Looking for UI Design Suggestion

Question

I am building a UI for a customizable report application. One
of the options involves selecting a category for each item in a
collection of items. The categories are actually sub-categories.
So, my intial plan was to list the items in a DataGrid, using a
PopUpMenuButton in an itemEditor. It worked ok, but I had to write
custom code to dispatch an item end event, and this was sometimes
causing run-time errors.
So, I'm hoping someone out there can give me some ideas.
Anything will be appreciated.
Thanks.
Eric.

Answer 1

That's what I am doing. I am updating the collection in the
model of my MVC framework. The first time i select an category, it
works fine. The RTE occurs when I try to select a category for
another item. the first menu is displayed, but, when I try to view
a submenu, the button disappears, the first menu disappears, and
when i try to select an item from the submenu, i get this RTE:
Error
at
mx.managers::SystemManager/updateLastActiveForm()[C:\autobuild\3.2.0\frameworks\projects\ framework\src\mx\managers\SystemManager.as:5087]
at
mx.managers::SystemManager/activateForm()[C:\autobuild\3.2.0\frameworks\projects\framewor k\src\mx\managers\SystemManager.as:2352]
at
mx.managers::SystemManager/activate()[C:\autobuild\3.2.0\frameworks\projects\framework\sr c\mx\managers\SystemManager.as:2307]
at
mx.managers::FocusManager/showHandler()[C:\autobuild\3.2.0\frameworks\projects\framework\ src\mx\managers\FocusManager.as:1575]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at
mx.core::UIComponent/dispatchEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src \mx\core\UIComponent.as:9298]
at
mx.controls::Menu/dispatchEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx \controls\Menu.as:1306]
at
mx.core::UIComponent/setVisible()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx \core\UIComponent.as:1914]
at mx.core::UIComponent/set
visible()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:188 2]
at
mx.controls::PopUpButton/menuHideHandler()[C:\autobuild\3.2.0\frameworks\projects\framewo rk\src\mx\controls\PopUpButton.as:1135]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at
mx.core::UIComponent/dispatchEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src \mx\core\UIComponent.as:9298]
at
mx.controls::Menu/dispatchEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx \controls\Menu.as:1306]
at
mx.controls::Menu/hide()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls \Menu.as:1550]
at mx.controls::Menu/
http://www.adobe.com/2006/flex/mx/internal::hideAllMenus()[C:\autobuild\3.2.0\frameworks\p rojects\framework\src\mx\controls\Menu.as:2207
at
mx.controls::Menu/mouseUpHandler()[C:\autobuild\3.2.0\frameworks\projects\framework\src\m x\controls\Menu.as:1687]
See my attached code...