1 files changed, 66 insertions, 0 deletions
diff --git a/www/wiki/includes/htmlform/fields/HTMLHiddenField.php b/www/wiki/includes/htmlform/fields/HTMLHiddenField.php
new file mode 100644
index 00000000..02562c4a
--- /dev/null
+++ b/www/wiki/includes/htmlform/fields/HTMLHiddenField.php
@@ -0,0 +1,66 @@
+<?php
+
+class HTMLHiddenField extends HTMLFormField {
+	protected $outputAsDefault = true;
+
+	public function __construct( $params ) {
+		parent::__construct( $params );
+
+		if ( isset( $this->mParams['output-as-default'] ) ) {
+			$this->outputAsDefault = (bool)$this->mParams['output-as-default'];
+		}
+
+		# Per HTML5 spec, hidden fields cannot be 'required'
+		# https://www.w3.org/TR/html5/forms.html#hidden-state-%28type=hidden%29
+		unset( $this->mParams['required'] );
+	}
+
+	public function getHiddenFieldData( $value ) {
+		$params = [];
+		if ( $this->mID ) {
+			$params['id'] = $this->mID;
+		}
+
+		if ( $this->outputAsDefault ) {
+			$value = $this->mDefault;
+		}
+
+		return [ $this->mName, $value, $params ];
+	}
+
+	public function getTableRow( $value ) {
+		list( $name, $value, $params ) = $this->getHiddenFieldData( $value );
+		$this->mParent->addHiddenField( $name, $value, $params );
+		return '';
+	}
+
+	/**
+	 * @param string $value
+	 * @return string
+	 * @since 1.20
+	 */
+	public function getDiv( $value ) {
+		return $this->getTableRow( $value );
+	}
+
+	/**
+	 * @param string $value
+	 * @return string
+	 * @since 1.20
+	 */
+	public function getRaw( $value ) {
+		return $this->getTableRow( $value );
+	}
+
+	public function getInputHTML( $value ) {
+		return '';
+	}
+
+	public function canDisplayErrors() {
+		return false;
+	}
+
+	public function hasVisibleOutput() {
+		return false;
+	}
+}