The document discusses the development of dynamic graphical user interfaces for web-based public display applications, emphasizing the need for open public display networks that allow diverse applications and interaction methods. It introduces 'purewidgets,' a model providing high-level abstractions for developers to create applications with minimal effort while ensuring various interaction capabilities, such as SMS and touch. The conclusion stresses the necessity for better tools to enhance application creation for these networks.

1. Dynamic graphical user interface
generation for web-based public
display applications
Jorge C. S. Cardoso
jorgecardoso@ieee.org
http://jorgecardoso.eu
PECCS 2014 - Lisbon, Portugal

2. Open public display networks
● Open display networks
○ "designed and implemented to be open to
applications and content from many sources and
thus provide the foundation for work on a new global
communications medium for information access and
interaction”

3. Interaction toolkit for public displays
● Different displays may provide different
interaction capabilities
● Developers need
○ Abstraction from interaction mechanisms
○ Various high-level controls

4. PuReWidgets
● High-level abstractions
○ Widgets
● Independence from interaction mechanism
○
○
○
○
○
SMS
Email
Touch
Mobile interface
QR code

5. Widgets

6. Interaction
Touch
Text-based
(SMS, email, …)
QR codes
Mobile
interface
(Automatically
generated)

7. Automatic GUI for mobile devices
● Discoverability
○ Of apps
○ Of apps’ features
● Interaction
● No extra effort for programmers of public
display apps

8. Dynamic GUI generation approaches
● Downloadable UI code
○ e.g., Jini Service UI
● Abstract UI description
○ XWeb (Olsen et al., 2000)
● Hybrid
○ Hodes & Katz, 1999
○ iCrafter (Ponnekanti et al., 2001)
Author unknown. Taken from http://www.flixya.com/photo/2162704/BasikalBicycle

9. Dynamic GUI generation approaches
Author unknown. Taken from http://www.flixya.com/photo/2162704/BasikalBicycle

10. Dynamic GUI generation approaches
Author unknown. Taken from http://www.flixya.com/photo/2162704/BasikalBicycle

11. Dynamic GUI generation approaches
Author unknown. Taken from http://www.flixya.com/photo/2162704/BasikalBicycle

12. Dynamic GUI generation approaches
Author unknown. Taken from http://www.flixya.com/photo/2162704/BasikalBicycle

13. PuReWidgets
Author unknown. Taken from http://www.flixya.com/photo/2162704/BasikalBicycle

14. Architecture

15. Widget structure
Interaction
Manager
Server
Author unknown. Taken from http://www.flixya.com/photo/2162704/BasikalBicycle

16. Rendering
Author unknown. Taken from http://www.flixya.com/photo/2162704/BasikalBicycle

17. Rendering
Author unknown. Taken from http://www.flixya.com/photo/2162704/BasikalBicycle

18. Preliminary evaluation
● Real-world deployment

19. Discussion
● Asynchronous
interaction
● Rapidly changing
widgets

20. Conclusion
● We need better tools to create applications
for open display networks
○ Interaction abstractions
● PuReWidgets is just one attempt/model

21. Thank you!
Dynamic graphical user interface
generation for web-based public
display applications
Jorge C. S. Cardoso
jorgecardoso@ieee.org
http://jorgecardoso.eu
PECCS 2014 - Lisbon, Portugal