WP_List_Table::bulk_actions() WordPress Method

	protected function bulk_actions( $which = '' ) {
		if ( is_null( $this->_actions ) ) {
			$this->_actions = $this->get_bulk_actions();

			/**
			 * Filters the items in the bulk actions menu of the list table.
			 *
			 * The dynamic portion of the hook name, `$this->screen->id`, refers
			 * to the ID of the current screen.
			 *
			 * @since 3.1.0
			 * @since 5.6.0 A bulk action can now contain an array of options in order to create an optgroup.
			 *
			 * @param array $actions An array of the available bulk actions.
			 */
			$this->_actions = apply_filters( "bulk_actions-{$this->screen->id}", $this->_actions ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

			$two = '';
		} else {
			$two = '2';
		}

		if ( empty( $this->_actions ) ) {
			return;
		}

		echo '<label for="bulk-action-selector-' . esc_attr( $which ) . '" class="screen-reader-text">' . __( 'Select bulk action' ) . '</label>';
		echo '<select name="action' . $two . '" id="bulk-action-selector-' . esc_attr( $which ) . "\">\n";
		echo '<option value="-1">' . __( 'Bulk actions' ) . "</option>\n";

		foreach ( $this->_actions as $key => $value ) {
			if ( is_array( $value ) ) {
				echo "\t" . '<optgroup label="' . esc_attr( $key ) . '">' . "\n";

				foreach ( $value as $name => $title ) {
					$class = ( 'edit' === $name ) ? ' class="hide-if-no-js"' : '';

					echo "\t\t" . '<option value="' . esc_attr( $name ) . '"' . $class . '>' . $title . "</option>\n";
				}
				echo "\t" . "</optgroup>\n";
			} else {
				$class = ( 'edit' === $key ) ? ' class="hide-if-no-js"' : '';

				echo "\t" . '<option value="' . esc_attr( $key ) . '"' . $class . '>' . $value . "</option>\n";
			}
		}

		echo "</select>\n";

		submit_button( __( 'Apply' ), 'action', '', false, array( 'id' => "doaction$two" ) );
		echo "\n";
	}