LayoutModel

Provides access to the tree and list model representation object of the layout of a page.

Many of the following attributes return LayoutNode. However, LayoutContainer and LayoutControl are types of LayoutNode, and when you iterate, you can encounter either type.

Attributes:

children

Returns the children of the specified node.

Example:
```
${wp.layoutModel[wp.selectionModel.selected].children[node]}
```
Parameters:
- node
  
  This value represents an entry in a model.
Returns: Children of the specified node.
get(id)

Gets an individual layout model.

Example:
```
${wp.layoutModel[id]}
```
Parameters:
- id
  
  String or Identifiable object to look up the layout objects. It must not be null.
Returns: LayoutNode; it can be null if not found.
hasChildren

Determines whether the current specified LayoutNode has associated nodes.

Example:
```
${wp.layoutModel[wp.selectionModel.selected].hasChildren[node]}
```
Parameters:
- node
  
  LayoutNode; node to check for child nodes.
Returns: Boolean; true if the layout node has children. Otherwise, it is false.
iterator

Iterates through layout nodes.

Example:
```
<c:forEach var="node" items="${wp.layoutModel[wp.selectionModel.selected]}">
</c:forEach>
```
Parameters: None

Returns: an iterator with LayoutNode objects; it is never null.
parent

Access to the parent of a node.

Example:
```
${wp.layoutModel[wp.selectionModel.selected].parent[node]}
```
Parameters:
- node
  
  LayoutNode; the current node.
Returns: LayoutNode; the parent node for the node if there is a parent. Otherwise, it is null.
path

Provides access to the path information for the node. The path represents the hierarchy from the root to the give node as a list. It is like a breadcrumb.

Example:
```
${wp.layoutModel[wp.selectionModel.selected].path[node]}
```
Parameters:
- node
  
  LayoutNode; the current node.
Returns: a list of LayoutNodes representing the path from the root to a node.
root

Returns the root node of the layout model.

Example:
```
${wp.layoutModel[wp.selectionModel.selected].root}
```
Parameters: none

Returns: LayoutNode; it is never null.