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<?php
// webtrees: Web based Family History software
// Copyright (C) 2014 webtrees development team.
//
// 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
/**
* Class WT_Controller_Chart - Base controller for all chart pages
*/
class WT_Controller_Chart extends WT_Controller_Page {
/** @var WT_Individual Who is chart about? */
public $root;
/** @var string An error message, in case we cannot construct the chart */
public $error_message;
/**
* Create the chart controller
*/
public function __construct() {
parent::__construct();
$rootid = WT_Filter::get('rootid', WT_REGEX_XREF);
$this->root = WT_Individual::getInstance($rootid);
if (!$this->root) {
// Missing root individual? Show the chart for someone.
$this->root = $this->getSignificantIndividual();
}
if (!$this->root || !$this->root->canShowName()) {
http_response_code(404);
$this->error_message = WT_I18N::translate('This individual does not exist or you do not have permission to view it.');
}
}
/**
* Get significant information from this page, to allow other pages such as
* charts and reports to initialise with the same records
*
* @return WT_Individual
*/
public function getSignificantIndividual() {
if ($this->root) {
return $this->root;
} else {
return parent::getSignificantIndividual();
}
}
/**
* Find the direct-line ancestors of an individual. Array indexes are SOSA numbers.
*
* @param integer $generations
*
* @return WT_Individual[]
*/
public function sosaAncestors($generations) {
$ancestors = array(
1 => $this->root
);
// Subtract one generation, as this algorithm includes parents.
$max = pow(2, $generations - 1);
for ($i = 1; $i < $max; $i++) {
$ancestors[$i * 2] = null;
$ancestors[$i * 2 + 1] = null;
$person = $ancestors[$i];
if ($person) {
$family = $person->getPrimaryChildFamily();
if ($family) {
if ($family->getHusband()) {
$ancestors[$i * 2] = $family->getHusband();
}
if ($family->getWife()) {
$ancestors[$i * 2 + 1] = $family->getWife();
}
}
}
}
return $ancestors;
}
}
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