New Extender: breadcrumbs

<?php

/*
 * Title: Breadcrumbs
 * Purpose:
 *  	Legacy support for the [+breadcrumbs+] placeholder
*/

$placeholders['breadcrumbs'] = array("breadcrumbs","bcDetermineBreadcrumbs","");

$bcStartID = isset($bcStartID) ? $bcStartID : $parents;
 /*
	Param: bcStartID

	Purpose:
	ID of the start site for the breadcrumbs navigation.
	If set to '0', the breadcrumbs naviagtion will start from the root.
	If not set, breadcrumbs navigation will start from the parent site as defiend in the ditto call with &parents=``.
	If more than one parents site are defined, navigation will start from the root.

	Options:
	A valid document ID.
	
	Default:
	$parents
*/

$bcRootName = isset($bcRootName) ? $bcRootName : 'Home';
 /*
	Param: bcRootName

	Purpose:
	Name to be shown for the root folder

	Options:
	A valid string.

	Default:
	"Home"
*/

$bcTpl = isset($bcTpl)? template::fetch($bcTpl) : '<a href="[+bcLink+]"><i>[+bcName+]</i></a> <span style="color:#FF7400;">»</span> ';
/*
	Param: bcTpl

	Purpose:
	Template for the crumbs of the breadcrumbs.
	Placeholders to be used are:
	[+bcID+] : ID of the folder/site. Is empty if root folder.
	[+bcLink+] : Link to the folder/site. Can be used as href="[+bcLink+]".
	[+bcName+] : Name of the folder/site (=pagetitle).

	Options:
	A valid chunk name

	Default:
	"<a href="[+bcLink+]"><i>[+bcName+]</i></a> <span style="color:#FF7400;">»</span> "
*/

$bcTplFirst = isset($bcTplFirst)? template::fetch($bcTplFirst) : $bcTpl;

/*
	Param: bcTplFirst

	Purpose:
	Template for the first crumb of the breadcrumbs.
	Placeholders to be used are:
	[+bcID+] : ID of the folder/site. Is empty if root folder.
	[+bcLink+] : Link to the folder/site. Can be used as href="[+bcLink+]".
	[+bcName+] : Name of the site (=pagetitle).
	
	Options:
	A valid chunk name

	Default:
	$bcTpl
*/

$bcTplLast = isset($bcTplLast)? template::fetch($bcTplLast) : '<a href="[+bcLink+]"><b>[+bcName+]</b></a>';
/*
	Param: bcTplLast

	Purpose:
	Template for the last crumb of the breadcrumbs.
	Placeholders to be used are:
	[+bcID+] : ID of the folder/site. Is empty if root folder.
	[+bcLink+] : Link to the folder/site. Can be used as href="[+bcLink+]".
	[+bcName+] : Name of the site (=pagetitle).
	
	Options:
	A valid chunk name

	Default:
	"<a href="[+bcLink+]"><b>[+bcName+]</b></a>"
*/

$GLOBALS['ditto_breadcrumbs_params'] = compact('bcStartID','bcRootName','bcTpl','bcTplFirst','bcTplLast');

// ---------------------------------------------------
// Breadcrumbs Functions
// ---------------------------------------------------

if (!function_exists("bcDetermineBreadcrumbs")) {
	function bcDetermineBreadcrumbs($resource) {
		global $modx;
		global $ditto_breadcrumbs_params;
		$id = $resource['id'];
		$link = '[~'.$id.'~]';
		$name = $resource['pagetitle'];
		$newcrumb = $ditto_breadcrumbs_params['bcTplLast'];
		$newcrumb = str_replace('[+bcID+]',$id,$newcrumb);
		$newcrumb = str_replace('[+bcLink+]',$link,$newcrumb);
		$newcrumb = str_replace('[+bcName+]',$name,$newcrumb);
		$output = $newcrumb;
		do {
			$parentID = bcGetDocuments(array($id),1,0,'parent');
			$parentTitle = bcGetDocuments($parentID[0],1,0,'pagetitle');
			$id = isset($parentID[0]['parent'])? $parentID[0]['parent'] : '0';
			if (($id==$ditto_breadcrumbs_params['bcStartID']) OR ($id=='0')){
				if ($id=='0'){unset($id);}
				$link = isset($id)? '[~'.$id.'~]' : '/';
				$name = isset($parentTitle[0]['pagetitle'])? $parentTitle[0]['pagetitle'] : $ditto_breadcrumbs_params['bcRootName'];
				$newcrumb = $ditto_breadcrumbs_params['bcTplFirst'];
				$newcrumb = str_replace('[+bcID+]',$id,$newcrumb);
				$newcrumb = str_replace('[+bcLink+]',$link,$newcrumb);
				$newcrumb = str_replace('[+bcName+]',$name,$newcrumb);
				$output = $newcrumb . $output;
				break;
			}
			$link = '[~'.$id.'~]';
			$name = $parentTitle[0]['pagetitle'];
			$newcrumb = $ditto_breadcrumbs_params['bcTpl'];
			$newcrumb = str_replace('[+bcID+]',$id,$newcrumb);
			$newcrumb = str_replace('[+bcLink+]',$link,$newcrumb);
			$newcrumb = str_replace('[+bcName+]',$name,$newcrumb);
			$output = $newcrumb . $output;
		} while (1);
		return $output;
	}
}

if (!function_exists("bcGetDocuments")) {
	function bcGetDocuments($ids= array (), $published= 1, $deleted= 0, $fields= "*", $where= '', $sort= "menuindex", $dir= "ASC", $limit= "") {
		global $modx;
		if (count($ids) == 0) {
			return false;
        }
		else {
			$limit= ($limit != "") ? "LIMIT $limit" : ""; // LIMIT capabilities - rad14701
            $tblsc= $modx->getFullTableName("site_content");
            $tbldg= $modx->getFullTableName("document_groups");
            // modify field names to use sc. table reference
            $fields= 'sc.' . implode(',sc.', preg_replace("/^\s/i", "", explode(',', $fields)));
            $sort= ($sort == "") ? "" : 'sc.' . implode(',sc.', preg_replace("/^\s/i", "", explode(',', $sort)));
            if ($where != '')
                $where= 'AND ' . $where;
            // get document groups for current user
            if ($docgrp= $modx->getUserDocGroups())
                $docgrp= implode(",", $docgrp);
            $sql= "SELECT DISTINCT $fields FROM $tblsc sc
                    LEFT JOIN $tbldg dg on dg.document = sc.id
                    WHERE (sc.id IN (" . join($ids, ",") . ") AND sc.published=$published AND sc.deleted=$deleted $where)
                   GROUP BY sc.id " .
             ($sort ? " ORDER BY $sort $dir" : "") . " $limit ";
            $result= $modx->dbQuery($sql);
            $resourceArray= array ();
            for ($i= 0; $i < @ $modx->recordCount($result); $i++) {
                array_push($resourceArray, @ $modx->fetchRow($result));
            }
            return $resourceArray;
        }
    }
}
?>