topic Re: Ideas on how to programmatically set default selection in custom List Widget in ArcGIS Experience Builder Questions

Ideas on how to programmatically set default selection in custom List Widget

PaulNRWA — Fri, 30 Jun 2023 17:11:19 GMT

I've created a relatively complex dashboard that represents data across all the states. All my widgets are in-sync and properly update when the user changes selections, etc. I had a request to provide this dashboard, but at the state level only. Since I already have a state list widget setup, I was hoping to use everything that is currently working and simply set the selected state in the list widget. I have the code to determine the state the user is from, but I cannot find a good function to set the default value.

I was trying to over-ride the following function, but I'm not sure the right place to call it from during the loading process. Everything I've tried, ends up in an endless loop that throws and error.

private readonly selectRecords = (records: DataRecord[]) => {

const { datasource } = this.state

if (datasource) {

MessageManager.getInstance().publishMessage(

new DataRecordsSelectionChangeMessage(this.props.id, records)

)

if (records) {

this.isMySelected = true

this.isHasPublishMessageAction = true

datasource.selectRecordsByIds(records.map(record => record.getId()))

const outputDs = this.getOutputDs()

outputDs &&

outputDs.selectRecordsByIds(records.map(record => record.getId()))

} else {

this.isHasPublishMessageAction = false

}

I can easily determine the RecordID to set, but I need to figure out where to call this from during the initial load. On a related note, any ideas how to disable the widget programmatically, so the user can switch to see other data?

Re: Ideas on how to programmatically set default selection in custom List Widget

JeffreyThompson2 — Fri, 30 Jun 2023 17:35:20 GMT

It looks like a class based React component. I would try setting up a componentDidMount() function.

https://legacy.reactjs.org/docs/react-component.html#componentdidmount

Re: Ideas on how to programmatically set default selection in custom List Widget

PaulNRWA — Fri, 30 Jun 2023 21:14:47 GMT

Thanks Jeffrey. I was experimenting with some code in that function and will go back and take a closer look. I agree that it seemed like the logical place to add my code.

Re: Ideas on how to programmatically set default selection in custom List Widget

PaulNRWA — Sat, 01 Jul 2023 19:18:23 GMT

Jeffrey - To follow up on the question. I was able to get the foundation of my code working, by using componentDidUpdate function. I had to add code to make sure the datasource was "Loaded" and not "Loading". datasource.getStatus() === DataSourceStatus.Loading

Once I was sure the dataSource was loaded, I was able to call SelectRecords, using an appropriate DataRecord.

Now it's time to fill in the rest of the code.