<?php

/*******************************************************************************

 * Copyright (c) 2014 Eclipse Foundation and others.

 * All rights reserved. This program and the accompanying materials

 * are made available under the terms of the Eclipse Public License v1.0

 * which accompanies this distribution, and is available at

 * http://www.eclipse.org/legal/epl-v10.html

 *

 * Contributors:

 *    Denis Roy (Eclipse Foundation)- initial API and implementation

 *******************************************************************************/

require_once($_SERVER['DOCUMENT_ROOT'] . "/eclipse.org-common/system/menuitem.class.php");

class Breadcrumb extends Menu {

	private $CrumbList = array();

	# static list of first-level URIs with corresponding display-friendly names

	# everything outside of this is considered to be in project space 

	private $FirstLevel = array(

			"committers"	=> "Committers",

			"downloads"		=> "Downloads",

			"membership"	=> "Membership",

			"newsgroups"	=> "Forums",

			"org" 			=> "About Us",

			"projects"		=> "Projects",

			"users"			=> "Users"

	);

	function getCrumbList() {

		return $this->CrumbList;

	}

	function setCrumbList($_List) {

		$this->CrumbList = $_List;

	}

	# Main constructor

	function Breadcrumb() {

		$www_prefix = "";

		global $App;

		if(!isset($App)) {

			$App = new App();

		}

		$www_prefix = $App->getWWWPrefix();

		# Default: Home

		$this->addCrumb("Home", $www_prefix . "/", "_self");

		if(isset($_SERVER['REQUEST_URI'])) {

			http://www.eclipse.org/newsgroups/test.php

			# Array ( [0] => [1] => newsgroups [2] => test.php )

			$items = explode("/", $_SERVER['REQUEST_URI']);

			# Examine Item 1 (first level URL)

			if(isset($this->FirstLevel[$items[1]])) {

				$this->addCrumb($this->FirstLevel[$items[1]], $www_prefix . "/" . $items[1], "_self");

			}

			else {

				# Not pre-defined Foundation page, must be a project page

				# /xtext/file.php => Home > Projects > xtext > $pageTitle

				$this->addCrumb("Project", $www_prefix . "/projects/", "_self");

				$this->addCrumb($items[1], $www_prefix . "/" . $items[1], "_self");

			}

			# Add current page

			# AT this point, $pageTitle should be set as we are running in header()

			global $pageTitle;

			if(isset($pageTitle)) {

				$title = $pageTitle;

				# consider truncating $pageTitle if it's too long

				if(strlen($title) > 35) {

					$title = substr($title, 0, 35) . "...";

				} 

				$this->addCrumb($pageTitle, NULL, NULL);

			}

			else {

				# Add final generic crumb

				$this->addCrumb("Document", NULL, NULL);

			}

		}

	}

	function addCrumb($_Text, $_URL, $_Target) {

		# Menu Items must be added at position 1

		$Crumb = new Link($_Text, $_URL, $_Target, 0);

		# Add incoming menuitem

		$this->CrumbList[count($this->CrumbList)] = $Crumb;

	}

	function getCrumbCount() {

		return count($this->CrumbList);

	}

	function getCrumbAt($_Pos) {

		if($_Pos < $this->getCrumbCount()) {

			return $this->CrumbList[$_Pos];

		}

	}

	/**

	 * Insert breadcrumb at a specific position

	 * @param unknown $_Pos Position to insert at

	 * @param unknown $_Text Link text

	 * @param unknown $_URL Link URL

	 * @param unknown $_Target Link target

	 * 

	 */

	function insertCrumbAt($_Pos, $_Text, $_URL, $_Target) {

		if($_Pos < $this->getCrumbCount() && $_Pos > 0) {  # Don't allow inserting before Home

			$Crumb = new Link($_Text, $_URL, $_Target, 0);

			$tempList = array($Crumb);

			$result = array_merge(array_slice($this->CrumbList, 0, $_Pos, true), $tempList, array_slice($this->CrumbList, $_Pos, $this->getCrumbCount(), true));

			$this->CrumbList = $result;

		}

		else {

			$this->addCrumb($_Text, $_URL, $_Target);

		}

	}

	function showBreadcrumbs() {

		# for debugging purposes only

		echo "Breadcrumbs: ";

		foreach ($this->CrumbList as $Crumb) {

			# $Crumb is a Link object

			echo "<a href='" . $Crumb->getURL() . "'>" . $Crumb->getText() . "</a>";

			echo " | " ; 

		}

	}

}

?>