woocommerce/admin/woocommerce-admin-taxonomies.php

<?php
/**
 * Functions used for taxonomies in admin 
 *
 * These functions control admin interface bits like category ordering.
 *
 * @author 		WooThemes
 * @category 	Admin
 * @package 	WooCommerce
 */

/**
 * Category thumbnails
 */
add_action('product_cat_add_form_fields', 'woocommerce_add_category_thumbnail_field');
add_action('product_cat_edit_form_fields', 'woocommerce_edit_category_thumbnail_field', 10,2);

function woocommerce_add_category_thumbnail_field() {
	global $woocommerce;
	?>
	<div class="form-field">
		<label><?php _e('Thumbnail', 'woocommerce'); ?></label>
		<div id="product_cat_thumbnail" style="float:left;margin-right:10px;"><img src="<?php echo woocommerce_placeholder_img_src(); ?>" width="60px" height="60px" /></div>
		<div style="line-height:60px;">
			<input type="hidden" id="product_cat_thumbnail_id" name="product_cat_thumbnail_id" />
			<button type="submit" class="upload_image_button button"><?php _e('Upload/Add image', 'woocommerce'); ?></button>
			<button type="submit" class="remove_image_button button"><?php _e('Remove image', 'woocommerce'); ?></button>
		</div>
		<script type="text/javascript">
			
			window.send_to_editor_default = window.send_to_editor;

			window.send_to_termmeta = function(html) {
				
				jQuery('body').append('<div id="temp_image">' + html + '</div>');
				
				var img = jQuery('#temp_image').find('img');
				
				imgurl 		= img.attr('src');
				imgclass 	= img.attr('class');
				imgid		= parseInt(imgclass.replace(/\D/g, ''), 10);
				
				jQuery('#product_cat_thumbnail_id').val(imgid);
				jQuery('#product_cat_thumbnail img').attr('src', imgurl);
				jQuery('#temp_image').remove();
				
				tb_remove();
				
				window.send_to_editor = window.send_to_editor_default;
			}
			
			jQuery('.upload_image_button').live('click', function(){
				var post_id = 0;
				
				window.send_to_editor = window.send_to_termmeta;
				
				tb_show('', 'media-upload.php?post_id=' + post_id + '&amp;type=image&amp;TB_iframe=true');
				return false;
			});
			
			jQuery('.remove_image_button').live('click', function(){
				jQuery('#product_cat_thumbnail img').attr('src', '<?php echo woocommerce_placeholder_img_src(); ?>');
				jQuery('#product_cat_thumbnail_id').val('');
				return false;
			});
			
		</script>
		<div class="clear"></div>
	</div>
	<?php
}

function woocommerce_edit_category_thumbnail_field( $term, $taxonomy ) {
	global $woocommerce;
	
	$image 			= '';
	$thumbnail_id 	= get_woocommerce_term_meta( $term->term_id, 'thumbnail_id', true );
	if ($thumbnail_id) :
		$image = wp_get_attachment_url( $thumbnail_id );
	else :
		$image = woocommerce_placeholder_img_src();
	endif;
	?>
	<tr class="form-field">
		<th scope="row" valign="top"><label><?php _e('Thumbnail', 'woocommerce'); ?></label></th>
		<td>
			<div id="product_cat_thumbnail" style="float:left;margin-right:10px;"><img src="<?php echo $image; ?>" width="60px" height="60px" /></div>
			<div style="line-height:60px;">
				<input type="hidden" id="product_cat_thumbnail_id" name="product_cat_thumbnail_id" value="<?php echo $thumbnail_id; ?>" />
				<button type="submit" class="upload_image_button button"><?php _e('Upload/Add image', 'woocommerce'); ?></button>
				<button type="submit" class="remove_image_button button"><?php _e('Remove image', 'woocommerce'); ?></button>
			</div>
			<script type="text/javascript">
				
				window.send_to_termmeta = function(html) {
					
					jQuery('body').append('<div id="temp_image">' + html + '</div>');
					
					var img = jQuery('#temp_image').find('img');
					
					imgurl 		= img.attr('src');
					imgclass 	= img.attr('class');
					imgid		= parseInt(imgclass.replace(/\D/g, ''), 10);
					
					jQuery('#product_cat_thumbnail_id').val(imgid);
					jQuery('#product_cat_thumbnail img').attr('src', imgurl);
					jQuery('#temp_image').remove();
					
					tb_remove();
				}
				
				jQuery('.upload_image_button').live('click', function(){
					var post_id = 0;
					
					window.send_to_editor = window.send_to_termmeta;
					
					tb_show('', 'media-upload.php?post_id=' + post_id + '&amp;type=image&amp;TB_iframe=true');
					return false;
				});
				
				jQuery('.remove_image_button').live('click', function(){
					jQuery('#product_cat_thumbnail img').attr('src', '<?php echo woocommerce_placeholder_img_src(); ?>');
					jQuery('#product_cat_thumbnail_id').val('');
					return false;
				});
				
