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Title Seamless Composition and Reuse of Customizable User Interfaces with Spec
Authors Benjamin Van Ryseghem, Stephane Ducasse, Johan Fabry
Publication date December 2014
Abstract Implementing UIs is often a tedious task. To address this,
UI
Builders have been proposed to support the description of widgets, their
location, and their logic. A missing aspect of UI Builders is however the
ability to reuse and compose widget logic. In our experience, this leads to
a significant amount of duplication in UI code. To address this issue, we
built Spec: a UIBuilder for Pharo with a focus on reuse. With Spec, widget
properties are defined declaratively and attached to specific classes known
as composable classes. A composable class defines its own widget description
as well as the model-widget bridge and widget interaction logic. This paper
presents Spec, showing how it enables seamless reuse of widgets and how
these can be customized. After presenting Spec and its implementation, we
discuss how its use in Pharo 2.0 has cut in half the amount of lines of code
of six of its tools, mostly through reuse. This shows that Spec meets its
goals of allowing reuse and composition of widget logic.
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Pages 34-51
Volume 96
Journal name Science of Computer Programming
Publisher Elsevier Science (Amsterdam, The Netherlands)
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