@visactor/vgrammar-core/es/interactions/roll-up.js

VGrammar is a visual grammar library

import { DataFilterRank } from "../graph/enums";

import { isArray, isString } from "@visactor/vutils";

import { Filter } from "./filter";

export class RollUp extends Filter {
    constructor(view, options) {
        super(view, options), this.type = RollUp.type, this._isToggle = !1, this.handleStart = event => {
            var _a, _b;
            const element = event.element;
            if (element && this._marks && this._marks.includes(element.mark)) {
                const filterValue = null === (_b = null === (_a = event.element) || void 0 === _a ? void 0 : _a.getDatum) || void 0 === _b ? void 0 : _b.call(_a);
                filterValue === this._filterData || isArray(filterValue) && isArray(this._filterValue) && filterValue.length === this._filterValue.length && filterValue.every((datum => !this._filterValue.includes(datum))) ? this._isToggle && (this._filterValue = null, 
                this.handleFilter(event)) : this.handleFilter(event);
            }
        }, this.handleReset = event => {
            this._filterValue && (this._filterValue = null, this.handleFilter(event));
        }, this.options = Object.assign({}, RollUp.defaultOptions, options), this._marks = view.getMarksBySelector(this.options.source), 
        this._data = isString(this.options.target.data) ? view.getDataById(this.options.target.data) : this.options.target.data;
    }
    getEvents() {
        if (!this._marks || 0 === this._marks.length) return [];
        if (!this._data) return [];
        const transform = this.options.target.transform;
        this._filterData(this._data, null, DataFilterRank.rollUp, (event => {
            var _a, _b;
            return null === (_b = null === (_a = null == event ? void 0 : event.element) || void 0 === _a ? void 0 : _a.getDatum) || void 0 === _b ? void 0 : _b.call(_a);
        }), void 0, ((data, filterValue) => transform(data, filterValue)));
        const events = [ {
            type: this.options.trigger,
            handler: this.handleStart
        } ], eventName = "empty" === this.options.triggerOff ? this.options.trigger : this.options.triggerOff.includes("view:") ? this.options.triggerOff.replace("view:", "") : this.options.triggerOff;
        return eventName !== this.options.trigger ? (events.push({
            type: eventName,
            handler: this.handleReset
        }), this._isToggle = !1) : this._isToggle = !0, events;
    }
}

RollUp.type = "roll-up", RollUp.defaultOptions = {
    trigger: "click",
    triggerOff: "empty"
};
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