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<?php

/**
 * @package     Joomla.Site
 * @subpackage  Layout
 *
 * @copyright   (C) 2013 Open Source Matters, Inc.
<https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see
LICENSE.txt
 */

defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\HTML\HTMLHelper;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Layout\LayoutHelper;

$app       = Factory::getApplication();
$form      = $displayData->getForm();
$fieldSets = $form->getFieldsets();
$helper    = $displayData->get('useCoreUI', false) ?
'uitab' : 'bootstrap';

if (empty($fieldSets)) {
    return;
}

$ignoreFieldsets = $displayData->get('ignore_fieldsets') ?:
[];
$outputFieldsets = $displayData->get('output_fieldsets') ?:
[];
$ignoreFieldsetFields =
$displayData->get('ignore_fieldset_fields') ?: [];
$ignoreFields    = $displayData->get('ignore_fields') ?: [];
$extraFields     = $displayData->get('extra_fields') ?: [];
$tabName         = $displayData->get('tab_name') ?:
'myTab';

// These are required to preserve data on save when fields are not
displayed.
$hiddenFieldsets = $displayData->get('hiddenFieldsets') ?: [];

// These are required to configure showing and hiding fields in the editor.
$configFieldsets = $displayData->get('configFieldsets') ?: [];

// Handle the hidden fieldsets when show_options is set false
if (!$displayData->get('show_options', 1)) {
    // The HTML buffer
    $html   = [];

    // Loop over the fieldsets
    foreach ($fieldSets as $name => $fieldSet) {
        // Check if the fieldset should be ignored
        if (in_array($name, $ignoreFieldsets, true)) {
            continue;
        }

        // If it is a hidden fieldset, render the inputs
        if (in_array($name, $hiddenFieldsets)) {
            // Loop over the fields
            foreach ($form->getFieldset($name) as $field) {
                // Add only the input on the buffer
                $html[] = $field->input;
            }

            // Make sure the fieldset is not rendered twice
            $ignoreFieldsets[] = $name;
        }

        // Check if it is the correct fieldset to ignore
        if (strpos($name, 'basic') === 0) {
            // Ignore only the fieldsets which are defined by the options
not the custom fields ones
            $ignoreFieldsets[] = $name;
        }
    }

    // Echo the hidden fieldsets
    echo implode('', $html);
}

$opentab = false;

$xml = $form->getXml();

// Loop again over the fieldsets
foreach ($fieldSets as $name => $fieldSet) {
    // Ensure any fieldsets we don't want to show are skipped
(including repeating formfield fieldsets)
    if (
        (isset($fieldSet->repeat) && $fieldSet->repeat ===
true)
        || in_array($name, $ignoreFieldsets)
        || (!empty($configFieldsets) && in_array($name,
$configFieldsets, true))
        || (!empty($hiddenFieldsets) && in_array($name,
$hiddenFieldsets, true))
    ) {
        continue;
    }

    // Determine the label
    if (!empty($fieldSet->label)) {
        $label = Text::_($fieldSet->label);
    } else {
        $label = strtoupper('JGLOBAL_FIELDSET_' . $name);
        if (Text::_($label) === $label) {
            $label =
strtoupper($app->getInput()->get('option') . '_'
. $name . '_FIELDSET_LABEL');
        }
        $label = Text::_($label);
    }

    $hasChildren  = $xml->xpath('//fieldset[@name="' .
$name . '"]//fieldset[not(ancestor::field/form/*)]');
    $hasParent    =
$xml->xpath('//fieldset//fieldset[@name="' . $name .
'"]');
    $isGrandchild =
$xml->xpath('//fieldset//fieldset//fieldset[@name="' .
$name . '"]');

    if (!$isGrandchild && $hasParent) {
        echo '<fieldset id="fieldset-' . $name .
'" class="options-form ' . (!empty($fieldSet->class)
? $fieldSet->class : '') . '">';
        echo '<legend>' . $label .
'</legend>';

        // Include the description when available
        if (!empty($fieldSet->description)) {
            echo '<div class="alert
alert-info">';
            echo '<span class="icon-info-circle"
aria-hidden="true"></span><span
class="visually-hidden">' . Text::_('INFO') .
'</span> ';
            echo Text::_($fieldSet->description);
            echo '</div>';
        }

        echo '<div class="form-grid">';
    } elseif (!$hasParent) {
        // Tabs
        if ($opentab) {
            if ($opentab > 1) {
                echo '</div>';
                echo '</fieldset>';
            }

            // End previous tab
            echo HTMLHelper::_($helper . '.endTab');
        }

        // Start the tab
        echo HTMLHelper::_($helper . '.addTab', $tabName,
'attrib-' . $name, $label);

        $opentab = 1;

        // Directly add a fieldset if we have no children
        if (!$hasChildren) {
            echo '<fieldset id="fieldset-' . $name .
'" class="options-form ' . (!empty($fieldSet->class)
? $fieldSet->class : '') . '">';
            echo '<legend>' . $label .
'</legend>';

            // Include the description when available
            if (!empty($fieldSet->description)) {
                echo '<div class="alert
alert-info">';
                echo '<span class="icon-info-circle"
aria-hidden="true"></span><span
class="visually-hidden">' . Text::_('INFO') .
'</span> ';
                echo Text::_($fieldSet->description);
                echo '</div>';
            }

            echo '<div class="form-grid">';

            $opentab = 2;
        } elseif (!empty($fieldSet->description)) {
            // Include the description when available
            echo '<div class="alert alert-info
alert-parent">';
            echo '<span class="icon-info-circle"
aria-hidden="true"></span><span
class="visually-hidden">' . Text::_('INFO') .
'</span> ';
            echo Text::_($fieldSet->description);
            echo '</div>';
        }
    }

    // We're on the deepest level => output fields
    if (!$hasChildren) {
        // The name of the fieldset to render
        $displayData->fieldset = $name;

        // Force to show the options
        $displayData->showOptions = true;

        // Render the fieldset
        echo LayoutHelper::render('joomla.edit.fieldset',
$displayData);
    }

    // Close open fieldset
    if (!$isGrandchild && $hasParent) {
        echo '</div>';
        echo '</fieldset>';
    }
}

if ($opentab) {
    if ($opentab > 1) {
        echo '</div>';
        echo '</fieldset>';
    }

    // End previous tab
    echo HTMLHelper::_($helper . '.endTab');
}