org.apache.pivot.wtk.content

Class TreeBranch

java.lang.Object

org.apache.pivot.wtk.content.TreeNode

org.apache.pivot.wtk.content.TreeBranch

All Implemented Interfaces:

Iterable<TreeNode>, Collection<TreeNode>, List<TreeNode>, Sequence<TreeNode>

public class TreeBranch
extends TreeNode
implements List<TreeNode>

Default tree branch implementation.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.pivot.collections.List

List.ItemIterator<T>, List.ListListenerList<T>

Nested classes/interfaces inherited from interface org.apache.pivot.collections.Sequence

Sequence.Tree<T>

Constructor Summary

Constructors

Constructor and Description
TreeBranch()
TreeBranch(Image icon)
TreeBranch(Image icon, Image expandedIcon, String text)
TreeBranch(Image icon, String text)
TreeBranch(String text)

Method Summary

Methods

Modifier and Type	Method and Description
int	add(TreeNode treeNode) Adds an item to the list.
void	clear() Removes all elements from the collection.
TreeNode	get(int index) Retrieves the item at the given index.
Comparator<TreeNode>	getComparator() Returns the collection's sort order.
Image	getExpandedIcon()
int	getLength() Returns the length of the list.
ListenerList<ListListener<TreeNode>>	getListListeners() Returns the list listener list.
int	indexOf(TreeNode treeNode) Returns the index of an item in the sequence.
void	insert(TreeNode treeNode, int index) Inserts an item into the list.
boolean	isEmpty() Tests the emptiness of the collection.
Iterator<TreeNode>	iterator()
Sequence<TreeNode>	remove(int index, int count) Removes one or more items from the sequence.
int	remove(TreeNode treeNode) Removes the first occurrence of the given item from the sequence.
void	setComparator(Comparator<TreeNode> comparator) Sets the collection's sort order, re-ordering the collection's contents and ensuring that new entries preserve the sort order.
void	setExpandedIcon(Image expandedIcon)
void	setExpandedIcon(String expandedIconName) Sets the tree branch's expanded icon by resource name.
void	setExpandedIcon(URL iconURL) Sets the tree branch's expanded icon by URL.
String	toString()
TreeNode	update(int index, TreeNode treeNode) Updates the item at the given index.

Methods inherited from class org.apache.pivot.wtk.content.TreeNode

getIcon, getParent, getText, getUserData, setIcon, setIcon, setIcon, setParent, setText, setUserData

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

TreeBranch

public TreeBranch()

TreeBranch

public TreeBranch(Image icon)

TreeBranch

public TreeBranch(String text)

TreeBranch

public TreeBranch(Image icon,
          String text)

TreeBranch

public TreeBranch(Image icon,
          Image expandedIcon,
          String text)

Method Detail

getExpandedIcon

public Image getExpandedIcon()

setExpandedIcon

public void setExpandedIcon(Image expandedIcon)

setExpandedIcon

public void setExpandedIcon(URL iconURL)

Sets the tree branch's expanded icon by URL.

If the icon already exists in the application context resource cache, the cached value will be used. Otherwise, the icon will be loaded synchronously and added to the cache.

Parameters:

iconURL - The location of the expanded icon to set.

setExpandedIcon

public void setExpandedIcon(String expandedIconName)

Sets the tree branch's expanded icon by resource name.

Parameters:

expandedIconName - The resource name of the expanded icon to set.

See Also:

setExpandedIcon(URL)

add

public int add(TreeNode treeNode)

Description copied from interface: List

Adds an item to the list. If the list is unsorted, the item is appended to the end of the list. Otherwise, it is inserted at the appropriate index.

Specified by:

add in interface List<TreeNode>

Specified by:

add in interface Sequence<TreeNode>

Parameters:

treeNode - The item to be added to the sequence.

Returns:

The index at which the item was added.

See Also:

ListListener.itemInserted(List, int)

insert

public void insert(TreeNode treeNode,
          int index)

Description copied from interface: List

Inserts an item into the list.

