class.ParagraphStyleSelector.php

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<?php

use ILIAS\COPage\Editor\Server\UIWrapper;
use ILIAS\UI\Component\Dropdown\Dropdown;

class ParagraphStyleSelector
{
    public static string $style_selector_reset = "margin-top:2px; margin-bottom:2px; text-indent:0px; position:static; float:none; width: auto;";
    protected int $style_id = 0;

    protected UIWrapper $ui_wrapper;
    protected \ILIAS\DI\UIServices $ui;

    public function __construct(
        UIWrapper $ui_wrapper,
        int $style_id
    ) {
        global $DIC;

        $this->ui = $DIC->ui();
        $this->ui_wrapper = $ui_wrapper;
        $this->style_id = $style_id;
    }

    public function getStyleSelector(
        string $a_selected,
        string $type = "par-action",
        string $action = "par.class",
        string $attr = "class"
    ): Dropdown {
        $a_chars = \ilPCParagraphGUI::_getCharacteristics($this->style_id);
        $ui_wrapper = $this->ui_wrapper;
        $ui = $this->ui;
        $buttons = [];
        foreach ($a_chars as $char => $char_lang) {
            $t = "text_block";
            $tag = "p";
            switch ($char) {
                case "Headline1": $t = "heading1";
                    $tag = "h1";
                    break;
                case "Headline2": $t = "heading2";
                    $tag = "h2";
                    break;
                case "Headline3": $t = "heading3";
                    $tag = "h3";
                    break;
            }
            $html = '<div class="ilCOPgEditStyleSelectionItem"><' . $tag . ' class="ilc_' . $t . '_' . $char . '" style="' . self::$style_selector_reset . '">' . $char_lang . "</" . $tag . "></div>";
            $buttons[] = $ui_wrapper->getButton($html, $type, $action, [$attr => $char]);
        }
        $dd = $ui->factory()->dropdown()->standard($buttons)->withLabel($a_selected);
        return $dd;
    }
}