<?php
/**
 * TValidationSummary class file
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @link http://www.pradosoft.com/
 * @copyright Copyright &copy; 2005-2014 PradoSoft
 * @license http://www.pradosoft.com/license/
 * @package Prado\Web\UI\WebControls
 */

namespace Prado\Web\UI\WebControls;
use Prado\TPropertyValue;
use Prado\Web\Javascripts\TJavaScript;

/**
 * TValidationSummary class
 *
 * TValidationSummary displays a summary of validation errors inline on a Web page,
 * in a message box, or both. By default, a validation summary will collect
 * {@link TBaseValidator::getErrorMessage ErrorMessage} of all failed validators
 * on the page. If {@link getValidationGroup ValidationGroup} is not
 * empty, only those validators who belong to the group will show their error messages
 * in the summary.
 *
 * The summary can be displayed as a list, as a bulleted list, or as a single
 * paragraph based on the {@link setDisplayMode DisplayMode} property.
 * The messages shown can be prefixed with {@link setHeaderText HeaderText}.
 *
 * The summary can be displayed on the Web page and in a message box by setting
 * the {@link setShowSummary ShowSummary} and {@link setShowMessageBox ShowMessageBox}
 * properties, respectively. Note, the latter is only effective when
 * {@link setEnableClientScript EnableClientScript} is true.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @package Prado\Web\UI\WebControls
 * @since 3.0
 */
class TValidationSummary extends \Prado\Web\UI\WebControls\TWebControl
{
	/**
	 * @var TClientSideValidationSummaryOptions validation client side options.
	 */
	private $_clientSide;

	/**
	 * Constructor.
	 * This method sets the foreground color to red.
	 */
	public function __construct()
	{
		parent::__construct();
		$this->setForeColor('red');
	}

	/**
	 * @return TValidationSummaryDisplayStyle the style of displaying the error messages. Defaults to TValidationSummaryDisplayStyle::Fixed.
	 */
	public function getDisplay()
	{
		return $this->getViewState('Display',TValidationSummaryDisplayStyle::Fixed);
	}

	/**
	 * @param TValidationSummaryDisplayStyle the style of displaying the error messages
	 */
	public function setDisplay($value)
	{
		$this->setViewState('Display',TPropertyValue::ensureEnum($value,'TValidationSummaryDisplayStyle'),TValidationSummaryDisplayStyle::Fixed);
	}

	/**
	 * @return string the header text displayed at the top of the summary
	 */
	public function getHeaderText()
	{
		return $this->getViewState('HeaderText','');
	}

	/**
	 * Sets the header text to be displayed at the top of the summary
	 * @param string the header text
	 */
	public function setHeaderText($value)
	{
		$this->setViewState('HeaderText',$value,'');
	}

	/**
	 * @return TValidationSummaryDisplayMode the mode of displaying error messages. Defaults to TValidationSummaryDisplayMode::BulletList.
	 */
	public function getDisplayMode()
	{
		return $this->getViewState('DisplayMode',TValidationSummaryDisplayMode::BulletList);
	}

	/**
	 * @param TValidationSummaryDisplayMode the mode of displaying error messages
	 */
	public function setDisplayMode($value)
	{
		$this->setViewState('DisplayMode',TPropertyValue::ensureEnum($value,'TValidationSummaryDisplayMode'),TValidationSummaryDisplayMode::BulletList);
	}

	/**
	 * @return boolean whether the TValidationSummary component updates itself using client-side script. Defaults to true.
	 */
	public function getEnableClientScript()
	{
		return $this->getViewState('EnableClientScript',true);
	}

	/**
	 * @param boolean whether the TValidationSummary component updates itself using client-side script.
	 */
	public function setEnableClientScript($value)
	{
		$this->setViewState('EnableClientScript',TPropertyValue::ensureBoolean($value),true);
	}

	/**
	 * @return boolean whether the validation summary is displayed in a message box. Defaults to false.
	 */
	public function getShowMessageBox()
	{
		return $this->getViewState('ShowMessageBox',false);
	}

