Jack Herrington

Created

23 February 2009

Requirements

Prerequisite knowledge
Knowledge of Flex.
 
User level
Beginning
 
Read the complete chapter
Data is often structured into hierarchies. You have one or more root nodes, with each node having subnodes, and nodes of subnodes, and so on. The directory structure on your hard drive is organized this way. Most categorization systems are organized this way. Even your organizational tree at work is likely structured this way.
 
The Flex 3 framework already has support for hierarchal data display, with the Tree control. This chapter contains a few more controls to make the best use of your hierarchal data.
 
Figure 1. The cascading list showing the list of genres
Figure 1. The cascading list showing the list of genres

This chapter covers the following image components:
 
  • Tree Maps
  • The ILOG Elixir TreeMap control
  • Cascading lists
  • Checkbox trees