/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.jsf.model.handlers.bean;
import java.util.ArrayList;
import org.eclipse.core.runtime.*;
import org.eclipse.jdt.core.IField;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.ltk.core.refactoring.*;
import org.eclipse.ltk.core.refactoring.participants.*;
import org.jboss.tools.common.model.*;
import org.jboss.tools.jsf.messages.JSFUIMessages;
import org.jboss.tools.common.model.refactoring.RenameModelObjectChange;
import org.jboss.tools.common.model.refactoring.RenameProcessorRunner;
import org.jboss.tools.common.util.BeanUtil;
public class JSFRenameFieldParticipant extends RenameParticipant implements ISharableParticipant {
public static final String PARTICIPANT_NAME="jsf-RenameFieldParticipant"; //$NON-NLS-1$
private IField field;
private IMethod method;
private XModelObject object;
public JSFRenameFieldParticipant() {}
protected boolean initialize(Object element) {
if (element instanceof IField) {
field = (IField)element;
} else if(element instanceof XModelObject) {
this.object = (XModelObject)element;
} else if(element instanceof IMethod) {
method = (IMethod)element;
}
return field != null || object != null || method != null;
}
public void addElement(Object element, RefactoringArguments arguments) {
// TODO Auto-generated method stub
}
public String getName() {
return PARTICIPANT_NAME;
}
public RefactoringStatus checkConditions(IProgressMonitor pm,
CheckConditionsContext context) throws OperationCanceledException {
return null;
}
public Change createChange(IProgressMonitor pm) throws CoreException,
OperationCanceledException {
if (!pm.isCanceled()) {
if(!updateReferences() && object == null) return null;
String newName = getArguments().getNewName();
if (field != null) {
JSFRenameFieldChange c2 = new JSFRenameFieldChange(field, newName);
XModel model = c2.getModel();
if(c2.getChildren() == null || c2.getChildren().length == 0 || !updateReferences()) c2 = null;
XModelObject[] os = JSFRenameFieldHelper.getBeanList(model, field);
os = getProperties(os, field.getElementName());
RenameModelObjectChange c1 = RenameModelObjectChange.createChange(os, newName, "property-name"); //$NON-NLS-1$
c2 = null;
if(c1 == null) return c2;
if(c2 == null) return c1;
CompositeChange change = new CompositeChange(JSFUIMessages.REFERENCES);
if(c1 != null) change.add(c1);
if(c2 != null) change.add(c2);
return change;
} else if(method != null) {
XModel model = JSFRenameFieldChange.getModel(method);
if(model == null) return null;
XModelObject[] os = JSFRenameFieldHelper.getBeanList(model, method);
String propertyName = BeanUtil.getPropertyName(method.getElementName());
if(propertyName == null) return null;
String newPropertyName = BeanUtil.getPropertyName(newName);
os = getProperties(os, propertyName);
RenameModelObjectChange c1 = RenameModelObjectChange.createChange(os, newPropertyName, "property-name"); //$NON-NLS-1$
return c1;
} else if(object != null) {
RenameModelObjectChange c1 = RenameModelObjectChange.createChange(new XModelObject[]{object}, getArguments().getNewName(), "property-name"); //$NON-NLS-1$
JSFRenameFieldChange c2 = null;
if(updateReferences()) {
c2 = new JSFRenameFieldChange(object, getArguments().getNewName());
if(c2.getChildren() == null || c2.getChildren().length == 0) c2 = null;
}
if(c1 == null) return c2;
if(c2 == null) return c1;
CompositeChange change = new CompositeChange(JSFUIMessages.REFERENCES);
change.add(c1);
change.add(c2);
return change;
}
}
return null;
}
private XModelObject[] getProperties(XModelObject[] beans, String name) {
if(beans == null) return null;
ArrayList<XModelObject> list = new ArrayList<XModelObject>();
for (int i = 0; i < beans.length; i++) {
XModelObject o = beans[i].getChildByPath(name);
if(o != null) list.add(o);
}
return list.toArray(new XModelObject[0]);
}
protected boolean updateReferences() {
return RenameProcessorRunner.updateReferences(getProcessor());
}
}