Adding upstream version 1.55.0+dfsg.upstream/1.55.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1530 insertions, 0 deletions

diff --git a/src/js/popup-fenix.js b/src/js/popup-fenix.js
new file mode 100644
index 0000000..b44b923
--- /dev/null
+++ b/src/js/popup-fenix.js
@@ -0,0 +1,1530 @@
+/*******************************************************************************
+
+    uBlock Origin - a comprehensive, efficient content blocker
+    Copyright (C) 2014-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+'use strict';
+
+import punycode from '../lib/punycode.js';
+import { i18n$ } from './i18n.js';
+import { dom, qs$, qsa$ } from './dom.js';
+
+/******************************************************************************/
+
+let popupFontSize = 'unset';
+vAPI.localStorage.getItemAsync('popupFontSize').then(value => {
+    if ( typeof value !== 'string' || value === 'unset' ) { return; }
+    document.body.style.setProperty('--font-size', value);
+    popupFontSize = value;
+});
+
+// https://github.com/chrisaljoudi/uBlock/issues/996
+//   Experimental: mitigate glitchy popup UI: immediately set the firewall
+//   pane visibility to its last known state. By default the pane is hidden.
+vAPI.localStorage.getItemAsync('popupPanelSections').then(bits => {
+    if ( typeof bits !== 'number' ) { return; }
+    setSections(bits);
+});
+
+/******************************************************************************/
+
+const messaging = vAPI.messaging;
+const scopeToSrcHostnameMap = {
+    '/': '*',
+    '.': ''
+};
+const hostnameToSortableTokenMap = new Map();
+const statsStr = i18n$('popupBlockedStats');
+const domainsHitStr = i18n$('popupHitDomainCount');
+
+let popupData = {};
+let dfPaneBuilt = false;
+let dfHotspots = null;
+const allHostnameRows = [];
+let cachedPopupHash = '';
+
+// https://github.com/gorhill/uBlock/issues/2550
+// Solution inspired from
+// - https://bugs.chromium.org/p/chromium/issues/detail?id=683314
+// - https://bugzilla.mozilla.org/show_bug.cgi?id=1332714#c17
+// Confusable character set from:
+// - http://unicode.org/cldr/utility/list-unicodeset.jsp?a=%5B%D0%B0%D1%81%D4%81%D0%B5%D2%BB%D1%96%D1%98%D3%8F%D0%BE%D1%80%D4%9B%D1%95%D4%9D%D1%85%D1%83%D1%8A%D0%AC%D2%BD%D0%BF%D0%B3%D1%B5%D1%A1%5D&g=gc&i=
+// Linked from:
+// - https://www.chromium.org/developers/design-documents/idn-in-google-chrome
+const reCyrillicNonAmbiguous = /[\u0400-\u042b\u042d-\u042f\u0431\u0432\u0434\u0436-\u043d\u0442\u0444\u0446-\u0449\u044b-\u0454\u0457\u0459-\u0460\u0462-\u0474\u0476-\u04ba\u04bc\u04be-\u04ce\u04d0-\u0500\u0502-\u051a\u051c\u051e-\u052f]/;
+const reCyrillicAmbiguous = /[\u042c\u0430\u0433\u0435\u043e\u043f\u0440\u0441\u0443\u0445\u044a\u0455\u0456\u0458\u0461\u0475\u04bb\u04bd\u04cf\u0501\u051b\u051d]/;
+
+/******************************************************************************/
+
+const cachePopupData = function(data) {
+    popupData = {};
+    scopeToSrcHostnameMap['.'] = '';
+    hostnameToSortableTokenMap.clear();
+
+    if ( typeof data !== 'object' ) {
+        return popupData;
+    }
+    popupData = data;
+    popupData.cnameMap = new Map(popupData.cnameMap);
+    scopeToSrcHostnameMap['.'] = popupData.pageHostname || '';
+    const hostnameDict = popupData.hostnameDict;
+    if ( typeof hostnameDict !== 'object' ) {
+        return popupData;
+    }
+    for ( const hostname in hostnameDict ) {
+        if ( hostnameDict.hasOwnProperty(hostname) === false ) { continue; }
+        let domain = hostnameDict[hostname].domain;
+        let prefix = hostname.slice(0, 0 - domain.length - 1);
+        // Prefix with space char for 1st-party hostnames: this ensure these
+        // will come first in list.
+        if ( domain === popupData.pageDomain ) {
+            domain = '\u0020';
+        }
+        hostnameToSortableTokenMap.set(
+            hostname,
+            domain + ' ' + prefix.split('.').reverse().join('.')
+        );
+    }
+    return popupData;
+};
+
+/******************************************************************************/
+
+const hashFromPopupData = function(reset = false) {
+    // It makes no sense to offer to refresh the behind-the-scene scope
+    if ( popupData.pageHostname === 'behind-the-scene' ) {
+        dom.cl.remove(dom.body, 'needReload');
+        return;
+    }
+
+    const hasher = [];
+    const rules = popupData.firewallRules;
+    for ( const key in rules ) {
+        const rule = rules[key];
+        if ( rule === undefined ) { continue; }
+        hasher.push(rule);
+    }
+    hasher.sort();
+    hasher.push(
+        dom.cl.has('body', 'off'),
+        dom.cl.has('#no-large-media', 'on'),
+        dom.cl.has('#no-cosmetic-filtering', 'on'),
+        dom.cl.has('#no-remote-fonts', 'on'),
+        dom.cl.has('#no-scripting', 'on')
+    );
+
+    const hash = hasher.join('');
+    if ( reset ) {
+        cachedPopupHash = hash;
+    }
+    dom.cl.toggle(dom.body, 'needReload',
+        hash !== cachedPopupHash || popupData.hasUnprocessedRequest === true
+    );
+};
+
+/******************************************************************************/
+
+// greater-than-zero test
+
+const gtz = n => typeof n === 'number' && n > 0;
+
+/******************************************************************************/
+
+const formatNumber = function(count) {
+    if ( typeof count !== 'number' ) { return ''; }
+    if ( count < 1e6 ) { return count.toLocaleString(); }
+
+    if (
+        intlNumberFormat === undefined &&
+        Intl.NumberFormat instanceof Function
+    ) {
+        const intl = new Intl.NumberFormat(undefined, {
+            notation: 'compact',
+            maximumSignificantDigits: 4
+        });
+        if (
+            intl.resolvedOptions instanceof Function &&
+            intl.resolvedOptions().hasOwnProperty('notation')
+        ) {
+            intlNumberFormat = intl;
+        }
+    }
+
+    if ( intlNumberFormat ) {
+        return intlNumberFormat.format(count);
+    }
+
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/1027#issuecomment-629696676
+    //   For platforms which do not support proper number formatting, use
+    //   a poor's man compact form, which unfortunately is not i18n-friendly.
