com.jgoodies.forms.layout

Class FormLayout.ComponentSizeCache

java.lang.Object

com.jgoodies.forms.layout.FormLayout.ComponentSizeCache

All Implemented Interfaces:

java.io.Serializable

Enclosing class:

FormLayout

private static final class FormLayout.ComponentSizeCache
extends java.lang.Object
implements java.io.Serializable

A cache for component minimum and preferred sizes. Used to reduce the requests to determine a component's size.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<java.awt.Component,java.awt.Dimension>	minimumSizes Maps components to their minimum sizes.
private java.util.Map<java.awt.Component,java.awt.Dimension>	preferredSizes Maps components to their preferred sizes.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ComponentSizeCache(int initialCapacity) Constructs a ComponentSizeCache.

Method Summary

Modifier and Type	Method and Description
(package private) java.awt.Dimension	getMinimumSize(java.awt.Component component) Returns the minimum size for the given component.
(package private) java.awt.Dimension	getPreferredSize(java.awt.Component component) Returns the preferred size for the given component.
(package private) void	invalidate() Invalidates the cache.
(package private) void	removeEntry(java.awt.Component component)

Methods inherited from class java.lang.Object

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

Field Detail

minimumSizes

private final java.util.Map<java.awt.Component,java.awt.Dimension> minimumSizes

Maps components to their minimum sizes.

preferredSizes

private final java.util.Map<java.awt.Component,java.awt.Dimension> preferredSizes

Maps components to their preferred sizes.

Constructor Detail

ComponentSizeCache

private ComponentSizeCache(int initialCapacity)

Constructs a ComponentSizeCache.

Parameters:

initialCapacity - the initial cache capacity

Method Detail

invalidate

void invalidate()

Invalidates the cache. Clears all stored size information.

getMinimumSize

java.awt.Dimension getMinimumSize(java.awt.Component component)

Returns the minimum size for the given component. Tries to look up the value from the cache; lazily creates the value if it has not been requested before.

Parameters:

component - the component to compute the minimum size

Returns:

the component's minimum size

getPreferredSize

java.awt.Dimension getPreferredSize(java.awt.Component component)

Returns the preferred size for the given component. Tries to look up the value from the cache; lazily creates the value if it has not been requested before.

Parameters:

component - the component to compute the preferred size

Returns:

the component's preferred size

removeEntry

void removeEntry(java.awt.Component component)