A.7.1.13 Tree Handling

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A.7.1.13 Tree Handling

The `<al-tree>` tag now has a `single` attribute which enables the single select mode. In single select mode, selecting a node automatically deselects any previously selected node.

The `<al-input>` tag now supports the `treefold="expr"`, `treeselect="expr"`, and `treeellipsis="expr"` attributes. The expression specifies a tree node that is used to construct a tree iterator input value.

The following methods have been added to the `LazyTreeIterator` class; `load_children()`, `is_selected()`, `select_alias()`, `open_alias()`.