ListViewSkin

java.lang.Object
- javafx.scene.control.SkinBase<C>
- - javafx.scene.control.skin.VirtualContainerBase<ListView<T>,ListCell<T>>
  - - javafx.scene.control.skin.ListViewSkin<T>

All Implemented Interfaces:

Skin<ListView<T>>
```
public class ListViewSkin<T>
extends VirtualContainerBase<ListView<T>,ListCell<T>>
```
Default skin implementation for the ListView control.

Since:

9

See Also:

ListView

Constructor Summary

Constructors
Constructor	Description
`ListViewSkin(ListView<T> control)`	Creates a new ListViewSkin instance, installing the necessary child nodes into the Control `children` list, as well as the necessary input mappings for handling key, mouse, etc events.

Method Summary

All MethodsInstance MethodsConcrete Methods
Modifier and Type	Method	Description
`protected double`	`computePrefHeight(double width, double topInset, double rightInset, double bottomInset, double leftInset)`	Calculates the preferred height of this `SkinBase`.
`protected double`	`computePrefWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset)`	Calculates the preferred width of this `SkinBase`.
`void`	`dispose()`	Called by a Skinnable when the Skin is replaced on the Skinnable.
`protected void`	`executeAccessibleAction(AccessibleAction action, Object... parameters)`	This method is called by the assistive technology to request the action indicated by the argument should be executed.
`protected int`	`getItemCount()`	Returns the total number of items in this container, including those that are currently hidden because they are out of view.
`protected void`	`layoutChildren(double x, double y, double w, double h)`	Called during the layout pass of the scenegraph.
`protected Object`	`queryAccessibleAttribute(AccessibleAttribute attribute, Object... parameters)`	This method is called by the assistive technology to request the value for an attribute.
`protected void`	`updateItemCount()`	This method is called when it is possible that the item count has changed (i.e.

Methods inherited from class javafx.scene.control.skin.VirtualContainerBase
createVirtualFlow, getVirtualFlow, markItemCountDirty

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

Constructor Detail
- ListViewSkin
```
public ListViewSkin(ListView<T> control)
```
  Creates a new ListViewSkin instance, installing the necessary child nodes into the Control children list, as well as the necessary input mappings for handling key, mouse, etc events.
  
  Parameters:
  
  control - The control that this skin should be installed onto.

Method Detail
- dispose
```
public void dispose()
```
  Called by a Skinnable when the Skin is replaced on the Skinnable. This method allows a Skin to implement any logic necessary to clean up itself after the Skin is no longer needed. It may be used to release native resources. The methods Skin.getSkinnable() and Skin.getNode() should return null following a call to dispose. Calling dispose twice has no effect.
  
  Specified by:
  
  dispose in interface Skin<T>
  
  Overrides:
  
  dispose in class SkinBase<ListView<T>>
- layoutChildren
```
protected void layoutChildren(double x,
                              double y,
                              double w,
                              double h)
```
  Called during the layout pass of the scenegraph.
  
  Overrides:
  
  layoutChildren in class VirtualContainerBase<ListView<T>,ListCell<T>>
  
  Parameters:
  
  x - the x position
  
  y - the y position
  
  w - the width
  
  h - the height
- computePrefWidth
```
protected double computePrefWidth(double height,
                                  double topInset,
                                  double rightInset,
                                  double bottomInset,
                                  double leftInset)
```
  Calculates the preferred width of this SkinBase. The default implementation calculates this width as the width of the area occupied by its managed children when they are positioned at their current positions at their preferred widths.
  
  Overrides:
  
  computePrefWidth in class SkinBase<ListView<T>>
  
  Parameters:
  
  height - the height that should be used if preferred width depends on it
  
  topInset - the pixel snapped top inset
  
  rightInset - the pixel snapped right inset
  
  bottomInset - the pixel snapped bottom inset
  
  leftInset - the pixel snapped left inset
  
  Returns:
  
  the calculated preferred width
- computePrefHeight
```
protected double computePrefHeight(double width,
                                   double topInset,
                                   double rightInset,
                                   double bottomInset,
                                   double leftInset)
```
  Calculates the preferred height of this SkinBase. The default implementation calculates this height as the height of the area occupied by its managed children when they are positioned at their current positions at their preferred heights.
  
  Overrides:
  
  computePrefHeight in class SkinBase<ListView<T>>
  
  Parameters:
  
  width - the width that should be used if preferred height depends on it
  
  topInset - the pixel snapped top inset
  
  rightInset - the pixel snapped right inset
  
  bottomInset - the pixel snapped bottom inset
  
  leftInset - the pixel snapped left inset
  
  Returns:
  
  the calculated preferred height
- getItemCount
```
protected int getItemCount()
```
  Returns the total number of items in this container, including those that are currently hidden because they are out of view.
  
  Specified by:
  
  getItemCount in class VirtualContainerBase<ListView<T>,ListCell<T>>
  
  Returns:
  
  the total number of items in this container
- updateItemCount
```
protected void updateItemCount()
```
  This method is called when it is possible that the item count has changed (i.e. scrolling has occurred, the control has resized, etc). This method should recalculate the item count and store that for future use by the VirtualContainerBase.getItemCount() method.
  
  Specified by:
  
  updateItemCount in class VirtualContainerBase<ListView<T>,ListCell<T>>
- queryAccessibleAttribute
```
protected Object queryAccessibleAttribute(AccessibleAttribute attribute,
                                          Object... parameters)
```
  This method is called by the assistive technology to request the value for an attribute.
  This method is commonly overridden by subclasses to implement attributes that are required for a specific role.
  If a particular attribute is not handled, the superclass implementation must be called.
  
  Overrides:
  
  queryAccessibleAttribute in class SkinBase<ListView<T>>
  
  Parameters:
  
  attribute - the requested attribute
  
  parameters - optional list of parameters
  
  Returns:
  
  the value for the requested attribute
  
  See Also:
  
  AccessibleAttribute, Node.queryAccessibleAttribute(javafx.scene.AccessibleAttribute, java.lang.Object...)
- executeAccessibleAction
```
protected void executeAccessibleAction(AccessibleAction action,
                                       Object... parameters)
```
  This method is called by the assistive technology to request the action indicated by the argument should be executed.
  This method is commonly overridden by subclasses to implement action that are required for a specific role.
  If a particular action is not handled, the superclass implementation must be called.
  
  Overrides:
  
  executeAccessibleAction in class SkinBase<ListView<T>>
  
  Parameters:
  
  action - the action to execute
  
  parameters - optional list of parameters
  
  See Also:
  
  AccessibleAction, Node.executeAccessibleAction(javafx.scene.AccessibleAction, java.lang.Object...)

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Documentation extracted from JavaFX API Documentation.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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Class ListViewSkin<T>

Constructor Summary

Method Summary

Methods inherited from class javafx.scene.control.skin.VirtualContainerBase

Methods inherited from class javafx.scene.control.SkinBase

Methods inherited from class java.lang.Object

Constructor Detail

Method Detail

dispose

layoutChildren

computePrefWidth

computePrefHeight

getItemCount

updateItemCount

queryAccessibleAttribute

executeAccessibleAction