Rebuild EDD [downloads] shortcode in theme/plugin

gistfile1.php

<?php
/*
 * remove the default [downloads] shortcode from Easy Digital Downloads
 * and then rebuild it with full control
 */

// remove default EDD [downloads] shortcode
remove_shortcode( 'downloads' );

// rebuild [downloads] shortcode
function my_custom_edd_downloads_query( $atts, $content = null ) {
	extract( shortcode_atts( array(
			'category'         => '',
			'exclude_category' => '',
			'tags'             => '',
			'exclude_tags'     => '',
			'relation'         => 'AND',
			'number'           => 10,
			'price'            => 'no',
			'excerpt'          => 'yes',
			'full_content'     => 'no',
			'buy_button'       => 'yes',
			'columns'          => 3,
			'thumbnails'       => 'true',
			'orderby'          => 'post_date',
			'order'            => 'DESC',
			'ids'              => ''
		), $atts, 'downloads' )
	);

	$query = array(
		'post_type'      => 'download',
		'posts_per_page' => (int) $number,
		'orderby'        => $orderby,
		'order'          => $order
	);

	if ( $query['posts_per_page'] < -1 ) {
		$query['posts_per_page'] = abs( $query['posts_per_page'] );
	}

	switch ( $orderby ) {
		case 'price':
			$orderby           = 'meta_value';
			$query['meta_key'] = 'edd_price';
			$query['orderby']  = 'meta_value_num';
		break;

		case 'title':
			$query['orderby'] = 'title';
		break;

		case 'id':
			$query['orderby'] = 'ID';
		break;

		case 'random':
			$query['orderby'] = 'rand';
		break;

		default:
			$query['orderby'] = 'post_date';
		break;
	}

	if ( $tags || $category || $exclude_category || $exclude_tags ) {
		$query['tax_query'] = array(
			'relation'     => $relation
		);

		if ( $tags ) {
			$query['tax_query'][] = array(
				'taxonomy' => 'download_tag',
				'terms'    => explode( ',', $tags ),
				'field'    => 'slug'
			);
		}

		if ( $category ) {
			$query['tax_query'][] = array(
				'taxonomy' => 'download_category',
				'terms'    => explode( ',', $category ),
				'field'    => 'slug'
			);
		}

		if ( $exclude_category ) {
			$query['tax_query'][] = array(
				'taxonomy' => 'download_category',
				'terms'    => explode( ',', $exclude_category ),
				'field'    => 'slug',
				'operator' => 'NOT IN',
			);
		}

		if ( $exclude_tags ) {
			$query['tax_query'][] = array(
				'taxonomy' => 'download_tag',
				'terms'    => explode( ',', $exclude_tags ),
				'field'    => 'slug',
				'operator' => 'NOT IN',
			);
		}
	}

	if( ! empty( $ids ) )
		$query['post__in'] = explode( ',', $ids );

	if ( get_query_var( 'paged' ) )
		$query['paged'] = get_query_var('paged');
	else if ( get_query_var( 'page' ) )
		$query['paged'] = get_query_var( 'page' );
	else
		$query['paged'] = 1;

	switch( intval( $columns ) ) :
	    case 0:
	        $column_width = 'inherit'; break;
		case 1:
			$column_width = '100%'; break;
		case 2:
			$column_width = '50%'; break;
		case 3:
			$column_width = '33%'; break;
		case 4:
			$column_width = '25%'; break;
		case 5:
			$column_width = '20%'; break;
		case 6:
			$column_width = '16.6%'; break;
	endswitch;

	// Allow the query to be manipulated by other plugins
	$query = apply_filters( 'edd_downloads_query', $query, $atts );

	$downloads = new WP_Query( $query );
	if ( $downloads->have_posts() ) :
		$i = 1;
		$wrapper_class = 'edd_download_columns_' . $columns;
		ob_start(); ?>
		<div class="edd_downloads_list <?php echo apply_filters( 'edd_downloads_list_wrapper_class', $wrapper_class, $atts ); ?>">
			<?php while ( $downloads->have_posts() ) : $downloads->the_post(); ?>
				<div itemscope itemtype="http://schema.org/Product" class="<?php echo apply_filters( 'edd_download_class', 'edd_download', get_the_ID(), $atts, $i ); ?>" id="edd_download_<?php echo get_the_ID(); ?>" style="width: <?php echo $column_width; ?>; float: left;">
					<div class="edd_download_inner">
						<?php

						do_action( 'edd_download_before' );

						if ( 'false' != $thumbnails ) :
							edd_get_template_part( 'shortcode', 'content-image' );
						endif;

						edd_get_template_part( 'shortcode', 'content-title' );

						if ( $excerpt == 'yes' && $full_content != 'yes' )
							edd_get_template_part( 'shortcode', 'content-excerpt' );
						else if ( $full_content == 'yes' )
							edd_get_template_part( 'shortcode', 'content-full' );

						if ( $price == 'yes' )
							edd_get_template_part( 'shortcode', 'content-price' );

						if ( $buy_button == 'yes' )
							edd_get_template_part( 'shortcode', 'content-cart-button' );

						do_action( 'edd_download_after' );

						?>
					</div>
				</div>
				<?php if ( $columns != 0 && $i % $columns == 0 ) { ?><div style="clear:both;"></div><?php } ?>
			<?php $i++; endwhile; ?>

			<div style="clear:both;"></div>

			<?php wp_reset_postdata(); ?>

			<div id="edd_download_pagination" class="navigation">
				<?php
				if ( is_single() ) {
					echo paginate_links( array(
						'base'    => get_permalink() . '%#%',
						'format'  => '?paged=%#%',
						'current' => max( 1, $query['paged'] ),
						'total'   => $downloads->max_num_pages
					) );
				} else {
					$big = 999999;
					echo paginate_links( array(
						'base'    => str_replace( $big, '%#%', esc_url( get_pagenum_link( $big ) ) ),
						'format'  => '?paged=%#%',
						'current' => max( 1, $query['paged'] ),
						'total'   => $downloads->max_num_pages
					) );
				}
				?>
			</div>

		</div>
		<?php
		$display = ob_get_clean();
	else:
		$display = sprintf( _x( 'No %s found', 'download post type name', 'edd' ), edd_get_label_plural() );
	endif;

	return apply_filters( 'downloads_shortcode', $display, $atts, $buy_button, $columns, $column_width, $downloads, $excerpt, $full_content, $price, $thumbnails, $query );
}
add_shortcode( 'downloads', 'my_custom_edd_downloads_query' );