Tutorial Writing a Custom Tree

What is a Tree?

Trees appear on the left of the window. An example of a tree is the directory view. There is a simple interface which you can implement to create your own trees.

Here’s some terminology:

• Trees are represented by the Tree class. You create an instance of this to show a tree in Redcar.
• A tree mirror is an object that can be queried by Redcar to get the contents of the tree. You will implement one of these to display your tree.
• A tree controller is an object that can respond to tree events, like clicks. You will implement one of these if you want to respond to user input.

Creating a simple Tree of your own

Adding icons

Responding to clicks

Adding drag and drop