the sub-context experiment finally working... still thinking...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>

ui (gen4)/features/examples.js

@@ -934,11 +934,11 @@ var ExampleUIActions = actions.Actions({
 						return that.features.features.length })
 
 				make.field('A', 'B')
-				make.field.field('C', 'D')
-				make.field.field.field('E', 'F')
+				//make.field.field('C', 'D')
+				//make.field.field.field('E', 'F')
 				make.field.field.field.field('G', 'H')
 
-				//make.field.Toggle('Toggle', 'on')
+				make.field.Toggle('Toggle', 'on')
 
 			}, {
 				cls: 'table-view',

ui (gen4)/features/ui-widgets.js

@@ -960,15 +960,62 @@ module.Dialogs = core.ImageGridFeatures.Feature({
 
 // XXX EXPERIMENTAL...
 //
-//	.makeContext(name[, obj])
-//	.makeContext(name, func[, obj])
+// Make a nested context...
+//
+//	Make a nested context object...
+//	.makeSubContext(name[, obj])
+//		-> context
+//
+//	Make a nested context function...
+//	.makeSubContext(name, func[, obj])
+//		-> context
+//
+//
+// The context inherits from .items / make(..)
+//
+// If the context is callable it will be called in the context of make(..)
+//
+// If the context is constructed recursively it will return self
 //
 //
-// XXX BUGGY...
 // XXX move this to browse???
 // 		...there seems to be no way to make this generic...
-browse.items.makeContext = function(name, obj){
-}
+browse.items.makeSubContext = function(name, obj){
+	// arse args...
+	var args = [...arguments].slice(1)
+	var func = args[0] instanceof Function ?
+		args.shift()
+		: null
+	obj = args.shift()
+
+	var n = '__'+ name
+    Object.defineProperty(this, name, {
+        get: function(){
+			var that = this
+			if(!this.hasOwnProperty(n)){
+				// build the context object...
+				var nested =
+					func ?
+						// NOTE: we always call func(..) in the root context...
+						function(){
+							return func.call(that, ...arguments) }
+					: this instanceof Function ?
+						function(){
+							return root.call(this, ...arguments) }
+					: {}
+				nested.__proto__ = this
+
+				// mixin parent/obj...
+				Object.assign(nested, 
+					this[n] || obj || {})
+
+				// NOTE: this will prevent constructing a nested context
+				//		(see test above)...
+				this[n] = nested[n] = nested
+			}
+			return this[n] }, 
+	})
+	return this[name] }
 
 
 
@@ -994,7 +1041,7 @@ browse.items.makeContext = function(name, obj){
 // 		...and should we break the make(..) convention of passing an arg 
 // 		array for multiple .text blocks, i.e. make([title, value], ...)??
 //browse.items.Field = 
-browse.items.makeContext('field',
+browse.items.makeSubContext('field',
 	function(title, value, options){
 		options = options || {}
 		Object.assign(
@@ -1148,7 +1195,6 @@ function(spec, callback){
 
 
 
-
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
 
 var EditorActions = actions.Actions({