1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 | 1x 19x 10x 10x 19x 26x 19x 19x 19x 19x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 10x 8x 8x 8x 8x 8x 8x 8x 13x 8x 8x 11x 8x 8x 8x 2x 2x 5x 5x 5x 2x 3x 5x 1x 1x 1x 1x 1x 16x 18x 1x | /* @flow */ import React from 'react' import { BackHandler } from 'react-native' import { StateUtils } from 'react-navigation' import { type RouterHistory, type Location, withRouter, matchPath } from 'react-router' import type { CardsRendererProps, NavigationState, Card } from './TypeDefinitions' import * as StackUtils from './StackUtils' import * as HistoryUtils from './HistoryUtils' const buildNavigationState = ( location: Location, entries: Array<Location>, cards: Array<Card>, ): NavigationState<{ path?: string, params?: Object, }> => { // Find last route and reproduce actual route stack // Fix > https://github.com/LeoLeBras/react-router-navigation/issues/37 const lastRouteIndex = entries.findIndex(entry => entry.pathname === location.pathname) const initialEntries = entries.slice(0, lastRouteIndex + 1) // $FlowFixMe return initialEntries.reduce( (state, entry) => { const card = cards.find(({ path, exact, strict }) => { return matchPath(entry.pathname, { path, exact, strict }) }) Iif (!card || !card.path) return state const route = StackUtils.getRoute(cards, entry) Iif (!route) return { index: -1, routes: [] } return { index: matchPath(location.pathname, card) ? state.routes.length : state.index, routes: [...state.routes, route], } }, { index: -1, routes: [] }, ) } type State = { key: number, navigationState: NavigationState<{ path?: string, params?: Object, }>, cards: Array<Card>, } type Props = { history: RouterHistory, // eslint-disable-next-line children?: React$Node, render: (props: CardsRendererProps) => React$Element<any>, } class CardStack extends React.Component<Props, State> { props: Props state: State unlistenHistory: Function constructor(props: Props) { super(props) // Build the card stack const { children, history: { entries, index, location } } = props const cards = children && StackUtils.build(children) // CardStack can be mount ? Iif (!cards) { throw new Error('No initial route found') } Iif (!entries || index === undefined) { throw new Error('No history entries found') } // Build navigation state const navigationState = buildNavigationState(location, entries, cards) // Set key const key = 0 // Save everything in component state this.state = { navigationState, cards, key } } // Listen hardware BackHandler event + history event componentDidMount() { const { history } = this.props this.unlistenHistory = HistoryUtils.runHistoryListenner(history, this.onListenHistory) BackHandler.addEventListener('hardwareBackPress', this.onNavigateBack) } // Remove all listeners componentWillUnmount() { this.unlistenHistory() BackHandler.removeEventListener('hardwareBackPress', this.onNavigateBack) } // Update cards componentWillReceiveProps(nextProps: Props) { const { children } = this.props const { children: nextChildren, history: { entries, location } } = nextProps Iif (children !== nextChildren && entries) { const nextCards = nextChildren && StackUtils.build(nextChildren) if (nextCards) { const newNavigationState = buildNavigationState(location, entries, nextCards) this.setState(prevState => ({ key: prevState.key + 1, cards: nextCards, navigationState: newNavigationState, })) } } } // Update navigation state onListenHistory = (history: RouterHistory, nextHistory: RouterHistory) => { const { location, entries, index } = history const { location: nextLocation, action, index: nextIndex } = nextHistory const { navigationState, cards } = this.state // Get current card const currentRoute = navigationState.routes[navigationState.index] const currentCard = cards.find(({ key }) => key === currentRoute.routeName) // Get next card const nextRoute = StackUtils.getRoute(cards, nextLocation) Iif (!nextRoute) return const nextCard = cards.find(({ key }) => key === nextRoute.routeName) // Local state must be updated ? Eif ( currentCard && nextCard && StackUtils.shouldUpdate(currentCard, nextCard, location, nextLocation) ) { const key = StackUtils.createKey(nextRoute) switch (action) { case 'PUSH': { this.setState(state => ({ navigationState: StateUtils.push(state.navigationState, { ...nextRoute, key, }), })) break } case 'POP': { Iif (index === undefined || nextIndex === undefined || entries === undefined) { return } const n = index - nextIndex if (n > 1) { this.setState(state => ({ navigationState: StateUtils.reset( state.navigationState, state.navigationState.routes.slice( 0, // eslint-disable-next-line state.navigationState.index - n + 1, ), state.navigationState.index - n, ), })) } else { this.setState(state => ({ navigationState: StateUtils.pop(state.navigationState), })) } break } case 'REPLACE': { this.setState(state => ({ navigationState: StateUtils.replaceAtIndex( state.navigationState, state.navigationState.index, { ...nextRoute, key }, ), })) break } default: } } } // Pop to previous scene (n-1) onNavigateBack = () => { Eif (this.state.navigationState.index > 0) { this.props.history.goBack() return true } return false } shouldComponentUpdate(nextProps: Props, nextState: State) { return ( this.state.key !== nextState.key || this.state.cards !== nextState.cards || this.state.navigationState !== nextState.navigationState ) } render() { return this.props.render({ ...this.state, onNavigateBack: this.onNavigateBack, }) } } const CardStackWithHistory = withRouter(CardStack) export default CardStackWithHistory |