mirror of
https://github.com/bitcoinresearchkit/brk.git
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1532 lines
43 KiB
JavaScript
1532 lines
43 KiB
JavaScript
import {
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createChart as untypedLcCreateChart,
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CandlestickSeries,
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HistogramSeries,
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LineSeries,
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BaselineSeries,
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// } from "../modules/lightweight-charts/5.1.0/dist/lightweight-charts.standalone.development.mjs";
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} from "../modules/lightweight-charts/5.1.0/dist/lightweight-charts.standalone.production.mjs";
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import { createLegend } from "./legend.js";
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import { capture } from "./capture.js";
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import { colors } from "./colors.js";
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import { createRadios, createSelect } from "../utils/dom.js";
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import { createPersistedValue } from "../utils/persisted.js";
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import { onChange as onThemeChange } from "../utils/theme.js";
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import { throttle, debounce } from "../utils/timing.js";
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import { serdeBool, serdeChartableIndex } from "../utils/serde.js";
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import { stringToId, numberToShortUSFormat } from "../utils/format.js";
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import { style } from "../utils/elements.js";
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/**
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* @typedef {_ISeriesApi<LCSeriesType>} ISeries
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* @typedef {_ISeriesApi<'Candlestick'>} CandlestickISeries
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* @typedef {_ISeriesApi<'Histogram'>} HistogramISeries
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* @typedef {_ISeriesApi<'Line'>} LineISeries
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* @typedef {_ISeriesApi<'Baseline'>} BaselineISeries
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*
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* @typedef {_LineSeriesPartialOptions} LineSeriesPartialOptions
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* @typedef {_HistogramSeriesPartialOptions} HistogramSeriesPartialOptions
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* @typedef {_BaselineSeriesPartialOptions} BaselineSeriesPartialOptions
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* @typedef {_CandlestickSeriesPartialOptions} CandlestickSeriesPartialOptions
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*/
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/**
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* @template T
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* @typedef {Object} Series
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* @property {string} key
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* @property {string} id
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* @property {number} paneIndex
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* @property {PersistedValue<boolean>} active
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* @property {(value: boolean) => void} setActive
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* @property {() => void} show
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* @property {() => void} hide
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* @property {(order: number) => void} setOrder
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* @property {() => void} highlight
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* @property {() => void} tame
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* @property {() => boolean} hasData
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* @property {() => void} [fetch]
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* @property {string | null} url
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* @property {() => readonly T[]} getData
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* @property {(data: T) => void} update
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* @property {VoidFunction} remove
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*/
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/**
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* @typedef {Series<any>} AnySeries
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*/
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/**
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* @typedef {_SingleValueData} SingleValueData
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* @typedef {_CandlestickData} CandlestickData
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* @typedef {_LineData} LineData
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* @typedef {_BaselineData} BaselineData
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* @typedef {_HistogramData} HistogramData
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*
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* @typedef {Object} Legend
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* @property {HTMLLegendElement} element
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* @property {function({ series: AnySeries, name: string, order: number, colors: Color[] }): void} addOrReplace
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* @property {function(number): void} removeFrom
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*/
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const lineWidth = /** @type {any} */ (1.5);
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/**
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* @param {Object} args
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* @param {string} args.id
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* @param {HTMLElement} args.parent
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* @param {BrkClient} args.brk
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* @param {true} [args.fitContent]
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*/
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export function createChart({
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parent,
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id: chartId,
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brk,
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fitContent,
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}) {
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const baseUrl = brk.baseUrl.replace(/\/$/, "");
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/** @param {ChartableIndex} idx */
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const getTimeEndpoint = (idx) =>
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idx === "height"
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? brk.metrics.blocks.time.timestampMonotonic.by[idx]
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: brk.metrics.blocks.time.timestamp.by[idx];
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const index = {
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/** @type {Set<(index: ChartableIndex) => void>} */
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onChange: new Set(),
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get() {
