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Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/ListValueModelWrapper.java')
-rw-r--r--jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/ListValueModelWrapper.java207
1 files changed, 0 insertions, 207 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/ListValueModelWrapper.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/ListValueModelWrapper.java
deleted file mode 100644
index 3eb604dfd5..0000000000
--- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/ListValueModelWrapper.java
+++ /dev/null
@@ -1,207 +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 java.util.ListIterator;
-
-import org.eclipse.jpt.utility.internal.model.AbstractModel;
-import org.eclipse.jpt.utility.internal.model.ChangeSupport;
-import org.eclipse.jpt.utility.internal.model.SingleAspectChangeSupport;
-import org.eclipse.jpt.utility.model.event.ListChangeEvent;
-import org.eclipse.jpt.utility.model.listener.ListChangeListener;
-import org.eclipse.jpt.utility.model.value.ListValueModel;
-
-/**
- * This abstract class provides the infrastructure needed to wrap
- * another list value model, "lazily" listen to it, and propagate
- * its change notifications.
- */
-public abstract class ListValueModelWrapper<E>
- extends AbstractModel
-{
-
- /** The wrapped list value model. */
- protected final ListValueModel<? extends E> listHolder;
-
- /** A listener that allows us to synch with changes to the wrapped list holder. */
- protected final ListChangeListener listChangeListener;
-
-
- // ********** constructors **********
-
- /**
- * Construct a list value model with the specified wrapped
- * list value model.
- */
- protected ListValueModelWrapper(ListValueModel<? extends E> listHolder) {
- super();
- if (listHolder == null) {
- throw new NullPointerException();
- }
- this.listHolder = listHolder;
- this.listChangeListener = this.buildListChangeListener();
- }
-
-
- // ********** initialization **********
-
- @Override
- protected ChangeSupport buildChangeSupport() {
- return new SingleAspectChangeSupport(this, ListChangeListener.class, ListValueModel.LIST_VALUES);
- }
-
- protected ListChangeListener buildListChangeListener() {
- return new ListChangeListener() {
- public void itemsAdded(ListChangeEvent event) {
- ListValueModelWrapper.this.itemsAdded(event);
- }
- public void itemsRemoved(ListChangeEvent event) {
- ListValueModelWrapper.this.itemsRemoved(event);
- }
- public void itemsReplaced(ListChangeEvent event) {
- ListValueModelWrapper.this.itemsReplaced(event);
- }
- public void itemsMoved(ListChangeEvent event) {
- ListValueModelWrapper.this.itemsMoved(event);
- }
- public void listCleared(ListChangeEvent event) {
- ListValueModelWrapper.this.listCleared(event);
- }
- public void listChanged(ListChangeEvent event) {
- ListValueModelWrapper.this.listChanged(event);
- }
- @Override
- public String toString() {
- return "list change listener";
- }
- };
- }
-
-
- // ********** extend change support **********
-
- /**
- * Extend to start listening to the nested model if necessary.
- */
- @Override
- public synchronized void addListChangeListener(ListChangeListener listener) {
- if (this.hasNoListChangeListeners(ListValueModel.LIST_VALUES)) {
- this.engageModel();
- }
- super.addListChangeListener(listener);
- }
-
- /**
- * Extend to start listening to the nested model if necessary.
- */
- @Override
- public synchronized void addListChangeListener(String listName, ListChangeListener listener) {
- if (listName == ListValueModel.LIST_VALUES && this.hasNoListChangeListeners(ListValueModel.LIST_VALUES)) {
- this.engageModel();
- }
- super.addListChangeListener(listName, listener);
- }
-
- /**
- * Extend to stop listening to the nested model if necessary.
- */
- @Override
- public synchronized void removeListChangeListener(ListChangeListener listener) {
- super.removeListChangeListener(listener);
- if (this.hasNoListChangeListeners(ListValueModel.LIST_VALUES)) {
- this.disengageModel();
- }
- }
-
- /**
- * Extend to stop listening to the nested model if necessary.
- */
- @Override
- public synchronized void removeListChangeListener(String listName, ListChangeListener listener) {
- super.removeListChangeListener(listName, listener);
- if (listName == ListValueModel.LIST_VALUES && this.hasNoListChangeListeners(ListValueModel.LIST_VALUES)) {
- this.disengageModel();
- }
- }
-
-
- // ********** behavior **********
-
- /**
- * Start listening to the list holder.
- */
- protected void engageModel() {
- this.listHolder.addListChangeListener(ListValueModel.LIST_VALUES, this.listChangeListener);
- }
-
- /**
- * Stop listening to the list holder.
- */
- protected void disengageModel() {
- this.listHolder.removeListChangeListener(ListValueModel.LIST_VALUES, this.listChangeListener);
- }
-
- @Override
- public void toString(StringBuilder sb) {
- sb.append(this.listHolder);
- }
-
- // minimize suppressed warnings
- @SuppressWarnings("unchecked")
- protected ListIterator<E> items(ListChangeEvent event) {
- return (ListIterator<E>) event.items();
- }
-
- // minimize suppressed warnings
- @SuppressWarnings("unchecked")
- protected ListIterator<E> replacedItems(ListChangeEvent event) {
- return (ListIterator<E>) event.replacedItems();
- }
-
-
- // ********** list change support **********
-
- /**
- * Items were added to the wrapped list holder;
- * propagate the change notification appropriately.
- */
- protected abstract void itemsAdded(ListChangeEvent event);
-
- /**
- * Items were removed from the wrapped list holder;
- * propagate the change notification appropriately.
- */
- protected abstract void itemsRemoved(ListChangeEvent event);
-
- /**
- * Items were replaced in the wrapped list holder;
- * propagate the change notification appropriately.
- */
- protected abstract void itemsReplaced(ListChangeEvent event);
-
- /**
- * Items were moved in the wrapped list holder;
- * propagate the change notification appropriately.
- */
- protected abstract void itemsMoved(ListChangeEvent event);
-
- /**
- * The wrapped list holder was cleared;
- * propagate the change notification appropriately.
- */
- protected abstract void listCleared(ListChangeEvent event);
-
- /**
- * The value of the wrapped list holder has changed;
- * propagate the change notification appropriately.
- */
- protected abstract void listChanged(ListChangeEvent event);
-
-}

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