ViewWhen
ViewWhen中的叶子节点，将在view.when()之后加载
基础用法
ViewWhen Emits
| name | arguments | descriptions |
|---|---|---|
| load | view: __esri.View | - |
ViewWhen Slots
| name | arguments | descriptions |
|---|---|---|
| default | view: __esri.View spatialReference: __esri.SpatialReference getLayerByTitle: (title: string) => __esri.Layer layers: __esri.Layer[] | - |