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OpenStation: Desktop Windows, Dock & Virtual Desktops for WP Admin / 1.1.11
OpenStation: Desktop Windows, Dock & Virtual Desktops for WP Admin v1.1.11
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desktop-mode / includes / render / assets.php

assets.php in OpenStation: Desktop Windows, Dock & Virtual Desktops for WP Admin 1.1.11, at includes/render/assets.php

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1 <?php
2 /**
3 * OpenStation — Asset enqueue.
4 *
5 * Loads the desktop shell CSS + JS bundles when OpenStation is
6 * active and the request isn't chromeless / classic-overridden.
7 * Owns the entire `openstation_enqueue_assets()` body — the
8 * largest hook in the original render.php and the natural seam
9 * for "what does the shell ship to the browser today?".
10 *
11 * Extracted from `render.php` during the architecture-0.8.1 PHP
12 * slicing (phase 6).
13 *
14 * @package OpenStation
15 */
16
17 defined( 'ABSPATH' ) || exit;
18
19 /**
20 * Enqueues the OpenStation shell assets (CSS + JS) when OpenStation is active.
21 *
22 * Only loads the full desktop shell scripts and styles when the user has
23 * OpenStation enabled and the request is not a chromeless iframe load.
24 */
25 function openstation_enqueue_assets() {
26 if ( ! is_admin() ) {
27 return;
28 }
29
30 // Auto-enqueue the iframe bridge anywhere a openstation user
31 // might land. The bundle self-bails when not inside an iframe
32 // (`window.parent === window`), so it's a no-op on the parent
33 // shell — but cheap insurance against the failure mode the
34 // developer hit: an internal admin navigation drops the
35 // `?openstation_chromeless=1` flag, the chromeless inline bridge doesn't
36 // run, and `wp.os.iframe` silently disappears. With this
37 // auto-enqueue, the API is universally present for any same-
38 // origin admin page a openstation user opens — chromeless or
39 // accidentally classic.
40 if ( openstation_is_enabled() ) {
41 wp_enqueue_script( 'os-iframe-bridge' );
42
43 // Block Editor cross-window drop receiver. Listens for
44 // `os-drop` postMessages from the parent shell and
45 // inserts the matching block. Only enqueue inside the
46 // post-edit Block Editor screens — every other admin page
47 // would be paying for a bundle it never uses.
48 //
49 // `site-editor.php` (full-site editor) deliberately omitted:
50 // the FSE doesn't expose `wp.data.dispatch('core/block-editor')`
51 // until the user opens a template in the canvas iframe, so
52 // drops arriving before that point would silently time out
53 // after the receiver's 5 s `waitForEditor()` poll. Re-enable
54 // once we have a reliable readiness signal in that context.
55 global $hook_suffix;
56 if ( 'post.php' === $hook_suffix || 'post-new.php' === $hook_suffix ) {
57 wp_enqueue_script( 'os-gutenberg-drop-receiver' );
58 }
59 }
60
61 // Chromeless requests (iframes) need chromeless styles and overrides.
62 if ( openstation_is_chromeless_request() ) {
63 wp_enqueue_style( 'openstation' );
64 wp_enqueue_style( 'os-chromeless' );
65
66 /**
67 * Fires when chromeless styles are enqueued inside a OpenStation iframe.
68 *
69 * Plugin and theme authors can hook here to enqueue their own CSS
70 * overrides for legacy pages rendered in chromeless mode. Use the
71 * `.os-chromeless` body class to scope your rules.
72 */
73 do_action( 'openstation_chromeless_styles' );
74 return;
75 }
76
77 if ( ! openstation_is_shell_request() ) {
78 return;
79 }
80
81 // CSS. Only the sheets that paint surfaces present at boot — the
82 // shell chrome, the dock, desktop tiles and pinned notes. Sheets
83 // for on-demand surfaces (Preferences panel, AI assistant, bug
84 // report) ship as `deferredStyles` in the config blob below and
85 // inject on first open; a native window's sheet rides its
86 // registration's `styles` companion list the same way.
87 wp_enqueue_style( 'openstation' );
88 wp_enqueue_style( 'os-windows' );
89 wp_enqueue_style( 'os-window-overview' );
90 wp_enqueue_style( 'os-dock' );
91 wp_enqueue_style( 'os-dock-peek' );
92 wp_enqueue_style( 'os-notch' );
93 wp_enqueue_style( 'os-workspaces' );
94 wp_enqueue_style( 'os-shortcuts' );
95 wp_enqueue_style( 'os-openstation-layout' );
96 wp_enqueue_style( 'os-files' );
97 wp_enqueue_style( 'os-notes' );
98 // Unconditional like the layout sheet: a live crossing into the
99 // phone band must not find the phone layer unstyled.
100 wp_enqueue_style( 'os-mobile' );
101
102 // Solo mode — a single window freed into a native OS window by the
103 // desktop host. Same shell, everything but that one window hidden.
104 $solo_window = openstation_solo_window_id();
105 if ( '' !== $solo_window ) {
106 wp_enqueue_style( 'os-solo' );
107
108 /*
109 * Hide every window that is not the one this surface was booted
110 * to paint — from the first frame, before any of them exist.
111 *
112 * Solo mode promises one window. Anything that opens a second
113 * (a game launched from a freed Games hub, a plugin calling
114 * `openWindow`) would otherwise land on top of the first, and
115 * solo's CSS stretches every window to fill the viewport, so it
116 * covers what the user was using.
117 *
118 * This has to be CSS rather than JavaScript, and it has to be
119 * inline. A JS rule can only run once the window exists, which
120 * is a frame too late — the user sees the newcomer flash before
121 * it is dealt with. A static stylesheet cannot express it
122 * either, because the selector depends on which window this is.
123 * So the rule is emitted with the id baked in, and no window but
124 * that one is ever painted.
125 *
126 * `visibility` rather than `display`: a hidden-but-laid-out
127 * window still has a size, which canvas-based windows need in
128 * order to initialise without dividing by zero on the way to
129 * being closed.
130 *
131 * The id is `sanitize_key()`-clean (see `openstation_solo_window_id()`),
132 * so it is safe in a selector; it is escaped again here because
133 * the distance between those two facts is exactly where this
134 * kind of bug lives.
135 */
136 wp_add_inline_style(
137 'os-solo',
138 sprintf(
139 'body.os-solo .os-window:not(#wp-window-%1$s){visibility:hidden !important;pointer-events:none !important;}',
140 esc_attr( $solo_window )
141 )
142 );
143 }
144
145 // The rebrand announcement paints on one visit per user and never
146 // again, so its stylesheet is only worth sending to the users who
147 // are actually going to see it. Computed once here and reused for
148 // the `rebrandNotice` config key below, which reads the same answer.
149 $show_rebrand_notice = openstation_should_show_rebrand_notice();
150 if ( $show_rebrand_notice ) {
151 wp_enqueue_style( 'os-announce' );
152 }
153
154 // JS.
155 wp_enqueue_script( 'openstation' );
156
157 // `wp_enqueue_command_palette_assets()` (WP 6.9+) enqueues the
158 // `wp-commands` store package, the `wp-core-commands` script that
159 // registers the WordPress-wide baseline (Add new post, Manage
160 // plugins, Switch theme, Browse patterns, …) AND — critically —
161 // the inline `wp.coreCommands.initializeCommandPalette( … )` call
162 // that actually populates the `core/commands` data store with the
163 // admin-menu commands. Without that inline init, the script loads
164 // but the store stays empty and `src/commands/shell-harvester.ts`
165 // finds nothing to publish.
166 //
167 // WP normally only calls this on screens that opt in to the native
168 // palette; the shell needs it on every admin URL it might wrap.
169 // `function_exists` guard for pre-6.9 sites — the harvester gracefully
170 // no-ops when the store is missing.
171 // See `openstation_defer_core_command_palette()` below for why
172 // Core's own boot-time enqueue is unhooked on shell pages.
173 //
174 // The Core command-palette runtime is NOT enqueued here any more.
175 // Its dependency chain is the whole Gutenberg runtime (~800 KB
176 // gzipped across forty-odd bundles), paid on every boot for a ⌘K
177 // palette most sessions never open. It now ships as an ordered
178 // manifest in the config blob (`commandPalette`, built by
179 // `openstation_build_command_palette_assets_payload()`), and
180 // `src/commands/palette-assets.ts` replays it the first time the
181 // palette is invoked. The shell harvester keeps its idle-time
182 // `install()` — a graceful no-op until the store exists — and
183 // re-installs on `os-command-palette-ready`.
