70 lines
2.0 KiB
JavaScript
70 lines
2.0 KiB
JavaScript
'use strict';
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(() => {
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const manifest = chrome.runtime.getManifest();
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const allowedOrigins = [
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'https://openusercss.org',
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'https://openusercss.com'
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];
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// Tell the page that we exist and that it should send the handshake
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allowedOrigins.forEach(origin => {
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window.postMessage({
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'type': 'ouc-begin-handshake'
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}, origin);
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});
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// Wait for the handshake
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window.addEventListener('message', event => {
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if (
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event.data
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&& event.data.type === 'ouc-handshake-question'
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&& allowedOrigins.includes(event.origin)
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) {
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// This is a representation of features that Stylus is capable of
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const implementedFeatures = [
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'install-usercss',
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'configure-after-install',
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'builtin-editor',
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'create-usercss',
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'edit-usercss',
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'import-moz-export',
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'export-moz-export',
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'update-manual',
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'update-auto',
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'export-json-backups',
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'import-json-backups',
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'manage-local'
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];
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const reportedFeatures = [];
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// The handshake question includes a list of required and optional features
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// we match them with features we have implemented, and build a union array.
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event.data.featuresList.required.forEach(feature => {
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if (implementedFeatures.includes(feature)) {
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reportedFeatures.push(feature);
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}
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});
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event.data.featuresList.optional.forEach(feature => {
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if (implementedFeatures.includes(feature)) {
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reportedFeatures.push(feature);
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}
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});
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// We send the handshake response, which includes the key we got, plus some
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// additional metadata
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allowedOrigins.forEach(origin => {
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window.postMessage({
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'type': 'ouc-handshake-response',
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'key': event.data.key,
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'extension': {
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'name': manifest.name,
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'capabilities': reportedFeatures
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}
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}, origin);
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});
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}
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});
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})();
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