From be8de118db913711eb72ae5187d26e54a0055727 Mon Sep 17 00:00:00 2001
From: 简律纯 <i@jyunko.cn>
Date: Fri, 15 Dec 2023 09:11:47 +0800
Subject: refactor(docs): optmst `docs` dir & `deps`

---
 .../assets/javascripts/patches/scrolllock/index.ts | 89 ++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 docs/src/templates/assets/javascripts/patches/scrolllock/index.ts

(limited to 'docs/src/templates/assets/javascripts/patches/scrolllock')

diff --git a/docs/src/templates/assets/javascripts/patches/scrolllock/index.ts b/docs/src/templates/assets/javascripts/patches/scrolllock/index.ts
new file mode 100644
index 00000000..4ec3e103
--- /dev/null
+++ b/docs/src/templates/assets/javascripts/patches/scrolllock/index.ts
@@ -0,0 +1,89 @@
+/*
+ * 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,
+  combineLatest,
+  delay,
+  map,
+  of,
+  switchMap,
+  withLatestFrom
+} from "rxjs"
+
+import {
+  Viewport,
+  watchToggle
+} from "~/browser"
+
+/* ----------------------------------------------------------------------------
+ * Helper types
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Patch options
+ */
+interface PatchOptions {
+  viewport$: Observable<Viewport>      /* Viewport observable */
+  tablet$: Observable<boolean>         /* Media tablet observable */
+}
+
+/* ----------------------------------------------------------------------------
+ * Functions
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Patch the document body to lock when search is open
+ *
+ * For mobile and tablet viewports, the search is rendered full screen, which
+ * leads to scroll leaking when at the top or bottom of the search result. This
+ * function locks the body when the search is in full screen mode, and restores
+ * the scroll position when leaving.
+ *
+ * @param options - Options
+ */
+export function patchScrolllock(
+  { viewport$, tablet$ }: PatchOptions
+): void {
+  combineLatest([watchToggle("search"), tablet$])
+    .pipe(
+      map(([active, tablet]) => active && !tablet),
+      switchMap(active => of(active)
+        .pipe(
+          delay(active ? 400 : 100)
+        )
+      ),
+      withLatestFrom(viewport$)
+    )
+      .subscribe(([active, { offset: { y }}]) => {
+        if (active) {
+          document.body.setAttribute("data-md-scrolllock", "")
+          document.body.style.top = `-${y}px`
+        } else {
+          const value = -1 * parseInt(document.body.style.top, 10)
+          document.body.removeAttribute("data-md-scrolllock")
+          document.body.style.top = ""
+          if (value)
+            window.scrollTo(0, value)
+        }
+      })
+}
-- 
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