Specified by:

insert in interface List<TreeNode>

Specified by:

insert in interface Sequence<TreeNode>

Parameters:

treeNode - The item to be added to the list.

index - The index at which the item should be inserted. Must be a value between 0 and getLength().

See Also:

ListListener.itemInserted(List, int)

update

public TreeNode update(int index,
              TreeNode treeNode)

Description copied from interface: List

Updates the item at the given index.

Specified by:

update in interface List<TreeNode>

Specified by:

update in interface Sequence<TreeNode>

Parameters:

index - The index of the item to update.

treeNode - The item that will replace any existing value at the given index.

Returns:

The item that was previously stored at the given index.

See Also:

ListListener.itemUpdated(List, int, Object)

remove

public int remove(TreeNode treeNode)

Description copied from interface: Sequence

Removes the first occurrence of the given item from the sequence.

Specified by:

remove in interface Sequence<TreeNode>

Parameters:

treeNode - The item to remove.

Returns:

The index of the item that was removed, or -1 if the item could not be found.

See Also:

Sequence.remove(int, int)

remove

public Sequence<TreeNode> remove(int index,
                        int count)

Description copied from interface: Sequence

Removes one or more items from the sequence.

Specified by:

remove in interface List<TreeNode>

Specified by:

remove in interface Sequence<TreeNode>

Parameters:

index - The starting index to remove.

count - The number of items to remove, beginning with index.

Returns:

A sequence containing the items that were removed.

See Also:

ListListener.itemsRemoved(List, int, Sequence)

clear

public void clear()

Description copied from interface: Collection

Removes all elements from the collection.

Specified by:

clear in interface Collection<TreeNode>

Specified by:

clear in interface List<TreeNode>

See Also:

ListListener.itemsRemoved(List, int, Sequence)

get

public TreeNode get(int index)

Description copied from interface: Sequence

Retrieves the item at the given index.

Specified by:

get in interface Sequence<TreeNode>

Parameters:

index - The index of the item to retrieve.

indexOf

public int indexOf(TreeNode treeNode)

Description copied from interface: Sequence

Returns the index of an item in the sequence.

Specified by:

indexOf in interface Sequence<TreeNode>

Parameters:

treeNode - The item to locate.

Returns:

The index of first occurrence of the item if it exists in the sequence; -1, otherwise.

isEmpty

public boolean isEmpty()

Description copied from interface: Collection

Tests the emptiness of the collection.

Specified by:

isEmpty in interface Collection<TreeNode>

Returns:

true if the collection contains no elements; false, otherwise.

getLength

public int getLength()

Description copied from interface: List

Returns the length of the list.

Specified by:

getLength in interface List<TreeNode>

Specified by:

getLength in interface Sequence<TreeNode>

Returns:

The number of items in the list, or -1 if the list's length is not known. In this case, the iterator must be used to retrieve the contents of the list.

getComparator

public Comparator<TreeNode> getComparator()

Description copied from interface: Collection

Returns the collection's sort order.

Specified by:

getComparator in interface Collection<TreeNode>

Returns:

The comparator used to order elements in the collection, or null if the sort order is undefined.

See Also:

Collection.setComparator(Comparator)

setComparator

public void setComparator(Comparator<TreeNode> comparator)

Description copied from interface: Collection

Sets the collection's sort order, re-ordering the collection's contents and ensuring that new entries preserve the sort order.

Calling this method more than once with the same comparator will re-sort the collection.

Specified by:

setComparator in interface Collection<TreeNode>

Specified by:

setComparator in interface List<TreeNode>

Parameters:

comparator - The comparator used to order elements in the collection, or null if the collection is unsorted.

See Also:

ListListener.comparatorChanged(List, Comparator)

iterator

public Iterator<TreeNode> iterator()

Specified by:

iterator in interface Iterable<TreeNode>

getListListeners

public ListenerList<ListListener<TreeNode>> getListListeners()

Description copied from interface: List

Returns the list listener list.

Specified by:

getListListeners in interface List<TreeNode>

toString

public String toString()

Overrides:

toString in class TreeNode