matrix-js-sdk/src/crypto/verification/request/RequestCallbackChannel.js

/*
Copyright 2019 The Matrix.org Foundation C.I.C.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

/** a key verification channel that wraps over an actual channel to pass it to a verifier,
 * to notify the VerificationRequest when the verifier tries to send anything over the channel.
 * This way, the VerificationRequest can update its state based on events sent by the verifier.
 * Anything that is not sending is just routing through to the wrapped channel.
 */
export default class RequestCallbackChannel {
    constructor(request, channel) {
        this._request = request;
        this._channel = channel;
    }

    get transactionId() {
        return this._channel.transactionId;
    }

    get needsDoneMessage() {
        return this._channel.needsDoneMessage;
    }

    handleEvent(event, request) {
        return this._channel.handleEvent(event, request);
    }

    completedContentFromEvent(event) {
        return this._channel.completedContentFromEvent(event);
    }

    completeContent(type, content) {
        return this._channel.completeContent(type, content);
    }

    async send(type, uncompletedContent) {
        this._request.handleVerifierSend(type, uncompletedContent);
        const result = await this._channel.send(type, uncompletedContent);
        return result;
    }

    async sendCompleted(type, content) {
        this._request.handleVerifierSend(type, content);
        const result = await this._channel.sendCompleted(type, content);
        return result;
    }
}