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Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/AspectTreeValueModelAdapter.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/AspectTreeValueModelAdapter.java | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/AspectTreeValueModelAdapter.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/AspectTreeValueModelAdapter.java deleted file mode 100644 index 6989991744..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/AspectTreeValueModelAdapter.java +++ /dev/null @@ -1,119 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2009 Oracle. 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: - * Oracle - initial API and implementation - ******************************************************************************/ -package org.eclipse.jpt.common.utility.internal.model.value; - -import java.util.Collection; -import java.util.EventListener; -import java.util.Iterator; - -import org.eclipse.jpt.common.utility.internal.CollectionTools; -import org.eclipse.jpt.common.utility.internal.iterators.EmptyIterator; -import org.eclipse.jpt.common.utility.model.listener.TreeChangeListener; -import org.eclipse.jpt.common.utility.model.value.PropertyValueModel; -import org.eclipse.jpt.common.utility.model.value.TreeValueModel; - -/** - * This {@link AspectAdapter} provides basic tree change support. - * This converts an "aspect" (as defined by subclasses) into - * a single {@link #NODES} tree. - * <p> - * The typical subclass will override the following methods:<ul> - * <li>{@link #engageSubject_()}<p> - * implement this method to add the appropriate listener to the subject - * <li>{@link #disengageSubject_()}<p> - * implement this method to remove the appropriate listener from the subject - * <li>{@link #nodes_()}<p> - * at the very minimum, override this method to return an iterator - * on the subject's tree aspect; it does not need to be overridden if - * {@link #nodes()} is overridden and its behavior changed - * <li>{@link #nodes()}<p> - * override this method only if returning an empty iterator when the - * subject is null is unacceptable - * </ul> - * To notify listeners, subclasses can call {@link #treeChanged()} - * whenever the aspect has changed. - */ -public abstract class AspectTreeValueModelAdapter<S, E> - extends AspectAdapter<S> - implements TreeValueModel<E> -{ - - // ********** constructors ********** - - /** - * Construct a tree value model adapter for an aspect of the - * specified subject. - */ - protected AspectTreeValueModelAdapter(PropertyValueModel<? extends S> subjectHolder) { - super(subjectHolder); - } - - - // ********** TreeValueModel implementation ********** - - /** - * Return the nodes of the subject's tree aspect. - */ - public Iterator<E> nodes() { - return (this.subject == null) ? EmptyIterator.<E>instance() : this.nodes_(); - } - - /** - * Return the nodes of the subject's tree aspect. - * At this point we can be sure the subject is not null. - * @see #nodes() - */ - protected Iterator<E> nodes_() { - throw new RuntimeException("This method was not overridden."); //$NON-NLS-1$ - } - - - // ********** AspectAdapter implementation ********** - - @Override - protected Object getValue() { - return this.buildValueCollection(); - } - - @Override - protected Class<? extends EventListener> getListenerClass() { - return TreeChangeListener.class; - } - - @Override - protected String getListenerAspectName() { - return NODES; - } - - @Override - protected boolean hasListeners() { - return this.hasAnyTreeChangeListeners(NODES); - } - - @Override - protected void fireAspectChanged(Object oldValue, Object newValue) { - @SuppressWarnings("unchecked") Collection<E> newNodes = (Collection<E>) newValue; - this.fireTreeChanged(NODES, newNodes); - } - - protected void treeChanged() { - this.fireTreeChanged(NODES, this.buildValueCollection()); - } - - protected Collection<E> buildValueCollection() { - return CollectionTools.collection(this.nodes()); - } - - @Override - public void toString(StringBuilder sb) { - sb.append(this.buildValueCollection()); - } - -} |