67 lines
1.9 KiB
JavaScript
67 lines
1.9 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const EventEmitter = require("devtools/shared/event-emitter");
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/**
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* A dummy front decorated with the provided methods.
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*
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* @param array blueprint
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* A list of [funcName, retVal] describing the class.
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*/
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function MockFront(blueprint) {
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EventEmitter.decorate(this);
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for (let [funcName, retVal] of blueprint) {
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this[funcName] = (x => typeof x === "function" ? x() : x).bind(this, retVal);
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}
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}
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function MockTimelineFront() {
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MockFront.call(this, [
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["destroy"],
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["start", 0],
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["stop", 0],
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]);
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}
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/**
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* Takes a TabTarget, and checks existence of a TimelineActor on
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* the server, or if TEST_MOCK_TIMELINE_ACTOR is to be used.
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*
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* @param {TabTarget} target
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* @return {Boolean}
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*/
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function timelineActorSupported(target) {
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// This `target` property is used only in tests to test
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// instances where the timeline actor is not available.
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if (target.TEST_MOCK_TIMELINE_ACTOR) {
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return false;
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}
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return target.hasActor("timeline");
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}
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/**
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* Returns a function to be used as a method on an "Front" in ./actors.
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* Calls the underlying actor's method.
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*/
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function callFrontMethod(method) {
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return function () {
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// If there's no target or client on this actor facade,
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// abort silently -- this occurs in tests when polling occurs
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// after the test ends, when tests do not wait for toolbox destruction
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// (which will destroy the actor facade, turning off the polling).
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if (!this._target || !this._target.client) {
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return undefined;
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}
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return this._front[method].apply(this._front, arguments);
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};
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}
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exports.MockTimelineFront = MockTimelineFront;
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exports.timelineActorSupported = timelineActorSupported;
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exports.callFrontMethod = callFrontMethod;
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