def ArtistList(): artist_to_add, set_artist_to_add = use_state("") artists, set_artists = use_state( ["Marta Colvin Andrade", "Lamidi Olonade Fakeye", "Louise Nevelson"]) def handle_change(event): set_artist_to_add(event["target"]["value"]) def handle_add_click(event): if artist_to_add not in artists: set_artists([*artists, artist_to_add]) set_artist_to_add("") def make_handle_delete_click(index): def handle_click(event): set_artists(artists[:index] + artists[index + 1:]) return handle_click return html.div( html.h1("Inspiring sculptors:"), html.input({ "value": artist_to_add, "onChange": handle_change }), html.button({"onClick": handle_add_click}, "add"), html.ul([ html.li( name, html.button({"onClick": make_handle_delete_click(index)}, "delete"), key=name, ) for index, name in enumerate(artists) ]), )
def App(): is_sent, set_is_sent = use_state(False) message, set_message = use_state("") if is_sent: return html.div( html.h1("Message sent!"), html.button( {"onClick": lambda event: set_is_sent(False)}, "Send new message?" ), ) @event(prevent_default=True) def handle_submit(event): set_message("") set_is_sent(True) return html.form( {"onSubmit": handle_submit, "style": {"display": "inline-grid"}}, html.textarea( { "placeholder": "Your message here...", "value": message, "onChange": lambda event: set_message(event["target"]["value"]), } ), html.button({"type": "submit"}, "Send"), )
def ColorButton(): color, set_color = use_state("gray") def handle_click(event): set_color("orange") set_color("pink") set_color("blue") def handle_reset(event): set_color("gray") return html.div( html.button( { "onClick": handle_click, "style": { "backgroundColor": color } }, "Set Color"), html.button( { "onClick": handle_reset, "style": { "backgroundColor": color } }, "Reset"), )
def Definitions(): term_to_add, set_term_to_add = use_state(None) definition_to_add, set_definition_to_add = use_state(None) all_terms, set_all_terms = use_state({}) def handle_term_to_add_change(event): set_term_to_add(event["target"]["value"]) def handle_definition_to_add_change(event): set_definition_to_add(event["target"]["value"]) def handle_add_click(event): if term_to_add and definition_to_add: set_all_terms({**all_terms, term_to_add: definition_to_add}) set_term_to_add(None) set_definition_to_add(None) def make_delete_click_handler(term_to_delete): def handle_click(event): set_all_terms({t: d for t, d in all_terms.items() if t != term_to_delete}) return handle_click return html.div( html.button({"onClick": handle_add_click}, "add term"), html.label( "Term: ", html.input({"value": term_to_add, "onChange": handle_term_to_add_change}), ), html.label( "Definition: ", html.input( { "value": definition_to_add, "onChange": handle_definition_to_add_change, } ), ), html.hr(), [ html.div( html.button( {"onClick": make_delete_click_handler(term)}, "delete term" ), html.dt(term), html.dd(definition), key=term, ) for term, definition in all_terms.items() ], )
def Gallery(): index, set_index = hooks.use_state(0) def handle_click(event): set_index(index + 1) bounded_index = index % len(sculpture_data) sculpture = sculpture_data[bounded_index] alt = sculpture["alt"] artist = sculpture["artist"] description = sculpture["description"] name = sculpture["name"] url = sculpture["url"] return html.div( html.button({"onClick": handle_click}, "Next"), html.h2(name, " by ", artist), html.p(f"({bounded_index + 1} of {len(sculpture_data)})"), html.img({ "src": url, "alt": alt, "style": { "height": "200px" } }), html.p(description), )
def Root(): toggle, toggle_type.current = use_toggle(True) handler = element_static_handler.use(lambda: None) if toggle: return html.div(html.button({"onEvent": handler})) else: return html.div(SomeComponent())
def ArtistList(): artists, set_artists = use_state( ["Marta Colvin Andrade", "Lamidi Olonade Fakeye", "Louise Nevelson"]) def handle_sort_click(event): set_artists(list(sorted(artists))) def handle_reverse_click(event): set_artists(list(reversed(artists))) return html.div( html.h1("Inspiring sculptors:"), html.button({"onClick": handle_sort_click}, "sort"), html.button({"onClick": handle_reverse_click}, "reverse"), html.ul([html.li(name, key=name) for name in artists]), )
def Counter(): number, set_number = use_state(0) def handle_click(event): set_number(number + 5) print(number) return html.div( html.h1(number), html.button({"onClick": handle_click}, "Increment"), )
def Counter(): number, set_number = use_state(0) async def handle_click(event): await asyncio.sleep(3) set_number(lambda old_number: old_number + 1) return html.div( html.h1(number), html.button({"onClick": handle_click}, "Increment"), )
def Scene(): position, set_position = use_state(Position(100, 100, 0)) return html.div( {"style": {"width": "225px"}}, html.div( { "style": { "width": "200px", "height": "200px", "backgroundColor": "slategray", } }, image( "png", CHARACTER_IMAGE, { "style": { "position": "relative", "left": f"{position.x}px", "top": f"{position.y}.px", "transform": f"rotate({position.angle}deg) scale(2, 2)", } }, ), ), html.button({"onClick": lambda e: set_position(translate(x=-10))}, "Move Left"), html.button({"onClick": lambda e: set_position(translate(x=10))}, "Move Right"), html.button({"onClick": lambda e: set_position(translate(y=-10))}, "Move Up"), html.button({"onClick": lambda e: set_position(translate(y=10))}, "Move Down"), html.button({"onClick": lambda e: set_position(rotate(-30))}, "Rotate Left"), html.button({"onClick": lambda e: set_position(rotate(30))}, "Rotate Right"), )