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return serdeChartableIndex.deserialize(index.name.value);
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},
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name: createPersistedValue({
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defaultValue: /** @type {ChartableIndexName} */ ("date"),
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storageKey: "chart-index",
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urlKey: "i",
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serialize: (v) => v,
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deserialize: (s) => /** @type {ChartableIndexName} */ (s),
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onChange: () => {
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range.set(null);
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index.onChange.forEach((cb) => cb(index.get()));
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},
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}),
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};
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// Range state: localStorage stores all ranges per-index, URL stores current range only
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/** @typedef {{ from: number, to: number }} Range */
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const ranges = createPersistedValue({
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defaultValue: /** @type {Record<string, Range>} */ ({}),
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storageKey: "chart-ranges",
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serialize: JSON.stringify,
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deserialize: JSON.parse,
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});
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const range = createPersistedValue({
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defaultValue: /** @type {Range | null} */ (null),
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urlKey: "r",
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serialize: (v) => (v ? `${v.from.toFixed(2)}_${v.to.toFixed(2)}` : ""),
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deserialize: (s) => {
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if (!s) return null;
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const [from, to] = s.split("_").map(Number);
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return !isNaN(from) && !isNaN(to) ? { from, to } : null;
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},
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});
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/** @returns {Range | null} */
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const getRange = () => range.value ?? ranges.value[index.name.value] ?? null;
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/** @param {Range} value */
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const setRange = (value) => {
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ranges.set({ ...ranges.value, [index.name.value]: value });
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range.set(value);
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};
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const legends = {
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top: createLegend(),
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bottom: createLegend(),
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};
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const elements = {
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root: document.createElement("div"),
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chart: document.createElement("div"),
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setup() {
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elements.root.classList.add("chart");
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elements.chart.classList.add("lightweight-chart");
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parent.append(elements.root);
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elements.root.append(legends.top.element);
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elements.root.append(elements.chart);
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elements.root.append(legends.bottom.element);
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},
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};
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elements.setup();
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const ichart = /** @type {CreateLCChart} */ (untypedLcCreateChart)(
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elements.chart,
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/** @satisfies {DeepPartial<ChartOptions>} */ ({
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autoSize: true,
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layout: {
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fontFamily: style.fontFamily,
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background: { color: "transparent" },
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attributionLogo: false,
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panes: {
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enableResize: false,
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},
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},
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grid: {
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vertLines: { visible: false },
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horzLines: { visible: false },
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},
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rightPriceScale: {
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borderVisible: false,
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},
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timeScale: {
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borderVisible: false,
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enableConflation: true,
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// conflationThresholdFactor: 8,
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...(fitContent
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? {
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minBarSpacing: 0.001,
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}
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: {}),
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},
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localization: {
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priceFormatter: numberToShortUSFormat,
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locale: "en-us",
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},
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crosshair: {
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mode: 3,
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},
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...(fitContent
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? {
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handleScale: false,
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handleScroll: false,
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}
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: {}),
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// ..._options,
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}),
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);
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// Takes a bit more space sometimes but it's better UX than having the scale being resized on option change
