Method constructor

src/charts/number-display.js:37–60

* Create a Number Display widget. * * @example * // create a number display under #chart-container1 element using the default global chart group * var display1 = new NumberDisplay('#chart-container1'); * @param {String|node|d3.selection} parent - Any valid * {@link http

(parent, chartGroup)

     * Interaction with a chart will only trigger events and redraws within the chart's group.
     */
    constructor (parent, chartGroup) {
        super();

        this._formatNumber = format('.2s');
        this._html = {one: '', some: '', none: ''};
        this._lastValue = undefined;
        this._ariaLiveRegion = false;

        // dimension not required
        this._mandatoryAttributes(['group']);

        // default to ordering by value, to emulate old group.top(1) behavior when multiple groups
        this.ordering(kv => kv.value);

        this.data(group => {
            const valObj = group.value ? group.value() : this._maxBin(group.all());
            return this.valueAccessor()(valObj);
        });

        this.transitionDuration(250); // good default
        this.transitionDelay(0);

        this.anchor(parent, chartGroup);
    }

    /**
     * Gets or sets an optional object specifying HTML templates to use depending on the number