matrix-js-sdk

    Class ReadReceipt<Events, Arguments, SuperclassArguments>Abstract

    Typed Event Emitter class which can act as a Base Model for all our model and communication events. This makes it much easier for us to distinguish between events, as we now need to properly type this, so that our events are not stringly-based and prone to silly typos.

    Type parameters:

    • Events - List of all events emitted by this TypedEventEmitter. Normally an enum type.
    • Arguments - A ListenerMap type providing mappings from event names to listener types.
    • SuperclassArguments - TODO: not really sure. Alternative listener mappings, I think? But only honoured for .emit?

    Type Parameters

    Hierarchy (View Summary, Expand)

    Index

    Constructors

    Accessors

    Methods

    • Add a temporary local-echo receipt to the room to reflect in the client the fact that we've sent one.

      Parameters

      • userId: string

        The user ID if the receipt sender

      • e: MatrixEvent

        The event that is to be acknowledged

      • receiptType: ReceiptType

        The type of receipt

      • unthreaded: boolean = false

        the receipt is unthreaded

      Returns void

    • Look in this room/thread's timeline to find an event. If this is a room, we look in all threads, but if this is a thread, we look only inside this thread.

      Parameters

      • eventId: string

      Returns undefined | MatrixEvent

    • This issue should also be addressed on synapse's side and is tracked as part of https://github.com/matrix-org/synapse/issues/14837

      Retrieves the read receipt for the logged in user and checks if it matches the last event in the room and whether that event originated from the logged in user. Under those conditions we can consider the context as read. This is useful because we never send read receipts against our own events

      Parameters

      • userId: string

        the logged in user

      Returns void

    • Get the ID of the event that a given user has read up to, or null if:

      • we have received no read receipts for them, or
      • the receipt we have points at an event we don't have, or
      • the thread ID in the receipt does not match the thread root of the referenced event.

      (The event might not exist if it is not loaded, and the thread ID might not match if the event has moved thread because it was redacted.)

      Parameters

      • userId: string

        The user ID to get read receipt event ID for

      • ignoreSynthesized: boolean = false

        If true, return only receipts that have been sent by the server, not implicit ones generated by the JS SDK.

      Returns null | string

      ID of the latest existing event that the given user has read, or null.

    • Returns the most recent unthreaded receipt for a given user

      Parameters

      • userId: string

        the MxID of the User

      Returns undefined | Receipt

      an unthreaded Receipt. Can be undefined if receipts have been disabled or a user chooses to use private read receipts (or we have simply not received a receipt from this user yet).

      use hasUserReadEvent or getEventReadUpTo instead

    • Gets the latest receipt for a given user in the room

      Parameters

      • userId: string

        The id of the user for which we want the receipt

      • ignoreSynthesized: boolean = false

        Whether to ignore synthesized receipts or not

      • receiptType: ReceiptType = ReceiptType.Read

        Optional. The type of the receipt we want to get

      Returns null | WrappedReceipt

      the latest receipts of the chosen type for the chosen user

    • Determines if the given user has read a particular event ID with the known history of the room. This is not a definitive check as it relies only on what is available to the room at the time of execution.

      Parameters

      • userId: string

        The user ID to check the read state of.

      • eventId: string

        The event ID to check if the user read.

      Returns boolean

      True if the user has read the event, false otherwise.

    • Adds the listener function to the end of the listeners array for the event named event.

      No checks are made to see if the listener has already been added. Multiple calls passing the same combination of event and listener will result in the listener being added, and called, multiple times.

      By default, event listeners are invoked in the order they are added. The prependListener method can be used as an alternative to add the event listener to the beginning of the listeners array.

      Type Parameters

      • T extends string

      Parameters

      Returns this

      a reference to the EventEmitter, so that calls can be chained.

    • Adds a one-time listener function for the event named event. The next time event is triggered, this listener is removed and then invoked.

      Returns a reference to the EventEmitter, so that calls can be chained.

      By default, event listeners are invoked in the order they are added. The prependOnceListener method can be used as an alternative to add the event listener to the beginning of the listeners array.

      Type Parameters

      • T extends string

      Parameters

      Returns this

      a reference to the EventEmitter, so that calls can be chained.

    • Adds the listener function to the beginning of the listeners array for the event named event.

      No checks are made to see if the listener has already been added. Multiple calls passing the same combination of event and listener will result in the listener being added, and called, multiple times.

      Type Parameters

      • T extends string

      Parameters

      Returns this

      a reference to the EventEmitter, so that calls can be chained.

    • Removes all listeners, or those of the specified event.

      It is bad practice to remove listeners added elsewhere in the code, particularly when the EventEmitter instance was created by some other component or module (e.g. sockets or file streams).

      Parameters

      Returns this

      a reference to the EventEmitter, so that calls can be chained.

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