updated journalling -- needs testing...

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

ui (gen4)/features/base.js

@@ -1802,6 +1802,7 @@ module.CropActions = actions.Actions({
 	// 		...after we remove images from a crop we lose their containing 
 	// 		ribbon information and the order might get messed up by 
 	// 		horizontal shifting if not undone correctly...
+	// 		...add a way to store additional info in the journal...
 	// XXX undo -- .removeFromCrop(..) but only the gids that were 
 	// 		actually added... (???)
 	addToCrop: ['- Crop/',
@@ -1865,7 +1866,14 @@ module.CropActions = actions.Actions({
 		}],
 	// XXX undo -- need containing ribbon info per gid to undo correctly...
 	removeFromCrop: ['Crop|Image/Remove from crop',
-		{browseMode: 'uncrop'},
+		core.doc`
+		`,
+		{
+			browseMode: 'uncrop',
+			// XXX group gid - ribbon
+			//getUndoState: function(data){ },
+			//undo: function(data){},
+		},
 		function(gids){
 			var that = this
 			if(!this.cropped){

ui (gen4)/features/core.js

@@ -620,6 +620,11 @@ module.Util = ImageGridFeatures.Feature({
 // XXX need to define a clear journaling strategy in the lines of:
 // 		- save state clears journal and adds a state load action
 // 		- .load(..) clears journal
+// XXX need a way to store additional info in the journal...
+// 		can either be done as: 
+// 			- a hook (action handler and/or attr)
+// 			- inline code inside the action...
+//		can't say I like #2 as it will mess the code up...
 // XXX needs careful testing...
 var JournalActions = actions.Actions({
 
@@ -638,6 +643,10 @@ var JournalActions = actions.Actions({
 
 	journalable: null,
 
+	// XXX doc supported attrs:
+	// 		undo
+	// 		undoable
+	//		getUndoState
 	// XXX should the action have control over what gets journaled and how???
 	updateJournalableActions: ['System/Update list of journalable actions',
 		function(){
@@ -665,6 +674,12 @@ var JournalActions = actions.Actions({
 						return
 					}
 
+					// get additional undo state...
+					var update = that.getActionAttr(action, 'getUndoState')
+					update 
+						&& update instanceof Function
+						&& update.call(that, data)
+
 					// journal after the action is done...
 					return function(){ this.journalPush(data) }
 				}