Fix #783 Don't show button if --quickjump not present

1 files changed, 14 insertions, 9 deletions

diff --git a/haddock-api/resources/html/js-src/quick-jump.tsx b/haddock-api/resources/html/js-src/quick-jump.tsx
index 20ff8e15..ef02cbd2 100644
--- a/haddock-api/resources/html/js-src/quick-jump.tsx
+++ b/haddock-api/resources/html/js-src/quick-jump.tsx
@@ -45,11 +45,12 @@ class PageMenuButton extends Component<any, any> {
 
 }
 
-function addSearchPageMenuButton(action: () => void) {
-  const pageMenu = document.querySelector('#page-menu') as HTMLUListElement;
-  const dummy = document.createElement('li');
-  pageMenu.insertBefore(dummy, pageMenu.firstChild);
-  preact.render(<PageMenuButton onClick={action} title="Quick Jump" />, pageMenu, dummy);
+function addSearchPageMenuButton(quickJumpButton: HTMLLIElement) {
+  const showHide = function(action: () => void) {
+    const pageMenu = document.querySelector('#page-menu') as HTMLUListElement;
+    preact.render(<PageMenuButton onClick={action} title="Quick Jump" />, pageMenu, quickJumpButton);
+  };
+  return showHide;
 }
 
 // -------------------------------------------------------------------------- //
@@ -410,10 +411,14 @@ function NoResultsMsg(props: { searchString: string }) {
 }
 
 export function init(docBaseUrl?: string, showHide?: (action: () => void) => void) {
-  preact.render(
-    <QuickJump baseUrl={docBaseUrl || "."} showHideTrigger={showHide || addSearchPageMenuButton} />,
-    document.body
-  );
+  // A <li> element with this id should exist if --quickjump was set
+  const quickJumpButton = document.getElementById('quick-jump-button');
+  if (quickJumpButton)
+    preact.render(
+      <QuickJump baseUrl={docBaseUrl || "."} showHideTrigger={showHide ||
+        addSearchPageMenuButton(quickJumpButton as HTMLLIElement)} />,
+      document.body
+    );
 }
 
 // export to global object