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FlatList export scrollTo function #13174

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FlatList export scrollTo function #13174

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89be6c6
export scrollTo function
guanpy Mar 28, 2017
f3bb78c
export scrollTo function
guanpy Mar 28, 2017
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10 changes: 9 additions & 1 deletion Libraries/Lists/FlatList.js
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Original file line number Diff line number Diff line change
Expand Up @@ -173,7 +173,15 @@ class FlatList<ItemT> extends React.PureComponent<DefaultProps, Props<ItemT>, vo
scrollToEnd(params?: ?{animated?: ?boolean}) {
this._listRef.scrollToEnd(params);
}

/**
* Scrolls to a given x, y offset, either immediately or with a smooth animation.
*
* See `ScrollView#scrollTo`.
*/
scrollTo(...args: Array<mixed>) {
if (this._listRef && this._listRef.scrollTo) {
this._listRef.scrollTo(...args);
}
/**
* Scrolls to the item at a the specified index such that it is positioned in the viewable area
* such that `viewPosition` 0 places it at the top, 1 at the bottom, and 0.5 centered in the
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11 changes: 10 additions & 1 deletion Libraries/Lists/VirtualizedList.js
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Expand Up @@ -170,7 +170,16 @@ class VirtualizedList extends React.PureComponent<OptionalProps, Props, State> {
this.props.horizontal ? {x: offset, animated} : {y: offset, animated}
);
}

/**
* Scrolls to a given x, y offset, either immediately or with a smooth animation.
*
* See `ScrollView#scrollTo`.
*/
scrollTo(...args: Array<mixed>) {
if (this._scrollRef && this._scrollRef.scrollTo) {
this._scrollRef.scrollTo(...args);
}
}
// scrollToIndex may be janky without getItemLayout prop
scrollToIndex(params: {animated?: ?boolean, index: number, viewPosition?: number}) {
const {data, horizontal, getItemCount, getItemLayout} = this.props;
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