diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/ListValueModelWrapper.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/ListValueModelWrapper.java | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/ListValueModelWrapper.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/ListValueModelWrapper.java deleted file mode 100644 index 7e01a399f3..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/ListValueModelWrapper.java +++ /dev/null @@ -1,164 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2007, 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 org.eclipse.jpt.common.utility.model.event.ListAddEvent; -import org.eclipse.jpt.common.utility.model.event.ListChangeEvent; -import org.eclipse.jpt.common.utility.model.event.ListClearEvent; -import org.eclipse.jpt.common.utility.model.event.ListMoveEvent; -import org.eclipse.jpt.common.utility.model.event.ListRemoveEvent; -import org.eclipse.jpt.common.utility.model.event.ListReplaceEvent; -import org.eclipse.jpt.common.utility.model.listener.ListChangeListener; -import org.eclipse.jpt.common.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. Subclasses must implement the appropriate - * {@link ListValueModel}. - */ -public abstract class ListValueModelWrapper<E> - extends AbstractListValueModel -{ - /** 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 ********** - - protected ListChangeListener buildListChangeListener() { - return new ListChangeListener() { - public void itemsAdded(ListAddEvent event) { - ListValueModelWrapper.this.itemsAdded(event); - } - public void itemsRemoved(ListRemoveEvent event) { - ListValueModelWrapper.this.itemsRemoved(event); - } - public void itemsReplaced(ListReplaceEvent event) { - ListValueModelWrapper.this.itemsReplaced(event); - } - public void itemsMoved(ListMoveEvent event) { - ListValueModelWrapper.this.itemsMoved(event); - } - public void listCleared(ListClearEvent event) { - ListValueModelWrapper.this.listCleared(event); - } - public void listChanged(ListChangeEvent event) { - ListValueModelWrapper.this.listChanged(event); - } - @Override - public String toString() { - return "list change listener"; //$NON-NLS-1$ - } - }; - } - - - // ********** behavior ********** - - /** - * Start listening to the list holder. - */ - @Override - protected void engageModel() { - this.listHolder.addListChangeListener(ListValueModel.LIST_VALUES, this.listChangeListener); - } - - /** - * Stop listening to the list holder. - */ - @Override - protected void disengageModel() { - this.listHolder.removeListChangeListener(ListValueModel.LIST_VALUES, this.listChangeListener); - } - - // minimized scope of suppressed warnings - @SuppressWarnings("unchecked") - protected Iterable<E> getItems(ListAddEvent event) { - return (Iterable<E>) event.getItems(); - } - - // minimized scope of suppressed warnings - @SuppressWarnings("unchecked") - protected Iterable<E> getItems(ListRemoveEvent event) { - return (Iterable<E>) event.getItems(); - } - - // minimized scope of suppressed warnings - @SuppressWarnings("unchecked") - protected Iterable<E> getNewItems(ListReplaceEvent event) { - return (Iterable<E>) event.getNewItems(); - } - - // minimized scope of suppressed warnings - @SuppressWarnings("unchecked") - protected Iterable<E> getOldItems(ListReplaceEvent event) { - return (Iterable<E>) event.getOldItems(); - } - - - // ********** list change support ********** - - /** - * Items were added to the wrapped list holder; - * propagate the change notification appropriately. - */ - protected abstract void itemsAdded(ListAddEvent event); - - /** - * Items were removed from the wrapped list holder; - * propagate the change notification appropriately. - */ - protected abstract void itemsRemoved(ListRemoveEvent event); - - /** - * Items were replaced in the wrapped list holder; - * propagate the change notification appropriately. - */ - protected abstract void itemsReplaced(ListReplaceEvent event); - - /** - * Items were moved in the wrapped list holder; - * propagate the change notification appropriately. - */ - protected abstract void itemsMoved(ListMoveEvent event); - - /** - * The wrapped list holder was cleared; - * propagate the change notification appropriately. - */ - protected abstract void listCleared(ListClearEvent event); - - /** - * The value of the wrapped list holder has changed; - * propagate the change notification appropriately. - */ - protected abstract void listChanged(ListChangeEvent event); - -} |