User Guide

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50
CHAPTER 50
Tree component (Flash
Professional only)
The Tree component allows a user to view hierarchical data. The tree appears in a box like the
List component, but each item in a tree is called a node and can be either a leaf or a branch. By
default, a leaf is represented by a text label beside a file icon, and a branch is represented by a
text label beside a folder icon with an expander arrow (disclosure triangle) that a user can open
to display child nodes. The children of a branch can be leaves or branches.
The data of a tree component must be provided from an XML data source. For more
information, see “Using the Tree component (Flash Professional only)” on page 1266.
When a Tree instance has focus either from clicking or tabbing, you can use the following
keys to control it:
The Tree component cannot be made accessible to screen readers.
Key Description
Down Arrow Moves selection down one item.
Up Arrow Moves selection up one item.
Right Arrow Opens a selected branch node. If a branch is already open, moves to first child
node.
Left Arrow Closes a selected branch node. If on a leaf node of a closed branch node,
moves to parent node.
Space Opens or closes a selected branch node.
End Moves selection to the bottom of the list.
Home Moves selection to the top of the list.
Page Down Moves selection down one page.
Page Up Moves selection up one page.
Control Allows multiple noncontiguous selections.
Shift Allows multiple contiguous selections.