+    count /= 1000000;
+    if ( count >= 100 ) {
+      count = Math.floor(count * 10) / 10;
+    } else if ( count > 10 ) {
+      count = Math.floor(count * 100) / 100;
+    } else {
+      count = Math.floor(count * 1000) / 1000;
+    }
+    return (count).toLocaleString(undefined) + '\u2009M';
+};
+
+let intlNumberFormat;
+
+/******************************************************************************/
+
+const safePunycodeToUnicode = function(hn) {
+    const pretty = punycode.toUnicode(hn);
+    return pretty === hn ||
+           reCyrillicAmbiguous.test(pretty) === false ||
+           reCyrillicNonAmbiguous.test(pretty)
+        ? pretty
+        : hn;
+};
+
+/******************************************************************************/
+
+const updateFirewallCellCount = function(cells, allowed, blocked) {
+    for ( const cell of cells ) {
+        if ( gtz(allowed) ) {
+            dom.attr(cell, 'data-acount',
+                Math.min(Math.ceil(Math.log(allowed + 1) / Math.LN10), 3)
+            );
+        } else {
+            dom.attr(cell, 'data-acount', '0');
+        }
+        if ( gtz(blocked) ) {
+            dom.attr(cell, 'data-bcount',
+                Math.min(Math.ceil(Math.log(blocked + 1) / Math.LN10), 3)
+            );
+        } else {
+            dom.attr(cell, 'data-bcount', '0');
+        }
+    }
+};
+
+/******************************************************************************/
+
+const updateFirewallCellRule = function(cells, scope, des, type, rule) {
+    const ruleParts = rule !== undefined ? rule.split(' ') : undefined;
+
+    for ( const cell of cells ) {
+        if ( ruleParts === undefined ) {
+            dom.attr(cell, 'class', null);
+            continue;
+        }
+
+        const action = updateFirewallCellRule.actionNames[ruleParts[3]];
+        dom.attr(cell, 'class', `${action}Rule`);
+
+        // Use dark shade visual cue if the rule is specific to the cell.
+        if (
+            (ruleParts[1] !== '*' || ruleParts[2] === type) &&
+            (ruleParts[1] === des) &&
+            (ruleParts[0] === scopeToSrcHostnameMap[scope])
+            
+        ) {
+            dom.cl.add(cell, 'ownRule');
+        }
+    }
+};
+
+updateFirewallCellRule.actionNames = { '1': 'block', '2': 'allow', '3': 'noop' };
+
+/******************************************************************************/
+
+const updateAllFirewallCells = function(doRules = true, doCounts = true) {
+    const { pageDomain } = popupData;
+    const rowContainer = qs$('#firewall');
+    const rows = qsa$(rowContainer, '#firewall > [data-des][data-type]');
+
+    let a1pScript = 0, b1pScript = 0;
+    let a3pScript = 0, b3pScript = 0;
+    let a3pFrame = 0, b3pFrame = 0;
+
+    for ( const row of rows ) {
+        const des = dom.attr(row, 'data-des');
+        const type = dom.attr(row, 'data-type');
+        if ( doRules ) {
+            updateFirewallCellRule(
+                qsa$(row, ':scope > span[data-src="/"]'),
+                '/',
+                des,
+                type,
+                popupData.firewallRules[`/ ${des} ${type}`]
+            );
+        }
+        const cells = qsa$(row, ':scope > span[data-src="."]');
+        if ( doRules ) {
+            updateFirewallCellRule(
+                cells,
+                '.',
+                des,
+                type,
+                popupData.firewallRules[`. ${des} ${type}`]
+            );
+        }
+        if ( des === '*' || type !== '*' ) { continue; }
+        if ( doCounts === false ) { continue; }
+        const hnDetails = popupData.hostnameDict[des];
+        if ( hnDetails === undefined ) {
+            updateFirewallCellCount(cells);
+            continue;
+        }
+        const { allowed, blocked } = hnDetails.counts;
+        updateFirewallCellCount([ cells[0] ], allowed.any, blocked.any);
+        const { totals } = hnDetails;
+        if ( totals !== undefined ) {
+            updateFirewallCellCount([ cells[1] ], totals.allowed.any, totals.blocked.any);
+        }
+        if ( hnDetails.domain === pageDomain ) {
+            a1pScript += allowed.script; b1pScript += blocked.script;
+        } else {
+            a3pScript += allowed.script; b3pScript += blocked.script;
+            a3pFrame += allowed.frame; b3pFrame += blocked.frame;
+        }
+    }
+
+    if ( doCounts ) {
+        const fromType = type =>
+            qsa$(`#firewall > [data-des="*"][data-type="${type}"] > [data-src="."]`);
+        updateFirewallCellCount(fromType('1p-script'), a1pScript, b1pScript);
+        updateFirewallCellCount(fromType('3p-script'), a3pScript, b3pScript);
+        dom.cl.toggle(rowContainer, 'has3pScript', a3pScript !== 0 || b3pScript !== 0);
+        updateFirewallCellCount(fromType('3p-frame'), a3pFrame, b3pFrame);
+        dom.cl.toggle(rowContainer, 'has3pFrame', a3pFrame !== 0 || b3pFrame !== 0);
+    }
+
+    dom.cl.toggle(dom.body, 'needSave', popupData.matrixIsDirty === true);
+};
+
+/******************************************************************************/
+
+// Compute statistics useful only to firewall entries -- we need to call
+// this only when overview pane needs to be rendered.
+
+const expandHostnameStats = ( ) => {
+    let dnDetails;
+    for ( const des of allHostnameRows ) {
+        const hnDetails = popupData.hostnameDict[des];
+        const { domain, counts } = hnDetails;
+        const isDomain = des === domain;
+        const { allowed: hnAllowed, blocked: hnBlocked } = counts;
+        if ( isDomain ) {
+            dnDetails = hnDetails;
+            dnDetails.totals = JSON.parse(JSON.stringify(dnDetails.counts));
+        } else {
+            const { allowed: dnAllowed, blocked: dnBlocked } = dnDetails.totals;
+            dnAllowed.any += hnAllowed.any;
+            dnBlocked.any += hnBlocked.any;
+        }
+        hnDetails.hasScript = hnAllowed.script !== 0 || hnBlocked.script !== 0;
+        dnDetails.hasScript = dnDetails.hasScript || hnDetails.hasScript;
+        hnDetails.hasFrame = hnAllowed.frame !== 0 || hnBlocked.frame !== 0;
+        dnDetails.hasFrame = dnDetails.hasFrame || hnDetails.hasFrame;
+    }
+};
+
+/******************************************************************************/
+
+const buildAllFirewallRows = function() {
+    // Do this before removing the rows
+    if ( dfHotspots === null ) {
+        dfHotspots = qs$('#actionSelector');
+        dom.on(dfHotspots, 'click', setFirewallRuleHandler);
+    }
+    dfHotspots.remove();
+
+    // This must be called before we create the rows.
