@slide-computer/signer-web/lib/esm/icrc29/postMessageChannel.js

JavaScript and TypeScript library to communicate with web signers on the Internet Computer

var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "m") throw new TypeError("Private method is not writable");
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _PostMessageChannel_closeListeners, _PostMessageChannel_options, _PostMessageChannel_closed, _PostMessageChannel_pendingQueue;
import { isJsonRpcResponse, } from "@slide-computer/signer";
import { PostMessageTransportError } from "./postMessageTransport.js";
export class PostMessageChannel {
    constructor(options) {
        _PostMessageChannel_closeListeners.set(this, new Set());
        _PostMessageChannel_options.set(this, void 0);
        _PostMessageChannel_closed.set(this, false);
        _PostMessageChannel_pendingQueue.set(this, []);
        __classPrivateFieldSet(this, _PostMessageChannel_options, Object.assign({ signerStatus: "ready", window: globalThis.window, manageFocus: true }, options), "f");
    }
    get closed() {
        return __classPrivateFieldGet(this, _PostMessageChannel_closed, "f");
    }
    addEventListener(...[event, listener]) {
        switch (event) {
            case "close":
                __classPrivateFieldGet(this, _PostMessageChannel_closeListeners, "f").add(listener);
                return () => {
                    __classPrivateFieldGet(this, _PostMessageChannel_closeListeners, "f").delete(listener);
                };
            case "response":
                const messageListener = async (event) => {
                    if (event.source !== __classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerWindow ||
                        event.origin !== __classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerOrigin ||
                        !isJsonRpcResponse(event.data)) {
                        return;
                    }
                    listener(event.data);
                };
                __classPrivateFieldGet(this, _PostMessageChannel_options, "f").window.addEventListener("message", messageListener);
                return () => {
                    __classPrivateFieldGet(this, _PostMessageChannel_options, "f").window.removeEventListener("message", messageListener);
                };
        }
    }
    async send(request) {
        if (__classPrivateFieldGet(this, _PostMessageChannel_closed, "f")) {
            throw new PostMessageTransportError("Communication channel is closed");
        }
        if (__classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerStatus === "pending") {
            __classPrivateFieldGet(this, _PostMessageChannel_pendingQueue, "f").push(request);
            return;
        }
        __classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerWindow.postMessage(request, __classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerOrigin);
        if (__classPrivateFieldGet(this, _PostMessageChannel_options, "f").manageFocus) {
            __classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerWindow.focus();
        }
    }
    async close() {
        if (__classPrivateFieldGet(this, _PostMessageChannel_closed, "f")) {
            return;
        }
        __classPrivateFieldSet(this, _PostMessageChannel_closed, true, "f");
        __classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerWindow.close();
        if (__classPrivateFieldGet(this, _PostMessageChannel_options, "f").manageFocus) {
            __classPrivateFieldGet(this, _PostMessageChannel_options, "f").window.focus();
        }
        __classPrivateFieldGet(this, _PostMessageChannel_closeListeners, "f").forEach((listener) => listener());
    }
    changeStatus(status) {
        __classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerStatus = status;
        if (status === "ready") {
            const requests = __classPrivateFieldGet(this, _PostMessageChannel_pendingQueue, "f");
            __classPrivateFieldSet(this, _PostMessageChannel_pendingQueue, [], "f");
            requests.forEach((request, index) => {
                __classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerWindow.postMessage(request, __classPrivateFieldGet(this, _PostMessageChannel_options, "f").signerOrigin);
            });
        }
    }
}
_PostMessageChannel_closeListeners = new WeakMap(), _PostMessageChannel_options = new WeakMap(), _PostMessageChannel_closed = new WeakMap(), _PostMessageChannel_pendingQueue = new WeakMap();
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