Aleksi Hietanen
6783bca88d
Add initial implementation of TreeGrid (#8572)
* Add initial implementation of TreeGrid
* Refactor TreeGrid and related classes
* Fix potential class cast exception in TreeGrid#getDataProvider
* Add smoke tests for TreeGrid
* Add communication constants for TreeGrid
Use shared constant values for hierarchy data serialization and deserialization
* Fix event ordering in TreeGrid, add javadocs, keyboard navigation test
* TreeGrid improvements
* Add TreeGrid.getDataProvider to StateGetDoesNotMarkDirtyTest exclude list
* Merge remote-tracking branch 'github/master' into tree-grid
* Remove getEscalator override from TreeGrid