removed useless type juggling

Author: dg

src/Forms/Container.php

@@ -344,7 +344,7 @@ public function addCheckboxList(string $name, $label = NULL, array $items = NULL
 	public function addSelect(string $name, $label = NULL, array $items = NULL, int $size = NULL): Controls\SelectBox
 	{
 		return $this[$name] = (new Controls\SelectBox($label, $items))
-			->setHtmlAttribute('size', $size > 1 ? (int) $size : NULL);
+			->setHtmlAttribute('size', $size > 1 ? $size : NULL);
 	}
 
 
@@ -355,7 +355,7 @@ public function addSelect(string $name, $label = NULL, array $items = NULL, int
 	public function addMultiSelect(string $name, $label = NULL, array $items = NULL, int $size = NULL): Controls\MultiSelectBox
 	{
 		return $this[$name] = (new Controls\MultiSelectBox($label, $items))
-			->setHtmlAttribute('size', $size > 1 ? (int) $size : NULL);
+			->setHtmlAttribute('size', $size > 1 ? $size : NULL);
 	}
 
 

src/Forms/Controls/BaseControl.php

@@ -219,7 +219,7 @@ public function isDisabled(): bool
 	 */
 	public function setOmitted(bool $value = TRUE)
 	{
-		$this->omitted = (bool) $value;
+		$this->omitted = $value;
 		return $this;
 	}
 

src/Forms/Controls/TextBase.php

@@ -63,7 +63,7 @@ public function getValue()
 	 */
 	public function setNullable(bool $value = TRUE)
 	{
-		$this->nullable = (bool) $value;
+		$this->nullable = $value;
 		return $this;
 	}
 
@@ -74,7 +74,7 @@ public function setNullable(bool $value = TRUE)
 	 */
 	public function setEmptyValue(string $value)
 	{
-		$this->emptyValue = (string) $value;
+		$this->emptyValue = $value;
 		return $this;
 	}
 

src/Forms/Controls/UploadControl.php

@@ -29,7 +29,7 @@ public function __construct($label = NULL, bool $multiple = FALSE)
 	{
 		parent::__construct($label);
 		$this->control->type = 'file';
-		$this->control->multiple = (bool) $multiple;
+		$this->control->multiple = $multiple;
 		$this->setOption('type', 'file');
 		$this->addCondition(Forms\Form::FILLED)
 			->addRule([$this, 'isOk'], Forms\Validator::$messages[self::VALID]);

src/Forms/Rules.php

@@ -164,7 +164,6 @@ public function endCondition(): Rules
 	 */
 	public function addFilter(callable $filter)
 	{
-		Nette\Utils\Callback::check($filter);
 		$this->rules[] = $rule = new Rule;
 		$rule->control = $this->control;
 		$rule->validator = function (IControl $control) use ($filter) {