+    expandHostnameStats();
+
+    // Update incrementally: reuse existing rows if possible.
+    const rowContainer = qs$('#firewall');
+    const toAppend = document.createDocumentFragment();
+    const rowTemplate = qs$('#templates > div[data-des=""][data-type="*"]');
+    const { cnameMap, hostnameDict, pageDomain, pageHostname } = popupData;
+
+    let row = qs$(rowContainer, 'div[data-des="*"][data-type="3p-frame"] + div');
+
+    for ( const des of allHostnameRows ) {
+        if ( row === null ) {
+            row = dom.clone(rowTemplate);
+            toAppend.appendChild(row);
+        }
+        dom.attr(row, 'data-des', des);
+
+        const hnDetails = hostnameDict[des] || {};
+        const isDomain = des === hnDetails.domain;
+        const prettyDomainName = des.includes('xn--')
+            ? punycode.toUnicode(des)
+            : des;
+        const isPunycoded = prettyDomainName !== des;
+
+        if ( isDomain && row.childElementCount < 4 ) {
+            row.append(dom.clone(row.children[2]));
+        } else if ( isDomain === false && row.childElementCount === 4 ) {
+            row.children[3].remove();
+        }
+
+        const span = qs$(row, 'span:first-of-type');
+        dom.text(qs$(span, ':scope > span > span'), prettyDomainName);
+
+        const classList = row.classList;
+
+        let desExtra = '';
+        if ( classList.toggle('isCname', cnameMap.has(des)) ) {
+            desExtra = punycode.toUnicode(cnameMap.get(des));
+        } else if (
+            isDomain && isPunycoded &&
+            reCyrillicAmbiguous.test(prettyDomainName) &&
+            reCyrillicNonAmbiguous.test(prettyDomainName) === false
+        ) {
+            desExtra = des;
+        }
+        dom.text(qs$(span, 'sub'), desExtra);
+
+        classList.toggle('isRootContext', des === pageHostname);
+        classList.toggle('is3p', hnDetails.domain !== pageDomain);
+        classList.toggle('isDomain', isDomain);
+        classList.toggle('hasSubdomains', isDomain && hnDetails.hasSubdomains);
+        classList.toggle('isSubdomain', !isDomain);
+        const { counts } = hnDetails;
+        classList.toggle('allowed', gtz(counts.allowed.any));
+        classList.toggle('blocked', gtz(counts.blocked.any));
+        const { totals } = hnDetails;
+        classList.toggle('totalAllowed', gtz(totals && totals.allowed.any));
+        classList.toggle('totalBlocked', gtz(totals && totals.blocked.any));
+        classList.toggle('hasScript', hnDetails.hasScript === true);
+        classList.toggle('hasFrame', hnDetails.hasFrame === true);
+        classList.toggle('expandException', expandExceptions.has(hnDetails.domain));
+
+        row = row.nextElementSibling;
+    }
+
+    // Remove unused trailing rows
+    if ( row !== null ) {
+        while ( row.nextElementSibling !== null ) {
+            row.nextElementSibling.remove();
+        }
+        row.remove();
+    }
+
+    // Add new rows all at once
+    if ( toAppend.childElementCount !== 0 ) {
+        rowContainer.append(toAppend);
+    }
+
+    if ( dfPaneBuilt !== true && popupData.advancedUserEnabled ) {
+        dom.on('#firewall', 'click', 'span[data-src]', unsetFirewallRuleHandler);
+        dom.on('#firewall', 'mouseenter', 'span[data-src]', mouseenterCellHandler);
+        dom.on('#firewall', 'mouseleave', 'span[data-src]', mouseleaveCellHandler);
+        dfPaneBuilt = true;
+    }
+
+    updateAllFirewallCells();
+};
+
+/******************************************************************************/
+
+const hostnameCompare = function(a, b) {
+    let ha = a;
+    if ( !reIP.test(ha) ) {
+        ha = hostnameToSortableTokenMap.get(ha) || ' ';
+    }
+    let hb = b;
+    if ( !reIP.test(hb) ) {
+        hb = hostnameToSortableTokenMap.get(hb) || ' ';
+    }
+    const ca = ha.charCodeAt(0);
+    const cb = hb.charCodeAt(0);
+    return ca !== cb ? ca - cb : ha.localeCompare(hb);
+};
+
+const reIP = /(\d|\])$/;
+
+/******************************************************************************/
+
+function filterFirewallRows() {
+    const firewallElem = qs$('#firewall');
+    const elems = qsa$('#firewall .filterExpressions span[data-expr]');
+    let not = false;
+    for ( const elem of elems ) {
+        const on = dom.cl.has(elem, 'on');
+        switch ( elem.dataset.expr ) {
+            case 'not':
+                not = on;
+                break;
+            case 'blocked':
+                dom.cl.toggle(firewallElem, 'showBlocked', !not && on);
+                dom.cl.toggle(firewallElem, 'hideBlocked', not && on);
+                break;
+            case 'allowed':
+                dom.cl.toggle(firewallElem, 'showAllowed', !not && on);
+                dom.cl.toggle(firewallElem, 'hideAllowed', not && on);
+                break;
+            case 'script':
+                dom.cl.toggle(firewallElem, 'show3pScript', !not && on);
+                dom.cl.toggle(firewallElem, 'hide3pScript', not && on);
+                break;
+            case 'frame':
+                dom.cl.toggle(firewallElem, 'show3pFrame', !not && on);
+                dom.cl.toggle(firewallElem, 'hide3pFrame', not && on);
+                break;
+            default:
+                break;
+        }
+    }
+}
+
+dom.on('#firewall .filterExpressions', 'click', 'span[data-expr]', ev => {
+    const target = ev.target;
+    dom.cl.toggle(target, 'on');
+    switch ( target.dataset.expr ) {
+        case 'blocked':
+            if ( dom.cl.has(target, 'on') === false ) { break; }
+            dom.cl.remove('#firewall .filterExpressions span[data-expr="allowed"]', 'on');
+            break;
+        case 'allowed':
+            if ( dom.cl.has(target, 'on') === false ) { break; }
+            dom.cl.remove('#firewall .filterExpressions span[data-expr="blocked"]', 'on');
+            break;
+    }
+    filterFirewallRows();
+    const elems = qsa$('#firewall .filterExpressions span[data-expr]');
+    const filters = Array.from(elems) .map(el => dom.cl.has(el, 'on') ? '1' : '0');
+    filters.unshift('00');
+    vAPI.localStorage.setItem('firewallFilters', filters.join(' '));
+});
+
+{
+    vAPI.localStorage.getItemAsync('firewallFilters').then(v => {
+        if ( v === null ) { return; }
+        const filters = v.split(' ');
+        if ( filters.shift() !== '00' ) { return; }
+        if ( filters.every(v => v === '0') ) { return; }
+        const elems = qsa$('#firewall .filterExpressions span[data-expr]');
+        for ( let i = 0; i < elems.length; i++ ) {
+            if ( filters[i] === '0' ) { continue; }
+            dom.cl.add(elems[i], 'on');
+        }
+        filterFirewallRows();
+    });
+}
+
+/******************************************************************************/
+
+const renderPrivacyExposure = function() {
+    const allDomains = {};
+    let allDomainCount = 0;
+    let touchedDomainCount = 0;
+
+    allHostnameRows.length = 0;
+
+    // Sort hostnames. First-party hostnames must always appear at the top
+    // of the list.
