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/*****************************************************************************
* Copyright (c) 2013 CEA LIST.
*
*
* 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:
* Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.nattable.views.config.manager.axis;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.command.UnexecutableCommand;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.papyrus.infra.core.sashwindows.di.DiPackage;
import org.eclipse.papyrus.infra.core.sashwindows.di.PageList;
import org.eclipse.papyrus.infra.core.sashwindows.di.PageRef;
import org.eclipse.papyrus.infra.emf.nattable.manager.axis.AbstractSynchronizedOnEStructuralFeatureAxisManager;
import org.eclipse.papyrus.infra.nattable.views.config.utils.Utils;
/**
*
* @author Vincent Lorenzo
*
*/
public class EditorContextSynchronizerAxisManager extends AbstractSynchronizedOnEStructuralFeatureAxisManager {
/**
* we keep it to be able to remove the listener during the destruction of the table
*/
private PageList pageList;
/**
*
* @see org.eclipse.papyrus.infra.emf.nattable.manager.axis.AbstractSynchronizedOnEStructuralFeatureAxisManager#addContextFeatureValueListener()
*
*/
@Override
protected void addContextFeatureValueListener() {
this.featureListener = new AdapterImpl() {
@Override
public void notifyChanged(final Notification msg) {
if(msg.getFeature() == DiPackage.eINSTANCE.getPageList_AvailablePage()) {
featureValueHasChanged(msg);
}
}
};
getPageList().eAdapters().add(this.featureListener);
}
private PageList getPageList() {
if(this.pageList == null) {
this.pageList = Utils.getPageList(getTableManager().getTable());
}
return this.pageList;
}
/**
*
* @see org.eclipse.papyrus.infra.emf.nattable.manager.axis.AbstractSynchronizedOnEStructuralFeatureAxisManager#getFeaturesValue()
*
* @return
*/
@Override
protected List<Object> getFeaturesValue() {
final List<Object> pages = new ArrayList<Object>();
for(final PageRef current : getPageList().getAvailablePage()) {
final Object pageIdentifier = current.getPageIdentifier();
if(pageIdentifier != null) {
pages.add(pageIdentifier);
}
}
return pages;
}
/**
*
* @see org.eclipse.papyrus.infra.emf.nattable.manager.axis.AbstractSynchronizedOnEStructuralFeatureAxisManager#verifyValues()
*
*/
@Override
protected void verifyValues() {
//nothing to do
}
/**
*
* @see org.eclipse.papyrus.infra.nattable.manager.axis.AbstractAxisManager#isAllowedContents(java.lang.Object)
*
* @param object
* @return
*/
@Override
public boolean isAllowedContents(Object object) {
if(object instanceof PageRef) {
return mustBeDisplayedInThisTable(((PageRef)object).getPageIdentifier());
}
return mustBeDisplayedInThisTable(object);
}
/**
*
* @param page
* a page
* @return
* <code>true</code> if the page is referenced by a child of the context of the table or by the context itself
*/
private boolean mustBeDisplayedInThisTable(final Object page) {
final Object value = Utils.getEditorContext(page);
if(value instanceof EObject) {
final EObject tableContext = getTableContext();
EObject container = (EObject)value;
while(container != null) {
if(container == tableContext) {
return true;
}
container = container.eContainer();
}
}
return false;
}
/**
*
* @see org.eclipse.papyrus.infra.nattable.manager.axis.AbstractAxisManager#dispose()
*
*/
@Override
public void dispose() {
if(getPageList() != null) {
getPageList().eAdapters().remove(this.featureListener);
}
this.pageList = null;
super.dispose();
}
/**
*
* @see org.eclipse.papyrus.infra.nattable.manager.axis.IAxisManager#canEditAxisHeader()
*
* @return
*/
@Override
public boolean canEditAxisHeader() {
return false;
}
/**
*
* @see org.eclipse.papyrus.infra.nattable.manager.axis.IAxisManager#canDestroyAxisElement(java.lang.Integer)
*
* @param axisPosition
* @return
*/
@Override
public boolean canDestroyAxisElement(Integer axisPosition) {
return false;
}
/**
*
* @see org.eclipse.papyrus.infra.nattable.manager.axis.IAxisManager#getDestroyAxisElementCommand(TransactionalEditingDomain, java.lang.Integer)
*
* @param domain
* @param axisPosition
* @return
*/
@Override
public Command getDestroyAxisElementCommand(TransactionalEditingDomain domain, Integer axisPosition) {
return UnexecutableCommand.INSTANCE;
}
/**
*
* @param notification
* update the list of the managed objects if its required
*/
@Override
protected void featureValueHasChanged(final Notification notification) {
if(notification.isTouch()) {
return;
}
int eventType = notification.getEventType();
List<Object> toAdd = new ArrayList<Object>();
List<Object> toRemove = new ArrayList<Object>();
switch(eventType) {
case Notification.REMOVING_ADAPTER:
break;//nothing to do
case Notification.ADD:
Object newValue = notification.getNewValue();
if(newValue instanceof PageRef) {
newValue = ((PageRef)newValue).getPageIdentifier();
}
if(isAllowedContents(newValue)) {
toAdd.add(newValue);
}
break;
case Notification.ADD_MANY:
Collection<?> newValues = (Collection<?>)notification.getNewValue();
for(Object current : newValues) {
if(current instanceof PageRef) {
current = ((PageRef)current).getPageIdentifier();
}
if(isAllowedContents(current)) {
toAdd.add(current);
}
}
break;
case Notification.EVENT_TYPE_COUNT:
break;
case Notification.MOVE:
//we ignore it
break;
case Notification.REMOVE:
Object oldValue = notification.getOldValue();
if(oldValue instanceof PageRef) {
newValue = ((PageRef)oldValue).getPageIdentifier();
}
if(this.managedObject.contains(oldValue)) {
toRemove.add(oldValue);
}
break;
case Notification.REMOVE_MANY:
Collection<?> oldValues = (Collection<?>)notification.getOldValue();
for(Object current : oldValues) {
if(current instanceof PageRef) {
newValue = ((PageRef)current).getPageIdentifier();
}
if(this.managedObject.contains(oldValues)) {
toRemove.add(current);
}
}
break;
case Notification.RESOLVE:
case Notification.SET:
case Notification.UNSET:
//case Notification.NO_FEATURE_ID:
//case Notification.NO_INDEX:
default:
break;
}
if(toAdd.size() > 0 || toRemove.size() > 0) {
updateManagedList(toAdd, toRemove);
}
}
}
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