411 lines
13 KiB
JavaScript
411 lines
13 KiB
JavaScript
/* global CodeMirror semverCompare closeCurrentTab messageBox download
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$ $$ $create $createLink t prefs API */
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'use strict';
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(() => {
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// TODO: remove .replace(/^\?/, '') when minimum_chrome_version >= 52 (https://crbug.com/601425)
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const params = new URLSearchParams(location.search.replace(/^\?/, ''));
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const tabId = params.has('tabId') ? Number(params.get('tabId')) : -1;
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const initialUrl = params.get('updateUrl');
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let installed = null;
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let installedDup = null;
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const liveReload = initLiveReload();
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liveReload.ready.then(initSourceCode, error => messageBox.alert(error, 'pre'));
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const theme = prefs.get('editor.theme');
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const cm = CodeMirror($('.main'), {
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readOnly: true,
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colorpicker: true,
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theme,
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});
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if (theme !== 'default') {
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document.head.appendChild($create('link', {
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rel: 'stylesheet',
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href: `vendor/codemirror/theme/${theme}.css`
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}));
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}
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window.addEventListener('resize', adjustCodeHeight);
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// "History back" in Firefox (for now) restores the old DOM including the messagebox,
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// which stays after installing since we don't want to wait for the fadeout animation before resolving.
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document.addEventListener('visibilitychange', () => {
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if (messageBox.element) messageBox.element.remove();
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if (installed) liveReload.onToggled();
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});
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setTimeout(() => {
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if (!installed) {
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$('#header').appendChild($create('.lds-spinner',
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new Array(12).fill($create('div')).map(e => e.cloneNode())));
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}
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}, 200);
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function updateMeta(style, dup = installedDup) {
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installedDup = dup;
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const data = style.usercssData;
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const dupData = dup && dup.usercssData;
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const versionTest = dup && semverCompare(data.version, dupData.version);
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cm.setPreprocessor(data.preprocessor);
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const installButtonLabel = t(
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installed ? 'installButtonInstalled' :
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!dup ? 'installButton' :
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versionTest > 0 ? 'installButtonUpdate' : 'installButtonReinstall'
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);
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document.title = `${installButtonLabel} ${data.name}`;
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$('.install').textContent = installButtonLabel;
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$('.install').classList.add(
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installed ? 'installed' :
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!dup ? 'install' :
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versionTest > 0 ? 'update' :
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'reinstall');
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$('.set-update-url').title = dup && dup.updateUrl && t('installUpdateFrom', dup.updateUrl) || '';
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$('.meta-name').textContent = data.name;
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$('.meta-version').textContent = data.version;
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$('.meta-description').textContent = data.description;
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if (data.author) {
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$('.meta-author').parentNode.style.display = '';
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$('.meta-author').textContent = '';
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$('.meta-author').appendChild(makeAuthor(data.author));
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} else {
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$('.meta-author').parentNode.style.display = 'none';
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}
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$('.meta-license').parentNode.style.display = data.license ? '' : 'none';
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$('.meta-license').textContent = data.license;
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$('.applies-to').textContent = '';
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getAppliesTo(style).forEach(pattern =>
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$('.applies-to').appendChild($create('li', pattern)));
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$('.external-link').textContent = '';
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const externalLink = makeExternalLink();
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if (externalLink) {
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$('.external-link').appendChild(externalLink);
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}
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$('#header').classList.add('meta-init');
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$('#header').classList.remove('meta-init-error');
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setTimeout(() => $.remove('.lds-spinner'), 1000);
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showError('');
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requestAnimationFrame(adjustCodeHeight);
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function makeAuthor(text) {
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const match = text.match(/^(.+?)(?:\s+<(.+?)>)?(?:\s+\((.+?)\))?$/);
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if (!match) {
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return document.createTextNode(text);
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}
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const [, name, email, url] = match;
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const frag = document.createDocumentFragment();
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if (email) {
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frag.appendChild($createLink(`mailto:${email}`, name));
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} else {
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frag.appendChild($create('span', name));
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}
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if (url) {
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frag.appendChild($createLink(url,
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$create('SVG:svg.svg-icon', {viewBox: '0 0 20 20'},
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$create('SVG:path', {
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d: 'M4,4h5v2H6v8h8v-3h2v5H4V4z M11,3h6v6l-2-2l-4,4L9,9l4-4L11,3z'
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}))
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));
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}
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return frag;
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}
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function makeExternalLink() {
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const urls = [
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data.homepageURL && [data.homepageURL, t('externalHomepage')],
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data.supportURL && [data.supportURL, t('externalSupport')],
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];
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return (data.homepageURL || data.supportURL) && (
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$create('div', [
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$create('h3', t('externalLink')),
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$create('ul', urls.map(args => args &&
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$create('li',
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$createLink(...args)
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)
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))
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]));
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}
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}
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function showError(err) {
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$('.warnings').textContent = '';
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if (err) {
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$('.warnings').appendChild(buildWarning(err));
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}
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$('.warnings').classList.toggle('visible', Boolean(err));
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$('.container').classList.toggle('has-warnings', Boolean(err));
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adjustCodeHeight();
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}
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function install(style) {
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installed = style;
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$$.remove('.warning');
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$('button.install').disabled = true;
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$('button.install').classList.add('installed');
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$('#live-reload-install-hint').classList.toggle('hidden', !liveReload.enabled);
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$('h2.installed').classList.add('active');
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$('.set-update-url input[type=checkbox]').disabled = true;
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$('.set-update-url').title = style.updateUrl ?
