Skin is a launch-time choice; stop applying it to a live window

Switching Modern -> Win7 at runtime broke the UI. SettingsService.applySkin
toggled the `.win7` class the moment the setting changed — harmless when there
was one component tree, and a broken window as soon as there were two. The tree
is bootstrapped once from the preload-baked __APP_SKIN, so the live flip painted
7.css onto shadlike markup that has no .window.glass, no .title-bar, no
menu[role=tablist] and no <table> ListView. The CSS landed on a tree that cannot
receive it.

A reload would not have helped, and neither would anything short of a restart:

- The preload is a persistent WebKitUserScript injected at DOCUMENT_START, so
  its string is frozen at webview construction — loadURL() re-runs it with the
  OLD __APP_SKIN. updatePreloadScriptToWebView exists in the FFI but is
  reachable only from electrobun's internal <electrobun-webview> handler.
- titleBarStyle/transparent have no setters; a live window cannot be re-framed.
  win7 -> modern is the dangerous direction — the modern tree draws no title
  bar, so it would land in a frameless transparent window with no way to move,
  minimize or close it.
- Recreating the main window is also out: exitOnLastWindowClosed is true, the
  main rpc is captured by six push closures, the tray captures `win`, and
  listeners cannot be removed.

So: applySkin is deleted outright, from setSkin AND from applyAll — the latter
matters independently, since applyAll runs on the settingsChanged push and was
therefore breaking every open editor and manager window too. Clicking a skin now
only persists it.

Also fixed a second leak found while tracing this: manager-window and
editor-windows build from `currentSettings()`, the LIVE snapshot, so a window
opened after a pending change would boot the new tree and frame while main still
ran the old one. `initSessionSkin` now freezes the skin at startup before any
window exists, and buildPreload/chromeOptions read that pinned value —
chromeOptions loses its parameter so no call site can get it wrong.

The options row shows the saved value as pending (skinPending() compares
settings.skin() against APP_SKIN) with the hint retexted in all 7 locales; it
said "Reopen the window to change its frame", which described the deleted
design.

Verified: tsc + build:ui clean; both skins boot correctly from a persisted
setting (win7 frameless, modern with the native frame). The live flip is now
impossible by construction, which is the check that matters here — the UI bundle
contains no classList write for win7 at all, the only writer is buildPreload,
and sessionSkin has exactly one assignment site.

Not verified: the click itself and the pending hint appearing, which need an
interaction pass — no window automation is available here. Both are present in
the built bundle.

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
2026-08-16 14:56:16 +02:00
co-authored by Claude
parent 5bbfc2f475
commit c8ccc6b918
15 changed files with 168 additions and 63 deletions
+3 -2
View File
@@ -1,6 +1,7 @@
/* The SCOPED 7.css build: postcss-prefix-selector rewrote every selector to
`.win7` (root rules) or `.win7 <sel>` (the rest), so the whole framework is
inert until SettingsService.applySkin puts that class on <html>. All 61
inert until the `.win7` class is on <html> — written once by buildPreload
for the skin this window booted, and never changed after. All 61
icons are data URIs, so nothing needs copying into assets — and NOT the
`7.inline.css` build, which flattens away the --w7-* vars the dark palette
below depends on. The deep path is required: 7.css ships no `exports` map
@@ -9,7 +10,7 @@
@import "7.css/dist/7.scoped.css" layer(skin);
/* ==========================================================================
Windows 7 skin — SettingsService.applySkin puts `.win7` on <html>
Windows 7 skin — buildPreload puts `.win7` on <html> at first paint
==========================================================================
Three tiers, and the split matters:
+20 -6
View File
@@ -1,11 +1,11 @@
import { Component, ElementRef, effect, inject, signal, viewChild } from '@angular/core';
import { Component, ElementRef, computed, effect, inject, signal, viewChild } from '@angular/core';
import { NgIcon } from '@ng-icons/core';
import { BRANDING } from '@shared/branding';
import { LOCALE_LABELS, SUPPORTED } from '@shared/i18n';
import type { AccentTone } from '@shared/types';
import { I18nService } from '@core/i18n.service';
import { PanelsService } from '@core/panels.service';
import { MOD_LABEL } from '@core/platform';
import { APP_SKIN, MOD_LABEL } from '@core/platform';
import { RpcService } from '@core/rpc.service';
import { SettingsService } from '@core/settings.service';
import { UpdaterService } from '@core/updater.service';
@@ -175,10 +175,13 @@ const CONCURRENCY_CHOICES = [2, 3, 4, 6, 8] as const;
</select>
</div>
<!-- Skin: swaps the WHOLE component tree (ui/src/app/skins/) plus the
native frame. Only the CSS half applies live — titleBarStyle and
transparent are BrowserWindow constructor options and main.ts
reads the preload-baked __APP_SKIN — so the hint is not optional. -->
<!-- Skin: a LAUNCH-TIME choice. It swaps the whole component tree
(ui/src/app/skins/) and the native frame, and neither can change
on a live window — the tree is bootstrapped from the preload-baked
__APP_SKIN and titleBarStyle/transparent are BrowserWindow
constructor options. Clicking only saves; the running UI is left
alone. Highlight the SAVED value so the click registers, and show
the pending hint whenever it differs from the booted skin. -->
<div class="mt-2.5 flex items-center justify-between gap-2">
<span class="text-xs text-muted-foreground">{{ i18n.t('options.skin.label') }}</span>
<div class="flex rounded-md border border-border p-0.5">
@@ -196,6 +199,11 @@ const CONCURRENCY_CHOICES = [2, 3, 4, 6, 8] as const;
}
</div>
</div>
@if (skinPending()) {
<p class="mt-1 text-right text-[10px] text-muted-foreground">
{{ i18n.t('options.skin.restartHint') }}
</p>
}
<div class="mt-2.5 flex items-center justify-between gap-2">
<span class="text-xs text-muted-foreground">{{ i18n.t('options.theme.label') }}</span>
@@ -455,6 +463,12 @@ export class TabBar {
/** What the window was BUILT with, not the current setting — the frameless
* chrome only changes on reopen, so the hint compares against this. */
readonly skins = SKINS;
/**
* The saved skin differs from the one this window actually booted, so the
* choice is waiting on a restart. APP_SKIN is the preload-baked value that
* picked the running component tree; settings.skin() is merely persisted.
*/
readonly skinPending = computed(() => this.settings.skin() !== APP_SKIN);
readonly themes = THEMES;
readonly darkTones = DARK_TONES;
readonly accents = ACCENTS;