From 991fd7a6d67ee017c57beaaa21fc31c4bee7944d Mon Sep 17 00:00:00 2001
From: 简律纯 <i@jyunko.cn>
Date: Sat, 7 Oct 2023 06:48:07 +0800
Subject: feat(version): versions

---
 .../assets/javascripts/components/tabs/index.ts    | 144 +++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 src/templates/assets/javascripts/components/tabs/index.ts

(limited to 'src/templates/assets/javascripts/components/tabs')

diff --git a/src/templates/assets/javascripts/components/tabs/index.ts b/src/templates/assets/javascripts/components/tabs/index.ts
new file mode 100644
index 00000000..1e69df28
--- /dev/null
+++ b/src/templates/assets/javascripts/components/tabs/index.ts
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2016-2023 Martin Donath <martin.donath@squidfunk.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+import {
+  Observable,
+  Subject,
+  defer,
+  distinctUntilKeyChanged,
+  finalize,
+  map,
+  of,
+  switchMap,
+  tap
+} from "rxjs"
+
+import { feature } from "~/_"
+import {
+  Viewport,
+  watchElementSize,
+  watchViewportAt
+} from "~/browser"
+
+import { Component } from "../_"
+import { Header } from "../header"
+
+/* ----------------------------------------------------------------------------
+ * Types
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Navigation tabs
+ */
+export interface Tabs {
+  hidden: boolean                      /* Navigation tabs are hidden */
+}
+
+/* ----------------------------------------------------------------------------
+ * Helper types
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Watch options
+ */
+interface WatchOptions {
+  viewport$: Observable<Viewport>      /* Viewport observable */
+  header$: Observable<Header>          /* Header observable */
+}
+
+/**
+ * Mount options
+ */
+interface MountOptions {
+  viewport$: Observable<Viewport>      /* Viewport observable */
+  header$: Observable<Header>          /* Header observable */
+}
+
+/* ----------------------------------------------------------------------------
+ * Functions
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Watch navigation tabs
+ *
+ * @param el - Navigation tabs element
+ * @param options - Options
+ *
+ * @returns Navigation tabs observable
+ */
+export function watchTabs(
+  el: HTMLElement, { viewport$, header$ }: WatchOptions
+): Observable<Tabs> {
+  return watchElementSize(document.body)
+    .pipe(
+      switchMap(() => watchViewportAt(el, { header$, viewport$ })),
+      map(({ offset: { y } }) => {
+        return {
+          hidden: y >= 10
+        }
+      }),
+      distinctUntilKeyChanged("hidden")
+    )
+}
+
+/**
+ * Mount navigation tabs
+ *
+ * This function hides the navigation tabs when scrolling past the threshold
+ * and makes them reappear in a nice CSS animation when scrolling back up.
+ *
+ * @param el - Navigation tabs element
+ * @param options - Options
+ *
+ * @returns Navigation tabs component observable
+ */
+export function mountTabs(
+  el: HTMLElement, options: MountOptions
+): Observable<Component<Tabs>> {
+  return defer(() => {
+    const push$ = new Subject<Tabs>()
+    push$.subscribe({
+
+      /* Handle emission */
+      next({ hidden }) {
+        el.hidden = hidden
+      },
+
+      /* Handle complete */
+      complete() {
+        el.hidden = false
+      }
+    })
+
+    /* Create and return component */
+    return (
+      feature("navigation.tabs.sticky")
+        ? of({ hidden: false })
+        : watchTabs(el, options)
+    )
+      .pipe(
+        tap(state => push$.next(state)),
+        finalize(() => push$.complete()),
+        map(state => ({ ref: el, ...state }))
+      )
+  })
+}
-- 
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