Method init

src/component/dataZoom/DataZoomModel.ts:199–229

(option: Opts, parentModel: Model, ecModel: GlobalModel)

    settledOption: Opts;

    init(option: Opts, parentModel: Model, ecModel: GlobalModel): void {

        const inputRawOption = retrieveRawOption(option);

        /**
         * Suppose a "main process" start at the point that model prepared (that is,
         * model initialized or merged or method called in `action`).
         * We should keep the `main process` idempotent, that is, given a set of values
         * on `option`, we get the same result.
         *
         * But sometimes, values on `option` will be updated for providing users
         * a "final calculated value" (`dataZoomProcessor` will do that). Those value
         * should not be the base/input of the `main process`.
         *
         * So in that case we should save and keep the input of the `main process`
         * separately, called `settledOption`.
         *
         * For example, consider the case:
         * (Step_1) brush zoom the grid by `toolbox.dataZoom`,
         *     where the original input `option.startValue`, `option.endValue` are earsed by
         *     calculated value.
         * (Step)2) click the legend to hide and show a series,
         *     where the new range is calculated by the earsed `startValue` and `endValue`,
         *     which brings incorrect result.
         */
        this.settledOption = inputRawOption;

        this.mergeDefaultAndTheme(option, ecModel);

        this._doInit(inputRawOption);
    }

    mergeOption(newOption: Opts): void {
        const inputRawOption = retrieveRawOption(newOption);