95 lines
4.6 KiB
JavaScript
95 lines
4.6 KiB
JavaScript
"use strict";
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.default = useScrollToTop;
|
|
var _core = require("@react-navigation/core");
|
|
var React = _interopRequireWildcard(require("react"));
|
|
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
|
|
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
|
|
function getScrollableNode(ref) {
|
|
if (ref.current == null) {
|
|
return null;
|
|
}
|
|
if ('scrollToTop' in ref.current || 'scrollTo' in ref.current || 'scrollToOffset' in ref.current || 'scrollResponderScrollTo' in ref.current) {
|
|
// This is already a scrollable node.
|
|
return ref.current;
|
|
} else if ('getScrollResponder' in ref.current) {
|
|
// If the view is a wrapper like FlatList, SectionList etc.
|
|
// We need to use `getScrollResponder` to get access to the scroll responder
|
|
return ref.current.getScrollResponder();
|
|
} else if ('getNode' in ref.current) {
|
|
// When a `ScrollView` is wraped in `Animated.createAnimatedComponent`
|
|
// we need to use `getNode` to get the ref to the actual scrollview.
|
|
// Note that `getNode` is deprecated in newer versions of react-native
|
|
// this is why we check if we already have a scrollable node above.
|
|
return ref.current.getNode();
|
|
} else {
|
|
return ref.current;
|
|
}
|
|
}
|
|
function useScrollToTop(ref) {
|
|
const navigation = (0, _core.useNavigation)();
|
|
const route = (0, _core.useRoute)();
|
|
React.useEffect(() => {
|
|
let tabNavigations = [];
|
|
let currentNavigation = navigation;
|
|
|
|
// If the screen is nested inside multiple tab navigators, we should scroll to top for any of them
|
|
// So we need to find all the parent tab navigators and add the listeners there
|
|
while (currentNavigation) {
|
|
if (currentNavigation.getState().type === 'tab') {
|
|
tabNavigations.push(currentNavigation);
|
|
}
|
|
currentNavigation = currentNavigation.getParent();
|
|
}
|
|
if (tabNavigations.length === 0) {
|
|
return;
|
|
}
|
|
const unsubscribers = tabNavigations.map(tab => {
|
|
return tab.addListener(
|
|
// We don't wanna import tab types here to avoid extra deps
|
|
// in addition, there are multiple tab implementations
|
|
// @ts-expect-error
|
|
'tabPress', e => {
|
|
// We should scroll to top only when the screen is focused
|
|
const isFocused = navigation.isFocused();
|
|
|
|
// In a nested stack navigator, tab press resets the stack to first screen
|
|
// So we should scroll to top only when we are on first screen
|
|
const isFirst = tabNavigations.includes(navigation) || navigation.getState().routes[0].key === route.key;
|
|
|
|
// Run the operation in the next frame so we're sure all listeners have been run
|
|
// This is necessary to know if preventDefault() has been called
|
|
requestAnimationFrame(() => {
|
|
const scrollable = getScrollableNode(ref);
|
|
if (isFocused && isFirst && scrollable && !e.defaultPrevented) {
|
|
if ('scrollToTop' in scrollable) {
|
|
scrollable.scrollToTop();
|
|
} else if ('scrollTo' in scrollable) {
|
|
scrollable.scrollTo({
|
|
y: 0,
|
|
animated: true
|
|
});
|
|
} else if ('scrollToOffset' in scrollable) {
|
|
scrollable.scrollToOffset({
|
|
offset: 0,
|
|
animated: true
|
|
});
|
|
} else if ('scrollResponderScrollTo' in scrollable) {
|
|
scrollable.scrollResponderScrollTo({
|
|
y: 0,
|
|
animated: true
|
|
});
|
|
}
|
|
}
|
|
});
|
|
});
|
|
});
|
|
return () => {
|
|
unsubscribers.forEach(unsubscribe => unsubscribe());
|
|
};
|
|
}, [navigation, ref, route.key]);
|
|
}
|
|
//# sourceMappingURL=useScrollToTop.js.map
|