			</script>
			<div class="clear"></div>
		</td>
	</tr>
	<?php
}

add_action('created_term', 'woocommerce_category_thumbnail_field_save', 10,3);
add_action('edit_term', 'woocommerce_category_thumbnail_field_save', 10,3);

function woocommerce_category_thumbnail_field_save( $term_id, $tt_id, $taxonomy ) {
	if (isset($_POST['product_cat_thumbnail_id'])) {
		update_woocommerce_term_meta($term_id, 'thumbnail_id', $_POST['product_cat_thumbnail_id']);
    }
}

/**
 * Description for product_cat page
 */
add_action('product_cat_pre_add_form', 'woocommerce_product_cat_description');

function woocommerce_product_cat_description() {

	echo wpautop(__('Product categories for your store can be managed here. To change the order of categories on the front-end you can drag and drop to sort them. To see more categories listed click the "screen options" link at the top of the page.', 'woocommerce'));

}

/**
 * Description for shipping class page
 */
add_action('product_shipping_class_pre_add_form', 'woocommerce_shipping_class_description');

function woocommerce_shipping_class_description() {

	echo wpautop(__('Shipping classes can be used to group products of similar type. These groups can then be used by certain shipping methods to provide different rates to different products.', 'woocommerce'));

}

/**
 * Fix for per_page option
 * Trac: http://core.trac.wordpress.org/ticket/19465
 */
add_filter('edit_posts_per_page', 'woocommerce_fix_edit_posts_per_page', 1, 2);

function woocommerce_fix_edit_posts_per_page( $per_page, $post_type ) {
	
	if ($post_type!=='product') return $per_page;
	
	$screen = get_current_screen();
	
	if (strstr($screen->id, '-')) {
	
		$option = 'edit_' . str_replace('edit-', '', $screen->id) . '_per_page';
		
		if (isset($_POST['wp_screen_options']['option']) && $_POST['wp_screen_options']['option'] == $option ) :
			
			update_user_meta( get_current_user_id(), $option, $_POST['wp_screen_options']['value'] );
			
			wp_redirect( remove_query_arg( array('pagenum', 'apage', 'paged'), wp_get_referer() ) );
			exit;

		endif;
		
		$user_per_page = (int) get_user_meta( get_current_user_id(), $option, true );
		
		if ($user_per_page) $per_page = $user_per_page;
		
	}
	
	return $per_page;
}

/**
 * Thumbnail column for categories
 */
 add_filter("manage_edit-product_cat_columns", 'woocommerce_product_cat_columns');
 add_filter("manage_product_cat_custom_column", 'woocommerce_product_cat_column', 10, 3);	
  
 function woocommerce_product_cat_columns( $columns ) {
 	$new_columns = array();
 	$new_columns['cb'] = $columns['cb'];
 	$new_columns['thumb'] = __('Image', 'woocommerce');
 	unset($columns['cb']);
 	$columns = array_merge( $new_columns, $columns );
 	return $columns;
 }
 
 function woocommerce_product_cat_column( $columns, $column, $id ) {
 	if ($column=='thumb') :
 		global $woocommerce;
 		
 		$image 			= '';
 		$thumbnail_id 	= get_woocommerce_term_meta( $id, 'thumbnail_id', true );
 		if ($thumbnail_id) :
 			$image = wp_get_attachment_url( $thumbnail_id );
 		else :
 			$image = woocommerce_placeholder_img_src();
 		endif;
 		
 		$columns .= '<img src="'.$image.'" alt="Thumbnail" class="wp-post-image" height="48" width="48" />';
 	
 	endif;
 	
 	return $columns;	
 }

/**
 * Configure button for shipping classes page
 */
 add_filter("manage_edit-product_shipping_class_columns", 'woocommerce_shipping_class_columns');
 add_filter("manage_product_shipping_class_custom_column", 'woocommerce_shipping_class_column', 10, 3);	
  
 function woocommerce_shipping_class_columns( $columns ) {
 	$columns['configure'] = '&nbsp;';
 	return $columns;
 }
 
 function woocommerce_shipping_class_column( $columns, $column, $id ) {
 	if ($column=='configure') $columns .= '<a href="'. admin_url( 'edit-tags.php?action=edit&taxonomy=product_shipping_class&tag_ID='. $id .'&post_type=product' ) .'" class="button alignright">'.__('Configure shipping class', 'woocommerce').'</a>';
 	
 	return $columns;	
 }