Add cell hit testing to datagrid

phosphorjs / phosphor

The PhosphorJS Library

BSD 3-Clause "New" or "Revised" License

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Add cell hit testing to datagrid #400

Closed kaiayoung closed 5 years ago

kaiayoung commented 5 years ago

Adds hit testing for column headers, row headers, corner headers, and cells.
Adds cellClick signal to allow other components to respond to detected clicks on grid elements.

sccolbert commented 5 years ago

I'm working on the datagrid behind the scenes right now. I will be handling events in a different way than the approach in this PR. While I certainly appreciate your contribution(!), it's the not the direction I want to take the datagrid from an architectural perspective. Cheers!