Bug 353284

Description Johan Schulz 2011-07-28 03:41:36 EDT

Build Identifier: M20110210-1200

There is currently only dragging between sections implemented. Any plans on implementing DnD between GanttGroups?

We use the GanttChart in a tree like model

Section A
   |_ GanttGroup -> [GanttEvents]
   |_ GanttGroup -> [GanttEvents]
   |_ GanttGroup -> [GanttEvents]

Section B 
   |_ GanttGroup -> [GanttEvents]
   |_ GanttGroup -> [GanttEvents]
   |_ GanttGroup -> [GanttEvents]

and want to drag e.g. one event from section B group 1 to section A group 2. 
Currently there is no chance to identify an GanttGroup, so my first enhancement would be to add either an _data object to GanttGroup or at least an _id field to find the correct group later on.


The problem arises in GanttComposite.getSurroundingVerticalEvents if you have all your events organized in above structure because there is no check if the IGanttChartItem is an GanttGroup. All events are casted to an GanttEvent and so he cant find out the top element. This causes some NPE later on.

So either add checks and disallow dragging or if possible add DnD capabilities for groups :)
+1 for second 



Regards

Johan






Reproducible: Always

Steps to Reproduce:
1. create event structure described in details
2. allow dragging between sections
3. drag one event from one group in a section to another section