	/**
	 * @param boolean whether the validation summary is displayed in a message box.
	 */
	public function setShowMessageBox($value)
	{
		$this->setViewState('ShowMessageBox',TPropertyValue::ensureBoolean($value),false);
	}

	/**
	 * @return boolean whether the validation summary is displayed inline. Defaults to true.
	 */
	public function getShowSummary()
	{
		return $this->getViewState('ShowSummary',true);
	}

	/**
	 * @param boolean whether the validation summary is displayed inline.
	 */
	public function setShowSummary($value)
	{
		$this->setViewState('ShowSummary',TPropertyValue::ensureBoolean($value),true);
	}

	/**
	 * @return boolean whether scroll summary into viewport or not. Defaults to true.
	 */
	public function getScrollToSummary()
	{
		return $this->getViewState('ScrollToSummary',true);
	}

	/**
	 * @param boolean whether scroll summary into viewport or not.
	 */
	public function setScrollToSummary($value)
	{
		$this->setViewState('ScrollToSummary',TPropertyValue::ensureBoolean($value),true);
	}

	/**
	 * @return boolean whether the validation summary should be anchored. Defaults to false.
	 */
	public function getShowAnchor()
	{
		return $this->getViewState('ShowAnchor',false);
	}

	/**
	 * @param boolean whether the validation summary should be anchored.
	 */
	public function setShowAnchor($value)
	{
		$this->setViewState('ShowAnchor',TPropertyValue::ensureBoolean($value),false);
	}

	/**
	 * Gets the auto-update for this summary.
	 * @return boolean automatic client-side summary updates. Defaults to true.
	 */
	public function getAutoUpdate()
	{
		return $this->getViewState('AutoUpdate', true);
	}

	/**
	 * Sets the summary to auto-update on the client-side
	 * @param boolean true for automatic summary updates.
	 */
	public function setAutoUpdate($value)
	{
		$this->setViewState('AutoUpdate', TPropertyValue::ensureBoolean($value), true);
	}

	/**
	 * @return string the group which this validator belongs to
	 */
	public function getValidationGroup()
	{
		return $this->getViewState('ValidationGroup','');
	}

	/**
	 * @param string the group which this validator belongs to
	 */
	public function setValidationGroup($value)
	{
		$this->setViewState('ValidationGroup',$value,'');
	}

	protected function addAttributesToRender($writer)
	{
		$display=$this->getDisplay();
		$visible=$this->getEnabled(true) && count($this->getErrorMessages()) > 0;
		if(!$visible)
		{
			if($display===TValidationSummaryDisplayStyle::None || $display===TValidationSummaryDisplayStyle::Dynamic)
				$writer->addStyleAttribute('display','none');
			else
				$writer->addStyleAttribute('visibility','hidden');
		}
		$writer->addAttribute('id',$this->getClientID());
		parent::addAttributesToRender($writer);
	}

	/**
	 * Render the javascript for validation summary.
	 * @param array list of options for validation summary.
	 */
	protected function renderJsSummary()
	{
		if(!$this->getEnabled(true) || !$this->getEnableClientScript())
			return;
		$cs = $this->getPage()->getClientScript();
		$cs->registerPradoScript('validator');

		//need to register the validation manager is validation summary is alone.
		$formID=$this->getPage()->getForm()->getClientID();
		$scriptKey = "TBaseValidator:$formID";
		if($this->getEnableClientScript() && !$cs->isEndScriptRegistered($scriptKey))
		{
			$manager['FormID'] = $formID;
			$options = TJavaScript::encode($manager);
			$cs->registerPradoScript('validator');
			$cs->registerEndScript($scriptKey, "new Prado.ValidationManager({$options});");
		}


		$options=TJavaScript::encode($this->getClientScriptOptions());
		$script = "new Prado.WebUI.TValidationSummary({$options});";
		$cs->registerEndScript($this->getClientID(), $script);
	}

	/**
	 * Get a list of options for the client-side javascript validation summary.
	 * @return array list of options for the summary
	 */
	protected function getClientScriptOptions()
	{
		$options['ID'] = $this->getClientID();
		$options['FormID'] = $this->getPage()->getForm()->getClientID();
		if($this->getShowMessageBox())
			$options['ShowMessageBox']=true;
		if(!$this->getShowSummary())
			$options['ShowSummary']=false;

