Summary: Optimize ScrollView by adding flag "DEPRECATED_sendUpdatedChildFrames" to gate whether updatedChildFrames data is computed and propagated on scroll events. The frame data is used in ListView by the onChangeVisibleRows prop. When this prop is not defined, unnecessary computation in ScrollView should not be performed.
Reviewed By: sahrens
Differential Revision: D5174898
fbshipit-source-id: e3eaed8760b76becf14dfeb00122bdebdaeae4ef
Summary:
Flashing scroll indicators is a standard behavior on iOS to show the user there's more content.
Launch RNTester on iOS, go to the ScrollView section, tap the "Flash scroll indicators" button.
You'll see this:
I've exposed the method `flashScrollIndicators` on all scrolling components that were already exposing a `scrollToXXX` method so it's usable from those components using a ref.
Let me know what you think.
Closes https://github.com/facebook/react-native/pull/14058
Differential Revision: D5103239
Pulled By: shergin
fbshipit-source-id: caad8474fbe475065418d771b17e4ea9766ffcdc
Summary:
When ListViews has multiple sections, then rowIDs are required to be unique per section.
However the ListViewMock required rowIDs to be unique per whole list.
This change fixes the limitation of ListViewMock.
Closes https://github.com/facebook/react-native/pull/13642
Differential Revision: D5189675
Pulled By: shergin
fbshipit-source-id: 8a4fb68feb74af3307407d6d70f3f6642f50452a
