Jérémie Melchior, Donatien Grolaux, Jean Vanderdonckt, Peter Van Roy Researcher at BCHI, Université catholique de Louvain (BELGIUM) EICS July 15

Outline - Motivations Multi-user user interfaces Multi-device environments Multi-platform user interfaces Toolkit for distributed user interfaces Peer-to-Peer distribution Demonstration Future work

Motivations

Multi-user user interfaces User Group System User 1User 2User NU Whenever Wherever

Multi-device environments User 1User 2User NU User Group Device 1Device 2Device ND

Multi-platform user interfaces User 1User 2User NU User Group Device 1Device 2Device ND CP 1CP 2CP N CP 1CP 2CP N CP 1CP 2CP N

Toolkit for distributed user interfaces Three-layer structure : o Application - user interfaces o Ext/Tk - toolkit for migration and adaptation o Mozart - for the distribution layer Application Ext/Tk Mozart

Toolkit for distributed user interfaces Application layer : o UI is dynamically migratable o UI is dynamically adaptable

Toolkit for distributed user interfaces Ext/tk : 1°) Creation of the UI UI={Build window( name:window selector( name:selector items:["Radiobuttons" "Listbox" "Menu"] curselection:1 text:"Selector" action: proc{$} R={UI.selector get(curselection:$)} in {UI.selector setContext((default#listbox#menu).R)} end ))} {UI.window show}

Toolkit for distributed user interfaces Ext/tk : 2°) Migration of the UI {Offer {UI.selector getRef($)}} UI2={Build window(name:window)} {UI2.window show} {UI2.window display({Obtain})}

Toolkit for distributed user interfaces Mozart : Multi-paradigm programming language o Strongly dynamically typed o Procedural, Object-Orientation o Functional, Logic and Symbolic programming o Transparent distribution support  Distributed network protocols are attached automatically to some of the native data types of OZ

Proxy WRenderer W Site A Peer-to-Peer distribution Widget : Proxy + Renderer Proxy W Site A Renderer W Site B Proxy = stationary, functional core Renderer = distributed, user interaction

Demonstration Mozart :

Demonstration Ext/tk

Future work Android support Transparent migration of the top level widget Compatibility with Mozart and newer High-level operations (window migration, widget copy,...)

Bibliography Donatien Grolaux, Transparent Migration and Adaptation in a Graphical User Interface Toolkit, Ph.D. dissertation, Department of Computing Science and Engineering, Université catholique de Louvain, Sep