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Each category is a native <details>, closed at first, with an 'n selected' count; a preset opens what it ticks. A sticky memory bar (0-64 GB, marks 8/16/24/32/48/64+): solid fill = smallest box memory where the selection fits well, thin mark = where it fits, but tight; one line names the box to buy. minBoxGb() inverts guestMib() by bisection on it, so the rule is still written once. Box sizes 12/24/48/64 added; tests cover seven sizes and the inverse (red-proofed); SIZING.md table gains 24 GB.
247 lines
12 KiB
JavaScript
247 lines
12 KiB
JavaScript
/* sizing.js — the machine estimator (/gepigeny, /en/sizing).
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*
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* THE RULE lives in guestMib(), minBoxGb() and estimate() below, and nowhere else on the site. Every number it
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* uses comes from /assets/sizing-data.json (built by scripts/build_sizing_web.py from the 2026-10-13 N100
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* measurement); this file holds none of its own — scripts/test_build_sizing_web.py checks that.
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*
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* typical = platform + sum of the selected apps' typical figures
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* peak = platform + sum of their peaks (all at peak at once: pessimistic on purpose)
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* per box size: guest memory by the installer's rule (guestMib), then
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* well peak * headroom <= guest
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* tight peak <= guest < peak * headroom
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* no guest < peak
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* the memory bar: minBoxGb() inverts guestMib() by SEARCHING it — the smallest box memory whose guest
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* holds peak * headroom (solid fill) and peak (thin marker). It never restates the installer's rule.
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*
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* The page text is not here: each page carries its own strings (#sizer-strings), so this file is the
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* same for both languages.
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*/
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(function (root) {
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'use strict';
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function guestMib(data, gb) {
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var r = data.guest_rule;
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var total = gb * 1024 - r.memtotal_shortfall_mib;
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var mem = total - r.reserve_mib;
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if (mem > total - r.max_gap_mib) { mem = total - r.max_gap_mib; }
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if (mem < r.min_mib) { mem = r.min_mib; }
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if (mem > total - r.ceiling_gap_mib) { mem = total - r.ceiling_gap_mib; }
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return mem;
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}
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// The smallest box memory (GB, not rounded to a product size) whose guest holds needMib. guestMib() never
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// decreases as the box grows, so a bisection on it is exact to 1 MiB; it uses the forward rule only.
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function minBoxGb(data, needMib) {
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var lo = 0, hi = 1;
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while (guestMib(data, hi) < needMib) { hi = hi * 2; }
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while (hi - lo > 1 / 1024) {
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var mid = (lo + hi) / 2;
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if (guestMib(data, mid) >= needMib) { hi = mid; } else { lo = mid; }
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}
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return hi;
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}
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function estimate(data, slugs) {
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var bySlug = {};
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data.apps.forEach(function (a) { bySlug[a.slug] = a; });
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var typical = data.platform_mb, peak = data.platform_mb, busy = [], unmeasured = [];
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slugs.forEach(function (s) {
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var a = bySlug[s];
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if (!a || a.builtin) { return; }
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typical += a.typical_mb;
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peak += a.peak_mb;
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if (a.cpu_class === 'medium' || a.cpu_class === 'heavy-in-bursts') { busy.push(a); }
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if (!a.measured) { unmeasured.push(a); }
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});
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var boxes = data.boxes_gb.map(function (gb) {
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var guest = guestMib(data, gb);
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var verdict = peak * data.headroom <= guest ? 'well' : (peak <= guest ? 'tight' : 'no');
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return { gb: gb, guest_mb: guest, verdict: verdict };
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});
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var recommend = null, tightBox = null;
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boxes.forEach(function (b) {
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if (recommend === null && b.verdict === 'well') { recommend = b.gb; }
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if (tightBox === null && b.verdict === 'tight') { tightBox = b.gb; }
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});
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var heavy = busy.filter(function (a) { return a.cpu_class === 'heavy-in-bursts'; });
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return {
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typical_mb: typical, peak_mb: peak, boxes: boxes, busy: busy, heavy: heavy, unmeasured: unmeasured,
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well_gb: minBoxGb(data, peak * data.headroom), tight_gb: minBoxGb(data, peak),
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recommend_gb: recommend, tight_box_gb: tightBox
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};
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}