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ichart.priceScale("right").applyOptions({
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minimumWidth: 80,
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});
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ichart.panes().at(0)?.setStretchFactor(1);
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/** @typedef {(visibleBarsCount: number) => void} ZoomChangeCallback */
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const initialRange = getRange();
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if (initialRange) {
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ichart.timeScale().setVisibleLogicalRange(initialRange);
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}
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let visibleBarsCount = initialRange
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? initialRange.to - initialRange.from
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: Infinity;
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/** @type {Set<ZoomChangeCallback>} */
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const onZoomChange = new Set();
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ichart.timeScale().subscribeVisibleLogicalRangeChange(
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throttle((range) => {
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if (!range) return;
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const count = range.to - range.from;
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if (count === visibleBarsCount) return;
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visibleBarsCount = count;
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onZoomChange.forEach((cb) => cb(count));
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}, 100),
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);
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// Debounced range persistence
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ichart.timeScale().subscribeVisibleLogicalRangeChange(
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debounce((range) => {
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if (range && range.from < range.to) {
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setRange({ from: range.from, to: range.to });
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}
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}, 100),
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);
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function applyColors() {
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const defaultColor = colors.default();
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const offColor = colors.gray();
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const borderColor = colors.border();
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ichart.applyOptions({
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layout: {
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textColor: offColor,
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panes: {
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separatorColor: borderColor,
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},
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},
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crosshair: {
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horzLine: {
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color: offColor,
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labelBackgroundColor: defaultColor,
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},
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vertLine: {
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color: offColor,
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labelBackgroundColor: defaultColor,
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},
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},
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});
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}
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applyColors();
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const removeThemeListener = onThemeChange(applyColors);
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/** @type {Partial<Record<ChartableIndex, number>>} */
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const minBarSpacingByIndex = {
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monthindex: 1,
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quarterindex: 2,
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semesterindex: 3,
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yearindex: 6,
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decadeindex: 60,
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};
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/** @param {ChartableIndex} index */
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function applyIndexSettings(index) {
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const minBarSpacing = minBarSpacingByIndex[index] ?? 0.5;
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ichart.applyOptions({
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timeScale: {
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timeVisible: index === "height",
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...(!fitContent
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? {
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minBarSpacing,
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}
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: {}),
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},
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});
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}
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applyIndexSettings(index.get());
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index.onChange.add(applyIndexSettings);
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// Periodic refresh of active series data
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const refreshInterval = setInterval(() => serieses.refreshAll(), 30_000);
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if (fitContent) {
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new ResizeObserver(() => ichart.timeScale().fitContent()).observe(
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elements.chart,
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);
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}
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const fieldsets = {
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/** @type {Map<number, Map<string, { id: string, position: string, createChild: (pane: IPaneApi<Time>) => HTMLElement }>>} */
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configs: new Map(),
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/**
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* @param {number} configPaneIndex
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* @param {number} [targetPaneIndex]
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*/
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createForPane(configPaneIndex, targetPaneIndex = configPaneIndex) {
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const pane = ichart.panes().at(targetPaneIndex);
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if (!pane) return;
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const parent = pane.getHTMLElement()?.children?.item(1)?.firstChild;
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if (!parent) return;
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const configs = this.configs.get(configPaneIndex);
