initial commit with full project

src/lib/utils/keyboard.ts

@@ -0,0 +1,51 @@
+type ShortcutHandler = {
+  key: string;
+  ctrl?: boolean;
+  shift?: boolean;
+  handler: () => void;
+  when?: () => boolean;
+};
+
+let registered = false;
+let shortcuts: ShortcutHandler[] = [];
+let cleanup: (() => void) | null = null;
+
+export function setShortcuts(handlers: ShortcutHandler[]) {
+  shortcuts = handlers;
+}
+
+export function registerShortcuts() {
+  if (registered) return;
+  registered = true;
+
+  const onKeyDown = (e: KeyboardEvent) => {
+    // skip when typing in inputs
+    const tag = (e.target as HTMLElement)?.tagName;
+    if (tag === 'INPUT' || tag === 'TEXTAREA' || tag === 'SELECT') return;
+
+    for (const s of shortcuts) {
+      const ctrlMatch = s.ctrl ? (e.ctrlKey || e.metaKey) : !(e.ctrlKey || e.metaKey);
+      const shiftMatch = s.shift ? e.shiftKey : !e.shiftKey;
+      const keyMatch = e.key === s.key || e.code === s.key;
+
+      if (keyMatch && ctrlMatch && shiftMatch) {
+        if (s.when && !s.when()) continue;
+        e.preventDefault();
+        s.handler();
+        return;
+      }
+    }
+  };
+
+  window.addEventListener('keydown', onKeyDown);
+  cleanup = () => {
+    window.removeEventListener('keydown', onKeyDown);
+    registered = false;
+  };
+}
+
+export function unregisterShortcuts() {
+  cleanup?.();
+  cleanup = null;
+  shortcuts = [];
+}