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Feat/sortable grid list component (#1918)
* Initial implementation of GridList component based on old GridView * Support orientation change and keepItemSize in GridList * Initial implementation of SortableGridList component * Adjust SortableGridList to work with ScrollView * Update src/components/gridList/gridList.api.json Co-authored-by: Miki Leib <[email protected]> * Move grid list logic to useGridLayout hook and fix code review * Minor fixes * Update src/components/gridList/gridList.api.json Co-authored-by: Lidor Dafna <[email protected]> * Code review fixes * Fix issue with canceling drag before it starts * Code review fixes * Add api json file Co-authored-by: Miki Leib <[email protected]> Co-authored-by: Lidor Dafna <[email protected]>
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‎demo/src/screens/MenuStructure.js

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@@ -113,6 +113,7 @@ export const navigationData = {
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},
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{title: 'Wizard', tags: 'wizard', screen: 'unicorn.components.WizardScreen'},
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{title: 'GridList', tags: 'grid list', screen: 'unicorn.components.GridListScreen'},
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{title: 'SortableGridList', tags: 'sort grid list drag', screen: 'unicorn.components.SortableGridListScreen'},
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{title: 'GridView', tags: 'grid view', screen: 'unicorn.components.GridViewScreen'}
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]
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},

‎demo/src/screens/componentScreens/SortableGridListScreen.tsx

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import React, {Component} from 'react';
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import {StyleSheet} from 'react-native';
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import {
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View,
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Text,
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Constants,
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SortableGridList,
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Card,
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Spacings,
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BorderRadiuses,
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GridListProps,
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SortableGridListProps
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} from 'react-native-ui-lib';
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import products from '../../data/products';
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class SortableGridListScreen extends Component {
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state = {
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orientation: Constants.orientation
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};
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onOrderChange: SortableGridListProps['onOrderChange'] = (_newOrderedData, newOrder) => {
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console.log('newOrder:', newOrder);
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};
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renderItem: GridListProps<typeof products[0]>['renderItem'] = ({item}) => {
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return (
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<Card flex onPress={() => console.log('item press')}>
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<Card.Section imageSource={{uri: item.mediaUrl}} imageStyle={styles.itemImage}/>
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</Card>
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);
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};
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render() {
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return (
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<View flex>
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<Text h1 margin-s5>
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SortableGridList
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</Text>
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<SortableGridList
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data={products}
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renderItem={this.renderItem}
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// numColumns={2}
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maxItemWidth={140}
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itemSpacing={Spacings.s3}
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// itemSpacing={0}
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listPadding={Spacings.s5}
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// keepItemSize
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contentContainerStyle={styles.list}
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onOrderChange={this.onOrderChange}
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/>
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</View>
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);
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}
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}
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const styles = StyleSheet.create({
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list: {
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padding: Spacings.s5
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},
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itemImage: {
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width: '100%',
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// height: 85,
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height: 108.7,
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borderRadius: BorderRadiuses.br10
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}
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});
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export default SortableGridListScreen;

‎demo/src/screens/componentScreens/index.js

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@@ -45,6 +45,7 @@ export function registerScreens(registrar) {
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registrar('unicorn.components.SharedTransitionScreen', () => require('./SharedTransitionScreen').default);
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registrar('unicorn.components.SkeletonViewScreen', () => require('./SkeletonViewScreen').default);
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registrar('unicorn.components.SliderScreen', () => require('./SliderScreen').default);
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registrar('unicorn.components.SortableGridListScreen', () => require('./SortableGridListScreen').default);
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registrar('unicorn.components.StackAggregatorScreen', () => require('./StackAggregatorScreen').default);
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registrar('unicorn.components.StepperScreen', () => require('./StepperScreen').default);
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registrar('unicorn.components.SwitchScreen', () => require('./SwitchScreen').default);

