ui.Map.DrawingTools.onShapeChange

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Registers a callback that's fired when a drawing mode shape is changed.

Returns an ID which can be passed to unlisten() to unregister the callback.

UsageReturns
DrawingTools.onShapeChange(callback)String
ArgumentTypeDetails
this: ui.map.drawingtoolsui.Map.DrawingToolsThe ui.Map.DrawingTools instance.
callbackFunctionThe callback to fire when the shape is changed. The callback is passed two parameters: the drawing mode shape as a string (or null for cancel) and the ui.Map.DrawingTools widget that the event listener is bound to. The shape values are:   - point   - line   - polygon   - rectangle   - null