		$options['ScrollToSummary']=$this->getScrollToSummary();
		$options['HeaderText']=$this->getHeaderText();
		$options['DisplayMode']=$this->getDisplayMode();

		$options['Refresh'] = $this->getAutoUpdate();
		$options['ValidationGroup'] =  $this->getValidationGroup();
		$options['Display'] = $this->getDisplay();

		if($this->_clientSide!==null)
			$options = array_merge($options,$this->_clientSide->getOptions()->toArray());

		return $options;
	}

	/**
	 * @return TClientSideValidationSummaryOptions client-side validation summary
	 * event options.
	 */
	public function getClientSide()
	{
		if($this->_clientSide===null)
			$this->_clientSide = $this->createClientScript();
		return $this->_clientSide;
	}

	/**
	 * @return TClientSideValidationSummaryOptions javascript validation summary
	 * event options.
	 */
	protected function createClientScript()
	{
		return new TClientSideValidationSummaryOptions;
	}
	/**
	 * Get the list of validation error messages.
	 * @return array list of validator error messages.
	 */
	protected function getErrorMessages()
	{
		$validators=$this->getPage()->getValidators($this->getValidationGroup());
		$messages = array();
		foreach($validators as $validator)
		{
			if(!$validator->getIsValid() && ($msg=$validator->getErrorMessage())!=='')
				//$messages[] = $validator->getAnchoredMessage($msg);
				$messages[] = $msg;
		}
		return $messages;
	}

	/**
	 * Overrides parent implementation by rendering TValidationSummary-specific presentation.
	 * @return string the rendering result
	 */
	public function renderContents($writer)
	{
		$this->renderJsSummary();
		if($this->getShowSummary())
		{
//		    $this->setStyle('display:block');
			switch($this->getDisplayMode())
			{
				case TValidationSummaryDisplayMode::SimpleList:
					$this->renderList($writer);
					break;
				case TValidationSummaryDisplayMode::SingleParagraph:
					$this->renderSingleParagraph($writer);
					break;
				case TValidationSummaryDisplayMode::BulletList:
					$this->renderBulletList($writer);
					break;
				case TValidationSummaryDisplayMode::HeaderOnly:
					$this->renderHeaderOnly($writer);
					break;
			}
		}
	}

	/**
	 * Render the validation summary as a simple list.
	 * @param array list of messages
	 * @param string the header text
	 * @return string summary list
	 */
	protected function renderList($writer)
	{
		$header=$this->getHeaderText();
		$messages=$this->getErrorMessages();
		$content = '';
		if(strlen($header))
			$content.= $header."<br/>\n";
		foreach($messages as $message)
			$content.="$message<br/>\n";
		$writer->write($content);
	}

	/**
	 * Render the validation summary as a paragraph.
	 * @param array list of messages
	 * @param string the header text
	 * @return string summary paragraph
	 */
	protected function renderSingleParagraph($writer)
	{
		$header=$this->getHeaderText();
		$messages=$this->getErrorMessages();
		$content = $header;
		foreach($messages as $message)
			$content.= ' '.$message;
		$writer->write($content);
	}

	/**
	 * Render the validation summary as a bullet list.
	 * @param array list of messages
	 * @param string the header text
	 * @return string summary bullet list
	 */
	protected function renderBulletList($writer)
	{
		$header=$this->getHeaderText();
		$messages=$this->getErrorMessages();
		$content = $header;
		if(count($messages)>0)
		{
			$content .= "<ul>\n";
			foreach($messages as $message)
				$content.= '<li>'.$message."</li>\n";
			$content .= "</ul>\n";
		}
		$writer->write($content);
	}

	/**
	 * Render the validation summary header text only.
	 * @param THtmlWriter the writer used for the rendering purpose
	 */
	protected function renderHeaderOnly($writer)
	{
		$writer->write($this->getHeaderText());
	}
}