first-commit

node_modules/vitepress/dist/client/theme-default/composables/flyout.js

@@ -0,0 +1,41 @@
+import { onUnmounted, readonly, ref, watch } from 'vue';
+import { inBrowser } from '../../shared';
+export const focusedElement = ref();
+let active = false;
+let listeners = 0;
+export function useFlyout(options) {
+    const focus = ref(false);
+    if (inBrowser) {
+        !active && activateFocusTracking();
+        listeners++;
+        const unwatch = watch(focusedElement, (el) => {
+            if (el === options.el.value || options.el.value?.contains(el)) {
+                focus.value = true;
+                options.onFocus?.();
+            }
+            else {
+                focus.value = false;
+                options.onBlur?.();
+            }
+        });
+        onUnmounted(() => {
+            unwatch();
+            listeners--;
+            if (!listeners) {
+                deactivateFocusTracking();
+            }
+        });
+    }
+    return readonly(focus);
+}
+function activateFocusTracking() {
+    document.addEventListener('focusin', handleFocusIn);
+    active = true;
+    focusedElement.value = document.activeElement;
+}
+function deactivateFocusTracking() {
+    document.removeEventListener('focusin', handleFocusIn);
+}
+function handleFocusIn() {
+    focusedElement.value = document.activeElement;
+}