feat: expose public sdt events

apps/docs/docs.json

@@ -104,6 +104,7 @@
                   "editor/custom-ui/custom-commands",
                   "editor/custom-ui/comments",
                   "editor/custom-ui/track-changes",
+                  "editor/custom-ui/content-controls",
                   "editor/custom-ui/context-menu",
                   "editor/custom-ui/selection-and-viewport",
                   "editor/custom-ui/document-control",

apps/docs/editor/custom-ui/content-controls.mdx

@@ -0,0 +1,57 @@
+---
+title: 'Content controls'
+description: 'Build your own UI for Word content controls (SDT fields): turn off the built-in chrome, react to the active control, and anchor your UI with getRect().'
+---
+
+Turn off SuperDoc's built-in chrome, listen for the active control, and anchor your own UI over it. The control wrappers and `data-sdt-*` attributes stay in the DOM, so your UI has something to attach to.
+
+## A minimal field chip
+
+```ts
+import { SuperDoc } from 'superdoc';
+import { createSuperDocUI } from 'superdoc/ui';
+
+new SuperDoc({
+  selector: '#editor',
+  document: '/contract.docx',
+  // Turn off the built-in labels, borders, and hover/selection chrome.
+  modules: { contentControls: { chrome: 'none' } },
+  onReady: ({ superdoc }) => {
+    const ui = createSuperDocUI({ superdoc });
+
+    superdoc.on('content-control:active-change', ({ active }) => {
+      if (!active) return chip.hide(); // `chip` is your own element
+      const rect = ui.contentControls.getRect({ id: active.id });
+      if (rect.success) chip.showAt(rect.rect, active.alias ?? active.tag);
+    });
+  },
+});
+```
+
+The event tells you *what* is active; `getRect` tells you *where* to draw. `active` is an `SdtRef` with `id`, `tag`, `alias`, `controlType`, and `scope`.
+
+## Pick the right surface
+
+| Goal | API |
+| --- | --- |
+| Active control (enter, switch, leave) | `superdoc.on('content-control:active-change')` |
+| Click inside a control | `superdoc.on('content-control:click')` |
+| Full live list and active stack | `ui.contentControls.observe()` / `getSnapshot()` |
+| Read one control | `ui.contentControls.get({ id })` |
+| Position your UI | `ui.contentControls.getRect({ id })` |
+| Hover and right-click hit-testing | `ui.viewport.entityAt()` / `contextAt()` |
+| Change content, tags, or locks | `editor.doc.contentControls.*` |
+
+`active` is the innermost control. For nested controls (an inline field inside a block clause), `activePath` carries the full stack, innermost first, so you don't also need `observe()` just to read the nesting.
+
+## Current limits
+
+- No built-in scroll-to-control. Read the position with `getRect()` and scroll your container.
+- No geometry-change subscription. Re-read `getRect()` on scroll, resize, and the `pagination-update` / `zoomChange` events.
+- No focus-by-id helper. Clicking a control in the document still drives selection.
+
+## See also
+
+- [Contract templates demo](https://github.com/superdoc-dev/superdoc/tree/main/demos/contract-templates) - a working field chip built on these APIs.
+- [Configuration](/editor/superdoc/configuration) - the `modules.contentControls.chrome` option.
+- [Document API: content controls](/document-api/features/content-controls) - read and change controls.