‎generatedTypes/src/components/sortableGridList/SortableItem.d.ts

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import { PropsWithChildren } from 'react';
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import { StyleProp, ViewStyle } from 'react-native';
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import Animated from 'react-native-reanimated';
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import usePresenter, { ItemsOrder } from './usePresenter';
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interface SortableItemProps extends ReturnType<typeof usePresenter> {
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index: number;
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itemsOrder: Animated.SharedValue<ItemsOrder>;
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onChange: () => void;
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style: StyleProp<ViewStyle>;
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}
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declare function SortableItem(props: PropsWithChildren<SortableItemProps>): JSX.Element;
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export default SortableItem;

‎generatedTypes/src/components/sortableGridList/index.d.ts

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/// <reference types="react" />
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import { FlatListProps, ScrollViewProps } from 'react-native';
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import { GridListBaseProps } from '../gridList';
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import { ItemsOrder } from './usePresenter';
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export interface SortableGridListProps<T = any> extends GridListBaseProps, ScrollViewProps {
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data: FlatListProps<T>['data'];
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renderItem: FlatListProps<T>['renderItem'];
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onOrderChange?: (newData: T[], newOrder: ItemsOrder) => void;
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}
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declare function SortableGridList<T = any>(props: SortableGridListProps<T>): JSX.Element;
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export default SortableGridList;

‎generatedTypes/src/components/sortableGridList/usePresenter.d.ts

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export declare const WINDOW_WIDTH: number;
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export declare const DEFAULT_NO_OF_COLUMNS = 3;
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export declare const getItemSize: (numOfColumns: number, viewWidth: number) => number;
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export declare const animationConfig: {
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easing: (value: number) => number;
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duration: number;
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};
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export declare type ItemsLayouts = ({
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width: number;
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height: number;
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} | undefined)[];
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export declare type ItemsOrder = number[];
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declare const usePresenter: (itemsSize: number, numOfColumns: number, itemSpacing: number) => {
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updateItemLayout: (index: number, layout: {
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width: number;
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height: number;
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}) => void;
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getTranslationByOrderChange: (newOrder: number, oldOrder: number) => {
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x: number;
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y: number;
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};
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getOrderByPosition: (positionX: number, positionY: number) => number;
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getItemOrderById: (itemsOrder: ItemsOrder, itemId: number) => number;
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getIdByItemOrder: (itemsOrder: ItemsOrder, orderIndex: number) => number;
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};
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export default usePresenter;

‎src/components/gridList/gridList.api.json

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" maxItemWidth={140$2}",
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" numColumns={2$3}",
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" itemSpacing={Spacings.s3$4}",
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" containerWidth={Constants.screenWidth - (Spacings.s5 * 2)}",
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" contentContainerStyle={{padding: Spacings.s5}}",
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" listPadding={Spacings.s5}",
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"/>"
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]
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}