184 $command_palette = openstation_build_command_palette_assets_payload();
185
186 if ( function_exists( 'wp_enqueue_command_palette_assets' ) ) {
187 // Expose the same menu-commands array WP serializes into
188 // `wp.coreCommands.initializeCommandPalette(...)` on a window
189 // slot the shell harvester can read. Built in PHP from `$menu`
190 // / `$submenu`, then injected as a `before` inline on our own
191 // bundle — that runs synchronously before `desktop.min.js`
192 // boots the shell harvester, so the lookup is guaranteed
193 // populated by the time `src/commands/shell-harvester.ts`
194 // classifies any command. Decoupled from WP's command-palette
195 // mount timing (which fires from a core-registered hook we
196 // can't reorder) — and, since the palette bundles went lazy,
197 // from whether they have loaded at all.
198 $menu_map = openstation_build_command_menu_map();
199 wp_add_inline_script(
200 'openstation',
201 'window.__openStationMenuCommands = ' . wp_json_encode( $menu_map ) . ';',
202 'before'
203 );
204 }
205
206 // Pass configuration to JavaScript.
207 global $title, $parent_file, $menu;
208
209 $menu_icon = 'dashicons-admin-generic';
210 if ( ! empty( $parent_file ) && ! empty( $menu ) ) {
211 foreach ( $menu as $item ) {
212 if ( ! empty( $item[2] ) && $item[2] === $parent_file && ! empty( $item[6] ) ) {
213 $menu_icon = $item[6];
214 break;
215 }
216 }
217 }
218
219 // Build dock items from the admin menu. Core pages are ordered
220 // first (Dashboard, Posts, Plugins, Users, Settings, …), then
221 // plugin-contributed top-level routes. `openstation_dock_placement`
222 // is the per-item filter escape hatch for hiding. Shared with the
223 // REST menu endpoint so live refreshes (post plugin-activation)
224 // produce the same ordering as the boot payload.
225 $menu_payload = openstation_build_menu_payload();
226 $dock_items = $menu_payload['dockItems'];
227 $native_windows = isset( $menu_payload['nativeWindows'] )
228 ? $menu_payload['nativeWindows']
229 : array();
230
231 // The BOOT page prints every registry window's template as a real
232 // `<template>` tag (`openstation_render_native_window_templates()`,
233 // admin_footer @ 20 — before footer scripts, so the tags are in
234 // the DOM before the shell boots and `ensureTemplate()` adopts
235 // them by id). The payload's `templateHtml` copy exists for the
236 // MID-SESSION path — a bridge or probe payload delivering a
237 // window whose plugin activated after the page rendered — so on
238 // the boot config it is ~27 KB of the same markup twice. Strip it
239 // here, and only here: the bridge and probe payloads keep theirs.
240 foreach ( $native_windows as &$native_window_row ) {
241 if ( is_array( $native_window_row ) ) {
242 $native_window_row['templateHtml'] = '';
243 }
244 }
245 unset( $native_window_row );
246 $native_window_script_data = isset( $menu_payload['nativeWindowScriptData'] )
247 ? $menu_payload['nativeWindowScriptData']
248 : array();
249 $server_widgets = isset( $menu_payload['serverWidgets'] )
250 ? $menu_payload['serverWidgets']
251 : array();
252 $server_wallpapers = isset( $menu_payload['serverWallpapers'] )
253 ? $menu_payload['serverWallpapers']
254 : array();
255 $server_command_scripts = isset( $menu_payload['serverCommandScripts'] )
256 ? $menu_payload['serverCommandScripts']
257 : array();
258 $server_commands = isset( $menu_payload['serverCommands'] )
259 ? $menu_payload['serverCommands']
260 : array();
261 $server_settings_tab_scripts = isset( $menu_payload['serverSettingsTabScripts'] )
262 ? $menu_payload['serverSettingsTabScripts']
263 : array();
264 $server_settings_tabs = isset( $menu_payload['serverSettingsTabs'] )
265 ? $menu_payload['serverSettingsTabs']
266 : array();
267 $server_dock_rail_renderer_scripts = isset( $menu_payload['serverDockRailRendererScripts'] )
268 ? $menu_payload['serverDockRailRendererScripts']
269 : array();
270 $server_titlebar_button_scripts = isset( $menu_payload['serverTitleBarButtonScripts'] )
271 ? $menu_payload['serverTitleBarButtonScripts']
272 : array();
273 $server_window_action_scripts = isset( $menu_payload['serverWindowActionScripts'] )
274 ? $menu_payload['serverWindowActionScripts']
275 : array();
276 $server_window_theme_scripts = isset( $menu_payload['serverWindowThemeScripts'] )
277 ? $menu_payload['serverWindowThemeScripts']
278 : array();
279 $server_window_themes = isset( $menu_payload['serverWindowThemes'] )
280 ? $menu_payload['serverWindowThemes']
281 : array();
282 $server_window_control_scripts = isset( $menu_payload['serverWindowControlScripts'] )
283 ? $menu_payload['serverWindowControlScripts']
284 : array();
285 $server_window_controls = isset( $menu_payload['serverWindowControls'] )
286 ? $menu_payload['serverWindowControls']
287 : array();
288 $server_window_slot_scripts = isset( $menu_payload['serverWindowSlotScripts'] )
289 ? $menu_payload['serverWindowSlotScripts']
290 : array();
291 $server_window_slots = isset( $menu_payload['serverWindowSlots'] )
292 ? $menu_payload['serverWindowSlots']
293 : array();
294 $server_window_chrome_scripts = isset( $menu_payload['serverWindowChromeScripts'] )
295 ? $menu_payload['serverWindowChromeScripts']
296 : array();
297 $server_window_chromes = isset( $menu_payload['serverWindowChromes'] )
298 ? $menu_payload['serverWindowChromes']
299 : array();
300 $server_window_notices = isset( $menu_payload['serverWindowNotices'] )
301 ? $menu_payload['serverWindowNotices']
302 : array();
303 $server_games = isset( $menu_payload['serverGames'] )
304 ? $menu_payload['serverGames']
305 : array();
306 // Boot-time copy of the desktop-theme library. Without it the
307 // shell's registry seeds EMPTY, and the consequences are subtle
308 // rather than obvious: PHP has already applied the user's theme
309 // server-side (stylesheet + shell attribute), but the client
310 // can't resolve the slug to an entry, so it believes nothing is
311 // active. Themed ICONS never paint, and switching back to the
312 // system default no-ops the first time — `applyDesktopTheme()`
313 // dedupes on an `activeId` that was never set.
314 $server_desktop_themes = isset( $menu_payload['serverDesktopThemes'] )
315 ? $menu_payload['serverDesktopThemes']
316 : array();
317
318 // Slim the theme library for BOOT: `cssText` and `tokens` are
319 // each ~20 KB per theme, and neither is read at boot — the ACTIVE
320 // theme's stylesheet is server-delivered (see
321 // `openstation_enqueue_desktop_theme_style()`, whose stamp
322 // `bootAlreadyApplied()` detects), and an inactive theme's CSS
323 // only matters at the moment the user picks it in the Preferences
324 // picker — which fetches the full entries from
325 // `GET desktop-mode/v1/desktop-themes` (`ensureFullDesktopThemes()`
326 // client-side). `cssDeferred` marks the gap so the shell can tell
327 // a slimmed entry from a theme that genuinely ships no CSS.
328 // Bridge and probe payloads keep full entries.
329 foreach ( $server_desktop_themes as &$desktop_theme_row ) {
330 if ( is_array( $desktop_theme_row ) ) {
331 $desktop_theme_row['cssText'] = '';
332 $desktop_theme_row['tokens'] = new stdClass();
333 $desktop_theme_row['cssDeferred'] = true;
334 }
335 }
336 unset( $desktop_theme_row );
337 $desktop_icons = isset( $menu_payload['desktopIcons'] )
338 ? $menu_payload['desktopIcons']
339 : array();
340
341 // Files-on-the-Desktop payload (Phase 0+1). Plugin-registered
342 // file types and openers ship as metadata only; the JS side
343 // holds the executable handlers and resolves on double-click.
