com.diffplug.common.swt

Class OnePerWidget<WidgetType extends Widget,T>

java.lang.Object

com.diffplug.common.swt.OnePerWidget<WidgetType,T>

public abstract class OnePerWidget<WidgetType extends Widget,T>
extends Object

Maintains a cache of values which are mapped to SWT widgets. The cache is automatically updated as these widgets are disposed.

Useful for implementing resource managers, such as ColorPool.

Constructor Summary

Constructors

Constructor and Description
OnePerWidget()

Method Summary

Modifier and Type	Method and Description
protected abstract T	create(WidgetType ctl) Creates a new object for the control.
T	forWidget(WidgetType ctl) Returns the object for the given control.
static <WidgetType extends Widget,T> OnePerWidget<WidgetType,T>	from(Function<? super WidgetType,? extends T> creator) Creates a OnePerWidget instance where objects are created using the given function.

Methods inherited from class java.lang.Object

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

Constructor Detail

OnePerWidget

public OnePerWidget()

Method Detail

from

public static <WidgetType extends Widget,T> OnePerWidget<WidgetType,T> from(Function<? super WidgetType,? extends T> creator)

Creates a OnePerWidget instance where objects are created using the given function.

forWidget

public T forWidget(WidgetType ctl)

Returns the object for the given control.

create

protected abstract T create(WidgetType ctl)

Creates a new object for the control.