+    const { hostnameDict } = popupData;
+    const desHostnameDone = new Set();
+    const keys = Object.keys(hostnameDict).sort(hostnameCompare);
+    for ( const des of keys ) {
+        // Specific-type rules -- these are built-in
+        if ( des === '*' || desHostnameDone.has(des) ) { continue; }
+        const hnDetails = hostnameDict[des];
+        const { domain, counts } = hnDetails;
+        if ( allDomains.hasOwnProperty(domain) === false ) {
+            allDomains[domain] = false;
+            allDomainCount += 1;
+        }
+        if ( gtz(counts.allowed.any) ) {
+            if ( allDomains[domain] === false ) {
+                allDomains[domain] = true;
+                touchedDomainCount += 1;
+            }
+        }
+        const dnDetails = hostnameDict[domain];
+        if ( dnDetails !== undefined ) {
+            if ( des !== domain ) {
+                dnDetails.hasSubdomains = true;
+            } else if ( dnDetails.hasSubdomains === undefined ) {
+                dnDetails.hasSubdomains = false;
+            }
+        }
+        allHostnameRows.push(des);
+        desHostnameDone.add(des);
+    }
+
+    const summary = domainsHitStr
+        .replace('{{count}}', touchedDomainCount.toLocaleString())
+        .replace('{{total}}', allDomainCount.toLocaleString());
+    dom.text('[data-i18n^="popupDomainsConnected"] + span', summary);
+};
+
+/******************************************************************************/
+
+const updateHnSwitches = function() {
+    dom.cl.toggle('#no-popups', 'on', popupData.noPopups === true);
+    dom.cl.toggle('#no-large-media', 'on', popupData.noLargeMedia === true);
+    dom.cl.toggle('#no-cosmetic-filtering', 'on',popupData.noCosmeticFiltering === true);
+    dom.cl.toggle('#no-remote-fonts', 'on', popupData.noRemoteFonts === true);
+    dom.cl.toggle('#no-scripting', 'on', popupData.noScripting === true);
+};
+
+/******************************************************************************/
+
+// Assume everything has to be done incrementally.
+
+const renderPopup = function() {
+    if ( popupData.tabTitle ) {
+        document.title = popupData.appName + ' - ' + popupData.tabTitle;
+    }
+
+    const isFiltering = popupData.netFilteringSwitch;
+
+    dom.cl.toggle(dom.body, 'advancedUser', popupData.advancedUserEnabled === true);
+    dom.cl.toggle(dom.body, 'off', popupData.pageURL === '' || isFiltering !== true);
+    dom.cl.toggle(dom.body, 'needSave', popupData.matrixIsDirty === true);
+
+    // The hostname information below the power switch
+    {
+        const [ elemHn, elemDn ] = qs$('#hostname').children;
+        const { pageDomain, pageHostname } = popupData;
+        if ( pageDomain !== '' ) {
+            dom.text(elemDn, safePunycodeToUnicode(pageDomain));
+            dom.text(elemHn, pageHostname !== pageDomain
+                ? safePunycodeToUnicode(pageHostname.slice(0, -pageDomain.length - 1)) + '.'
+                : ''
+            );
+        } else {
+            dom.text(elemDn, '');
+            dom.text(elemHn, '');
+        }
+    }
+
+    dom.cl.toggle(
+        '#basicTools',
+        'canPick',
+        popupData.canElementPicker === true && isFiltering
+    );
+
+    let blocked, total;
+    if ( popupData.pageCounts !== undefined ) {
+        const counts = popupData.pageCounts;
+        blocked = counts.blocked.any;
+        total = blocked + counts.allowed.any;
+    } else {
+        blocked = 0;
+        total = 0;
+    }
+    let text;
+    if ( total === 0 ) {
+        text = formatNumber(0);
+    } else {
+        text = statsStr.replace('{{count}}', formatNumber(blocked))
+                       .replace('{{percent}}', formatNumber(Math.floor(blocked * 100 / total)));
+    }
+    dom.text('[data-i18n^="popupBlockedOnThisPage"] + span', text);
+
+    blocked = popupData.globalBlockedRequestCount;
+    total = popupData.globalAllowedRequestCount + blocked;
+    if ( total === 0 ) {
+        text = formatNumber(0);
+    } else {
+        text = statsStr.replace('{{count}}', formatNumber(blocked))
+                       .replace('{{percent}}', formatNumber(Math.floor(blocked * 100 / total)));
+    }
+    dom.text('[data-i18n^="popupBlockedSinceInstall"] + span', text);
+
+    // This will collate all domains, touched or not
+    renderPrivacyExposure();
+
+    // Extra tools
+    updateHnSwitches();
+
+    // Report popup count on badge
+    total = popupData.popupBlockedCount;
+    dom.text(
+        '#no-popups .fa-icon-badge',
+        total ? Math.min(total, 99).toLocaleString() : ''
+    );
+
+    // Report large media count on badge
+    total = popupData.largeMediaCount;
+    dom.text(
+        '#no-large-media .fa-icon-badge',
+        total ? Math.min(total, 99).toLocaleString() : ''
+    );
+
+    // Report remote font count on badge
+    total = popupData.remoteFontCount;
+    dom.text(
+        '#no-remote-fonts .fa-icon-badge',
+        total ? Math.min(total, 99).toLocaleString() : ''
+    );
+
+    // Unprocesseed request(s) warning
+    dom.cl.toggle(dom.root, 'warn', popupData.hasUnprocessedRequest === true);
+
+    dom.cl.toggle(dom.html, 'colorBlind', popupData.colorBlindFriendly === true);
+
+    setGlobalExpand(popupData.firewallPaneMinimized === false, true);
+
+    // Build dynamic filtering pane only if in use
+    if ( (computedSections() & sectionFirewallBit) !== 0 ) {
+        buildAllFirewallRows();
+    }
+
+    renderTooltips();
+};
+
+/******************************************************************************/
+
+dom.on('.dismiss', 'click', ( ) => {
+    messaging.send('popupPanel', {
+        what: 'dismissUnprocessedRequest',
+        tabId: popupData.tabId,
+    }).then(( ) => {
+        popupData.hasUnprocessedRequest = false;
+        dom.cl.remove(dom.root, 'warn');
+    });
+});
+
+/******************************************************************************/
+
+// https://github.com/gorhill/uBlock/issues/2889
+//   Use tooltip for ARIA purpose.
