diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/CollectionValueModelWrapper.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/CollectionValueModelWrapper.java | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/CollectionValueModelWrapper.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/CollectionValueModelWrapper.java deleted file mode 100644 index a791dcb3d3..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/CollectionValueModelWrapper.java +++ /dev/null @@ -1,132 +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.CollectionAddEvent; -import org.eclipse.jpt.common.utility.model.event.CollectionChangeEvent; -import org.eclipse.jpt.common.utility.model.event.CollectionClearEvent; -import org.eclipse.jpt.common.utility.model.event.CollectionRemoveEvent; -import org.eclipse.jpt.common.utility.model.listener.CollectionChangeListener; -import org.eclipse.jpt.common.utility.model.value.CollectionValueModel; - -/** - * This abstract class provides the infrastructure needed to wrap - * another collection value model, "lazily" listen to it, and propagate - * its change notifications. Subclasses must implement the appropriate - * {@link CollectionValueModel}. - */ -public abstract class CollectionValueModelWrapper<E> - extends AbstractCollectionValueModel -{ - /** The wrapped collection value model. */ - protected final CollectionValueModel<? extends E> collectionHolder; - - /** A listener that allows us to synch with changes to the wrapped collection holder. */ - protected final CollectionChangeListener collectionChangeListener; - - - // ********** constructors ********** - - /** - * Construct a collection value model with the specified wrapped - * collection value model. - */ - protected CollectionValueModelWrapper(CollectionValueModel<? extends E> collectionHolder) { - super(); - this.collectionHolder = collectionHolder; - this.collectionChangeListener = this.buildCollectionChangeListener(); - } - - - // ********** initialization ********** - - protected CollectionChangeListener buildCollectionChangeListener() { - return new CollectionChangeListener() { - public void itemsAdded(CollectionAddEvent event) { - CollectionValueModelWrapper.this.itemsAdded(event); - } - public void itemsRemoved(CollectionRemoveEvent event) { - CollectionValueModelWrapper.this.itemsRemoved(event); - } - public void collectionCleared(CollectionClearEvent event) { - CollectionValueModelWrapper.this.collectionCleared(event); - } - public void collectionChanged(CollectionChangeEvent event) { - CollectionValueModelWrapper.this.collectionChanged(event); - } - @Override - public String toString() { - return "collection change listener"; //$NON-NLS-1$ - } - }; - } - - - // ********** AbstractCollectionValueModel implementation ********** - - /** - * 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); - } - - - // ********** helper methods ********** - - // minimize scope of suppressed warnings - @SuppressWarnings("unchecked") - protected Iterable<E> getItems(CollectionAddEvent event) { - return (Iterable<E>) event.getItems(); - } - - // minimize scope of suppressed warnings - @SuppressWarnings("unchecked") - protected Iterable<E> getItems(CollectionRemoveEvent event) { - return (Iterable<E>) event.getItems(); - } - - - // ********** collection change support ********** - - /** - * Items were added to the wrapped collection holder; - * propagate the change notification appropriately. - */ - protected abstract void itemsAdded(CollectionAddEvent event); - - /** - * Items were removed from the wrapped collection holder; - * propagate the change notification appropriately. - */ - protected abstract void itemsRemoved(CollectionRemoveEvent event); - - /** - * The wrapped collection holder was cleared; - * propagate the change notification appropriately. - */ - protected abstract void collectionCleared(CollectionClearEvent event); - - /** - * The value of the wrapped collection holder has changed; - * propagate the change notification appropriately. - */ - protected abstract void collectionChanged(CollectionChangeEvent event); - -} |