edit_form.php

<?php

class block_hshcourselist_edit_form extends block_edit_form {

    protected function specific_definition($mform) {
        // Blocktitel
        $mform->addElement('header', 'titlesettings', get_string('blocksettings_title', 'block_hshcourselist'));
        $mform->addElement('selectyesno', 'config_enablecustomheader', get_string('enablecustomheader', 'block_hshcourselist'));
        $mform->setDefault('config_enablecustomheader', 0);
        $mform->addElement('text', 'config_title', get_string('blocktitle', 'block_hshcourselist'));
        $mform->setDefault('config_title', get_string('default_blocktitle', 'block_hshcourselist'));
        $mform->setType('config_title', PARAM_TEXT);

        //Placeholder Text
        $mform->addElement('header', 'placeholdersettings',get_string('placeholder_settings', 'block_hshcourselist'));
        $mform->addElement('text', 'config_placeholder', get_string('placeholder', 'block_hshcourselist'));
        $mform->setDefault('config_placeholder', "");
        $mform->setType('config_placeholder', PARAM_TEXT);

        // Displaysettings
        $mform->addElement('header', 'displaysettings', get_string('blocksettings_display', 'block_hshcourselist'));
        $selectoptions = array(0 => get_string('displayZero', 'block_hshcourselist'),
            1 => get_string('displayOne', 'block_hshcourselist'),
            2 => get_string('displayTwo', 'block_hshcourselist'));
        $mform->addElement('select', 'config_displaymode', get_string('displaymode', 'block_hshcourselist'), $selectoptions);
        $mform->setDefault('config_displaymode', 0);

        $mform->addElement('header', 'footersettings', get_string('blocksettings_footer', 'block_hshcourselist'));
        // Blockfooter
        $mform->addElement('selectyesno', 'config_enablefooter', get_string('enablefooter', 'block_hshcourselist'));
        $mform->setDefault('config_enablefooter', 0);
        $mform->addElement('text', 'config_footer', get_string('blockfooter', 'block_hshcourselist'));
        $mform->setType('config_footer', PARAM_RAW);
    }
}