jiti-meet/react/features/mobile/back-button/middleware.js

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2019-07-11 11:32:17 +00:00
// @flow
import { BackHandler } from 'react-native';
import { APP_WILL_MOUNT, APP_WILL_UNMOUNT } from '../../base/app';
import { MiddlewareRegistry } from '../../base/redux';
import BackButtonRegistry from './BackButtonRegistry';
// Binding function to the proper instance, so then the event emitter won't replace the
// underlying instance.
BackButtonRegistry.onHardwareBackPress = BackButtonRegistry.onHardwareBackPress.bind(BackButtonRegistry);
/**
* Middleware that captures App lifetime actions and subscribes to application
* state changes. When the application state changes it will fire the action
* required to mute or unmute the local video in case the application goes to
* the background or comes back from it.
*
* @param {Store} store - The redux store.
* @returns {Function}
* @see {@link https://facebook.github.io/react-native/docs/appstate.html}
*/
MiddlewareRegistry.register(() => next => action => {
switch (action.type) {
case APP_WILL_MOUNT:
BackHandler.addEventListener('hardwareBackPress', BackButtonRegistry.onHardwareBackPress);
break;
case APP_WILL_UNMOUNT:
BackHandler.removeEventListener('hardwareBackPress', BackButtonRegistry.onHardwareBackPress);
break;
}
return next(action);
});