<?php
/* --------------------------------------------------------------------------
* XIRE - eXtendable Information Rendering Engine
* --------------------------------------------------------------------------
* LICENSE
* Copyright (C) 2006 David Duong
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* -------------------------------------------------------------------------- */
/**
* Provides branching functionality
*/
class XIRE_Plugin_If extends XIRE_Plugin {
private $branched;
// Only allow DOMElement
// @todo support DOMAttr
public function __construct (DOMElement $node, XIRE_Process $sender) {
parent::__construct($node, $sender);
$this->branched = false;
}
public function execute () {
$current = $this->node;
// Seek other else-if or else elements for a suitable branch
do {
$next = $current->nextSibling;
if (!$this->branched) {
if ($current->localName === 'else') {
$this->branch($current);
} elseif ($current->childNodes->length > 0) {
// @TODO improve this
$this->getVariable_cascade($current->getAttribute('variable')) and $this->branch($current);
}
}
$current->parentNode->removeChild($current); // Remove the current node
$current = $next;
} while($current instanceof DOMNode
&& $current->namespaceURI === XIRL_NAMESPACE
&& ($current->localName === 'else-if'
|| $current->localName === 'else'));
}
public function branch (DOMNode $branch) {
// Proccess the child nodes
$process = $this->template->createProcess();
foreach ($branch->childNodes as $node) {
$process->enqueue($node);
}
// Process the nodes
$process->process();
while ($branch->hasChildNodes()) {
$branch->parentNode->insertBefore($branch->firstChild, $branch);
}
$this->branched = true;
}
}
?>
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