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/*****************************************************************************
* Copyright (c) 2011 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:
* Andreas Muelder - Initial contribution and API
* Fanch BONNABESSE (ALL4TEC) fanch.bonnabesse@all4tec.net - Bug 497289
*
*****************************************************************************/
package org.eclipse.papyrus.views.modelexplorer;
import java.util.List;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.transaction.util.TransactionUtil;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParser;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnViewer;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.papyrus.extensionpoints.editors.Activator;
import org.eclipse.papyrus.extensionpoints.editors.configuration.ICustomDirectEditorConfiguration;
import org.eclipse.papyrus.extensionpoints.editors.configuration.IDirectEditorConfiguration;
import org.eclipse.papyrus.extensionpoints.editors.utils.DirectEditorsUtil;
import org.eclipse.papyrus.extensionpoints.editors.utils.IDirectEditorsIds;
import org.eclipse.papyrus.infra.emf.gmf.command.GMFtoEMFCommandWrapper;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.swt.widgets.Composite;
/**
* Support for direct editors
*/
public class DirectEditorEditingSupport extends EditingSupport {
public DirectEditorEditingSupport(ColumnViewer viewer) {
super(viewer);
}
@Override
protected CellEditor getCellEditor(final Object element) {
ICustomDirectEditorConfiguration configuration = getConfigurationAE(element);
EObject semanticObject = EMFHelper.getEObject(element);
Composite parent = (Composite) getViewer().getControl();
configuration.preEditAction(semanticObject);
return configuration.createCellEditor(parent, semanticObject);
}
@Override
protected boolean canEdit(Object element) {
return getConfigurationAE(element) != null;
}
@Override
protected Object getValue(Object element) {
ICustomDirectEditorConfiguration configuration = getConfigurationAE(element);
Object semanticObject = EMFHelper.getEObject(element);
return configuration.createParser((EObject) semanticObject)
.getEditString(new EObjectAdapter((EObject) semanticObject), 0);
}
@Override
protected void setValue(Object element, Object value) {
ICustomDirectEditorConfiguration configuration = getConfigurationAE(element);
EObject semanticObject = EMFHelper.getEObject(element);
IParser parser = configuration.createParser(semanticObject);
ICommand command = parser.getParseCommand(new EObjectAdapter(
semanticObject), (String) value, 0);
TransactionalEditingDomain editingDomain = TransactionUtil
.getEditingDomain(semanticObject);
editingDomain.getCommandStack().execute(
new GMFtoEMFCommandWrapper(command));
}
/**
* Obtain direct editor configuration for an element that can be adapted to
* an EObject
*
* @param element
* an adaptable element
* @return The direct editor configuration, if it exists.
*/
public static ICustomDirectEditorConfiguration getConfigurationAE(final Object element) {
EObject semanticObject = EMFHelper.getEObject(element);
return getConfiguration(semanticObject);
}
/**
* Obtain direct editor configuration for a semantic element
*
* @param semanticElement
* a semantic element
* @return The direct editor configuration, if it exists.
*/
public static ICustomDirectEditorConfiguration getConfiguration(final EObject semanticElement) {
IPreferenceStore store = Activator.getDefault().getPreferenceStore();
if (null != semanticElement) {
EClass eClass = semanticElement.eClass();
String semanticClassName = eClass.getInstanceClassName();
String key = IDirectEditorsIds.EDITOR_FOR_ELEMENT + semanticClassName;
String languagePreferred = store.getString(key);
IDirectEditorConfiguration configuration = null;
if (null != languagePreferred && !languagePreferred.isEmpty()) {
configuration = DirectEditorsUtil.findEditorConfiguration(languagePreferred, semanticElement, semanticElement);
} else {
configuration = getConfigurationSuperType(eClass, semanticElement);
}
if (configuration instanceof ICustomDirectEditorConfiguration) {
return (ICustomDirectEditorConfiguration) configuration;
}
}
return null;
}
/**
* Obtain an editor configuration compatible with a superType of an EClass.
*
* @param basedEClass
* The based EClass.
* @param semanticElement
* The renamed semantic element.
* @return The editor configuration, if it exists.
*/
public static IDirectEditorConfiguration getConfigurationSuperType(final EClass basedEClass, final EObject semanticElement) {
IDirectEditorConfiguration configuration = null;
List<EClass> eClasses = basedEClass.getESuperTypes();
if (null != eClasses && !eClasses.isEmpty()) {
IPreferenceStore store = Activator.getDefault().getPreferenceStore();
int i = 0;
while (i < eClasses.size() && null == configuration) {
EClass eClass = eClasses.get(i);
String semanticClassName = eClass.getInstanceClassName();
String key = IDirectEditorsIds.EDITOR_FOR_ELEMENT + semanticClassName;
String languagePreferred = store.getString(key);
// If language has found, get the corresponding configuration.
if (languagePreferred != null && !languagePreferred.isEmpty()) {
configuration = DirectEditorsUtil.findEditorConfiguration(languagePreferred, semanticElement, semanticElement);
if (!configuration.isSuperType()) {
configuration = getConfigurationSuperType(eClass, semanticElement);
}
} else {
configuration = getConfigurationSuperType(eClass, semanticElement);
}
i++;
}
}
return configuration;
}
}
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