+
+const renderTooltips = function(selector) {
+    for ( const [ key, details ] of tooltipTargetSelectors ) {
+        if ( selector !== undefined && key !== selector ) { continue; }
+        const elem = qs$(key);
+        if ( elem.hasAttribute('title') === false ) { continue; }
+        const text = i18n$(
+            details.i18n +
+            (qs$(details.state) === null ? '1' : '2')
+        );
+        dom.attr(elem, 'aria-label', text);
+        dom.attr(elem, 'title', text);
+    }
+};
+
+const tooltipTargetSelectors = new Map([
+    [
+        '#switch',
+        {
+            state: 'body.off',
+            i18n: 'popupPowerSwitchInfo',
+        }
+    ],
+    [
+        '#no-popups',
+        {
+            state: '#no-popups.on',
+            i18n: 'popupTipNoPopups'
+        }
+    ],
+    [
+        '#no-large-media',
+        {
+            state: '#no-large-media.on',
+            i18n: 'popupTipNoLargeMedia'
+        }
+    ],
+    [
+        '#no-cosmetic-filtering',
+        {
+            state: '#no-cosmetic-filtering.on',
+            i18n: 'popupTipNoCosmeticFiltering'
+        }
+    ],
+    [
+        '#no-remote-fonts',
+        {
+            state: '#no-remote-fonts.on',
+            i18n: 'popupTipNoRemoteFonts'
+        }
+    ],
+    [
+        '#no-scripting',
+        {
+            state: '#no-scripting.on',
+            i18n: 'popupTipNoScripting'
+        }
+    ],
+]);
+
+/******************************************************************************/
+
+// All rendering code which need to be executed only once.
+
+let renderOnce = function() {
+    renderOnce = function(){};
+
+    if ( popupData.fontSize !== popupFontSize ) {
+        popupFontSize = popupData.fontSize;
+        if ( popupFontSize !== 'unset' ) {
+            dom.body.style.setProperty('--font-size', popupFontSize);
+            vAPI.localStorage.setItem('popupFontSize', popupFontSize);
+        } else {
+            dom.body.style.removeProperty('--font-size');
+            vAPI.localStorage.removeItem('popupFontSize');
+        }
+    }
+
+    dom.text('#version', popupData.appVersion);
+
+    setSections(computedSections());
+
+    if ( popupData.uiPopupConfig !== undefined ) {
+        dom.attr(dom.body, 'data-ui', popupData.uiPopupConfig);
+    }
+
+    dom.cl.toggle(dom.body, 'no-tooltips', popupData.tooltipsDisabled === true);
+    if ( popupData.tooltipsDisabled === true ) {
+        dom.attr('[title]', 'title', null);
+    }
+
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/22
+    if ( popupData.advancedUserEnabled !== true ) {
+        dom.attr('#firewall [title][data-src]', 'title', null);
+    }
+
+    // This must be done the firewall is populated
+    if ( popupData.popupPanelHeightMode === 1 ) {
+        dom.cl.add(dom.body, 'vMin');
+    }
+
+    // Prevent non-advanced user opting into advanced user mode from harming
+    // themselves by disabling by default features generally suitable to
+    // filter list maintainers and actual advanced users.
+    if ( popupData.godMode ) {
+        dom.cl.add(dom.body, 'godMode');
+    }
+};
+
+/******************************************************************************/
+
+const renderPopupLazy = (( ) => {
+    let mustRenderCosmeticFilteringBadge = true;
+
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/756
+    //   Launch potentially expensive hidden elements-counting scriptlet on
+    //   demand only.
+    {
+        const sw = qs$('#no-cosmetic-filtering');
+        const badge = qs$(sw, ':scope .fa-icon-badge');
+        dom.text(badge, '\u22EF');
+
+        const render = ( ) => {
+            if ( mustRenderCosmeticFilteringBadge === false ) { return; }
+            mustRenderCosmeticFilteringBadge = false;
+            if ( dom.cl.has(sw, 'hnSwitchBusy') ) { return; }
+            dom.cl.add(sw, 'hnSwitchBusy');
+            messaging.send('popupPanel', {
+                what: 'getHiddenElementCount',
+                tabId: popupData.tabId,
+            }).then(count => {
+                let text;
+                if ( (count || 0) === 0 ) {
+                    text = '';
+                } else if ( count === -1 ) {
+                    text = '?';
+                } else {
+                    text = Math.min(count, 99).toLocaleString();
+                }
+                dom.text(badge, text);
+                dom.cl.remove(sw, 'hnSwitchBusy');
+            });
+        };
+
+        dom.on(sw, 'mouseenter', render, { passive: true });
+    }
+
+    return async function() {
+        const count = await messaging.send('popupPanel', {
+            what: 'getScriptCount',
+            tabId: popupData.tabId,
+        });
+        dom.text(
+            '#no-scripting .fa-icon-badge',
+            (count || 0) !== 0 ? Math.min(count, 99).toLocaleString() : ''
+        );
+        mustRenderCosmeticFilteringBadge = true;
+    };
+})();
+
+/******************************************************************************/
+
+const toggleNetFilteringSwitch = function(ev) {
+    if ( !popupData || !popupData.pageURL ) { return; }
+    messaging.send('popupPanel', {
+        what: 'toggleNetFiltering',
+        url: popupData.pageURL,
+        scope: ev.ctrlKey || ev.metaKey ? 'page' : '',
+        state: dom.cl.toggle(dom.body, 'off') === false,
+        tabId: popupData.tabId,
+    });
+    renderTooltips('#switch');
+    hashFromPopupData();
+};
+
+/******************************************************************************/
+
+const gotoZap = function() {
+    messaging.send('popupPanel', {
+        what: 'launchElementPicker',
+        tabId: popupData.tabId,
+        zap: true,
+    });
+
+    vAPI.closePopup();
+};
+
+/******************************************************************************/
+
+const gotoPick = function() {
+    messaging.send('popupPanel', {
+        what: 'launchElementPicker',
+        tabId: popupData.tabId,
+    });
+
+    vAPI.closePopup();
+};
+
+/******************************************************************************/
+
+const gotoReport = function() {
+    const popupPanel = {
+        blocked: popupData.pageCounts.blocked.any,
+    };
+    const reportedStates = [
+        { name: 'enabled', prop: 'netFilteringSwitch', expected: true },
