Three tools (archive, browse, classifier) independently implemented
an empty-state pattern with three different CSS class naming
conventions and slightly different rules:
archive: .empty-state + .empty-state-content (BEM-less)
browse: .empty-state + .empty-state__inner (BEM)
classifier: .empty-state + .empty-state-content (BEM-less)
Same visual intent ("nothing's loaded yet — here's a welcome card
with instructions"), implemented three times with subtly different
spacing, no shared body styling for h2/p/ul/li, and incompatible
class names that prevented a future tool from copy-pasting the
pattern.
Promote a single consolidated rule set to shared/base.css using
BEM naming throughout:
.empty-state — base (flex centered, padding)
.empty-state--overlay — modifier: position absolute,
top 50px to clear app-header,
z-index 10. Used by archive
and classifier (their empty
states sit OVER the main
layout).
.empty-state__inner — content card (left-aligned,
text-muted, max-width 640)
.empty-state__inner--centered — modifier: tighter max-width
500, centered text, 2rem
padding. Used by tools whose
welcome screen reads as a
centered card.
.empty-state__inner h2/p/ul/ol/li — typography defaults
.empty-state__inner .note — italic small-print
.welcome-list — bullet list with left-aligned
text + auto margins; safe to
nest inside a centered card.
Per-tool changes:
- archive/template.html, archive/js/app.js: rename
.empty-state-content → .empty-state__inner empty-state__inner--centered;
add .empty-state--overlay to the outer .empty-state container.
Also the runtime-injected unsupported-browser markup in
showUnsupportedBrowserMessage() and the showHttpErrorState
selector.
- classifier/template.html: same renames.
- archive/css/layout.css + components.css: delete .empty-state*
and .welcome-list rules (now in shared).
- classifier/css/layout.css: same. Keep .empty-state.drag-over
locally — classifier is the only tool whose empty state acts
as a drop target.
- browse/css/base.css: delete .empty-state* (shared covers it).
browse's template was already using .empty-state__inner so no
template change needed.
LOC: shared/base.css gains ~70 lines; per-tool overrides lose ~85
combined. Net -15. More importantly, future tools can reuse the
pattern by adding two divs and (optionally) the --centered or
--overlay modifiers; no copy-paste required.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two more half-contract leaks surfaced by sweeping shared chrome class
usage across tools:
1. form/ had its own design-token namespace (--color-primary,
--color-bg, --color-text, --color-border, --color-bg-alt,
--color-text-muted) defined nowhere but fallback'd to hardcoded
hex values different from shared (#1e3a5f vs shared's #2a5a8a).
Form's buttons, inputs, fieldsets, array-row borders, and status
colors all rendered with subtly different palette than the rest
of the suite.
Form also redefined .btn, .btn-primary, and a (form-local)
.btn-small class — the redefinition shadowed shared/base.css's
button system entirely. Form's JS used 'btn btn-small' for the
add/remove row buttons in form-array widgets.
Fixes:
- form/css/form.css: rename every --color-* reference to the
matching shared token (--primary, --bg, --bg-secondary, --text,
--text-muted, --border, --radius, --danger, --success).
- form/css/form.css: delete the .btn / .btn-primary / .btn-small
blocks entirely. Shared covers .btn / .btn-primary /
.btn-secondary / .btn-sm / .btn-lg / .btn-link.
- form/js/array.js: switch the row add/remove buttons to
'btn btn-sm btn-secondary' so they pick up shared's sizing
and outline variant.
- tests/form-safety.spec.js: update the selector
button.btn-small → button.btn-sm.
2. browse/ had .hidden { display: none !important; } — exact
duplicate of shared/base.css's rule. Delete the redundant copy
(left a one-line comment pointer in case anyone wonders why
it's missing from the local sheet).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The two filter rows (📄 file/ext + 📁 folder) didn't really earn their
header real estate. Browse is for navigating directory structure;
ad-hoc filters across a tree of mixed file types and depths weren't
the right affordance, and the visual weight competed with the column
headers and the breadcrumb. Removed entirely:
- template.html: dropped both <tr class="filter-row"> rows in <thead>,
the related "Filter rows" help section, and the empty-state copy
that mentioned the 📄/📁 rows.
