diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/StatePropertyValueModelAdapter.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/StatePropertyValueModelAdapter.java | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/StatePropertyValueModelAdapter.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/StatePropertyValueModelAdapter.java deleted file mode 100644 index 6d179ffa63..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/StatePropertyValueModelAdapter.java +++ /dev/null @@ -1,96 +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.Model; -import org.eclipse.jpt.common.utility.model.event.StateChangeEvent; -import org.eclipse.jpt.common.utility.model.listener.StateChangeListener; - -/** - * This abstract class provides the infrastructure needed to wrap - * a model, "lazily" listen to it, and convert - * its state change notifications into property value model change - * notifications. - * <p> - * Subclasses must implement:<ul> - * <li>{@link #buildValue()}<p> - * to return the current property value, as derived from the - * current model - * </ul> - * Subclasses might want to override the following methods - * to improve performance (by not recalculating the value, if possible):<ul> - * <li>{@link #stateChanged(StateChangeEvent event)} - * </ul> - */ -public abstract class StatePropertyValueModelAdapter<T> - extends AbstractPropertyValueModelAdapter<T> -{ - /** The wrapped model. */ - protected final Model model; - - /** A listener that allows us to synch with changes to the wrapped model. */ - protected final StateChangeListener stateChangeListener; - - - // ********** constructor/initialization ********** - - /** - * Construct a property value model with the specified wrapped model. - */ - protected StatePropertyValueModelAdapter(Model model) { - super(); - this.model = model; - this.stateChangeListener = this.buildStateChangeListener(); - } - - protected StateChangeListener buildStateChangeListener() { - return new StateChangeListener() { - public void stateChanged(StateChangeEvent event) { - StatePropertyValueModelAdapter.this.stateChanged(event); - } - @Override - public String toString() { - return "state change listener"; //$NON-NLS-1$ - } - }; - } - - - // ********** behavior ********** - - /** - * Start listening to the model. - */ - @Override - protected void engageModel_() { - this.model.addStateChangeListener(this.stateChangeListener); - } - - /** - * Stop listening to the model. - */ - @Override - protected void disengageModel_() { - this.model.removeStateChangeListener(this.stateChangeListener); - } - - - // ********** state change support ********** - - /** - * The model's state changed; - * propagate the change notification appropriately. - */ - protected void stateChanged(@SuppressWarnings("unused") StateChangeEvent event) { - // by default, simply recalculate the value and fire an event - this.propertyChanged(); - } - -} |