+        { name: 'no-cosmetic-filtering', prop: 'noCosmeticFiltering', expected: false },
+        { name: 'no-large-media', prop: 'noLargeMedia', expected: false },
+        { name: 'no-popups', prop: 'noPopups', expected: false },
+        { name: 'no-remote-fonts', prop: 'noRemoteFonts', expected: false },
+        { name: 'no-scripting', prop: 'noScripting', expected: false },
+        { name: 'can-element-picker', prop: 'canElementPicker', expected: true },
+    ];
+    for ( const { name, prop, expected } of reportedStates ) {
+        if ( popupData[prop] === expected ) { continue; }
+        popupPanel[name] = !expected;
+    }
+    if ( hostnameToSortableTokenMap.size !== 0 ) {
+        const network = {};
+        const hostnames =
+            Array.from(hostnameToSortableTokenMap.keys()).sort(hostnameCompare);
+        for ( const hostname of hostnames ) {
+            const entry = popupData.hostnameDict[hostname];
+            const count = entry.counts.blocked.any;
+            if ( count === 0 ) { continue; }
+            const domain = entry.domain;
+            if ( network[domain] === undefined ) {
+                network[domain] = 0;
+            }
+            network[domain] += count;
+        }
+        if ( Object.keys(network).length !== 0 ) {
+            popupPanel.network = network;
+        }
+    }
+    messaging.send('popupPanel', {
+        what: 'launchReporter',
+        tabId: popupData.tabId,
+        pageURL: popupData.rawURL,
+        popupPanel,
+    });
+
+    vAPI.closePopup();
+};
+
+/******************************************************************************/
+
+const gotoURL = function(ev) {
+    if ( this.hasAttribute('href') === false ) { return; }
+
+    ev.preventDefault();
+
+    let url = dom.attr(ev.target, 'href');
+    if (
+        url === 'logger-ui.html#_' &&
+        typeof popupData.tabId === 'number'
+    ) {
+        url += '+' + popupData.tabId;
+    }
+
+    messaging.send('popupPanel', {
+        what: 'gotoURL',
+        details: {
+            url: url,
+            select: true,
+            index: -1,
+            shiftKey: ev.shiftKey
+        },
+    });
+
+    vAPI.closePopup();
+};
+
+/******************************************************************************/
+
+// The popup panel is made of sections. Visibility of sections can
+// be toggled on/off.
+
+const maxNumberOfSections = 6;
+const sectionFirewallBit = 0b10000;
+
+const computedSections = ( ) =>
+    popupData.popupPanelSections &
+   ~popupData.popupPanelDisabledSections |
+    popupData.popupPanelLockedSections;
+
+const sectionBitsFromAttribute = function() {
+    const attr = document.body.dataset.more;
+    if ( attr === '' ) { return 0; }
+    let bits = 0;
+    for ( const c of attr ) {
+        bits |= 1 << (c.charCodeAt(0) - 97);
+    }
+    return bits;
+};
+
+const sectionBitsToAttribute = function(bits) {
+    const attr = [];
+    for ( let i = 0; i < maxNumberOfSections; i++ ) {
+        const bit = 1 << i;
+        if ( (bits & bit) === 0 ) { continue; }
+        attr.push(String.fromCharCode(97 + i));
+    }
+    return attr.join('');
+};
+
+const setSections = function(bits) {
+    const value = sectionBitsToAttribute(bits);
+    const min = sectionBitsToAttribute(popupData.popupPanelLockedSections);
+    const max = sectionBitsToAttribute(
+        (1 << maxNumberOfSections) - 1 & ~popupData.popupPanelDisabledSections
+    );
+    document.body.dataset.more = value;
+    dom.cl.toggle('#lessButton', 'disabled', value === min);
+    dom.cl.toggle('#moreButton', 'disabled', value === max);
+};
+
+const toggleSections = function(more) {
+    const offbits = ~popupData.popupPanelDisabledSections;
+    const onbits = popupData.popupPanelLockedSections;
+    let currentBits = sectionBitsFromAttribute();
+    let newBits = currentBits;
+    for ( let i = 0; i < maxNumberOfSections; i++ ) {
+        const bit = 1 << (more ? i : maxNumberOfSections - i - 1);
+        if ( more ) {
+            newBits |= bit;
+        } else {
+            newBits &= ~bit;
+        }
+        newBits = newBits & offbits | onbits;
+        if ( newBits !== currentBits ) { break; }
+    }
+    if ( newBits === currentBits ) { return; }
+
+    setSections(newBits);
+
+    popupData.popupPanelSections = newBits;
+    messaging.send('popupPanel', {
+        what: 'userSettings',
+        name: 'popupPanelSections',
+        value: newBits,
+    });
+
+    // https://github.com/chrisaljoudi/uBlock/issues/996
+    //   Remember the last state of the firewall pane. This allows to
+    //   configure the popup size early next time it is opened, which means a
+    //   less glitchy popup at open time.
+    vAPI.localStorage.setItem('popupPanelSections', newBits);
+
+    // Dynamic filtering pane may not have been built yet
+    if ( (newBits & sectionFirewallBit) !== 0 && dfPaneBuilt === false ) {
+        buildAllFirewallRows();
+    }
+};
+
+dom.on('#moreButton', 'click', ( ) => { toggleSections(true); });
+dom.on('#lessButton', 'click', ( ) => { toggleSections(false); });
+
+/******************************************************************************/
+
+const mouseenterCellHandler = function(ev) {
+    const target = ev.target;
+    if ( dom.cl.has(target, 'ownRule') ) { return; }
+    target.appendChild(dfHotspots);
+};
+
+const mouseleaveCellHandler = function() {
+    dfHotspots.remove();
+};
+
+/******************************************************************************/
+
+const setFirewallRule = async function(src, des, type, action, persist) {
+    // This can happen on pages where uBlock does not work
+    if (
+        typeof popupData.pageHostname !== 'string' ||
+        popupData.pageHostname === ''
+    ) {
+        return;
+    }
+
+    const response = await messaging.send('popupPanel', {
+        what: 'toggleFirewallRule',
+        tabId: popupData.tabId,
+        pageHostname: popupData.pageHostname,
+        srcHostname: src,
+        desHostname: des,
+        requestType: type,
+        action: action,
+        persist: persist,
+    });
+
+    // Remove action widget if an own rule has been set, this allows to click
+    // again immediately to remove the rule.