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root.FelhomSizing = { estimate: estimate, guestMib: guestMib, minBoxGb: minBoxGb };
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/* ---------------------------------------------------------------- the page (drawing only) */
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if (typeof document === 'undefined') { return; }
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function el(tag, cls, txt) {
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var e = document.createElement(tag);
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if (cls) { e.className = cls; }
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if (txt !== undefined) { e.textContent = txt; }
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return e;
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}
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function icon(name, cls) {
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var ns = 'http://www.w3.org/2000/svg';
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var s = document.createElementNS(ns, 'svg');
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s.setAttribute('class', cls || 'ico');
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s.setAttribute('aria-hidden', 'true');
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var u = document.createElementNS(ns, 'use');
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u.setAttribute('href', '/assets/icons.svg?v=1#' + name);
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s.appendChild(u);
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return s;
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}
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function start() {
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var host = document.getElementById('sizer');
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var strEl = document.getElementById('sizer-strings');
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if (!host || !strEl) { return; }
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var T = JSON.parse(strEl.textContent);
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var lang = document.documentElement.lang === 'en' ? 'en' : 'hu';
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var dec = function (v) { var s = v.toFixed(1); return lang === 'hu' ? s.replace('.', ',') : s; };
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var gbText = function (mb) { return dec(mb / 1024) + ' GB'; };
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var appsBox = document.getElementById('sizer-apps');
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var meter = document.getElementById('sizer-meter');
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var line = document.getElementById('sizer-line');
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var result = document.getElementById('sizer-result');
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fetch(host.getAttribute('data-src')).then(function (r) { return r.json(); }).then(function (data) {
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var max = data.bar_max_gb;
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meter.setAttribute('aria-valuemax', String(max));
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var groups = [];
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// the bar's marks: positions from the data, the last one reads "64+"
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var scale = document.getElementById('sizer-scale');
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data.bar_marks_gb.forEach(function (gb, i) {
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var m = el('span', 'sizer-mark', gb + (i === data.bar_marks_gb.length - 1 ? '+' : '') + ' GB');
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m.style.left = (gb / max * 100) + '%';
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scale.appendChild(m);
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});
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// one fold-out per category, all closed at first
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data.categories.forEach(function (c) {
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var d = el('details', 'sizer-cat');
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var sum = el('summary', 'sizer-cat-head');
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sum.appendChild(el('span', 'sizer-cat-name', lang === 'en' ? c.name_en : c.name_hu));
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var count = el('span', 'sizer-cat-count');
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sum.appendChild(count);
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sum.appendChild(icon('i-chevron-down', 'ico sizer-chevron'));
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d.appendChild(sum);
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var body = el('div', 'sizer-cat-body');
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data.apps.filter(function (a) { return a.category === c.id; }).forEach(function (a) {
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var lab = el('label', 'sizer-app');
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var cb = el('input');
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cb.type = 'checkbox';
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cb.value = a.slug;
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if (a.builtin) { cb.checked = true; cb.disabled = true; }
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lab.appendChild(cb);
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lab.appendChild(el('span', 'sizer-app-name', lang === 'en' ? a.name_en : a.name_hu));
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var tag = a.builtin ? T.builtin : (lang === 'en' ? a.tagline_en : a.tagline_hu);
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if (tag) { lab.appendChild(el('span', 'sizer-app-tag', tag)); }
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body.appendChild(lab);
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});
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d.appendChild(body);
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appsBox.appendChild(d);
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groups.push({ details: d, count: count });
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});
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function selected() {
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return Array.prototype.map.call(appsBox.querySelectorAll('input[type=checkbox]:checked:not(:disabled)'),
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function (c) { return c.value; });
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}
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function draw() {
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var r = estimate(data, selected());
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groups.forEach(function (g) {
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var n = g.details.querySelectorAll('input[type=checkbox]:checked:not(:disabled)').length;
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g.count.textContent = n ? T.selected.replace('{n}', n) : '';
