Location: PHPKode > projects > Community Learning Network > cln/lib/CLN/LayoutParser.php
<?php
/*
 * LayoutParser Class
 *
 * Copyright (c) 2003-4 St. Christopher House
 *
 * Developed by The Working Group Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * @version $Id: LayoutParser.php,v 1.53 2005/01/18 19:40:56 darcy Exp $
 *
 */

require_once 'SimpleXMLParser.php';

class LayoutParser extends SimpleXMLParser {
	var $lastTag;
	var $counter;
	var $blocksExist = FALSE;
	var $layoutType;

    function tag_open($parser, $tag, $attributes)
    {
    	// PAGE tags
		if ($tag == 'PAGE' || $tag == 'TUTORIAL' || $tag == 'NEWSLETTER') {
			$this->content .= "\n<!-- BEGIN ".$tag." LAYOUT -->\n";
			$this->layoutType = $tag;
		}

		// NEW tags
		//else if ($tag == 'NEW') {
		//	$this->content .= "<div class=\"layoutRow layoutNew\"><div class=\"layoutColumn\">\n";
		//}

		// ROW tags
		else if ($tag == 'ROW') {
			$attr = '';
			while(list($key,$value) = each($attributes)) {
				$attr .= ' '.$key.'="'.$value.'"';
			}
			$attr .= ' class="layoutRow"';

			$this->content .= '<div'.$attr.">\n";
		}

		// COLUMN tags
		else if ($tag == 'COLUMN') {
			if(!isset($this->counter)) $this->counter = 0;
			$this->counter++;

			$attr = '';
			while(list($key,$value) = each($attributes)) {
				if($key == 'TYPE') {
					continue;
				}
				else if($key == 'WIDTH') {
					//if($value == '100%') $value = '98%';
					//if($value == '50%') $value = '49%';
					$attr .= ' style="width:'.$value.'"';
				}
				else {
					$attr .= ' '.$key.'="'.$value.'"';
				}
			}
			$attr .= ' id="column'.$this->counter.'" class="layoutColumn"';

			$this->content .= ' <div'.$attr.">\n";

			// setup test to see if there are any blocks in this column
			$this->blocksExistForLevel = FALSE;
		}

		// BLOCK tags
		else if($tag == 'BLOCK') {
			$this->blocksExist = TRUE;
			$this->blocksExistForLevel = TRUE;

			$this->content .= "  <!-- START BLOCK -->\n";

			$block =& new $GLOBALS['classes']['ko']['classname']($attributes['KOID']);

			if($_SESSION['editMode'] == 'edit' && !$this->layoutType != 'PAGE') {
				$class = ' editBlockMode';

				// gets publish status
				/*$status = $block->getStatus();
				if ($status == 0) {
					$class .= ' unpublishedKO';
				}
				else if ($status == 1) {
					$class .= ' outOfDateKO';
				}
				else if ($status == 2) {
					$class .= ' publishedKO';
				}*/
			} else {
				$class = '';
			}


			if(isset($this->lastTag) && $this->lastTag != $tag) {
				$this->content .= '  <div class="layoutBlock firstBlock'.$class."\">\n".$block->getContent()."\n";
			} else {
				$this->content .= '  <div class="layoutBlock'.$class."\">\n".$block->getContent()."\n";
			}
		}
    }

    function cdata($parser, $cdata)
    {
    	if(!empty($cdata)) {
			$this->content .= $cdata;
		}
    }

    function tag_close($parser, $tag)
    {
    	$this->lastTag = $tag;

		// PAGE tags
		if ($tag == 'PAGE' || $tag == 'TUTORIAL' || $tag == 'NEWSLETTER') {
			if(!$this->blocksExist && $tag == 'PAGE') {
				// turned off default block
				//$block =& new $GLOBALS['classes']['ko']['classname'](CLN_DEFAULT_BLOCK_ID);
				//$this->content .= "  <div class=\"layoutBlock\">\n".$block->getContent()."</div>\n";
				//$this->content .= 'There are no blocks on this page.';
				PEAR::raiseError('This page is under construction and has no published blocks on it.<br/><br/>'
								.'If you are working on this page, edit the page to add block(s).<br/><br/>'
								.'If you are not working on this page, check back here soon.', E_USER_NOTICE);
			}
			$this->content .= "<!-- END LAYOUT -->\n";
		}

		// NEW tags
		//else if ($tag == 'NEW') {
		//	$this->content .= " <br class=\"anchor\"></div>\n</div>\n";
		//}

		// ROW tags
		else if ($tag == 'ROW') {
			$this->content .= '<br class="anchor" />'."</div>\n";
		}

		// COLUMN tags
		else if ($tag == 'COLUMN') {
			if(!$this->blocksExistForLevel) {
				$this->content .= "&nbsp;\n";
			}
			$this->content .= " </div>\n";
		}

		// BLOCK tags
		else if($tag == 'BLOCK') {
			$this->content .= '</div>'."\n".'<!-- END BLOCK -->'."\n";
		}

    }

} // end of class xml

?>
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