Honor UntilChanged in sync; let SearchSelect own its disabled look

Follow-ups on the add-form fixes:

- syncSelectInputUntilChanged now actually stops mirroring once the user edits
  the target (the "UntilChanged" contract). The old focus-based stop was a
  no-op (wrong removeEventListener reference), so live sync kept clobbering a
  manually-edited Sort name. Track dirty targets in a Set keyed by syncData
  index; programmatic writes don't fire "input", so only real user edits mark a
  target dirty. Drops the dead focus listener.

- SearchSelect now greys itself when disabled, via has-[:disabled]: utilities on
  its container class — the visible "box" is the wrapper <div>, so disabling the
  transparent inner input alone left it looking active. The component owns its
  disabled appearance; callers only toggle the inner control's `disabled`.

- Document the composite-widget disabling approach in CLAUDE.md and the
  SearchSelect docstring.

Extends the e2e tests: sync drops after a manual Sort name edit; disabled
related-game wrapper computes opacity 0.5 (and 1 when re-enabled).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CLAUDE.md

@@ -189,5 +189,6 @@ Pytest settings are in `pyproject.toml` under `[tool.pytest.ini_options]` (`DJAN
 - **Signals handle side-effects** — do not manually recalculate `Game.playtime` or `Purchase.num_purchases`; the signals in `games/signals.py` do this on save/delete.
 - **Button colors**: `blue` (primary action), `red` (destructive), `gray` (secondary), `green` (positive). Icon buttons use `icon=True`.
 - **Inline Alpine.js** is used for client-side reactivity in domain components (`GameStatusSelector`, `SessionDeviceSelector`). The pattern is `x-data="{...}"` with `fetchWithHtmxTriggers()` for PATCH API calls.
+- **Disabling composite widgets**: a composite widget (e.g. `SearchSelect`) carries its `id` on a wrapper `<div>`, which has no `disabled` state — setting `.disabled` on it is a no-op. Disable the inner control (for `SearchSelect`, the `[data-search-select-search]` input); the **component owns its disabled *look*** via `has-[:disabled]:` utilities on its container class, so callers toggle only the control's `disabled`, never styles.
 - **Platform icons** are SVG snippets in `games/templates/icons/<slug>.html`. Add new ones there and reference them by slug in `Platform.icon`.
 - **Name compound types explicitly** — if a `tuple`, `dict`, or other compound value is passed between functions or appears in multiple signatures, give it a named type (`TypedDict`, `NamedTuple`, or a `type` alias) rather than repeating the structural annotation. This applies even to small types used in only a few places; the name carries intent that the structure cannot. Examples: `LabeledOption = tuple[str, str]` instead of repeating `tuple[str, str]` for (value, label) pairs; `RangeValues(min, max)` instead of `tuple[str, str]` for range bounds.

common/components/search_select.py

@@ -9,6 +9,13 @@ This module imports only from ``common.components`` — it has no Django-forms o
 ``data-*`` attributes wired up by ``ts/search_select.ts`` (compiled to
 ``games/static/js/dist/search_select.js``).
 
+**Disabling**: this is a composite widget — its ``id`` sits on the wrapper
+``<div>``, which has no ``disabled`` state of its own. To disable it, set
+``disabled`` on the inner search ``<input>`` (``[data-search-select-search]``);
+the wrapper then greys itself via the ``has-[:disabled]:`` utilities in
+``_CONTAINER_CLASS``. Callers toggle only the control's ``disabled`` — never
+styles. (See ``ts/add_purchase.ts`` gating ``related_game`` on the type field.)
+
 Option sourcing follows two axes. *Population*: options are either rendered
 inline up front (``options=``, no ``search_url``) or fetched from ``search_url``.
 *Completeness*: without a ``search_url`` the inline set is the whole dataset and
@@ -47,9 +54,13 @@ LabeledOption = tuple[str, str]
 # so its pills/hidden inputs flow as direct participants of that row, inline
 # with the search input. The options panel is absolute, so it sits outside the
 # flex flow. (border omitted intentionally — see if it's needed later.)
+# The widget owns its disabled appearance: when any control inside it is
+# :disabled (e.g. add_purchase.ts disabling the search input), the wrapper greys
+# itself via :has() — callers only toggle the control's `disabled`, never styles.
 _CONTAINER_CLASS = (
     "relative flex flex-wrap items-center gap-1 p-2 "
-    "rounded-base bg-neutral-secondary-medium"
+    "rounded-base bg-neutral-secondary-medium "
+    "has-[:disabled]:opacity-50 has-[:disabled]:cursor-not-allowed"
 )
 _PILLS_CLASS = "contents"
 _SEARCH_CLASS = (

