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convert.ts
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convert.ts
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/**
* Copyright (c) 2017 ~ present NAVER Corp.
* billboard.js project is licensed under the MIT license
*/
import {isUndefined, isDefined, isObject, isValue, notEmpty, isArray} from "../../module/util";
import {runWorker} from "../../module/worker";
import {columns, json, rows, url} from "./convert.helper";
import type {IData} from "../data/IData";
/**
* Get data key for JSON
* @param {string|object} keysParam Key params
* @param {object} config Config object
* @returns {string} Data key
* @private
*/
function getDataKeyForJson(keysParam, config) {
const keys = keysParam || config?.data_keys;
if (keys?.x) {
config.data_x = keys.x;
}
return keys;
}
/**
* Data convert
* @memberof ChartInternal
* @private
*/
export default {
/**
* Convert data according its type
* @param {object} args data object
* @param {Function} [callback] callback for url(XHR) type loading
* @private
*/
convertData(args, callback: Function): void {
const {config} = this;
const useWorker = config.boost_useWorker;
let data = args;
if (args.bindto) {
data = {};
["url", "mimeType", "headers", "keys", "json", "keys", "rows", "columns"]
.forEach(v => {
const key = `data_${v}`;
if (key in args) {
data[v] = args[key];
}
});
}
if (data.url && callback) {
url(data.url, data.mimeType, data.headers,
getDataKeyForJson(data.keys, config),
callback
);
} else if (data.json) {
runWorker(useWorker, json, callback, [columns, rows])(
data.json,
getDataKeyForJson(data.keys, config)
);
} else if (data.rows) {
runWorker(useWorker, rows, callback)(data.rows);
} else if (data.columns) {
runWorker(useWorker, columns, callback)(data.columns);
} else if (args.bindto) {
throw Error("url or json or rows or columns is required.");
}
},
convertDataToTargets(data: {[key:string]: number|null}[], appendXs: boolean): IData[] {
const $$ = this;
const {axis, config, state} = $$;
let isCategorized = false;
let isTimeSeries = false;
let isCustomX = false;
if (axis) {
isCategorized = axis.isCategorized();
isTimeSeries = axis.isTimeSeries();
isCustomX = axis.isCustomX();
}
const dataKeys = Object.keys(data[0] || {});
const ids = dataKeys.length ? dataKeys.filter($$.isNotX, $$) : [];
const xs = dataKeys.length ? dataKeys.filter($$.isX, $$) : [];
let xsData;
// save x for update data by load when custom x and bb.x API
ids.forEach(id => {
const xKey = this.getXKey(id);
if (isCustomX || isTimeSeries) {
// if included in input data
if (xs.indexOf(xKey) >= 0) {
xsData = ((appendXs && $$.data.xs[id]) || [])
.concat(
data.map(d => d[xKey])
.filter(isValue)
.map((rawX, i) => $$.generateTargetX(rawX, id, i))
);
} else if (config.data_x) {
// if not included in input data, find from preloaded data of other id's x
xsData = this.getOtherTargetXs();
} else if (notEmpty(config.data_xs)) {
// if not included in input data, find from preloaded data
xsData = $$.getXValuesOfXKey(xKey, $$.data.targets);
}
// MEMO: if no x included, use same x of current will be used
} else {
xsData = data.map((d, i) => i);
}
xsData && (this.data.xs[id] = xsData);
});
// check x is defined
ids.forEach(id => {
if (!this.data.xs[id]) {
throw new Error(`x is not defined for id = "${id}".`);
}
});
// convert to target
const targets = ids.map((id, index) => {
const convertedId = config.data_idConverter.bind($$.api)(id);
const xKey = $$.getXKey(id);
const isCategory = isCustomX && isCategorized;
const hasCategory = isCategory && data.map(v => v.x)
.every(v => config.axis_x_categories.indexOf(v) > -1);
// when .load() with 'append' option is used for indexed axis
// @ts-ignore
const isDataAppend = data.__append__;
const xIndex = xKey === null && isDataAppend ?
$$.api.data.values(id).length : 0;
return {
id: convertedId,
id_org: id,
values: data.map((d, i) => {
const rawX = d[xKey];
let value = d[id];
let x;
value = value !== null && !isNaN(value) && !isObject(value) ?
+value : (isArray(value) || isObject(value) ? value : null);
// use x as categories if custom x and categorized
if ((isCategory || state.hasRadar) && index === 0 && !isUndefined(rawX)) {
if (!hasCategory && index === 0 && i === 0 && !isDataAppend) {
config.axis_x_categories = [];
}
x = config.axis_x_categories.indexOf(rawX);
if (x === -1) {
x = config.axis_x_categories.length;
config.axis_x_categories.push(rawX);
}
} else {
x = $$.generateTargetX(rawX, id, xIndex + i);
}
// mark as x = undefined if value is undefined and filter to remove after mapped
if (isUndefined(value) || $$.data.xs[id].length <= i) {
x = undefined;
}
return {
x,
value,
id: convertedId,
index: -1
};
}).filter(v => isDefined(v.x))
};
});
// finish targets
targets.forEach(t => {
// sort values by its x
if (config.data_xSort) {
t.values = t.values.sort((v1, v2) => {
const x1 = v1.x || v1.x === 0 ? v1.x : Infinity;
const x2 = v2.x || v2.x === 0 ? v2.x : Infinity;
return x1 - x2;
});
}
// indexing each value
t.values.forEach((v, i) => (v.index = i));
// this needs to be sorted because its index and value.index is identical
$$.data.xs[t.id]?.sort((v1, v2) => v1 - v2);
});
// cache information about values
state.hasNegativeValue = $$.hasNegativeValueInTargets(targets);
state.hasPositiveValue = $$.hasPositiveValueInTargets(targets);
// set target types
if (config.data_type) {
$$.setTargetType($$.mapToIds(targets)
.filter(id => !(id in config.data_types)), config.data_type);
}
// cache as original id keyed
targets.forEach(d => $$.cache.add(d.id_org, d, true));
return targets as IData[];
}
};