/lib/fields/class.DateTextField.php

<?php

/**

 * class DateTextField

 *

 * Create a DateTextfield

 *

 * @author Thomas Branius

 * @since 16-03-2010

 * @package FormHandler

 * @subpackage Fields

 * 

 *  validators added by Johan Wiegel

 */

class DateTextField extends TextField

{

	var $_sDateMask;				// string: how to display the fields with mask

	var $_sValParseRegExpr;			// string: how to parse the value

	var $_iDayPos;					// int: position of day in regular expression

	var $_iMonthPos;				// int: position of month in regular expression

	var $_iYearPos;					// int: position of year in regular expression

	var $_bParseOtherPresentations;	// bool: try to parse other presentations of dateformat



	/**

     * Constructor: create a new dateTextField object

     *

     * @param object &$oForm: the form where the datefield is located on

     * @param string $sName: the name of the datefield

     * @param string $sMask: the mask which is used to display the fields

     * @param bool $bParseOtherPresentations: try to parse other presentations of dateformat

     * @return dateTextField

     * @access public

     * @author Thomas Branius

     * @since 16-03-2010

     */

	function DateTextField( &$oForm, $sName, $sMask = null, $bParseOtherPresentations = false )

	{

		// set the default date display

		$this->setMask( !is_null( $sMask ) ? $sMask : FH_DATETEXTFIELD_DEFAULT_DISPLAY );



		$this->_bParseOtherPresentations = $bParseOtherPresentations;



		//$this->setValidator(array(&$this, "validate"));



		// call the constructor of the Field class

		parent::TextField($oForm, $sName);

	}



	/**

     * Set the display of the fields

     *

     * @param string $sMast: how we have to display the datefield (day-month-year combination)

     * @return void

     * @access public

     * @author Thomas Branius]

     * @since 16-03-2010

     */

	function setMask( $sMask )

	{

		// validate the mask

		$regex = '/^([dDmMyY])([\.\-\/])([dDmMyY])\2([dDmMyY])$/';



		if (preg_match($regex, $sMask, $data) == 0

		|| strtolower($data[1]) == strtolower($data[3])

		|| strtolower($data[1]) == strtolower($data[4])

		|| strtolower($data[3]) == strtolower($data[4]))

		trigger_error("Invalid mask ['{$sMask}']. Useable chars: d, D, m, M, y, Y, ., -, /", E_USER_ERROR);



		// set postion of day, month and year

		for ($i = 1; $i < 5; $i++)

		{

			if (strtolower($data[$i]) == "d")

			$this->_iDayPos = $i;

			else if (strtolower($data[$i]) == "m")

			$this->_iMonthPos =$i;

			else if (strtolower($data[$i]) == "y")

			$this->_iYearPos = $i;

		}



		$seperator = str_replace(array('/', '.'), array('\/', '\.'), $data[2]);

		$regExDay = '[0-9]{' . ($data[$this->_iDayPos] == 'D' ? '1,2' : '2' ) . '}';

		$regExMonth = '[0-9]{' . ($data[$this->_iMonthPos] == 'M' ? '1,2' : '2' ) . '}';

		$regExYear = '[0-9]{' . ($data[$this->_iYearPos] == 'y' ? '2' : '4' ) . '}';



		$this->_iDayPos = $this->_iDayPos > 1 ? $this->_iDayPos - 1 : $this->_iDayPos;

		$this->_iMonthPos = $this->_iMonthPos > 1 ? $this->_iMonthPos - 1 : $this->_iMonthPos;

		$this->_iYearPos = $this->_iYearPos > 1 ? $this->_iYearPos - 1 : $this->_iYearPos;



		if ($this->_iYearPos == 1)

		{

			if ($this->_iDayPos == 2)

			$this->_sValParseRegExpr = "/^({$regExYear}){$seperator}({$regExDay}){$seperator}({$regExMonth})$/";

			else

			$this->_sValParseRegExpr = "/^({$regExYear}){$seperator}({$regExMonth}){$seperator}({$regExDay})$/";

		}

		else if ($this->_iYearPos == 2)

		{

			if ($this->_iDayPos == 1)

			$this->_sValParseRegExpr = "/^({$regExDay}){$seperator}({$regExYear}){$seperator}({$regExMonth})$/";

			else

			$this->_sValParseRegExpr = "/^({$regExMonth}){$seperator}({$regExYear}){$seperator}({$regExDay})$/";

		}

		else if ($this->_iYearPos == 3)

		{

			if ($this->_iDayPos == 1)

			$this->_sValParseRegExpr = "/^({$regExDay}){$seperator}({$regExMonth}){$seperator}({$regExYear})$/";

			else

			$this->_sValParseRegExpr = "/^({$regExMonth}){$seperator}({$regExDay}){$seperator}({$regExYear})$/";

		}





		// mask for date-function

		$this->_sDateMask = str_replace(array("D", "M"), array("j", "n"), $sMask);

	}



	/**

     * Get the date value as an array: array(y,m,d)

     *

     * @return array

     * @access public

     * @author Thomas Branius

     * @since 16-03-2010

     */

	function getAsArray()

