[structure] Resolve intents based on documentListItem IDs if possible

packages/@sanity/structure/src/DocumentListItem.ts

@@ -55,3 +55,8 @@ export class DocumentListItemBuilder extends ListItemBuilder {
     return builder
   }
 }
+
+export function isDocumentListItem(item: any): item is DocumentListItem {
+  const listItem = item as DocumentListItem
+  return typeof listItem.schemaType !== 'undefined' && typeof listItem._id === 'string'
+}

packages/@sanity/structure/src/GenericList.ts

@@ -18,7 +18,7 @@ function noChildResolver() {
   return undefined
 }
 
-const shallowIntentChecker: IntentChecker = (intentName, params, {pane, index}): boolean => {
+export const shallowIntentChecker: IntentChecker = (intentName, params, {pane, index}): boolean => {
   return index <= 1 && defaultIntentChecker(intentName, params, {pane, index})
 }
 

packages/@sanity/structure/src/List.ts

@@ -3,11 +3,14 @@ import {SerializePath, SerializeOptions, Divider, Collection} from './StructureN
 import {ChildResolverOptions, ChildResolver} from './ChildResolver'
 import {SerializeError, HELP_URL} from './SerializeError'
 import {ListItem, ListItemBuilder} from './ListItem'
+import {IntentChecker} from './Intent'
+import {isDocumentListItem} from './DocumentListItem'
 import {
   GenericListBuilder,
   BuildableGenericList,
   GenericList,
-  GenericListInput
+  GenericListInput,
+  shallowIntentChecker
 } from './GenericList'
 
 const getArgType = (thing: ListItem) => {
@@ -26,6 +29,17 @@ const isListItem = (item: ListItem | Divider): item is ListItem => {
   return item.type === 'listItem'
 }
 
+const defaultCanHandleIntent: IntentChecker = (intentName: string, params, context) => {
+  const pane = context.pane as List
+  const items = pane.items || []
+  return (
+    items
+      .filter(isDocumentListItem)
+      .some(item => item.schemaType.name === params.type && item._id === params.id) ||
+    shallowIntentChecker(intentName, params, context)
+  )
+}
+
 const resolveChildForItem: ChildResolver = (itemId: string, options: ChildResolverOptions) => {
   const parentItem = options.parent as List
   const items = parentItem.items.filter(isListItem)
@@ -138,6 +152,7 @@ export class ListBuilder extends GenericListBuilder<BuildableList, ListBuilder>
     return {
       ...super.serialize(options),
       type: 'list',
+      canHandleIntent: this.spec.canHandleIntent || defaultCanHandleIntent,
       child: this.spec.child || resolveChildForItem,
       items: serializedItems
     }