67 lines
1.8 KiB
JavaScript
67 lines
1.8 KiB
JavaScript
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// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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(function linkClickerContentScript() {
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// time in ms
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let minInterval;
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let maxInterval;
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let pattern;
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let enabled;
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let timeoutId;
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// Initialize variables.
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chrome.runtime.sendMessage({type:'get'}, function(msg) {
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if (msg.type == 'update') updateFromMessage(msg);
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});
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chrome.runtime.onMessage.addListener(
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function(msg, sender, sendResponse) {
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if (msg.type == 'update') updateFromMessage(msg);
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});
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function findAllLinks() {
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let links = document.links;
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let results = new Set();
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for (let i = 0; i < links.length; i++) {
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let href = links[i].href;
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if (!href) continue;
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if (href && href.match(pattern)) results.add(href);
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}
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return Array.from(results);
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}
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function updateFromMessage(msg) {
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console.log(msg);
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minInterval = Number(msg.minInterval)
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maxInterval = Number(msg.maxInterval);
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pattern = new RegExp(msg.pattern);
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enabled = Boolean(msg.enabled);
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if (enabled) schedule();
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}
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function followLink() {
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if (!enabled) return;
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let links = findAllLinks();
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if (links.length <= 5) {
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// navigate back if the page has not enough links
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window.history.back()
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console.log("navigate back");
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} else {
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let link = links[Math.round(Math.random() * (links.length-1))];
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console.log(link);
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window.location.href = link;
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// Schedule in case we just followed an anchor.
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schedule();
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}
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}
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function schedule() {
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clearTimeout(timeoutId);
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let delta = maxInterval - minInterval;
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let duration = minInterval + (Math.random() * delta);
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console.log(duration);
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timeoutId = setTimeout(followLink, duration);
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}
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})();
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