[ruby/rdoc] Add keydown event listener to focus on search field

https://github.com/ruby/rdoc/commit/db62e47df2

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/rdoc/generator/template/darkfish/js/darkfish.js b/lib/rdoc/generator/template/darkfish/js/darkfish.js
index d0c9467751..19a85c54e1 100644
--- a/lib/rdoc/generator/template/darkfish/js/darkfish.js
+++ b/lib/rdoc/generator/template/darkfish/js/darkfish.js
@@ -78,7 +78,20 @@ function hookSearch() {
   search.scrollIntoView = search.scrollInWindow;
 };
 
+function hookFocus() {
+  document.addEventListener("keydown", (event) => {
+    if (document.activeElement.tagName === 'INPUT') {
+      return;
+    }
+    if (event.key === "/") {
+      event.preventDefault();
+      document.querySelector('#search-field').focus();
+    }
+  });
+}
+
 document.addEventListener('DOMContentLoaded', function() {
   hookSourceViews();
   hookSearch();
+  hookFocus();
 });