react-native/Libraries/Components/ViewPager/AndroidViewPagerNativeComponent.js
VisibleMarkov ec488dcf63 AndroidViewPagers.js (#22995)
Summary:
[Android][Changed] - All the imports connected to `requireNativeComponent` in `ViewPager` was moved to  a separate file.
Issue in focus: #22990
Pull Request resolved: https://github.com/facebook/react-native/pull/22995

Differential Revision: D13760459

Pulled By: cpojer

fbshipit-source-id: fca1633ce933ea4909ef81d7bbe8123d654e24fb
2019-01-22 05:55:50 -08:00

113 lines
3.4 KiB
JavaScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow
*/
'use strict';
const requireNativeComponent = require('requireNativeComponent');
import type {SyntheticEvent} from 'CoreEventTypes';
import type {NativeComponent} from 'ReactNative';
import type {Node} from 'React';
import type {ViewStyleProp} from 'StyleSheet';
type PageScrollState = 'idle' | 'dragging' | 'settling';
type PageScrollEvent = SyntheticEvent<
$ReadOnly<{|
position: number,
offset: number,
|}>,
>;
type PageScrollStateChangedEvent = SyntheticEvent<
$ReadOnly<{|
pageScrollState: PageScrollState,
|}>,
>;
type PageSelectedEvent = SyntheticEvent<
$ReadOnly<{|
position: number,
|}>,
>;
type NativeProps = $ReadOnly<{|
/**
* Index of initial page that should be selected. Use `setPage` method to
* update the page, and `onPageSelected` to monitor page changes
*/
initialPage?: ?number,
/**
* Executed when transitioning between pages (ether because of animation for
* the requested page change or when user is swiping/dragging between pages)
* The `event.nativeEvent` object for this callback will carry following data:
* - position - index of first page from the left that is currently visible
* - offset - value from range [0,1) describing stage between page transitions.
* Value x means that (1 - x) fraction of the page at "position" index is
* visible, and x fraction of the next page is visible.
*/
onPageScroll?: ?(e: PageScrollEvent) => void,
/**
* Function called when the page scrolling state has changed.
* The page scrolling state can be in 3 states:
* - idle, meaning there is no interaction with the page scroller happening at the time
* - dragging, meaning there is currently an interaction with the page scroller
* - settling, meaning that there was an interaction with the page scroller, and the
* page scroller is now finishing it's closing or opening animation
*/
onPageScrollStateChanged?: ?(e: PageScrollStateChangedEvent) => void,
/**
* This callback will be called once ViewPager finish navigating to selected page
* (when user swipes between pages). The `event.nativeEvent` object passed to this
* callback will have following fields:
* - position - index of page that has been selected
*/
onPageSelected?: ?(e: PageSelectedEvent) => void,
/**
* Blank space to show between pages. This is only visible while scrolling, pages are still
* edge-to-edge.
*/
pageMargin?: ?number,
/**
* Whether enable showing peekFraction or not. If this is true, the preview of
* last and next page will show in current screen. Defaults to false.
*/
peekEnabled?: ?boolean,
/**
* Determines whether the keyboard gets dismissed in response to a drag.
* - 'none' (the default), drags do not dismiss the keyboard.
* - 'on-drag', the keyboard is dismissed when a drag begins.
*/
keyboardDismissMode?: ?('none' | 'on-drag'),
/**
* When false, the content does not scroll.
* The default value is true.
*/
scrollEnabled?: ?boolean,
children?: Node,
style?: ?ViewStyleProp,
|}>;
type ViewPagerNativeType = Class<NativeComponent<NativeProps>>;
module.exports = ((requireNativeComponent(
'AndroidViewPager',
): any): ViewPagerNativeType);