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Editing: wp1s-widget.php

<?php
defined('ABSPATH') or die("No script kiddies please!");
class WP1S_Widget extends WP_Widget {

public function __construct() {
            parent::__construct('wp1s_Widget', 'WP 1 Slider', array('description' => __('WP1S Slideshow Widget', 'wp-1-slider')));
        }

/**
     * Front-end display of widget.
     *
     * @see WP_Widget::widget()
     *
     * @param array $args     Widget arguments.
     * @param array $instance Saved values from database.
     */
    public function widget($args, $instance) {

echo $args['before_widget'];
        echo '<div class="wp1s-widget-wrap">';
        if (!empty($instance['title'])) {
            echo $args['before_title'] . apply_filters('widget_title', $instance['title']) . $args['after_title'];
        }
        $slider_id = isset($instance['slider_id'])?$instance['slider_id']:'';
        echo do_shortcode("[wp1s id='". $slider_id."']");
        echo '</div>';
      echo $args['after_widget'];
    }

/**
     * Back-end widget form.
     *
     * @see WP_Widget::form()
     *
     * @param array $instance Previously saved values from database.
     */
    public function form($instance) {
        global $post;
        $title = isset($instance['title'])?$instance['title']:'';
        $id = isset($instance['slider_id'])?$instance['slider_id']:'';
        ?>
        <p>
            <label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:', 'wp-1-slider'); ?></label> 
            <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>"/>
        </p>
        <p>
            <label for="<?php echo $this->get_field_id('slider_id'); ?>"><?php _e('Select slider:', 'wp-1-slider'); ?></label>
              <select name="<?php echo $this->get_field_name('slider_id'); ?>" class='widefat' id="<?php echo $this->get_field_id('slider_id'); ?>" type="text">
                       <?php $slider_id = get_terms('slider_id',array('order'=>'ASC','orderby'=>'id'));
                       $args = array(
                    'post_type'     => 'wp1slider',
                    'post_status'       => 'publish',
                    'posts_per_page'=>  -1
                    
                                    
            );
            $posts = get_posts( $args );
              if(!empty($posts))
              {
                
                   foreach($posts as $post)
                { 
                  ?>

<option value="<?php echo $post->ID;?>" <?php if($post->ID==$id){?>selected="selected"<?php }?>><?php echo $post->post_title;?></option>

<?php 
                }
              }$post
              ?>
            </select>
        </p>
 <?php
    }
     /**
     * Sanitize widget form values as they are saved.
     *
     * @see WP_Widget::update()
     *
     * @param array $new_instance Values just sent to be saved.
     * @param array $old_instance Previously saved values from database.
     *
     * @return array Updated safe values to be saved.
     */
    public function update($new_instance, $old_instance) {

$instance = $old_instance;
        $instance['title'] = isset($new_instance['title'])?strip_tags($new_instance['title']):'';
        $instance['slider_id'] = isset($new_instance['slider_id'])?strip_tags($new_instance['slider_id']):'';
        return $instance;
    }

}

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