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