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			600 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			TypeScript
		
	
			
		
		
	
	
			600 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			TypeScript
		
	
import React from 'react';
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import { Message } from '../../conversation/Message';
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import { TimerNotification } from '../../conversation/TimerNotification';
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import { SessionScrollButton } from '../SessionScrollButton';
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import { Constants } from '../../../session';
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import _ from 'lodash';
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import { contextMenu } from 'react-contexify';
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import { AttachmentType } from '../../../types/Attachment';
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import { GroupNotification } from '../../conversation/GroupNotification';
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import { GroupInvitation } from '../../conversation/GroupInvitation';
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import { ConversationType } from '../../../state/ducks/conversations';
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import {
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  MessageModel,
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  MessageRegularProps,
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} from '../../../../js/models/messages';
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import { SessionLastSeenIndicator } from './SessionLastSeedIndicator';
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import { ToastUtils } from '../../../session/utils';
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import { TypingBubble } from '../../conversation/TypingBubble';
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import { ConversationController } from '../../../session/conversations';
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import { PubKey } from '../../../session/types';
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interface State {
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  showScrollButton: boolean;
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  animateQuotedMessageId?: string;
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}
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interface Props {
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  selectedMessages: Array<string>;
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  conversationKey: string;
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  messages: Array<MessageModel>;
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  conversation: ConversationType;
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  ourPrimary: string;
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  messageContainerRef: React.RefObject<any>;
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  selectMessage: (messageId: string) => void;
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  deleteMessage: (messageId: string) => void;
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  fetchMessagesForConversation: ({
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    conversationKey,
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    count,
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  }: {
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    conversationKey: string;
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    count: number;
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  }) => void;
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  replyToMessage: (messageId: number) => Promise<void>;
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  showMessageDetails: (messageProps: any) => Promise<void>;
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  onClickAttachment: (attachment: any, message: any) => void;
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  onDownloadAttachment: ({ attachment }: { attachment: any }) => void;
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  onDeleteSelectedMessages: () => Promise<void>;
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}
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export class SessionMessagesList extends React.Component<Props, State> {
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  private readonly messageContainerRef: React.RefObject<any>;
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  private scrollOffsetBottomPx: number = Number.MAX_VALUE;
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  private ignoreScrollEvents: boolean;
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  private timeoutResetQuotedScroll: NodeJS.Timeout | null = null;
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  public constructor(props: Props) {
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    super(props);
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    this.state = {
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      showScrollButton: false,
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    };
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    this.renderMessage = this.renderMessage.bind(this);
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    this.handleScroll = this.handleScroll.bind(this);
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    this.scrollToUnread = this.scrollToUnread.bind(this);
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    this.scrollToBottom = this.scrollToBottom.bind(this);
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    this.scrollToQuoteMessage = this.scrollToQuoteMessage.bind(this);
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    this.getScrollOffsetBottomPx = this.getScrollOffsetBottomPx.bind(this);
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    this.displayUnreadBannerIndex = this.displayUnreadBannerIndex.bind(this);
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    this.onSendAnyway = this.onSendAnyway.bind(this);
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    this.messageContainerRef = this.props.messageContainerRef;
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    this.ignoreScrollEvents = true;
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  }
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  // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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  // ~~~~~~~~~~~~~~~~ LIFECYCLES ~~~~~~~~~~~~~~~~
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  // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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  public componentDidMount() {
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    // Pause thread to wait for rendering to complete
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    setTimeout(this.scrollToUnread, 0);
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  }
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  public componentWillUnmount() {
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    if (this.timeoutResetQuotedScroll) {
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      clearTimeout(this.timeoutResetQuotedScroll);
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    }
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  }
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  public componentDidUpdate(prevProps: Props, _prevState: State) {
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    const isSameConvo =
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      prevProps.conversationKey === this.props.conversationKey;
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    const messageLengthChanged =
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      prevProps.messages.length !== this.props.messages.length;
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    if (
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      !isSameConvo ||
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      (prevProps.messages.length === 0 && this.props.messages.length !== 0)
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    ) {
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      // displayed conversation changed. We have a bit of cleaning to do here
