// Custom Widget - Display posts from a specific category
// Version: 1.2
// Author: Terry Mun
// Author URI: http://www.teddy-o-ted.com/

// Load Custom Theme Widgets
function custom_widgets() {
	register_widget('posts_in_category');
}
add_action('widgets_init', 'custom_widgets');

class posts_in_category extends WP_Widget {

	// Custom Theme Widget: Display posts from a specific category
	function posts_in_category() {
		$widget_ops = array( 'classname' => 'posts-in-category', 'description' => __('A widget that displays posts from a specific category', 'posts-in-category') );
		$control_ops = array( 'width' => 300, 'height' => 350, 'id_base' => 'posts-in-category-widget' );
		$this->WP_Widget( 'posts-in-category-widget', __('List Posts in a Specific Category', 'posts-in-category'), $widget_ops, $control_ops );
	}

	// Displaying widget on screen
	function widget($args, $instance) {
		extract($args);
		$title = apply_filters('widget_title', $instance['title'] );
		$category_id = $instance['category_id'];
		$post_count_limit = $instance['post_count_limit'];
		$post_orderby = $instance['post_orderby'];
		$post_offset = $instance['post_offset'];
		echo $before_widget;
		if ($title) {
			echo $before_title . $title . $after_title;
		}
		$category_posts = get_posts('category=' . $category_id . '&numberposts=' . $post_count_limit . '&orderby=' . $post_orderby . '&offset= ' . $post_offset . '');
		if ($category_posts) {
			$category_posts_result .= '<ul>';
			foreach($category_posts as $post) {
				$category_posts_result .= '<li><a href="' . get_permalink($post->ID) . '">' . $post->post_title . '</a></li>';
			}
			$category_posts_result .= '</ul>';
		}
		else {
			$category_posts_result .= "No posts found in this category";
		}
		echo $category_posts_result;
		echo $after_widget;
	}

	// Update widget settings
	function update($new_instance, $old_instance) {
		$instance = $old_instance;
		$instance['title'] = strip_tags($new_instance['title']);
		$instance['category_id'] = strip_tags($new_instance['category_id']);
		$instance['post_count_limit'] = strip_tags($new_instance['post_count_limit']);
		$instance['post_offset'] = strip_tags($new_instance['post_offset']);
		$instance['post_orderby'] = $new_instance['post_orderby'];
		return $instance;
	}

	// Widget setting controls
	function form($instance) {
		$defaults = array('title' => __('Category Name', 'posts-in-category'), 'category_id' => __('1', 'posts-in-category'), 'post_count_limit' => __('5', 'posts-in-category'), 'post_orderby' => 'date', 'post_offset' => __('0', 'posts-in-category'));
		$instance = wp_parse_args((array) $instance, $defaults); ?>
		<p>
			<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e('Title:', 'posts-in-category'); ?></label>
			<input id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" value="<?php echo $instance['title']; ?>" style="width:100%;" />
		</p>
		<p>
			<label for="<?php echo $this->get_field_id('category_id'); ?>"><?php _e('Category ID:', 'posts-in-category'); ?></label>
			<input id="<?php echo $this->get_field_id('category_id'); ?>" name="<?php echo $this->get_field_name('category_id'); ?>" value="<?php echo $instance['category_id']; ?>" style="width: 100%;" />
		</p>
		<p>
			<label for="<?php echo $this->get_field_id('post_count_limit'); ?>"><?php _e('Post Count Limit:', 'posts-in-category'); ?></label>
			<input id="<?php echo $this->get_field_id('post_count_limit'); ?>" name="<?php echo $this->get_field_name('post_count_limit'); ?>" value="<?php echo $instance['post_count_limit']; ?>" style="width: 100%;" />
		</p>
		<p>
			<label for="<?php echo $this->get_field_id('post_offset'); ?>"><?php _e('Offset:', 'posts-in-category'); ?></label>
			<input id="<?php echo $this->get_field_id('post_offset'); ?>" name="<?php echo $this->get_field_name('post_offset'); ?>" value="<?php echo $instance['post_offset']; ?>" style="width: 100%;" />
		</p>
		<p>
			<label for="<?php echo $this->get_field_id('post_orderby'); ?>"><?php _e('Order Posts By:', 'posts-in-category'); ?></label>
			<select id="<?php echo $this->get_field_id('post_orderby'); ?>" name="<?php echo $this->get_field_name('post_orderby'); ?>" class="widefat" style="width:100%;">
				<option <?php if ( 'author' == $instance['format'] ) echo 'selected="selected"'; ?>>author</option>
				<option <?php if ( 'date' == $instance['format'] ) echo 'selected="selected"'; ?>>date</option>
				<option <?php if ( 'title' == $instance['format'] ) echo 'selected="selected"'; ?>>title</option>
				<option <?php if ( 'modified' == $instance['format'] ) echo 'selected="selected"'; ?>>modified</option>
				<option <?php if ( 'parent' == $instance['format'] ) echo 'selected="selected"'; ?>>parent</option>
				<option <?php if ( 'ID' == $instance['format'] ) echo 'selected="selected"'; ?>>ID</option>
				<option <?php if ( 'rand' == $instance['format'] ) echo 'selected="selected"'; ?>>rand</option>
			</select>
		</p>

	<?php
	}
}