first version

kirby/config/fields/text.php

@@ -0,0 +1,103 @@
+<?php
+
+use Kirby\Exception\InvalidArgumentException;
+use Kirby\Toolkit\I18n;
+use Kirby\Toolkit\Str;
+
+return [
+    'props' => [
+
+        /**
+         * The field value will be converted with the selected converter before the value gets saved. Available converters: lower, upper, ucfirst, slug
+         */
+        'converter' => function ($value = null) {
+            if ($value !== null && in_array($value, array_keys($this->converters())) === false) {
+                throw new InvalidArgumentException([
+                    'key'  => 'field.converter.invalid',
+                    'data' => ['converter' => $value]
+                ]);
+            }
+
+            return $value;
+        },
+
+        /**
+         * Shows or hides the character counter in the top right corner
+         */
+        'counter' => function (bool $counter = true) {
+            return $counter;
+        },
+
+        /**
+         * Maximum number of allowed characters
+         */
+        'maxlength' => function (int $maxlength = null) {
+            return $maxlength;
+        },
+
+        /**
+         * Minimum number of required characters
+         */
+        'minlength' => function (int $minlength = null) {
+            return $minlength;
+        },
+
+        /**
+         * A regular expression, which will be used to validate the input
+         */
+        'pattern' => function (string $pattern = null) {
+            return $pattern;
+        },
+
+        /**
+         * If false, spellcheck will be switched off
+         */
+        'spellcheck' => function (bool $spellcheck = false) {
+            return $spellcheck;
+        },
+    ],
+    'computed' => [
+        'default' => function () {
+            return $this->convert($this->default);
+        },
+        'value' => function () {
+            return (string)$this->convert($this->value);
+        }
+    ],
+    'methods' => [
+        'convert' => function ($value) {
+            if ($this->converter() === null) {
+                return $value;
+            }
+
+            $value     = trim($value);
+            $converter = $this->converters()[$this->converter()];
+
+            if (is_array($value) === true) {
+                return array_map($converter, $value);
+            }
+
+            return call_user_func($converter, $value);
+        },
+        'converters' => function (): array {
+            return [
+                'lower' => function ($value) {
+                    return Str::lower($value);
+                },
+                'slug' => function ($value) {
+                    return Str::slug($value);
+                },
+                'ucfirst' => function ($value) {
+                    return Str::ucfirst($value);
+                },
+                'upper' => function ($value) {
+                    return Str::upper($value);
+                },
+            ];
+        },
+    ],
+    'validations' => [
+        'minlength',
+        'maxlength'
+    ]
+];