/******************************************************************************
 * Copyright (c) 2006, Intalio Inc.
 * 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:
 *     Intalio Inc. - initial API and implementation
 *******************************************************************************/

package org.eclipse.stp.bpmn.diagram.providers;

import java.text.FieldPosition;
import java.text.MessageFormat;
import java.util.Collections;

import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
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.core.command.UnexecutableCommand;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParserEditStatus;
import org.eclipse.gmf.runtime.common.ui.services.parser.ParserEditStatus;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.stp.bpmn.diagram.part.BpmnDiagramEditorPlugin;

/**
 * @generated
 */
public class BpmnStructuralFeatureParser extends BpmnAbstractParser {

    /**
     * @generated
     */
    private static final MessageFormat DEFAULT_PROCESSOR = new MessageFormat(
            "{0}"); //$NON-NLS-1$

    /**
     * @generated
     */
    private EStructuralFeature feature;

    /**
     * @generated
     */
    public BpmnStructuralFeatureParser(EStructuralFeature feature) {
        this.feature = feature;
    }

    /**
     * @generated
     */
    protected MessageFormat getViewProcessor() {
        MessageFormat processor = super.getViewProcessor();
        return processor == null ? DEFAULT_PROCESSOR : processor;
    }

    /**
     * @generated
     */
    protected MessageFormat getEditProcessor() {
        MessageFormat processor = super.getEditProcessor();
        return processor == null ? DEFAULT_PROCESSOR : processor;
    }

    /**
     * @generated
     */
    protected String getStringByPattern(IAdaptable adapter, int flags,
            String pattern, MessageFormat processor) {
        EObject element = (EObject) adapter.getAdapter(EObject.class);
        Object value = element.eGet(feature);
        value = getValidValue(feature, value);
        return processor.format(new Object[] { value }, new StringBuffer(),
                new FieldPosition(0)).toString();
    }

    /**
     * @generated
     */
    protected IParserEditStatus validateValues(Object[] values) {
        if (values.length > 1) {
            return ParserEditStatus.UNEDITABLE_STATUS;
        }
        Object value = values.length == 1 ? values[0] : null;
        value = getValidNewValue(feature, value);
        if (value instanceof InvalidValue) {
            return new ParserEditStatus(BpmnDiagramEditorPlugin.ID,
                    IParserEditStatus.UNEDITABLE, value.toString());
        }
        return ParserEditStatus.EDITABLE_STATUS;
    }

    /**
     * @generated
     */
    public ICommand getParseCommand(IAdaptable adapter, Object[] values) {
        EObject element = (EObject) adapter.getAdapter(EObject.class);
        if (element == null) {
            return UnexecutableCommand.INSTANCE;
        }
        TransactionalEditingDomain editingDomain = TransactionUtil
                .getEditingDomain(element);
        if (editingDomain == null) {
            return UnexecutableCommand.INSTANCE;
        }
        Object value = values.length == 1 ? values[0] : null;
        ICommand command = getModificationCommand(element, feature, value);
        return new CompositeTransactionalCommand(editingDomain, command
                .getLabel(), Collections.singletonList(command));
    }

    /**
     * @generated
     */
    public boolean isAffectingEvent(Object event, int flags) {
        if (event instanceof Notification) {
            if (feature == ((Notification) event).getFeature()) {
                return true;
            }
        }
        return false;
    }
}
