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/*******************************************************************************
* Copyright (c) 2003, 2005 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.j2ee.internal.webservice.adapter;
import java.util.Iterator;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.swt.custom.CCombo;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
public class AdapterCCombo extends AdapterImpl implements SelectionListener {
private EObject eObject_;
private EStructuralFeature feature_;
private EStructuralFeature displayFeature_;
private CCombo combo_;
private String defaultDisplayString_;
public AdapterCCombo(EStructuralFeature feature, EStructuralFeature displayFeature, CCombo combo, String defaultDisplayString) {
super();
eObject_ = null;
feature_ = feature;
displayFeature_ = displayFeature;
combo_ = combo;
combo_.addSelectionListener(this);
defaultDisplayString_ = (defaultDisplayString != null) ? defaultDisplayString : ""; //$NON-NLS-1$
}
public AdapterCCombo(EStructuralFeature feature, EStructuralFeature displayFeature, CCombo combo) {
this(feature, displayFeature, combo, null);
}
public AdapterCCombo(EObject eObject, EStructuralFeature feature, EStructuralFeature displayFeature, CCombo combo) {
this(eObject, feature, displayFeature, combo, null);
}
public AdapterCCombo(EObject eObject, EStructuralFeature feature, EStructuralFeature displayFeature, CCombo combo, String defaultDisplayString) {
this(feature, displayFeature, combo, defaultDisplayString);
adapt(eObject);
}
public void notifyChanged(Notification msg) {
Object notifier = msg.getNotifier();
if (notifier == eObject_) {
int type = msg.getEventType();
if (type == Notification.SET || type == Notification.UNSET || type == Notification.ADD || type == Notification.REMOVE || type == Notification.ADD_MANY || type == Notification.REMOVE_MANY)
populateCombo();
} else if (msg.getFeature() == displayFeature_)
populateCombo();
}
private void populateCombo() {
if (eObject_ != null) {
Object object = eObject_.eGet(feature_);
if (object != null) {
if (combo_.isDisposed())
return;
int selectionIndex = combo_.getSelectionIndex();
String text = combo_.getText();
combo_.removeAll();
if (object instanceof EList) {
EList eList = (EList) object;
for (Iterator it = eList.iterator(); it.hasNext();)
combo_.add(toDisplayString(((EObject) it.next()).eGet(displayFeature_)));
} else
combo_.add(toDisplayString(((EObject) object).eGet(displayFeature_)));
int newIndex = combo_.indexOf(text);
if (selectionIndex != -1 && newIndex != -1)
combo_.select(newIndex);
else
combo_.select(0);
}
}
}
private String toDisplayString(Object object) {
if (object != null) {
String s = object.toString();
if (s != null && s.length() > 0)
return s;
}
return defaultDisplayString_;
}
public void widgetDefaultSelected(SelectionEvent e) {
//Do nothing
}
public void widgetSelected(SelectionEvent e) {
//Do nothing
}
public void adapt(EObject eObject) {
if (eObject_ != null) {
eObject_.eAdapters().remove(this);
combo_.removeAll();
}
eObject_ = eObject;
if (eObject_ != null) {
eObject_.eAdapters().add(this);
Object object = eObject_.eGet(feature_);
if (object instanceof EList) {
for (Iterator it = ((EList) object).iterator(); it.hasNext();) {
Object item = it.next();
if (item instanceof EObject)
((EObject) item).eAdapters().add(this);
}
} else if (object instanceof EObject)
((EObject) object).eAdapters().add(this);
populateCombo();
}
}
public void dispose() {
if (eObject_ != null)
eObject_.eAdapters().remove(this);
if (combo_ != null && !combo_.isDisposed())
combo_.removeSelectionListener(this);
}
}
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