Widget.php

<?php
/**
 * Copyright (c) 2012      Oliver Seidel (email : oliver.seidel @ deliciousdays.com)
 * Copyright (c) 2014-2017 Bastian Germann
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
namespace Cforms2;

class Widget extends \WP_Widget {

    public function __construct() {
        parent::__construct(
                'cforms', __('cformsII', 'cforms2'), array(
            'description' => __('Add any cforms form to your sidebar', 'cforms2')
                ), array('width' => 200, 'height' => 200)
        );

    }

    /**
     * Outputs the content of the widget
     *
     * @param array $args
     * @param array $instance
     */
    public function widget($args, $instance) {
        $no = ($instance['form'] == '1') ? '' : $instance['form'];

        echo $args['before_widget'];
        if (!empty($instance['title']))
            echo $args['before_title'] . apply_filters('widget_title', $instance['title']) . $args['after_title'];
        insert_cform($no);
        echo $args['after_widget'];

    }

    /**
     * Outputs the options form on admin
     *
     * @param array $instance The widget options
     */
    public function form($instance) {

        // stored data
        $title = isset($instance['title']) ? $instance['title'] : '';
        $form = isset($instance['form']) ? $instance['form'] : null;


        $opt = '';
        $forms = count(FormSettings::forms());
        for ($i = 1; $i <= $forms; $i++) {
            $no = ($i == 1) ? '' : ($i);
            $selected = ( $i == $form ) ? ' selected="selected"' : '';
            $name = stripslashes(FormSettings::form($no)->name());
            $name = (strlen($name) > 40) ? substr($name, 0, 40) . '&#133' : $name;
            $opt .= '<option value="' . $i . '"' . $selected . '>' . $name . '</option>';
        }

        echo '<label for="' . $this->get_field_id('title') . '">' . __('Title', 'cforms2') . ':</label>' .
        '<input type="text" id="' . $this->get_field_id('title') . '" name="' . $this->get_field_name('title') . '" value="' . esc_attr($title) . '" /><br />';

        echo '<label for="' . $this->get_field_id('form') . '">' . __('Form', 'cforms2') . ':</label>' .
        '<select id="' . $this->get_field_id('form') . '" name="' . $this->get_field_name('form') . '">' . $opt . '</select>';

    }

    /**
     * Processing widget options on save
     *
     * @param array $new_instance The new options
     * @param array $old_instance The previous options
     */
    public function update($new_instance, $old_instance) {
        $check = array('title', 'form');
        $instance = array();
        foreach ($check as $value) {
            if (empty($new_instance[$value])) {
                $instance[$value] = '';
            } else {
                $instance[$value] = strip_tags($new_instance[$value]);
            }
        }

        return $instance;

    }

}