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@@ -1,53 +0,0 @@
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-"use strict";
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-
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-(function() {
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-
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- class OfflineClient
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- {
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- constructor()
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- {
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- // Create a BroadcastChannel, if supported.
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- this._broadcastChannel = (typeof BroadcastChannel === "undefined" ? null : new BroadcastChannel("offline"));
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-
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- // Queue of messages received before a message callback is set.
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- this._queuedMessages = [];
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-
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- // The message callback.
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- this._onMessageCallback = null;
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-
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- // If BroadcastChannel is supported, listen for messages.
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- if (this._broadcastChannel)
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- this._broadcastChannel.onmessage = (e => this._OnBroadcastChannelMessage(e));
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- }
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-
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- _OnBroadcastChannelMessage(e)
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- {
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- // Have a message callback set: just forward the call.
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- if (this._onMessageCallback)
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- {
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- this._onMessageCallback(e);
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- return;
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- }
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-
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- // Otherwise the app hasn't loaded far enough to set a message callback.
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- // Buffer the incoming messages to replay when the app sets a callback.
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- this._queuedMessages.push(e);
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- }
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-
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- SetMessageCallback(f)
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- {
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- this._onMessageCallback = f;
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-
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- // Replay any queued messages through the handler, then clear the queue.
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- for (let e of this._queuedMessages)
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- this._onMessageCallback(e);
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-
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- this._queuedMessages.length = 0;
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- }
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- };
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-
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- // Create the offline client ASAP so we receive and start queueing any messages the SW broadcasts.
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- window.OfflineClientInfo = new OfflineClient();
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-
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-}());
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-
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