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<?php
namespace Bitrix\DocumentGenerator\Body;
use Bitrix\DocumentGenerator\Body;
use Bitrix\DocumentGenerator\Document;
use Bitrix\Main\Result;
use Bitrix\Main\Web\DOM\Node;
use Bitrix\DocumentGenerator\Nameable;
class Html extends Body implements Nameable
{
protected $htmlDocument;
/**
* @inheritdoc
*/
public function __construct($content, \Bitrix\Main\Web\DOM\Document $htmlDocument = null)
{
parent::__construct($content);
if($htmlDocument)
{
$this->htmlDocument = $htmlDocument;
}
else
{
$this->htmlDocument = new \Bitrix\Main\Web\DOM\Document();
}
$this->htmlDocument->loadHTML($this->content);
}
/**
* @return string
*/
public function getFileExtension()
{
return 'html';
}
/**
* @inheritdoc
*/
public function getPlaceholders()
{
$names = static::matchFieldNames($this->content);
$variableAttributes = [
'condition', 'from', 'to',
];
$commandNodes = $this->htmlDocument->querySelectorAll('command');
foreach($commandNodes as $nextCommand)
{
$nodeAttributes = static::getNodeAttributes($nextCommand);
foreach($variableAttributes as $attribute)
{
if($nodeAttributes[$attribute])
{
$names[] = $nodeAttributes[$attribute];
}
}
}
return $names;
}
/**
* @inheritdoc
*/
public function process()
{
$result = new Result();
while($nextCommand = $this->htmlDocument->querySelector('command'))
{
$this->processCommand($nextCommand);
}
$this->insertValues();
$this->content = $this->htmlDocument->getInnerHTML();
$result->setData(['CONTENT' => $this->content]);
return $result;
}
/**
* Fill $content with field values
*
* @return void
*/
protected function insertValues()
{
$resultHtml = $this->replacePlaceholders($this->htmlDocument->getInnerHTML());
$this->htmlDocument->setInnerHTML($resultHtml);
}
/**
* Process one <command> tag.
*
* @param Node $node
*/
protected function processCommand(Node $node)
{
$nodeAttributes = static::getNodeAttributes($node);
$command = $nodeAttributes['name'];
if($command == 'if')
{
$variableName = $nodeAttributes['condition'];
$variableValue = $this->values[$variableName];
if($variableValue)
{
$this->replaceCommand($node, $node->getInnerHTML());
}
else
{
$this->replaceCommand($node, '');
}
}
elseif($command == 'foreach')
{
$variableName = $nodeAttributes['from'];
$variableValue = $this->values[$variableName];
$innerVariableName = $nodeAttributes['to'];
if(is_array($variableValue) || $variableValue instanceof \Traversable)
{
$resultHtml = '';
foreach($variableValue as $value)
{
$body = new static(['CONTENT' => $node->getInnerHTML()]);
$document = new Document($body);
$document->setValues([$innerVariableName => $value]);
$resultHtml .= $document->render();
}
$this->replaceCommand($node, $resultHtml);
}
else
{
$this->replaceCommand($node, '');
}
}
else
{
$this->replaceCommand($node, '');
}
}
/**
* Returns array of noe attributes.
*
* @param Node $node
* @return array
*/
protected static function getNodeAttributes(Node $node)
{
$attributes = [];
if($node->hasAttributes())
{
foreach($node->getAttributes() as $attr)
{
/* @var $attr Attr*/
$attributes = array_merge($attributes, $attr->toArray());
}
}
return $attributes;
}
/**
* Replace $node inner HTML with $html.
*
* @param Node $node
* @param string $html
*/
protected function replaceCommand(Node $node, $html)
{
$parentNodeHtml = $node->getParentNode()->getInnerHTML();
$resultHtml = str_replace($node->getOuterHTML(), $html, $parentNodeHtml);
$node->getParentNode()->setInnerHTML($resultHtml);
}
/**
* @return string
*/
public static function getLangName()
{
return 'Html';
}
/**
* @return string
*/
public function getFileMimeType()
{
return 'text/html';
}
}