O'Reilly logo

ExtGWT Rich Internet Application Cookbook by Odili Charles Opute

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 6. Data Hierarchy with Trees

In this chapter we will cover:

  • Building a basic tree
  • Custom node labels
  • Decorating trees with icons
  • Augmenting trees with ContextMenu
  • Building trees with checkbox selection
  • Building asynchronous trees
  • Custom sorting within trees

Introduction

A hierarchical data model is a data model in which the data is organized into a tree-like structure. The structure allows the representation of information using parent/child relationships; each parent can have many children but each child only has one parent. A tree structure is a way of representing the hierarchical nature of a structure in a graphical form. It is named a tree structure, because the classic representation resembles that of a tree, even though the chart is generally ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required