From edf96ccb5c3ede11261d77c7bc6656fd22ff096f Mon Sep 17 00:00:00 2001
From: "Alex A. Naanou" <alex.nanou@gmail.com>
Date: Sat, 26 Jan 2019 04:48:36 +0300
Subject: [PATCH] tweaking and notes...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
---
 ui (gen4)/lib/widget/browse2.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/ui (gen4)/lib/widget/browse2.js b/ui (gen4)/lib/widget/browse2.js
index 39c51ddb..f9289784 100755
--- a/ui (gen4)/lib/widget/browse2.js	
+++ b/ui (gen4)/lib/widget/browse2.js	
@@ -181,13 +181,17 @@ var BaseBrowserPrototype = {
 	},
 
 
+	// Renderers...
+	//
 	// Render main list...
 	renderList: function(items, options){
 		return items },
 	// Render nested list...
+	// NOTE: to skip rendering an item/list return null...
 	renderSubList: function(item, rendered, options){
 		return rendered },
 	// Render list item...
+	// NOTE: to skip rendering an item/list return null...
 	renderItem: function(item, i, options){
 		return item },
 
@@ -237,7 +241,8 @@ var BaseBrowserPrototype = {
 							item.value.render(context), 
 							options)
 					: that.renderItem(item, i, options) }) 
-			.flat()
+			.filter(function(e){
+				return e != null })
 
 		// determine the render mode...
 		return context.root === this ?
@@ -289,6 +294,7 @@ var BrowserClassPrototype = {
 	__proto__: BaseBrowser,
 }
 
+// XXX maintain expand/collapse state of nested lists in a natural way...
 var BrowserPrototype = {
 	__proto__: BaseBrowser.prototype,
 
@@ -301,10 +307,12 @@ var BrowserPrototype = {
 	// Render main list...
 	// XXX update dom...
 	renderList: function(items, options){
+		// XXX maintain header...
 		return items },
 	// Render nested list...
 	// XXX save link to dom (???)
 	renderSubList: function(item, rendered, options){
+		// XXX expand/collapse state???
 		return rendered },
 	// Render list item...
 	// XXX save link to dom in item.dom (???)