feat(keyboard shortcut): Vimium-Style Keybind Update

Extensions/keyboardShortcut.js

@@ -28,18 +28,24 @@
 				Spicetify.CosmosAsync.post("sp://desktop/v1/shutdown"),
 		},
 
-		// Rotate through sidebar items using Ctrl+Tab and Ctrl+Shift+Tab
+		// Rotate through sidebar items using Ctrl+Tab and Ctrl+Shift+Tab or Shift+J and Shift+K
 		"ctrl+tab": { callback: () => rotateSidebar(1) },
 		"ctrl+shift+tab": { callback: () => rotateSidebar(-1) },
-
+		"shift+j": { callback: () => rotateSidebar(1) },
+		"shift+k": { callback: () => rotateSidebar(-1) },
+
 		// Focus on the app content before scrolling using Shift+PageUp and Shift+PageDown
 		"shift+pageup": { callback: () => focusOnApp() },
 		"shift+pagedown": { callback: () => focusOnApp() },
 
 		// Scroll actions using 'j' and 'k' keys
 		j: { callback: () => createScrollCallback(SCROLL_STEP) },
 		k: { callback: () => createScrollCallback(-SCROLL_STEP) },
-
+
+		// Scroll half-page using 'u' and 'd' keys
+		d: { callback: () => scrollHalfPage(1) },
+		u: { callback: () => scrollHalfPage(-1) },
+
 		// Scroll to the top ('gg') or bottom ('Shift+g') of the page
 		"g g": { callback: () => scrollToPosition(0) },
 		"shift+g": { callback: () => scrollToPosition(1) },
@@ -127,7 +133,17 @@
 		const app = focusOnApp();
 		app.scroll(0, position === 0 ? 0 : app.scrollHeight);
 	}
-
+
+	function scrollHalfPage(direction /* 1 | -1 */) {
+  		const app = focusOnApp();
+  		if (!app) return;
+  		const delta     = Math.floor(app.clientHeight / 2) * direction;
+  		const targetTop = Math.max(0,
+    		Math.min(app.scrollTop + delta, app.scrollHeight)
+  		);
+  		app.scroll(0, targetTop);
+	}
+
 	/**
 	 * @returns {number | undefined}
 	 * @param {NodeListOf<Element>} allItems