GeneralParticleNodeStructure.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.mappingsplugin.ui.schema;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.ListIterator;

import org.eclipse.persistence.tools.workbench.mappingsmodel.schema.MWElementDeclaration;
import org.eclipse.persistence.tools.workbench.mappingsmodel.schema.MWModelGroup;
import org.eclipse.persistence.tools.workbench.mappingsmodel.schema.MWParticle;
import org.eclipse.persistence.tools.workbench.mappingsmodel.schema.MWXmlSchema;
import org.eclipse.persistence.tools.workbench.mappingsmodel.schema.NullParticle;
import org.eclipse.persistence.tools.workbench.mappingsmodel.schema.Wildcard;
import org.eclipse.persistence.tools.workbench.uitools.Displayable;
import org.eclipse.persistence.tools.workbench.utility.CollectionTools;


final class GeneralParticleNodeStructure
    extends SchemaComponentNodeStructure
{
    private SpecificParticleNodeStructure specificParticleStructure;


    // **************** Constructors ******************************************

    GeneralParticleNodeStructure(MWParticle particle) {
        super(particle);
        this.specificParticleStructure = this.buildSpecificParticleStructure(particle);
    }


    // **************** Initialization ****************************************

    private SpecificParticleNodeStructure buildSpecificParticleStructure(MWParticle particle) {
        SpecificParticleNodeStructure specificParticleStructure;

        if (particle instanceof MWElementDeclaration) {
            specificParticleStructure = new ElementDeclarationNodeStructure((MWElementDeclaration) particle);
        }
        else if (particle instanceof MWModelGroup) {
            specificParticleStructure = new ModelGroupNodeStructure((MWModelGroup) particle);
        }
        else if (particle instanceof Wildcard) {
            specificParticleStructure = new WildcardNodeStructure((Wildcard) particle);
        }
        else if (particle instanceof NullParticle) {
            specificParticleStructure = new NullNodeStructure((NullParticle) particle);
        }
        else {
            throw new IllegalArgumentException("Unsupported particle type.");
        }

        specificParticleStructure.addPropertyChangeListener(Displayable.DISPLAY_STRING_PROPERTY, this.buildDisplayStringChangeListener());
        return specificParticleStructure;
    }

    private PropertyChangeListener buildDisplayStringChangeListener() {
        return new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent evt) {
                GeneralParticleNodeStructure.this.firePropertyChanged(DISPLAY_STRING_PROPERTY, evt.getOldValue(), evt.getNewValue());
            }
        };
    }


    // **************** SchemaComponentNodeStructure contract *****************

    void disengageComponent() {
        super.disengageComponent();
        this.specificParticleStructure.disengageParticle();
    }

    public String displayString() {
        return this.specificParticleStructure.displayString();
    }

    protected ListIterator componentDetails() {
        SchemaComponentDetail[] details = new SchemaComponentDetail[2];

        details[0] = this.buildMinOccursDetail();
        details[1] = this.buildMaxOccursDetail();

        return this.specificParticleStructure.details(CollectionTools.listIterator(details));
    }

    SchemaComponentDetail buildMinOccursDetail() {
        return new SchemaComponentDetail(this.getComponent()) {
            protected String getName() {
                return "minOccurs";
            }

            protected String getValueFromComponent() {
                return String.valueOf(((MWParticle) this.component).getMinOccurs());
            }
        };
    }

    SchemaComponentDetail buildMaxOccursDetail() {
        return new SchemaComponentDetail(this.getComponent()) {
            protected String getName() {
                return "maxOccurs";
            }

            protected String getValueFromComponent() {
                int maxOccurs = ((MWParticle) this.component).getMaxOccurs();
                return (maxOccurs == MWXmlSchema.INFINITY) ? "unbounded" : String.valueOf(maxOccurs);
            }
        };
    }
}