feat(custom): reusable custom series

src/chart/custom/CustomSeries.ts

@@ -308,6 +308,7 @@ export interface CustomSeriesRenderItemParams {
 
     dataIndexInside: number;
     dataInsideLength: number;
+    renderItemArgs: Dictionary<unknown>;
 
     actionType?: string;
 }
@@ -334,6 +335,7 @@ export interface CustomSeriesOption extends
     coordinateSystem?: string | 'none';
 
     renderItem?: CustomSeriesRenderItem;
+    renderItemArgs?: Dictionary<unknown>;
 
     /**
      * @deprecated

src/chart/custom/CustomView.ts

@@ -100,6 +100,7 @@ import {
     stopPreviousKeyframeAnimationAndRestore
 } from '../../animation/customGraphicKeyframeAnimation';
 import type SeriesModel from '../../model/Series';
+import { getCustomSeries } from './customSeriesRegister';
 
 const EMPHASIS = 'emphasis' as const;
 const NORMAL = 'normal' as const;
@@ -591,7 +592,18 @@ function makeRenderItem(
     ecModel: GlobalModel,
     api: ExtensionAPI
 ) {
-    const renderItem = customSeries.get('renderItem');
+    let renderItem = customSeries.get('renderItem');
+    if (typeof renderItem === 'string') {
+        // Find renderItem in registered custom series
+        const registeredRenderItem = getCustomSeries(renderItem);
+        if (registeredRenderItem) {
+            renderItem = registeredRenderItem;
+        }
+        else if (__DEV__) {
+            console.warn(`Custom series renderItem '${renderItem}' not found.
+                Call 'echarts.registerCustomSeries' to register it.`);
+        }
+    }
     const coordSys = customSeries.coordinateSystem;
     let prepareResult = {} as ReturnType<PrepareCustomInfo>;
 
@@ -635,7 +647,8 @@ function makeRenderItem(
         seriesIndex: customSeries.seriesIndex,
         coordSys: prepareResult.coordSys,
         dataInsideLength: data.count(),
-        encode: wrapEncodeDef(customSeries.getData())
+        encode: wrapEncodeDef(customSeries.getData()),
+        renderItemArgs: customSeries.get('renderItemArgs') || {}
     } as CustomSeriesRenderItemParams;
 
     // If someday intending to refactor them to a class, should consider do not

src/chart/custom/customSeriesRegister.ts

@@ -0,0 +1,11 @@
+import { CustomSeriesRenderItem } from './CustomSeries';
+
+const customRenderers: {[type: string]: CustomSeriesRenderItem} = {};
+
+export function registerCustomSeries(type: string, renderItem: CustomSeriesRenderItem): void {
+    customRenderers[type] = renderItem;
+}
+
+export function getCustomSeries(type: string): CustomSeriesRenderItem {
+    return customRenderers[type];
+}

src/core/echarts.ts

@@ -51,6 +51,7 @@ import ComponentModel from '../model/Component';
 import SeriesModel from '../model/Series';
 import ComponentView, {ComponentViewConstructor} from '../view/Component';
 import ChartView, {ChartViewConstructor} from '../view/Chart';
+import {CustomSeriesRenderItem} from '../chart/custom/CustomSeries';
 import * as graphic from '../util/graphic';
 import {getECData} from '../util/innerStore';
 import {
@@ -132,6 +133,7 @@ import lifecycle, {
 import { platformApi, setPlatformAPI } from 'zrender/src/core/platform';
 import { getImpl } from './impl';
 import type geoSourceManager from '../coord/geo/geoSourceManager';
+import {registerCustomSeries as registerCustom} from '../chart/custom/customSeriesRegister';
 
 declare let global: any;
 
@@ -2893,6 +2895,10 @@ export function getCoordinateSystemDimensions(type: string): DimensionDefinition
     }
 }
 
+export function registerCustomSeries(seriesType: string, renderItem: CustomSeriesRenderItem) {
+    registerCustom(seriesType, renderItem);
+}
+
 export {registerLocale} from './locale';
 
 /**

src/model/Global.ts

@@ -411,7 +411,8 @@ class GlobalModel extends Model<ECUnitOption> {
                 else {
                     const isSeriesType = mainType === 'series';
                     const ComponentModelClass = (ComponentModel as ComponentModelConstructor).getClass(
-                        mainType, resultItem.keyInfo.subType,
+                        mainType,
+                        resultItem.keyInfo.subType,
                         !isSeriesType // Give a more detailed warn later if series don't exists
                     );