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import React from 'react' ;
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import { connect } from 'react-redux' ;
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import PropTypes from 'prop-types' ;
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import ImmutablePropTypes from 'react-immutable-proptypes' ;
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import Column from '../../components/column' ;
import ColumnHeader from '../../components/column_header' ;
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import { expandNotifications , scrollTopNotifications } from '../../actions/notifications' ;
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import { addColumn , removeColumn , moveColumn } from '../../actions/columns' ;
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import NotificationContainer from './containers/notification_container' ;
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import { defineMessages , injectIntl , FormattedMessage } from 'react-intl' ;
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import ColumnSettingsContainer from './containers/column_settings_container' ;
import { createSelector } from 'reselect' ;
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import { List as ImmutableList } from 'immutable' ;
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import { debounce } from 'lodash' ;
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import ScrollableList from '../../components/scrollable_list' ;
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import LoadGap from '../../components/load_gap' ;
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const messages = defineMessages ( {
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title : { id : 'column.notifications' , defaultMessage : 'Notifications' } ,
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} ) ;
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const getNotifications = createSelector ( [
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state => ImmutableList ( state . getIn ( [ 'settings' , 'notifications' , 'shows' ] ) . filter ( item => ! item ) . keys ( ) ) ,
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state => state . getIn ( [ 'notifications' , 'items' ] ) ,
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] , ( excludedTypes , notifications ) => notifications . filterNot ( item => item !== null && excludedTypes . includes ( item . get ( 'type' ) ) ) ) ;
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const mapStateToProps = state => ( {
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notifications : getNotifications ( state ) ,
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isLoading : state . getIn ( [ 'notifications' , 'isLoading' ] , true ) ,
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isUnread : state . getIn ( [ 'notifications' , 'unread' ] ) > 0 ,
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hasMore : state . getIn ( [ 'notifications' , 'hasMore' ] ) ,
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} ) ;
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@ connect ( mapStateToProps )
@ injectIntl
export default class Notifications extends React . PureComponent {
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static propTypes = {
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columnId : PropTypes . string ,
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notifications : ImmutablePropTypes . list . isRequired ,
dispatch : PropTypes . func . isRequired ,
shouldUpdateScroll : PropTypes . func ,
intl : PropTypes . object . isRequired ,
isLoading : PropTypes . bool ,
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isUnread : PropTypes . bool ,
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multiColumn : PropTypes . bool ,
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hasMore : PropTypes . bool ,
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} ;
static defaultProps = {
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trackScroll : true ,
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} ;
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componentWillUnmount ( ) {
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this . handleLoadOlder . cancel ( ) ;
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this . handleScrollToTop . cancel ( ) ;
this . handleScroll . cancel ( ) ;
this . props . dispatch ( scrollTopNotifications ( false ) ) ;
}
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handleLoadGap = ( maxId ) => {
this . props . dispatch ( expandNotifications ( { maxId } ) ) ;
} ;
handleLoadOlder = debounce ( ( ) => {
const last = this . props . notifications . last ( ) ;
this . props . dispatch ( expandNotifications ( { maxId : last && last . get ( 'id' ) } ) ) ;
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} , 300 , { leading : true } ) ;
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handleScrollToTop = debounce ( ( ) => {
this . props . dispatch ( scrollTopNotifications ( true ) ) ;
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} , 100 ) ;
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handleScroll = debounce ( ( ) => {
this . props . dispatch ( scrollTopNotifications ( false ) ) ;
} , 100 ) ;
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handlePin = ( ) => {
const { columnId , dispatch } = this . props ;
if ( columnId ) {
dispatch ( removeColumn ( columnId ) ) ;
} else {
dispatch ( addColumn ( 'NOTIFICATIONS' , { } ) ) ;
}
}
handleMove = ( dir ) => {
const { columnId , dispatch } = this . props ;
dispatch ( moveColumn ( columnId , dir ) ) ;
}
handleHeaderClick = ( ) => {
this . column . scrollTop ( ) ;
}
setColumnRef = c => {
this . column = c ;
}
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handleMoveUp = id => {
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const elementIndex = this . props . notifications . findIndex ( item => item !== null && item . get ( 'id' ) === id ) - 1 ;
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this . _selectChild ( elementIndex ) ;
}
handleMoveDown = id => {
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const elementIndex = this . props . notifications . findIndex ( item => item !== null && item . get ( 'id' ) === id ) + 1 ;
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this . _selectChild ( elementIndex ) ;
}
_selectChild ( index ) {
const element = this . column . node . querySelector ( ` article:nth-of-type( ${ index + 1 } ) .focusable ` ) ;
if ( element ) {
element . focus ( ) ;
}
}
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render ( ) {
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const { intl , notifications , shouldUpdateScroll , isLoading , isUnread , columnId , multiColumn , hasMore } = this . props ;
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const pinned = ! ! columnId ;
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const emptyMessage = < FormattedMessage id = 'empty_column.notifications' defaultMessage = "You don't have any notifications yet. Interact with others to start the conversation." / > ;
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let scrollableContent = null ;
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if ( isLoading && this . scrollableContent ) {
scrollableContent = this . scrollableContent ;
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} else if ( notifications . size > 0 || hasMore ) {
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scrollableContent = notifications . map ( ( item , index ) => item === null ? (
< LoadGap
key = { 'gap:' + notifications . getIn ( [ index + 1 , 'id' ] ) }
disabled = { isLoading }
maxId = { index > 0 ? notifications . getIn ( [ index - 1 , 'id' ] ) : null }
onClick = { this . handleLoadGap }
/ >
) : (
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< NotificationContainer
key = { item . get ( 'id' ) }
notification = { item }
accountId = { item . get ( 'account' ) }
onMoveUp = { this . handleMoveUp }
onMoveDown = { this . handleMoveDown }
/ >
) ) ;
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} else {
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scrollableContent = null ;
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}
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this . scrollableContent = scrollableContent ;
const scrollContainer = (
< ScrollableList
scrollKey = { ` notifications- ${ columnId } ` }
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trackScroll = { ! pinned }
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isLoading = { isLoading }
hasMore = { hasMore }
emptyMessage = { emptyMessage }
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onLoadMore = { this . handleLoadOlder }
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onScrollToTop = { this . handleScrollToTop }
onScroll = { this . handleScroll }
shouldUpdateScroll = { shouldUpdateScroll }
>
{ scrollableContent }
< / S c r o l l a b l e L i s t >
) ;
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return (
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< Column ref = { this . setColumnRef } >
< ColumnHeader
icon = 'bell'
active = { isUnread }
title = { intl . formatMessage ( messages . title ) }
onPin = { this . handlePin }
onMove = { this . handleMove }
onClick = { this . handleHeaderClick }
pinned = { pinned }
multiColumn = { multiColumn }
>
< ColumnSettingsContainer / >
< / C o l u m n H e a d e r >
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{ scrollContainer }
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< / C o l u m n >
) ;
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}
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}