feat(Modal/Popover/Slideover): add close:prevent event (#3958)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

docs/content/3.components/modal.md

@@ -276,7 +276,7 @@ This allows you to move the trigger outside of the Modal or remove it entirely.
 
 ### Prevent closing
 
-Set the `dismissible` prop to `false` to prevent the Modal from being closed when clicking outside of it or pressing escape.
+Set the `dismissible` prop to `false` to prevent the Modal from being closed when clicking outside of it or pressing escape. A `close:prevent` event will be emitted when the user tries to close it.
 
 ::component-code
 ---

docs/content/3.components/popover.md

@@ -183,7 +183,7 @@ In this example, leveraging [`defineShortcuts`](/composables/define-shortcuts),
 
 ### Prevent closing
 
-Set the `dismissible` prop to `false` to prevent the Popover from being closed when clicking outside of it or pressing escape.
+Set the `dismissible` prop to `false` to prevent the Popover from being closed when clicking outside of it or pressing escape. A `close:prevent` event will be emitted when the user tries to close it.
 
 ::component-example
 ---

docs/content/3.components/slideover.md

@@ -275,7 +275,7 @@ This allows you to move the trigger outside of the Slideover or remove it entire
 
 ### Prevent closing
 
-Set the `dismissible` prop to `false` to prevent the Slideover from being closed when clicking outside of it or pressing escape.
+Set the `dismissible` prop to `false` to prevent the Slideover from being closed when clicking outside of it or pressing escape. A `close:prevent` event will be emitted when the user tries to close it.
 
 ::component-code
 ---

src/runtime/components/Modal.vue

@@ -55,6 +55,7 @@ export interface ModalProps extends DialogRootProps {
 
 export interface ModalEmits extends DialogRootEmits {
   'after:leave': []
+  'close:prevent': []
 }
 
 export interface ModalSlots {
@@ -97,20 +98,23 @@ const rootProps = useForwardPropsEmits(reactivePick(props, 'open', 'defaultOpen'
 const portalProps = usePortal(toRef(() => props.portal))
 const contentProps = toRef(() => props.content)
 const contentEvents = computed(() => {
-  const events = {
+  const defaultEvents = {
     closeAutoFocus: (e: Event) => e.preventDefault()
   }
 
   if (!props.dismissible) {
-    return {
-      pointerDownOutside: (e: Event) => e.preventDefault(),
-      interactOutside: (e: Event) => e.preventDefault(),
-      escapeKeyDown: (e: Event) => e.preventDefault(),
-      ...events
-    }
+    const events = ['pointerDownOutside', 'interactOutside', 'escapeKeyDown', 'closeAutoFocus'] as const
+    type EventType = typeof events[number]
+    return events.reduce((acc, curr) => {
+      acc[curr] = (e: Event) => {
+        e.preventDefault()
+        emits('close:prevent')
+      }
+      return acc
+    }, {} as Record<EventType, (e: Event) => void>)
   }
 
-  return events
+  return defaultEvents
 })
 
 const ui = computed(() => tv({ extend: tv(theme), ...(appConfig.ui?.modal || {}) })({

src/runtime/components/Popover.vue

@@ -36,7 +36,9 @@ export interface PopoverProps extends PopoverRootProps, Pick<HoverCardRootProps,
   ui?: Popover['slots']
 }
 
-export interface PopoverEmits extends PopoverRootEmits {}
+export interface PopoverEmits extends PopoverRootEmits {
+  'close:prevent': []
+}
 
 export interface PopoverSlots {
   default(props: { open: boolean }): any
@@ -72,11 +74,15 @@ const portalProps = usePortal(toRef(() => props.portal))
 const contentProps = toRef(() => defu(props.content, { side: 'bottom', sideOffset: 8, collisionPadding: 8 }) as PopoverContentProps)
 const contentEvents = computed(() => {
   if (!props.dismissible) {
-    return {
-      pointerDownOutside: (e: Event) => e.preventDefault(),
-      interactOutside: (e: Event) => e.preventDefault(),
-      escapeKeyDown: (e: Event) => e.preventDefault()
-    }
+    const events = ['pointerDownOutside', 'interactOutside', 'escapeKeyDown'] as const
+    type EventType = typeof events[number]
+    return events.reduce((acc, curr) => {
+      acc[curr] = (e: Event) => {
+        e.preventDefault()
+        emits('close:prevent')
+      }
+      return acc
+    }, {} as Record<EventType, (e: Event) => void>)
   }
 
   return {}

src/runtime/components/Slideover.vue

@@ -55,6 +55,7 @@ export interface SlideoverProps extends DialogRootProps {
 
 export interface SlideoverEmits extends DialogRootEmits {
   'after:leave': []
+  'close:prevent': []
 }
 
 export interface SlideoverSlots {
@@ -98,20 +99,22 @@ const rootProps = useForwardPropsEmits(reactivePick(props, 'open', 'defaultOpen'
 const portalProps = usePortal(toRef(() => props.portal))
 const contentProps = toRef(() => props.content)
 const contentEvents = computed(() => {
-  const events = {
+  const defaultEvents = {
     closeAutoFocus: (e: Event) => e.preventDefault()
   }
-
   if (!props.dismissible) {
-    return {
-      pointerDownOutside: (e: Event) => e.preventDefault(),
-      interactOutside: (e: Event) => e.preventDefault(),
-      escapeKeyDown: (e: Event) => e.preventDefault(),
-      ...events
-    }
+    const events = ['pointerDownOutside', 'interactOutside', 'escapeKeyDown', 'closeAutoFocus'] as const
+    type EventType = typeof events[number]
+    return events.reduce((acc, curr) => {
+      acc[curr] = (e: Event) => {
+        e.preventDefault()
+        emits('close:prevent')
+      }
+      return acc
+    }, {} as Record<EventType, (e: Event) => void>)
   }
 
-  return events
+  return defaultEvents
 })
 
 const ui = computed(() => tv({ extend: tv(theme), ...(appConfig.ui?.slideover || {}) })({