apps/docs/editor/superdoc/events.mdx

@@ -243,6 +243,55 @@ superdoc.on('fonts-resolved', ({ documentFonts, unsupportedFonts }) => {
 ```
 </CodeGroup>
 
+## Content controls (SDT fields)
+
+### `content-control:active-change`
+
+Fires when selection enters a content control, switches between controls, or leaves all controls.
+
+```javascript
+superdoc.on('content-control:active-change', ({ active, previous, activePath, source }) => {
+  // source: 'keyboard' | 'pointer'
+  // active / previous: SdtRef | null
+  // activePath: SdtRef[] - full active stack, innermost first ([] when none)
+});
+```
+
+`SdtRef` shape:
+
+```ts
+type SdtRef = {
+  id: string;
+  tag?: string;
+  alias?: string;
+  controlType: string;
+  scope: 'inline' | 'block';
+};
+```
+
+`active` is the deepest control (`activePath[0]`); `activePath` holds the full stack, innermost first. Controls without an `id` do not emit these events.
+
+How to interpret:
+
+1. Focus (`null -> A`): `previous === null && active !== null`
+2. Switch (`A -> B`): `previous !== null && active !== null && previous.id !== active.id`
+3. Blur (`A -> null`): `previous !== null && active === null`
+
+### `content-control:click`
+
+Fires on pointer click inside a content control.
+
+```javascript
+superdoc.on('content-control:click', ({ target, source }) => {
+  // source is always 'pointer'
+  // target: SdtRef
+});
+```
+
+Both are also available as config callbacks: `onContentControlActiveChange` and `onContentControlClick`.
+
+To build your own content-control UI on these events, see [Custom UI > Content controls](/editor/custom-ui/content-controls).
+
 ## Comments events
 
 ### `comments-update`

demos/contract-templates/src/field-chip.ts

@@ -1,25 +1,30 @@
 /**
- * Contextual smart-field chip — SD-3157 demo.
+ * Contextual smart-field chip — SD-3157 / SD-3232 demo.
  *
  * Shows a small chip anchored above the active smart-field content
- * control with the field's label and current value. Wired against the
- * public `superdoc/ui` controller (no framework — this demo is plain
- * TypeScript), using:
+ * control with the field's label and current value. Plain TypeScript
+ * (no framework), wired against two public SuperDoc APIs:
  *
- *   - `ui.contentControls.observe(...)` to react to the active control
- *   - `ui.contentControls.getRect({ id })` to anchor the chip
+ *   - `superdoc.on('content-control:active-change', ...)` to know *which*
+ *     control is active (SD-3232 events). The payload's `SdtRef` carries
+ *     the tag/alias/scope directly, so no extra lookup is needed.
+ *   - `ui.contentControls.getRect({ id })` to know *where* to draw the chip.
+ *
+ * That pairing is the intended model: events tell you what is active;
+ * `getRect()` tells you where to place your own UI.
  *
  * Narrow on purpose: only renders for `kind: 'smartField'` controls so
- * the chip doesn't collide with the existing block-clause review UI in
- * the Clauses tab. Linked-occurrence highlights, field-details popovers,
- * and clause badges are deliberate follow-ups (SD-3155 umbrella).
+ * the chip doesn't collide with the block-clause review UI in the Clauses
+ * tab. Linked-occurrence highlights, field-details popovers, and clause
+ * badges are deliberate follow-ups (SD-3155 umbrella).
  *
- * This demo runs with SuperDoc's built-in SDT chrome turned off
+ * The demo runs with SuperDoc's built-in SDT chrome turned off
  * (`modules.contentControls.chrome: 'none'`, SD-3159), so the chip is the
  * smart field's active-state UI rather than an addition on top of the
  * built-in blue label/border. The wrappers and data-sdt-* datasets are
- * still emitted, which is what `observe`/`getRect`/`get` rely on.
+ * still emitted, which is what `getRect` relies on.
  */
+import type { SuperDoc, ContentControlActiveChangePayload } from 'superdoc';
 import type { SuperDocUI } from 'superdoc/ui';
 
 export type SmartFieldLookup = {
@@ -33,11 +38,12 @@ const CHIP_CLASS = 'sd-field-chip';
 const CHIP_OFFSET_PX = 6;
 
 /**
- * Wire the chip to the controller. Returns a teardown function that
+ * Wire the chip. `superdoc` supplies the active-change events; `ui`
+ * supplies `getRect` for positioning. Returns a teardown function that
  * detaches listeners and removes the chip element. Safe to call after
  * `initialize()` has populated the field-value cache.
  */
-export function attachFieldChip(ui: SuperDocUI, lookup: SmartFieldLookup): () => void {
+export function attachFieldChip(superdoc: SuperDoc, ui: SuperDocUI, lookup: SmartFieldLookup): () => void {
   const chipEl = document.createElement('div');
   chipEl.className = CHIP_CLASS;
   chipEl.style.position = 'fixed';
@@ -50,12 +56,11 @@ export function attachFieldChip(ui: SuperDocUI, lookup: SmartFieldLookup): () =>
   let currentKey: string | null = null;
 
   /**
-   * Clear the active control entirely. Use ONLY when the controller