344 $server_file_types = function_exists( 'openstation_build_file_types_payload' )
345 ? openstation_build_file_types_payload()
346 : array();
347 $server_file_openers = function_exists( 'openstation_build_file_openers_payload' )
348 ? openstation_build_file_openers_payload()
349 : array();
350 // Entries in the menu payload carry dependency handles; their
351 // payloads ride once in `scriptDepPayloads` (GH#892). The file
352 // lists stay whole: no sync module reads them on the client, and
353 // compacting them here was the only write to the map after the
354 // menu payload froze its own, so a refresh could not match it.
355 $script_dep_payloads = isset( $menu_payload['scriptDepPayloads'] )
356 ? (array) $menu_payload['scriptDepPayloads']
357 : array();
358 $user_file_associations = function_exists( 'openstation_get_user_file_associations' )
359 ? openstation_get_user_file_associations( get_current_user_id() )
360 : array();
361 $server_wallpaper_menu_items = function_exists( 'openstation_build_wallpaper_menu_items' )
362 ? openstation_build_wallpaper_menu_items()
363 : array();
364
365 /*
366 * OS-file drop config — what the browser drop manager will
367 * accept when the user drags a file from their native desktop
368 * onto any surface inside OpenStation (wallpaper, a folder,
369 * a window, or a chromeless iframe). The allowed-mimes list is
370 * the user-scoped `get_allowed_mime_types()` (already capability
371 * gated by WordPress); the size cap is `wp_max_upload_size()`.
372 *
373 * Both are filterable so plugins can narrow or widen the set —
374 * e.g. a media-only plugin can restrict drops to images, or a
375 * docs plugin can opt PDFs in for a specific role.
376 */
377 $drop_allowed_mimes_map = current_user_can( 'upload_files' )
378 ? get_allowed_mime_types( get_current_user_id() )
379 : array();
380 /**
381 * Filter the allowed-mime map used by the OS-file drop manager.
382 *
383 * @param array<string,string> $mimes_map `ext => mime-type` map (same shape `get_allowed_mime_types()` returns).
384 * @param int $user_id The current user id.
385 */
386 $drop_allowed_mimes_map = apply_filters( 'openstation_drop_allowed_mimes', $drop_allowed_mimes_map, get_current_user_id() );
387 $drop_allowed_mimes_map = is_array( $drop_allowed_mimes_map ) ? $drop_allowed_mimes_map : array();
388 $drop_allowed_mimes = array_values( array_unique( array_values( $drop_allowed_mimes_map ) ) );
389
390 $drop_max_size = (int) wp_max_upload_size();
391 /**
392 * Filter the per-file size cap (in bytes) used by the OS-file
393 * drop manager. Returning `0` disables the client-side cap —
394 * the server still enforces its own.
395 *
396 * @param int $max_size Default `wp_max_upload_size()`.
397 * @param int $user_id The current user id.
398 */
399 $drop_max_size = (int) apply_filters( 'openstation_drop_max_size', $drop_max_size, get_current_user_id() );
400
401 /**
402 * Filter the master OS-file drop enable gate. Lets plugins
403 * disable the drop manager by role / capability beyond the
404 * default `upload_files` check (e.g. only for admins, or
405 * only on specific multisite blogs).
406 *
407 * @param bool $enabled Default — `current_user_can( 'upload_files' )`.
408 * @param int $user_id The current user id.
409 */
410 $drop_enabled = (bool) apply_filters(
411 'openstation_drop_enabled',
412 current_user_can( 'upload_files' ),
413 get_current_user_id()
414 );
415
416 $drop_config = array(
417 'enabled' => $drop_enabled,
418 'allowedMimes' => $drop_allowed_mimes,
419 'extToMime' => $drop_allowed_mimes_map,
420 'maxSize' => $drop_max_size,
421 );
422
423 // Lazy-bundle URL builder. Each lazy-loaded bundle (AI Assistant,
424 // OS Settings panel, shell-overlays, window-system)
425 // is `<script>`-injected by the main bundle on demand — they don't
426 // go through `wp_register_script`, so they don't pick up WordPress's
427 // usual `?ver=<filemtime>` cache-buster. Without one, the browser
428 // happily serves a stale cached copy across plugin updates that
429 // don't bump `OPENSTATION_VERSION`, and the main bundle's loader
430 // fires a `<script>`-loaded event for a file that's missing the
431 // fresh `window.openStation*` factory the new code expects.
432 //
433 // Mirror the `$built_version( … )` helper in `includes/assets.php`:
434 // prefer the on-disk mtime of the actual file, fall back to the
435 // plugin version when the file is missing (dev environments where
436 // the bundle hasn't been built yet).
437 $suffix = openstation_asset_suffix();
438 $lazy_bundle_url = static function ( $base ) use ( $suffix ) {
439 $path = OPENSTATION_DIR . 'assets/js/' . $base . $suffix . '.js';
440 $ver = file_exists( $path )
441 ? (string) filemtime( $path )
442 : OPENSTATION_VERSION;
443 return esc_url_raw(
444 OPENSTATION_URL . 'assets/js/' . $base . $suffix . '.js?ver=' . $ver
445 );
446 };
447
448 // The page the shell opens first. On the shell screen it is the
449 // validated `target` query arg (else the session's focused window,
450 // the default window, the Dashboard); on a solo boot it is the
451 // request's own URL. Either way the frozen portal flags are gone
452 // from it, so the derived window id matches what the dock would
453 // produce for the same page — otherwise auto-opening the entry
454 // window and clicking the same dock icon would create a duplicate.
455 $boot_target = openstation_shell_boot_target();
456 $current_page = $boot_target['url'];
457 $from_portal = $boot_target['fromPortal'];
458 $from_portal_intent = $boot_target['fromPortalIntent'];
459
460 // On the shell screen `$title` and `$parent_file` describe the
461 // screen ("OpenStation", no menu), not the page about to open. The
462 // dock entry for that page is the identity the entry window folds
463 // into, so its title and icon are the right first paint; the iframe
464 // reports its own title once it lands either way.
465 $current_title = wp_strip_all_tags( (string) $title );
466 if ( openstation_is_shell_screen_request() ) {
467 $boot_meta = openstation_shell_boot_target_meta( $current_page, $dock_items );
468 $current_title = wp_strip_all_tags( $boot_meta['title'] );
469 if ( '' !== $boot_meta['icon'] ) {
470 $menu_icon = $boot_meta['icon'];
471 }
472 }
473
474 /**
475 * Filters the desktop shell configuration passed to JavaScript.
476 *
477 * @param array $config {
478 * Desktop shell configuration.
479 *
480 * @type string $currentPage The current admin page URL.
481 * @type string $currentTitle The current page title.
482 * @type string $currentIcon Dashicon class for the current page.
483 * @type string $adminUrl The base admin URL.
484 * @type string $colorScheme The active admin color scheme.
485 * @type array $dockItems Dock items derived from the admin menu. Core WordPress pages (Dashboard, Posts, Plugins, Users, Settings, CPTs…) are ordered first; plugin-contributed top-level routes (admin.php?page=*) follow. Items hidden via `openstation_dock_placement` are omitted.
486 * @type array $nativeWindows Server-declared native windows (via `openstation_register_window`). Shell registers + syncs tiles based on this list — activation/deactivation is a diff without shell reload.
487 * @type array $serverWidgets Server-declared right-column widgets (via `openstation_register_widget`). Shell syncs the widget registry + dynamically loads plugin scripts so widgets appear in the picker without a shell reload.
488 * @type array $serverWallpapers Server-declared wallpapers (via `openstation_register_wallpaper`). Same lifecycle — shell loads the plugin's JS, reads the full `WallpaperDef` from `window.openStationWallpapers[id]`, and registers / unregisters as plugins activate / deactivate.
489 * @type array $serverCommandScripts Script handles opted-in via `openstation_register_command_script`. Shell injects each URL on activation so commands registered by `wp.os.registerCommand` appear in the palette live. Deactivation unregisters any commands whose `owner` matches the departing handle.
490 * @type array $serverCommands Server-declared command metadata (via `openstation_register_command`). Advisory today — reserved for future pre-registration shims.
491 * @type array $serverSettingsTabScripts Script handles opted-in via `openstation_register_settings_tab_script`. Shell injects each URL on activation so tabs registered by `wp.os.registerSettingsTab` appear in the OS Settings window live. Deactivation unregisters tabs attributable to the departing handle.
492 * @type array $serverSettingsTabs Server-declared settings-tab metadata (via `openstation_register_settings_tab`). Enables live unregistration on plugin deactivation without requiring JS to set `owner`.
