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<?php
/**
* webtrees: online genealogy
* Copyright (C) 2026 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 3 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, see <https://www.gnu.org/licenses/>.
*/
declare(strict_types=1);
namespace Fisharebest\Webtrees\Module;
use Fisharebest\Webtrees\Family;
use Fisharebest\Webtrees\I18N;
use Fisharebest\Webtrees\Individual;
use Fisharebest\Webtrees\Registry;
use Fisharebest\Webtrees\Services\SearchService;
use Fisharebest\Webtrees\Validator;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use function strlen;
use function view;
class DescendancyModule extends AbstractModule implements ModuleSidebarInterface
{
use ModuleSidebarTrait;
private SearchService $search_service;
/**
* @param SearchService $search_service
*/
public function __construct(SearchService $search_service)
{
$this->search_service = $search_service;
}
public function title(): string
{
/* I18N: Name of a module/sidebar */
return I18N::translate('Descendants');
}
public function description(): string
{
/* I18N: Description of the “Descendants” module */
return I18N::translate('A sidebar showing the descendants of an individual.');
}
/**
* The default position for this sidebar. It can be changed in the control panel.
*
* @return int
*/
public function defaultSidebarOrder(): int
{
return 3;
}
/**
* @param ServerRequestInterface $request
*
* @return ResponseInterface
*/
public function getSearchAction(ServerRequestInterface $request): ResponseInterface
{
$tree = Validator::attributes($request)->tree();
$search = Validator::queryParams($request)->string('search');
$html = '';
if (strlen($search) >= 2) {
$html = $this->search_service
->searchIndividualNames([$tree], [$search])
->map(fn (Individual $individual): string => $this->getPersonLi($individual))
->implode('');
}
if ($html !== '') {
$html = '<ul>' . $html . '</ul>';
}
return response($html);
}
/**
* @param ServerRequestInterface $request
*
* @return ResponseInterface
*/
public function getDescendantsAction(ServerRequestInterface $request): ResponseInterface
{
$tree = Validator::attributes($request)->tree();
$xref = Validator::queryParams($request)->isXref()->string('xref');
$individual = Registry::individualFactory()->make($xref, $tree);
if ($individual !== null && $individual->canShow()) {
$html = $this->loadSpouses($individual, 1);
} else {
$html = '';
}
return response($html);
}
/**
* @param Individual $individual
*
* @return bool
*/
public function hasSidebarContent(Individual $individual): bool
{
return true;
}
/**
* Load this sidebar synchronously.
*
* @param Individual $individual
*
* @return string
*/
public function getSidebarContent(Individual $individual): string
{
return view('modules/descendancy/sidebar', [
'individual_list' => $this->getPersonLi($individual, 1),
'tree' => $individual->tree(),
]);
}
/**
* Format an individual in a list.
*
* @param Individual $person
* @param int $generations
*
* @return string
*/
public function getPersonLi(Individual $person, int $generations = 0): string
{
$icon = $generations > 0 ? 'icon-minus' : 'icon-plus';
$lifespan = $person->canShow() ? '(' . $person->lifespan() . ')' : '';
$spouses = $generations > 0 ? $this->loadSpouses($person, 0) : '';
return
'<li class="sb_desc_indi_li">' .
'<a class="sb_desc_indi" href="#" data-wt-href="' . e(route('module', [
'module' => $this->name(),
'action' => 'Descendants',
'tree' => $person->tree()->name(),
'xref' => $person->xref(),
])) . '">' .
'<i class="plusminus ' . $icon . '"></i>' .
'<small>' . view('icons/sex', ['sex' => $person->sex()]) . '</small>' . $person->fullName() . $lifespan .
'</a>' .
'<a href="' . e($person->url()) . '" title="' . strip_tags($person->fullName()) . '">' . view('icons/individual') . '</a>' .
'<div>' . $spouses . '</div>' .
'</li>';
}
/**
* Format a family in a list.
*
* @param Family $family
* @param Individual $person
* @param int $generations
*
* @return string
*/
public function getFamilyLi(Family $family, Individual $person, int $generations = 0): string
{
$spouse = $family->spouse($person);
if ($spouse instanceof Individual) {
$spouse_name = '<small>' . view('icons/sex', ['sex' => $spouse->sex()]) . '</small>' . $spouse->fullName();
$spouse_link = '<a href="' . e($spouse->url()) . '" title="' . strip_tags($spouse->fullName()) . '">' . view('icons/individual') . '</a>';
} else {
$spouse_name = '';
$spouse_link = '';
}
$family_link = '<a href="' . e($family->url()) . '" title="' . strip_tags($family->fullName()) . '">' . view('icons/family') . '</a>';
$marryear = $family->getMarriageYear();
$marr = $marryear ? '<i class="icon-rings"></i>' . $marryear : '';
return
'<li class="sb_desc_indi_li">' .
'<a class="sb_desc_indi" href="#" data-wt-href="#"><i class="plusminus icon-minus"></i>' .
$spouse_name .
$marr .
'</a>' .
$spouse_link .
$family_link .
'<div>' . $this->loadChildren($family, $generations) . '</div>' .
'</li>';
}
/**
* Display spouses.
*
* @param Individual $individual
* @param int $generations
*
* @return string
*/
public function loadSpouses(Individual $individual, int $generations): string
{
$out = '';
if ($individual->canShow()) {
foreach ($individual->spouseFamilies() as $family) {
$out .= $this->getFamilyLi($family, $individual, $generations - 1);
}
}
if ($out !== '') {
return '<ul>' . $out . '</ul>';
}
return '';
}
/**
* Display descendants.
*
* @param Family $family
* @param int $generations
*
* @return string
*/
public function loadChildren(Family $family, int $generations): string
{
$out = '';
if ($family->canShow()) {
$children = $family->children();
if ($children->isNotEmpty()) {
foreach ($children as $child) {
$out .= $this->getPersonLi($child, $generations - 1);
}
} else {
$out .= '<li class="sb_desc_none">' . I18N::translate('No children') . '</li>';
}
}
if ($out !== '') {
return '<ul>' . $out . '</ul>';
}
return '';
}
}
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