SubmitButton::setValidationScope() accepts ?array; replace FALSE with [] (BC break)

Author: dg

src/Forms/Controls/SubmitButton.php

@@ -65,9 +65,9 @@ public function isSubmittedBy(): bool
 	 * Sets the validation scope. Clicking the button validates only the controls within the specified scope.
 	 * @return static
 	 */
-	public function setValidationScope(/*array*/$scope = NULL)
+	public function setValidationScope(?array $scope)
 	{
-		if ($scope === NULL || $scope === TRUE) {
+		if ($scope === NULL) {
 			$this->validationScope = NULL;
 		} else {
 			$this->validationScope = [];

tests/Forms/Controls.Button.render.phpt

@@ -84,7 +84,7 @@ test(function () { // SubmitButton
 
 test(function () { // SubmitButton with scope
 	$form = new Form;
-	$input = $form->addSubmit('button', 'Caption')->setValidationScope(FALSE);
+	$input = $form->addSubmit('button', 'Caption')->setValidationScope([]);
 
 	Assert::same('<input type="submit" name="button" value="Caption" formnovalidate>', (string) $input->getControl());
 });

tests/Forms/Forms.validationScope.phpt

@@ -38,7 +38,7 @@ foreach ($datasets as $case) {
 	$details->addText('age2')->setRequired('age2');
 
 	$form->addSubmit('send1');
-	$form->addSubmit('send2')->setValidationScope(FALSE);
+	$form->addSubmit('send2')->setValidationScope([]);
 	$form->addSubmit('send3')->setValidationScope([$form['name']]);
 	$form->addSubmit('send4')->setValidationScope([$form['details']['age']]);
 	$form->addSubmit('send5')->setValidationScope([$form['details']]);