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if (!configs) return;
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for (const { id, position, createChild } of configs.values()) {
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/** @type {Element} */ (parent)
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.querySelectorAll(`[data-position="${position}"]`)
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.forEach((el) => el.remove());
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const fieldset = document.createElement("fieldset");
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fieldset.dataset.size = "xs";
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fieldset.dataset.position = position;
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fieldset.id = `${id}-${configPaneIndex}`;
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parent.appendChild(fieldset);
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fieldset.append(createChild(pane));
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}
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},
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/**
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* @param {Object} args
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* @param {string} args.id
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* @param {number} args.paneIndex
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* @param {"nw" | "ne" | "se" | "sw"} args.position
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* @param {(pane: IPaneApi<Time>) => HTMLElement} args.createChild
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*/
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addIfNeeded({ paneIndex, id, position, createChild }) {
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let configs = this.configs.get(paneIndex);
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if (!configs) {
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configs = new Map();
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this.configs.set(paneIndex, configs);
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}
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configs.set(id, { id, position, createChild });
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},
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};
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const panes = {
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/** @type {Map<number, Map<AnySeries, ISeries[]>>} */
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seriesByHome: new Map(),
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pendingVisibilityCheck: false,
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/** @param {number} homePane */
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isAllHidden(homePane) {
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const map = this.seriesByHome.get(homePane);
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return !map || [...map.keys()].every((s) => !s.active.value);
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},
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/**
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* @param {number} homePane
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* @param {number} targetPane
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*/
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moveTo(homePane, targetPane) {
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const map = this.seriesByHome.get(homePane);
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if (!map) return;
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for (const iseries of map.values()) {
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for (const is of iseries) {
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if (is.getPane().paneIndex() !== targetPane) {
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is.moveToPane(targetPane);
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}
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}
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}
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},
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/**
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* @param {number} paneIndex
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* @param {VoidFunction} callback
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* @param {number} [retries]
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*/
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whenReady(paneIndex, callback, retries = 10) {
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const pane = ichart.panes().at(paneIndex);
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const parent = pane?.getHTMLElement()?.children?.item(1)?.firstChild;
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if (parent) {
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callback();
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} else if (retries > 0) {
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requestAnimationFrame(() =>
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this.whenReady(paneIndex, callback, retries - 1),
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);
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}
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},
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updateVisibility() {
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const pane0Hidden = this.isAllHidden(0);
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const pane1Hidden = this.isAllHidden(1);
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const bothVisible = !pane0Hidden && !pane1Hidden;
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this.moveTo(1, bothVisible ? 1 : 0);
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if (bothVisible) {
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this.whenReady(1, () => {
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fieldsets.createForPane(0);
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fieldsets.createForPane(1);
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});
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} else {
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this.whenReady(0, () => {
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if (pane0Hidden && !pane1Hidden) {
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fieldsets.createForPane(1, 0);
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} else {
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fieldsets.createForPane(0);
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}
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});
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}
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},
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/**
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* @param {number} paneIndex
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* @param {AnySeries} series
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* @param {ISeries[]} iseries
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*/
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register(paneIndex, series, iseries) {
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let paneMap = this.seriesByHome.get(paneIndex);
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if (!paneMap) {
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paneMap = new Map();
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this.seriesByHome.set(paneIndex, paneMap);
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}
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paneMap.set(series, iseries);