+    if ( action !== 0 ) {
+        dfHotspots.remove();
+    }
+
+    cachePopupData(response);
+    updateAllFirewallCells(true, false);
+    hashFromPopupData();
+};
+
+/******************************************************************************/
+
+const unsetFirewallRuleHandler = function(ev) {
+    const cell = ev.target;
+    const row = cell.closest('[data-des]');
+    setFirewallRule(
+        dom.attr(cell, 'data-src') === '/' ? '*' : popupData.pageHostname,
+        dom.attr(row, 'data-des'),
+        dom.attr(row, 'data-type'),
+        0,
+        ev.ctrlKey || ev.metaKey
+    );
+    cell.appendChild(dfHotspots);
+};
+
+/******************************************************************************/
+
+const setFirewallRuleHandler = function(ev) {
+    const hotspot = ev.target;
+    const cell = hotspot.closest('[data-src]');
+    if ( cell === null ) { return; }
+    const row = cell.closest('[data-des]');
+    let action = 0;
+    if ( hotspot.id === 'dynaAllow' ) {
+        action = 2;
+    } else if ( hotspot.id === 'dynaNoop' ) {
+        action = 3;
+    } else {
+        action = 1;
+    }
+    setFirewallRule(
+        dom.attr(cell, 'data-src') === '/' ? '*' : popupData.pageHostname,
+        dom.attr(row, 'data-des'),
+        dom.attr(row, 'data-type'),
+        action,
+        ev.ctrlKey || ev.metaKey
+    );
+    dfHotspots.remove();
+};
+
+/******************************************************************************/
+
+const reloadTab = function(bypassCache = false) {
+    // Preemptively clear the unprocessed-requests status since we know for sure
+    // the page is being reloaded in this code path.
+    if ( popupData.hasUnprocessedRequest === true )  {
+        messaging.send('popupPanel', {
+            what: 'dismissUnprocessedRequest',
+            tabId: popupData.tabId,
+        }).then(( ) => {
+            popupData.hasUnprocessedRequest = false;
+            dom.cl.remove(dom.root, 'warn');
+        });
+    }
+
+    messaging.send('popupPanel', {
+        what: 'reloadTab',
+        tabId: popupData.tabId,
+        url: popupData.rawURL,
+        select: vAPI.webextFlavor.soup.has('mobile'),
+        bypassCache,
+    });
+
+    // Polling will take care of refreshing the popup content
+    // https://github.com/chrisaljoudi/uBlock/issues/748
+    //   User forces a reload, assume the popup has to be updated regardless
+    //   if there were changes or not.
+    popupData.contentLastModified = -1;
+
+    // Reset popup state hash to current state.
+    hashFromPopupData(true);
+};
+
+dom.on('#refresh', 'click', ev => {
+    reloadTab(ev.ctrlKey || ev.metaKey || ev.shiftKey);
+});
+
+// https://github.com/uBlockOrigin/uBlock-issues/issues/672
+dom.on(document, 'keydown', ev => {
+    if ( ev.isComposing ) { return; }
+    let bypassCache = false;
+    switch ( ev.key ) {
+        case 'F5':
+            bypassCache = ev.ctrlKey || ev.metaKey || ev.shiftKey;
+            break;
+        case 'r':
+            if ( (ev.ctrlKey || ev.metaKey) !== true ) { return; }
+            break;
+        case 'R':
+            if ( (ev.ctrlKey || ev.metaKey) !== true ) { return; }
+            bypassCache = true;
+            break;
+        default:
+            return;
+    }
+    reloadTab(bypassCache);
+    ev.preventDefault();
+    ev.stopPropagation();
+}, { capture: true });
+
+/******************************************************************************/
+
+const expandExceptions = new Set();
+
+vAPI.localStorage.getItemAsync('popupExpandExceptions').then(exceptions => {
+    try {
+        if ( Array.isArray(exceptions) === false ) { return; }
+        for ( const exception of exceptions ) {
+            expandExceptions.add(exception);
+        }
+    }
+    catch(ex) {
+    }
+});
+
+const saveExpandExceptions = function() {
+    vAPI.localStorage.setItem(
+        'popupExpandExceptions',
+        Array.from(expandExceptions)
+    );
+};
+
+const setGlobalExpand = function(state, internal = false) {
+    dom.cl.remove('.expandException', 'expandException');
+    if ( state ) {
+        dom.cl.add('#firewall', 'expanded');
+    } else {
+        dom.cl.remove('#firewall', 'expanded');
+    }
+    if ( internal ) { return; }
+    popupData.firewallPaneMinimized = !state;
+    expandExceptions.clear();
+    saveExpandExceptions();
+    messaging.send('popupPanel', {
+        what: 'userSettings',
+        name: 'firewallPaneMinimized',
+        value: popupData.firewallPaneMinimized,
+    });
+};
+
+const setSpecificExpand = function(domain, state, internal = false) {
+    const elems = qsa$(`[data-des="${domain}"],[data-des$=".${domain}"]`);
+    if ( state ) {
+        dom.cl.add(elems, 'expandException');
+    } else {
+        dom.cl.remove(elems, 'expandException');
+    }
+    if ( internal ) { return; }
+    if ( state ) {
+        expandExceptions.add(domain);
+    } else {
+        expandExceptions.delete(domain);
+    }
+    saveExpandExceptions();
+};
+
+dom.on('[data-i18n="popupAnyRulePrompt"]', 'click', ev => {
+    // Special display mode: in its own tab/window, with no vertical restraint.
+    // Useful to take snapshots of the whole list of domains -- example:
+    //   https://github.com/gorhill/uBlock/issues/736#issuecomment-178879944
+    if ( ev.shiftKey && ev.ctrlKey ) {
+        messaging.send('popupPanel', {
+            what: 'gotoURL',
+            details: {
+                url: `popup-fenix.html?tabId=${popupData.tabId}&intab=1`,
+                select: true,
+                index: -1,
+            },
+        });
+        vAPI.closePopup();
+        return;
+    }
+
+    setGlobalExpand(dom.cl.has('#firewall', 'expanded') === false);
+});
+
+dom.on('#firewall', 'click', '.isDomain[data-type="*"] > span:first-of-type', ev => {
+    const div = ev.target.closest('[data-des]');
+    if ( div === null ) { return; }
+    setSpecificExpand(
+        dom.attr(div, 'data-des'),
+        dom.cl.has(div, 'expandException') === false
+    );
+});
+
+/******************************************************************************/
+
+const saveFirewallRules = function() {
+    messaging.send('popupPanel', {
+        what: 'saveFirewallRules',
+        srcHostname: popupData.pageHostname,
+        desHostnames: popupData.hostnameDict,
+    });
+    dom.cl.remove(dom.body, 'needSave');
+};
+
+/******************************************************************************/
+
+const revertFirewallRules = async function() {
+    dom.cl.remove(dom.body, 'needSave');
+    const response = await messaging.send('popupPanel', {
+        what: 'revertFirewallRules',
+        srcHostname: popupData.pageHostname,
+        desHostnames: popupData.hostnameDict,
+        tabId: popupData.tabId,
+    });
+    cachePopupData(response);
+    updateAllFirewallCells(true, false);
+    updateHnSwitches();
+    hashFromPopupData();
+};
+
+/******************************************************************************/
+
+const toggleHostnameSwitch = async function(ev) {
+    const target = ev.currentTarget;
+    const switchName = dom.attr(target, 'id');
+    if ( !switchName ) { return; }
+    // For touch displays, process click only if the switch is not "busy".
