powerbi-visuals-utils-dataviewutils/lib/dataViewObjectsParser.js

dataviewutils

import * as DataViewObjects from "./dataViewObjects";
export class DataViewObjectsParser {
    static getDefault() {
        return new this();
    }
    static createPropertyIdentifier(objectName, propertyName) {
        return {
            objectName,
            propertyName
        };
    }
    static parse(dataView) {
        let dataViewObjectParser = this.getDefault(), properties;
        if (!dataView || !dataView.metadata || !dataView.metadata.objects) {
            return dataViewObjectParser;
        }
        properties = dataViewObjectParser.getProperties();
        for (let objectName in properties) {
            for (let propertyName in properties[objectName]) {
                const defaultValue = dataViewObjectParser[objectName][propertyName];
                dataViewObjectParser[objectName][propertyName] = DataViewObjects.getCommonValue(dataView.metadata.objects, properties[objectName][propertyName], defaultValue);
            }
        }
        return dataViewObjectParser;
    }
    static isPropertyEnumerable(propertyName) {
        return !DataViewObjectsParser.InnumerablePropertyPrefix.test(propertyName);
    }
    static enumerateObjectInstances(dataViewObjectParser, options) {
        let dataViewProperties = dataViewObjectParser && dataViewObjectParser[options.objectName];
        if (!dataViewProperties) {
            return [];
        }
        let instance = {
            objectName: options.objectName,
            selector: null,
            properties: {}
        };
        for (let key in dataViewProperties) {
            if (dataViewProperties.hasOwnProperty(key)) {
                instance.properties[key] = dataViewProperties[key];
            }
        }
        return {
            instances: [instance]
        };
    }
    getProperties() {
        let properties = {}, objectNames = Object.keys(this);
        objectNames.forEach((objectName) => {
            if (DataViewObjectsParser.isPropertyEnumerable(objectName)) {
                let propertyNames = Object.keys(this[objectName]);
                properties[objectName] = {};
                propertyNames.forEach((propertyName) => {
                    if (DataViewObjectsParser.isPropertyEnumerable(objectName)) {
                        properties[objectName][propertyName] =
                            DataViewObjectsParser.createPropertyIdentifier(objectName, propertyName);
                    }
                });
            }
        });
        return properties;
    }
}
DataViewObjectsParser.InnumerablePropertyPrefix = /^_/;
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