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if (!this.pendingVisibilityCheck) {
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this.pendingVisibilityCheck = true;
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requestAnimationFrame(() => {
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this.pendingVisibilityCheck = false;
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this.updateVisibility();
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});
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}
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},
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};
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const serieses = {
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/** @type {Map<string, PersistedValue<boolean>>} */
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activeStates: new Map(),
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/** @type {Map<string, Set<AnySeries>>} */
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byKey: new Map(),
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refreshAll() {
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serieses.byKey.forEach((set) => {
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set.forEach((s) => {
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if (s.active.value) s.fetch?.();
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});
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});
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},
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/**
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* @param {Object} args
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* @param {string} args.name
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* @param {number} args.order
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* @param {Color[]} args.colors
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* @param {AnyMetricPattern} args.metric
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* @param {number} args.paneIndex
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* @param {boolean} [args.defaultActive]
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* @param {(order: number) => void} args.setOrder
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* @param {() => void} args.show
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* @param {() => void} args.hide
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* @param {() => void} args.highlight
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* @param {() => void} args.tame
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* @param {() => readonly any[]} args.getData
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* @param {(data: any[]) => void} args.setData
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* @param {(data: any) => void} args.update
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* @param {() => void} args.onRemove
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*/
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create({
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metric,
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name,
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order,
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paneIndex,
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defaultActive,
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colors,
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setOrder,
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show,
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hide,
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highlight,
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tame,
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getData,
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setData,
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update,
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onRemove,
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}) {
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const key = stringToId(name);
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const id = `${key}-${paneIndex}`;
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// Reuse existing state if same name (links legends across panes)
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const existingActive = serieses.activeStates.get(key);
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const active =
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existingActive ??
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createPersistedValue({
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defaultValue: defaultActive ?? true,
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storageKey: id,
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urlKey: key,
|
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...serdeBool,
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});
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if (!existingActive) serieses.activeStates.set(key, active);
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setOrder(-order);
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active.value ? show() : hide();
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let hasData = false;
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let lastTime = -Infinity;
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|
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/** @type {VoidFunction | null} */
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let _fetch = null;
|
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|
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/** @type {AnySeries} */
|
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const series = {
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active,
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setActive(value) {
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const wasActive = active.value;
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active.set(value);
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serieses.byKey.get(key)?.forEach((s) => {
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value ? s.show() : s.hide();
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});
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document.querySelectorAll(`[data-series="${key}"]`).forEach((el) => {
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if (el instanceof HTMLInputElement && el.type === "checkbox") {
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el.checked = value;
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}
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});
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if (value && !wasActive) _fetch?.();
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panes.updateVisibility();
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},
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setOrder,
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show,
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hide,
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highlight,
|
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tame,
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hasData: () => hasData,
|
|
fetch: () => _fetch?.(),
|
|
key,
|
|
id,
|
|
paneIndex,
|
|
url: null,
|
|
getData,
|
|
update,
|
|
remove() {
|
|
onRemove();
|
|
serieses.byKey.get(key)?.delete(series);
|
|
panes.seriesByHome.get(paneIndex)?.delete(series);
|
|
},
|
|
};
|
|
|
|
// Register series for cross-pane linking
|
|
let keySet = serieses.byKey.get(key);
|
|
if (!keySet) {
|
|
keySet = new Set();
|
|
serieses.byKey.set(key, keySet);
|
|
}
|
|
keySet.add(series);
|
|
|
|
