src/chart/helper/createListFromArray.js

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define(function(require) {
    'use strict';

    var List = require('../../data/List');
    var completeDimensions = require('../../data/helper/completeDimensions');
    var zrUtil = require('zrender/core/util');
    var modelUtil = require('../../util/model');
    var CoordinateSystem = require('../../CoordinateSystem');
    var getDataItemValue = modelUtil.getDataItemValue;
    var converDataValue = modelUtil.converDataValue;

    function firstDataNotNull(data) {
        var i = 0;
        while (i < data.length && data[i] == null) {
            i++;
        }
        return data[i];
    }
    function ifNeedCompleteOrdinalData(data) {
        var sampleItem = firstDataNotNull(data);
        return sampleItem != null
            && !zrUtil.isArray(getDataItemValue(sampleItem));
    }

    /**
     * Helper function to create a list from option data
     */
    function createListFromArray(data, seriesModel, ecModel) {
        // If data is undefined
        data = data || [];

        if (__DEV__) {
            if (!zrUtil.isArray(data)) {
                throw new Error('Invalid data.');
            }
        }

        var coordSysName = seriesModel.get('coordinateSystem');
        var creator = creators[coordSysName];
        var registeredCoordSys = CoordinateSystem.get(coordSysName);
        // FIXME
        var axesInfo = creator && creator(data, seriesModel, ecModel);
        var dimensions = axesInfo && axesInfo.dimensions;
        if (!dimensions) {
            // Get dimensions from registered coordinate system
            dimensions = (registeredCoordSys && registeredCoordSys.dimensions) || ['x', 'y'];
            dimensions = completeDimensions(dimensions, data, dimensions.concat(['value']));
        }
        var categoryIndex = axesInfo ? axesInfo.categoryIndex : -1;

        var list = new List(dimensions, seriesModel);

        var nameList = createNameList(axesInfo, data);

        var categories = {};
        var dimValueGetter = (categoryIndex >= 0 && ifNeedCompleteOrdinalData(data))
            ? function (itemOpt, dimName, dataIndex, dimIndex) {
                // If any dataItem is like { value: 10 }
                if (modelUtil.isDataItemOption(itemOpt)) {
                    list.hasItemOption = true;