//
require_once PHPTAL_DIR.'PHPTAL/Php/Attribute.php';
// TAL Specifications 1.4
//
// argument ::= (['text'] | 'structure') expression
//
// Default behaviour : text
//
// Title
// Title
//
// This element is a comment.
//
require_once PHPTAL_DIR.'PHPTAL/Php/TalesChainExecutor.php';
/**
* @package phptal.php.attribute.tal
* @author Laurent Bedubourg
*/
class PHPTAL_Php_Attribute_TAL_Replace
extends PHPTAL_Php_Attribute
implements PHPTAL_Php_TalesChainReader
{
const REPLACE_VAR = '$__replace__';
public function start()
{
// tal:replace="" => do nothing and ignore node
if (trim($this->expression) == ""){
return;
}
$expression = $this->extractEchoType($this->expression);
$code = $this->tag->generator->evaluateExpression($expression);
// chained expression
if (is_array($code)){
return $this->replaceByChainedExpression($code);
}
// nothing do nothing
if ($code == PHPTAL_TALES_NOTHING_KEYWORD) {
return;
}
// default generate default tag content
if ($code == PHPTAL_TALES_DEFAULT_KEYWORD) {
return $this->generateDefault();
}
// replace tag with result of expression
$this->doEcho($code);
}
public function end()
{
}
private function replaceByChainedExpression($expArray)
{
$executor = new PHPTAL_Php_TalesChainExecutor(
$this->tag->generator, $expArray, $this
);
}
public function talesChainNothingKeyword(PHPTAL_Php_TalesChainExecutor $executor)
{
$executor->continueChain();
}
public function talesChainDefaultKeyword(PHPTAL_Php_TalesChainExecutor $executor)
{
$executor->doElse();
$this->generateDefault();
$executor->breakChain();
}
public function talesChainPart(PHPTAL_Php_TalesChainExecutor $executor, $exp, $islast)
{
$executor->doIf('!phptal_isempty('.self::REPLACE_VAR.' = '.$exp.')');
$this->doEcho(self::REPLACE_VAR);
}
private function generateDefault()
{
$this->tag->generateSurroundHead();
$this->tag->generateHead();
$this->tag->generateContent();
$this->tag->generateFoot();
$this->tag->generateSurroundFoot();
}
}
?>