<?
class Validator {

	var $errors; // A variable to store a list of error messages

	// Validate something's been entered
	function validateGeneral($theinput,$description = '') {
		if (trim($theinput) != "") {
			return true;
		} else {
			$this->errors[] = $description;
			return false;
		}
	}
	
	// Validate empty variabel
	function validateEmpty($theinput,$description = '') {	
		if (empty($theinput)) {
			$this->errors[] = $description;
			return false;
		} else {
			return true;
		}
	}

	// Validate text only
	function validateTextOnly($theinput,$description = '') {
		$result = ereg ("^[A-Za-z0-9\ ]+$", $theinput );
		if ($result) {
			return true;
		} else {
			$this->errors[] = $description;
			return false; 
		}
	}

	// Validate text only, no spaces allowed
	function validateTextOnlyNoSpaces($theinput,$description = '') {
		$result = ereg ("^[A-Za-z0-9]+$", $theinput );
		if ($result) {
			return true;
		} else {
			$this->errors[] = $description;
			return false; 
		}
	}
		
	// Validate email address
	function validateEmail($themail,$allowempty,$description = '') {
		if (!empty($themail)) {
			$result = ereg ("^[^@ ]+@[^@ ]+\.[^@ \.]+$", $themail );
			if ($result) {
				return true;
			} else {
				$this->errors[] = $description;
				return false; 
			}
		}
		if ($allowempty = "yes") {
			return true;
		} else {
			$this->errors[] = "epost adressen kan ikke være tom";
			return false;
		}
	}
	
	// Validate numbers only
	function validateNumber($theinput,$description = '') {
		if (is_numeric($theinput)) {
			return true; // The value is numeric, return true
		} else { 
			$this->errors[] = $description; // Value not numeric! Add error description to list of errors
			return false; // Return false
		}
	}
	
	// Validate date
	function validateDate($thedate,$description = '') {

		if (strtotime($thedate) === -1 || $thedate == '') {
			$this->errors[] = $description;
			return false;
		} else {
			return true;
		}
	}
	
	// Check whether any errors have been found (i.e. validation has returned false)
	// since the object was created
	function foundErrors() {
		if (count($this->errors) > 0) {
			return true;
		} else {
			return false;
		}
	}
	
	// List errors
	function showErrors($title = 'The following errors occured:',$width = '100%') {
                 print "<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\" width=\"$width\">".
                       "<tr><td bgcolor=\"#A12A2A\" width=\"36\" align=\"center\" valign=\"top\"><img src=\"images/err.gif\" alt=\"info\" width=\"28\" height=\"32\"></td>".
                       "<td bgcolor=\"#FFD9D1\" style=\"padding-left: 8px; padding-top: 6px\">".
                       "<span class=\"errmsg\">$title</span>".
                       "<ul>";
                 foreach ($this->errors as $errornr) {
                   print "<li class=\"errmsg\">".htmlentities($errornr)."</li>";
                 }
                   print "</ul>".
                         "</td></tr></table><br>";
                 	

	}

	// Manually add something to the list of errors
	function addError($description) {
		$this->errors[] = $description;
	}	
		
}
?>