first version

kirby/config/fields/time.php

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+<?php
+
+return [
+    'props' => [
+        /**
+         * Unset inherited props
+         */
+        'placeholder' => null,
+
+        /**
+         * Sets the default time when a new Page/File/User is created
+         */
+        'default' => function ($default = null) {
+            return $default;
+        },
+        /**
+         * Changes the clock icon
+         */
+        'icon' => function (string $icon = 'clock') {
+            return $icon;
+        },
+        /**
+         * 12 or 24 hour notation. If 12, an AM/PM selector will be shown.
+         */
+        'notation' => function (int $value = 24) {
+            return $value === 24 ? 24 : 12;
+        },
+        /**
+         * The interval between minutes in the minutes select dropdown.
+         */
+        'step' => function (int $step = 5) {
+            return $step;
+        },
+        'value' => function ($value = null) {
+            return $value;
+        }
+    ],
+    'computed' => [
+        'default' => function () {
+            return $this->toTime($this->default);
+        },
+        'format' => function () {
+            return $this->notation === 24 ? 'H:i' : 'h:i a';
+        },
+        'value' => function () {
+            return $this->toTime($this->value);
+        }
+    ],
+    'methods' => [
+        'toTime' => function ($value) {
+            if ($timestamp = timestamp($value, $this->step)) {
+                return date('H:i', $timestamp);
+            }
+
+            return null;
+        }
+    ],
+    'save' => function ($value): string {
+        if ($timestamp = strtotime($value)) {
+            return date($this->format, $timestamp);
+        }
+
+        return '';
+    },
+    'validations' => [
+        'time',
+    ]
+];