diff options
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/swing/SpinnerModelAdapter.java')
-rw-r--r-- | jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/swing/SpinnerModelAdapter.java | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/swing/SpinnerModelAdapter.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/swing/SpinnerModelAdapter.java deleted file mode 100644 index 6cd893d878..0000000000 --- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/swing/SpinnerModelAdapter.java +++ /dev/null @@ -1,208 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2007, 2008 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.utility.internal.model.value.swing; - -import javax.swing.AbstractSpinnerModel; -import javax.swing.SpinnerModel; -import javax.swing.SpinnerNumberModel; -import javax.swing.event.ChangeEvent; -import javax.swing.event.ChangeListener; - -import org.eclipse.jpt.utility.internal.StringTools; -import org.eclipse.jpt.utility.internal.model.listener.awt.AWTPropertyChangeListenerWrapper; -import org.eclipse.jpt.utility.model.event.PropertyChangeEvent; -import org.eclipse.jpt.utility.model.listener.PropertyChangeListener; -import org.eclipse.jpt.utility.model.value.PropertyValueModel; -import org.eclipse.jpt.utility.model.value.WritablePropertyValueModel; - -/** - * This javax.swing.SpinnerModel can be used to keep a ChangeListener - * (e.g. a JSpinner) in synch with a PropertyValueModel that holds a value. - * - * Note: it is likely you want to use one of the following classes instead of - * this one: - * DateSpinnerModelAdapter - * NumberSpinnerModelAdapter - * ListSpinnerModelAdapter - * - * NB: This model should only be used for values that have a fairly - * inexpensive #equals() implementation. - * @see #synchronizeDelegate(Object) - */ -public class SpinnerModelAdapter - extends AbstractSpinnerModel -{ - /** The delegate spinner model whose behavior we "enhance". */ - protected final SpinnerModel delegate; - - /** A listener that allows us to forward any changes made to the delegate spinner model. */ - protected final ChangeListener delegateListener; - - /** A value model on the underlying value. */ - protected final WritablePropertyValueModel<Object> valueHolder; - - /** A listener that allows us to synchronize with changes made to the underlying value. */ - protected final PropertyChangeListener valueListener; - - - // ********** constructors ********** - - /** - * Constructor - the value holder and delegate are required. - */ - public SpinnerModelAdapter(WritablePropertyValueModel<Object> valueHolder, SpinnerModel delegate) { - super(); - if (valueHolder == null || delegate == null) { - throw new NullPointerException(); - } - this.valueHolder = valueHolder; - this.delegate = delegate; - // postpone listening to the underlying value - // until we have listeners ourselves... - this.valueListener = this.buildValueListener(); - this.delegateListener = this.buildDelegateListener(); - } - - /** - * Constructor - the value holder is required. - * This will wrap a simple number spinner model. - */ - public SpinnerModelAdapter(WritablePropertyValueModel<Object> valueHolder) { - this(valueHolder, new SpinnerNumberModel()); - } - - - // ********** initialization ********** - - protected PropertyChangeListener buildValueListener() { - return new AWTPropertyChangeListenerWrapper(this.buildValueListener_()); - } - - protected PropertyChangeListener buildValueListener_() { - return new PropertyChangeListener() { - public void propertyChanged(PropertyChangeEvent event) { - SpinnerModelAdapter.this.valueChanged(event); - } - @Override - public String toString() { - return "value listener"; - } - }; - } - - /** - * expand access a bit for inner class - */ - @Override - protected void fireStateChanged() { - super.fireStateChanged(); - } - - protected ChangeListener buildDelegateListener() { - return new ChangeListener() { - public void stateChanged(ChangeEvent event) { - // forward the event, with this as the source - SpinnerModelAdapter.this.fireStateChanged(); - } - @Override - public String toString() { - return "delegate listener"; - } - }; - } - - - // ********** SpinnerModel implementation ********** - - public Object getValue() { - return this.delegate.getValue(); - } - - /** - * Extend to update the underlying value directly. - * The resulting event will be ignored: @see #synchronizeDelegate(Object). - */ - public void setValue(Object value) { - this.delegate.setValue(value); - this.valueHolder.setValue(value); - } - - public Object getNextValue() { - return this.delegate.getNextValue(); - } - - public Object getPreviousValue() { - return this.delegate.getPreviousValue(); - } - - /** - * Extend to start listening to the underlying value if necessary. - */ - @Override - public void addChangeListener(ChangeListener listener) { - if (this.listenerList.getListenerCount(ChangeListener.class) == 0) { - this.delegate.addChangeListener(this.delegateListener); - this.engageValueHolder(); - } - super.addChangeListener(listener); - } - - /** - * Extend to stop listening to the underlying value if appropriate. - */ - @Override - public void removeChangeListener(ChangeListener listener) { - super.removeChangeListener(listener); - if (this.listenerList.getListenerCount(ChangeListener.class) == 0) { - this.disengageValueHolder(); - this.delegate.removeChangeListener(this.delegateListener); - } - } - - - // ********** behavior ********** - - /** - * A third party has modified the underlying value. - * Synchronize the delegate model accordingly. - */ - protected void valueChanged(PropertyChangeEvent event) { - this.synchronizeDelegate(event.getNewValue()); - } - - /** - * Set the delegate's value if it has changed. - */ - protected void synchronizeDelegate(Object value) { - // check to see whether the delegate has already been synchronized - // (via #setValue()) - if ( ! this.delegate.getValue().equals(value)) { - this.delegate.setValue(value); - } - } - - protected void engageValueHolder() { - this.valueHolder.addPropertyChangeListener(PropertyValueModel.VALUE, this.valueListener); - this.synchronizeDelegate(this.valueHolder.getValue()); - } - - protected void disengageValueHolder() { - this.valueHolder.removePropertyChangeListener(PropertyValueModel.VALUE, this.valueListener); - } - - - // ********** standard methods ********** - - @Override - public String toString() { - return StringTools.buildToStringFor(this, this.valueHolder); - } - -} |