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Merge pull request #24 from react-navigation/@satya164/on-press

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feat: add defaultHandler argument to tabBarOnPress. fixes #22
This commit is contained in:
Brent Vatne
2018-05-24 11:12:23 -07:00
parent c623620f43
commit 0970f020e1
1 changed files with 31 additions and 14 deletions
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45
packages/tabs/src/utils/createTabNavigator.js
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@@ -70,30 +70,47 @@ export default function createTabNavigator(TabView: React.ComponentType<*>) {
return route.routeName;
};
_handleOnTabPress = ({ route }) => {
_handleTabPress = ({ route }) => {
this._isTabPress = true;
const { descriptors } = this.props;
const descriptor = descriptors[route.key];
const { navigation, options } = descriptor;
const focused = navigation.isFocused();
const defaultHandler = () => {
if (navigation.isFocused()) {
if (route.hasOwnProperty('index') && route.index > 0) {
// If current tab has a nested navigator, pop to top
navigation.dispatch(StackActions.popToTop({ key: route.key }));
} else {
// TODO: do something to scroll to top
}
} else {
this._jumpTo(route.routeName);
}
};
if (options.tabBarOnPress) {
options.tabBarOnPress({ navigation });
} else if (focused && route.hasOwnProperty('index') && route.index > 0) {
navigation.dispatch(StackActions.popToTop({ key: route.key }));
} else if (focused) {
// TODO: do something to scroll to top
options.tabBarOnPress({ navigation, defaultHandler });
} else {
defaultHandler();
}
};
_handleIndexChange = index => {
const { navigation } = this.props;
navigation.dispatch(
NavigationActions.navigate({
routeName: navigation.state.routes[index].routeName,
})
);
if (this._isTabPress) {
this._isTabPress = false;
return;
}
this._jumpTo(this.props.navigation.state.routes[index].routeName);
};
_jumpTo = routeName =>
this.props.navigation.dispatch(NavigationActions.navigate({ routeName }));
_isTabPress: boolean = false;
render() {
const { descriptors, navigation, screenProps } = this.props;
const { state } = navigation;
@@ -111,7 +128,7 @@ export default function createTabNavigator(TabView: React.ComponentType<*>) {
renderIcon={this._renderIcon}
renderScene={this._renderScene}
onIndexChange={this._handleIndexChange}
onTabPress={this._handleOnTabPress}
onTabPress={this._handleTabPress}
navigation={navigation}
descriptors={descriptors}
screenProps={screenProps}