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/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
* All rights reserved.
*
* This source code is licensed under the license found in the
* LICENSE file in the root directory of this source tree.
*/
import {
ComponentProps,
Streamlit,
withStreamlitConnection,
} from "streamlit-component-lib"
import React, { useEffect, useMemo, useRef, useState } from 'react';
import * as d3 from 'd3';
import {
Point,
} from './common';
import './LlmViewer.css';
export const renderParams = {
verticalGap: 24,
horizontalGap: 24,
itemSize: 8,
}
interface Item {
index: number
text: string
temperature: number
}
const Selector = ({ args }: ComponentProps) => {
const items: Item[] = args["items"]
const preselected_index: number | null = args["preselected_index"]
const n = items.length
const [selection, setSelection] = useState<number | null>(null)
// Ensure the preselected element has effect only when it's a new data.
var args_json = JSON.stringify(args)
useEffect(() => {
setSelection(preselected_index)
Streamlit.setComponentValue(preselected_index)
}, [args_json, preselected_index]);
const handleItemClick = (index: number) => {
setSelection(index)
Streamlit.setComponentValue(index)
}
const [xScale, yScale] = useMemo(() => {
const x = d3.scaleLinear()
.domain([0, 1])
.range([0, renderParams.horizontalGap])
const y = d3.scaleLinear()
.domain([0, n - 1])
.range([0, renderParams.verticalGap * (n - 1)])
return [x, y]
}, [n])
const itemCoords: Point[] = useMemo(() => {
return Array.from(Array(n).keys()).map(i => ({
x: xScale(0.5),
y: yScale(i + 0.5),
}))
}, [n, xScale, yScale])
var hasTemperature = false
if (n > 0) {
var t = items[0].temperature
hasTemperature = (t !== null && t !== undefined)
}
const colorScale = useMemo(() => {
var min_t = 0.0
var max_t = 1.0
if (hasTemperature) {
min_t = items[0].temperature
max_t = items[0].temperature
for (var i = 0; i < n; i++) {
const t = items[i].temperature
min_t = Math.min(min_t, t)
max_t = Math.max(max_t, t)
}
}
const norm = d3.scaleLinear([min_t, max_t], [0.0, 1.0])
const colorScale = d3.scaleSequential(d3.interpolateYlGn);
return d3.scaleSequential(value => colorScale(norm(value)))
}, [items, hasTemperature, n])
const totalW = 100
const totalH = yScale(n)
useEffect(() => {
Streamlit.setFrameHeight(totalH)
}, [totalH])
const svgRef = useRef(null);
useEffect(() => {
const svg = d3.select(svgRef.current)
svg.selectAll('*').remove()
const getItemClass = (index: number) => {
var style = 'selectable-item '
style += index === selection ? 'selection' : 'selector-item'
return style
}
const getItemColor = (item: Item) => {
var t = item.temperature ?? 0.0
return item.index === selection ? 'orange' : colorScale(t)
}
var icons = svg
.selectAll('items')
.data(Array.from(Array(n).keys()))
.enter()
.append('circle')
.attr('cx', (i) => itemCoords[i].x)
.attr('cy', (i) => itemCoords[i].y)
.attr('r', renderParams.itemSize / 2)
.on('click', (event: PointerEvent, i) => {
handleItemClick(items[i].index)
})
.attr('class', (i) => getItemClass(items[i].index))
if (hasTemperature) {
icons.style('fill', (i) => getItemColor(items[i]))
}
svg
.selectAll('labels')
.data(Array.from(Array(n).keys()))
.enter()
.append('text')
.attr('x', (i) => itemCoords[i].x + renderParams.horizontalGap / 2)
.attr('y', (i) => itemCoords[i].y)
.attr('text-anchor', 'left')
.attr('alignment-baseline', 'middle')
.text((i) => items[i].text)
}, [
items,
n,
itemCoords,
selection,
colorScale,
hasTemperature,
])
return <svg ref={svgRef} width={totalW} height={totalH}></svg>
}
export default withStreamlitConnection(Selector)
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