stylus/popup.js
tophf 26802e36df Optimize startup: coalesce & debounce prefs.set
Previously prefs.set broadcast many messages per each changed pref value to all open tabs, background page, popups. This lead to repeated and needless updates of various things like the toolbar icon, reapplying of styles, and whatnot. It could easily take more than 100ms on an average computer with many tabs open.

Now we debounce the broadcast & sync.set and coalesce all values in one object which is then sent just once per destination.
2017-04-18 12:46:28 +03:00

372 lines
11 KiB
JavaScript

/* global SLOPPY_REGEXP_PREFIX, compileStyleRegExps */
'use strict';
let installed;
let tabURL;
getActiveTabRealURL().then(url => {
tabURL = RX_SUPPORTED_URLS.test(url) ? url : '';
Promise.all([
tabURL && getStylesSafe({matchUrl: tabURL}),
onDOMready().then(() => {
initPopup(tabURL);
}),
]).then(([styles]) => {
showStyles(styles);
});
});
chrome.runtime.onMessage.addListener(msg => {
switch (msg.method) {
case 'styleAdded':
case 'styleUpdated':
handleUpdate(msg.style);
break;
case 'styleDeleted':
handleDelete(msg.id);
break;
case 'prefChanged':
if ('popup.stylesFirst' in msg.prefs) {
const stylesFirst = msg.prefs['popup.stylesFirst'];
const actions = $('body > .actions');
const before = stylesFirst ? actions : actions.nextSibling;
document.body.insertBefore(installed, before);
}
break;
}
});
function initPopup(url) {
installed = $('#installed');
// popup width
document.body.style.width =
Math.max(200, Math.min(800, Number(localStorage.popupWidth) || 246)) + 'px';
// force Chrome to resize the popup
document.body.style.height = '10px';
document.documentElement.style.height = '10px';
// action buttons
$('#disableAll').onchange = () =>
installed.classList.toggle('disabled', prefs.get('disableAll'));
setupLivePrefs(['disableAll']);
$('#find-styles-link').onclick = openURLandHide;
$('#popup-manage-button').href = 'manage.html';
$('#popup-manage-button').onclick = openURLandHide;
$('#popup-options-button').onclick = () => chrome.runtime.openOptionsPage();
$('#popup-shortcuts-button').onclick = configureCommands.open;
if (!prefs.get('popup.stylesFirst')) {
document.body.insertBefore(
$('body > .actions'),
installed);
}
// find styles link
$('#find-styles a').href =
'https://userstyles.org/styles/browse/all/' +
encodeURIComponent(url.startsWith('file:') ? 'file:' : url);
if (!url) {
document.body.classList.add('blocked');
return;
}
// Write new style links
const writeStyle = $('#write-style');
const matchTargets = document.createElement('span');
matchTargets.id = 'match';
// For this URL
const urlLink = template.writeStyle.cloneNode(true);
Object.assign(urlLink, {
href: 'edit.html?url-prefix=' + encodeURIComponent(url),
title: `url-prefix("${url}")`,
textContent: prefs.get('popup.breadcrumbs.usePath')
? new URL(url).pathname.slice(1)
: t('writeStyleForURL').replace(/ /g, '\u00a0'), // this URL
onclick: openLinkInTabOrWindow,
});
if (prefs.get('popup.breadcrumbs')) {
urlLink.onmouseenter =
urlLink.onfocus = () => urlLink.parentNode.classList.add('url()');
urlLink.onmouseleave =
urlLink.onblur = () => urlLink.parentNode.classList.remove('url()');
}
matchTargets.appendChild(urlLink);
// For domain
const domains = getDomains(url);
for (const domain of domains) {
// Don't include TLD
if (domains.length > 1 && !domain.includes('.')) {
continue;
}
const domainLink = template.writeStyle.cloneNode(true);
Object.assign(domainLink, {
href: 'edit.html?domain=' + encodeURIComponent(domain),
textContent: domain,
title: `domain("${domain}")`,
onclick: openLinkInTabOrWindow,
});
domainLink.setAttribute('subdomain', domain.substring(0, domain.indexOf('.')));
matchTargets.appendChild(domainLink);
}
if (prefs.get('popup.breadcrumbs')) {
matchTargets.classList.add('breadcrumbs');
matchTargets.appendChild(matchTargets.removeChild(matchTargets.firstElementChild));
}
writeStyle.appendChild(matchTargets);
}
function showStyles(styles) {
if (!styles) {
return;
}
if (!styles.length) {
installed.innerHTML = template.noStyles.outerHTML;
return;
}
const enabledFirst = prefs.get('popup.enabledFirst');
styles.sort((a, b) => (
enabledFirst && a.enabled !== b.enabled
? !(a.enabled < b.enabled) ? -1 : 1
: a.name.localeCompare(b.name)
));
let postponeDetect = false;
const t0 = performance.now();
const container = document.createDocumentFragment();
for (const style of styles) {
createStyleElement({style, container, postponeDetect});
postponeDetect = postponeDetect || performance.now() - t0 > 100;
}
installed.appendChild(container);
getStylesSafe({matchUrl: tabURL, strictRegexp: false})
.then(unscreenedStyles => {
for (const unscreened of unscreenedStyles) {
if (!styles.includes(unscreened)) {
postponeDetect = postponeDetect || performance.now() - t0 > 100;
createStyleElement({
style: Object.assign({appliedSections: [], postponeDetect}, unscreened),
});
}
}
});
}
// silence the inapplicable warning for async code
/* eslint no-use-before-define: [2, {"functions": false, "classes": false}] */
function createStyleElement({
style,
container = installed,
postponeDetect,
}) {
const entry = template.style.cloneNode(true);
entry.setAttribute('style-id', style.id);
Object.assign(entry, {
