Midora/extension/content.js

312 lines
10 KiB
JavaScript
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2018-09-16 12:27:42 +02:00
var browser = browser || chrome;
var hostname = typeof (location) != 'undefined' ? location.hostname : '';
if (hostname.startsWith('www.')) {
hostname = hostname.substring(4);
}
if (hostname.endsWith('.reddit.com')) hostname = 'reddit.com';
var myself = null;
if (hostname == 'reddit.com') {
myself = document.querySelector('#header-bottom-right .user a');
if (!myself) {
var m = document.querySelector('#USER_DROPDOWN_ID');
if (m) {
m = [...m.querySelectorAll('*')].filter(x => x.childNodes.length == 1 && x.firstChild.nodeType == 3).map(x => x.textContent)[0]
if (m) myself = 'reddit.com/user/' + m;
}
}
}
if (hostname == 'facebook.com') {
var m = document.querySelector("[id^='profile_pic_header_']")
if (m) myself = 'facebook.com/' + m.id.match(/header_(\d+)/)[1];
}
if (hostname == 'twitter.com') {
myself = document.querySelector('.DashUserDropdown-userInfo a');
}
if (myself && (myself.href || myself.startsWith('http:') || myself.startsWith('https:')))
myself = getIdentifier(myself);
//console.log('Myself: ' + myself)
function init() {
updateAllLabels();
var observer = new MutationObserver(mutationsList => {
for (var mutation of mutationsList) {
if (mutation.type == 'childList') {
for (var node of mutation.addedNodes) {
if (node.tagName == 'A') {
initLink(node);
}
if (node.querySelectorAll) {
for (var subnode of node.querySelectorAll('a')) {
initLink(subnode);
}
}
}
}
}
solvePendingLabels();
});
observer.observe(document.body, {
childList: true,
subtree: true
});
}
function updateAllLabels(refresh) {
if (refresh) knownLabels = {};
var links = document.links;
for (var i = 0; i < links.length; i++) {
var a = links[i];
initLink(a);
}
solvePendingLabels();
}
var knownLabels = {};
var labelsToSolve = [];
function solvePendingLabels() {
if (!labelsToSolve.length) return;
var uniqueIdentifiers = Array.from(new Set(labelsToSolve.map(x => x.identifier)));
var tosolve = labelsToSolve;
labelsToSolve = [];
browser.runtime.sendMessage({ ids: uniqueIdentifiers, myself: myself }, response => {
for (item of tosolve) {
var label = response[item.identifier];
knownLabels[item.identifier] = label || '';
applyLabel(item.element, item.identifier);
}
});
}
function applyLabel(a, identifier) {
if (a.assignedCssLabel) {
a.classList.remove('assigned-label-' + a.assignedCssLabel);
a.classList.remove('has-assigned-label');
}
var label = a.assignedLabel = knownLabels[identifier] || '';
// https://rationalwiki.org/wiki/RationalWiki:Webshites
a.assignedCssLabel =
!label ? '' :
label == 'liked' ? 'liked' :
label == 'disliked' ? 'disliked' :
label == 'rw-radfem' || label == 'terf' || label == 'transphobic' || label == 'anti-lgbt' ? 'transphobic' :
label == 't-friendly' ? 't-friendly' :
label == 'rw-skeptic' || label == 'rw-liberal' || label == 'rw-feminism' || label == 'science' ? 'good' :
'bad';
if (a.assignedCssLabel) {
a.classList.add('assigned-label-' + a.assignedCssLabel);
a.classList.add('has-assigned-label');
}
}
function initLink(a) {
var identifier = getIdentifier(a);
if (!identifier) return;
var label = knownLabels[identifier];
if (label === undefined) {
labelsToSolve.push({ element: a, identifier: identifier });
return;
}
applyLabel(a, identifier);
}
var currentlySelectedEntity = null;
function isHostedOn(/** @type {string}*/fullHost, /** @type {string}*/baseHost) {
if (baseHost.length > fullHost.length) return false;
if (baseHost.length == fullHost.length) return baseHost == fullHost;
var k = fullHost.charCodeAt(fullHost.length - baseHost.length - 1);
if (k == 0x2E) return fullHost.endsWith(baseHost);
else return false;
}
function getQuery(/** @type {string}*/search) {
if (!search) return {};
var s = {};
if (search.startsWith('?')) search = search.substring(1);
for (var pair of search.split('&')) {
var z = pair.split('=');
if (z.length != 2) continue;
s[decodeURIComponent(z[0]).replace(/\+/g, ' ')] = decodeURIComponent(z[1].replace(/\+/g, ' '));
}
return s;
}
function takeFirstPathComponents(/** @type {string}*/path, /** @type {number}*/num) {
var m = path.split('/')
m = m.slice(1, 1 + num);
if (m.length && !m[m.length - 1]) m.length--;
return '/' + m.join('/');
}
function getCurrentFacebookPageId() {
// page
var elem = document.querySelector("a[rel=theater][aria-label='Profile picture']");
if (elem) {
var p = elem.href.match(/facebook\.com\/(\d+)/)
