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lib/symfony/vendor/propel/om/PreOrderNodeIterator.php

@@ -0,0 +1,90 @@
+<?php
+
+/*
+ *  $Id: PreOrderNodeIterator.php 536 2007-01-10 14:30:38Z heltem $
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information please see
+ * <http://propel.phpdb.org>.
+ */
+
+/**
+ * Pre-order node iterator for Node objects.
+ *
+ * @author     Dave Lawson <dlawson@masterytech.com>
+ * @version    $Revision: 536 $
+ * @package    propel.om
+ */
+class PreOrderNodeIterator implements Iterator
+{
+	private $topNode = null;
+
+	private $curNode = null;
+
+	private $querydb = false;
+
+	private $con = null;
+
+	public function __construct($node, $opts) {
+		$this->topNode = $node;
+		$this->curNode = $node;
+
+		if (isset($opts['con']))
+			$this->con = $opts['con'];
+
+		if (isset($opts['querydb']))
+			$this->querydb = $opts['querydb'];
+	}
+
+	public function rewind() {
+		$this->curNode = $this->topNode;
+	}
+
+	public function valid() {
+		return ($this->curNode !== null);
+	}
+
+	public function current() {
+		return $this->curNode;
+	}
+
+	public function key() {
+		return $this->curNode->getNodePath();
+	}
+
+	public function next() {
+
+		if ($this->valid())
+		{
+			$nextNode = $this->curNode->getFirstChildNode($this->querydb, $this->con);
+
+			while ($nextNode === null)
+			{
+				if ($this->curNode === null || $this->curNode->equals($this->topNode))
+					break;
+
+				$nextNode = $this->curNode->getSiblingNode(false, $this->querydb, $this->con);
+
+				if ($nextNode === null)
+					$this->curNode = $this->curNode->getParentNode($this->querydb, $this->con);
+			}
+
+			$this->curNode = $nextNode;
+		}
+
+		return $this->curNode;
+	}
+
+}