Function installLabelLayout

src/label/installLabelLayout.ts:28–48

(registers: EChartsExtensionInstallRegisters)

const getLabelManager = makeInner<{ labelManager: LabelManager }, ExtensionAPI>();
export function installLabelLayout(registers: EChartsExtensionInstallRegisters) {
    registers.registerUpdateLifecycle('series:beforeupdate', function (ecModel, api, params) {
        // TODO api provide an namespace that can save stuff per instance
        let labelManager = getLabelManager(api).labelManager;
        if (!labelManager) {
            labelManager = getLabelManager(api).labelManager = new LabelManager();
        }
        labelManager.clearLabels();
    });

    registers.registerUpdateLifecycle('series:layoutlabels', function (ecModel, api, params) {
        const labelManager = getLabelManager(api).labelManager;

        each(params.updatedSeries, function (series) {
            labelManager.addLabelsOfSeries(api.getViewOfSeriesModel(series));
        });
        labelManager.updateLayoutConfig(api);
        labelManager.layout(api);
        labelManager.processLabelsOverall();
    });
}