rustdoc: fix help menu popover toggling

Author: notriddle

src/librustdoc/html/static/js/main.js

@@ -926,6 +926,7 @@ function loadCss(cssFileName) {
     function showHelp() {
         const menu = getHelpMenu(true);
         if (menu.style.display === "none") {
+            window.hidePopoverMenus();
             menu.style.display = "";
         }
     }
@@ -939,6 +940,8 @@ function loadCss(cssFileName) {
         const shouldShowHelp = menu.style.display === "none";
         if (shouldShowHelp) {
             showHelp();
+        } else {
+            window.hidePopoverMenus();
         }
     });
 

src/test/rustdoc-gui/pocket-menu.goml

@@ -24,6 +24,11 @@ click: "#help-button"
 assert-css: ("#help-button .popover", {"display": "block"})
 assert-css: ("#settings-menu .popover", {"display": "none"})
 
+// Now verify that clicking the help menu again closes it.
+click: "#help-button"
+assert-css: ("#help-button .popover", {"display": "none"})
+assert-css: ("#settings-menu .popover", {"display": "none"})
+
 // We check the borders color now:
 
 // Ayu theme