def Counter(): number, set_number = use_state(0) async def handle_click(event): set_number(number + 5) print("about to print...") await asyncio.sleep(3) print(number) return html.div( html.h1(number), html.button({"onClick": handle_click}, "Increment"), )
def Parent(): state, set_state = use_state(0) return html.div( html.button( { "onClick": set_child_key_num.use(lambda: set_state(state + 1)) }, "click me", ), Child("some-key"), Child(f"key-{state}"), )
def Gallery(): index, set_index = hooks.use_state(0) show_more, set_show_more = hooks.use_state(False) def handle_next_click(event): set_index(index + 1) def handle_more_click(event): set_show_more(not show_more) bounded_index = index % len(sculpture_data) sculpture = sculpture_data[bounded_index] alt = sculpture["alt"] artist = sculpture["artist"] description = sculpture["description"] name = sculpture["name"] url = sculpture["url"] return html.div( html.button({"onClick": handle_next_click}, "Next"), html.h2(name, " by ", artist), html.p(f"({bounded_index + 1} or {len(sculpture_data)})"), html.img({ "src": url, "alt": alt, "style": { "height": "200px" } }), html.div( html.button( {"onClick": handle_more_click}, f"{'Show' if show_more else 'Hide'} details", ), (html.p(description) if show_more else ""), ), )
def App(): recipient, set_recipient = use_state("Alice") message, set_message = use_state("") @event(prevent_default=True) async def handle_submit(event): set_message("") print("About to send message...") await asyncio.sleep(5) print(f"Sent '{message}' to {recipient}") return html.form( { "onSubmit": handle_submit, "style": { "display": "inline-grid" } }, html.label( "To: ", html.select( { "value": recipient, "onChange": lambda event: set_recipient(event["target"]["value"]), }, html.option({"value": "Alice"}, "Alice"), html.option({"value": "Bob"}, "Bob"), ), ), html.input({ "type": "text", "placeholder": "Your message...", "value": message, "onChange": lambda event: set_message(event["target"]["value"]), }), html.button({"type": "submit"}, "Send"), )
def DivInDiv(): stop_propagatation, set_stop_propagatation = hooks.use_state(True) inner_count, set_inner_count = hooks.use_state(0) outer_count, set_outer_count = hooks.use_state(0) div_in_div = html.div( { "onClick": lambda event: set_outer_count(outer_count + 1), "style": { "height": "100px", "width": "100px", "backgroundColor": "red" }, }, html.div( { "onClick": event( lambda event: set_inner_count(inner_count + 1), stop_propagation=stop_propagatation, ), "style": { "height": "50px", "width": "50px", "backgroundColor": "blue" }, }, ), ) return html.div( html.button( { "onClick": lambda event: set_stop_propagatation(not stop_propagatation) }, "Toggle Propogation", ), html.pre(f"Will propagate: {not stop_propagatation}"), html.pre(f"Inner click count: {inner_count}"), html.pre(f"Outer click count: {outer_count}"), div_in_div, )
def CounterList(): counters, set_counters = use_state([0, 0, 0]) def make_increment_click_handler(index): def handle_click(event): new_value = counters[index] + 1 set_counters(counters[:index] + [new_value] + counters[index + 1 :]) return handle_click return html.ul( [ html.li( count, html.button({"onClick": make_increment_click_handler(index)}, "+1"), key=index, ) for index, count in enumerate(counters) ] )
def ArtistList(): artist_to_add, set_artist_to_add = use_state("") artists, set_artists = use_state([]) def handle_change(event): set_artist_to_add(event["target"]["value"]) def handle_click(event): if artist_to_add and artist_to_add not in artists: set_artists([*artists, artist_to_add]) set_artist_to_add("") return html.div( html.h1("Inspiring sculptors:"), html.input({ "value": artist_to_add, "onChange": handle_change }), html.button({"onClick": handle_click}, "add"), html.ul([html.li(name, key=name) for name in artists]), )
def Root(): event_name, set_event_name.current = use_state("first") return html.button({ event_name: event_handler.use(lambda: did_trigger.set_current(True)) })
def SomeComponent(): handler = component_static_handler.use(lambda: None) return html.button({"onAnotherEvent": handler})
def Button(): return html.button("I don't do anything yet")
def PrintButton(display_text, message_text): def handle_event(event): print(message_text) return html.button({"onClick": handle_event}, display_text)
def ButtonWithDelay(message, delay): async def handle_event(event): await asyncio.sleep(delay) print(message) return html.button({"onClick": handle_event}, message)
def Button(): def handle_event(event): print(event) return html.button({"onClick": handle_event}, "Click me!")
def Button(display_text, on_click): return html.button({"onClick": on_click}, display_text)