493 * @type array $desktopIcons Server-declared desktop icons (via `openstation_register_icon`). Rendered on the wallpaper as clickable shortcut tiles.
494 * @type array $accentColors Swatch list for the OS Settings accent picker. Filterable via `openstation_accent_colors`.
495 * @type array $toastTypes Toast-notification type map. Filterable via `openstation_toast_types`.
496 * @type string $defaultWallpaper Wallpaper slug applied on first boot. Filterable via `openstation_default_wallpaper`.
497 * @type array $session Saved session (windows, focused, updated).
498 * @type string $sessionUrl REST endpoint for saving the session.
499 * @type string $mediaUrl REST endpoint for media uploads (wp/v2/media).
500 * @type string $restUrl REST API root from rest_url(), safe for pretty and plain permalink installs.
501 * @type string $defaultWindowUrl REST endpoint for saving the default-window preference.
502 * @type array $defaultWindow { enabled: bool, url: string } — current default-window preference.
503 * @type bool $canUpload Whether the user holds the `upload_files` capability.
504 * @type string $pluginUrl Plugin base URL (no trailing slash). Used by the shell to locate vendor assets and by plugins to build asset URLs.
505 * @type string $pluginVersion Plugin semver string. Surfaced in the OS Settings → About tab; plugins can read it to gate features by version.
506 * @type string $aboutFeedUrl Authenticated admin-AJAX URL that returns the cached OpenStation journal feed for the About tab.
507 * @type string $restNonce Nonce for the session REST endpoint.
508 * @type string $soloWindow Window id when the shell was asked to paint exactly one window (`?openstation_solo=<id>`); '' otherwise. No dock, taskbar, wallpaper or desk, and no session restore.
509 * @type string $portalUrl Canonical `/openstation/` URL.
510 * @type bool $fromPortal Whether the shell was reached via the portal.
511 * @type bool $fromPortalIntent Whether the portal redirect resolved from an explicit `?target=…` (user navigation intent) rather than the session's focused window or the default-window fallback. Distinguishes a bare `/openstation/` visit from a portal-redirected admin-bar click so the shell can honour the URL the user actually asked for.
512 * @type array $seenIntros Slugs of one-time announcements the user has dismissed (e.g. `['openstation-rebrand']`).
513 * @type string $seenIntrosUrl REST endpoint for the seen-intros surface — POST `/seen` to mark, DELETE the base to reset.
514 * @type bool $rebrandNotice Whether to offer this user the one-off announcement explaining the rename from Desktop Mode to OpenStation. True only when migration 5 flagged this user as a Desktop Mode user from before the rename AND they haven't dismissed the `openstation-rebrand` intro. Only ever present in the shell config, so the announcement never reaches the classic admin.
515 * }
516 */
517 $config = apply_filters(
518 'openstation_shell_config',
519 array(
520 'currentPage' => esc_url( $current_page ),
521 'currentTitle' => $current_title,
522 'currentIcon' => sanitize_html_class( $menu_icon ),
523 // `self_admin_url()`: the base a window id is derived from,
524 // and the URL the shell leaves for on exit. Both want the
525 // admin the screen is in, which is the network one when the
526 // network shell screen is what rendered.
527 'adminUrl' => esc_url( self_admin_url() ),
528 'homeUrl' => esc_url( home_url( '/' ) ),
529 // Decoded: the shell assigns this to `window.location`,
530 // where `&amp;` would make `_wpnonce` arrive as
531 // `amp;_wpnonce` and fail the nonce check.
532 'logoutUrl' => esc_url_raw(
533 html_entity_decode( wp_logout_url(), ENT_QUOTES, 'UTF-8' )
534 ),
535 'colorScheme' => sanitize_html_class( get_user_option( 'admin_color' ), 'fresh' ),
536 'dockItems' => $dock_items,
537 // Baseline menu fingerprint. The shell seeds its last-known
538 // signature from this so the first off-allowlist menu change
539 // (vs. this boot state) is caught without a wasted probe. GH#325.
540 'menuSig' => isset( $menu_payload['menuSig'] ) ? (string) $menu_payload['menuSig'] : '',
541 'nativeWindows' => $native_windows,
542 // Handle-keyed script data the entries above reference —
543 // one copy per bundle, not one per window. See
544 // `openstation_collect_native_windows_payload()`.
545 'nativeWindowScriptData' => $native_window_script_data,
546 'serverWidgets' => $server_widgets,
547 'serverWallpapers' => $server_wallpapers,
548 'serverCommandScripts' => $server_command_scripts,
549 'serverCommands' => $server_commands,
550 'serverSettingsTabScripts' => $server_settings_tab_scripts,
551 'serverSettingsTabs' => $server_settings_tabs,
552 'serverDockRailRendererScripts' => $server_dock_rail_renderer_scripts,
553 'serverTitleBarButtonScripts' => $server_titlebar_button_scripts,
554 'serverWindowActionScripts' => $server_window_action_scripts,
555 'serverWindowThemeScripts' => $server_window_theme_scripts,
556 'serverWindowThemes' => $server_window_themes,
557 'serverWindowControlScripts' => $server_window_control_scripts,
558 'serverWindowControls' => $server_window_controls,
559 'serverWindowSlotScripts' => $server_window_slot_scripts,
560 'serverWindowSlots' => $server_window_slots,
561 'serverWindowChromeScripts' => $server_window_chrome_scripts,
562 'serverWindowChromes' => $server_window_chromes,
563 'serverWindowNotices' => $server_window_notices,
564 // Boot-time copy of the payload's `serverGames` — the same
565 // list the live-refresh path applies. Without it the games
566 // registry only fills after the first chromeless
567 // full-payload refresh and the Games hub boots empty.
568 'serverGames' => $server_games,
569 'serverDesktopThemes' => $server_desktop_themes,
570 'desktopIcons' => $desktop_icons,
571 'serverFileTypes' => $server_file_types,
572 'serverFileOpeners' => $server_file_openers,
573 // Handle => dependency payload for every `scriptDeps` list in
574 // this config; see `openstation_compact_script_deps()`.
575 'scriptDepPayloads' => (object) $script_dep_payloads,
576 'userFileAssociations' => $user_file_associations,
577 'filesUrl' => esc_url_raw( rest_url( 'desktop-mode/v1/files' ) ),
578 // Pinned-notes REST base (`includes/notes/rest.php`). The
579 // notes layer boots only when this is present.
580 'notesUrl' => esc_url_raw( rest_url( 'desktop-mode/v1/notes' ) ),
581 // Gates the "Convert to post" note affordance — the convert
582 // route (and its dock drop target) only make sense for users
583 // who can author posts.
584 'canCreatePosts' => current_user_can( 'edit_posts' ),
585 'serverWallpaperMenuItems' => $server_wallpaper_menu_items,
586 'accentColors' => openstation_get_accent_colors(),
587 'toastTypes' => openstation_get_toast_types(),
588 'coreUpdate' => openstation_get_core_update(),
589 'coreNotices' => openstation_get_core_notices(),
590 'pluginNotices' => openstation_get_plugin_notices(),
591 'defaultWallpaper' => openstation_get_default_wallpaper(),
592 'session' => openstation_get_session( get_current_user_id() ),
593 // The session route runs in the main site's blog context
594 // whichever desktop posts to it, so the network screen's
595 // URL says which session it is addressing — see
596 // `openstation_rest_session_network()`.
597 'sessionUrl' => esc_url_raw(
598 is_network_admin()
599 ? add_query_arg( 'network', '1', rest_url( 'desktop-mode/v1/session' ) )
600 : rest_url( 'desktop-mode/v1/session' )
601 ),
602 'restUrl' => esc_url_raw( rest_url() ),
603 'mediaUrl' => esc_url_raw( rest_url( 'wp/v2/media' ) ),
604 'dropConfig' => $drop_config,
605 'defaultWindowUrl' => esc_url_raw( rest_url( 'desktop-mode/v1/default-window' ) ),
606 'defaultWindow' => openstation_get_default_window( get_current_user_id() ),
607 'canUpload' => current_user_can( 'upload_files' ),
608 'pluginUrl' => esc_url_raw( untrailingslashit( OPENSTATION_URL ) ),
609 'pluginVersion' => OPENSTATION_VERSION,
610 'aboutFeedUrl' => esc_url_raw(
611 add_query_arg(
612 array(
613 'action' => 'openstation_about_feed',
614 'nonce' => wp_create_nonce( 'openstation_about_feed' ),
615 ),
616 admin_url( 'admin-ajax.php' )
617 )
618 ),
619 'iframeBridgeUrl' => $lazy_bundle_url( 'iframe-bridge' ),
620 // URL of the AI Assistant lazy bundle. The main bundle
621 // ships a stub matching the public `wp.os.ai` API; the
622 // stub `<script>`-injects this URL the first time the user
623 // opens the assistant. Picking `.js` vs `.min.js` here keeps
624 // the SCRIPT_DEBUG gate server-side, matching iframeBridgeUrl.
