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declare(strict_types=1);
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declare(strict_types=1);
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namespace core\output;
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use renderer_base;
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namespace core\output;
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/**
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/**
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 * A single-select combobox widget that is functionally similar to an HTML select element.
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 * A single-select combobox widget that is functionally similar to an HTML select element.
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 *
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 *
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 * @package   core
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 * @package   core
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 * @category  output
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 * @category  output
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 * @copyright 2022 Shamim Rezaie <shamim@moodle.com>
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 * @copyright 2022 Shamim Rezaie <shamim@moodle.com>
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 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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 */
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class select_menu implements \renderable, \templatable {
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class select_menu implements renderable, templatable {
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    /** @var array List of options. */
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    /** @var array List of options. */
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    protected $label;
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    protected $label;
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    /** @var array Button label's attributes */
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    /** @var array Button label's attributes */
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    protected $labelattributes = [];
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    /** @var bool Whether the label is inline or not */
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    protected $labelattributes = [];
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    protected $inlinelabel = false;
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    /** @var string Name of the combobox element */
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    /** @var string Name of the combobox element */
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    protected $name;
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    protected $name;
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    /**
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    /**
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     * select_menu constructor.
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     * select_menu constructor.
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     *
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     *
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     * @param string $name Name of the combobox element
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     * @param string $name Name of the combobox element
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     * @param array $options List of options in an associative array format like ['val' => 'Option'].
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     * @param array $options List of options in an associative array format like ['val' => 'Option'].
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     *                       Supports grouped options as well.
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     *                       Supports grouped options as well. Empty string or null values will be rendered as dividers.
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     * @param string|null $selected The value of the preselected option.
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     * @param string|null $selected The value of the preselected option.
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     */
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     */
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    public function __construct(string $name, array $options, string $selected = null) {
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    public function __construct(string $name, array $options, ?string $selected = null) {
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        $this->name = $name;
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        $this->name = $name;
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        $this->options = $options;
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        $this->options = $options;
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        $this->selected = $selected;
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        $this->selected = $selected;
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    }
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    }
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    /**
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    /**
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     * Sets the select menu's label.
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     * Sets the select menu's label.
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     *
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     *
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     * @param string $label The label.
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     * @param string $label The label.
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     * @param array $attributes List of attributes to apply on the label element.
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     * @param array $attributes List of attributes to apply on the label element.
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     * @param bool $inlinelabel Whether the label is inline or not.
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     */
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     */
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    public function set_label(string $label, array $attributes = [], bool $inlinelabel = false) {
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    public function set_label(string $label, array $attributes = []) {
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        $this->label = $label;
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        $this->label = $label;
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        $this->labelattributes = $attributes;
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        $this->labelattributes = $attributes;
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        $this->inlinelabel = $inlinelabel;
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                    if (!isset($flattened[$groupname])) {
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                    if (!isset($flattened[$groupname])) {
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                        $flattened[$groupname] = [
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                        $flattened[$groupname] = [
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                            'name' => $groupname,
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                            'name' => $groupname,
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                            'isgroup' => true,
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                            'isgroup' => true,
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                            'id' => \html_writer::random_id('select-menu-group'),
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                            'id' => \html_writer::random_id('select-menu-group'),
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                            'options' => []
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                            'options' => [],
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                        ];
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                        ];
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                    }
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                    }
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                    foreach ($optoptions as $optvalue => $optoption) {
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                    foreach ($optoptions as $optvalue => $optoption) {
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                        if (empty($optoption)) {
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                            $flattened[$groupname]['options'][$optvalue] = ['isdivider' => true];
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                        } else {
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                        $flattened[$groupname]['options'][$optvalue] = [
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                            $flattened[$groupname]['options'][$optvalue] = [
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                            'name' => $optoption,
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                                'name' => $optoption,
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                            'value' => $optvalue,
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                                'value' => $optvalue,
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                            'selected' => $this->selected == $optvalue,
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                                'selected' => $this->selected == $optvalue,
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                            'id' => \html_writer::random_id('select-menu-option'),
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                                'id' => \html_writer::random_id('select-menu-option'),
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                            ];
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                        ];
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                        }
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                    }
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                    }
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                }
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                }
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            } else {
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            } else {
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                if (empty($option)) {
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                    $flattened[$value] = ['isdivider' => true];
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                } else {
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                $flattened[$value] = [
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                    $flattened[$value] = [
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                    'name' => $option,
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                        'name' => $option,
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                    'value' => $value,
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                        'value' => $value,
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                    'selected' => $this->selected == $value,
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                        'selected' => $this->selected == $value,
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                    'id' => \html_writer::random_id('select-menu-option'),
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                        'id' => \html_writer::random_id('select-menu-option'),
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                    ];
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                ];
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                }
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            }
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            }
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        }
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        }
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        // Make non-associative array.
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        // Make non-associative array.
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     */
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     */
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    public function export_for_template(renderer_base $output): \stdClass {
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    public function export_for_template(renderer_base $output): \stdClass {
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        $data = new \stdClass();
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        $data = new \stdClass();
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        $data->baseid = \html_writer::random_id('select-menu');
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        $data->baseid = \html_writer::random_id('select-menu');
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        $data->label = $this->label;
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        $data->label = $this->label;
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        $data->inlinelabel = $this->inlinelabel;
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        $data->options = $this->flatten_options();
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        $data->options = $this->flatten_options();
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        $data->selectedoption = $this->get_selected_option();
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        $data->selectedoption = $this->get_selected_option();
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        $data->name = $this->name;
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        $data->name = $this->name;
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        $data->value = $this->selected;
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        $data->value = $this->selected;