UX: when on full page search header search should not pop open

fix `/` handling in full page search to highlight search term

app/assets/javascripts/discourse/components/header-dropdown.js.es6

@@ -22,7 +22,11 @@ export default Ember.Component.extend({
       if (this.siteSettings.login_required && !this.currentUser) {
         this.sendAction('loginAction');
       } else {
-        this.toggleProperty('toggleVisible');
+        if (this.get('action')) {
+          this.sendAction('action');
+        } else {
+          this.toggleProperty('toggleVisible');
+        }
       }
       this.appEvents.trigger('dropdowns:closeAll');
     }

app/assets/javascripts/discourse/controllers/header.js.es6

@@ -20,6 +20,15 @@ const HeaderController = Ember.Controller.extend({
 
 
   actions: {
+    toggleSearch() {
+      // there may be a cleaner way, but this is so trivial code wise
+      const $fullpageSearch = $('input.full-page-search');
+      if ($fullpageSearch.length === 1) {
+        $fullpageSearch.focus().select();
+      } else {
+        this.toggleProperty('searchVisible');
+      }
+    },
     showUserMenu() {
       if (!this.get('userMenuVisible')) {
         this.appEvents.trigger('dropdowns:closeAll');

app/assets/javascripts/discourse/lib/keyboard-shortcuts.js.es6

@@ -177,7 +177,8 @@ export default {
   },
 
   showSearch() {
-    this.container.lookup('controller:header').send('toggleMenuPanel', 'searchVisible');
+    this.container.lookup('controller:header').send('toggleSearch');
+    return false;
   },
 
   toggleHamburgerMenu() {

app/assets/javascripts/discourse/templates/full-page-search.hbs

@@ -1,5 +1,5 @@
 <div class="search row clearfix">
-  {{search-text-field value=searchTerm class="input-xxlarge search no-blur" action="search" hasAutofocus=hasAutofocus}}
+  {{search-text-field value=searchTerm class="full-page-search input-xxlarge search no-blur" action="search" hasAutofocus=hasAutofocus}}
   {{d-button action="search" icon="search" class="btn-primary" disabled=searchButtonDisabled}}
   {{#if canBulkSelect}}
     {{#if model.posts}}

app/assets/javascripts/discourse/templates/header.hbs

@@ -17,6 +17,7 @@
 
         {{#header-dropdown iconId="search-button"
                            icon="search"
+                           action="toggleSearch"
                            toggleVisible=searchVisible
                            mobileAction="fullPageSearch"
                            loginAction="showLogin"