Custom visual bing maps examples? Better way to handle keys

[chaitu927]

I am trying to build  custom visual using bing maps. I have read in some posts that there are not any good source code examples available. Curious to know how they handle the scenario for getting bing map key per customer? Do they ask customer to input bing map key via 'Format' pane in custom visual? 

What will be a better way to handle this scenario? 

[Anonymous]

I create own custom visual for bing maps. How you resolved the problem with the callback in code?

I add script  https://www.bing.com/api/maps/mapcontrol?callback=my function. When I want to add function, power bi doesn't see global function in code. 

[deldersveld · Accepted solution]

The Mapbox custom visual could act an example that you could extend to Bing. There's an option for access token under Format and a validation check for the token in the main visual file: 
https://github.com/mapbox/mapboxgl-powerbi/blob/master/capabilities.json

https://github.com/mapbox/mapboxgl-powerbi/blob/51e6ff5ae3047da1ccbae9643dd094035bfbc7d1/src/ts/mapb...

[chaitu927]

Thank you for the example resource.