+    if (
+        vAPI.webextFlavor.soup.has('mobile') &&
+        dom.cl.has(target, 'hnSwitchBusy')
+    ) {
+        return;
+    }
+    dom.cl.toggle(target, 'on');
+    renderTooltips(`#${switchName}`);
+
+    const response = await messaging.send('popupPanel', {
+        what: 'toggleHostnameSwitch',
+        name: switchName,
+        hostname: popupData.pageHostname,
+        state: dom.cl.has(target, 'on'),
+        tabId: popupData.tabId,
+        persist: ev.ctrlKey || ev.metaKey,
+    });
+
+    cachePopupData(response);
+    hashFromPopupData();
+
+    dom.cl.toggle(dom.body, 'needSave', popupData.matrixIsDirty === true);
+};
+
+/*******************************************************************************
+
+    Double tap ctrl key: toggle god mode
+
+*/
+
+// https://github.com/uBlockOrigin/uBlock-issues/issues/2145
+//   Ignore events from auto-repeating keys
+
+{
+    let eventCount = 0;
+    let eventTime = 0;
+
+    dom.on(document, 'keydown', ev => {
+        if ( ev.key !== 'Control' ) {
+            eventCount = 0;
+            return;
+        }
+        if ( ev.repeat ) { return; }
+        const now = Date.now();
+        if ( (now - eventTime) >= 500 ) {
+            eventCount = 0;
+        }
+        eventCount += 1;
+        eventTime = now;
+        if ( eventCount < 2 ) { return; }
+        eventCount = 0;
+        dom.cl.toggle(dom.body, 'godMode');
+    });
+}
+
+
+/******************************************************************************/
+
+// Poll for changes.
+//
+// I couldn't find a better way to be notified of changes which can affect
+// popup content, as the messaging API doesn't support firing events accurately
+// from the main extension process to a specific auxiliary extension process:
+//
+// - broadcasting() is not an option given there could be a lot of tabs opened,
+//   and maybe even many frames within these tabs, i.e. unacceptable overhead
+//   regardless of whether the popup is opened or not.
+//
+// - Modifying the messaging API is not an option, as this would require
+//   revisiting all platform-specific code to support targeted broadcasting,
+//   which who knows could be not so trivial for some platforms.
+//
+// A well done polling is a better anyways IMO, I prefer that data is pulled
+// on demand rather than forcing the main process to assume a client may need
+// it and thus having to push it all the time unconditionally.
+
+const pollForContentChange = (( ) => {
+    const pollCallback = async function() {
+        const response = await messaging.send('popupPanel', {
+            what: 'hasPopupContentChanged',
+            tabId: popupData.tabId,
+            contentLastModified: popupData.contentLastModified,
+        });
+        if ( response ) {
+            await getPopupData(popupData.tabId);
+            return;
+        }
+        poll();
+    };
+
+    const pollTimer = vAPI.defer.create(pollCallback);
+
+    const poll = function() {
+        pollTimer.on(1500);
+    };
+
+    return poll;
+})();
+
+/******************************************************************************/
+
+const getPopupData = async function(tabId, first = false) {
+    const response = await messaging.send('popupPanel', {
+        what: 'getPopupData',
+        tabId,
+    });
+
+    cachePopupData(response);
+    renderOnce();
+    renderPopup();
+    renderPopupLazy(); // low priority rendering
+    hashFromPopupData(first);
+    pollForContentChange();
+};
+
+/******************************************************************************/
+
+// Popup DOM is assumed to be loaded at this point -- because this script
+// is loaded after everything else.
+
+{
+    // Extract the tab id of the page for this popup. If there's no tab id
+    // specified in the query string, it will default to current tab.
+    const selfURL = new URL(self.location.href);
+    const tabId = parseInt(selfURL.searchParams.get('tabId'), 10) || null;
+
+    const nextFrames = async n => {
+        for ( let i = 0; i < n; i++ ) {
+            await new Promise(resolve => {
+                self.requestAnimationFrame(( ) => { resolve(); });
+            });
+        }
+    };
+
+    // The purpose of the following code is to reset to a vertical layout
+    // should the viewport not be enough wide to accommodate the horizontal
+    // layout.
+    // To avoid querying a spurious viewport width -- it happens sometimes,
+    // somehow -- we delay layout-changing operations to the next paint
+    // frames.
+    // Force a layout recalculation by querying the body width. To be
+    // honest, I have no clue if this makes a difference in the end.
+    //   https://gist.github.com/paulirish/5d52fb081b3570c81e3a
+    // Use a tolerance proportional to the sum of the width of the panes
+    // when testing against viewport width.
+    const checkViewport = async function() {
+        if (
+            dom.cl.has(dom.root, 'mobile') ||
+            selfURL.searchParams.get('portrait')
+        ) {
+            dom.cl.add(dom.root, 'portrait');
+            dom.cl.remove(dom.root, 'desktop');
+        } else if ( dom.cl.has(dom.root, 'desktop') ) {
+            await nextFrames(8);
+            const main = qs$('#main');
+            const firewall = qs$('#firewall');
+            const minWidth = (main.offsetWidth + firewall.offsetWidth) / 1.1;
+            if (
+                selfURL.searchParams.get('portrait') ||
+                window.innerWidth < minWidth
+            ) {
+                dom.cl.add(dom.root, 'portrait');
+            }
+        }
+        if ( dom.cl.has(dom.root, 'portrait') ) {
+            const panes = qs$('#panes');
+            const sticky = qs$('#sticky');
+            const stickyParent = sticky.parentElement;
+            if ( stickyParent !== panes ) {
+                panes.prepend(sticky);
+            }
+        }
+        if ( selfURL.searchParams.get('intab') !== null ) {
+            dom.cl.add(dom.root, 'intab');
+        }
+        await nextFrames(1);
+        dom.cl.remove(dom.body, 'loading');
+    };
+
+    getPopupData(tabId, true).then(( ) => {
+        if ( document.readyState !== 'complete' ) {
+            dom.on(self, 'load', ( ) => { checkViewport(); }, { once: true });
+        } else {
+            checkViewport();
+        }
+    });
+}
+
+/******************************************************************************/
+
+dom.on('#switch', 'click', toggleNetFilteringSwitch);
+dom.on('#gotoZap', 'click', gotoZap);
+dom.on('#gotoPick', 'click', gotoPick);
+dom.on('#gotoReport', 'click', gotoReport);
+dom.on('.hnSwitch', 'click', ev => { toggleHostnameSwitch(ev); });
+dom.on('#saveRules', 'click', saveFirewallRules);
+dom.on('#revertRules', 'click', ( ) => { revertFirewallRules(); });
+dom.on('a[href]', 'click', gotoURL);
+
+/******************************************************************************/