Commit Graph

2 Commits

Author SHA1 Message Date
Valentin Shergin b491e8725a Fabric: ShadowNode::getCommitedState() does not crash now in case if there is no comited state
Summary: `Target` inside the Stage can be empty; in this case, we should not try to extract `ShadowNode` from it.

Reviewed By: JoshuaGross, mdvacca

Differential Revision: D15982479

fbshipit-source-id: 83a4bebadc88b59d7fe77acbdf07e8ce9f2f6be1
2019-06-26 10:05:30 -07:00
Valentin Shergin 802534e611 Fabric: Introducting State, an escape path from unidirectional data flow
Summary:
In React Native there are several use cases where React State is not the only input that affects the component tree. E.g., in case of a <Modal> component, the screen size directly affects the layout of components inside modal; in the case of uncontrolled <TextInput> component, the text inside the input affects the layout of the surrounding components. `State` is a special (legit!) workaround for all those similar cases. Native part of React Native maintains a special shared object between all nodes of the same family and use that during cloning and commits.

See coming commits to know how to use that.

In the near future State will fully replace LocalData concept but for simplicity they both exist for now.

Reviewed By: mdvacca

Differential Revision: D14217184

fbshipit-source-id: 6e018c5b68208d662462013bce0f4e2733d2f673
2019-02-27 00:32:25 -08:00