Summary:
Right now when an interaction is recorded on a parent VirtualizedList, the interaction isn't passed on to its children. That means that if `waitForInteraction` is set to true for a child list's viewability helper, it will never trigger a VPV.
This change adds forwarding of these events inside `onBeginScrollDrag`. It also forwards the interaction state of the parent list at register time, in case a child list is rendered mid-scroll.
Reviewed By: sahrens
Differential Revision: D6822091
fbshipit-source-id: dfe300e42722d4285f65787ab2c1368f050c5577
Summary:
Sticky headers for inverted lists should still stick at the top of the list instead of the bottom.
Tested by adding the inverted prop to the SectionList example in RNTester.
It does add a prop to ScrollView but it's very specific to the inverted list implementation, not sure if it should be documented.
[GENERAL][ENHANCEMENT][LISTS] - Support sticky headers for inverted Lists
Closes https://github.com/facebook/react-native/pull/17762
Differential Revision: D6830784
Pulled By: sahrens
fbshipit-source-id: 6841fdd46e04b30547659d85ff54c3a21c61a8a2
Summary:
`renderItem` on `SectionList` is within the `OptionalProps` group of props but it is not actually marked as optional. Which means that doing things such as in the example where each section has its own `renderItem` and no `renderItem` prop is passed into `SectionList` will fail flow.
Create a `SectionList` where each section has it's own `renderItem` and do not pass in a `renderItem` into `SectionList`. Run flow, it should error.
[GENERAL] [MINOR] [SectionList] -Makes `renderItem` prop on `SectionList` optional for flow.
Closes https://github.com/facebook/react-native/pull/17262
Differential Revision: D6645672
Pulled By: hramos
fbshipit-source-id: 1096e8c4998c14003cf42f29ea559505082047c1
Summary:
Setting `windowSize = 0` doesn't make sense. Let's make sure we catch this problem in the constructor so that it doesn't cause inexplicable list behavior.
Also fixed an invariant in `VirtualizeUtils` that is meant to prohibit non-monotonically-increasing offset arrays. As written, the invariant condition can never actually be violated.
Reviewed By: sahrens
Differential Revision: D6625302
fbshipit-source-id: b2a983cbe7bb5fbe0aed7c5d59e69a8a00672993
Summary:
The change enabling virtualization in nested lists contained a hidden assumption that nested lists would only appear within the *cells* of a parent list.
If a list header or footer component contains a `VirtualizedList`, that child list won't be wrapped in a `CellRenderer` component and therefore won't have access to `virtualizedCellRenderer` through its context. This causes an error when the child list tries to access the `cellKey` property on an undefined object.
This change wraps the header/footer views in a `VirtualizedCellWrapper` component which supplies that context properly.
Reviewed By: sahrens
Differential Revision: D6603342
fbshipit-source-id: 4d2d82f04947048a16ec9968121d8ecc8c95655a
Summary:
$FlowFixMe suppressed type validation on _listRef. Add appropriate typing to let Flow succeed when $FlowFixMe is removed.
Not sure what this project's philosophy around ref types is. In some places I've seen them annotated as any rather than trying to get a more granular type to match. I'm open to suggestions.
`yarn flow`
[INTERNAL] [ENHANCEMENT] [FlatList.js] - Remove $FlowFixMe from FlatList
Closes https://github.com/facebook/react-native/pull/16882
Differential Revision: D6386479
Pulled By: hramos
fbshipit-source-id: bed14f2c7071525cb46425ab14214771de0277f3
Summary:
In the current implementation of the `VirtualizedList` the `onViewableItemsChanged` callback wouldn't trigger if the underlying list data changes. (see example snack https://snack.expo.io/Hk5703eBb)
I added a method in the `ViewabilityHelper` to invalidate the cached viewableIndices, which gets triggered when the list-data changes.
Closes https://github.com/facebook/react-native/pull/14922
Differential Revision: D5864537
Pulled By: sahrens
fbshipit-source-id: 37f617763596244208548817d5b138dadc12c75d
Summary: Allows handling the case of wanting to scroll beyond the measured window.
Reviewed By: TheSavior
Differential Revision: D5915331
fbshipit-source-id: 329927632f4d04f213567ce4bbe547b04b8ea86d
Summary:
Previously, the example MyListItem never referenced the selected prop, leaving ambiguity about the intention of the demo.
By adding a concrete implementation with coloring based on the selected prop, we can see that this is a demo of a multi-select list for batch actions instead of, say, a click-to-navigate nested list.
Here is a working Snack demo for future reference:
https://snack.expo.io/BkRMRTGB-
References #14872
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Closes https://github.com/facebook/react-native/pull/14957
Differential Revision: D5892186
Pulled By: sahrens
fbshipit-source-id: c7b46b5f6eae8f36bd4bda7cbbd354cc22108b42
Summary:
Fixing https://github.com/facebook/react-native/issues/13578
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Closes https://github.com/facebook/react-native/pull/15419
Reviewed By: sahrens
Differential Revision: D5795844
Pulled By: tomasreimers
fbshipit-source-id: 4cdf97a2f5e83e38f4e12af771b512e7dddd212a
Summary:
Hi guys,
A small typo found in the doc :)
Closes https://github.com/facebook/react-native/pull/15888
Differential Revision: D5809251
Pulled By: TheSavior
fbshipit-source-id: 7a2ca8f2cbca81aa2059ee619a8c6087256e39a6
Summary: FlatList only supports one viewability configuration and callback. This change extends FlatList and VirtualizedList to support multiple viewability configurations and corresponding callbacks.
Reviewed By: sahrens
Differential Revision: D5720860
fbshipit-source-id: 9d24946362fa9001d44d4980c85f7d2627e45a33
Summary:
I just worked with a fellow dev who was switching to flatlist and ended up pretty surprised at the performance drop. The measurement had an exponential bridge saturation, causing flatlist to lose to a scrollview!
We knew something was up, but a little note in the docs would have helped.
Closes https://github.com/facebook/react-native/pull/15400
Differential Revision: D5579483
Pulled By: sahrens
fbshipit-source-id: 2cc2488b6332db4f4d644c67f180088d3a5874a8
Summary:
What existing problem does the pull request solve?
My motivation was to improve the documentation for ListView and ListViewDataSource because I always have trouble remembering how they work and the documentation was lacking an example for `cloneWithRowsAndSections`
My PR does the following:
* add a note about how headers and footers are rendered on a horizontal ListView
* fix a typo in an example
* clarify that the sectionIdentities should match the keys or array indexes of the data source
* add an example of cloneWithRowsAndSections
* add notes on the return values of `getRowCount` and `getRowAndSectionCount`
n/a; documentation only
Closes https://github.com/facebook/react-native/pull/13811
Differential Revision: D5473192
Pulled By: hramos
fbshipit-source-id: f31fc6edfdeb8dff75d39bbcceda06fd839df934
Summary:
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Closes https://github.com/facebook/react-native/pull/15089
Differential Revision: D5448987
Pulled By: shergin
fbshipit-source-id: eb240517dc94475744f1bda2652f8aff994c0bcd
Summary:
ListView does specify this: https://facebook.github.io/react-native/docs/listview.html#props
The link in ListView is generated by the documentation generator, but because the format of FlatList's props is different, it fails to catch it. Consider finding a way to specify this explicitly to the documentation generator (although this would be a bigger change).
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Closes https://github.com/facebook/react-native/pull/14891
Differential Revision: D5386036
Pulled By: sahrens
fbshipit-source-id: 0b8a685411507cc4d0b781fd39b792d59614ce52
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