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75 lines
2.2 KiB
TypeScript
75 lines
2.2 KiB
TypeScript
import React, { useContext, useLayoutEffect } from 'react';
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import { useSelector } from 'react-redux';
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import styled from 'styled-components';
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import { getQuotedMessageToAnimate } from '../../state/selectors/conversations';
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import { ScrollToLoadedMessageContext } from './SessionMessagesListContainer';
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const LastSeenBarContainer = styled.div`
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padding-bottom: 35px;
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max-width: 300px;
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align-self: center;
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padding-top: 28px;
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display: flex;
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flex-direction: row;
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align-items: center;
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`;
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const LastSeenBar = styled.div`
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height: 2px;
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background-color: var(--color-last-seen-indicator);
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flex-grow: 1;
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min-width: 60px;
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flex-shrink: 0;
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`;
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const LastSeenText = styled.div`
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margin-top: 3px;
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font-size: var(--font-size-xs);
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line-height: 26px;
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letter-spacing: 0.3px;
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text-transform: uppercase;
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text-align: center;
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flex-shrink: 0;
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margin-inline: 1rem;
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color: var(--color-last-seen-indicator);
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`;
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export const SessionLastSeenIndicator = (props: {
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messageId: string;
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didScroll: boolean;
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setDidScroll: (scroll: boolean) => void;
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}) => {
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// if this unread-indicator is not unique it's going to cause issues
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const quotedMessageToAnimate = useSelector(getQuotedMessageToAnimate);
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const scrollToLoadedMessage = useContext(ScrollToLoadedMessageContext);
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const { messageId, didScroll, setDidScroll } = props;
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/**
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* If this unread-indicator is rendered, we want to scroll here only if:
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* 1. the conversation was not opened to a specific message (quoted message)
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* 2. we already scrolled to this unread banner once for this convo https://github.com/oxen-io/session-desktop/issues/2308
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*
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* To achieve 2. we store the didScroll state in the parent and track the last rendered conversation in it.
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*/
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useLayoutEffect(() => {
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if (!quotedMessageToAnimate && !didScroll) {
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scrollToLoadedMessage(messageId, 'unread-indicator');
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setDidScroll(true);
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} else if (quotedMessageToAnimate) {
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setDidScroll(true);
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}
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});
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return (
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<LastSeenBarContainer id="unread-indicator">
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<LastSeenBar />
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<LastSeenText>{window.i18n('unreadMessages')}</LastSeenText>
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<LastSeenBar />
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</LastSeenBarContainer>
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);
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};
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