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});
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// the bar: solid fill = fits well, thin marker = fits, but tight
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var wellPct = Math.min(r.well_gb / max, 1) * 100;
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var tightPct = Math.min(r.tight_gb / max, 1) * 100;
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document.getElementById('sizer-fill').style.width = wellPct + '%';
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document.getElementById('sizer-tight').style.left = tightPct + '%';
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var over = r.well_gb > max;
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var needText = over ? T.over_max.replace('{gb}', max) : dec(r.well_gb) + ' GB';
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meter.setAttribute('aria-valuenow', String(Math.min(r.well_gb, max).toFixed(1)));
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meter.setAttribute('aria-valuetext', T.meter_text.replace('{x}', needText));
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// one line: which box to buy, and where it is tight
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var biggest = data.boxes_gb[data.boxes_gb.length - 1];
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if (r.recommend_gb !== null) {
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line.textContent = T.recommend.replace('{gb}', r.recommend_gb) +
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(r.tight_box_gb !== null ? ' ' + T.tight_on.replace('{gb}', r.tight_box_gb) : '');
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} else if (r.tight_box_gb !== null) {
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line.textContent = T.only_tight.replace('{gb}', r.tight_box_gb);
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} else {
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line.textContent = T.none_fits.replace('{gb}', biggest);
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}
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// under the bar: totals, why tight is tight, the CPU lines
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result.textContent = '';
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var totals = el('p', 'sizer-totals');
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totals.appendChild(el('span', '', T.typical + ': '));
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totals.appendChild(el('strong', 'sizer-num', gbText(r.typical_mb)));
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totals.appendChild(el('span', '', ' · ' + T.peak + ': '));
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totals.appendChild(el('strong', 'sizer-num', gbText(r.peak_mb)));
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result.appendChild(totals);
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result.appendChild(el('p', 'sizer-fine', T.platform_note));
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if (r.tight_box_gb !== null) { result.appendChild(el('p', 'sizer-why', T.tight_why)); }
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if (r.busy.length) {
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result.appendChild(el('h3', 'sizer-sub', T.cpu_head));
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var cl = el('ul', 'sizer-cpu');
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r.busy.forEach(function (a) {
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var li = el('li');
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li.appendChild(el('strong', '', (lang === 'en' ? a.name_en : a.name_hu) + ': '));
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li.appendChild(el('span', '', lang === 'en' ? a.cpu_note_en : a.cpu_note_hu));
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cl.appendChild(li);
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});
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if (r.heavy.length >= 2) {
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cl.appendChild(el('li', 'sizer-pair', T.heavy_pair.replace('{names}', r.heavy.map(function (a) {
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return lang === 'en' ? a.name_en : a.name_hu;
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}).join(T.and))));
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}
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result.appendChild(cl);
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}
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if (r.unmeasured.length) {
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result.appendChild(el('p', 'sizer-why', T.unmeasured + ': ' + r.unmeasured.map(function (a) {
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return lang === 'en' ? a.name_en : a.name_hu;
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}).join(', ')));
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}
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}
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appsBox.addEventListener('change', draw);
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Array.prototype.forEach.call(document.querySelectorAll('[data-preset]'), function (btn) {
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btn.addEventListener('click', function () {
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var want = (btn.getAttribute('data-preset') || '').split(',').filter(Boolean);
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groups.forEach(function (g) {
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var any = false;
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Array.prototype.forEach.call(g.details.querySelectorAll('input[type=checkbox]:not(:disabled)'), function (c) {
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c.checked = want.indexOf(c.value) !== -1;
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if (c.checked) { any = true; }
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});
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if (any) { g.details.open = true; }
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});
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draw();
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});
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});
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host.hidden = false;
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draw();
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}).catch(function () {
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line.textContent = T.load_error;
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host.hidden = false;
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});
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}
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', start);
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} else {
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start();
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}
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})(this);
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