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<?php
/**
* TRatingList class file.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2008 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Id$
* @package System.Web.UI.WebControls
*/
/**
* Includes TRadioButtonList class
*/
Prado::using('System.Web.UI.WebControls.TRadioButtonList');
/**
* TRatingList class.
*
* This class is EXPERIMENTAL.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @version $Id$
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TRatingList extends TRadioButtonList
{
const SCRIPT_PATH='prado/ratings';
private $_ratingImages = array();
public function __construct()
{
parent::__construct();
$this->getRepeatInfo()->setRepeatDirection('Horizontal');
}
public function getAllowInput()
{
return $this->getViewState('AllowInput', true);
}
public function setAllowInput($value)
{
$this->setViewState('AllowInput', TPropertyValue::ensureBoolean($value), true);
}
public function getRating()
{
if($this->getAllowInput())
return $this->getSelectedIndex();
else
return $this->getViewState('Rating',0);
}
public function setRating($value)
{
if($this->getAllowInput())
$this->setSelectedIndex($value);
else
$this->setViewState('Rating', TPropertyValue::ensureFloat($value),0);
}
/**
* @param string set the rating style
*/
public function setRatingStyle($value)
{
$this->setViewState('RatingStyle', $value, 'default');
}
/**
* @return TRatingListStyle current rating style
*/
public function getRatingStyle()
{
return $this->getViewState('RatingStyle', 'default');
}
/**
* @return string caption text. Default is "Rate It:".
*/
public function getCaption()
{
return $this->getViewState('Caption', 'Rate It:');
}
/**
* @param string caption text
*/
public function setCaption($value)
{
$this->setViewState('Caption', $value, 'Rate It:');
}
public function setHalfRatingLimit($value)
{
$this->setViewState('HalfRating',
TPropertyValue::ensureArray($value), array(0.3, 0.7));
}
public function getHalfRatingLimit()
{
return $this->getViewState('HalfRating', array(0.3, 0.7));
}
/**
* @param string asset file in the self::SCRIPT_PATH directory.
* @return string asset file url.
*/
protected function getAssetUrl($file='')
{
$base = $this->getPage()->getClientScript()->getPradoScriptAssetUrl();
return $base.'/'.self::SCRIPT_PATH.'/'.$file;
}
public function getRatingClientOptions()
{
$options['cssClass'] = 'TRatingList_'.$this->getRatingStyle();
$options['ID'] = $this->getClientID();
$options['caption'] = $this->getCaption();
$options['field'] = $this->getUniqueID();
$options['selectedIndex'] = $this->getSelectedIndex();
return $options;
}
protected function publishRatingListStyle($style)
{
$cs = $this->getPage()->getClientScript();
$url = $this->getAssetUrl($style.'.css');
if(!$cs->isStyleSheetFileRegistered($url))
$cs->registerStyleSheetFile($url, $url);
return $url;
}
protected function publishRatingListImages($style, $fileExt='.gif')
{
$images = array('blank', 'hover', 'selected', 'half');
$files = array();
foreach($images as $type)
$files[$type] = $this->getAssetUrl("{$style}_{$type}{$fileExt}");
return $files;
}
/**
* @param THtmlWriter writer
*/
public function onPreRender($param)
{
parent::onPreRender($param);
$this->publishRatingListStyle($this->getRatingStyle());
$this->_ratingImages = $this->publishRatingListImages($this->getRatingStyle());
if($this->getAllowInput())
$this->registerRatingListClientScript();
else
{
$this->getRepeatInfo()->setCaption($this->getCaption());
$this->setAttribute('title', $this->getRating());
}
}
protected function registerRatingListClientScript()
{
$id = $this->getClientID();
$scripts = $this->getPage()->getClientScript();
$scripts->registerPradoScript('prado');
$options = TJavaScript::encode($this->getRatingClientOptions());
$code = "new Prado.WebUI.TRatingList($options);";
$scripts->registerEndScript("prado:$id", $code);
}
public function renderItem($writer,$repeatInfo,$itemType,$index)
{
if($this->getAllowInput())
parent::renderItem($writer, $repeatInfo, $itemType, $index);
else
$this->renderRatingListItem($writer, $repeatInfo, $itemType, $index);
}
protected function renderRatingListItem($writer, $repeatInfo, $itemType, $index)
{
$image = new TImage;
$image->setImageUrl($this->_ratingImages[$this->getRatingImageType($index)]);
$image->setAlternateText($this->getRating());
$image->render($writer);
}
protected function getRatingImageType($index)
{
$rating = floatval($this->getRating());
$int = intval($rating);
$limit = $this->getHalfRatingLimit();
if($index < $int || ($rating < $index + 1 && $rating > $index +$limit[1]))
return 'selected';
if($rating >= $index+$limit[0] && $rating <= $index+$limit[1])
return 'half';
return 'blank';
}
public function generateItemStyle($itemType,$index)
{
return new TStyle;
}
/**
* Gets the name of the javascript class responsible for performing postback for this control.
* This method overrides the parent implementation.
* @return string the javascript class name
*/
protected function getClientClassName()
{
return 'Prado.WebUI.TRatingList';
}
}
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