- init.js: dropped state.filters (file/folder/ext slots).
- events.js: dropped the .column-filter[data-filter] input wiring.
- tree.js: dropped recomputeVisibility() and the n.visible plumbing
in visibleIds() and updateCount(). Render is now a straight depth-
first walk over expanded subtrees; the count is just total rows.
setFilter is removed from the public API.
- css/tree.css: dropped .filter-row*, .filter-row__icon, and the
browse-local .column-filter rules (.column-filter is also defined
in shared/base.css for tools that still use it; that stays).
No test changes — tests/browse.spec.js never exercised filters.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Bring every tool's header in line with archive's pattern:
[logo] [title] [version] [Add Local Directory] [⟳] ............... [◐] [?]
------------- header-left --------------- ----- header-right -
Changes per tool:
* browse: rename "Select Directory" → "Add Local Directory"; add the
red-non-stable wrap to the build label (was missing); add a help
panel + bundle shared/help.js.
* classifier: rename selectDirectoryBtn → addDirectoryBtn,
refreshBtn → refreshHeaderBtn for consistency. Update all JS
callers and welcome-screen copy to the new label.
* mdedit: same id rename. Move the previously-in-pane refresh
button into the header. Stop renaming the dir button to
"Directory: <name>" once a folder is loaded — instead use the
shared btn--subtle variant to de-emphasize while keeping the
standard label.
* transmittal: convert non-standard <div class="app-header"> with
spacer/icons containers to <header class="app-header"> with the
canonical header-left/header-right pair. Move the publish split-
button into header-left (Transmittal-specific primary action).
Remove dead .app-header__spacer/__icons/header-icon-btn CSS now
that nothing references those classes.
* landing, form: add help-btn + help-panel + bundle shared/help.js.
Each panel is tool-specific (project picker docs for landing,
schema-driven form docs for form).
Cross-cutting:
* shared/base.css: promote .btn--subtle from browse/css/tree.css
so any tool with an online mode can de-emphasize Add Local
Directory consistently.
Verified all 7 tools in headless Chromium: header structure correct,
build label red on non-stable cuts, help panel opens + closes via
button + Esc.
- Vendor JSZip locally (shared/vendor/jszip.min.js) and bundle into
the browse build instead of CDN-loading. Eliminates the failure
mode where ZIP rows can't expand because the CDN script doesn't
load (CSP, network, etc.). Tool now works fully offline.
- Replace the toolbar filter input + ext multi-select with two
spreadsheet-style auto-filter rows in <thead>:
- 📄 row: file-name filter + extension filter
- 📁 row: folder-name filter
Each input uses shared/zddc-filter syntax (substring/!negate/
^startsWith/$endsWith/regex/| or/space and).
- New visibility model with ancestor-of-match awareness:
- file matches keep their ancestor folders visible (path-to-hit)
- folder match keeps its descendants visible
- filters compose (file ∧ folder ∧ ext) so combinations narrow
Computed model-side; render walks only visible nodes.
- Replace 🏠 emoji breadcrumb-root with an inline outline-stroke SVG
that tints with currentColor.
Bundles Phase 2 polish + the user-requested header/breadcrumb work:
- Breadcrumbs replacing the plain currentPath span. Server mode
renders linkified ancestor segments (each <a> navigates to that
directory; the browser fetches browse.html, the new instance
auto-loads the listing). FS-API mode renders the rootHandle name
as a non-link (no ancestor handles to navigate). Both prefix the
path with a 🏠 root icon. Trailing slash + bold-current segment
match common file-explorer conventions.
- Subdued 'Select Directory' button in server mode. Once browse is
serving a real directory listing, the local-folder switcher is
available but visually quiet (btn--subtle: transparent, muted
color). FS-API mode keeps the primary styling (it's how the user
got there). New btn--subtle CSS class added to browse's tree.css.
A refresh button (⟳) appears next to it in both modes; clicking
it re-fetches the current root listing.
- Header consistency: browse now matches archive's header layout
(refresh + help buttons in addition to theme on the right). Help
is a placeholder for future help dialog wiring.