/** @param {ChartableIndex} idx */
|
|
function setupIndexEffect(idx) {
|
|
// Reset data state for new index
|
|
hasData = false;
|
|
lastTime = -Infinity;
|
|
_fetch = null;
|
|
|
|
const _valuesEndpoint = metric.by[idx];
|
|
// Gracefully skip - series may be about to be removed by option change
|
|
if (!_valuesEndpoint) return;
|
|
const valuesEndpoint = _valuesEndpoint;
|
|
|
|
series.url = `${baseUrl}${valuesEndpoint.path}`;
|
|
|
|
(paneIndex ? legends.bottom : legends.top).addOrReplace({
|
|
series,
|
|
name,
|
|
colors,
|
|
order,
|
|
});
|
|
|
|
/**
|
|
* @param {number[]} indexes
|
|
* @param {(number | null | [number, number, number, number])[]} values
|
|
*/
|
|
function processData(indexes, values) {
|
|
const length = Math.min(indexes.length, values.length);
|
|
|
|
// Find start index for processing
|
|
let startIdx = 0;
|
|
if (hasData) {
|
|
// Binary search to find first index where time >= lastTime
|
|
let lo = 0;
|
|
let hi = length;
|
|
while (lo < hi) {
|
|
const mid = (lo + hi) >>> 1;
|
|
if (indexes[mid] < lastTime) {
|
|
lo = mid + 1;
|
|
} else {
|
|
hi = mid;
|
|
}
|
|
}
|
|
startIdx = lo;
|
|
if (startIdx >= length) return; // No new data
|
|
}
|
|
|
|
/**
|
|
* @param {number} i
|
|
* @returns {LineData | CandlestickData}
|
|
*/
|
|
function buildDataPoint(i) {
|
|
const time = /** @type {Time} */ (indexes[i]);
|
|
const v = values[i];
|
|
if (v === null) {
|
|
return { time, value: NaN };
|
|
} else if (typeof v === "number") {
|
|
return { time, value: v };
|
|
} else {
|
|
if (!Array.isArray(v) || v.length !== 4)
|
|
throw new Error(`Expected OHLC tuple, got: ${v}`);
|
|
const [open, high, low, close] = v;
|
|
return { time, open, high, low, close };
|
|
}
|
|
}
|
|
|
|
if (!hasData) {
|
|
// Initial load: build full array
|
|
const data = /** @type {LineData[] | CandlestickData[]} */ (
|
|
Array.from({ length })
|
|
);
|
|
|
|
let prevTime = null;
|
|
let timeOffset = 0;
|
|
|
|
for (let i = 0; i < length; i++) {
|
|
const time = indexes[i];
|
|
const sameTime = prevTime === time;
|
|
if (sameTime) {
|
|
timeOffset += 1;
|
|
}
|
|
const offsetedI = i - timeOffset;
|
|
const point = buildDataPoint(i);
|
|
if (sameTime && "open" in point) {
|
|
const prev = /** @type {CandlestickData} */ (data[offsetedI]);
|
|
point.open = prev.open;
|
|
point.high = Math.max(prev.high, point.high);
|
|
point.low = Math.min(prev.low, point.low);
|
|
}
|
|
data[offsetedI] = point;
|
|
prevTime = time;
|
|
}
|
|
|
|
data.length -= timeOffset;
|
|
|
|
setData(data);
|
|
hasData = true;
|
|
lastTime = /** @type {number} */ (data.at(-1)?.time) ?? -Infinity;
|
|
|
|
// Restore saved range or use defaults
|
|
const savedRange = getRange();
|
|
if (savedRange) {
|
|
ichart.timeScale().setVisibleLogicalRange({
|
|
from: savedRange.from,
|
|
to: savedRange.to,
|
|
});
|
|
} else if (fitContent) {
|
|
ichart.timeScale().fitContent();
|
|
} else if (
|
|
(minBarSpacingByIndex[idx] ?? 0) >=
|
|
/** @type {number} */ (minBarSpacingByIndex.quarterindex)
|
|
) {
|
|
ichart
|
|
.timeScale()
|
|
.setVisibleLogicalRange({ from: -1, to: data.length });
|
|
}
|
|
// Delay until chart has applied the range
|
|
requestAnimationFrame(() => blueprints.onDataLoaded?.());
|
|
} else {
|
|
// Incremental update: only process new data points
|
|
for (let i = startIdx; i < length; i++) {
|
|
const point = buildDataPoint(i);
|
|
update(point);
|
|
lastTime = /** @type {number} */ (point.time);
|
|
}
|
|
}
|
|
}
|
|
|
|
async function fetchAndProcess() {
|
|
const [timeResult, valuesResult] = await Promise.all([
|
|
getTimeEndpoint(idx).slice(-10000).fetch(),
|
|
valuesEndpoint.slice(-10000).fetch(),
|
|
]);
|
|
if (timeResult?.data?.length && valuesResult?.data?.length) {
|
|
processData(timeResult.data, valuesResult.data);
|
|
}
|
|
}
|
|
|
|
_fetch = fetchAndProcess;
|
|
|
|
// Initial fetch if active
|
|
if (active.value) {
|
|
fetchAndProcess();
|
|
}
|
|
}
|
|
|
|
setupIndexEffect(index.get());
|
|
// Series don't subscribe to index.onChange - panes recreates them on index change
|
|
// index.onChange.add(setupIndexEffect);
|
|
// _cleanup = () => index.onChange.delete(setupIndexEffect);
|
|
|
|
return series;
|
|
},
|
|
|
|
/**
|
|
* @param {Object} args
|
|
* @param {string} args.name
|
|
* @param {number} args.order
|
|
* @param {AnyMetricPattern} args.metric
|
|
* @param {number} [args.paneIndex]
|
|
* @param {[Color, Color]} [args.colors] - [upColor, downColor] for legend
|
|
* @param {boolean} [args.defaultActive]
|
|
* @param {CandlestickSeriesPartialOptions} [args.options]
|
|
*/
|
|
addCandlestick({
|
|
metric,
|
|
name,
|
|
order,
|
|
paneIndex = 0,
|
|
colors: customColors,
|
|
defaultActive,
|
|
options,
|
|
}) {
|
|
const upColor = customColors?.[0] ?? colors.green;
|
|
const downColor = customColors?.[1] ?? colors.red;
|
|
|
|
/** @type {CandlestickISeries} */
|
|
const candlestickISeries = /** @type {any} */ (
|
|
ichart.addSeries(
|
|
/** @type {SeriesDefinition<'Candlestick'>} */ (CandlestickSeries),
|
|
{
|
|
visible: false,
|
|
borderVisible: false,
|
|
...options,
|
|
},
|
|
paneIndex,
|
|
)
|
|
);
|
|
|
|
/** @type {LineISeries} */
|
|
const lineISeries = /** @type {any} */ (
|
|
ichart.addSeries(
|
|
/** @type {SeriesDefinition<'Line'>} */ (LineSeries),
|
|
{
|
|
visible: false,
|
|
lineWidth,
|
|
priceLineVisible: true,
|
|
},
|
|
paneIndex,
|
|
)
|
|
);
|
|
|
|
let active = defaultActive !== false;
|
|
let highlighted = true;
|
|
|
|
/** @param {number} barCount */
|
|
const shouldShowLine = (barCount) => barCount > 500;
|
|
let showLine = shouldShowLine(visibleBarsCount);
|
|
|
|
function update() {
|
|
candlestickISeries.applyOptions({
|
|
visible: active && !showLine,
|
|
lastValueVisible: highlighted,
|
|
upColor: upColor.highlight(highlighted),
|
|
downColor: downColor.highlight(highlighted),
|
|
wickUpColor: upColor.highlight(highlighted),
|
|
wickDownColor: downColor.highlight(highlighted),
|
|
});
|
|
lineISeries.applyOptions({
|
|
visible: active && showLine,
|
|
lastValueVisible: highlighted,
|
|
color: colors.default.highlight(highlighted),
|
|
});
|
|
}
|
|
|
|
/** @type {ZoomChangeCallback} */
|
|
function handleZoom(count) {
|
|
if (!series.hasData()) return; // Ignore zoom changes until data is ready
|
|
const newShowLine = shouldShowLine(count);
|
|
if (newShowLine === showLine) return;
|
|
showLine = newShowLine;
|
|
update();
|
|
}
|
|
onZoomChange.add(handleZoom);
|
|
const removeSeriesThemeListener = onThemeChange(update);
|
|
|
|
const series = serieses.create({
|
|
colors: [upColor, downColor],
|
|
name,
|
|
order,
|
|
paneIndex,
|
|
defaultActive,
|
|
metric,
|
|
setOrder(order) {
|
|
candlestickISeries.setSeriesOrder(order);
|
|
lineISeries.setSeriesOrder(order);
|
|
},
|
|
show() {
|
|
if (active) return;
|
|
active = true;
|
|
update();
|
|
},
|
|
hide() {
|
|
if (!active) return;
|
|
active = false;
|
|
update();
|
|
},
|
|
highlight() {
|
|
if (highlighted) return;
|
|
highlighted = true;
|
|
update();
|
|
},
|
|
tame() {
|
|
if (!highlighted) return;
|
|
highlighted = false;
|
|
update();
|
|
},
|
|
setData: (data) => {
|
|
candlestickISeries.setData(data);
|
|
const lineData = data.map((d) => ({ time: d.time, value: d.close }));
|
|
lineISeries.setData(lineData);
|
|
requestAnimationFrame(() => {
|
|
const range = ichart.timeScale().getVisibleLogicalRange();
|
|
if (range) {
|
|
showLine = shouldShowLine(range.to - range.from);
|
|
}
|
|
update();
|
|
});
|
|
},
|
|
update: (data) => {
|
|
candlestickISeries.update(data);
|
|
lineISeries.update({ time: data.time, value: data.close });
|
|
},
|
|
getData: () => candlestickISeries.data(),
|
|
onRemove: () => {
|
|
onZoomChange.delete(handleZoom);
|
|
removeSeriesThemeListener();
|
|
ichart.removeSeries(candlestickISeries);
|
|
ichart.removeSeries(lineISeries);
|
|
},
|
|
});
|
|
|
|
panes.register(paneIndex, series, [candlestickISeries, lineISeries]);
|
|
|
|
return series;
|
|
},
|
|
/**
|
|
