diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/TreePropertyValueModelAdapter.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/TreePropertyValueModelAdapter.java | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/TreePropertyValueModelAdapter.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/TreePropertyValueModelAdapter.java deleted file mode 100644 index 66258c2108..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/TreePropertyValueModelAdapter.java +++ /dev/null @@ -1,144 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2008, 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.TreeAddEvent; -import org.eclipse.jpt.common.utility.model.event.TreeChangeEvent; -import org.eclipse.jpt.common.utility.model.event.TreeClearEvent; -import org.eclipse.jpt.common.utility.model.event.TreeRemoveEvent; -import org.eclipse.jpt.common.utility.model.listener.TreeChangeListener; -import org.eclipse.jpt.common.utility.model.value.TreeValueModel; - -/** - * This abstract class provides the infrastructure needed to wrap - * a tree value model, "lazily" listen to it, and convert - * its change notifications into property value model change - * notifications. - * <p> - * Subclasses must override:<ul> - * <li>{@link #buildValue()}<p> - * to return the current property value, as derived from the - * current collection value - * </ul> - * Subclasses might want to override the following methods - * to improve performance (by not recalculating the value, if possible):<ul> - * <li>{@link #nodeAdded(TreeChangeEvent event)} - * <li>{@link #nodeRemoved(TreeChangeEvent event)} - * <li>{@link #treeCleared(TreeChangeEvent event)} - * <li>{@link #treeChanged(TreeChangeEvent event)} - * </ul> - */ -public abstract class TreePropertyValueModelAdapter<T> - extends AbstractPropertyValueModelAdapter<T> -{ - /** The wrapped tree value model. */ - protected final TreeValueModel<?> treeHolder; - - /** A listener that allows us to synch with changes to the wrapped tree holder. */ - protected final TreeChangeListener treeChangeListener; - - - // ********** constructor/initialization ********** - - /** - * Construct a property value model with the specified wrapped - * tree value model. - */ - protected TreePropertyValueModelAdapter(TreeValueModel<?> treeHolder) { - super(); - this.treeHolder = treeHolder; - this.treeChangeListener = this.buildTreeChangeListener(); - } - - protected TreeChangeListener buildTreeChangeListener() { - return new TreeChangeListener() { - public void nodeAdded(TreeAddEvent event) { - TreePropertyValueModelAdapter.this.nodeAdded(event); - } - public void nodeRemoved(TreeRemoveEvent event) { - TreePropertyValueModelAdapter.this.nodeRemoved(event); - } - public void treeCleared(TreeClearEvent event) { - TreePropertyValueModelAdapter.this.treeCleared(event); - } - public void treeChanged(TreeChangeEvent event) { - TreePropertyValueModelAdapter.this.treeChanged(event); - } - @Override - public String toString() { - return "tree change listener"; //$NON-NLS-1$ - } - }; - } - - - // ********** behavior ********** - - /** - * Start listening to the tree holder. - */ - @Override - protected void engageModel_() { - this.treeHolder.addTreeChangeListener(TreeValueModel.NODES, this.treeChangeListener); - } - - /** - * Stop listening to the tree holder. - */ - @Override - protected void disengageModel_() { - this.treeHolder.removeTreeChangeListener(TreeValueModel.NODES, this.treeChangeListener); - } - - @Override - public void toString(StringBuilder sb) { - sb.append(this.treeHolder); - } - - - // ********** state change support ********** - - /** - * Nodes were added to the wrapped tree holder; - * propagate the change notification appropriately. - */ - protected void nodeAdded(@SuppressWarnings("unused") TreeAddEvent event) { - // by default, simply recalculate the value and fire an event - this.propertyChanged(); - } - - /** - * Nodes were removed from the wrapped tree holder; - * propagate the change notification appropriately. - */ - protected void nodeRemoved(@SuppressWarnings("unused") TreeRemoveEvent event) { - // by default, simply recalculate the value and fire an event - this.propertyChanged(); - } - - /** - * The wrapped tree holder was cleared; - * propagate the change notification appropriately. - */ - protected void treeCleared(@SuppressWarnings("unused") TreeClearEvent event) { - // by default, simply recalculate the value and fire an event - this.propertyChanged(); - } - - /** - * The wrapped tree holder changed; - * propagate the change notification appropriately. - */ - protected void treeChanged(@SuppressWarnings("unused") TreeChangeEvent event) { - // by default, simply recalculate the value and fire an event - this.propertyChanged(); - } - -} |