‎src/components/sortableGridList/SortableItem.tsx

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import React, {PropsWithChildren, useCallback} from 'react';
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import {LayoutChangeEvent, StyleProp, ViewStyle} from 'react-native';
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import {Gesture, GestureDetector} from 'react-native-gesture-handler';
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import Animated, {
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runOnJS,
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useAnimatedReaction,
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useAnimatedStyle,
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useSharedValue,
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withSpring,
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withTiming
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} from 'react-native-reanimated';
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import usePresenter, {ItemsOrder, animationConfig} from './usePresenter';
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import View from '../view';
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interface SortableItemProps extends ReturnType<typeof usePresenter> {
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index: number;
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itemsOrder: Animated.SharedValue<ItemsOrder>;
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onChange: () => void;
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style: StyleProp<ViewStyle>;
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}
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function SortableItem(props: PropsWithChildren<SortableItemProps>) {
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const {
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index,
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itemsOrder,
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onChange,
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style,
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getItemOrderById,
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getOrderByPosition,
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getIdByItemOrder,
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getTranslationByOrderChange,
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updateItemLayout
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} = props;
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const translateX = useSharedValue(0);
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const translateY = useSharedValue(0);
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const isFloating = useSharedValue(false);
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const isDragging = useSharedValue(false);
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const tempItemsOrder = useSharedValue(itemsOrder.value);
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const tempTranslateX = useSharedValue(0);
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const tempTranslateY = useSharedValue(0);
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const onLayout = useCallback((event: LayoutChangeEvent) => {
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'worklet';
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const {width, height} = event.nativeEvent.layout;
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updateItemLayout(index, {width, height});
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}, []);
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useAnimatedReaction(() => itemsOrder.value.indexOf(index), // Note: It doesn't work with the getItemOrderById util
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(newOrder, prevOrder) => {
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if (prevOrder !== null && newOrder !== prevOrder) {
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const translation = getTranslationByOrderChange(newOrder, prevOrder);
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translateX.value = withTiming(translateX.value + translation.x, animationConfig);
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translateY.value = withTiming(translateY.value + translation.y, animationConfig);
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} else if (newOrder === index) {
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translateX.value = withTiming(0, animationConfig);
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translateY.value = withTiming(0, animationConfig);
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}
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});
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const longPressGesture = Gesture.LongPress()
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.onStart(() => {
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isFloating.value = true;
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})
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.onTouchesCancelled(() => {
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if (!isDragging.value) {
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isFloating.value = false;
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}
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})
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.minDuration(250);
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const dragGesture = Gesture.Pan()
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.manualActivation(true)
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.onTouchesMove((_e, state) => {
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if (isFloating.value) {
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isDragging.value = true;
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state.activate();
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} else {
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isDragging.value = false;
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state.fail();
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}
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})
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.onStart(() => {
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tempTranslateX.value = translateX.value;
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tempTranslateY.value = translateY.value;
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tempItemsOrder.value = itemsOrder.value;
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})
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.onUpdate(event => {
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translateX.value = tempTranslateX.value + event.translationX;
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translateY.value = tempTranslateY.value + event.translationY;
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// Swapping items
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const oldOrder = getItemOrderById(itemsOrder.value, index);
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const newOrder = getOrderByPosition(translateX.value, translateY.value) + index;
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if (oldOrder !== newOrder) {
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const itemIdToSwap = getIdByItemOrder(itemsOrder.value, newOrder);
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if (itemIdToSwap !== undefined) {
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const newItemsOrder = [...itemsOrder.value];
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newItemsOrder[newOrder] = index;
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newItemsOrder[oldOrder] = itemIdToSwap;
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itemsOrder.value = newItemsOrder;
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}
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}
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})
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.onEnd(() => {
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const translation = getTranslationByOrderChange(getItemOrderById(itemsOrder.value, index),
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getItemOrderById(tempItemsOrder.value, index));
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translateX.value = withTiming(tempTranslateX.value + translation.x, animationConfig);
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translateY.value = withTiming(tempTranslateY.value + translation.y, animationConfig);
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})
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.onFinalize(() => {
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if (isDragging.value) {
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isDragging.value = false;
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isFloating.value = false;
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if (tempItemsOrder.value.toString() !== itemsOrder.value.toString()) {
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runOnJS(onChange)();
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}
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}
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})
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.simultaneousWithExternalGesture(longPressGesture);
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const gesture = Gesture.Race(dragGesture, longPressGesture);
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const animatedStyle = useAnimatedStyle(() => {
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const scale = withSpring(isFloating.value ? 1.1 : 1);
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const zIndex = isFloating.value ? 100 : withTiming(0, animationConfig);
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return {
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zIndex,
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transform: [{translateX: translateX.value}, {translateY: translateY.value}, {scale}]
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};
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});
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return (
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<View reanimated style={[style, animatedStyle]} onLayout={onLayout}>
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<GestureDetector gesture={gesture}>
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<View>{props.children}</View>
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</GestureDetector>
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</View>
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);
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}
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export default SortableItem;