id: 'style-' + style.id,
styleId: style.id,
className: entry.className + ' ' + (style.enabled ? 'enabled' : 'disabled'),
onmousedown: openEditorOnMiddleclick,
onauxclick: openEditorOnMiddleclick,
});
const checkbox = $('.checker', entry);
Object.assign(checkbox, {
id: 'style-' + style.id,
checked: style.enabled,
onclick: EntryOnClick.toggle,
});
const editLink = $('.style-edit-link', entry);
Object.assign(editLink, {
href: editLink.getAttribute('href') + style.id,
onclick: openLinkInTabOrWindow,
});
const styleName = $('.style-name', entry);
Object.assign(styleName, {
htmlFor: 'style-' + style.id,
onclick: EntryOnClick.name,
});
styleName.checkbox = checkbox;
styleName.appendChild(document.createTextNode(style.name));
$('.enable', entry).onclick = EntryOnClick.toggle;
$('.disable', entry).onclick = EntryOnClick.toggle;
$('.delete', entry).onclick = EntryOnClick.delete;
if (postponeDetect) {
setTimeout(detectSloppyRegexps, 0, {entry, style});
} else {
detectSloppyRegexps({entry, style});
}
const oldElement = $('#style-' + style.id);
if (oldElement) {
oldElement.parentNode.replaceChild(entry, oldElement);
} else {
container.appendChild(entry);
}
}
class EntryOnClick {
static name(event) {
this.checkbox.click();
event.preventDefault();
}
static toggle(event) {
saveStyle({
id: getClickedStyleId(event),
enabled: this.type == 'checkbox' ? this.checked : this.matches('.enable'),
});
}
static delete(event) {
const id = getClickedStyleId(event);
const box = $('#confirm');
box.dataset.display = true;
box.style.cssText = '';
$('b', box).textContent = (cachedStyles.byId.get(id) || {}).name;
$('[data-cmd="ok"]', box).onclick = () => confirm(true);
$('[data-cmd="cancel"]', box).onclick = () => confirm(false);
window.onkeydown = event => {
if (!event.shiftKey && !event.ctrlKey && !event.altKey && !event.metaKey
&& (event.keyCode == 13 || event.keyCode == 27)) {
event.preventDefault();
confirm(event.keyCode == 13);
}
};
function confirm(ok) {
window.onkeydown = null;
animateElement(box, {className: 'lights-on'})
.then(() => (box.dataset.display = false));
if (ok) {
deleteStyle(id).then(() => {
// update view with 'No styles installed for this site' message
if (!installed.children.length) {
showStyles([]);
}
});
}
}
}
static indicator(event) {
const entry = getClickedStyleElement(event);
const info = template.regexpProblemExplanation.cloneNode(true);
$$('#' + info.id).forEach(el => el.remove());
$$('a', info).forEach(el => (el.onclick = openURLandHide));
$$('button', info).forEach(el => (el.onclick = EntryOnClick.closeExplanation));
entry.appendChild(info);
}
static closeExplanation(event) {
$('#regexp-explanation').remove();
}
}
function openLinkInTabOrWindow(event) {
if (!prefs.get('openEditInWindow', false)) {
openURLandHide(event);
return;
}
event.preventDefault();
chrome.windows.create(
Object.assign({
url: event.target.href
}, prefs.get('windowPosition', {}))
);
close();
}
function openEditorOnMiddleclick(event) {
if (event.button != 1) {
return;
}
// open an editor on middleclick
if (event.target.matches('.entry, .style-name, .style-edit-link')) {
$('.style-edit-link', this).click();
event.preventDefault();
return;
}
// prevent the popup being opened in a background tab
// when an irrelevant link was accidentally clicked
if (event.target.closest('a')) {
event.preventDefault();
return;
}
}
function openURLandHide(event) {
event.preventDefault();
openURL({url: this.href})
.then(close);
}
function handleUpdate(style) {
if ($('#style-' + style.id)) {
createStyleElement({style});
return;
}
// Add an entry when a new style for the current url is installed
if (tabURL && getApplicableSections({style, matchUrl: tabURL, stopOnFirst: true}).length) {
$('#unavailable').style.display = 'none';
createStyleElement({style});
}
}
function handleDelete(id) {
$$('#style-' + id).forEach(el => el.remove());
}
/*
According to CSS4 @document specification the entire URL must match.
Stylish-for-Chrome implemented it incorrectly since the very beginning.
We'll detect styles that abuse the bug by finding the sections that
would have been applied by Stylish but not by us as we follow the spec.
Additionally we'll check for invalid regexps.
*/
function detectSloppyRegexps({entry, style}) {
const {
appliedSections = getApplicableSections({style, matchUrl: tabURL}),
wannabeSections = getApplicableSections({style, matchUrl: tabURL, strictRegexp: false}),
} = style;
compileStyleRegExps({style, compileAll: true});
entry.hasInvalidRegexps = wannabeSections.some(section =>
section.regexps.some(rx => !cachedStyles.regexps.has(rx)));
entry.sectionsSkipped = wannabeSections.length - appliedSections.length;
if (!appliedSections.length) {
entry.classList.add('not-applied');
$('.style-name', entry).title = t('styleNotAppliedRegexpProblemTooltip');
}
if (entry.sectionsSkipped || entry.hasInvalidRegexps) {
entry.classList.toggle('regexp-partial', entry.sectionsSkipped);
entry.classList.toggle('regexp-invalid', entry.hasInvalidRegexps);
const indicator = template.regexpProblemIndicator.cloneNode(true);
indicator.appendChild(document.createTextNode(entry.sectionsSkipped || '!'));
indicator.onclick = EntryOnClick.indicator;
$('.main-controls', entry).appendChild(indicator);
}
}