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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 | 3x 3x 3x 3x 3x 3x 3x 9x 9x 3x 4x 3x 3x 3x 3x 3x 3x 3x 3x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 1x 1x 1x 1x 5x 1x | /* @flow */ import React from 'react' import { type RouterHistory, type Location, withRouter } from 'react-router' import type { NavigationState, TabsRendererProps, Tab } from './TypeDefinitions' import * as StackUtils from './StackUtils' import * as HistoryUtils from './HistoryUtils' type Props = { history: RouterHistory, // eslint-disable-next-line children?: Array<React$Element<*>>, render: (props: TabsRendererProps) => React$Element<*>, // eslint-disable-next-line lazy?: boolean, forceSync?: boolean, } type State = { navigationState: NavigationState<{ title?: string, testID?: string, }>, tabs: Array<Tab>, loadedTabs: Array<string>, rootIndex: number, tabsHistory: { [key: number]: Array<Location> }, } class TabStack extends React.PureComponent<Props, State> { static defaultProps = { forceSync: false, } unlistenHistory: ?Function constructor(props: Props) { super(props) // Build the tab stack const { children, history: { location, entries } } = props const tabs = children && StackUtils.build(children) Iif (!tabs) throw new Error('No children found') // Get initial route const currentRoute = StackUtils.getRoute(tabs, location) Iif (!currentRoute) throw new Error('No initial route found !') // Build navigation state const routes = tabs.map(tab => { const route = { key: tab.key, routeName: tab.path || '', } return { ...route, key: StackUtils.createKey(route), } }) const index = routes.findIndex( ({ routeName }) => currentRoute.routeName === routeName, ) const navigationState = { index, routes } const rootIndex = props.history.index || 0 // Initialyze cached history Iif (!entries) throw new Error('No history entries found') const tabsHistory = { [index]: entries.slice(props.history.index), } // Initialize loaded tabs const loadedTabs = [currentRoute.routeName] // Save everything this.state = { navigationState, tabs, rootIndex, tabsHistory, loadedTabs } } componentDidMount() { const { history } = this.props this.unlistenHistory = HistoryUtils.runHistoryListenner( history, this.onListenHistory, ) } componentWillUnmount() { if (this.unlistenHistory) this.unlistenHistory() } componentWillReceiveProps(nextProps: Props) { const { children } = nextProps const { tabs } = this.state const nextTabs = children && StackUtils.build(children, tabs) this.setState({ tabs: nextTabs }) } onListenHistory = (history: RouterHistory, nextHistory: RouterHistory) => { // Extract props const { location } = history const { location: nextLocation, entries, index } = nextHistory const { navigationState, tabs, rootIndex } = this.state // Get current tab const currentRoute = navigationState.routes[navigationState.index] const currentTab = StackUtils.get(tabs, currentRoute) // Get next tab const nextRoute = StackUtils.getRoute(tabs, nextLocation) Iif (!nextRoute) return const nextTab = StackUtils.get(tabs, nextRoute) const nextIndex = navigationState.routes.findIndex(({ routeName }) => { return routeName === nextRoute.routeName }) // Update navigation state Eif ( currentTab && nextTab && StackUtils.shouldUpdate(currentTab, nextTab, location, nextLocation) ) { this.setState(prevState => ({ navigationState: { index: nextIndex, routes: prevState.navigationState.routes, }, loadedTabs: prevState.loadedTabs.includes(nextRoute.routeName) ? prevState.loadedTabs : [...prevState.loadedTabs, nextRoute.routeName], })) } // Save history Eif ( nextRoute && entries && index !== undefined && entries[index] && nextLocation.pathname === entries[index].pathname ) { this.state.tabsHistory[nextIndex] = entries.slice(rootIndex, index + 1) } } onIndexChange = (index: number) => { if (index < 0) return const { lazy, forceSync, history: { entries, index: historyIndex }, } = this.props const { navigationState, tabsHistory, tabs, rootIndex } = this.state if (index !== navigationState.index) { // 1) Set index directly if (!lazy || tabsHistory[index]) { this.setState(prevState => ({ navigationState: { ...prevState.navigationState, index, }, })) } // 2) Resync history if needed if (forceSync && entries) { // Re-build hisstory const newEntries = tabsHistory[index] ? [...entries.slice(0, rootIndex), ...tabsHistory[index]] : entries.slice(0, rootIndex + 1) const newIndex = tabsHistory[index] ? newEntries.length - 1 : rootIndex // Save it this.props.history.entries = [...newEntries] this.props.history.location = { ...newEntries[newIndex] } this.props.history.index = newIndex this.props.history.length = newEntries.length } // 3) Prevent history of changes // Warning: we must deal with this king of thing: // const App = () => ( // <Tabs> // <Tab // path="/hello" // /> // <Tab // path="/:params" // onIndexChange={({ history }) => history.push('/one')} // /> // </Tabs> // ) if (!tabsHistory[index]) { const entry = tabs[index] if (entry.onIndexChange) { entry.onIndexChange(index) } else if (entry.path) { this.props.history.replace(entry.path) } } else { const entry = tabsHistory[index].slice(-1)[0] this.props.history.replace(entry.pathname, entry.state) } } else { // 4) Reset tab const tab = tabs[index] const n = rootIndex - (historyIndex || 0) if (n < 0) { this.props.history.go(n) } else { const props = { ...this.props, ...tab } if (props.onReset) props.onReset(props) } } } // Render view render() { return this.props.render({ ...this.state, history: this.props.history, onIndexChange: this.onIndexChange, }) } } const TabStackWithHistory = withRouter(TabStack) export default TabStackWithHistory |