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CFormInputElement.php
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CFormInputElement.php
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<?php
/**
* CFormInputElement class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright © 2008-2009 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* CFormInputElement represents form input element.
*
* CFormInputElement can represent the following types of form input based on {@link type} property:
* <ul>
* <li>text: a normal text input generated using {@link CHtml::activeTextField}</li>
* <li>hidden: a hidden input generated using {@link CHtml::activeHiddenField}</li>
* <li>password: a password input generated using {@link CHtml::activePasswordField}</li>
* <li>textarea: a text area generated using {@link CHtml::activeTextArea}</li>
* <li>file: a file input generated using {@link CHtml::activeFileField}</li>
* <li>radio: a radio button generated using {@link CHtml::activeRadioButton}</li>
* <li>checkbox: a check box generated using {@link CHtml::activeCheckBox}</li>
* <li>listbox: a list box generated using {@link CHtml::activeListBox}</li>
* <li>dropdownlist: a drop-down list generated using {@link CHtml::activeDropDownList}</li>
* <li>checkboxlist: a list of check boxes generated using {@link CHtml::activeCheckBoxList}</li>
* <li>radiolist: a list of radio buttons generated using {@link CHtml::activeRadioButtonList}</li>
* </ul>
* The {@link type} property can also be a class name or a path alias to the class. In this case,
* the input is generated using a widget of the specified class. Note, the widget must
* have a property called "model" which expects a model object, and a property called "attribute"
* which expects the name of a model attribute.
*
* Because CFormElement is an ancestor class of CFormInputElement, a value assigned to a non-existing property will be
* stored in {@link attributes} which will be passed as HTML attribute values to the {@link CHtml} method
* generating the input or initial values of the widget properties.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Id$
* @package system.web.form
* @since 1.1
*/
class CFormInputElement extends CFormElement
{
/**
* @var array Core input types (alias=>CHtml method name)
*/
public static $coreTypes=array(
'text'=>'activeTextField',
'hidden'=>'activeHiddenField',
'password'=>'activePasswordField',
'textarea'=>'activeTextArea',
'file'=>'activeFileField',
'radio'=>'activeRadioButton',
'checkbox'=>'activeCheckBox',
'listbox'=>'activeListBox',
'dropdownlist'=>'activeDropDownList',
'checkboxlist'=>'activeCheckBoxList',
'radiolist'=>'activeRadioButtonList',
);
/**
* @var string the type of this input. This can be a class name, a path alias of a class name,
* or a input type alias (text, hidden, password, textarea, file, radio, checkbox, listbox, dropdownlist, checkboxlist, or radiolist).
*/
public $type;
/**
* @var string name of this input
*/
public $name;
/**
* @var string hint text of this input
*/
public $hint;
/**
* @var array the options for this input when it is a list box, drop-down list, check box list, or radio button list.
* Please see {@link CHtml::listData} for details of generating this property value.
*/
public $items=array();
private $_label;
/**
* @return boolean whether this input is required. The value is determined by calling
* {@link CModel::isAttributeRequired} for the associated model and attribute of this input.
*/
public function getRequired()
{
return $this->getParent()->getModel()->isAttributeRequired($this->name);
}
/**
* @return string the label for this input. If the label is not manually set,
* this method will call {@link CModel::getAttributeLabel} to determine the label.
*/
public function getLabel()
{
if($this->_label!==null)
return $this->_label;
else
return $this->getParent()->getModel()->getAttributeLabel($this->name);
}
/**
* @param string the label for this input
*/
public function setLabel($value)
{
$this->_label=$value;
}
/**
* Renders everything for this input.
* The default implementation simply returns the result of {@link renderLabel}, {@link renderInput},
* {@link renderHint} and {@link renderError}.
* @return string the complete rendering result for this input, including label, input field, hint, and error.
*/
public function render()
{
return $this->renderLabel() . "\n"
. $this->renderInput() . "\n"
. $this->renderHint() . "\n"
. $this->renderError();
}
/**
* Renders the label for this input.
* The default implementation returns the result of {@link CHtml activeLabelEx}.
* @return string the rendering result
*/
public function renderLabel()
{
return CHtml::activeLabelEx($this->getParent()->getModel(), $this->name, array('label'=>$this->getLabel()));
}
/**
* Renders the input field.
* The default implementation returns the result of the appropriate CHtml method or the widget.
* @return string the rendering result
*/
public function renderInput()
{
if(isset(self::$coreTypes[$this->type]))
{
$method=self::$coreTypes[$this->type];
if(strpos($method,'List')!==false)
return CHtml::$method($this->getParent()->getModel(), $this->name, $this->items, $this->attributes);
else
return CHtml::$method($this->getParent()->getModel(), $this->name, $this->attributes);
}
else
{
$attributes=$this->attributes;
$attributes['model']=$this->getParent()->getModel();
$attributes['attribute']=$this->name;
ob_start();
$this->getParent()->getOwner()->widget($this->type, $attributes);
return ob_get_clean();
}
}
/**
* Renders the error display of this input.
* The default implementation returns the result of {@link CHtml::error}.
* @return string the rendering result
*/
public function renderError()
{
return CHtml::error($this->getParent()->getModel(), $this->name);
}
/**
* Renders the hint text for this input.
* The default implementation returns the {@link hint} property enclosed in a paragraph HTML tag.
* @return string the rendering result.
*/
public function renderHint()
{
return $this->hint===null ? '' : '<p class="hint">'.$this->hint.'</p>';
}
/**
* Evaluates the visibility of this element.
* This method will check the {@link on} property to see if
* the model is in a scenario that should have this string displayed.
* @return boolean whether this element is visible.
*/
protected function evaluateVisible()
{
return $this->type!=='hidden' && $this->getParent()->getModel()->isAttributeSafe($this->name);
}
}