e2e/test_widgets_e2e.py

@@ -167,8 +167,39 @@ def test_add_purchase_type_game_disables_related_game_search(
     (a <div> ignores the disabled property)."""
     page = authenticated_page
     page.goto(f"{live_server.url}{reverse('games:add_purchase')}")
+    wrapper = page.locator("#id_related_game")
     search = page.locator('#id_related_game [data-search-select-search]')
+
     page.select_option("#id_type", "game")
     expect(search).to_be_disabled()
+    # The component greys itself via has-[:disabled] when the input is disabled.
+    assert wrapper.evaluate("el => getComputedStyle(el).opacity") == "0.5"
+
     page.select_option("#id_type", "dlc")
     expect(search).to_be_enabled()
+    assert wrapper.evaluate("el => getComputedStyle(el).opacity") == "1"
+
+
+def test_add_game_sync_stops_once_sort_name_edited(
+    authenticated_page: Page, live_server
+):
+    """Name → Sort name mirrors live, but stops the moment the user edits Sort
+    name directly (the 'UntilChanged' contract). Editing Name afterwards must
+    not clobber the user's manual Sort name."""
+    page = authenticated_page
+    page.goto(f"{live_server.url}{reverse('games:add_game')}")
+    name = page.locator("#id_name")
+    sort = page.locator("#id_sort_name")
+
+    name.click()
+    name.type("Halo")
+    expect(sort).to_have_value("Halo")  # live mirror before any manual edit
+
+    sort.fill("Custom Sort")  # user takes over the target → sync drops
+    expect(sort).to_have_value("Custom Sort")
+
+    name.click()
+    name.press("End")
+    name.type(" 2")
+    expect(name).to_have_value("Halo 2")
+    expect(sort).to_have_value("Custom Sort")  # not clobbered

games/static/base.css

@@ -3430,6 +3430,16 @@
       outline-style: none;
     }
   }
+  .has-\[\:disabled\]\:cursor-not-allowed {
+    &:has(*:is(:disabled)) {
+      cursor: not-allowed;
+    }
+  }
+  .has-\[\:disabled\]\:opacity-50 {
+    &:has(*:is(:disabled)) {
+      opacity: 50%;
+    }
+  }
   .data-\[search-select-highlighted\]\:bg-brand {
     &[data-search-select-highlighted] {
       background-color: var(--color-brand);

ts/utils.ts

@@ -38,9 +38,10 @@ function toISOUTCString(date: Date): string {
 }
 
 /**
- * Mirrors each source element's value onto its target until the target is
- * focused (manual edit wins). Each syncData entry maps a source selector and
- * property onto a target selector and property.
+ * Mirrors each source element's value onto its target live as the user types,
+ * until the user edits the target directly — at which point that target is
+ * "dirty" and the manual value wins (no more mirroring into it). Each syncData
+ * entry maps a source selector and property onto a target selector and property.
  */
 function syncSelectInputUntilChanged(syncData: Array<{ source: string; target: string; source_value: string; target_value: string }>, parentSelector: string | Document = document) {
   const parentElement =
@@ -52,48 +53,31 @@ function syncSelectInputUntilChanged(syncData: Array<{ source: string; target: s
     console.error(`The parent selector "${parentSelector}" is not valid.`);
     return;
   }
-  // One delegated "input" listener handles every source. "input" (not "change")
-  // makes the mirror live as the user types, instead of only on blur.
+  // One delegated "input" listener drives both directions per syncItem. "input"
+  // (not "change") makes the mirror live as the user types. A target the user
+  // edits is marked dirty so the mirror stops clobbering it — programmatically
+  // setting target.value does NOT fire "input", so our own writes never mark a
+  // target dirty; only real user edits do.
+  const dirtyTargets = new Set<number>();
   parentElement.addEventListener("input", function (event) {
-    // Loop through each sync configuration item
-    syncData.forEach((syncItem: { source: string; target: string; source_value: string; target_value: string }) => {
-      // Check if the event target matches the source selector
-      if ((event.target as HTMLElement).matches(syncItem.source)) {
-        if (!event.target) return;
-        const sourceElement = event.target;
-        const valueToSync = getValueFromProperty(
-          sourceElement,
-          syncItem.source_value
-        );
+    const eventTarget = event.target as HTMLElement;
+    syncData.forEach((syncItem, index) => {
+      // User edited the target directly → stop mirroring into it.
+      if (eventTarget.matches(syncItem.target)) {
+        dirtyTargets.add(index);
+        return;
+      }
+      // Source changed → mirror into the target unless the user took it over.
+      if (eventTarget.matches(syncItem.source) && !dirtyTargets.has(index)) {
+        const valueToSync = getValueFromProperty(eventTarget, syncItem.source_value);
         const targetElement = document.querySelector<HTMLSelectElement>(syncItem.target);
-
         if (targetElement && valueToSync !== null) {
-          console.log(`Changing value of ${syncItem.target} to ${valueToSync}`);
-          (targetElement as unknown as Record<string, unknown>)[syncItem.target_value] = valueToSync;
+          (targetElement as unknown as Record<string, unknown>)[syncItem.target_value] =
+            valueToSync;
         }
       }
     });
   });
-
-  // Set up a single focus event listener on the document for handling all target focuses
-  const syncListener = (event:  Event) => {
-      // Loop through each sync configuration item
-      syncData.forEach((syncItem: { source: string; target: string; source_value: string; target_value: string }) => {
-        // Check if the focus event target matches the target selector
-        if ((event.target as HTMLElement).matches(syncItem.target)) {
-          // Remove the change event listener to stop syncing
-          // This assumes you want to stop syncing once any target receives focus
-          // You may need a more sophisticated way to remove listeners if you want to stop
-          // syncing selectively based on other conditions
-          document.removeEventListener("change", syncListener);
-        }
-      });
-    }
-  parentElement.addEventListener(
-    "focus",
-    syncListener,
-    true
-  ); // Use capture phase to ensure the event is captured during focus, not bubble
 }
 
 /**