Read on-trailing-press on list items

resources/boost/guidelines/core.blade.php

@@ -188,7 +188,7 @@
 - Use `a11y-hint` sparingly, for supplementary guidance the label doesn't
   cover ("Double-tap to reorder"). Never repeat the label in the hint.
 - List items with a trailing icon button take `trailing-a11y-label` to label
-  that button separately from the row.
+  that button separately from the row, and `on-trailing-press` for its handler.
 - Text scales with the user's system font size on both platforms
   automatically — don't hardcode layouts that break at larger type sizes.
 
@@ -197,6 +197,7 @@
 <native:button icon="trash" a11y-label="Delete draft" a11y-hint="Deletes the draft permanently" @tap="deleteDraft" />
 <native:icon name="checkmark.seal" a11y-label="Verified" />
 <native:list-item headline="Team meeting" trailingIconButton="ellipsis" trailing-a11y-label="More options" />
+<native:list-item headline="Buy milk" trailingIconButton="trash" trailing-a11y-label="Delete" on-trailing-press="deleteTodo({{ $todo->id }})" />
 </code-snippet>
 @endverbatim
 

src/Elements/ListItem.php

@@ -200,6 +200,12 @@ public function applyAttributes(array $attrs): void
             $this->onTrailingChange($attrs['on-trailing-change'] ?? $attrs['onTrailingChange']);
         }
 
+        // Trailing icon button press, same spellings as the change
+        // callbacks above.
+        if (isset($attrs['on-trailing-press']) || isset($attrs['onTrailingPress'])) {
+            $this->onTrailingPress($attrs['on-trailing-press'] ?? $attrs['onTrailingPress']);
+        }
+
         // Swipe actions — new structured multi-action API. Each entry
         // is `['method' => …, 'label' => …, 'icon' => …, 'tint' => …,
         // 'role' => …]`. Both arrays support 1+ actions.

tests/ListItemTrailingPressTest.php

@@ -0,0 +1,75 @@
+<?php
+
+use Native\Mobile\Edge\CallbackRegistry;
+use Native\Mobile\Edge\ElementRegistry;
+use Native\Mobile\Edge\NativeElementCollector;
+use Native\Mobile\Edge\NativeTagPrecompiler;
+use Native\Mobile\UI\Elements\ListItem;
+
+/**
+ * A trailing icon button's press handler set from Blade has to reach the
+ * wire as `on_trailing_press`, which both renderers already fire.
+ */
+beforeEach(function () {
+    NativeElementCollector::reset();
+    ElementRegistry::reset();
+    ElementRegistry::register('list_item', ListItem::class);
+});
+
+afterEach(function () {
+    NativeElementCollector::reset();
+    ElementRegistry::reset();
+});
+
+function trailingPressTree(array $attrs, CallbackRegistry $registry): array
+{
+    NativeElementCollector::leaf('list_item', ['headline' => 'Buy milk', 'trailingIconButton' => 'trash'] + $attrs);
+
+    return NativeElementCollector::collect()->toArray($registry);
+}
+
+it('registers the trailing press handler from each Blade spelling', function (string $attr) {
+    $registry = new CallbackRegistry;
+    $tree = trailingPressTree([$attr => 'deleteTodo(7)'], $registry);
+
+    expect($tree['props']['trailing_type'])->toBe('icon_button')
+        ->and($tree['props']['on_trailing_press'])->toBeInt()
+        ->and($registry->resolve($tree['props']['on_trailing_press']))
+        ->toBe(['method' => 'deleteTodo', 'args' => [7]]);
+})->with(['on-trailing-press', 'onTrailingPress']);
+
+it('compiles on-trailing-press with a bound argument from a Blade tag', function () {
+    $wasActive = NativeTagPrecompiler::setActive(true);
+
+    try {
+        $php = (new NativeTagPrecompiler)(
+            '<native:list-item headline="Buy milk" trailingIconButton="trash" on-trailing-press="deleteTodo({{ $id }})" />'
+        );
+    } finally {
+        NativeTagPrecompiler::setActive($wasActive);
+    }
+
+    (function (int $id) use ($php) {
+        eval('?>'.$php);
+    })(7);
+
+    $registry = new CallbackRegistry;
+    $tree = NativeElementCollector::collect()->toArray($registry);
+
+    expect($registry->resolve($tree['props']['on_trailing_press']))
+        ->toBe(['method' => 'deleteTodo', 'args' => [7]]);
+});
+
+it('sends no trailing press callback when none is set', function () {
+    $tree = trailingPressTree([], new CallbackRegistry);
+
+    expect($tree['props'])->not->toHaveKey('on_trailing_press');
+});
+
+it('keeps the fluent onTrailingPress builder working', function () {
+    $registry = new CallbackRegistry;
+    $props = ListItem::make('Buy milk')->trailingIconButton('trash')->onTrailingPress('deleteTodo')
+        ->toArray($registry)['props'];
+
+    expect($registry->resolve($props['on_trailing_press']))->toBe(['method' => 'deleteTodo', 'args' => []]);
+});