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      this.scrollOffsetBottomPx = Number.MAX_VALUE;
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      this.ignoreScrollEvents = true;
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      this.setupTimeoutResetQuotedHighlightedMessage(true);
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      this.setState(
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        {
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          showScrollButton: false,
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          animateQuotedMessageId: undefined,
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        },
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        this.scrollToUnread
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      );
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    } else {
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      // if we got new message for this convo, and we are scrolled to bottom
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      if (isSameConvo && messageLengthChanged) {
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        // Keep scrolled to bottom unless user scrolls up
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        if (this.getScrollOffsetBottomPx() === 0) {
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          this.scrollToBottom();
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        } else {
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          const messageContainer = this.messageContainerRef?.current;
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          if (messageContainer) {
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            const scrollHeight = messageContainer.scrollHeight;
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            const clientHeight = messageContainer.clientHeight;
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            this.ignoreScrollEvents = true;
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            messageContainer.scrollTop =
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              scrollHeight - clientHeight - this.scrollOffsetBottomPx;
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            this.ignoreScrollEvents = false;
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          }
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        }
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      }
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    }
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  }
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  public render() {
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    const { conversationKey, conversation, messages } = this.props;
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    const { showScrollButton } = this.state;
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    let displayedName = null;
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    if (conversation.type === 'direct') {
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      displayedName = ConversationController.getInstance().getContactProfileNameOrShortenedPubKey(
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        conversationKey
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      );
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    }
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    return (
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      <div
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        className="messages-container"
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        onScroll={this.handleScroll}
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        ref={this.messageContainerRef}
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      >
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        <TypingBubble
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          phoneNumber={conversationKey}
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          conversationType={conversation.type}
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          displayedName={displayedName}
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          isTyping={conversation.isTyping}
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        />
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        {this.renderMessages(messages)}
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        <SessionScrollButton
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          show={showScrollButton}
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          onClick={this.scrollToBottom}
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        />
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      </div>
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    );
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  }
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  private displayUnreadBannerIndex(messages: Array<MessageModel>) {
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    const { conversation } = this.props;
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    if (conversation.unreadCount === 0) {
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      return -1;
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    }
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    // conversation.unreadCount is the number of messages we incoming we did not read yet.
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    // also, unreacCount is updated only when the conversation is marked as read.
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    // So we can have an unreadCount for the conversation not correct based on the real number of unread messages.
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    // some of the messages we have in "messages" are ones we sent ourself (or from another device).
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    // those messages should not be counted to display the unread banner.
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    let findFirstUnreadIndex = -1;
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    let incomingMessagesSoFar = 0;
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    const { unreadCount } = conversation;
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    // Basically, count the number of incoming messages from the most recent one.
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    for (let index = 0; index <= messages.length - 1; index++) {
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      const message = messages[index];
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      if (message.attributes.type === 'incoming') {
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        incomingMessagesSoFar++;
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        // message.attributes.unread is !== undefined if the message is unread.
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        if (
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          message.attributes.unread !== undefined &&
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          incomingMessagesSoFar >= unreadCount
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        ) {
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          findFirstUnreadIndex = index;
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          break;
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        }
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      }
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    }
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    //
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    if (findFirstUnreadIndex === -1 && conversation.unreadCount >= 0) {
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      return conversation.unreadCount - 1;
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    }
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    return findFirstUnreadIndex;
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  }
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  private renderMessages(messages: Array<MessageModel>) {