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t('installUpdateFrom', style.updateUrl) : '';
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updateMeta(style);
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if (!liveReload.enabled && !prefs.get('openEditInWindow')) {
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location.href = '/edit.html?id=' + style.id;
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} else {
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API.openEditor({id: style.id});
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if (!liveReload.enabled) {
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if (tabId < 0 && history.length > 1) {
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history.back();
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} else {
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closeCurrentTab();
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}
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}
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}
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}
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function initSourceCode(sourceCode) {
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cm.setValue(sourceCode);
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cm.refresh();
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API.buildUsercss({sourceCode, checkDup: true})
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.then(init)
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.catch(err => {
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$('#header').classList.add('meta-init-error');
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console.error(err);
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showError(err);
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});
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}
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function buildWarning(err) {
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const contents = Array.isArray(err) ?
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[$create('pre', err.join('\n'))] :
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[err && err.message && $create('pre', err.message) || err || 'Unknown error'];
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if (Number.isInteger(err.index) && typeof contents[0] === 'string') {
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const pos = cm.posFromIndex(err.index);
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contents[0] = `${pos.line + 1}:${pos.ch + 1} ` + contents[0];
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contents.push($create('pre', drawLinePointer(pos)));
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setTimeout(() => {
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cm.scrollIntoView({line: pos.line + 1, ch: pos.ch}, window.innerHeight / 4);
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cm.setCursor(pos.line, pos.ch + 1);
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cm.focus();
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});
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}
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return $create('.warning', [
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t('parseUsercssError'),
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'\n',
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...contents,
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]);
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}
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function drawLinePointer(pos) {
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const SIZE = 60;
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const line = cm.getLine(pos.line);
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const numTabs = pos.ch + 1 - line.slice(0, pos.ch + 1).replace(/\t/g, '').length;
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const pointer = ' '.repeat(pos.ch) + '^';
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const start = Math.max(Math.min(pos.ch - SIZE / 2, line.length - SIZE), 0);
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const end = Math.min(Math.max(pos.ch + SIZE / 2, SIZE), line.length);
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const leftPad = start !== 0 ? '...' : '';
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const rightPad = end !== line.length ? '...' : '';
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return (
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leftPad +
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line.slice(start, end).replace(/\t/g, ' '.repeat(cm.options.tabSize)) +
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rightPad +
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'\n' +
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' '.repeat(leftPad.length + numTabs * cm.options.tabSize) +
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pointer.slice(start, end)
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);
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}
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function init({style, dup}) {
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const data = style.usercssData;
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const dupData = dup && dup.usercssData;
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const versionTest = dup && semverCompare(data.version, dupData.version);
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updateMeta(style, dup);
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// update UI
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if (versionTest < 0) {
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$('.actions').parentNode.insertBefore(
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$create('.warning', t('versionInvalidOlder')),
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$('.actions')
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);
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}
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$('button.install').onclick = () => {
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(!dup ?
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Promise.resolve(true) :
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messageBox.confirm(t('styleInstallOverwrite', [
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data.name,
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dupData.version,
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data.version,
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]))
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).then(ok => ok &&
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API.installUsercss(style)
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.then(install)
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.catch(err => messageBox.alert(t('styleInstallFailed', err), 'pre'))
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);
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};
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// set updateUrl
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const checker = $('.set-update-url input[type=checkbox]');
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const updateUrl = new URL(style.updateUrl || initialUrl);
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if (dup && dup.updateUrl === updateUrl.href) {
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checker.checked = true;
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// there is no way to "unset" updateUrl, you can only overwrite it.
