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Implementing a Tree Component
uTree component is an excellent use case to examine
ØPowerful navigational aide
ØIncludes a lot of functionality
ØCan be broken down into simple discrete actions
(expanding a node, selecting a
node, and right-clicking a node)
uDevelop a service to support each functionality
ØAllows tree component to communicate with the system
back-end and perform the
appropriate actions.
uDefine tree component as an interface instead of as an
instance of an implementation in
another framework
ØProvides flexibility to determine the look-and-feel of
the front-end
ØAllows selection of appropriate architecture for
front-end/middle tier/back-end.
ØAbility to plug in substitutes for each tier without
refactoring entire system.
ØOnly some core components need to be modified to work
with substituted section.
