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<?php
/**
* TListItem class file
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link https://github.com/pradosoft/prado
* @copyright Copyright © 2005-2016 The PRADO Group
* @license https://github.com/pradosoft/prado/blob/master/COPYRIGHT
* @package System.Web.UI.WebControls
*/
/**
* TListItem class.
*
* TListItem represents an item in a list control. Each item has a {@link setText Text}
* property and a {@link setValue Value} property. If either one of them is not set,
* it will take the value of the other property.
* An item can be {@link setSelected Selected} or {@link setEnabled Enabled},
* and it can have additional {@link getAttributes Attributes} which may be rendered
* if the list control supports so.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TListItem extends TComponent
{
/**
* @var TMap list of custom attributes
*/
private $_attributes=null;
/**
* @var string text of the item
*/
private $_text='';
/**
* @var string value of the item
*/
private $_value='';
/**
* @var boolean whether the item is enabled
*/
private $_enabled=true;
/**
* @var boolean whether the item is selected
*/
private $_selected=false;
/**
* Constructor.
* @param string text of the item
* @param string value of the item
* @param boolean whether the item is enabled
* @param boolean whether the item is selected
*/
public function __construct($text='',$value='',$enabled=true,$selected=false)
{
$this->setText($text);
$this->setValue($value);
$this->setEnabled($enabled);
$this->setSelected($selected);
}
/**
* Returns an array with the names of all variables of this object that should NOT be serialized
* because their value is the default one or useless to be cached for the next page loads.
* Reimplement in derived classes to add new variables, but remember to also to call the parent
* implementation first.
*/
protected function _getZappableSleepProps(&$exprops)
{
parent::_getZappableSleepProps($exprops);
if ($this->_attributes===null)
$exprops[] = "\0TListItem\0_attributes";
if($this->_text==='')
$exprops[] = "\0TListItem\0_text";
if($this->_value==='')
$exprops[] = "\0TListItem\0_value";
if ($this->_enabled===true)
$exprops[] = "\0TListItem\0_enabled";
if ($this->_selected===false)
$exprops[] = "\0TListItem\0_selected";
}
/**
* @return boolean whether the item is enabled
*/
public function getEnabled()
{
return $this->_enabled;
}
/**
* @param boolean whether the item is enabled
*/
public function setEnabled($value)
{
$this->_enabled=TPropertyValue::ensureBoolean($value);
}
/**
* @return boolean whether the item is selected
*/
public function getSelected()
{
return $this->_selected;
}
/**
* @param boolean whether the item is selected
*/
public function setSelected($value)
{
$this->_selected=TPropertyValue::ensureBoolean($value);
}
/**
* @return string text of the item
*/
public function getText()
{
return $this->_text===''?$this->_value:$this->_text;
}
/**
* @param string text of the item
*/
public function setText($value)
{
$this->_text=TPropertyValue::ensureString($value);
}
/**
* @return string value of the item
*/
public function getValue()
{
return $this->_value===''?$this->_text:$this->_value;
}
/**
* @param string value of the item
*/
public function setValue($value)
{
$this->_value=TPropertyValue::ensureString($value);
}
/**
* @return TAttributeCollection custom attributes
*/
public function getAttributes()
{
if(!$this->_attributes)
$this->_attributes=new TAttributeCollection;
return $this->_attributes;
}
/**
* @return boolean whether the item has any custom attribute
*/
public function getHasAttributes()
{
return $this->_attributes && $this->_attributes->getCount()>0;
}
/**
* @param string name of the attribute
* @return boolean whether the named attribute exists
*/
public function hasAttribute($name)
{
return $this->_attributes?$this->_attributes->contains($name):false;
}
/**
* @return string the named attribute value, null if attribute does not exist
*/
public function getAttribute($name)
{
return $this->_attributes?$this->_attributes->itemAt($name):null;
}
/**
* @param string attribute name
* @param string value of the attribute
*/
public function setAttribute($name,$value)
{
$this->getAttributes()->add($name,$value);
}
/**
* Removes the named attribute.
* @param string the name of the attribute to be removed.
* @return string attribute value removed, empty string if attribute does not exist.
*/
public function removeAttribute($name)
{
return $this->_attributes?$this->_attributes->remove($name):null;
}
}
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