625 'aiAssistantBundleUrl' => $lazy_bundle_url( 'ai-assistant' ),
626 // URL of the shell-overlays lazy bundle. Pre-loaded by
627 // the main bundle after first paint so action-triggered
628 // overlays (toast, confirm dialog, context menus) feel
629 // instant the first time they fire.
630 'shellOverlaysBundleUrl' => $lazy_bundle_url( 'shell-overlays' ),
631 // The shell-bundle diet: features whose right moment is a
632 // user gesture (or a presence signal) ride their own
633 // bundles instead of the boot-critical `desktop[.min].js`.
634 // Each sentinel in the shell loads its bundle at that
635 // moment — see the entry file each bundle names.
636 'fileDropBundleUrl' => $lazy_bundle_url( 'file-drop' ),
637 'filesOverlaysBundleUrl' => $lazy_bundle_url( 'files-overlays' ),
638 'notesBundleUrl' => $lazy_bundle_url( 'notes' ),
639 'dockConstellationBundleUrl' => $lazy_bundle_url( 'dock-constellation' ),
640 'windowLinkVisualsBundleUrl' => $lazy_bundle_url( 'window-link-visuals' ),
641 // Presence hint for the notes sentinel: a desktop with no
642 // notes skips the notes bundle AND the boot-time list
643 // request. Two id-only existence probes at most.
644 'hasNotes' => function_exists( 'openstation_notes_user_has_any' )
645 ? openstation_notes_user_has_any()
646 : false,
647 // URL of the full `<os-*>` component kit. The shell
648 // never loads this — its own bundles import the
649 // components they render. It exists for
650 // `wp.os.loadComponents()`, i.e. for plugin code that
651 // CANNOT import: a plugin shipped as a zip has no path
652 // to this repo at build time, so before this URL its
653 // only routes to a `<os-switch>` were to bundle a second
654 // copy or hand-roll one. Shipping the URL costs one
655 // string and keeps the SCRIPT_DEBUG choice server-side.
656 'componentsBundleUrl' => $lazy_bundle_url( 'os-components' ),
657 // Mio — the desk companion. `mio` carries the
658 // appearance + physics (see `openstation_mio_config()`);
659 // `mioBundleUrl` is the lazy PixiJS bundle the shell
660 // controller injects the first time a user switches the
661 // Mio on from its dock tile. Shipping the URL
662 // unconditionally costs one short string and keeps the
663 // SCRIPT_DEBUG choice server-side, matching every other
664 // lazy bundle here.
665 //
666 // Both keys ship whether or not the user has Mio on,
667 // and that is the whole of its cost to a shell that doesn't:
668 // ~470 bytes gzipped of config, plus a URL. No script, no
669 // style, no PixiJS. The config has to be here rather than
670 // fetched on first toggle, or the `openstation_mio_config`
671 // filter would silently not apply until the next reload.
672 'mio' => openstation_mio_config(),
673 'mioBundleUrl' => $lazy_bundle_url( 'mio' ),
674 // URL of the lazy window-system bundle (Stage 11).
675 // Holds the `Window` class and its DOM / pointer / tab /
676 // chrome helpers — the single largest module split out of
677 // the main bundle. Loaded on first `windowManager.open()`
678 // / `openNew()` call (both async); pre-loaded
679 // by the shell after first paint when no session is being
680 // restored and no `openCurrentPage` will fire.
681 'windowSystemBundleUrl' => $lazy_bundle_url( 'window-system' ),
682 // URL of the lazy phone-layer bundle. Injected by the main
683 // bundle only when the mode resolves to `mobile`, so a
684 // desktop never fetches it. `mode` carries the preference
685 // and breakpoints the first-paint head stamp already used,
686 // plus the server's default tab-bar pins — see
687 // `includes/mobile.php`.
688 'mobileBundleUrl' => $lazy_bundle_url( 'mobile' ),
689 'mode' => openstation_mode_config( get_current_user_id() ),
690 // URL of the item-visibility-menu lazy bundle — the
691 // right-click "hide from dock / desktop" menu. Injected by
692 // the main bundle's loader shim on the first right-click.
693 'itemVisibilityMenuBundleUrl' => $lazy_bundle_url( 'item-visibility-menu' ),
694 // URL of the workspace-wizard lazy bundle — the modal
695 // behind "Edit this workspace…". Injected by the main
696 // bundle's loader shim on first open.
697 'workspaceWizardBundleUrl' => $lazy_bundle_url( 'workspace-wizard' ),
698 // Server-side view of the workspace templates, so a plugin
699 // can add or drop one from PHP. The client merges these
700 // with its own built-ins by id — see
701 // `src/workspaces/server-sync.ts`.
702 'workspacePresets' => openstation_workspace_presets(),
703 // URL of the release-card lazy bundle — the vinyl core-
704 // update announcement. Injected by `maybeShowUpdate()` only
705 // when a core update is actually pending.
706 'releaseCardBundleUrl' => $lazy_bundle_url( 'release-card' ),
707 'restNonce' => wp_create_nonce( 'wp_rest' ),
708 // Non-empty when the shell was asked to paint exactly one
709 // window and nothing else. See `OPENSTATION_SOLO_FLAG`.
710 'soloWindow' => openstation_solo_window_id(),
711 'osSettings' => openstation_get_os_settings( get_current_user_id() ),
712 'osSettingsUrl' => esc_url_raw( rest_url( 'desktop-mode/v1/os-settings' ) ),
713 'seenIntros' => openstation_get_seen_intros( get_current_user_id() ),
714 'seenIntrosUrl' => esc_url_raw( rest_url( 'desktop-mode/v1/intros' ) ),
715 // True only for a user migration 5 flagged as a Desktop Mode
716 // user from before the rename, who hasn't dismissed the
717 // announcement yet. Same value that gated `os-announce`
718 // above; the dialog cannot paint without that stylesheet, so
719 // the two must not diverge.
720 'rebrandNotice' => $show_rebrand_notice,
721 'aiSearchUrl' => esc_url_raw( rest_url( 'desktop-mode/v1/ai/search' ) ),
722 // AI assistant availability + per-user toggle. Drives whether the
723 // Cmd+K palette and admin-bar icon appear, and the setup placeholder.
724 'aiAssistant' => function_exists( 'openstation_ai_assistant_config' )
725 ? openstation_ai_assistant_config()
726 : null,
727 // Lets the Features tab re-check provider availability without a
728 // reload after a connector is configured in Settings → Connectors.
729 'aiStatusUrl' => esc_url_raw( rest_url( 'desktop-mode/v1/ai/status' ) ),
730 'extendedOptions' => current_user_can( 'manage_options' ) ? openstation_get_extended_options() : null,
731 'extendedOptionsUrl' => esc_url_raw( rest_url( 'desktop-mode/v1/extended-options' ) ),
732 // Site-wide games kill switch (Extended options). Exposed to
733 // every user — the shell skips the challenges Heartbeat
734 // channel when the framework is off.
735 'gamesEnabled' => openstation_games_enabled(),
736 'currentUserIsAdmin' => current_user_can( 'manage_options' ),
737 // Null on single-site installs; its `networkAdmin` null
738 // without `manage_network`, which is what keeps the dock
739 // tile from registering.
740 'multisite' => openstation_multisite_payload(),
741 'portalUrl' => esc_url( openstation_portal_url() ),
742 'fromPortal' => $from_portal,
743 'fromPortalIntent' => $from_portal_intent,
744 // One-shot like the boot target: a switch from another
745 // site's overview lands in this one's.
