Location Button

[rolson]

trafficstars

Adds a button to the toolkit that allows a user to show their current location.

The view can be positioned anywhere, with any background. This example uses a "regular material background" in a rounded rectangle.

• Tap once, location display starts, if using a system location datasource, it will request authorization, while starting a progress indicator is shown
• Starts in auto pan mode recenter
• Long press to get a context menu
• Switch to navigation mode, any autopan mode, or turn the datasource off
• If the location display fails to start, an warning signal is shown, tapping again will try to start the datasource again
• Panning turns autopan off, tapping the button again will turn on the last autopan mode that the user had selected (barring the off value)

More details

• The context menu is only shown on long press if the count of the auto pan options the user passes in is greater than 1
• The "last selected auto pan mode" starts out with a default value of the first value passed to the initializer in the autoPanOptions that matches a value in this list: .recenter, .compassNavigation, .navigation