Add a search to the showcase

A search app bar looks through every section, example and component,
opens the section, or the example at its anchor on its page, and is
reached from anywhere with / or Ctrl+K. Section pages now carry their
own heading.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V9NnLxnPp8vaaurb3Z1MFy

tests/Browser/ShowcaseTest.php

@@ -19,3 +19,37 @@ it('moves between sections through the rail and the next-section link, keeping t
         ->assertScript("location.pathname.endsWith('/material/menus')")
         ->assertNoJavaScriptErrors();
 });
+
+it('finds a component from anywhere and opens its section', function () {
+    $page = visit('/material/buttons')->waitForEvent('networkidle')
+        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'");
+
+    $page->keys('#content', '/')
+        ->assertScript("document.activeElement.id === 'showcase-search'");
+
+    $page->type('#showcase-search', 'datepicker')
+        ->assertSeeIn('[data-search-view]', '<x-datepicker>');
+
+    $page->keys('#showcase-search', 'Enter')
+        ->assertScript("location.pathname.endsWith('/material/pickers')")
+        ->assertScript("document.title === 'Date pickers · Livewire Material'");
+});
+
+it('opens an example on another page at the example', function () {
+    $page = visit('/material')->waitForEvent('networkidle')
+        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'");
+
+    $page->click('#showcase-search')
+        ->type('#showcase-search', 'split button')
+        ->click('[data-showcase-result]:has-text("Example")')
+        ->assertScript("location.pathname.endsWith('/material/buttons') && location.hash.startsWith('#example-')")
+        ->assertScript('(() => { const box = document.getElementById(decodeURIComponent(location.hash.slice(1))).getBoundingClientRect(); return box.top >= 0 && box.top < innerHeight; })()');
+});
+
+it('says so when nothing matches', function () {
+    visit('/material')->waitForEvent('networkidle')
+        ->assertScript("document.readyState === 'complete' && typeof window.Alpine !== 'undefined' && typeof window.Livewire !== 'undefined'")
+        ->click('#showcase-search')
+        ->type('#showcase-search', 'zzzz')
+        ->assertSeeIn('[data-search-view]', 'Nothing matches');
+});

tests/Feature/ShowcaseTest.php

@@ -45,6 +45,26 @@ it('gives every section a page of its own, linked from the overview and the rail
     $this->get('/material/not-a-section')->assertNotFound();
 });
 
+it('indexes every section, example and component for the search, each linking to a place that exists', function () {
+    $index = collect($this->getJson('/material/search.json')->assertOk()->json());
+
+    expect($index->where('kind', 'Section')->pluck('title')->all())
+        ->toBe(collect(Sections::all())->pluck('title')->all())
+        ->and($index->where('kind', 'Component')->pluck('title')->all())
+        ->toContain('<x-datepicker>', '<x-button>', '<x-app-shell>')
+        ->and($index->firstWhere('title', '<x-datepicker>')['url'])->toBe('/material/pickers');
+
+    $index->where('kind', 'Example')
+        ->groupBy(fn (array $entry): string => strtok($entry['url'], '#'))
+        ->each(function ($examples, string $page): void {
+            $html = $this->withoutVite()->get($page)->assertOk()->getContent();
+
+            foreach ($examples as $example) {
+                expect($html)->toContain('id="'.substr($example['url'], strpos($example['url'], '#') + 1).'"');
+            }
+        });
+});
+
 it('does not mount the showcase when disabled', function () {
     rebootWithShowcase(false);