<?php
/**
 * @author marcus
 * Standard events calendar widget
 */
class EM_Widget_Calendar extends WP_Widget {
	
	var $defaults = array();
	
    /** constructor */
    function EM_Widget_Calendar() {
    	$this->defaults = array(
    		'title' => __('Calendar','dbem'),
    		'long_events' => 0,
    		'category' => 0
    	);
    	$widget_ops = array('description' => __( "Display your events in a calendar widget.", 'dbem') );
        parent::WP_Widget(false, $name = __('Events Calendar','dbem'), $widget_ops);	
    }

    /** @see WP_Widget::widget */
    function widget($args, $instance) {
    	$instance = array_merge($this->defaults, $instance);

    	echo $args['before_widget'];
    	if( !empty($instance['title']) ){
		    echo $args['before_title'];
		    echo apply_filters('widget_title',$instance['title'], $instance, $this->id_base);
		    echo $args['after_title'];
    	}
    	//Shall we show a specific month?
		if ( !empty($_REQUEST['calendar_day']) ) {
			$date = explode('-', $_REQUEST['calendar_day']);
			$instance['month'] = $date[1];
			$instance['year'] = $date[0];
		}else{
			$instance['month'] = date("m");
		}
	    
	    //Our Widget Content  
	    echo EM_Calendar::output(apply_filters('em_widget_calendar_get_args',$instance));
	    
	    echo $args['after_widget'];
    }

    /** @see WP_Widget::update */
    function update($new_instance, $old_instance) {
    	//filter the new instance and replace blanks with defaults
    	$new_instance['title'] = (!isset($new_instance['title'])) ? $this->defaults['title']:$new_instance['title'];
    	$new_instance['long_events'] = ($new_instance['long_events'] == '') ? $this->defaults['long_events']:$new_instance['long_events'];
    	$new_instance['category'] = ($new_instance['category'] == '') ? $this->defaults['category']:$new_instance['category'];
    	return $new_instance;
    }

    /** @see WP_Widget::form */
    function form($instance) {
    	$instance = array_merge($this->defaults, $instance);
        ?>
		<p>
			<label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title', 'dbem'); ?>: </label>
			<input type="text" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php echo esc_attr($instance['title']); ?>" />
		</p>
		<p>
			<label for="<?php echo $this->get_field_id('long_events'); ?>"><?php _e('Show Long Events?', 'dbem'); ?>: </label>
			<input type="checkbox" id="<?php echo $this->get_field_id('long_events'); ?>" name="<?php echo $this->get_field_name('long_events'); ?>" value="1" <?php echo ($instance['long_events'] == '1') ? 'checked="checked"':''; ?>/>
		</p>
		<p>
            <label for="<?php echo $this->get_field_id('category'); ?>"><?php _e('Category IDs','dbem'); ?>: </label>
            <input type="text" id="<?php echo $this->get_field_id('category'); ?>" name="<?php echo $this->get_field_name('category'); ?>" size="3" value="<?php echo esc_attr($instance['category']); ?>" /><br />
            <em><?php _e('1,2,3 or 2 (0 = all)','dbem'); ?> </em>
        </p>
        <?php 
    }

}
add_action('widgets_init', create_function('', 'return register_widget("EM_Widget_Calendar");'));