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<?php
/**
*
* EGMapKMLNode Class
*
* KML node base class
*
* @author Antonio Ramirez Cobos
* @link www.ramirezcobos.com
*
*
* @copyright
*
* Copyright (c) 2010 Antonio Ramirez Cobos
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
* and associated documentation files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
* LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
* NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
class EGMapKMLNode {
/**
*
* Tag name
* @var string
*/
public $tag;
/**
*
* Tag id
* @var string
*/
public $tagId;
/**
*
* Tag content
* @var string
*/
public $content;
/**
*
* Tag attributes
* @var array
*/
public $attributes = array();
/**
*
* Child nodes collection
* @var array $nodes
*/
protected $nodes = array(); // children
/**
*
* Class constructor
* @param string $tag name
* @param string $content
*/
public function __construct($tag, $content = null){
$this->tag = $tag;
$this->content = $content;
}
/**
*
* Adds a child node to the tag
* @param EGMapKMLNode $node
*/
public function addChild( EGMapKMLNode $node ){
$this->nodes[] = $node;
}
/**
*
* Clears all added children
*/
public function clearChildren(){
$this->nodes = array();
}
/**
*
* @return well formatted XML KML tags
*/
public function toXML(){
$result = '';
if (is_array($this->attributes))
$this->attributes['id'] = $this->tagId;
else $this->attributes = array();
$result .= CHtml::openTag($this->tag, (is_array($this->attributes)? $this->attributes:array()));
if(null !== $this->content && !empty($this->content))
{
if($this->tag === 'description'){
$result .= '<![CDATA['. $this->content.']]>';
}
else if(is_array($this->content)){
// arrays are separated by carriage return
// they can also be separated by spaces
$result .= implode(PHP_EOL, $this->content);
}
else
$result .= $this->content;
}
$result .= $this->renderChildren();
$result .= CHtml::closeTag($this->tag);
return $result;
}
/**
*
* Renders children tags
*/
protected function renderChildren()
{
$children = '';
if( isset($this->nodes) && is_array($this->nodes) ){
foreach( $this->nodes as $node )
$children .= $node->toXML();
}
return $children;
}
/**
*
* Checks if a node name property has null value
* if not then create a node
* @param string $node
*/
protected function checkNode( $node ){
if(!is_null($this->$node))
$this->nodes[] = new EGMapKMLNode($node, $this->$node);
}
}
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