add navigator script

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

astro.config.mjs

@@ -123,6 +123,12 @@ export default defineConfig({
       editLink: {
         baseUrl: 'https://github.com/tauri-apps/tauri-docs/edit/starlight',
       },
+      head: [
+        {
+          tag: 'script',
+          attrs: { src: '/javascript/navigator.js' },
+        },
+      ],
       customCss: ['./src/styles/custom.css'],
       sidebar: [
         {

public/javascript/navigator.js

@@ -0,0 +1,27 @@
+(function chapterNavigation() {
+  document.addEventListener('keydown', function (e) {
+    if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) {
+      return;
+    }
+    if (window.search && window.search.hasFocus()) {
+      return;
+    }
+
+    switch (e.key) {
+      case 'ArrowRight':
+        e.preventDefault();
+        var nextButton = document.querySelector('a[rel="next"]');
+        if (nextButton) {
+          window.location.href = nextButton.href;
+        }
+        break;
+      case 'ArrowLeft':
+        e.preventDefault();
+        var previousButton = document.querySelector('a[rel="prev"]');
+        if (previousButton) {
+          window.location.href = previousButton.href;
+        }
+        break;
+    }
+  });
+})();