Expression Tree Architecture

1
Expression Tree Architecture

• Chris Becker
• Jason Cavett
• Karen Roth
• Rachel Strong

2
The Problem Expression Tree

• Tree editor for mathematical expressions
• Support four basic operations leaf nodes
• Nodes automatically update whenever a sub-node
  has been changed
• Support the deletion of sub-trees

3
Class Diagram
4
JHotDraw Architecture
5
JHotDraw Architecture Evaluation

• Helped
• Plethora of Figures implemented
• Grouping figures
• Tools
• Editing Text
• Connections
• Hurt
• Observer/Observable conflicts
• ConnectionGroupFigure not possible
• View not initially set.
• Pretty vast for given problem