From bce30e9d044729bfa9d9b1156522ced0fa662d32 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pavel=20Konvi=C4=8Dka?= <pavel.konvicka@gmail.com>
Date: Mon, 29 Jun 2026 10:48:32 +0200
Subject: [PATCH] =?UTF-8?q?feat:=20form=20prvek=20addPasswordReveal=20pro?=
 =?UTF-8?q?=20maskovan=C3=BD=20text=20s=20odkryt=C3=ADm?=
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---
 src/Controls/PasswordRevealInput.php | 118 +++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/Controls/PasswordRevealInput.php

diff --git a/src/Controls/PasswordRevealInput.php b/src/Controls/PasswordRevealInput.php
new file mode 100644
index 0000000..9e79d36
--- /dev/null
+++ b/src/Controls/PasswordRevealInput.php
@@ -0,0 +1,118 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ADT\Forms\Controls;
+
+use Nette\Forms\Container;
+use Nette\Forms\Form;
+use Nette\Forms\Controls\TextInput;
+use Nette\Utils\Html;
+
+class PasswordRevealInput extends TextInput
+{
+	public const string INPUT_CLASS = 'toggle-password-input';
+	public const string TOGGLE_CLASS = 'toggle-password-reveal';
+
+	private static bool $scriptRendered = false;
+
+	public function __construct($label = null, ?int $maxLength = null)
+	{
+		parent::__construct($label, $maxLength);
+
+		$this->setHtmlType('password');
+		$this->getControlPrototype()->appendAttribute('class', self::INPUT_CLASS);
+	}
+
+	public function getControl(): Html
+	{
+		$input = parent::getControl();
+
+		$button = Html::el('button')
+			->setAttribute('type', 'button')
+			->setAttribute('tabindex', '-1')
+			->appendAttribute('class', 'btn btn-outline-secondary ' . self::TOGGLE_CLASS)
+			->addHtml(Html::el('i')->setAttribute('class', 'fas fa-eye'));
+
+		$group = Html::el('div')
+			->setAttribute('class', 'input-group')
+			->addHtml($input)
+			->addHtml($button);
+
+		if (!self::$scriptRendered) {
+			self::$scriptRendered = true;
+			$group->addHtml(self::getScript());
+		}
+
+		return $group;
+	}
+
+	public static function addPasswordReveal(Container $container, string $name, $label = null): self
+	{
+		$component = new self($label);
+		$container->addComponent($component, $name);
+		return $component;
+	}
+
+	public static function register(): void
+	{
+		Form::extensionMethod('addPasswordReveal', [self::class, 'addPasswordReveal']);
+		Container::extensionMethod('addPasswordReveal', [self::class, 'addPasswordReveal']);
+	}
+
+	private static function getScript(): Html
+	{
+		$js = <<<JS
+		(function () {
+			if (window.__adtPasswordRevealInitialized) {
+				return;
+			}
+			window.__adtPasswordRevealInitialized = true;
+
+			var inputSelector = 'input.{INPUT_CLASS}';
+
+			function mask(input) {
+				if (input.dataset.passwordRevealMasked === '1') {
+					return;
+				}
+				input.dataset.passwordRevealMasked = '1';
+				input.type = 'password';
+			}
+
+			function maskAll() {
+				document.querySelectorAll(inputSelector).forEach(mask);
+			}
+
+			document.addEventListener('click', function (e) {
+				var button = e.target.closest('.{TOGGLE_CLASS}');
+				if (!button) {
+					return;
+				}
+				e.preventDefault();
+				var group = button.closest('.input-group');
+				var input = group ? group.querySelector(inputSelector) : null;
+				if (!input) {
+					return;
+				}
+				var masked = input.type === 'password';
+				input.type = masked ? 'text' : 'password';
+				var icon = button.querySelector('i');
+				if (icon) {
+					icon.classList.toggle('fa-eye', !masked);
+					icon.classList.toggle('fa-eye-slash', masked);
+				}
+			});
+
+			new MutationObserver(maskAll).observe(document.documentElement, { childList: true, subtree: true });
+			maskAll();
+		})();
+		JS;
+
+		$js = strtr($js, [
+			'{INPUT_CLASS}' => self::INPUT_CLASS,
+			'{TOGGLE_CLASS}' => self::TOGGLE_CLASS,
+		]);
+
+		return Html::el('script')->setHtml($js);
+	}
+}