File: /home/mmickelson/theflexguy.com/wp-content/themes/vanilla/PHPTAL/Php/Attribute/TAL/Attributes.php
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
//
// Copyright (c) 2004-2005 Laurent Bedubourg
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Authors: Laurent Bedubourg <lbedubourg@motion-twin.com>
//
require_once PHPTAL_DIR.'PHPTAL/Php/Attribute.php';
// TAL Specifications 1.4
//
// argument ::= attribute_statement [';' attribute_statement]*
// attribute_statement ::= attribute_name expression
// attribute_name ::= [namespace ':'] Name
// namespace ::= Name
//
// examples:
//
// <a href="/sample/link.html"
// tal:attributes="href here/sub/absolute_url">
// <textarea rows="80" cols="20"
// tal:attributes="rows request/rows;cols request/cols">
//
// IN PHPTAL: attributes will not work on structured replace.
//
require_once PHPTAL_DIR.'PHPTAL/Php/TalesChainExecutor.php';
/**
* @package phptal.php.attribute.tal
* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
*/
class PHPTAL_Php_Attribute_TAL_Attributes
extends PHPTAL_Php_Attribute
implements PHPTAL_Php_TalesChainReader
{
const ATT_FULL_REPLACE = '$__ATT_';
const ATT_VALUE_REPLACE = '$__att_';
// this regex is used to determine if an attribute is entirely replaced
// by a php variable or if only its value is replaced.
const REGEX_FULL_REPLACE = '/<?php echo \$__ATT_.*? ?>/';
public function start()
{
// split attributes using ; delimiter
$attrs = $this->tag->generator->splitExpression($this->expression);
foreach ($attrs as $exp) {
list($attribute, $expression) = $this->parseSetExpression($exp);
if ($expression) {
$this->prepareAttribute($attribute, $expression);
}
}
}
public function end()
{
}
private function prepareAttribute($attribute, $expression)
{
$code = $this->extractEchoType(trim($expression));
$code = $this->tag->generator->evaluateExpression($code);
// if $code is an array then the attribute value is decided by a
// tales chained expression
if (is_array($code)) {
return $this->prepareChainedAttribute2($attribute, $code);
}
// XHTML boolean attribute does not appear when empty of false
if (PHPTAL_Dom_Defs::getInstance()->isBooleanAttribute($attribute)) {
return $this->prepareBooleanAttribute($attribute, $code);
}
// regular attribute which value is the evaluation of $code
$attkey = self::ATT_VALUE_REPLACE . $this->getVarName($attribute);
if ($this->_echoType == PHPTAL_Php_Attribute::ECHO_STRUCTURE)
$value = $code;
else
$value = $this->tag->generator->escapeCode($code);
$this->tag->generator->doSetVar($attkey, $value);
$this->tag->overwriteAttributeWithPhpValue($attribute, $attkey);
}
private function prepareChainedAttribute2($attribute, $chain)
{
$this->_default = false;
$this->_attribute = $attribute;
if (array_key_exists($attribute, $this->tag->attributes)) {
$this->_default = $this->tag->attributes[$attribute];
}
$this->_attkey = self::ATT_FULL_REPLACE.$this->getVarName($attribute);
$executor = new PHPTAL_Php_TalesChainExecutor($this->tag->generator, $chain, $this);
$this->tag->overwriteAttributeWithPhpValue($attribute, $this->_attkey);
}
private function prepareBooleanAttribute($attribute, $code)
{
$attkey = self::ATT_FULL_REPLACE.$this->getVarName($attribute);
$value = "' $attribute=\"$attribute\"'";
$this->tag->generator->doIf($code);
$this->tag->generator->doSetVar($attkey, $value);
$this->tag->generator->doElse();
$this->tag->generator->doSetVar($attkey, '\'\'');
$this->tag->generator->doEnd();
$this->tag->overwriteAttributeWithPhpValue($attribute, $attkey);
}
private function getVarName($attribute)
{
return strtr($attribute,':-', '__');
}
public function talesChainNothingKeyword(PHPTAL_Php_TalesChainExecutor $executor)
{
$executor->doElse();
$this->tag->generator->doSetVar(
$this->_attkey,
"''"
);
$executor->breakChain();
}
public function talesChainDefaultKeyword(PHPTAL_Php_TalesChainExecutor $executor)
{
$executor->doElse();
$code = ($this->_default !== false)
? "' $this->_attribute=\"".str_replace("'",'\\\'',$this->_default)."\"'" // default value
: '\'\''; // do not print attribute
$this->tag->generator->doSetVar($this->_attkey, $code);
$executor->breakChain();
}
public function talesChainPart(PHPTAL_Php_TalesChainExecutor $executor, $exp, $islast)
{
if (!$islast) {
$condition = "!phptal_isempty($this->_attkey = $exp)";
}
else {
$condition = "NULL !== ($this->_attkey = $exp)";
}
$executor->doIf($condition);
if ($this->_echoType == PHPTAL_Php_Attribute::ECHO_STRUCTURE)
$value = $this->_attkey;
else
$value = $this->tag->generator->escapeCode($this->_attkey);
$this->tag->generator->doSetVar($this->_attkey, "' $this->_attribute=\"'.$value.'\"'");
}
}
?>