flowless 0.7.4 · org.fxmisc.flowless.SizeTracker · APIdia, the JavaDoc alternative

Estimates the size of the entire viewport (if it was actually completely rendered) based on the known sizes of the Cells whose nodes are currently displayed in the viewport and an estimated average of Cells whose nodes are not displayed in the viewport. The meaning of breadthForCells and totalLengthEstimate are dependent upon which implementation of OrientationHelper is used.

Field Summary

Modifier and Type	Field and Description
private final Val<Double>	averageLengthEstimate Stores either null or the average length of the cells' nodes currently displayed in the viewport
private final Val<Double>	breadthForCells Stores either the greatest minimum cell's node's breadth or the viewport's breadth
private final MemoizationList<Double>	breadths
private final MemoizationList<? extends Cell<?, ?>>	cells
private final Val<Double>	lengthOffsetEstimate
private final MemoizationList<Double>	lengths
private final Val<Double>	maxKnownMinBreadth
private final OrientationHelper	orientation
private final Subscription	subscription
private final Val<Double>	totalLengthEstimate
private final ObservableObjectValue<Bounds>	viewportBounds

Constructor Summary

Access	Constructor and Description
public	SizeTracker(OrientationHelper if vertical, breadth = width and length = height; if horizontal, breadth = height and length = width orientation, ObservableObjectValue<Bounds> viewportBounds, MemoizationList<? extends Cell<?, ?>> lazyCells) Constructs a SizeTracker

Method Summary

Modifier and Type	Method and Description
public Val<Double>	averageLengthEstimateProperty()
private static <T> Val<T>	avoidFalseInvalidations(Val<T> src)
public double	breadthFor(int itemIndex)
public void	dispose()
public void	forgetSizeOf(int itemIndex)
public Optional<Double>	getAverageLengthEstimate()
public double	getCellLayoutBreadth()
public double	getViewportBreadth()
public double	getViewportLength()
public double	lengthFor(int itemIndex)
public Val<Double>	lengthOffsetEstimateProperty()
public Val<Double>	maxCellBreadthProperty()
public Val<Double>	totalLengthEstimateProperty()

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

averageLengthEstimate	back to summary
private final Val<Double> averageLengthEstimate Stores either null or the average length of the cells' nodes currently displayed in the viewport

breadthForCells	back to summary
private final Val<Double> breadthForCells Stores either the greatest minimum cell's node's breadth or the viewport's breadth

breadths	back to summary
private final MemoizationList<Double> breadths

cells	back to summary
private final MemoizationList<? extends Cell<?, ?>> cells

lengthOffsetEstimate	back to summary
private final Val<Double> lengthOffsetEstimate

lengths	back to summary
private final MemoizationList<Double> lengths

maxKnownMinBreadth	back to summary
private final Val<Double> maxKnownMinBreadth

orientation	back to summary
private final OrientationHelper orientation

subscription	back to summary
private final Subscription subscription

totalLengthEstimate	back to summary
private final Val<Double> totalLengthEstimate

viewportBounds	back to summary
private final ObservableObjectValue<Bounds> viewportBounds

Constructor Detail

SizeTracker	back to summary
public SizeTracker(OrientationHelper orientation, ObservableObjectValue<Bounds> viewportBounds, MemoizationList<? extends Cell<?, ?>> lazyCells) Constructs a SizeTracker Parameters orientation:OrientationHelper if vertical, breadth = width and length = height; if horizontal, breadth = height and length = width

SizeTracker

back to summary

public SizeTracker(OrientationHelper orientation, ObservableObjectValue<Bounds> viewportBounds, MemoizationList<? extends Cell<?, ?>> lazyCells)

Constructs a SizeTracker

Parameters

orientation:OrientationHelper: if vertical, breadth = width and length = height; if horizontal, breadth = height and length = width

Method Detail

averageLengthEstimateProperty	back to summary
public Val<Double> averageLengthEstimateProperty()

avoidFalseInvalidations	back to summary
private static <T> Val<T> avoidFalseInvalidations(Val<T> src)

breadthFor	back to summary
public double breadthFor(int itemIndex)

dispose	back to summary
public void dispose()

forgetSizeOf	back to summary
public void forgetSizeOf(int itemIndex)

getAverageLengthEstimate	back to summary
public Optional<Double> getAverageLengthEstimate()

getCellLayoutBreadth	back to summary
public double getCellLayoutBreadth()

getViewportBreadth	back to summary
public double getViewportBreadth()

getViewportLength	back to summary
public double getViewportLength()

lengthFor	back to summary
public double lengthFor(int itemIndex)

lengthOffsetEstimateProperty	back to summary
public Val<Double> lengthOffsetEstimateProperty()

maxCellBreadthProperty	back to summary
public Val<Double> maxCellBreadthProperty()

totalLengthEstimateProperty	back to summary
public Val<Double> totalLengthEstimateProperty()