69 lines
1.9 KiB
JavaScript
69 lines
1.9 KiB
JavaScript
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/* global msg queryTabs ignoreChromeError */
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/* exported contentScripts */
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'use strict';
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const contentScripts = (() => {
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const NTP = 'chrome://newtab/';
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const ALL_URLS = '<all_urls>';
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const SCRIPTS = chrome.runtime.getManifest().content_scripts;
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// expand * as .*?
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const wildcardAsRegExp = (s, flags) => new RegExp(
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s.replace(/[{}()[\]/\\.+?^$:=!|]/g, '\\$&')
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.replace(/\*/g, '.*?'), flags);
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for (const cs of SCRIPTS) {
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cs.matches = cs.matches.map(m => (
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m === ALL_URLS ? m : wildcardAsRegExp(m)
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));
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}
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return {injectToTab, injectToAllTabs};
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function injectToTab({url, tabId, frameId = null}) {
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for (const script of SCRIPTS) {
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if (
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script.matches.some(match =>
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(match === ALL_URLS || url.match(match)) &&
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(!url.startsWith('chrome') || url === NTP))
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) {
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doInject(tabId, frameId, script);
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}
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}
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}
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function doInject(tabId, frameId, script) {
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const options = frameId === null ? {} : {frameId};
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msg.sendTab(tabId, {method: 'ping'}, options)
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.catch(() => false)
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.then(pong => {
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if (pong) {
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return;
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}
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const options = {
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runAt: script.run_at,
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allFrames: script.all_frames,
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matchAboutBlank: script.match_about_blank
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};
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if (frameId !== null) {
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options.allFrames = false;
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options.frameId = frameId;
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}
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for (const file of script.js) {
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chrome.tabs.executeScript(tabId, Object.assign({file}, options), ignoreChromeError);
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}
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});
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}
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function injectToAllTabs() {
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return queryTabs().then(tabs => {
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for (const tab of tabs) {
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// skip lazy-loaded aka unloaded tabs that seem to start loading on message in FF
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if (tab.width) {
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injectToTab({
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url: tab.url,
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tabId: tab.id
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});
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}
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}
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});
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}
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})();
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