- File preview popup. Click a file row → opens a popup window with
the file rendered. Plain types (PDF, HTML, image) load in
iframes; TIFF + ZIP listings via shared/preview-lib.js's
renderTiff / renderZipListing helpers; text via <pre>; unknown
types → 'click Download' placeholder. Modifier-click (ctrl/cmd/
shift) and middle-click still open the file in a new tab via the
underlying <a target=_blank>. Single popup window is reused
across multiple file clicks (matches archive's UX).
- ZIP inline expansion. .zip files have a chevron and act like
folders in the tree. First expand fetches the zip bytes
(server URL or FS handle or parent-zip read), parses with JSZip
(auto-loaded from CDN), and synthesizes the entry tree. Nested
directories within the zip lazy-expand on demand by re-walking
the cached entry list at the right path prefix. Click on a
zip-entry file opens the preview popup with bytes read from
JSZip. Recursive expand-all skips zip archives by design — they
can be very large, and explicit click-to-expand is safer.
- Extension multi-select filter. Toolbar now has a <select
multiple> populated with extensions present in the current
view. Filter is OR-of-selected; combined with the name filter
it's AND-of-both. Folders pass through (so expanding a folder
whose name doesn't match the ext filter still shows its file
children that do match).
Three issues from initial v0.0.12 dev/prod testing:
1. Online listings empty.
directory.go was missing Vary: Accept on its responses, so
browser/CDN cached the HTML response (the embedded browse.html)
and served it again when browse's JS later fetched the same URL
with Accept: application/json. JSON parse failed, autoDetect
returned null, empty state showed. Adds Vary: Accept on both
branches and changes browse.html cache-control to no-cache so
deployed updates land immediately.
2. Top-level folder rows tall, shrink as subtree expands.
The .browse-table had flex:1 in a flex column. <table> in flex
doesn't reliably distribute height across rows — with few rows,
each row stretched. Wrap the table in a div with overflow:auto
and drop flex:1 from the table itself.
3. Recursive expand/collapse.
Shift-click (or alt-click) on a folder now expand-all or
collapse-all its subtree. Plain click still toggles just that
folder. Implementation: tree.expandSubtree() walks BFS, loading
each level's children in parallel, re-rendering between levels
so the user sees progress. tree.collapseSubtree() recursively
marks the subtree collapsed (children stay loaded for instant
re-expand).
A new HTML tool — browse — that lists the contents of any directory.
Designed for ZDDC archives but no ZDDC-specific filtering; just a
straight folder browser with expand/collapse, sort, and name filter.
Modes (auto-detected at page load):
- Online: when served by zddc-server at a folder URL, queries
the same URL with Accept: application/json to load the listing
and renders it. Auto-served as the default at any directory
under ZDDC_ROOT without an index.html (replacing the previous
minimal-HTML stub from directory.go).
- Local: 'Select Directory' button uses FileSystemAccessAPI to
pick any folder on disk; works in Chromium-based browsers.
Features (Phase 1 — what's in this commit):
- Tree view with lazy-loaded folders (children fetched on first
expand).
- Sort by name / size / extension / date (column header click).
- Filter by name substring (toolbar input).
- File click opens in a new tab — for server-backed pages,
routes through zddc-server's normal handler so .archive
redirects + apps cascade overrides + ACL all apply.
Phase 2 deferred:
- ZIP files inline expansion (treat archive entries as virtual
children).
- File preview popup (reuse shared/preview-lib.js).
- Extension multi-select filter.
Wiring:
- browse/ added to top-level ./build's per-tool list, embed
block, versions.txt, and the lockstep release commit + tag set.
All seven tools (archive, transmittal, classifier, mdedit,
landing, form, browse) advance together on stable cuts.
- shared/build-lib.sh: browse added to ZDDC_RELEASE_TOOLS and
verify_channel_links's per-tool loop.
- zddc/internal/apps/embed.go: //go:embed browse.html +
EmbeddedBytes("browse") case.
- zddc/internal/apps/availability.go: browse available at every
directory (same as archive).
- zddc/internal/apps/handler.go: MatchAppHTML routes
/<dir>/browse.html → 'browse'.
- zddc/internal/handler/directory.go: when a directory request
arrives with Accept: text/html and no index.html exists,
serve the embedded browse.html bytes (with a JSON-fallback
if the embedded slot is empty during bootstrap).
