Custom Modes

[mcwhittemore]

The modularity provided by a mode system should be exposed to end-users so they can replace out the default interactions with their own.

[drewbo]

@mcwhittemore any ideas on how to implement this? It seems pretty tricky because the modes are so closely tied to some of the api methods ala https://github.com/mapbox/mapbox-gl-draw/blob/master/src/api.js#L129 instead of falling back to the larger mode modules. Happy to kick around some ideas + code as we're looking to use this again in another project with some custom behavior

[drewbo]

Actually, the more I look; the file I mentioned is really the only place where the modularity of the mode system breaks down a little (nice job!). Would the next steps to implementing this feature be something like:

• Abstract the API checks for other custom modes
• Document required methods for a custom mode module/object
• Provide a method or option for loading those custom modes

Edit: noting that much of the second bullet is covered via the Draw Mode README

[mcwhittemore]

@drewbo sorry for just seeing this.

Those bullet points seem right to me.

We'll want to make sure the API for these modes is really pretty solid. Asking people to write custom modes and then breaking the API a few times won't be good. My key concern is cleaning up how events are handled/registered.

[mcwhittemore]

Here is a ticket where @davidtheclark and I are talking about this problem - #459

[BhavanPatel]

@mcwhittemore @drewbo I think GeoJSON support rectangle... as I have seen in this Demo and map seems mapbox.

[mcwhittemore]

Moved my reply to #604