@visactor/vgrammar-core/es/component/datazoom.js

VGrammar is a visual grammar library

import { DataZoom as DatazoomComponent } from "@visactor/vrender-components";

import { isNil, isString, merge, mixin } from "@visactor/vutils";

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

import { invokeEncoder } from "../graph/mark/encode";

import { Component } from "../view/component";

import { parseEncodeType } from "../parse/mark";

import { Factory } from "../core/factory";

import { DatazoomFilter } from "../interactions/datazoom-filter";

import { Filter, FilterMixin } from "../interactions/filter";

export const generateDatazoomAttributes = (data, theme, addition) => {
    var _a;
    const datazoomTheme = null === (_a = null == theme ? void 0 : theme.components) || void 0 === _a ? void 0 : _a.datazoom;
    return data ? merge({}, datazoomTheme, {
        previewData: data
    }, null != addition ? addition : {}) : merge({}, datazoomTheme, null != addition ? addition : {});
};

export class Datazoom extends Component {
    constructor(view, group) {
        super(view, ComponentEnum.datazoom, group), this.spec.componentType = ComponentEnum.datazoom;
    }
    parseAddition(spec) {
        var _a;
        super.parseAddition(spec);
        const {data: data, x: x, y: y, x1: x1, y1: y1} = null !== (_a = spec.preview) && void 0 !== _a ? _a : {};
        return this.preview(data, x, y, x1, y1), this._updateComponentEncoders(), this;
    }
    preview(data, x, y, x1, y1) {
        if (!isNil(this.spec.preview)) {
            const lastData = this.spec.preview.data, lastDataGrammar = isString(lastData) ? this.view.getDataById(lastData) : lastData;
            this.detach(lastDataGrammar), this.detach(parseEncodeType(this.spec.preview.x, this.view)), 
            this.detach(parseEncodeType(this.spec.preview.y, this.view)), this.detach(parseEncodeType(this.spec.preview.x1, this.view)), 
            this.detach(parseEncodeType(this.spec.preview.y1, this.view));
        }
        if (this.spec.preview = void 0, data) {
            this.spec.preview = {
                data: data,
                x: x,
                y: y,
                x1: x1,
                y1: y1
            };
            const dataGrammar = isString(data) ? this.view.getDataById(data) : data;
            this.attach(dataGrammar), this.attach(parseEncodeType(x, this.view)), this.attach(parseEncodeType(y, this.view)), 
            this.attach(parseEncodeType(x1, this.view)), this.attach(parseEncodeType(y1, this.view));
        }
        return this._updateComponentEncoders(), this.commit(), this;
    }
    setStartEndValue(start, end) {
        const datazoom = this.getGroupGraphicItem();
        return datazoom && datazoom.setStartAndEnd && datazoom.setStartAndEnd(start, end), 
        this;
    }
    getStartEndValue() {
        const datazoom = this.getGroupGraphicItem();
        if (datazoom) {
            const state = datazoom.state;
            return {
                start: state.start,
                end: state.end
            };
        }
        return null;
    }
    addGraphicItem(attrs, groupKey) {
        var _a;
        const theme = this.spec.skipTheme ? null : this.view.getCurrentTheme(), initialAttributes = Object.assign({}, null === (_a = null == theme ? void 0 : theme.components) || void 0 === _a ? void 0 : _a.datazoom, attrs), graphicItem = Factory.createGraphicComponent(this.componentType, initialAttributes, {
            skipDefault: this.spec.skipTheme
        });
        return this.setDatazoomHandlers(graphicItem), super.addGraphicItem(initialAttributes, groupKey, graphicItem);
    }
    reuse(grammar) {
        return super.reuse(grammar), this.setDatazoomHandlers(), this;
    }
    _updateComponentEncoders() {
        var _a;
        const data = null === (_a = this.spec.preview) || void 0 === _a ? void 0 : _a.data, dataGrammar = isString(data) ? this.view.getDataById(data) : data, encoders = Object.assign({
            update: {}
        }, this.spec.encode), componentEncoders = Object.keys(encoders).reduce(((res, state) => {
            const encoder = encoders[state];
            return encoder && (res[state] = {
                callback: (datum, element, parameters) => {
                    var _a;
                    const theme = this.spec.skipTheme ? null : this.view.getCurrentTheme(), addition = invokeEncoder(encoder, datum, element, parameters);
                    return generateDatazoomAttributes(null === (_a = null == dataGrammar ? void 0 : dataGrammar.getValue) || void 0 === _a ? void 0 : _a.call(dataGrammar), theme, addition);
                }
            }), res;
        }), {});
        this._encoders = componentEncoders;
    }
    invertDatazoomRatio(ratio) {
        const scale = this.getDatazoomMainScale();
        if (scale) {
            const range = scale.range(), scaledValue = (range[range.length - 1] - range[0]) * ratio + range[0];
            return scale.invert(scaledValue);
        }
        return null;
    }
    getDatazoomMainScale() {
        var _a, _b;
        const datazoom = this.getGroupGraphicItem();
        if (datazoom && this.spec.preview) {
            const scale = "top" === datazoom.attribute.orient || "bottom" === datazoom.attribute.orient ? null === (_a = this.spec.preview.x) || void 0 === _a ? void 0 : _a.scale : null === (_b = this.spec.preview.y) || void 0 === _b ? void 0 : _b.scale, scaleGrammar = isString(scale) ? this.view.getScaleById(scale) : scale;
            return null == scaleGrammar ? void 0 : scaleGrammar.getScale();
        }
        return null;
    }
    setDatazoomHandlers(graphicItem) {
        var _a;
        const datazoom = null != graphicItem ? graphicItem : this.getGroupGraphicItem();
        datazoom.setStatePointToData((state => {
            var _a;
            return this.spec.preview && null !== (_a = this.invertDatazoomRatio(state)) && void 0 !== _a ? _a : state;
        }));
        const {data: data, x: x, y: y, x1: x1, y1: y1} = null !== (_a = this.spec.preview) && void 0 !== _a ? _a : {};
        datazoom.setPreviewPointsX((datum => {
            if (x && data) return invokeEncoder({
                x: x
            }, datum, this.elements[0], this.parameters()).x;
        })), datazoom.setPreviewPointsY((datum => {
            if (y && data) return invokeEncoder({
                y: y
            }, datum, this.elements[0], this.parameters()).y;
        })), datazoom.setPreviewPointsX1((datum => {
            if (x1 && data) return invokeEncoder({
                x1: x1
            }, datum, this.elements[0], this.parameters()).x1;
        })), datazoom.setPreviewPointsY1((datum => {
            if (y1 && data) return invokeEncoder({
                y1: y1
            }, datum, this.elements[0], this.parameters()).y1;
        }));
    }
}

Datazoom.componentType = ComponentEnum.datazoom;

export const registerDataZoom = () => {
    Factory.registerGraphicComponent(ComponentEnum.datazoom, (attrs => new DatazoomComponent(attrs))), 
    Factory.registerComponent(ComponentEnum.datazoom, Datazoom), mixin(Filter, FilterMixin), 
    Factory.registerInteraction(DatazoomFilter.type, DatazoomFilter);
};
//# sourceMappingURL=datazoom.js.map