Leaf2.0

General Information

Tool Name

Leaf2.0

Version

1.0

Group

University of Toronto (Grubb & Chechik)

Web page (if available)

http://www.cs.toronto.edu/~amgrubb/leaf-2.0/Tool.html
https://github.com/amgrubb/Leaf2.0

Main Purpose of the Tool

Leaf2.0 allows users to model SD and SR diagrams using the iStar2.0 Language Guide. The primary purpose of Leaf2.0 is for teaching iStar to new users. Leaf2.0 works as a basic modeling tool for researchers to develop iStar extensions on top of. All tools in the Leaf Family of tools (i.e., Leaf2.0, GrowingLeaf, CreativeLeaf, BloomingLeaf) have the same look and feel.
Leaf2.0 has highlighting for leaf nodes and root nodes, but other analysis techniques have not been implemented.

i* framework supported

iStar 2.0

Availability of the tool

• ( ) For i* modelling only
• ( ) For development only
• (X) Both

If not available, please specify expected date of availability: Already available

Programming Language

JavaScript

Platform Requirements

Chrome (works in other browsers but less tested)

Other technology needed

none

Current state of the tool

Woking versions are available to try, tool will be updated.

Ongoing work

• Implement Forward Analysis
• Bug Fixes

i* Modelling Suitability

1. Does the tool allow SD modelling?

Yes

2. Does the tool allow SR modelling?

Yes

3. Does the tool allow working with SD & SR models jointly?

Yes
If so, please specify how (i.e., by means of expandable elements).
There are two different actor icons.

4. Does the tool allow the construction of the models graphically?

Yes
If so, please specify how (i.e., dragging and dropping the elements into a drawing page)
Drag and drop interface.

5. Does the tool allow the construction of the models textually?

No

6. Describe how the elements are modelled and their flexibility (i.e., the elements can be moved and reordered).

Moved, name change, resized

7. Describe how the dependency links are modelled and their flexibility (i.e., dependencies are modelled with straight lines that can not be redirected).

Dependency links can be drawn from the palette. The link is modelled with straight line that can be curved and redirected. Curved links can also be straightened.

8. Does the tool allow automatic organization of the elements?

No

9. Other modelling facilities provided by the tool:

• Highlighting Root and Leaf Nodes

10. Does the tool check SD models?

No
If so, please specify how (i.e., the tool checks if all the SD dependencies are assigned).

11. Does the tool check SR models?

No
If so, please specify how (i.e., checks if the SR links are correctly stated).

12. Other checks provided by the tool (i.e., cross validation between SD and SR models).

13. Does the tool allow working with two or more models at the same time?

No

14. Does the tool allow to group models in projects?

No

15. Does the tool allow working with two or more projects at the same time?

No

16. What are the other functionalities that the tool provides?

N/A

Usability

17. Rate the understandability of the user interface

• () Internal use
• () Ready for public use
• (X) Has been used publicly with little learning curve

If it is not ready for public use, mark one or more of the following:

• ( ) not in English
• ( ) writing not polished
• ( ) poor usability (colours, ...)
• ( ) others: please specify

Expected date for public use (if any): currently available

18. Rate the quality of the user manual

• ( ) Inexistent
• ( ) Internal use
• ( ) Ready for public use
• (X) Has been used publicly, but still under improvement

If user manual for internal use, mark one or more of the following:

• ( ) incomplete
• ( ) obsolete
• ( ) not in English
• ( ) writing not polished
• ( ) others: please specify

Expected date for public use (if any):

19. Does the tool provides i* learning facilities?

No, but contributions are welcome and encouraged.
If so, explain which ones (i.e., methodological guidance).

20. Does the tool provide any examples for the users?

No, but contributions are welcome.

21. Rate the difficulty of installing the tool

Browser-based, no installation.

Maturity of the Tool

22. Rate the maturity of the tool from the user point of view:

• ( ) Under Development
• ( ) Prototype
• ( ) Ready for public use
• (X) Has been used publicly

If not for public use, mark one or more of the following:

• ( ) incomplete
• ( ) occasional testing
• ( ) non-exhaustive testing
• ( ) non-persistent data
• ( ) poor efficiency
• ( ) not portable
• ( ) others: please specify

Expected date for public use (if any):

23. Has the tool been used for any case study?

Many examples, no large case study yet

24. Has the tool been tested in large models?

Somewhat large

25. Has the tool any drawback when working with very large models?

Only the regular drawbacks with large i* models

26. Which is approximately the maximum size of the model (in terms of actors and dependencies) the tool has been used for?

100 nodes.

Extensibility and Interoperability

27. Does the tool allow importing files?

Yes
json files only

28. Does the tool allow exporting files?

Yes
json, svg

29. Does the tool allow importing/exporting the data through an XML format?

JSON

30. Is the architecture of the tool published?

No
If so, where?

31. Does the tool allow the addition of other elements outside the i* framework of the tool?

Could be added to the code.

32. New functionalities can be added to the tool by means of:

acquiring a Rappid license and expanding javascript.

33. Rate the maturity of the tool from for open development:

• ( ) Under Development
• ( ) Prototype
• ( ) Ready for public development use
• (X) Has been used for public development

If not for public development use, mark one or more of the following:

• ( ) incomplete code
• ( ) no help provided
• ( ) non-persistent data
• ( ) non-exhaustive testing
• ( ) poor efficiency
• ( ) not portable
• ( ) no development installation facilities provided
• ( ) others: please specify

Expected date for public development use (if any):

34. Is there any internal documentation for programmers?

Rappid/JointJS Documentation, Leaf2.0 Architecture and programming guide.