Mercurial > projects > dwt2
diff org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/set/ObservableSet.d @ 78:0a55d2d5a946
Added file for databinding
author | Frank Benoit <benoit@tionex.de> |
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date | Tue, 14 Apr 2009 11:35:29 +0200 |
parents | |
children | 383ce7bd736b |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/set/ObservableSet.d Tue Apr 14 11:35:29 2009 +0200 @@ -0,0 +1,210 @@ +/******************************************************************************* + * Copyright (c) 2006, 2008 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + * Matthew Hall - bug 208332 + *******************************************************************************/ + +module org.eclipse.core.databinding.observable.set.ObservableSet; + +import java.lang.all; + +import java.util.Collection; +import java.util.Iterator; +import java.util.Set; + +import org.eclipse.core.databinding.observable.AbstractObservable; +import org.eclipse.core.databinding.observable.ObservableTracker; +import org.eclipse.core.databinding.observable.Realm; + +/** + * + * Abstract implementation of {@link IObservableSet}. + * + * <p> + * This class is thread safe. All state accessing methods must be invoked from + * the {@link Realm#isCurrent() current realm}. Methods for adding and removing + * listeners may be invoked from any thread. + * </p> + * + * @since 1.0 + * + */ +public abstract class ObservableSet : AbstractObservable , + IObservableSet { + + protected Set wrappedSet; + + private bool stale = false; + + protected Object elementType; + + protected this(Set wrappedSet, Object elementType) { + this(Realm.getDefault(), wrappedSet, elementType); + } + + protected this(Realm realm, Set wrappedSet, Object elementType) { + super(realm); + this.wrappedSet = wrappedSet; + this.elementType = elementType; + } + + public synchronized void addSetChangeListener(ISetChangeListener listener) { + addListener(SetChangeEvent.TYPE, listener); + } + + public synchronized void removeSetChangeListener(ISetChangeListener listener) { + removeListener(SetChangeEvent.TYPE, listener); + } + + protected void fireSetChange(SetDiff diff) { + // fire general change event first + super.fireChange(); + + fireEvent(new SetChangeEvent(this, diff)); + } + + public bool contains(Object o) { + getterCalled(); + return wrappedSet.contains(o); + } + + public bool containsAll(Collection c) { + getterCalled(); + return wrappedSet.containsAll(c); + } + + public override bool opEquals(Object o) { + getterCalled(); + return wrappedSet.equals(o); + } + + public int hashCode() { + getterCalled(); + return wrappedSet.hashCode(); + } + + public bool isEmpty() { + getterCalled(); + return wrappedSet.isEmpty(); + } + + public Iterator iterator() { + getterCalled(); + final Iterator wrappedIterator = wrappedSet.iterator(); + return new class() Iterator { + + public void remove() { + throw new UnsupportedOperationException(); + } + + public bool hasNext() { + ObservableTracker.getterCalled(this.outer); + return wrappedIterator.hasNext(); + } + + public Object next() { + ObservableTracker.getterCalled(this.outer); + return wrappedIterator.next(); + } + }; + } + + public int size() { + getterCalled(); + return wrappedSet.size(); + } + + public Object[] toArray() { + getterCalled(); + return wrappedSet.toArray(); + } + + public Object[] toArray(Object[] a) { + getterCalled(); + return wrappedSet.toArray(a); + } + + public String toString() { + getterCalled(); + return wrappedSet.toString(); + } + + protected void getterCalled() { + ObservableTracker.getterCalled(this); + } + + public bool add(Object o) { + throw new UnsupportedOperationException(); + } + + public bool addAll(Collection c) { + throw new UnsupportedOperationException(); + } + + public bool remove(Object o) { + throw new UnsupportedOperationException(); + } + + public bool removeAll(Collection c) { + throw new UnsupportedOperationException(); + } + + public bool retainAll(Collection c) { + throw new UnsupportedOperationException(); + } + + public void clear() { + throw new UnsupportedOperationException(); + } + + /** + * @return Returns the stale state. + */ + public bool isStale() { + getterCalled(); + return stale; + } + + /** + * @param stale + * The stale state to set. This will fire a stale event if the + * given bool is true and this observable set was not already + * stale. + */ + public void setStale(bool stale) { + checkRealm(); + bool wasStale = this.stale; + this.stale = stale; + if (!wasStale && stale) { + fireStale(); + } + } + + /** + * @param wrappedSet The wrappedSet to set. + */ + protected void setWrappedSet(Set wrappedSet) { + this.wrappedSet = wrappedSet; + } + + protected void fireChange() { + throw new RuntimeException("fireChange should not be called, use fireSetChange() instead"); //$NON-NLS-1$ + } + + /* (non-Javadoc) + * @see org.eclipse.jface.provisional.databinding.observable.AbstractObservable#dispose() + */ + public synchronized void dispose() { + super.dispose(); + } + + public Object getElementType() { + return elementType; + } +}