watt42_viewlib/sample.py

import json
import panel
from random import randint
from typing import Any

from watt42_viewlib import attach_w42_state

w42_state = panel.rx(None)
attach_w42_state(rx_var=w42_state, system_id="fb2b91ce-383e-4356-96b3-b6405dacb353")

state_as_text = panel.bind(lambda s: f"W42 State:\n\n```\n{json.dumps(s, indent=2)}\n```\n\nReplace this with some awesome visuals", w42_state)

state_pane = panel.pane.Markdown(state_as_text, sizing_mode='stretch_width')

value = w42_state.rx.value

multiplier = panel.widgets.IntSlider(name='Multiplier', start=1, end=10, step=1, value=1)

def value_display(state: dict[str, Any], multiplier: int) -> str:
    if state and 'value' in state:
        return f"Current W42 State Value times multiplier: {state['value'] * multiplier}"
    return "Current W42 State Value: N/A"

def value_or_zero(state: dict[str, Any]) -> int:
    if state and 'value' in state:
        return state['value']
    return 0

def array_from_value(x: int) -> list[int]:
    return [x * randint(1, 20) for _ in range(25)]

def times2(x: int) -> int:
    return x * 2

times2_rx = panel.rx(times2)(panel.rx(value_or_zero)(w42_state))

markdown_rx = panel.rx(lambda v: f"## Value times 2 is: {v}, array={array_from_value(v)}")(times2_rx)

array_rx = panel.rx(array_from_value)(panel.rx(value_or_zero)(w42_state))

echart_bar_rx = panel.pane.ECharts(
    panel.rx(lambda arr: {
        'xAxis': {
            'type': 'category',
            'data': [f'Item {i+1}' for i in range(len(arr))]
        },
        'yAxis': {
            'type': 'value'
        },
        'series': [{
            'data': arr,
            'type': 'bar'
        }]
    })(array_rx),
    sizing_mode='stretch_width',
    height=400
)

_ = panel.template.FastListTemplate(
    title="Sample W42 View App",
    sidebar=[panel.pane.Markdown("This is a sample sidebar.")],
    main=[
        panel.pane.Markdown("# Welcome to the Main Content Area"),
        echart_bar_rx,
        # state_pane, panel.pane.Markdown(f"Current W42 State Value: {value}"),
        panel.ReactiveExpr(panel.rx(value_display)(w42_state, multiplier), widget_location='top'),
        panel.pane.Markdown(markdown_rx),
    ],
).servable()