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    const { conversation, ourPrimary, selectedMessages } = this.props;
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    const multiSelectMode = Boolean(selectedMessages.length);
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    let currentMessageIndex = 0;
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    const displayUnreadBannerIndex = this.displayUnreadBannerIndex(messages);
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    return (
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      <>
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        {messages.map((message: MessageModel) => {
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          const messageProps = message.propsForMessage;
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          const timerProps = message.propsForTimerNotification;
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          const propsForGroupInvitation = message.propsForGroupInvitation;
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          const groupNotificationProps = message.propsForGroupNotification;
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          // IF there are some unread messages
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          // AND we found the last read message
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          // AND we are not scrolled all the way to the bottom
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          // THEN, show the unread banner for the current message
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          const showUnreadIndicator =
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            displayUnreadBannerIndex >= 0 &&
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            currentMessageIndex === displayUnreadBannerIndex &&
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            this.getScrollOffsetBottomPx() !== 0;
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          const unreadIndicator = (
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            <SessionLastSeenIndicator
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              count={displayUnreadBannerIndex + 1} // count is used for the 118n of the string
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              show={showUnreadIndicator}
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              key={`unread-indicator-${message.id}`}
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            />
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          );
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          currentMessageIndex = currentMessageIndex + 1;
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          if (groupNotificationProps) {
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            return (
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              <>
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                <GroupNotification
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                  {...groupNotificationProps}
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                  key={message.id}
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                />
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                {unreadIndicator}
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              </>
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            );
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          }
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          if (propsForGroupInvitation) {
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            return (
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              <>
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                <GroupInvitation
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                  {...propsForGroupInvitation}
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                  key={message.id}
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                />
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                {unreadIndicator}
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              </>
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            );
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          }
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          if (timerProps) {
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            return (
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              <>
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                <TimerNotification {...timerProps} key={message.id} />
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                {unreadIndicator}
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              </>
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            );
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          }
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          if (!messageProps) {
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            return;
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          }
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          if (messageProps.conversationType === 'group') {
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            messageProps.weAreAdmin = conversation.groupAdmins?.includes(
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              ourPrimary
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            );
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          }
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          // a message is deletable if
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          // either we sent it,
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          // or the convo is not a public one (in this case, we will only be able to delete for us)
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          // or the convo is public and we are an admin
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          const isDeletable =
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            messageProps.authorPhoneNumber === this.props.ourPrimary ||
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            !conversation.isPublic ||
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            (conversation.isPublic && !!messageProps.weAreAdmin);
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          messageProps.isDeletable = isDeletable;
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          // firstMessageOfSeries tells us to render the avatar only for the first message
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          // in a series of messages from the same user
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          return (
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            <>
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              {this.renderMessage(
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                messageProps,
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                message.firstMessageOfSeries,
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                multiSelectMode,
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                message
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              )}
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              {unreadIndicator}
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            </>
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          );
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        })}
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      </>
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    );
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  }
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  private renderMessage(
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    messageProps: MessageRegularProps,
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    firstMessageOfSeries: boolean,
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    multiSelectMode: boolean,
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    message: MessageModel
