165 lines
3.5 KiB
PHP
165 lines
3.5 KiB
PHP
<?php
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/**
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* @author Tassos Marinos <info@tassos.gr>
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* @link https://www.tassos.gr
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* @copyright Copyright © 2024 Tassos All Rights Reserved
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* @license GNU GPLv3 <http://www.gnu.org/licenses/gpl.html> or later
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*/
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use \NRFramework\HTML;
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defined('_JEXEC') or die;
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use Joomla\CMS\Form\FormField;
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use Joomla\CMS\Factory;
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abstract class JFormFieldNRTreeSelect extends FormField
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{
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/**
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* Database object
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*
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* @var object
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*/
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public $db;
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/**
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* Indicates whether the options array should be sorted before render.
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*
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* @var boolean
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*/
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protected $sortTree = false;
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/**
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* Indicates whether the options array should have the levels re-calculated
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*
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* @var boolean
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*/
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protected $fixLevels = false;
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/**
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* Increase the value(ID) of the category by one.
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* This happens because we have a parent category "Bussiness Directory" that pushes-in the indentation
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* and we reset it by decreasing the value, level and parent.
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*
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* @var boolean
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*/
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protected $increaseValue = false;
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/**
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* Output the HTML for the field
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*/
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protected function getInput()
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{
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$this->db = Factory::getDbo();
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$options = $this->getOptions();
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if ($this->sortTree)
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{
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$options = $this->sortTreeSelectOptions($options);
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}
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if ($this->fixLevels)
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{
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$options = $this->fixLevels($options);
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}
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if ($this->increaseValue)
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{
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// Increase by 1 the value(ID) of the category
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foreach ($options as $key => $value)
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{
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$options[$key]->value+=1;
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}
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}
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return HTML::treeselect($options, $this->name, $this->value, $this->id);
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}
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/**
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* Sorts treeselect options
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*
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* @param array $options
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* @param int $parent_id
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*
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* @return array
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*/
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protected function sortTreeSelectOptions($options, $parent_id = 0)
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{
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if (empty($options))
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{
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return [];
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}
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$result = [];
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$sub_options = array_filter($options, function($option) use($parent_id)
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{
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return $option->parent == $parent_id;
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});
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foreach ($sub_options as $option)
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{
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$result[] = $option;
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$result = array_merge($result, $this->sortTreeSelectOptions($options, $option->value));
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}
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return $result;
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}
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/**
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* Fixes the levels of the categories
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*
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* @param array $categories
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*
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* @return array
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*/
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protected function fixLevels($cats)
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{
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// new categories
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$categories = [];
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// get category levels
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foreach ($cats as $c)
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{
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$level = 0;
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$parent_id = (int)$c->parent;
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while ($parent_id)
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{
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$level++;
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$parent_id = $this->getNextParentId($cats, $parent_id);
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}
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$c->level = $level;
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$categories[] = $c;
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}
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return $categories;
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}
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/**
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* Returns the next parent id
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* Helper method for getCategories
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*
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* @return int
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*/
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protected function getNextParentId($categories, $current_pid)
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{
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foreach($categories as $c)
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{
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if ((int)$c->value === $current_pid)
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{
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return (int)$c->parent;
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}
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}
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}
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/**
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* Get tree options as an Array of objects
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* Each object should have the attributes: value, text, parent, level, disable
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*
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* @return object
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*/
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abstract protected function getOptions();
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} |