summaryrefslogtreecommitdiff
path: root/framework/Web/UI/WebControls/TRequiredFieldValidator.php
blob: 702fc5d24e877fc2d80246746e70bbd6ad1896cb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
<?php
/**
 * TRequiredFieldValidator class file
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @link http://www.pradosoft.com/
 * @copyright Copyright &copy; 2005 PradoSoft
 * @license http://www.pradosoft.com/license/
 * @version $Revision: $  $Date: $
 * @package System.Web.UI.WebControls
 */

/**
 * Using TBaseValidator class
 */
Prado::using('System.Web.UI.WebControls.TBaseValidator');

/**
 * TRequiredFieldValidator class
 *
 * TRequiredFieldValidator makes the associated input control a required field.
 * The input control fails validation if its value does not change from
 * the {@link setInitialValue InitialValue} property upon losing focus.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @version $Revision: $  $Date: $
 * @package System.Web.UI.WebControls
 * @since 3.0
 */
class TRequiredFieldValidator extends TBaseValidator
{
	/**
	 * @return string the initial value of the associated input control. Defaults to empty string.
	 * If the associated input control does not change from this initial value
	 * upon postback, the validation fails.
	 */
	public function getInitialValue()
	{
		return $this->getViewState('InitialValue','');
	}

	/**
	 * @param string the initial value of the associated input control.
	 * If the associated input control does not change from this initial value
	 * upon postback, the validation fails.
	 */
	public function setInitialValue($value)
	{
		$this->setViewState('InitialValue',TPropertyValue::ensureString($value),'');
	}

	/**
	 * This method overrides the parent's implementation.
	 * The validation succeeds if the input component changes its data
	 * from the {@link getInitialValue InitialValue} or the input control is not given.
	 * @return boolean whether the validation succeeds
	 */
	protected function evaluateIsValid()
	{
		$value=$this->getValidationValue($this->getValidationTarget());
		return trim($value)!==trim($this->getInitialValue()) || (is_bool($value) && $value);
	}

	/**
	 * Returns an array of javascript validator options.
	 * @return array javascript validator options.
	 */
	protected function getClientScriptOptions()
	{
		$options = parent::getClientScriptOptions();
		$options['initialvalue']=$this->getInitialValue();
		return $options;
	}
}

?>