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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const {
FrontClassWithSpec,
registerFront,
} = require("resource://devtools/shared/protocol.js");
const {
eventSourceSpec,
} = require("resource://devtools/shared/specs/eventsource.js");
/**
* A EventSourceFront is used as a front end for the EventSourceActor that is
* created on the server, hiding implementation details.
*/
class EventSourceFront extends FrontClassWithSpec(eventSourceSpec) {
constructor(client, targetFront, parentFront) {
super(client, targetFront, parentFront);
this._onEventSourceConnectionClosed = this._onEventSourceConnectionClosed.bind(
this
);
this._onEventReceived = this._onEventReceived.bind(this);
// Attribute name from which to retrieve the actorID
// out of the target actor's form
this.formAttributeName = "eventSourceActor";
this.on(
"serverEventSourceConnectionClosed",
this._onEventSourceConnectionClosed
);
this.on("serverEventReceived", this._onEventReceived);
}
/**
* Close the EventSourceFront.
*/
destroy() {
this.off("serverEventSourceConnectionClosed");
this.off("serverEventReceived");
return super.destroy();
}
/**
* The "eventSourceConnectionClosed" message type handler. We redirect any message to
* the UI for displaying.
*
* @private
* @param number httpChannelId
*/
async _onEventSourceConnectionClosed(httpChannelId) {
this.emit("eventSourceConnectionClosed", httpChannelId);
}
/**
* The "eventReceived" message type handler. We redirect any message to
* the UI for displaying.
*
* @private
* @param string httpChannelId
* Channel ID of the eventSource connection.
* @param object data
* The data received from the server.
*/
async _onEventReceived(httpChannelId, data) {
this.emit("eventReceived", httpChannelId, data);
}
}
exports.EventSourceFront = EventSourceFront;
registerFront(EventSourceFront);
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