	{

		if ($this->getValue() == "")

		{

			return array("", "", ""); 

		}

		if (preg_match($this->_sValParseRegExpr, $this->getValue(), $data) == 0)

		trigger_error("Value is not a valid date [" . $this->getValue() . "]", E_USER_ERROR);

		if ($data[$this->_iYearPos] <= 50)

		$data[$this->_iYearPos] = $data[$this->_iYearPos] + 2000;

		if ($data[$this->_iYearPos] <= 100)

		$data[$this->_iYearPos] = $data[$this->_iYearPos] + 1900;



		return array( $data[$this->_iYearPos], $data[$this->_iMonthPos],  $data[$this->_iDayPos]);

	}



	/**

     * Return the value of the field

     *

     * @return mixed: the value of the field

     * @access public

     * @author Thomas Branius

     * @since 16-03-2010

     */

	function getValue()

	{

		$sValue = parent::getValue();



		if (preg_match($this->_sValParseRegExpr, $sValue))

		return $sValue;



		if ($this->_bParseOtherPresentations)

		$sValue = $this->parseOtherPresentations($sValue);



		return $sValue;

	}



	/**

     * Set the value of the field

     *

     * @param mixed $mValue: The new value for the field

     * @return void

     * @access public

     * @author Thomas Branius

     * @since 16-03-2010

     */

	function setValue( $mValue )

	{

		if ($this->_oForm->isPosted())

		return parent::setValue($mValue);



		// parse value from db

		$regex = '/([0-9]{4})-([0-9]{2})-([0-9]{2})/';



		if (preg_match("/0000-00-00/", $mValue))

		{

			$this->_mValue = null;

		}

		else if (preg_match($regex, $mValue, $data))

		{

			$timestamp = mktime(0, 0, 0, $data[2], $data[3], $data[1]);

			$this->_mValue = date($this->_sDateMask, $timestamp);

		}

		else

		{

			$this->_mValue = $mValue;

		}

	}



	/**

     T* try to parse other presentations of dateformat

     *

     * @return mixed: the value of the field

     * @access public

     * @author Thomas Branius

     * @since 16-03-2010

     */

	function parseOtherPresentations($sValue)

	{

		// dd.mm.YYYY, dd/mm/YYYY, dd-mm-YYYY

		// dd.mm.YY, dd/mm/YY, dd-mm-YY

		// d.m.YYYY, d/m/YYYY, d-m-YYYY

		// d.m.YY, d/m/YY, d-m-YY

		$regex1 = '^([0-3]?\d)([\-\.\/])([01]?\d)\2([0-9]{2})(\d\d){0,1}$';



		if (preg_match("/$regex1/", str_replace(' ', '', $this->_mValue), $data))

		{

			if (isset($data[5]))

			$year = $data[4] * 100 + $data[5];

			else if ($data[4] <= 50)

			$year = 2000 + $data[4];

			else

			$year = 1900 + $data[4];



			$day = $data[1];

			$month = $data[3];



			$timestamp = mktime(0, 0, 0, $month, $day, $year);

			$this->_mValue = date($this->_sDateMask, $timestamp);

			return date($this->_sDateMask, $timestamp);

		}



		// YYYY/mm/dd, YYYY-mm-dd

		// YY/mm/dd, YY-mm-dd

		// YYYY/m/d, YYYY-m-y

		// YY/m/d, YY-m-y

		$regex2 = '^([0-9]{2})(\d\d){0,1}([\-\/])([01]?\d)\3([0-3]?\d)$';



		if (preg_match("/$regex2/", str_replace(' ', '', $this->_mValue), $data))

		{

			if (isset($data[2]))

			$year = $data[1] * 100 + $data[2];

			else if ($data[1] <= 50)

			$year = 2000 + $data[1];

			else

			$year = 1900 + $data[1];



			$day = $data[5];

			$month = $data[4];



			$timestamp = mktime(0, 0, 0, $month, $day, $year);

			$this->_mValue = date($this->_sDateMask, $timestamp);

			return date($this->_sDateMask, $timestamp);

		}



		return $sValue;

	}



	/**

     * Check if the date is valid (eg not 31-02-2003)

     *

     * @return boolean: true if the field is correct, false if not

     * @access public

     * @author Thomas Branius

     */

	function isValid()

	{

		// the result has been requested before..

		if( isset( $this->_isValid ) )

		{

			return $this->_isValid;

		}



		if( $this->getValue() != "" )

		{

			if( preg_match( $this->_sValParseRegExpr, $this->getValue(), $data ) )

			{

				$data = $this->getAsArray();

				if( checkdate($data[1], $data[2], $data[0]) == false )

				{

					$this->_isValid = false;

				}

				else

				{

					$timestamp = mktime(0, 0, 0,$data[1], $data[2], $data[0]);

					$this->_mValue = date($this->_sDateMask, $timestamp);

				}

			}

			else

			{

				$this->_isValid = false;

			}

		}



		if( isset( $this->_isValid ) && $this->_isValid == false )

		{

			// set the error message

			$this->_sError = $this->_oForm->_text( 14 );

		}



		return parent::isValid();

	}

}

?>