746 'landInOverview' => openstation_shell_lands_in_overview(),
747 'arrivalDirection' => openstation_shell_arrival_direction(),
748 'hopLinkOffer' => function_exists( 'openstation_network_link_offer' ) ? openstation_network_link_offer() : null,
749 'pwa' => array(
750 'manifestUrl' => esc_url_raw( openstation_pwa_manifest_url() ),
751 'swUrl' => esc_url_raw( openstation_pwa_sw_url() ),
752 // Extensionless retry target for hosts whose nginx 404s
753 // virtual .js paths before WordPress runs (WordPress.com).
754 'swFallbackUrl' => esc_url_raw( openstation_pwa_sw_fallback_url() ),
755 // The site's home path — the scope the registration
756 // asks for, so a subdirectory network's sites each get
757 // their own worker instead of fighting over the root.
758 'swScope' => openstation_pwa_sw_scope(),
759 // The worker's per-user flags, computed HERE rather than
760 // baked into the served `sw.js`.
761 //
762 // A service worker is origin-wide but these are per-user
763 // preferences, so putting them in the script bytes made
764 // the body differ between an anonymous and a logged-in
765 // request — and any in-scope logged-out navigation then
766 // installed a "new" worker, which at the time reloaded
767 // the shell. The bytes are identical for everyone now;
768 // the shell posts these to the worker at boot.
769 //
770 // Computed server-side, not read from the settings
771 // snapshot client-side, because
772 // `openstation_pwa_admin_asset_cache_enabled()` applies
773 // the `openstation_pwa_admin_asset_cache` filter — an
774 // operator's site-wide veto has to keep working.
775 'swConfig' => array(
776 'adminAssetCache' => (bool) openstation_pwa_admin_asset_cache_enabled(),
777 'windowPrewarm' => ! empty( openstation_get_os_settings( get_current_user_id() )['windowPrewarmEnabled'] ),
778 ),
779 // The build this shell document belongs to. When a new
780 // worker takes over mid-session the shell asks it for
781 // the stamp it was served with and compares; only a
782 // difference — the shell's own files changed on the
783 // server — offers the user a reload. Never automatic.
784 'shellBuild' => openstation_shell_build_stamp(),
785 'stateUrl' => esc_url_raw( rest_url( 'desktop-mode/v1/pwa-state' ) ),
786 'state' => openstation_pwa_get_user_state( get_current_user_id() ),
787 // Mirrors the manifest's `name` field — used by the
788 // install pill so the button reads "Install <site>"
789 // rather than "Install <current page>" (which would
790 // be misleading: we install the whole site as an
791 // app, not the dashboard window the user happens to
792 // be viewing).
793 'appName' => get_bloginfo( 'name' ),
794 // Operators set the `openstation_pwa_force_replace_sw`
795 // filter to `true` when another root-scope service
796 // worker on the origin is blocking openstation
797 // installability (foreign-SW guard in
798 // `src/pwa/sw-register.ts`). Default `false` preserves
799 // the polite behaviour where we yield to existing PWAs.
800 'forceReplaceSw' => openstation_pwa_force_replace_sw(),
801 ),
802 // Ordered Core command-palette asset manifest, replayed on
803 // first palette invocation. `null` on pre-6.9 sites.
804 'commandPalette' => $command_palette,
805 // Stylesheets for shell surfaces that render on demand —
806 // the Preferences panel, the AI assistant, the bug-report
807 // window. None of them is a server-registered native
808 // window (they are built client-side by the shell
809 // bundle), so the `styles` companion mechanism can't
810 // carry their CSS; instead the shell injects each sheet
811 // the first time its surface opens, via
812 // `ensureDeferredStyle()` in `src/deferred-styles.ts`.
813 // Same resolved shape a native window's `styleUrl` /
814 // `styleInline` travels in.
815 // Which of the `deferredStyles` entries a game needs.
816 // `launchGame()` injects these before the window paints.
817 'gameStyleHandles' => function_exists( 'openstation_games_style_handles' )
818 ? openstation_games_style_handles()
819 : array(),
820 'deferredStyles' => openstation_build_deferred_styles(
821 array_merge(
822 array(
823 'desktop-mode-ai-assistant',
824 'desktop-mode-bug-report',
825 // The explorer's shared sheet. It rides the WP
826 // Explorer APP as a companion style, but the
827 // desktop FOLDER window paints its preview pane
828 // with the same `os-my-wordpress__*` classes and
829 // — being a native window opened straight from
830 // JS — carries no companion styles of its own.
831 // Without this, the pane rendered unstyled until
832 // the explorer had been opened once in the
833 // session.
834 'desktop-mode-my-wordpress',
835 ),
836 // The Games sheets. They also ride the hub window as
837 // companion styles, but a game is reachable without
838 // the hub — the challenge toast, solo mode, and
839 // `wp.os.games.launch()` all land in `launchGame()`
840 // with no hub window in the tab. Listing them here
841 // costs a URL each in the boot config and no CSS
842 // until `launchGame()` asks.
843 function_exists( 'openstation_games_style_handles' )
844 ? openstation_games_style_handles()
845 : array()
846 )
847 ),
848 )
849 );
850
851 wp_localize_script( 'openstation', 'openStationConfig', $config );
852
853 /**
854 * Fires when OpenStation assets are enqueued.
855 */
856 do_action( 'openstation_mode_init' );
857 }
858 add_action( 'admin_enqueue_scripts', 'openstation_enqueue_assets' );
859
860 /**
861 * Keep Core's boot-time command-palette enqueue off shell pages.
862 *
863 * WordPress 7.0 hooks `wp_enqueue_command_palette_assets()` on
864 * `admin_enqueue_scripts` by default, which puts the palette's whole
865 * dependency chain — the Gutenberg runtime, ~800 KB gzipped — on
866 * every admin page. On a SHELL page that is pure dead weight: the
867 * shell suppresses Core's palette unconditionally (the ⌘K keystroke
868 * and the admin-bar icon both route to the shell's own palette), so
869 * the runtime it powers can never be shown. Unhooking here lets the
870 * deferred manifest (`openstation_build_command_palette_assets_payload()`)
871 * capture the chain instead, and the shell loads it on the first
872 * palette invocation.
873 *
874 * Deliberately scoped: classic-mode requests keep Core's default,
875 * because a classic page is Core's own UI where Core's palette is the
876 * right one.
877 *
878 * Windows are handled separately by
879 * {@see openstation_chromeless_should_trim_command_palette()} in
880 * `includes/render/chromeless-trim.php` — same idea, but it has to
881 * drop the whole palette *family* rather than just unhook Core's
882 * callback, and it exempts block-editor screens. Unhooking alone is
883 * not enough there: a third-party palette extension that declares
884 * `wp-commands` keeps the entire chain queued as its dependency.
885 *
886 * Priority 0, ahead of Core's default 10, so the removal lands
887 * before the callback fires. On WP 6.9 (function exists, no default
888 * hook) the `remove_action()` is a harmless no-op.
889 */
890 function openstation_defer_core_command_palette() {
891 if ( ! openstation_is_shell_request() ) {
892 return;
893 }
894 remove_action( 'admin_enqueue_scripts', 'wp_enqueue_command_palette_assets' );
895 }
896 add_action( 'admin_enqueue_scripts', 'openstation_defer_core_command_palette', 0 );
897
898 /**
899 * Emits `<link rel="preload">` hints for the shell's critical-path
900 * assets so the browser starts fetching them as soon as it parses
901 * the document `<head>`.
902 *
903 * Without this, the browser doesn't discover the main `desktop.min.js`
904 * bundle URL until it parses the footer `<script>` tag — typically
905 * ~1 RTT after the rest of the page has started loading. For a 464 KB
906 * bundle on a midrange phone that's a measurable FCP delay; on a
907 * slow connection it dominates first paint entirely.
908 *
909 * Hooked at `admin_print_styles @ 1` so the preload tags land in
910 * `<head>` BEFORE the regular `<link rel="stylesheet">` tags (which
911 * default to priority 10) and well before the footer `<script>`
912 * tag. The `wp_resource_hints` filter is frontend-only (`wp_head`-
913 * driven) and isn't invoked in admin context, so we emit our own
914 * tags.
915 *
916 * Four targets by default, split across two relationship types:
917 * - `desktop[.min].js` (preload) — the shell bundle (biggest win),
918 * consumed by the footer `<script>` on this very load.
919 * - `desktop.css` (preload) — shell base CSS, needed for first
920 * paint. Its registered handle is `filemtime`-stamped so the
921 * stylesheet URL matches this hint exactly (a `?ver=` mismatch makes
922 * the browser treat the preload as unused).
