList[int](
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("Falken's Maze", 0, True),
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("Black Jack", 1),
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("Gin Rummy", 2),
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("Hearts", 3),
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("Bridge", 4),
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("Checkers", 5),
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("Chess", 6, True),
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("Poker", 7),
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("Fighter Combat", 8, True),
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)
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yield RadioSet(
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"Amanda",
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"Connor MacLeod",
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"Duncan MacLeod",
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"Heather MacLeod",
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"Joe Dawson",
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"Kurgan, [bold italic red]The[/]",
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"Methos",
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"Rachel Ellenstein",
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"Ramírez",
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)
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yield Footer()
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def on_mount(self) -> None:
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self.theme = "nord"
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text_area = self.query_one(TextArea)
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text_area.selection = Selection((0, 0), (1, 10))
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@on(ThemeList.OptionHighlighted, selector="#theme-list")
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def _change_theme(self, event: ThemeList.OptionHighlighted) -> None:
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self.app.theme = event.option.id or "textual-dark"
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app = ChangingThemeApp()
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if __name__ == "__main__":
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app.run()
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