‎src/components/sortableGridList/index.tsx

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import React, {useCallback} from 'react';
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import {StyleSheet, FlatListProps, ScrollView, ScrollViewProps} from 'react-native';
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import {GestureHandlerRootView} from 'react-native-gesture-handler';
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import {useSharedValue} from 'react-native-reanimated';
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import _ from 'lodash';
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import {GridListBaseProps} from '../gridList';
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import SortableItem from './SortableItem';
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import usePresenter, {ItemsOrder} from './usePresenter';
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import useGridLayout, {DEFAULT_ITEM_SPACINGS, DEFAULT_NUM_COLUMNS} from '../gridList/useGridLayout';
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export interface SortableGridListProps<T = any> extends GridListBaseProps, ScrollViewProps {
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data: FlatListProps<T>['data'];
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renderItem: FlatListProps<T>['renderItem'];
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onOrderChange?: (newData: T[], newOrder: ItemsOrder) => void;
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}
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function SortableGridList<T = any>(props: SortableGridListProps<T>) {
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const {renderItem, onOrderChange, contentContainerStyle, ...others} = props;
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const {itemContainerStyle, numberOfColumns} = useGridLayout(props);
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const {numColumns = DEFAULT_NUM_COLUMNS, itemSpacing = DEFAULT_ITEM_SPACINGS, data} = others;
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const itemsOrder = useSharedValue<number[]>(_.map(props.data, (_v, i) => i));
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// TODO: Get the number of columns from GridList calculation somehow
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const presenter = usePresenter(props.data?.length ?? 0, numColumns, itemSpacing);
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const onChange = useCallback(() => {
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const newData: T[] = [];
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if (data?.length) {
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itemsOrder.value.forEach(itemIndex => {
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newData.push(data[itemIndex]);
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});
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}
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onOrderChange?.(newData, itemsOrder.value);
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}, [onOrderChange, data]);
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const _renderItem = useCallback(({item, index}) => {
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const lastItemInRow = (index + 1) % numberOfColumns === 0;
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return (
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<SortableItem
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key={index}
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{...presenter}
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style={[itemContainerStyle, lastItemInRow && {marginRight: 0}]}
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itemsOrder={itemsOrder}
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index={index}
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onChange={onChange}
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>
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{/* @ts-expect-error */}
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{renderItem({item, index})}
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</SortableItem>
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);
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}, []);
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return (
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<GestureHandlerRootView>
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<ScrollView contentContainerStyle={[styles.listContent, contentContainerStyle]}>
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{data?.map((item, index) => _renderItem({item, index}))}
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</ScrollView>
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</GestureHandlerRootView>
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);
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}
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export default SortableGridList;
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const styles = StyleSheet.create({
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listContent: {
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flexWrap: 'wrap',
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flexDirection: 'row'
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}
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});

‎src/components/sortableGridList/sortableGridList.api.json

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{
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"name": "SortableGridList",
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"category": "layoutsAndTemplates",
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"description": "An sortable grid list (based on GridList component)",
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"notes": "This component supports square items only",
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"extends": ["GridList"],
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"example": "https://github.com/wix/react-native-ui-lib/blob/master/demo/src/screens/componentScreens/SortableGridListScreen.tsx",
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"props": [
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{"name": "data", "type": "any[]", "description": "Data of items"},
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{"name": "renderItem", "type": "FlatListProps['renderItem']", "description": "Custom render item callback"},
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{
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"name": "onOrderChange",
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"type": "(newData: T[], newOrder: ItemsOrder) => void",
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"description": "Order change callback"
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}
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],
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"snippet": [
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"<SortableGridList>",
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" data={items$1}",
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" maxItemWidth={140$2}",
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" itemSpacing={Spacings.s3$3}",
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" listPadding={Spacings.s5}",
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" onOrderChange={$4}",
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"/>"
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]
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}

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