923 * - `window-system[.min].js` (prefetch) — lazy bundle `<script>`-
924 * injected by the main bundle on the first `open()`.
925 * - `shell-overlays[.min].js` (prefetch) — lazy bundle injected on the
926 * first toast / dialog / context-menu.
927 *
928 * The lazy bundles use `prefetch` rather than `preload`: they're loaded
929 * later (often beyond the ~3s window Chrome allows a `preload` before it
930 * warns "preloaded but not used in time"), so `prefetch` keeps the early
931 * low-priority cache fill without the must-use-now contract.
932 *
933 * Plugins can extend the hint list via the `openstation_preload_hints`
934 * filter — e.g. a settings tab whose bundle the user opens on every
935 * visit can opt its own URL into the preload phase.
936 *
937 * Same-origin resources only — no `crossorigin` attribute. CDN hosts
938 * that serve `wp-content/plugins/` from a different origin should
939 * supply absolute URLs through the filter; in that case the consumer
940 * is responsible for the `crossorigin` semantics.
941 */
942 function openstation_print_preload_hints() {
943 if ( ! openstation_is_shell_request() ) {
944 return;
945 }
946
947 $suffix = openstation_asset_suffix();
948
949 $build_url = static function ( $relative ) {
950 $path = OPENSTATION_DIR . $relative;
951 $ver = file_exists( $path ) ? (string) filemtime( $path ) : OPENSTATION_VERSION;
952 return OPENSTATION_URL . $relative . '?ver=' . $ver;
953 };
954
955 $hints = array(
956 // Critical path — consumed on this very page load (the footer
957 // `<script>` and the shell stylesheet), so `preload` is correct.
958 array(
959 'href' => $build_url( 'assets/js/desktop' . $suffix . '.js' ),
960 'as' => 'script',
961 'rel' => 'preload',
962 ),
963 array(
964 'href' => $build_url( 'assets/css/desktop.css' ),
965 'as' => 'style',
966 'rel' => 'preload',
967 ),
968 // Lazy bundles — `<script>`-injected by the main bundle after
969 // first paint (window-system on the first `open()`, shell-overlays
970 // on the first toast / dialog / context-menu). They are frequently
971 // NOT requested within the ~3s window Chrome allows a `preload`,
972 // which produced "resource was preloaded but not used in time"
973 // warnings. `prefetch` is the right hint: same early, low-priority
974 // fetch into the cache, but no must-use-now contract — so the
975 // injected `<script src>` is served from cache with no warning.
976 array(
977 'href' => $build_url( 'assets/js/window-system' . $suffix . '.js' ),
978 'as' => 'script',
979 'rel' => 'prefetch',
980 ),
981 array(
982 'href' => $build_url( 'assets/js/shell-overlays' . $suffix . '.js' ),
983 'as' => 'script',
984 'rel' => 'prefetch',
985 ),
986 );
987
988 // The phone layer is needed at boot on a phone and never on a
989 // desktop; the server cannot see the viewport, so the user agent
990 // decides whether the hint is worth its bytes. A wrong guess costs
991 // one low-priority fetch, never a wrong layout — the stamp and the
992 // bundle loader read the real viewport.
993 if ( openstation_mode_hint_is_mobile( get_current_user_id() ) ) {
994 $hints[] = array(
995 'href' => $build_url( 'assets/js/mobile' . $suffix . '.js' ),
996 'as' => 'script',
997 'rel' => 'prefetch',
998 );
999 }
1000
1001 /**
1002 * Filters the list of resource preload hints emitted in `<head>`.
1003 *
1004 * Each entry is a `{ 'href' => string, 'as' => string,
1005 * 'rel' => 'preload'|'prefetch' }` array rendered as
1006 * `<link rel="<rel>" as="<as>" href="<href>">`. `rel` is optional and
1007 * defaults to `preload`; any value other than `prefetch` is coerced
1008 * back to `preload`. Unrecognized entries are silently skipped — keep
1009 * the contract permissive so a misconfigured plugin can't tank first
1010 * paint.
1011 *
1012 * @param array $hints Default hints (main bundle + base CSS as
1013 * `preload`; window-system + shell-overlays as
1014 * `prefetch`).
1015 */
1016 $hints = apply_filters( 'openstation_preload_hints', $hints );
1017
1018 if ( ! is_array( $hints ) ) {
1019 return;
1020 }
1021
1022 foreach ( $hints as $hint ) {
1023 if ( ! is_array( $hint ) ) {
1024 continue;
1025 }
1026 $href = isset( $hint['href'] ) ? (string) $hint['href'] : '';
1027 $as = isset( $hint['as'] ) ? (string) $hint['as'] : '';
1028 if ( '' === $href || '' === $as ) {
1029 continue;
1030 }
1031 // `preload` (critical, used on this load) vs `prefetch` (lazy,
1032 // used on a later interaction). Anything else falls back to
1033 // `preload` so a typo can't emit an invalid relationship.
1034 $rel = isset( $hint['rel'] ) ? (string) $hint['rel'] : 'preload';
1035 if ( 'prefetch' !== $rel ) {
1036 $rel = 'preload';
1037 }
1038 printf(
1039 '<link rel="%s" as="%s" href="%s" />' . "\n",
1040 esc_attr( $rel ),
1041 esc_attr( $as ),
1042 esc_url( $href )
1043 );
1044 }
1045 }
1046 add_action( 'admin_print_styles', 'openstation_print_preload_hints', 1 );
1047
1048 /**
1049 * Defers loading of non-critical openstation stylesheets so they
1050 * don't block first paint.
1051 *
1052 * Three stylesheets in the default enqueue list are only needed
1053 * after a user interaction — `dock-peek` (mouseover a dock tile),
1054 * `ai-assistant` (Cmd+K palette), `bug-report` (Report-a-bug
1055 * window). With the normal `<link rel="stylesheet">` tag they sit
1056 * on the critical path and the browser blocks first paint waiting
1057 * for them, even though nothing on screen needs them yet.
1058 *
1059 * The well-known mitigation is the `media="print" onload="…"`
1060 * pattern:
1061 *
1062 * <link rel="stylesheet" media="print"
1063 * onload="this.media='all'; this.onload=null" href="…">
1064 * <noscript><link rel="stylesheet" href="…"></noscript>
1065 *
1066 * `media="print"` makes the browser treat the sheet as
1067 * non-applicable to the current display, so it downloads with
1068 * low priority and doesn't block render. The `onload` handler
1069 * swaps `media` to the original value once the bytes arrive
1070 * (within ms of page load), making the styles take effect long
1071 * before the user clicks anything that needs them. The
1072 * `<noscript>` fallback restores critical-path behavior for JS-off
1073 * browsers, so accessibility isn't degraded.
1074 *
1075 * Filterable via `openstation_deferred_styles` so plugins can opt
1076 * their own non-critical stylesheets in (or pull a built-in out).
1077 * Chromeless iframes are skipped — their CSS pipeline is separate.
1078 *
1079 * @param string $html The original <link> tag HTML.
1080 * @param string $handle The stylesheet handle WP is printing.
1081 * @param string $href The full URL of the stylesheet.
1082 * @param string $media The media attribute value WP resolved.
1083 * @return string Possibly-rewritten tag.
1084 */
1085 function openstation_defer_non_critical_styles( $html, $handle, $href, $media ) {
1086 // Cheap gates first — `style_loader_tag` fires once per enqueued
1087 // stylesheet on EVERY admin page (frontend doesn't go through
1088 // this filter, but admin does, including pages where OpenStation
1089 // is disabled). The deferred handles only ship when OpenStation
1090 // is active, so the in_array check below would always miss on
1091 // classic-only admin pages — but the `apply_filters` call still
1092 // builds an array and walks subscribers per stylesheet. Short-
1093 // circuit on the cheap helper checks (`is_admin` / enabled /
1094 // chromeless) so non-openstation users pay nothing.
1095 if ( ! openstation_is_enabled() ) {
1096 return $html;
1097 }
1098 if ( openstation_is_chromeless_request() ) {
1099 return $html;
1100 }
1101
1102 /**
1103 * Filters the list of stylesheet handles that should be loaded
1104 * deferred via the media-print-onload pattern. Plugins can add
1105 * their own non-critical stylesheets here, or pull a built-in
1106 * out (e.g. a plugin that surfaces the AI assistant on every
1107 * page might want to keep its CSS critical-path).
1108 *
1109 * @param string[] $handles Default deferred handles.
