di-echarts/src/component/visualMap/typeDefaulter.ts

Apache ECharts is a powerful, interactive charting and data visualization library for browser

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
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* KIND, either express or implied.  See the License for the
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*/

import Component from '../../model/Component';
import {VisualMapOption} from './VisualMapModel';
import {PiecewiseVisualMapOption} from './PiecewiseModel';
import {ContinousVisualMapOption} from './ContinuousModel';

Component.registerSubTypeDefaulter(
    'visualMap', function (option: VisualMapOption) {
    // Compatible with ec2, when splitNumber === 0, continuous visualMap will be used.
    return (
            !option.categories
            && (
                !(
                    (option as PiecewiseVisualMapOption).pieces
                        ? ((option as PiecewiseVisualMapOption)).pieces.length > 0
                        : ((option as PiecewiseVisualMapOption)).splitNumber > 0
                )
                || (option as ContinousVisualMapOption).calculable
            )
        )
        ? 'continuous' : 'piecewise';
});