if (p) return p[1];
}
// page (does not work if page is loaded directly)
elem = document.querySelector("[ajaxify^='/page_likers_and_visitors_dialog']")
if (elem) return elem.getAttribute('ajaxify').match(/\/(\d+)\//)[1];
// group
elem = document.querySelector("[id^='headerAction_']");
if (elem) return elem.id.match(/_(\d+)/)[1];
// profile
elem = document.querySelector('#pagelet_timeline_main_column');
if (elem && elem.dataset.gt) return JSON.parse(elem.dataset.gt).profile_owner;
return null;
}
function getIdentifier(urlstr) {
if (!urlstr) return null;
if (hostname == 'facebook.com') {
var parent = urlstr.parentElement;
if (parent && (parent.tagName == 'H1' || parent.id == 'fb-timeline-cover-name')) {
var id = getCurrentFacebookPageId();
//console.log('Current fb page: ' + id)
if (id)
return 'facebook.com/' + id;
}
if (urlstr.dataset) {
var hovercard = urlstr.dataset.hovercard;
if (hovercard) {
var id = hovercard.match(/id=(\d+)/)[1];
if (id)
return 'facebook.com/' + id;
}
var gt = urlstr.dataset.gt;
if (gt) {
var gtParsed = JSON.parse(gt);
if (gtParsed.engagement && gtParsed.engagement.eng_tid) {
return 'facebook.com/' + gtParsed.engagement.eng_tid;
}
}
var p = urlstr;
while (p) {
var bt = p.dataset.bt;
if (bt) {
var btParsed = JSON.parse(bt);
if (btParsed.id) return 'facebook.com/' + btParsed.id;
}
p = p.parentElement;
}
}
}
if (urlstr.href !== undefined) urlstr = urlstr.href;
if (!urlstr) return null;
if (urlstr.endsWith('#')) return null;
try {
var url = new URL(urlstr);
} catch (e) {
return null;
}
if (url.protocol != 'http:' && url.protocol != 'https:') return null;
if (url.href.indexOf('http', 1) != -1) {
var s = getQuery(url.search);
urlstr = null;
for (var key in s) {
if (s.hasOwnProperty(key)) {
var element = s[key];
if (element.startsWith('http:') || element.startsWith('https')) {
urlstr = element;
break;
}
}
}
if (urlstr == null) {
urlstr = url.href.substring(url.href.indexOf('http', 1))
}
try {
url = new URL(urlstr);
} catch (e) { }
}
var host = url.hostname;
if (isHostedOn(host, 'web.archive.org')) {
var match = url.href.match(/\/web\/\w+\/(.*)/);
if (!match) return null;
url = new URL('http://' + match[1]);
host = url.hostname;
}
if (host.startsWith('www.')) host = host.substring(4);
if (isHostedOn(host, 'facebook.com')) {
var s = getQuery(url.search);
var p = url.pathname.replace('/pg/', '/');
return 'facebook.com/' + (s.story_fbid || s.set || s.story_fbid || s._ft_ || s.ft_id || s.id || takeFirstPathComponents(p, p.startsWith('/groups/') ? 2 : 1).substring(1));
}
if (isHostedOn(host, 'reddit.com')) {
return 'reddit.com' + takeFirstPathComponents(url.pathname.replace('/u/', '/user/'), 2).toLowerCase();
}
if (isHostedOn(host, 'twitter.com')) {
return 'twitter.com' + takeFirstPathComponents(url.pathname, 1).toLowerCase()
}
if (isHostedOn(host, 'youtube.com')) {
return 'youtube.com' + takeFirstPathComponents(url.pathname, 2);
}
if (host.indexOf('.blogspot.') != -1) {
return host.match(/([a-zA-Z0-9\-]*)\.blogspot/)[1].toLowerCase() + '.blogspot.com';
}
var id = host;
if (id.startsWith('www.')) id = id.substr(4);
if (id.startsWith('m.')) id = id.substr(2);
return id.toLowerCase();
}
init();
browser.runtime.onMessage.addListener((message, sender, sendResponse) => {
if (message.updateAllLabels) {
updateAllLabels(true);
return;
}
message.contextPage = window.location.href;
var target = message.elementId ? browser.menus.getTargetElement(message.elementId) : null;
//console.log(message.url)
var links = target ? [target] : [...document.getElementsByTagName('A')].filter(x => x.href == message.url)
//if (!links.length) console.log('Already empty :(')
var identifier = links.length ? getIdentifier(links[0]) : getIdentifier(message.url);
if (!identifier) return;
var snippets = links.map(node => {
while (node) {
var classList = node.classList;
if (hostname == 'facebook.com' && node.dataset && node.dataset.ftr) return node;
if (hostname == 'reddit.com' && (classList.contains('scrollerItem') || classList.contains('thing') || classList.contains('Comment'))) return node;
if (hostname == 'twitter.com' && (classList.contains('stream-item'))) return node;
node = node.parentElement;
}
//console.log('Reached the top without a satisfying element')
return null;
})
snippets = snippets.filter((item, pos) => item && snippets.indexOf(item) == pos);
message.identifier = identifier;
message.snippets = snippets.filter((item, pos) => pos <= 10).map(x => x.outerHTML);
sendResponse(message);
})