1110 */
1111 $deferred = apply_filters(
1112 'openstation_deferred_styles',
1113 array(
1114 'os-dock-peek',
1115 'os-openstation-layout',
1116 'desktop-mode-ai-assistant',
1117 'desktop-mode-bug-report',
1118 'os-window-overview',
1119 )
1120 );
1121
1122 if ( ! in_array( $handle, (array) $deferred, true ) ) {
1123 return $html;
1124 }
1125
1126 $resolved_media = $media ? $media : 'all';
1127 $id = $handle . '-css';
1128
1129 // Two contexts, two escapers for the same `$resolved_media` value:
1130 //
1131 // - `%3$s` lands inside a JS string literal inside the HTML
1132 // `onload="…"` attribute (`this.media='%3$s'`). `esc_attr`
1133 // escapes `"` and `&` but NOT single quotes, so a media
1134 // value containing `'` would break out of the JS string.
1135 // `esc_js` is the correct escaper for "string literal inside
1136 // an event-handler attribute" — escapes single quotes, double
1137 // quotes, backslashes, newlines. Today `$resolved_media`
1138 // comes from `wp_enqueue_style()`'s `$media` parameter (always
1139 // a CSS media type / query produced by WordPress core), so
1140 // this is pure defense-in-depth, but the cost is one extra
1141 // function call.
1142 //
1143 // - `%4$s` lands inside an HTML attribute in the `<noscript>`
1144 // fallback (`media='%4$s'`). That's standard `esc_attr`.
1145 //
1146 // phpcs:disable WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet -- This filter rewrites a tag WordPress is in the process of emitting for an already-registered+enqueued stylesheet handle; the linter doesn't trace the `style_loader_tag` filter context, so the raw <link rel="stylesheet"> output is a false-positive.
1147 $markup = sprintf(
1148 '<link rel=\'stylesheet\' id=\'%1$s\' href=\'%2$s\' media=\'print\' onload="this.media=\'%3$s\'; this.onload=null;" />' . "\n" .
1149 '<noscript><link rel=\'stylesheet\' id=\'%1$s-noscript\' href=\'%2$s\' media=\'%4$s\' /></noscript>' . "\n",
1150 esc_attr( $id ),
1151 esc_url( $href ),
1152 esc_js( $resolved_media ),
1153 esc_attr( $resolved_media )
1154 );
1155 // phpcs:enable WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
1156
1157 return $markup;
1158 }
1159 add_filter( 'style_loader_tag', 'openstation_defer_non_critical_styles', 10, 4 );
1160
1161 /**
1162 * Build the admin-menu command map (name → URL) and expose it on
1163 * `window.__openStationMenuCommands`. The shell command harvester
1164 * (`src/commands/shell-harvester.ts`) reads this slot to resolve URLs
1165 * for "Go to: …" commands whose JS callbacks
1166 * (`document.location = menuCommand.url`) close over a variable URL
1167 * we can't extract from source. Without this map those commands
1168 * either get skipped (no URL recoverable) or — if the location
1169 * shadow misses — navigate the SHELL out of OpenStation.
1170 *
1171 * Mirrors what WordPress core's `wp_enqueue_command_palette_assets()`
1172 * builds for `wp.coreCommands.initializeCommandPalette(...)`. We
1173 * duplicate the logic here (instead of monkey-patching the JS init
1174 * which is timing-sensitive — WP registers its hook during core load,
1175 * so it always emits its inline before any plugin-added inline on the
1176 * same handle) and ship the result through `wp_add_inline_script` on
1177 * our own bundle handle. That decouples us entirely from WP's command-
1178 * palette mount timing.
1179 *
1180 * @global array $menu
1181 * @global array $submenu
1182 * @return array<int, array{label:string, url:string, name:string}>
1183 */
1184 function openstation_build_command_menu_map() {
1185 global $menu, $submenu, $_parent_pages;
1186 if ( ! is_array( $menu ) ) {
1187 return array();
1188 }
1189 $out = array();
1190
1191 $extract_root_text = static function ( $label ) {
1192 if ( '' === $label || ! is_string( $label ) ) {
1193 return '';
1194 }
1195 if ( class_exists( 'WP_HTML_Tag_Processor' ) ) {
1196 $processor = new WP_HTML_Tag_Processor( $label );
1197 $text = '';
1198 $depth = 0;
1199 while ( $processor->next_token() ) {
1200 $token_type = $processor->get_token_type();
1201 if ( '#text' === $token_type && 0 === $depth ) {
1202 $text .= $processor->get_modifiable_text();
1203 }
1204 if ( '#tag' === $token_type ) {
1205 if ( $processor->is_tag_closer() ) {
1206 if ( $depth > 0 ) {
1207 --$depth;
1208 }
1209 continue;
1210 }
1211 $name = $processor->get_tag();
1212 if ( $name && ! ( class_exists( 'WP_HTML_Processor' ) && WP_HTML_Processor::is_void( $name ) ) ) {
1213 ++$depth;
1214 }
1215 }
1216 }
1217 return trim( $text );
1218 }
1219 return trim( wp_strip_all_tags( $label ) );
1220 };
1221
1222 foreach ( $menu as $menu_item ) {
1223 if ( empty( $menu_item[0] ) || ! is_string( $menu_item[0] ) ) {
1224 continue;
1225 }
1226 if ( ! empty( $menu_item[1] ) && ! current_user_can( $menu_item[1] ) ) {
1227 continue;
1228 }
1229 $menu_label = $extract_root_text( $menu_item[0] );
1230 $menu_slug = $menu_item[2];
1231 $menu_url = '';
1232 // Registered plugin pages win over the direct-file test: a
1233 // legacy file-path slug ('wp-sweep/admin.php') matches the
1234 // `.php` regex yet must route through menu_page_url(). The
1235 // exception is URL-style slugs referencing a real admin file
1236 // (ACF's 'edit.php?post_type=acf-field-group' — also a
1237 // registered page) — those stay direct links, matching
1238 // classic admin's menu-header.php.
1239 if ( ( ! isset( $_parent_pages[ $menu_slug ] ) || openstation_is_admin_file_slug( $menu_slug ) ) && ( preg_match( '/\.php($|\?)/', $menu_slug ) || wp_http_validate_url( $menu_slug ) ) ) {
1240 $menu_url = $menu_slug;
1241 } elseif ( ! empty( menu_page_url( $menu_slug, false ) ) ) {
1242 $menu_url = menu_page_url( $menu_slug, false );
1243 }
1244 if ( '' !== $menu_url ) {
1245 $out[] = array(
1246 'label' => $menu_label,
1247 'url' => $menu_url,
1248 'name' => $menu_slug,
1249 );
1250 }
1251 if ( ! empty( $submenu ) && is_array( $submenu ) && array_key_exists( $menu_slug, $submenu ) ) {
1252 foreach ( $submenu[ $menu_slug ] as $submenu_item ) {
1253 if ( empty( $submenu_item[0] ) ) {
1254 continue;
1255 }
1256 if ( ! empty( $submenu_item[1] ) && ! current_user_can( $submenu_item[1] ) ) {
1257 continue;
1258 }
1259 $submenu_label = $extract_root_text( $submenu_item[0] );
1260 $submenu_slug = $submenu_item[2];
1261 $submenu_url = '';
1262 // Same registered-page vs admin-file rule as the
1263 // top-level loop.
1264 if ( ( ! isset( $_parent_pages[ $submenu_slug ] ) || openstation_is_admin_file_slug( $submenu_slug ) ) && ( preg_match( '/\.php($|\?)/', $submenu_slug ) || wp_http_validate_url( $submenu_slug ) ) ) {
1265 $submenu_url = $submenu_slug;
1266 } elseif ( ! empty( menu_page_url( $submenu_slug, false ) ) ) {
1267 $submenu_url = menu_page_url( $submenu_slug, false );
1268 }
1269 if ( '' === $submenu_url ) {
1270 continue;
1271 }
1272 $out[] = array(
1273 'label' => sprintf(
1274 /* translators: 1: parent menu label, 2: submenu label */
1275 __( '%1$s > %2$s', 'desktop-mode' ),
1276 $menu_label,
1277 $submenu_label
1278 ),
1279 'url' => $submenu_url,
1280 'name' => $menu_slug . '-' . $submenu_item[2],
1281 );
1282 }
1283 }
1284 }
1285 return $out;
1286 }
1287