Hello flexcomponents,
THE IMAGINARY TASK: Display a stack of playing cards in Flex when every card
overlaps with its neighbors. The list of the cards is fetched from
the list-based data provider. The Z-order of cards will be
controlled by setting in AS3:
container.setChildIndex(myCard, container.numChildren-1);
-------------------------------------------------
Many class containers that are shipped with Flex 2 UI framework
(HBox, VBox, TileList) do not allow its children to be overlapped.
Currently I can think of two approaches:
--------------------------------------------------------
a) Use <mx:Canvas> container and attach all content dynamically
to this container in a cycle via "addChild" operand and LAYOUT it via
applying custom layout rules.
Disadvantages: This approach is not reusable in various parts of
the application and projects, also the declarative power of MXML is
not used.
Advantages : Works with list-based data provider via ActionScript
--------------------------------------------------------
b) Create a custom container via extending <mx:Canvas> container.
Use it in combination with data-driven MXML component.
Override "updateDisplayList" method with new custom layouting
rules that allow container children to be overlapped.
Advantages : Reusable сontainer, works with list-based
data provider via MXML.
Disadvantages: Everytime when any from <mx:Repeater> children change its
Z-order,
the <mx:Repeater> resorts its children in order to display its children
starting from lowest Z-order
rank to highest which renders the usage of <mx:Repeater> not usable in
my task.
--
Best regards,
Andriy mailto:[EMAIL PROTECTED]
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