* @param {Object} args
|
|
* @param {string} args.name
|
|
* @param {number} args.order
|
|
* @param {AnyMetricPattern} args.metric
|
|
* @param {Color | [Color, Color]} [args.color] - Single color or [positive, negative] colors
|
|
* @param {number} [args.paneIndex]
|
|
* @param {boolean} [args.defaultActive]
|
|
* @param {HistogramSeriesPartialOptions} [args.options]
|
|
*/
|
|
addHistogram({
|
|
metric,
|
|
name,
|
|
color = [colors.green, colors.red],
|
|
order,
|
|
paneIndex = 0,
|
|
defaultActive,
|
|
options,
|
|
}) {
|
|
const isDualColor = Array.isArray(color);
|
|
const positiveColor = isDualColor ? color[0] : color;
|
|
const negativeColor = isDualColor ? color[1] : color;
|
|
|
|
/** @type {HistogramISeries} */
|
|
const iseries = /** @type {any} */ (
|
|
ichart.addSeries(
|
|
/** @type {SeriesDefinition<'Histogram'>} */ (HistogramSeries),
|
|
{
|
|
priceLineVisible: false,
|
|
...options,
|
|
},
|
|
paneIndex,
|
|
)
|
|
);
|
|
|
|
let active = defaultActive !== false;
|
|
let highlighted = true;
|
|
|
|
function update() {
|
|
iseries.applyOptions({
|
|
visible: active,
|
|
lastValueVisible: highlighted,
|
|
color: positiveColor.highlight(highlighted),
|
|
});
|
|
}
|
|
update();
|
|
const removeSeriesThemeListener = onThemeChange(update);
|
|
|
|
const series = serieses.create({
|
|
colors: isDualColor ? [positiveColor, negativeColor] : [positiveColor],
|
|
name,
|
|
order,
|
|
paneIndex,
|
|
defaultActive,
|
|
metric,
|
|
setOrder: (order) => iseries.setSeriesOrder(order),
|
|
show() {
|
|
if (active) return;
|
|
active = true;
|
|
update();
|
|
},
|
|
hide() {
|
|
if (!active) return;
|
|
active = false;
|
|
update();
|
|
},
|
|
highlight() {
|
|
if (highlighted) return;
|
|
highlighted = true;
|
|
update();
|
|
},
|
|
tame() {
|
|
if (!highlighted) return;
|
|
highlighted = false;
|
|
update();
|
|
},
|
|
setData: (data) => {
|
|
if (isDualColor) {
|
|
iseries.setData(
|
|
data.map((d) => ({
|
|
...d,
|
|
color:
|
|
"value" in d && d.value >= 0
|
|
? positiveColor()
|
|
: negativeColor(),
|
|
})),
|
|
);
|
|
} else {
|
|
iseries.setData(data);
|
|
}
|
|
},
|
|
update: (data) => iseries.update(data),
|
|
getData: () => iseries.data(),
|
|
onRemove: () => {
|
|
removeSeriesThemeListener();
|
|
ichart.removeSeries(iseries);
|
|
},
|
|
});
|
|
|
|
panes.register(paneIndex, series, [iseries]);
|
|
|
|
return series;
|
|
},
|
|
/**
|
|
* @param {Object} args
|
|
* @param {string} args.name
|
|
* @param {number} args.order
|
|
* @param {AnyMetricPattern} args.metric
|
|
* @param {Color} args.color
|
|
* @param {number} [args.paneIndex]
|
|
* @param {boolean} [args.defaultActive]
|
|
* @param {LineSeriesPartialOptions} [args.options]
|
|
*/
|
|
addLine({
|
|
metric,
|
|
name,
|
|
order,
|
|
color,
|
|
paneIndex = 0,
|
|
defaultActive,
|
|
options,
|
|
}) {
|
|
/** @type {LineISeries} */
|
|
const iseries = /** @type {any} */ (
|
|
ichart.addSeries(
|
|
/** @type {SeriesDefinition<'Line'>} */ (LineSeries),
|
|
{
|
|
lineWidth,
|
|
priceLineVisible: false,
|
|
...options,
|
|
},
|
|
paneIndex,
|
|
)
|
|
);
|
|
|
|
let active = defaultActive !== false;
|
|
let highlighted = true;
|
|
|
|
function update() {
|
|
iseries.applyOptions({
|
|
visible: active,
|
|
lastValueVisible: highlighted,
|
|
color: color.highlight(highlighted),
|
|
});
|
|
}
|
|
update();
|
|
const removeSeriesThemeListener = onThemeChange(update);
|
|
|
|
const series = serieses.create({
|
|
colors: [color],
|
|
name,
|
|
order,
|
|
paneIndex,
|
|
defaultActive,
|
|
metric,
|
|
setOrder: (order) => iseries.setSeriesOrder(order),
|
|
show() {
|
|
if (active) return;
|
|
active = true;
|
|
update();
|
|
},
|
|
hide() {
|
|
if (!active) return;
|
|
active = false;
|
|
update();
|
|
},
|
|
highlight() {
|
|
if (highlighted) return;
|
|
highlighted = true;
|
|
update();
|
|
},
|
|
tame() {
|
|
if (!highlighted) return;
|
|
highlighted = false;
|
|
update();
|
|
},
|
|
setData: (data) => iseries.setData(data),
|
|
update: (data) => iseries.update(data),
|
|
getData: () => iseries.data(),
|
|
onRemove: () => {
|
|
removeSeriesThemeListener();
|
|
ichart.removeSeries(iseries);
|
|
},
|
|
});
|
|
|
|
panes.register(paneIndex, series, [iseries]);
|
|
|
|
return series;
|
|
},
|
|
/**
|
|
* @param {Object} args
|
|
* @param {string} args.name
|
|
* @param {number} args.order
|
|
* @param {AnyMetricPattern} args.metric
|
|
* @param {Color} args.color
|
|
* @param {number} [args.paneIndex]
|
|
* @param {boolean} [args.defaultActive]
|
|
* @param {LineSeriesPartialOptions} [args.options]
|
|
*/
|
|
addDots({
|
|
metric,
|
|
name,
|
|
order,
|
|
color,
|
|
paneIndex = 0,
|
|
defaultActive,
|
|
options,
|
|
}) {
|
|
/** @type {LineISeries} */
|
|
const iseries = /** @type {any} */ (
|
|
ichart.addSeries(
|
|
/** @type {SeriesDefinition<'Line'>} */ (LineSeries),
|
|
{
|
|
priceLineVisible: false,
|
|
lineVisible: false,
|
|
pointMarkersVisible: true,
|
|
pointMarkersRadius: 1,
|
|
...options,
|
|
},
|
|
paneIndex,
|
|
)
|
|
);
|
|
|
|
let active = defaultActive !== false;
|
|
let highlighted = true;
|
|
let radius =
|
|
visibleBarsCount > 1000 ? 1 : visibleBarsCount > 200 ? 1.5 : 2;
|
|
|
|
function update() {
|
|
iseries.applyOptions({
|
|
visible: active,
|
|
lastValueVisible: highlighted,
|
|
color: color.highlight(highlighted),
|
|
});
|
|
}
|
|
update();
|
|
|
|
/** @type {ZoomChangeCallback} */
|
|
function handleZoom(count) {
|
|
const newRadius = count > 1000 ? 1 : count > 200 ? 1.5 : 2;
|
|
if (newRadius === radius) return;
|
|
radius = newRadius;
|
|
iseries.applyOptions({ pointMarkersRadius: radius });
|
|
}
|
|
onZoomChange.add(handleZoom);
|
|
const removeSeriesThemeListener = onThemeChange(update);
|
|
|
|
const series = serieses.create({
|
|
colors: [color],
|
|
name,
|
|
order,
|
|
paneIndex,
|
|
defaultActive,
|
|
metric,
|
|
setOrder: (order) => iseries.setSeriesOrder(order),
|
|
show() {
|
|
if (active) return;
|
|
active = true;
|
|
update();
|
|
},
|
|
hide() {
|
|
if (!active) return;
|
|
active = false;
|
|
update();
|
|
},
|
|
highlight() {
|
|
if (highlighted) return;
|
|
highlighted = true;
|
|
update();
|
|
},
|
|
tame() {
|
|
if (!highlighted) return;
|
|
highlighted = false;
|
|
update();
|
|
},
|
|
setData: (data) => iseries.setData(data),
|
|
update: (data) => iseries.update(data),
|
|
getData: () => iseries.data(),
|
|
onRemove: () => {
|
|
onZoomChange.delete(handleZoom);
|
|
removeSeriesThemeListener();
|
|
ichart.removeSeries(iseries);
|
|
},
|
|
});
|
|
|
|
panes.register(paneIndex, series, [iseries]);
|
|
|
|
return series;
|
|
},
|
|
/**
|
|
* @param {Object} args
|
|
* @param {string} args.name
|
|
* @param {number} args.order
|
|
* @param {AnyMetricPattern} args.metric
|
|
* @param {number} [args.paneIndex]
|
|
* @param {boolean} [args.defaultActive]
|
|
* @param {Color} [args.topColor]
|
|
* @param {Color} [args.bottomColor]
|
|
* @param {BaselineSeriesPartialOptions} [args.options]
|
|
*/
|
|
addBaseline({
|
|
metric,
|
|
name,
|
|
order,
|
|
paneIndex: _paneIndex,
|
|
defaultActive,
|
|
topColor = colors.green,
|
|
bottomColor = colors.red,
|
|
options,
|
|
}) {
|
|
const paneIndex = _paneIndex ?? 0;
|
|
|
|
/** @type {BaselineISeries} */
|
|
const iseries = /** @type {any} */ (
|
|
ichart.addSeries(
|
|
/** @type {SeriesDefinition<'Baseline'>} */ (BaselineSeries),
|
|
{
|
|
lineWidth,
|
|
baseValue: {
|
|
price: options?.baseValue?.price ?? 0,
|
|
},
|
|
...options,
|
|
priceLineVisible: false,
|
|
bottomFillColor1: "transparent",
|
|
bottomFillColor2: "transparent",
|
|
topFillColor1: "transparent",
|
|
topFillColor2: "transparent",
|
|
lineVisible: true,
|
|
},
|
|
paneIndex,
|
|
)
|
|
);
|
|
|
|
let active = defaultActive !== false;
|
|
let highlighted = true;
|
|
|
|
function update() {
|
|
iseries.applyOptions({
|
|
visible: active,
|
|
lastValueVisible: highlighted,
|
|
topLineColor: topColor.highlight(highlighted),
|
|
bottomLineColor: bottomColor.highlight(highlighted),
|
|
});
|
|
}
|
|
