NamedSchemaComponentNodeStructure.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.MWNamedSchemaComponent;
import org.eclipse.persistence.tools.workbench.mappingsmodel.schema.MWNamespace;
import org.eclipse.persistence.tools.workbench.utility.iterators.SingleElementListIterator;


abstract class NamedSchemaComponentNodeStructure
    extends SchemaComponentNodeStructure
{
    /** cache the qName of the component */
    private String qName;

    /** cache the PCL */
    private PropertyChangeListener qNameListener;


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

    NamedSchemaComponentNodeStructure(MWNamedSchemaComponent component) {
        super(component);
        this.initialize(component);
    }


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

    private void initialize(MWNamedSchemaComponent component) {
        this.qName = component.qName();
        this.qNameListener = this.buildQNameListener();
        component.getTargetNamespace().addPropertyChangeListener(MWNamespace.NAMESPACE_PREFIX_PROPERTY, this.qNameListener);
    }

    private PropertyChangeListener buildQNameListener() {
        return new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent evt) {
                NamedSchemaComponentNodeStructure.this.qNameChanged();
            }
        };
    }


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

    void disengageComponent() {
        ((MWNamedSchemaComponent) this.getComponent()).getTargetNamespace().removePropertyChangeListener(MWNamespace.NAMESPACE_PREFIX_PROPERTY, this.qNameListener);
        super.disengageComponent();
    }


    // **************** Internal **********************************************

    private void qNameChanged() {
        String oldQName = this.qName;
        if (this.getComponent() != null) {
            this.qName = ((MWNamedSchemaComponent) this.getComponent()).qName();
            this.firePropertyChanged(DISPLAY_STRING_PROPERTY, oldQName, this.qName);
        }
    }


    protected ListIterator nameDetails() {
        return new SingleElementListIterator(this.buildNameDetail());
    }

    SchemaComponentDetail buildNameDetail() {
        return new SchemaComponentQNamedDetail(this.getComponent()) {
            protected String getName() {
                return "name";
            }

            protected MWNamedSchemaComponent getQNamedComponent() {
                return (MWNamedSchemaComponent) this.component;
            }
        };
    }


    // **************** NamedSchemaComponentNodeStructure contract ************

    abstract Integer topLevelOrderIndex();


    // **************** Displayable contract **********************************

    public String displayString() {
        MWNamedSchemaComponent namedComponent = (MWNamedSchemaComponent) this.getComponent();
        String designator = (namedComponent.isReference()) ? "ref" : "name";
        return namedComponent.componentTypeName() + ": " + designator + "=\"" + namedComponent.qName() + "\"";
    }
}