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import { usePrevious } from '@wordpress/compose';
import { useCallback, useEffect, useRef } from 'react';
import AsyncLoad from 'calypso/components/async-load';
import { useSelector, useDispatch } from 'calypso/state';
import { recordTracksEvent } from 'calypso/state/analytics/actions';
import getCurrentRoute from 'calypso/state/selectors/get-current-route';
import getUnseenCount from 'calypso/state/selectors/get-notification-unseen-count';
import getIsNotificationsOpen from 'calypso/state/selectors/is-notifications-open';
import { toggleNotificationsPanel } from 'calypso/state/ui/actions';
import type { AppState } from 'calypso/types';
import './style.scss';
const GlobalNotifications = () => {
const isNotificationsOpen = useSelector( ( state: AppState ) => getIsNotificationsOpen( state ) );
const isNotificationsOpenRef = useRef( isNotificationsOpen );
const prevIsNotificationsOpen = usePrevious( isNotificationsOpen );
const unseenCount = useSelector( ( state: AppState ) => getUnseenCount( state ) );
const containerRef = useRef< HTMLDivElement >( null );
const currentRoute = useSelector( getCurrentRoute );
const dispatch = useDispatch();
const toggleNotesFrame = useCallback( ( event: MouseEvent | null ) => {
if ( event ) {
event.preventDefault && event.preventDefault();
event.stopPropagation && event.stopPropagation();
}
// Get URL and if it matches "/reader/notifications", don't open the panel
// As it will cause duplicate notification panels to show
if ( window.location.pathname === '/reader/notifications' ) {
return;
}
dispatch( toggleNotificationsPanel() );
}, [] );
// This toggle gets called both on the calypso and panel sides. Throttle it to prevent calls on
// both sides from conflicting and cancelling each other out.
const checkToggleNotes = useCallback(
( event: MouseEvent | null, forceToggle = false, forceOpen = false ) => {
const target = event ? event.target : false;
// Ignore clicks or other events which occur inside of the notification panel.
if ( target && containerRef.current?.contains( target as Node ) ) {
return;
}
// Prevent toggling closed if we are opting to open.
if ( forceOpen && isNotificationsOpenRef.current ) {
return;
}
if ( isNotificationsOpenRef.current || forceToggle === true || forceOpen === true ) {
toggleNotesFrame( event );
}
},
[ containerRef, isNotificationsOpenRef, toggleNotesFrame ]
);
isNotificationsOpenRef.current = isNotificationsOpen;
/**
* Record the unseen count when the notification opens.
*/
useEffect( () => {
if ( ! prevIsNotificationsOpen && isNotificationsOpen ) {
dispatch(
recordTracksEvent( 'calypso_notification_open', {
unread_notifications: unseenCount,
} )
);
}
}, [ prevIsNotificationsOpen, isNotificationsOpen, unseenCount, dispatch ] );
// Get URL and if it matches "/reader/notifications", don't render the global notifications panel.
// As it will cause duplicate notification store listeners to be registered.
if ( currentRoute === '/reader/notifications' ) {
return null;
}
return (
<div className="global-notifications" ref={ containerRef }>
<AsyncLoad
require="calypso/notifications"
isShowing={ isNotificationsOpen }
checkToggle={ checkToggleNotes }
placeholder={ null }
/>
</div>
);
};
export default GlobalNotifications;
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