AbstractTreeModel

java.lang.Object
- org.omnifaces.model.tree.AbstractTreeModel<T>

Type Parameters:
T - The type of the wrapped data of the tree node.

All Implemented Interfaces:

Serializable, Iterable<TreeModel<T>>, TreeModel<T>

Direct Known Subclasses:

ListTreeModel, SortedTreeModel
```
public abstract class AbstractTreeModel<T>
extends Object
implements TreeModel<T>
```
A base implementation of TreeModel. Implementors basically only need to implement createChildren() wherein a concrete instance of the desired underlying Collection is returned.

Since:

1.7

Author:

Bauke Scholtz

See Also:
ListTreeModel, SortedTreeModel, Serialized Form

Constructor Summary

Constructors
Constructor and Description

AbstractTreeModel()

Constructors
Constructor and Description
`AbstractTreeModel()`

Method Summary

Methods
Modifier and Type	Method and Description
`TreeModel<T>`	`addChild(T data)` Creates and adds a child tree node with the given wrapped data to the current tree node.
`TreeModel<T>`	`addChildNode(TreeModel<T> child)` Adds the given child tree node to the current tree node.
`protected abstract Collection<TreeModel<T>>`	`createChildren()` Returns a concrete (and usually empty) `Collection` instance which should hold the tree's children.
`boolean`	`equals(Object object)`
`int`	`getChildCount()` Returns the count of the children of the current tree node.
`List<TreeModel<T>>`	`getChildren()` Returns an unmodifiable list of all child tree nodes of the current tree node.
`T`	`getData()` Returns the wrapped data of the current tree node.
`String`	`getIndex()` Returns the zero-based unique index of the current tree node.
`int`	`getLevel()` Returns the level of the current tree node.
`TreeModel<T>`	`getNextSibling()` Returns the next tree node sibling of the current tree node.
`TreeModel<T>`	`getParent()` Returns the parent tree node of the current tree node.
`TreeModel<T>`	`getPreviousSibling()` Returns the previous tree node sibling of the current tree node.
`int`	`hashCode()`
`boolean`	`isFirst()` Returns whether the current tree node is the first child of its parent, if any.
`boolean`	`isLast()` Returns whether the current tree node is the last child of its parent, if any.
`boolean`	`isLeaf()` Returns whether the current tree node is a leaf node.
`boolean`	`isRoot()` Returns whether the current tree node is the root node.
`Iterator<TreeModel<T>>`	`iterator()` Returns an unmodifiable iterator over the children of the current tree node.
`TreeModel<T>`	`remove()` Removes the current tree node from its parent, if any.
`void`	`setData(T data)` Sets the wrapped data of the current tree node.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - AbstractTreeModel
```
public AbstractTreeModel()
```
- Method Detail
  - createChildren
```
protected abstract Collection<TreeModel<T>> createChildren()
```
    Returns a concrete (and usually empty) Collection instance which should hold the tree's children.
    
    Returns:
    A concrete (and usually empty) Collection instance which should hold the tree's children.
  - setData
```
public void setData(T data)
```
    Description copied from interface: TreeModel
    
    Sets the wrapped data of the current tree node.
    
    Specified by:
    
    setData in interface TreeModel<T>
    
    Parameters:
    data - The wrapped data of current tree node.
  - addChild
```
public TreeModel<T> addChild(T data)
```
    Description copied from interface: TreeModel
    
    Creates and adds a child tree node with the given wrapped data to the current tree node. It returns the newly created and added child tree node to ease further building.
    
    Specified by:
    
    addChild in interface TreeModel<T>
    
    Parameters:
    data - The wrapped data of the child tree node to be created and added.
    
    Returns:
    The newly created and added child tree node of the current tree node.
  - addChildNode
```
public TreeModel<T> addChildNode(TreeModel<T> child)
```
    Description copied from interface: TreeModel
    
    Adds the given child tree node to the current tree node. It returns the added child tree node to ease further building.
    
    Specified by:
    
    addChildNode in interface TreeModel<T>
    
    Parameters:
    child - The child tree node to be added.
    
    Returns:
    The same child treenode.
  - remove
```
public TreeModel<T> remove()
```
    Description copied from interface: TreeModel
    
    Removes the current tree node from its parent, if any. It returns the parent to ease further building.
    
    Specified by:
    
    remove in interface TreeModel<T>
    
    Returns:
    The parent tree node of the current tree node.
  - getData
```
public T getData()
```
    Description copied from interface: TreeModel
    
    Returns the wrapped data of the current tree node.
    
