ActionScript 2.0 Components Language Reference 
ActionScript 2.0 Components Language Reference |
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| Tree component | |||
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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.
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NOTE |
The Tree component is supported only if you are working in a document that specifies ActionScript 2.0 in its Publish Settings. |
The data of a tree component must be provided from an XML data source. For more information, see Using the Tree component.
When a Tree instance has focus either from clicking or tabbing, you can use the following keys to control it:
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Key |
Description |
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Down Arrow |
Moves selection down one item. |
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Up Arrow |
Moves selection up one item. |
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Right Arrow |
Opens a selected branch node. If a branch is already open, moves to first child node. |
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Left Arrow |
Closes a selected branch node. If on a leaf node of a closed branch node, moves to parent node. |
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Space |
Opens or closes a selected branch node. |
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End |
Moves selection to the bottom of the list. |
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Home |
Moves selection to the top of the list. |
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Page Down |
Moves selection down one page. |
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Page Up |
Moves selection up one page. |
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Control |
Allows multiple noncontiguous selections. |
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Shift |
Allows multiple contiguous selections. |
The Tree component cannot be made accessible to screen readers.
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