1 files changed, 16 insertions, 18 deletions

diff --git a/vendor/twbs/bootstrap/js/src/offcanvas.js b/vendor/twbs/bootstrap/js/src/offcanvas.js
index 88eb8c997..57bf2e897 100644
--- a/vendor/twbs/bootstrap/js/src/offcanvas.js
+++ b/vendor/twbs/bootstrap/js/src/offcanvas.js
@@ -1,6 +1,6 @@
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v5.0.2): offcanvas.js
+ * Bootstrap (v5.1.1): offcanvas.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,6 +18,8 @@ import BaseComponent from './base-component'
 import SelectorEngine from './dom/selector-engine'
 import Manipulator from './dom/manipulator'
 import Backdrop from './util/backdrop'
+import FocusTrap from './util/focustrap'
+import { enableDismissTrigger } from './util/component-functions'
 
 /**
  * ------------------------------------------------------------------------
@@ -45,18 +47,16 @@ const DefaultType = {
 }
 
 const CLASS_NAME_SHOW = 'show'
+const CLASS_NAME_BACKDROP = 'offcanvas-backdrop'
 const OPEN_SELECTOR = '.offcanvas.show'
 
 const EVENT_SHOW = `show${EVENT_KEY}`
 const EVENT_SHOWN = `shown${EVENT_KEY}`
 const EVENT_HIDE = `hide${EVENT_KEY}`
 const EVENT_HIDDEN = `hidden${EVENT_KEY}`
-const EVENT_FOCUSIN = `focusin${EVENT_KEY}`
 const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`
-const EVENT_CLICK_DISMISS = `click.dismiss${EVENT_KEY}`
 const EVENT_KEYDOWN_DISMISS = `keydown.dismiss${EVENT_KEY}`
 
-const SELECTOR_DATA_DISMISS = '[data-bs-dismiss="offcanvas"]'
 const SELECTOR_DATA_TOGGLE = '[data-bs-toggle="offcanvas"]'
 
 /**
@@ -72,6 +72,7 @@ class Offcanvas extends BaseComponent {
     this._config = this._getConfig(config)
     this._isShown = false
     this._backdrop = this._initializeBackDrop()
+    this._focustrap = this._initializeFocusTrap()
     this._addEventListeners()
   }
 
@@ -109,7 +110,6 @@ class Offcanvas extends BaseComponent {
 
     if (!this._config.scroll) {
       new ScrollBarHelper().hide()
-      this._enforceFocusOnElement(this._element)
     }
 
     this._element.removeAttribute('aria-hidden')
@@ -118,6 +118,10 @@ class Offcanvas extends BaseComponent {
     this._element.classList.add(CLASS_NAME_SHOW)
 
     const completeCallBack = () => {
+      if (!this._config.scroll) {
+        this._focustrap.activate()
+      }
+
       EventHandler.trigger(this._element, EVENT_SHOWN, { relatedTarget })
     }
 
@@ -135,7 +139,7 @@ class Offcanvas extends BaseComponent {
       return
     }
 
-    EventHandler.off(document, EVENT_FOCUSIN)
+    this._focustrap.deactivate()
     this._element.blur()
     this._isShown = false
     this._element.classList.remove(CLASS_NAME_SHOW)
@@ -159,8 +163,8 @@ class Offcanvas extends BaseComponent {
 
   dispose() {
     this._backdrop.dispose()
+    this._focustrap.deactivate()
     super.dispose()
-    EventHandler.off(document, EVENT_FOCUSIN)
   }
 
   // Private
@@ -177,6 +181,7 @@ class Offcanvas extends BaseComponent {
 
   _initializeBackDrop() {
     return new Backdrop({
+      className: CLASS_NAME_BACKDROP,
       isVisible: this._config.backdrop,
       isAnimated: true,
       rootElement: this._element.parentNode,
@@ -184,21 +189,13 @@ class Offcanvas extends BaseComponent {
     })
   }
 
-  _enforceFocusOnElement(element) {
-    EventHandler.off(document, EVENT_FOCUSIN) // guard against infinite focus loop
-    EventHandler.on(document, EVENT_FOCUSIN, event => {
-      if (document !== event.target &&
-        element !== event.target &&
-        !element.contains(event.target)) {
-        element.focus()
-      }
+  _initializeFocusTrap() {
+    return new FocusTrap({
+      trapElement: this._element
     })
-    element.focus()
   }
 
   _addEventListeners() {
-    EventHandler.on(this._element, EVENT_CLICK_DISMISS, SELECTOR_DATA_DISMISS, () => this.hide())
-
     EventHandler.on(this._element, EVENT_KEYDOWN_DISMISS, event => {
       if (this._config.keyboard && event.key === ESCAPE_KEY) {
         this.hide()
@@ -263,6 +260,7 @@ EventHandler.on(window, EVENT_LOAD_DATA_API, () =>
   SelectorEngine.find(OPEN_SELECTOR).forEach(el => Offcanvas.getOrCreateInstance(el).show())
 )
 
+enableDismissTrigger(Offcanvas)
 /**
  * ------------------------------------------------------------------------
  * jQuery