each()

in src/component/legend/LegendView.ts [188:315]
92 lines of code
18 McCabe index (conditional complexity)

        each(legendModel.getData(), function (legendItemModel, dataIndex) {
            const name = legendItemModel.get('name');

            // Use empty string or \n as a newline string
            if (!this.newlineDisabled && (name === '' || name === '\n')) {
                const g = new Group();
                // @ts-ignore
                g.newline = true;
                contentGroup.add(g);
                return;
            }

            // Representitive series.
            const seriesModel = ecModel.getSeriesByName(name)[0] as
                SeriesModel<SeriesOption & SymbolOptionMixin>;

            if (legendDrawnMap.get(name)) {
                // Have been drawn
                return;
            }

            // Legend to control series.
            if (seriesModel) {
                const data = seriesModel.getData();
                const lineVisualStyle = data.getVisual('legendLineStyle') || {};
                const legendIcon = data.getVisual('legendIcon');

                /**
                 * `data.getVisual('style')` may be the color from the register
                 * in series. For example, for line series,
                 */
                const style = data.getVisual('style');

                const itemGroup = this._createItem(
                    seriesModel, name, dataIndex,
                    legendItemModel, legendModel, itemAlign,
                    lineVisualStyle, style, legendIcon, selectMode, api
                );

                itemGroup.on('click', curry(dispatchSelectAction, name, null, api, excludeSeriesId))
                    .on('mouseover', curry(dispatchHighlightAction, seriesModel.name, null, api, excludeSeriesId))
                    .on('mouseout', curry(dispatchDownplayAction, seriesModel.name, null, api, excludeSeriesId));

                if (ecModel.ssr) {
                    itemGroup.eachChild(child => {
                        const ecData = getECData(child);
                        ecData.seriesIndex = seriesModel.seriesIndex;
                        ecData.dataIndex = dataIndex;
                        ecData.ssrType = 'legend';
                    });
                }
                if (triggerEvent) {
                    itemGroup.eachChild(child => {
                        this.packEventData(child, legendModel, seriesModel, dataIndex, name);
                    });
                }

                legendDrawnMap.set(name, true);
            }
            else {
                // Legend to control data. In pie and funnel.
                ecModel.eachRawSeries(function (seriesModel) {

                    // In case multiple series has same data name
                    if (legendDrawnMap.get(name)) {
                        return;
                    }

                    if (seriesModel.legendVisualProvider) {
                        const provider = seriesModel.legendVisualProvider;
                        if (!provider.containName(name)) {
                            return;
                        }

                        const idx = provider.indexOfName(name);

                        let style = provider.getItemVisual(idx, 'style') as PathStyleProps;
                        const legendIcon = provider.getItemVisual(idx, 'legendIcon');

                        const colorArr = parse(style.fill as ColorString);
                        // Color may be set to transparent in visualMap when data is out of range.
                        // Do not show nothing.
                        if (colorArr && colorArr[3] === 0) {
                            colorArr[3] = 0.2;
                            // TODO color is set to 0, 0, 0, 0. Should show correct RGBA
                            style = zrUtil.extend(zrUtil.extend({}, style), { fill: stringify(colorArr, 'rgba') });
                        }

                        const itemGroup = this._createItem(
                            seriesModel, name, dataIndex,
                            legendItemModel, legendModel, itemAlign,
                            {}, style, legendIcon, selectMode, api
                        );

                        // FIXME: consider different series has items with the same name.
                        itemGroup.on('click', curry(dispatchSelectAction, null, name, api, excludeSeriesId))
                            // Should not specify the series name, consider legend controls
                            // more than one pie series.
                            .on('mouseover', curry(dispatchHighlightAction, null, name, api, excludeSeriesId))
                            .on('mouseout', curry(dispatchDownplayAction, null, name, api, excludeSeriesId));

                        if (ecModel.ssr) {
                            itemGroup.eachChild(child => {
                                const ecData = getECData(child);
                                ecData.seriesIndex = seriesModel.seriesIndex;
                                ecData.dataIndex = dataIndex;
                                ecData.ssrType = 'legend';
                            });
                        }
                        if (triggerEvent) {
                            itemGroup.eachChild(child => {
                                this.packEventData(child, legendModel, seriesModel, dataIndex, name);
                            });
                        }
                        legendDrawnMap.set(name, true);
                    }

                }, this);
            }

            if (__DEV__) {
                if (!legendDrawnMap.get(name)) {
                    console.warn(
                        name + ' series not exists. Legend data should be same with series name or data name.'
                    );
                }
            }
        }, this);