feat(tree): add tree path info to tooltip

src/chart/tree/TreeSeries.ts

@@ -38,6 +38,7 @@ import View from '../../coord/View';
 import { LayoutRect } from '../../util/layout';
 import Model from '../../model/Model';
 import { createTooltipMarkup } from '../../component/tooltip/tooltipMarkup';
+import { wrapTreePathInfo } from '../helper/treeHelper';
 
 interface CurveLineStyleOption extends LineStyleOption{
     curveness?: number
@@ -112,6 +113,16 @@ export interface TreeSeriesOption extends
     data?: TreeSeriesNodeItemOption[]
 }
 
+interface TreePathInfo {
+    name: string
+    dataIndex: number
+    value: number
+}
+
+interface TreeSeriesCallbackDataParams extends CallbackDataParams {
+    treePathInfo?: TreePathInfo[]
+}
+
 class TreeSeriesModel extends SeriesModel<TreeSeriesOption> {
     static readonly type = 'series.tree';
 
@@ -224,6 +235,16 @@ class TreeSeriesModel extends SeriesModel<TreeSeriesOption> {
         });
     }
 
+    // Add tree path to tooltip param
+    getDataParams(dataIndex: number) {
+        const params = super.getDataParams.apply(this, arguments as any) as TreeSeriesCallbackDataParams;
+
+        const node = this.getData().tree.getNodeByDataIndex(dataIndex);
+        params.treePathInfo = wrapTreePathInfo(node, this);
+
+        return params;
+    }
+
     static defaultOption: TreeSeriesOption = {
         zlevel: 0,
         z: 2,