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joplin/ReactNativeClient/lib/components/app-nav.js
2019-07-29 15:58:33 +02:00

89 lines
3.0 KiB
JavaScript

const React = require('react');
const Component = React.Component;
const { connect } = require('react-redux');
const { NotesScreen } = require('lib/components/screens/notes.js');
const { SearchScreen } = require('lib/components/screens/search.js');
const { KeyboardAvoidingView, Keyboard, Platform, View } = require('react-native');
const { themeStyle } = require('lib/components/global-style.js');
class AppNavComponent extends Component {
constructor() {
super();
this.previousRouteName_ = null;
this.state = {
autoCompletionBarExtraHeight: 0, // Extra padding for the auto completion bar at the top of the keyboard
};
}
UNSAFE_componentWillMount() {
if (Platform.OS === 'ios') {
this.keyboardDidShowListener = Keyboard.addListener('keyboardDidShow', this.keyboardDidShow.bind(this));
this.keyboardDidHideListener = Keyboard.addListener('keyboardDidHide', this.keyboardDidHide.bind(this));
}
}
componentWillUnmount() {
if (this.keyboardDidShowListener) this.keyboardDidShowListener.remove();
if (this.keyboardDidHideListener) this.keyboardDidHideListener.remove();
this.keyboardDidShowListener = null;
this.keyboardDidHideListener = null;
}
keyboardDidShow() {
this.setState({ autoCompletionBarExtraHeight: 30 });
}
keyboardDidHide() {
this.setState({ autoCompletionBarExtraHeight: 0 });
}
render() {
if (!this.props.route) throw new Error('Route must not be null');
// Note: certain screens are kept into memory, in particular Notes and Search
// so that the scroll position is not lost when the user navigate away from them.
let route = this.props.route;
let Screen = null;
let notesScreenVisible = false;
let searchScreenVisible = false;
if (route.routeName == 'Notes') {
notesScreenVisible = true;
} else if (route.routeName == 'Search') {
searchScreenVisible = true;
} else {
Screen = this.props.screens[route.routeName].screen;
}
// Keep the search screen loaded if the user is viewing a note from that search screen
// so that if the back button is pressed, the screen is still loaded. However, unload
// it if navigating away.
let searchScreenLoaded = searchScreenVisible || (this.previousRouteName_ == 'Search' && route.routeName == 'Note');
this.previousRouteName_ = route.routeName;
const theme = themeStyle(this.props.theme);
const style = { flex: 1, backgroundColor: theme.backgroundColor };
return (
<KeyboardAvoidingView behavior={Platform.OS === 'ios' ? 'padding' : null} style={style}>
<NotesScreen visible={notesScreenVisible} navigation={{ state: route }} />
{searchScreenLoaded && <SearchScreen visible={searchScreenVisible} navigation={{ state: route }} />}
{!notesScreenVisible && !searchScreenVisible && <Screen navigation={{ state: route }} />}
<View style={{ height: this.state.autoCompletionBarExtraHeight }} />
</KeyboardAvoidingView>
);
}
}
const AppNav = connect(state => {
return {
route: state.route,
theme: state.settings.theme,
};
})(AppNavComponent);
module.exports = { AppNav };