diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/PropertyValueModelWrapper.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/PropertyValueModelWrapper.java | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/PropertyValueModelWrapper.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/PropertyValueModelWrapper.java deleted file mode 100644 index 241b85d609..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/PropertyValueModelWrapper.java +++ /dev/null @@ -1,92 +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.PropertyChangeEvent; -import org.eclipse.jpt.common.utility.model.listener.PropertyChangeListener; -import org.eclipse.jpt.common.utility.model.value.PropertyValueModel; - -/** - * This abstract class provides the infrastructure needed to wrap - * another property value model, "lazily" listen to it, and propagate - * its change notifications. Subclasses must implement the appropriate - * {@link PropertyValueModel}. - * <p> - * Subclasses must implement the following methods:<ul> - * <li>{@link #valueChanged(PropertyChangeEvent)}<p> - * implement this method to propagate the appropriate change notification - * </ul> - */ -public abstract class PropertyValueModelWrapper<V> - extends AbstractPropertyValueModel -{ - /** The wrapped property value model. */ - protected final PropertyValueModel<? extends V> valueHolder; - - /** A listener that allows us to synch with changes to the wrapped value holder. */ - protected final PropertyChangeListener valueChangeListener; - - - // ********** constructors/initialization ********** - - /** - * Construct a property value model with the specified wrapped - * property value model. The value holder is required. - */ - protected PropertyValueModelWrapper(PropertyValueModel<? extends V> valueHolder) { - super(); - if (valueHolder == null) { - throw new NullPointerException(); - } - this.valueHolder = valueHolder; - this.valueChangeListener = this.buildValueChangeListener(); - } - - protected PropertyChangeListener buildValueChangeListener() { - return new PropertyChangeListener() { - public void propertyChanged(PropertyChangeEvent event) { - PropertyValueModelWrapper.this.valueChanged(event); - } - @Override - public String toString() { - return "value change listener"; //$NON-NLS-1$ - } - }; - } - - - // ********** behavior ********** - - /** - * Begin listening to the value holder. - */ - @Override - protected void engageModel() { - this.valueHolder.addPropertyChangeListener(PropertyValueModel.VALUE, this.valueChangeListener); - } - - /** - * Stop listening to the value holder. - */ - @Override - protected void disengageModel() { - this.valueHolder.removePropertyChangeListener(PropertyValueModel.VALUE, this.valueChangeListener); - } - - - // ********** property change support ********** - - /** - * The value of the wrapped value holder has changed; - * propagate the change notification appropriately. - */ - protected abstract void valueChanged(PropertyChangeEvent event); - -} |