    Specified by:
    
    getData in interface TreeModel<T>
    
    Returns:
    The wrapped data of the current tree node.
  - getParent
```
public TreeModel<T> getParent()
```
    Description copied from interface: TreeModel
    
    Returns the parent tree node of the current tree node. Returns null if there is none.
    
    Specified by:
    
    getParent in interface TreeModel<T>
    
    Returns:
    The parent tree node of the current tree node.
  - getNextSibling
```
public TreeModel<T> getNextSibling()
```
    Description copied from interface: TreeModel
    
    Returns the next tree node sibling of the current tree node. Returns null if there is none.
    
    Specified by:
    
    getNextSibling in interface TreeModel<T>
    
    Returns:
    The next tree node sibling of the current tree node.
  - getPreviousSibling
```
public TreeModel<T> getPreviousSibling()
```
    Description copied from interface: TreeModel
    
    Returns the previous tree node sibling of the current tree node. Returns null if there is none.
    
    Specified by:
    
    getPreviousSibling in interface TreeModel<T>
    
    Returns:
    The previous tree node sibling of the current tree node.
  - getChildCount
```
public int getChildCount()
```
    Description copied from interface: TreeModel
    
    Returns the count of the children of the current tree node.
    
    Specified by:
    
    getChildCount in interface TreeModel<T>
    
    Returns:
    The count of the children of the current tree node.
  - getChildren
```
public List<TreeModel<T>> getChildren()
```
    Description copied from interface: TreeModel
    
    Returns an unmodifiable list of all child tree nodes of the current tree node. Adding and removing elements is not supported on the list. Adding new children should be done by the TreeModel.addChild(Object) method on the tree node parent. Removing children should be done by the TreeModel.remove() method on the tree node itself.
    
    Specified by:
    
    getChildren in interface TreeModel<T>
    
    Returns:
    An unmodifiable list of all child tree nodes of the current tree node.
  - iterator
```
public Iterator<TreeModel<T>> iterator()
```
    Description copied from interface: TreeModel
    
    Returns an unmodifiable iterator over the children of the current tree node. Adding/inserting/removing elements is not supported on the iterator.
    
    Specified by:
    
    iterator in interface Iterable<TreeModel<T>>
    
    Specified by:
    
    iterator in interface TreeModel<T>
    
    Returns:
    An unmodifiable iterator over the children of the current tree node.
    See Also:
    Iterable
  - getLevel
```
public int getLevel()
```
    Description copied from interface: TreeModel
    
    Returns the level of the current tree node. The root node has level 0.
    
    Specified by:
    
    getLevel in interface TreeModel<T>
    
    Returns:
    The level of the current tree node.
  - getIndex
```
public String getIndex()
```
    Description copied from interface: TreeModel
    
    Returns the zero-based unique index of the current tree node. This is an underscore separated representation of the position of the node in the tree hierarchy. The root node has index of null. The first child has index 0. The second child of first child has index 0_1. The first child of second child of third child has index 2_1_0.
    
    Specified by:
    
    getIndex in interface TreeModel<T>
    
    Returns:
    The unique index of the current tree node.
  - isRoot
```
public boolean isRoot()
```
    Description copied from interface: TreeModel
    
    Returns whether the current tree node is the root node. That is, when it has no parent.
    
    Specified by:
    
    isRoot in interface TreeModel<T>
    
    Returns:
    true if the current tree node is the root node, otherwise false.
  - isLeaf
```
public boolean isLeaf()
```
    Description copied from interface: TreeModel
    
    Returns whether the current tree node is a leaf node. That is, when it has no children.
    
    Specified by:
    
    isLeaf in interface TreeModel<T>
    
    Returns:
    true if the current tree node is a leaf node, otherwise false.
  - isFirst
```
public boolean isFirst()
```
    Description copied from interface: TreeModel
    
    Returns whether the current tree node is the first child of its parent, if any.
    
    Specified by:
    
    isFirst in interface TreeModel<T>
    
    Returns:
    true if the current tree node is the first child of its parent, otherwise false.
  - isLast
```
public boolean isLast()
```
    Description copied from interface: TreeModel
    
    Returns whether the current tree node is the last child of its parent, if any.
    
    Specified by:
    
    isLast in interface TreeModel<T>
    
    Returns:
    true if the current tree node is the last child of its parent, otherwise false.
  - equals
```
public boolean equals(Object object)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class AbstractTreeModel<T>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

AbstractTreeModel

Method Detail

createChildren

setData

addChild

addChildNode

remove

getData

getParent

getNextSibling

getPreviousSibling

getChildCount

getChildren

iterator

getLevel

getIndex

isRoot

isLeaf

isFirst

isLast

equals

hashCode

toString