Class VFXObservingTableCell.VFXObservingTableCellSkin

java.lang.Object

javafx.scene.control.SkinBase<VFXCellBase<T>>

io.github.palexdev.mfxcore.controls.SkinBase<VFXCellBase<T>, CellBaseBehavior<T>>

io.github.palexdev.virtualizedfx.cells.VFXLabeledCellSkin<T>

io.github.palexdev.virtualizedfx.cells.VFXObservingTableCell.VFXObservingTableCellSkin

All Implemented Interfaces:

Skin<VFXCellBase<T>>

Enclosing class:

VFXObservingTableCell<T,E>

public class VFXObservingTableCell.VFXObservingTableCellSkin
extends VFXLabeledCellSkin<T>

Default skin implementation used by VFXObservingTableCell and extension of VFXLabeledCellSkin.

I could have overridden the base class in-line, but I decided to make it a separate class to make it easier to customize.

The update() method is overridden and functions quite differently, make sure to carefully read the documentation. The addListeners() method has also been modified to call onItemChanged() rather than update() directly when the VFXCellBase.itemProperty() changes.

Field Summary

Fields

Modifier and Type	Field	Description
protected io.github.palexdev.mfxcore.observables.When<E>	listener

Fields inherited from class io.github.palexdev.virtualizedfx.cells.VFXLabeledCellSkin

label

Constructor Summary

Constructors

Constructor	Description
VFXObservingTableCellSkin(VFXCellBase<T> cell)

Method Summary

Modifier and Type	Method	Description
protected void	addListeners()	Adds an InvalidationListener on the VFXCellBase.itemProperty() to call onItemChanged() when it changes, and an EventHandler to support "manual" updates through events of type VFXContainerEvent.UPDATE (although this should not be needed here).
void	dispose()
protected void	onItemChanged()	The auto-updating feature of this cell implementation is no magic.
protected void	update()	Updates the label's text by using the converter on the property extracted by VFXObservingTableCell.getProperty().

Methods inherited from class io.github.palexdev.virtualizedfx.cells.VFXLabeledCellSkin

computePrefWidth, initBehavior, layoutChildren

Methods inherited from class io.github.palexdev.mfxcore.controls.SkinBase

events, getBehavior, getControl, listeners

Methods inherited from class javafx.scene.control.SkinBase

computeBaselineOffset, computeMaxHeight, computeMaxWidth, computeMinHeight, computeMinWidth, computePrefHeight, consumeMouseEvents, executeAccessibleAction, getChildren, getClassCssMetaData, getCssMetaData, getNode, getSkinnable, layoutInArea, layoutInArea, layoutInArea, positionInArea, positionInArea, pseudoClassStateChanged, queryAccessibleAttribute, registerChangeListener, registerInvalidationListener, registerListChangeListener, snappedBottomInset, snappedLeftInset, snappedRightInset, snappedTopInset, snapPosition, snapPositionX, snapPositionY, snapSize, snapSizeX, snapSizeY, snapSpace, snapSpaceX, snapSpaceY, unregisterChangeListeners, unregisterInvalidationListeners, unregisterListChangeListeners

Methods inherited from class java.lang.Object

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

Methods inherited from interface javafx.scene.control.Skin

install

Field Details

listener

protected io.github.palexdev.mfxcore.observables.When<E> listener

Constructor Details

VFXObservingTableCellSkin

public VFXObservingTableCellSkin(VFXCellBase<T> cell)

Method Details

onItemChanged

protected void onItemChanged()

The auto-updating feature of this cell implementation is no magic. A simple InvalidationListener is attached to the extracted property to call update() when it changes.

This method does exactly this. When the VFXCellBase.itemProperty() changes it also means that the property extracted by VFXObservingTableCell.getProperty() is now invalid, and so is the previous listener.

Simply re-builds the listener when this happens, and by invoking VFXObservingTableCell.getProperty() we also validate the local reference to the property (to be precise the reference is stored in the cell not here in the skin). Note that this will also call update().

addListeners

protected void addListeners()

Adds an InvalidationListener on the VFXCellBase.itemProperty() to call onItemChanged() when it changes, and an EventHandler to support "manual" updates through events of type VFXContainerEvent.UPDATE (although this should not be needed here).

(Uses When and WhenEvent constructs).

Overrides:

addListeners in class VFXLabeledCellSkin<T>

See Also:

• SkinBase.listeners(When[])
• SkinBase.events(WhenEvent[])

update

protected void update()

Updates the label's text by using the converter on the property extracted by VFXObservingTableCell.getProperty().

Overrides:

update in class VFXLabeledCellSkin<T>

See Also:

• VFXSimpleTableCell.getConverter()

dispose

public void dispose()

Specified by:

dispose in interface Skin<VFXCellBase<T>>

Overrides:

dispose in class io.github.palexdev.mfxcore.controls.SkinBase<VFXCellBase<T>, CellBaseBehavior<T>>