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checker.disabled = true;
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} else if (updateUrl.protocol !== 'file:') {
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checker.checked = true;
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style.updateUrl = updateUrl.href;
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}
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checker.onchange = () => {
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style.updateUrl = checker.checked ? updateUrl.href : null;
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};
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checker.onchange();
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$('.set-update-url p').textContent = updateUrl.href.length < 300 ? updateUrl.href :
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updateUrl.href.slice(0, 300) + '...';
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if (initialUrl.startsWith('file:')) {
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$('.live-reload input').onchange = liveReload.onToggled;
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} else {
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$('.live-reload').remove();
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}
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}
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function getAppliesTo(style) {
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function *_gen() {
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for (const section of style.sections) {
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for (const type of ['urls', 'urlPrefixes', 'domains', 'regexps']) {
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if (section[type]) {
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yield *section[type];
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}
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}
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}
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}
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const result = [..._gen()];
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if (!result.length) {
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result.push(chrome.i18n.getMessage('appliesToEverything'));
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}
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return result;
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}
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function adjustCodeHeight() {
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// Chrome-only bug (apparently): it doesn't limit the scroller element height
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const scroller = cm.display.scroller;
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const prevWindowHeight = adjustCodeHeight.prevWindowHeight;
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if (scroller.scrollHeight === scroller.clientHeight ||
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prevWindowHeight && window.innerHeight !== prevWindowHeight) {
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adjustCodeHeight.prevWindowHeight = window.innerHeight;
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cm.setSize(null, $('.main').offsetHeight - $('.warnings').offsetHeight);
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}
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}
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function initLiveReload() {
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const DELAY = 500;
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let isEnabled = false;
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let timer = 0;
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/** @type function(?options):Promise<string|null> */
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let getData = null;
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/** @type Promise */
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let sequence = null;
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if (tabId < 0) {
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getData = DirectDownloader();
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sequence = API.getUsercssInstallCode(initialUrl)
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.then(code => code || getData())
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.catch(getData);
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} else {
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getData = PortDownloader();
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sequence = getData({timer: false});
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}
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return {
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get enabled() {
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return isEnabled;
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},
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ready: sequence,
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onToggled(e) {
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if (e) isEnabled = e.target.checked;
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if (installed || installedDup) {
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(isEnabled ? start : stop)();
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$('.install').disabled = isEnabled;
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Object.assign($('#live-reload-install-hint'), {
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hidden: !isEnabled,
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textContent: t(`liveReloadInstallHint${tabId >= 0 ? 'FF' : ''}`),
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});
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}
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},
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};
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function check() {
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getData()
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.then(update, logError)
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.then(() => {
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timer = 0;
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start();
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});
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}
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function logError(error) {
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console.warn(t('liveReloadError', error));
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}
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function start() {
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timer = timer || setTimeout(check, DELAY);
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}
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function stop() {
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clearTimeout(timer);
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timer = 0;
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}
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function update(code) {
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if (code == null) return;
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sequence = sequence.catch(console.error).then(() => {
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const {id} = installed || installedDup;
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const scrollInfo = cm.getScrollInfo();
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const cursor = cm.getCursor();
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cm.setValue(code);
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cm.setCursor(cursor);
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cm.scrollTo(scrollInfo.left, scrollInfo.top);
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return API.installUsercss({id, sourceCode: code})
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.then(updateMeta)
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.catch(showError);
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});
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}
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function DirectDownloader() {
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let oldCode = null;
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const passChangedCode = code => {
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const isSame = code === oldCode;
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oldCode = code;
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return isSame ? null : code;
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};
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return () => download(initialUrl).then(passChangedCode);
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}
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function PortDownloader() {
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const resolvers = new Map();
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const port = chrome.tabs.connect(tabId, {name: 'downloadSelf'});
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port.onMessage.addListener(({id, code, error}) => {
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const r = resolvers.get(id);
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resolvers.delete(id);
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if (error) {
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r.reject(error);
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} else {
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r.resolve(code);
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}
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});
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port.onDisconnect.addListener(() => {
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browser.tabs.get(tabId)
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.then(tab => tab.url === initialUrl && location.reload())
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.catch(closeCurrentTab);
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});
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return ({timer = true} = {}) => new Promise((resolve, reject) => {
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const id = performance.now();
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resolvers.set(id, {resolve, reject});
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port.postMessage({id, timer});
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});
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}
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}
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})();
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