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  ) {
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    const selected =
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      !!messageProps?.id &&
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      this.props.selectedMessages.includes(messageProps.id);
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    messageProps.selected = selected;
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    messageProps.firstMessageOfSeries = firstMessageOfSeries;
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    messageProps.multiSelectMode = multiSelectMode;
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    messageProps.onSelectMessage = this.props.selectMessage;
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    messageProps.onDeleteMessage = this.props.deleteMessage;
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    messageProps.onReply = this.props.replyToMessage;
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    messageProps.onShowDetail = async () => {
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      const messageDetailsProps = await message.getPropsForMessageDetail();
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      void this.props.showMessageDetails(messageDetailsProps);
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    };
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    messageProps.onClickAttachment = (attachment: AttachmentType) => {
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      this.props.onClickAttachment(attachment, messageProps);
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    };
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    messageProps.onDownload = (attachment: AttachmentType) => {
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      this.props.onDownloadAttachment({ attachment });
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    };
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    messageProps.isQuotedMessageToAnimate =
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      messageProps.id === this.state.animateQuotedMessageId;
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    if (messageProps.quote) {
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      messageProps.quote.onClick = (options: {
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        quoteAuthor: string;
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        quoteId: any;
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        referencedMessageNotFound: boolean;
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      }) => {
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        void this.scrollToQuoteMessage(options);
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      };
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    }
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    return <Message {...messageProps} key={messageProps.id} />;
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  }
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  // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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  // ~~~~~~~~~~~~~ MESSAGE HANDLING ~~~~~~~~~~~~~
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  // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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  private updateReadMessages() {
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    const { messages, conversationKey } = this.props;
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    if (!messages || messages.length === 0) {
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      return;
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    }
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    const conversation = ConversationController.getInstance().getOrThrow(
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      conversationKey
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    );
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    if (conversation.isBlocked()) {
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      return;
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    }
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    if (this.ignoreScrollEvents) {
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      return;
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    }
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    if (this.getScrollOffsetBottomPx() === 0) {
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      void conversation.markRead(messages[0].attributes.received_at);
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    }
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  }
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  // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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  // ~~~~~~~~~~~~ SCROLLING METHODS ~~~~~~~~~~~~~
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  // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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  private async handleScroll() {
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    const messageContainer = this.messageContainerRef?.current;
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    const { fetchMessagesForConversation, conversationKey } = this.props;
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    if (!messageContainer) {
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      return;
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    }
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    contextMenu.hideAll();
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    if (this.ignoreScrollEvents) {
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      return;
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    }
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    const scrollTop = messageContainer.scrollTop;
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    const clientHeight = messageContainer.clientHeight;
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    const scrollButtonViewShowLimit = 0.75;
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    const scrollButtonViewHideLimit = 0.4;
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    this.scrollOffsetBottomPx = this.getScrollOffsetBottomPx();
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    const scrollOffsetPc = this.scrollOffsetBottomPx / clientHeight;
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						|
    // Scroll button appears if you're more than 75% scrolled up
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    if (
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      scrollOffsetPc > scrollButtonViewShowLimit &&
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      !this.state.showScrollButton
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    ) {
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      this.setState({ showScrollButton: true });
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    }
 | 
						|
    // Scroll button disappears if you're more less than 40% scrolled up
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						|
    if (
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      scrollOffsetPc < scrollButtonViewHideLimit &&
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      this.state.showScrollButton
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    ) {
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      this.setState({ showScrollButton: false });
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    }
 | 
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    // Scrolled to bottom
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    const isScrolledToBottom = this.getScrollOffsetBottomPx() === 0;
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    if (isScrolledToBottom) {
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      // Mark messages read
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      this.updateReadMessages();
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    }
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						|
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    // Fetch more messages when nearing the top of the message list
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						|
