mgbrowser v0.9.28 Experimental Preview

mgbrowser v0.9.28 Experimental Preview

Interactive HTML forms and standalone controls, arbitrary element click/focus
activation, Stylo CSS3 DOM selectors (querySelector / querySelectorAll /
matches / closest), modern DOM mutation and Event APIs (DocumentFragment,
DOMParser, outerHTML, insertAdjacentHTML, { capture, once, passive, signal }, CustomEvent), Web Platform globals (URL, URLSearchParams,
TextEncoder/TextDecoder, atob/btoa, ChaCha20 CSPRNG
crypto.getRandomValues/randomUUID, performance.now, setInterval,
requestAnimationFrame, queueMicrotask, structuredClone, matchMedia),
live layout/style queries (getComputedStyle, getBoundingClientRect,
scrollTo), localStorage/sessionStorage, document.cookie (HttpOnly
isolated), history.pushState/replaceState/popstate, and parent-brokered
same-origin fetch() / XMLHttpRequest over the seccomp-confined VERSION = 9
page worker session. Exact-source publication and public-install receipts are
recorded in the dated work log.

Linux x86_64 / X11 or XWayland, glibc 2.35 or newer. Rust 1.91.1, locked
dependencies, Apache-2.0 license, and pure-Rust implementation backends (zero
new crate dependencies).

HTML Forms, Interactive Controls & Modern Web Platform APIs (v0.9.28)

• HTML Forms, Standalone Controls & Arbitrary Element Clicks (mg-sparkle, mg-chassis):
  • Projects standalone controls outside <form> alongside form-associated
    controls (checkbox, radio groups, <select>/<option>/<optgroup> with
    native dropdown popup overlay, <button type="button"|"reset"|"submit">,
    <textarea>, <label> for + descendant forwarding, <details>/<summary>,
    <dialog> show/showModal/close/returnValue, form.elements/submit/
    reset/requestSubmit, and <div onclick> arbitrary element activation).
• Modern DOM & CSS3 Selector APIs (crates/mg-sparkle/src/js_browser/boa/):
  • Stylo CSS3 querySelector, querySelectorAll, matches, closest,
    CSS.supports, and CSS.escape; DocumentFragment, DOMParser,
    <template>.content, cloneNode, insertBefore/replaceChild/remove/
    before/after/replaceWith/prepend/append/replaceChildren,
    outerHTML, and insertAdjacentHTML/Element/Text; { capture, once, passive, signal } listener options, AbortController/AbortSignal,
    Event/CustomEvent/MouseEvent/KeyboardEvent/FocusEvent/
    PopStateEvent/HashChangeEvent, dispatchEvent, click()/focus()/blur(),
    and document.activeElement.
• Web Globals, Live Layout/Style Queries, Storage, History & fetch/XHR:
  • URL, URLSearchParams, TextEncoder/TextDecoder, atob/btoa,
    parent-seeded ChaCha20 crypto.getRandomValues & crypto.randomUUID,
    performance.now/User Timing, setInterval, requestAnimationFrame,
    queueMicrotask, cyclic structuredClone, and Stylo window.matchMedia.
  • Live window.getComputedStyle, pixel-free compute_boxes-backed
    getBoundingClientRect / getClientRects / offset* / client* / scroll*,
    and scrollTo/scrollBy/scrollIntoView.
  • Per-origin localStorage and per-tab sessionStorage, HttpOnly-isolated
    document.cookie, same-document history.pushState/replaceState/back/
    forward/go (popstate + hashchange), and parent-brokered same-origin
    Headers/Request/Response/fetch() and XMLHttpRequest over the
    seccomp-confined VERSION = 9 worker protocol (zero worker network or
    filesystem syscalls).
• Measured WPT Coverage:
  • Static flexbox reftest lane advances to 532 PASS / 417 FAIL / 62
    UNSUPPORTED of 1,011 (+4 new scripted/form flexbox passes over v0.9.27,
    zero losses; expectations.json ratcheted to protect all 532 passes).
  • Separate real-Browser Window lane retains 16 / 16 files and 79 / 79 final
    subtests (100%).