update();
|
|
const removeSeriesThemeListener = onThemeChange(update);
|
|
|
|
const series = serieses.create({
|
|
colors: [topColor, bottomColor],
|
|
name,
|
|
order,
|
|
paneIndex,
|
|
defaultActive,
|
|
metric,
|
|
setOrder: (order) => iseries.setSeriesOrder(order),
|
|
show() {
|
|
if (active) return;
|
|
active = true;
|
|
update();
|
|
},
|
|
hide() {
|
|
if (!active) return;
|
|
active = false;
|
|
update();
|
|
},
|
|
highlight() {
|
|
if (highlighted) return;
|
|
highlighted = true;
|
|
update();
|
|
},
|
|
tame() {
|
|
if (!highlighted) return;
|
|
highlighted = false;
|
|
update();
|
|
},
|
|
setData: (data) => iseries.setData(data),
|
|
update: (data) => iseries.update(data),
|
|
getData: () => iseries.data(),
|
|
onRemove: () => {
|
|
removeSeriesThemeListener();
|
|
ichart.removeSeries(iseries);
|
|
},
|
|
});
|
|
|
|
panes.register(paneIndex, series, [iseries]);
|
|
|
|
return series;
|
|
},
|
|
};
|
|
|
|
/**
|
|
* @param {number} paneIndex
|
|
* @param {Unit} unit
|
|
*/
|
|
function applyScaleForUnit(paneIndex, unit) {
|
|
const id = `${chartId}-scale`;
|
|
const defaultValue = unit.id === "usd" ? "log" : "lin";
|
|
|
|
const persisted = createPersistedValue({
|
|
defaultValue: /** @type {"lin" | "log"} */ (defaultValue),
|
|
storageKey: `${id}-${paneIndex}-${unit.id}`,
|
|
urlKey: paneIndex === 0 ? "price_scale" : "unit_scale",
|
|
serialize: (v) => v,
|
|
deserialize: (s) => /** @type {"lin" | "log"} */ (s),
|
|
});
|
|
|
|
/** @param {"lin" | "log"} value */
|
|
const applyScale = (value) => {
|
|
panes.whenReady(paneIndex, () => {
|
|
try {
|
|
ichart
|
|
.panes()
|
|
.at(paneIndex)
|
|
?.priceScale("right")
|
|
.applyOptions({
|
|
mode: value === "lin" ? 0 : 1,
|
|
});
|
|
} catch {}
|
|
});
|
|
};
|
|
|
|
applyScale(persisted.value);
|
|
|
|
fieldsets.addIfNeeded({
|
|
id,
|
|
paneIndex,
|
|
position: "sw",
|
|
createChild() {
|
|
return createRadios({
|
|
choices: /** @type {const} */ (["lin", "log"]),
|
|
id: stringToId(`${id} ${paneIndex}`),
|
|
initialValue: persisted.value,
|
|
onChange(value) {
|
|
persisted.set(value);
|
|
applyScale(value);
|
|
},
|
|
});
|
|
},
|
|
});
|
|
}
|
|
|
|
const blueprints = {
|
|
/** @type {{ map: Map<Unit, AnyFetchedSeriesBlueprint[]>, series: AnySeries[], unit: Unit | null, legend: Legend }[]} */
|
|
panes: [
|
|
{ map: new Map(), series: [], unit: null, legend: legends.top },
|
|
{ map: new Map(), series: [], unit: null, legend: legends.bottom },
|
|
],
|
|
|
|
/** @type {VoidFunction | undefined} */
|
|
onDataLoaded: undefined,
|
|
|
|
/** @param {number} paneIndex */
|
|
rebuildPane(paneIndex) {
|
|
const pane = this.panes[paneIndex];
|
|
const { map, series, unit, legend } = pane;
|
|
|
|
if (!unit) {
|
|
series.forEach((s) => s.remove());
|
|
pane.series = [];
|
|
legend.removeFrom(0);
|
|
return;
|
|
}
|
|
|
|
const idx = index.get();
|
|
legend.removeFrom(0);
|
|
|
|
// Store old series to remove AFTER adding new ones
|
|
// This prevents pane collapse which loses scale settings
|
|
const oldSeries = [...series];
|
|
pane.series = [];
|
|
|
|
map.get(unit)?.forEach((blueprint, order) => {
|
|
const options = blueprint.options;
|
|
const indexes = Object.keys(blueprint.metric.by);
|
|
|
|
const defaultColor = unit.id === "usd" ? colors.green : colors.orange;
|
|
|
|
if (indexes.includes(idx)) {
|
|
switch (blueprint.type) {
|
|
case "Baseline": {
|
|
pane.series.push(
|
|
serieses.addBaseline({
|
|
metric: blueprint.metric,
|
|
name: blueprint.title,
|
|
defaultActive: blueprint.defaultActive,
|
|
paneIndex,
|
|
options: {
|
|
...options,
|
|
topLineColor:
|
|
blueprint.color?.() ?? blueprint.colors?.[0](),
|
|
bottomLineColor:
|
|
blueprint.color?.() ?? blueprint.colors?.[1](),
|
|
},
|
|
order,
|
|
}),
|
|
);
|
|
break;
|
|
}
|
|
case "Histogram": {
|
|
pane.series.push(
|
|
serieses.addHistogram({
|
|
metric: blueprint.metric,
|
|
name: blueprint.title,
|
|
color: blueprint.color,
|
|
defaultActive: blueprint.defaultActive,
|
|
paneIndex,
|
|
options,
|
|
order,
|
|
}),
|
|
);
|
|
break;
|
|
}
|
|
case "Candlestick": {
|
|
pane.series.push(
|
|
serieses.addCandlestick({
|
|
metric: blueprint.metric,
|
|
name: blueprint.title,
|
|
colors: blueprint.colors,
|
|
defaultActive: blueprint.defaultActive,
|
|
paneIndex,
|
|
options,
|
|
order,
|
|
}),
|
|
);
|
|
break;
|
|
}
|
|
case "Dots": {
|
|
pane.series.push(
|
|
serieses.addDots({
|
|
metric: blueprint.metric,
|
|
color: blueprint.color ?? defaultColor,
|
|
name: blueprint.title,
|
|
defaultActive: blueprint.defaultActive,
|
|
paneIndex,
|
|
options,
|
|
order,
|
|
}),
|
|
);
|
|
break;
|
|
}
|
|
case "Line":
|
|
case undefined:
|
|
pane.series.push(
|
|
serieses.addLine({
|
|
metric: blueprint.metric,
|
|
color: blueprint.color ?? defaultColor,
|
|
name: blueprint.title,
|
|
defaultActive: blueprint.defaultActive,
|
|
paneIndex,
|
|
options,
|
|
order,
|
|
}),
|
|
);
|
|
}
|
|
}
|
|
});
|
|
|
|
// Remove old series AFTER adding new ones to prevent pane collapse
|
|
oldSeries.forEach((s) => s.remove());
|
|
|
|
// Ensure other pane's series are in their correct pane before applying scale
|
|
// (they may have been collapsed when this pane was empty)
|
|
const otherPaneIndex = paneIndex === 0 ? 1 : 0;
|
|
panes.moveTo(otherPaneIndex, otherPaneIndex);
|
|
|
|
// Apply scale after series are created and panes are properly separated
|
|
applyScaleForUnit(paneIndex, unit);
|
|
},
|
|
|
|
rebuild() {
|
|
this.rebuildPane(0);
|
|
this.rebuildPane(1);
|
|
},
|
|
};
|
|
|
|
// Rebuild when index changes
|
|
index.onChange.add(() => blueprints.rebuild());
|
|
|
|
const chart = {
|
|
index,
|
|
|
|
/**
|
|
* @param {Object} args
|
|
* @param {Map<Unit, AnyFetchedSeriesBlueprint[]>} args.top
|
|
* @param {Map<Unit, AnyFetchedSeriesBlueprint[]>} args.bottom
|
|
* @param {VoidFunction} [args.onDataLoaded]
|
|
*/
|
|
setBlueprints({ top, bottom, onDataLoaded }) {
|
|
blueprints.panes[0].map = top;
|
|
blueprints.panes[1].map = bottom;
|
|
blueprints.onDataLoaded = onDataLoaded;
|
|
|
|
// Set up unit selectors for each pane
|
|
[top, bottom].forEach((map, paneIndex) => {
|
|
const units = Array.from(map.keys());
|
|
if (!units.length) {
|
|
blueprints.panes[paneIndex].unit = null;
|
|
return;
|
|
}
|
|
|
|
const defaultUnit = units[0];
|
|
const persistedUnit = createPersistedValue({
|
|
defaultValue: /** @type {string} */ (defaultUnit.id),
|
|
urlKey: paneIndex === 0 ? "u0" : "u1",
|
|
serialize: (v) => v,
|
|
deserialize: (s) => s,
|
|
});
|
|
|
|
// Find unit matching persisted value, or use default
|
|
const initialUnit =
|
|
units.find((u) => u.id === persistedUnit.value) ?? defaultUnit;
|
|
blueprints.panes[paneIndex].unit = initialUnit;
|
|
|
|
fieldsets.addIfNeeded({
|
|
id: `${chartId}-unit`,
|
|
paneIndex,
|
|
position: "nw",
|
|
createChild() {
|
|
return createSelect({
|
|
choices: units,
|
|
id: `pane-${paneIndex}-unit`,
|
|
initialValue: blueprints.panes[paneIndex].unit ?? defaultUnit,
|
|
toKey: (u) => u.id,
|
|
toLabel: (u) => u.name,
|
|
sorted: true,
|
|
onChange(unit) {
|
|
persistedUnit.set(unit.id);
|
|
blueprints.panes[paneIndex].unit = unit;
|
|
blueprints.rebuildPane(paneIndex);
|
|
},
|
|
});
|
|
},
|
|
});
|
|
});
|
|
|
|
blueprints.rebuild();
|
|
|
|
return blueprints;
|
|
},
|
|
|
|
destroy() {
|
|
removeThemeListener();
|
|
clearInterval(refreshInterval);
|
|
ichart.remove();
|
|
},
|
|
};
|
|
|
|
const captureButton = document.createElement("button");
|
|
captureButton.className = "capture";
|
|
captureButton.innerText = "capture";
|
|
captureButton.title = "Capture chart as image";
|
|
captureButton.addEventListener("click", () => {
|
|
capture({
|
|
screenshot: ichart.takeScreenshot(),
|
|
chartWidth: elements.chart.clientWidth,
|
|
parent,
|
|
legends,
|
|
});
|
|
});
|
|
elements.chart.append(captureButton);
|
|
|
|
return chart;
|
|
}
|
|
|
|
/**
|
|
* @typedef {typeof createChart} CreateChart
|
|
* @typedef {ReturnType<createChart>} Chart
|
|
*/
|