    const shouldFetchMoreMessages =
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      scrollTop <= Constants.UI.MESSAGE_CONTAINER_BUFFER_OFFSET_PX;
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    if (shouldFetchMoreMessages) {
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      const { messages } = this.props;
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      const numMessages =
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        this.props.messages.length +
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        Constants.CONVERSATION.DEFAULT_MESSAGE_FETCH_COUNT;
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      const oldLen = messages.length;
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      const previousTopMessage = messages[oldLen - 1]?.id;
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      fetchMessagesForConversation({ conversationKey, count: numMessages });
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      if (previousTopMessage && oldLen !== messages.length) {
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        this.scrollToMessage(previousTopMessage);
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      }
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    }
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  }
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  private scrollToUnread() {
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    const { messages, conversation } = this.props;
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    if (conversation.unreadCount > 0) {
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      let message;
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      if (messages.length > conversation.unreadCount) {
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        // if we have enough message to show one more message, show one more to include the unread banner
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        message = messages[conversation.unreadCount - 1];
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      } else {
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        message = messages[conversation.unreadCount - 1];
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      }
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      if (message) {
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        this.scrollToMessage(message.id);
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      }
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    }
 | 
						|
 | 
						|
    if (this.ignoreScrollEvents && messages.length > 0) {
 | 
						|
      this.ignoreScrollEvents = false;
 | 
						|
      this.updateReadMessages();
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  /**
 | 
						|
   * Could not find a better name, but when we click on a quoted message,
 | 
						|
   * the UI takes us there and highlights it.
 | 
						|
   * If the user clicks again on this message, we want this highlight to be
 | 
						|
   * shown once again.
 | 
						|
   *
 | 
						|
   * So we need to reset the state of of the highlighted message so when the users clicks again,
 | 
						|
   * the highlight is shown once again
 | 
						|
   */
 | 
						|
  private setupTimeoutResetQuotedHighlightedMessage(clearOnly = false) {
 | 
						|
    if (this.timeoutResetQuotedScroll) {
 | 
						|
      clearTimeout(this.timeoutResetQuotedScroll);
 | 
						|
    }
 | 
						|
    // only clear the timeout, do not schedule once again
 | 
						|
    if (clearOnly) {
 | 
						|
      return;
 | 
						|
    }
 | 
						|
    if (this.state.animateQuotedMessageId !== undefined) {
 | 
						|
      this.timeoutResetQuotedScroll = global.setTimeout(() => {
 | 
						|
        this.setState({ animateQuotedMessageId: undefined });
 | 
						|
      }, 3000);
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  private scrollToMessage(messageId: string, smooth: boolean = false) {
 | 
						|
    const topUnreadMessage = document.getElementById(messageId);
 | 
						|
    topUnreadMessage?.scrollIntoView({
 | 
						|
      behavior: smooth ? 'smooth' : 'auto',
 | 
						|
      block: 'center',
 | 
						|
    });
 | 
						|
 | 
						|
    // we consider that a `smooth` set to true, means it's a quoted message, so highlight this message on the UI
 | 
						|
    if (smooth) {
 | 
						|
      this.setState(
 | 
						|
        { animateQuotedMessageId: messageId },
 | 
						|
        this.setupTimeoutResetQuotedHighlightedMessage
 | 
						|
      );
 | 
						|
    }
 | 
						|
 | 
						|
    const messageContainer = this.messageContainerRef.current;
 | 
						|
    if (!messageContainer) {
 | 
						|
      return;
 | 
						|
    }
 | 
						|
 | 
						|
    const scrollHeight = messageContainer.scrollHeight;
 | 
						|
    const clientHeight = messageContainer.clientHeight;
 | 
						|
 | 
						|
    if (scrollHeight !== 0 && scrollHeight === clientHeight) {
 | 
						|
      this.updateReadMessages();
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  private scrollToBottom() {
 | 
						|
    const messageContainer = this.messageContainerRef.current;
 | 
						|
    if (!messageContainer) {
 | 
						|
      return;
 | 
						|
    }
 | 
						|
    messageContainer.scrollTop =
 | 
						|
      messageContainer.scrollHeight - messageContainer.clientHeight;
 | 
						|
    this.updateReadMessages();
 | 
						|
  }
 | 
						|
 | 
						|
  private async scrollToQuoteMessage(options: any = {}) {
 | 
						|
    const { quoteAuthor, quoteId, referencedMessageNotFound } = options;
 | 
						|
 | 
						|
    // For simplicity's sake, we show the 'not found' toast no matter what if we were
 | 
						|
    //   not able to find the referenced message when the quote was received.
 | 
						|
    if (referencedMessageNotFound) {
 | 
						|
      ToastUtils.pushOriginalNotFound();
 | 
						|
      return;
 | 
						|
    }
 | 
						|
    // Look for message in memory first, which would tell us if we could scroll to it
 | 
						|
    const targetMessage = this.props.messages.find(item => {
 | 
						|
      const messageAuthor = item.propsForMessage?.authorPhoneNumber;
 | 
						|
 | 
						|
      if (!messageAuthor || quoteAuthor !== messageAuthor) {
 | 
						|
        return false;
 | 
						|
      }
 | 
						|
      if (quoteId !== item.propsForMessage?.timestamp) {
 | 
						|
        return false;
 | 
						|
      }
 | 
						|
 | 
						|
      return true;
 | 
						|
    });
 | 
						|
 | 
						|
    // If there's no message already in memory, we won't be scrolling. So we'll gather
 | 
						|
    //   some more information then show an informative toast to the user.
 | 
						|
    if (!targetMessage) {
 | 
						|
      const collection = await window.Signal.Data.getMessagesBySentAt(quoteId, {
 | 
						|
        MessageCollection: window.Whisper.MessageCollection,
 | 
						|
      });
 | 
						|
      const found = Boolean(
 | 
						|
        collection.find((item: MessageModel) => {
 | 
						|
          const messageAuthor = item.propsForMessage?.authorPhoneNumber;
 | 
						|
 | 
						|
          return messageAuthor && quoteAuthor === messageAuthor;
 | 
						|
        })
 | 
						|
      );
 | 
						|
 | 
						|
      if (found) {
 | 
						|
        ToastUtils.pushFoundButNotLoaded();
 | 
						|
      } else {
 | 
						|
        ToastUtils.pushOriginalNoLongerAvailable();
 | 
						|
      }
 | 
						|
      return;
 | 
						|
    }
 | 
						|
 | 
						|
    const databaseId = targetMessage.id;
 | 
						|
    this.scrollToMessage(databaseId, true);
 | 
						|
  }
 | 
						|
 | 
						|
  // basically the offset in px from the bottom of the view (most recent message)
 | 
						|
  private getScrollOffsetBottomPx() {
 | 
						|
    const messageContainer = this.messageContainerRef?.current;
 | 
						|
 | 
						|
    if (!messageContainer) {
 | 
						|
      return Number.MAX_VALUE;
 | 
						|
    }
 | 
						|
 | 
						|
    const scrollTop = messageContainer.scrollTop;
 | 
						|
    const scrollHeight = messageContainer.scrollHeight;
 | 
						|
    const clientHeight = messageContainer.clientHeight;
 | 
						|
    return scrollHeight - scrollTop - clientHeight;
 | 
						|
  }
 | 
						|
 | 
						|
  private async onSendAnyway({ contact, message }: any) {
 | 
						|
    message.resend(contact.id);
 | 
						|
  }
 | 
						|
}
 |