This tag is used to display tree structured data. A pre-order traversal (node visited before each child) of the tree is performed and the enclosed content is evaluated for each node in the tree.
The treefold, treeselect, and treeellipsis attributes on the <al-input> (5.2.2) tag allow the user to open, close, and select lazy tree nodes.
Section 3.12 contains an example of a simple usage of the <al-tree> tag.
The samples/tree/tree1 sample program takes the simple
example further and implements an application that places a checkbox
next to the name of each node name. A unique input field name is
generated for each checkbox by using the alias attribute
described in section 5.2.2 on page
The samples/tree/tree2 sample program demonstrates the use of the lazy <al-tree> attribute that enables lazy child loading mode.
The samples/tree/tree3 sample program demonstrates the use of the ellipsis <al-tree> attribute.