Attachment 281789 Details for Bug 560018 – self-contained example

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self-contained example

MappedSet.java (text/x-java), 992 bytes, created by Stephan Herrmann

on 2020-02-11 14:32:46 EST

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Creator: Stephan Herrmann

Created: 2020-02-11 14:32:46 EST

Size: 992 bytes

patch

obsolete

>package p1;
>
>import java.util.*;
>
>@FunctionalInterface
>interface ISetChangeListener<E> extends IObservablesListener {
>	void handleSetChange(SetChangeEvent<? extends E> event);
>}
>interface IObservablesListener {}
>class SetChangeEvent<E> {
>    	public SetDiff<E> diff;
>}
>abstract class SetDiff<E> {
>	public abstract Set<E> getAdditions();
>}
>
>@SuppressWarnings({"rawtypes", "unchecked", "javadoc"})
>public class MappedSet {
>	private final Map wrappedMap;
>	private ISetChangeListener domainListener = event -> {
>		Set additions = new HashSet();
>		for (Iterator it = event.diff.getAdditions().iterator(); it.hasNext();) {
>			Object added = it.next();
>			Object mapValue = wrappedMap.get(added);
>			if (handleAddition(mapValue)) {
>				additions.add(mapValue);
>			}
>		}
>	};
>
>	public MappedSet(Map map) {
>		this.wrappedMap = map;
>	}
>
>	public ISetChangeListener getDomainListener() {
>		return domainListener;
>	}
>
>	private boolean handleAddition(Object o) {
>		return o.equals(wrappedMap.get(0));
>	}
>
>}

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