-   * tells us "no active SDT" — i.e. the observe callback fires with
-   * `activeId: null` or the active control isn't a smart field. Do
-   * NOT call this from the positioning loop on a transient rect miss
-   * (a reflow can drop the rect for one tick; clearing here would
-   * leave the chip hidden until the user clicks away and back).
+   * Clear the active control entirely. Use ONLY when active-change tells
+   * us "no active smart field" (active is null, or not a smart field). Do
+   * NOT call this from the positioning loop on a transient rect miss (a
+   * reflow can drop the rect for one tick; clearing here would leave the
+   * chip hidden until the user clicks away and back).
    */
   const clearActive = () => {
     chipEl.style.visibility = 'hidden';
@@ -72,9 +77,8 @@ export function attachFieldChip(ui: SuperDocUI, lookup: SmartFieldLookup): () =>
     if (!currentId) return;
     const rect = ui.contentControls.getRect({ id: currentId });
     if (!rect.success) {
-      // Transient miss — keep the active state so the next scroll /
-      // resize / observe tick can re-anchor without requiring the
-      // user to click away.
+      // Transient miss — keep the active state so the next scroll / resize
+      // tick can re-anchor without requiring the user to click away.
       hideVisually();
       return;
     }
@@ -113,17 +117,18 @@ export function attachFieldChip(ui: SuperDocUI, lookup: SmartFieldLookup): () =>
 
   const onScrollOrResize = () => positionChip();
 
-  const unsubscribe = ui.contentControls.observe((snapshot) => {
-    // Narrow to smart-field SDTs only. Block-level reusable clauses
-    // have their own review surface in the Clauses tab; rendering a
-    // chip on them would compete with that flow.
-    const activeId = snapshot.activeId;
-    if (!activeId) {
+  // SD-3232: the active control comes from the public SuperDoc event. The
+  // payload includes the SdtRef (id + tag), so we can narrow to smart
+  // fields and anchor by id without a separate lookup.
+  const onActiveChange = ({ active }: ContentControlActiveChangePayload) => {
+    if (!active) {
       clearActive();
       return;
     }
-    const info = ui.contentControls.get({ id: activeId });
-    const tagStr = info?.properties?.tag;
+    // Narrow to smart-field SDTs only. Block-level reusable clauses have
+    // their own review surface in the Clauses tab; a chip on them would
+    // compete with that flow.
+    const tagStr = active.tag;
     if (!tagStr) {
       clearActive();
       return;
@@ -139,16 +144,17 @@ export function attachFieldChip(ui: SuperDocUI, lookup: SmartFieldLookup): () =>
       clearActive();
       return;
     }
-    currentId = activeId;
+    currentId = active.id;
     currentKey = parsed.key;
     update();
-  });
+  };
 
+  superdoc.on('content-control:active-change', onActiveChange);
   window.addEventListener('scroll', onScrollOrResize, true);
   window.addEventListener('resize', onScrollOrResize);
 
   return () => {
-    unsubscribe();
+    superdoc.off('content-control:active-change', onActiveChange);
     window.removeEventListener('scroll', onScrollOrResize, true);
     window.removeEventListener('resize', onScrollOrResize);
     chipEl.remove();

demos/contract-templates/src/main.ts

@@ -279,7 +279,9 @@ async function initialize(instance: DemoSuperDoc): Promise<void> {
   // leave the previous controller's scroll/resize listeners attached
   // to `window` and the previous chip element in the DOM.
   state.ui = createSuperDocUI({ superdoc: instance });
-  state.fieldChipTeardown = attachFieldChip(state.ui, {
+  // Active control comes from the SuperDoc event (SD-3232); placement from
+  // the UI controller's getRect (SD-3157).
+  state.fieldChipTeardown = attachFieldChip(instance, state.ui, {
     labelFor: (key) => FIELDS.find((f) => f.key === (key as FieldKey))?.label ?? key,
     valueFor: (key) => state.values[key as FieldKey],
   });

demos/contract-templates/src/style.css

@@ -264,11 +264,12 @@ input:focus {
 }
 
 /*
- * Contextual smart-field chip (SD-3157). Floats over the active smart-
- * field SDT showing field label + live value. Wired in field-chip.ts
- * against `ui.contentControls.observe` + `getRect`. With built-in chrome
- * off (SD-3159), the chip is the smart field's active-state affordance:
- * custom UI anchored to the SDT via the public geometry API.
+ * Contextual smart-field chip (SD-3157 / SD-3232). Floats over the active
+ * smart-field SDT showing field label + live value. Wired in field-chip.ts
+ * against the public `content-control:active-change` event (what's active)
+ * + `ui.contentControls.getRect` (where to draw). With built-in chrome off
+ * (SD-3159), the chip is the smart field's active-state affordance: custom
+ * UI anchored to the SDT via public events and the geometry API.
  */
 .sd-field-chip {
   display: inline-flex;