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Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/CollectionPropertyValueModelAdapter.java')
-rw-r--r--jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/CollectionPropertyValueModelAdapter.java140
1 files changed, 0 insertions, 140 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/CollectionPropertyValueModelAdapter.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/CollectionPropertyValueModelAdapter.java
deleted file mode 100644
index a28ff711db..0000000000
--- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/CollectionPropertyValueModelAdapter.java
+++ /dev/null
@@ -1,140 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2007, 2008 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.utility.internal.model.value;
-
-import org.eclipse.jpt.utility.model.event.CollectionChangeEvent;
-import org.eclipse.jpt.utility.model.listener.CollectionChangeListener;
-import org.eclipse.jpt.utility.model.value.CollectionValueModel;
-
-/**
- * This abstract class provides the infrastructure needed to wrap
- * a collection value model, "lazily" listen to it, and convert
- * its change notifications into property value model change
- * notifications.
- *
- * Subclasses must override:
- * - #buildValue()
- * to return the current property value, as derived from the
- * current collection value
- *
- * Subclasses might want to override:
- * - #itemsAdded(CollectionChangeEvent event)
- * - #itemsRemoved(CollectionChangeEvent event)
- * - #collectionCleared(CollectionChangeEvent event)
- * - #collectionChanged(CollectionChangeEvent event)
- * to improve performance (by not recalculating the value, if possible)
- */
-public abstract class CollectionPropertyValueModelAdapter<T>
- extends AspectPropertyValueModelAdapter<T>
-{
- /** The wrapped collection value model. */
- protected final CollectionValueModel<?> collectionHolder;
-
- /** A listener that allows us to synch with changes to the wrapped collection holder. */
- protected final CollectionChangeListener collectionChangeListener;
-
-
- // ********** constructor/initialization **********
-
- /**
- * Construct a property value model with the specified wrapped
- * collection value model.
- */
- protected CollectionPropertyValueModelAdapter(CollectionValueModel<?> collectionHolder) {
- super();
- this.collectionHolder = collectionHolder;
- this.collectionChangeListener = this.buildCollectionChangeListener();
- }
-
- protected CollectionChangeListener buildCollectionChangeListener() {
- return new CollectionChangeListener() {
- public void itemsAdded(CollectionChangeEvent event) {
- CollectionPropertyValueModelAdapter.this.itemsAdded(event);
- }
- public void itemsRemoved(CollectionChangeEvent event) {
- CollectionPropertyValueModelAdapter.this.itemsRemoved(event);
- }
- public void collectionCleared(CollectionChangeEvent event) {
- CollectionPropertyValueModelAdapter.this.collectionCleared(event);
- }
- public void collectionChanged(CollectionChangeEvent event) {
- CollectionPropertyValueModelAdapter.this.collectionChanged(event);
- }
- @Override
- public String toString() {
- return "collection change listener";
- }
- };
- }
-
-
- // ********** behavior **********
-
- /**
- * Start listening to the collection holder.
- */
- @Override
- protected void engageModel_() {
- this.collectionHolder.addCollectionChangeListener(CollectionValueModel.VALUES, this.collectionChangeListener);
- }
-
- /**
- * Stop listening to the collection holder.
- */
- @Override
- protected void disengageModel_() {
- this.collectionHolder.removeCollectionChangeListener(CollectionValueModel.VALUES, this.collectionChangeListener);
- }
-
- @Override
- public void toString(StringBuilder sb) {
- sb.append(this.collectionHolder);
- }
-
-
- // ********** collection change support **********
-
- /**
- * Items were added to the wrapped collection holder;
- * propagate the change notification appropriately.
- */
- protected void itemsAdded(CollectionChangeEvent event) {
- // by default, simply recalculate the value and fire an event
- this.propertyChanged();
- }
-
- /**
- * Items were removed from the wrapped collection holder;
- * propagate the change notification appropriately.
- */
- protected void itemsRemoved(CollectionChangeEvent event) {
- // by default, simply recalculate the value and fire an event
- this.propertyChanged();
- }
-
- /**
- * The wrapped collection holder was cleared;
- * propagate the change notification appropriately.
- */
- protected void collectionCleared(CollectionChangeEvent event) {
- // by default, simply recalculate the value and fire an event
- this.propertyChanged();
- }
-
- /**
- * The value of the wrapped collection holder has changed;
- * propagate the change notification appropriately.
- */
- protected void collectionChanged(CollectionChangeEvent event) {
- // by default, simply recalculate the value and fire an event
- this.propertyChanged();
- }
-
-}

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