Theia API Documentation v1.65.0
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    A message which can be delivered to a message handler.

    This class may be subclassed to create complex message types.

    Hierarchy (View Summary)

    Index

    Constructors

    Properties

    Accessors

    Methods

    Constructors

    • Construct a new message.

      Parameters

      • type: string

        The type of the message.

      Returns Message

    Properties

    type: string

    The type of the message.

    The type of a message should be related directly to its actual runtime type. This means that type can and will be used to cast the message to the relevant derived Message subtype.

    Accessors

    • get isConflatable(): boolean

      Test whether the message is conflatable.

      Message conflation is an advanced topic. Most message types will not make use of this feature.

      If a conflatable message is posted to a handler while another conflatable message of the same type has already been posted to the handler, the conflate() method of the existing message will be invoked. If that method returns true, the new message will not be enqueued. This allows messages to be compressed, so that only a single instance of the message type is processed per cycle, no matter how many times messages of that type are posted.

      Custom message types may reimplement this property.

      The default implementation is always false.

      Returns boolean

    Methods

    • Conflate this message with another message of the same type.

      Parameters

      • other: Message

        A conflatable message of the same type.

      Returns boolean

      true if the message was successfully conflated, or false otherwise.

      Message conflation is an advanced topic. Most message types will not make use of this feature.

      This method is called automatically by the message loop when the given message is posted to the handler paired with this message. This message will already be enqueued and conflatable, and the given message will have the same type and also be conflatable.

      This method should merge the state of the other message into this message as needed so that when this message is finally delivered to the handler, it receives the most up-to-date information.

      If this method returns true, it signals that the other message was successfully conflated and that message will not be enqueued.

      If this method returns false, the other message will be enqueued for normal delivery.

      Custom message types may reimplement this method.

      The default implementation always returns false.