javafx.scene.control

Class TreeView.TreeViewFocusModel<T>

java.lang.Object

javafx.scene.control.FocusModel<TreeItem<T>>

javafx.scene.control.TreeView.TreeViewFocusModel<T>

Type Parameters:

T -

Enclosing class:

TreeView<T>

static class TreeView.TreeViewFocusModel<T>
extends FocusModel<TreeItem<T>>

Property Summary

Properties inherited from class javafx.scene.control.FocusModel

focusedIndexProperty, focusedItemProperty

Field Summary

Fields

Modifier and Type	Field and Description
private <any>	rootPropertyListener
private <any>	treeItemListener
private TreeView<T>	treeView
private <any>	weakRootPropertyListener
private <any>	weakTreeItemListener

Constructor Summary

Constructors

Constructor and Description
TreeViewFocusModel(TreeView<T> treeView)

Method Summary

Modifier and Type	Method and Description
void	focus(int index) Causes the item at the given index to receive the focus.
protected int	getItemCount() Returns the number of items in the data model that underpins the control.
protected TreeItem<T>	getModelItem(int index) Returns the item at the given index.
private void	updateTreeEventListener(TreeItem<T> oldRoot, TreeItem<T> newRoot)

Methods inherited from class javafx.scene.control.FocusModel

focusedIndexProperty, focusedItemProperty, focusNext, focusPrevious, getFocusedIndex, getFocusedItem, isFocused, setFocusedIndex, setFocusedItem

Methods inherited from class java.lang.Object

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

Field Detail

treeView

private final TreeView<T> treeView

rootPropertyListener

private final <any> rootPropertyListener

weakRootPropertyListener

private final <any> weakRootPropertyListener

treeItemListener

private <any> treeItemListener

weakTreeItemListener

private <any> weakTreeItemListener

Constructor Detail

TreeViewFocusModel

public TreeViewFocusModel(TreeView<T> treeView)

Method Detail

updateTreeEventListener

private void updateTreeEventListener(TreeItem<T> oldRoot,
                                     TreeItem<T> newRoot)

getItemCount

protected int getItemCount()

Description copied from class: FocusModel

Returns the number of items in the data model that underpins the control. An example would be that a ListView focus model would likely return listView.getItems().size(). The valid range of focusable indices is between 0 and whatever is returned by this method.

Specified by:

getItemCount in class FocusModel<TreeItem<T>>

Returns:

the number of items in the data model that underpins the control

getModelItem

protected TreeItem<T> getModelItem(int index)

Description copied from class: FocusModel

Returns the item at the given index. An example using ListView would be listView.getItems().get(index).

Specified by:

getModelItem in class FocusModel<TreeItem<T>>

Parameters:

index - The index of the item that is requested from the underlying data model.

Returns:

Returns null if the index is out of bounds, or an element of type T that is related to the given index.

focus

public void focus(int index)

Causes the item at the given index to receive the focus. This does not cause the current selection to change. Updates the focusedItem and focusedIndex properties such that focusedIndex = -1 unless 0 <= index < model size.

Overrides:

focus in class FocusModel<TreeItem<T>>

Parameters:

index - The index of the item to get focus.