FieldTransformerAssociationEditingDialog.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.mapping;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import org.eclipse.persistence.tools.workbench.framework.context.WorkbenchContext;
import org.eclipse.persistence.tools.workbench.framework.ui.dialog.AbstractValidatingDialog;
import org.eclipse.persistence.tools.workbench.mappingsmodel.mapping.MWFieldTransformerAssociation;
import org.eclipse.persistence.tools.workbench.mappingsplugin.ui.mapping.FieldTransformerAssociationEditingPanel.FieldTransformerAssociationSpec;
import org.eclipse.persistence.tools.workbench.mappingsplugin.ui.mapping.TransformerEditingPanel.TransformerSpec;
import org.eclipse.persistence.tools.workbench.uitools.app.ValueModel;


public abstract class FieldTransformerAssociationEditingDialog
    extends AbstractValidatingDialog
{
    // **************** Variables *********************************************

    protected FieldTransformerAssociationEditor associationEditor;

    protected PropertyChangeListener validatingListener;

    private boolean noError = true;


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

    protected FieldTransformerAssociationEditingDialog(
        FieldTransformerAssociationEditor associationEditor,
        WorkbenchContext context
    ) {
        super(context);
        this.initialize(associationEditor);
    }


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

    protected void initialize() {
        super.initialize();
        this.setTitle(this.resourceRepository().getString("FIELD_TRANSFORMER_ASSOCIATION_EDITING_DIALOG.TITLE"));
        this.getOKAction().setEnabled(false);
    }

    protected void initialize(FieldTransformerAssociationEditor associationEditor) {
        this.associationEditor = associationEditor;
        this.validatingListener = this.buildValidatingListener();
        this.transformerSpec().transformationMethodHolder().addPropertyChangeListener(ValueModel.VALUE, this.validatingListener);
        this.transformerSpec().transformerClassHolder().addPropertyChangeListener(ValueModel.VALUE, this.validatingListener);
        // doing this last so that the other holders engage their held value holders first
        this.transformerSpec().transformerTypeHolder().addPropertyChangeListener(ValueModel.VALUE, this.validatingListener);
    }

    private PropertyChangeListener buildValidatingListener() {
        return new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent evt) {
                FieldTransformerAssociationEditingDialog.this.updateMessage();
                FieldTransformerAssociationEditingDialog.this.updateOKAction();
            }
        };
    }

    protected void updateMessage() {
        if (this.transformerSpec().transformerType() == TransformerSpec.NULL_TRANSFORMER) {
            this.setErrorMessageKey("FIELD_TRANSFORMER_ASSOCIATION_EDITING_DIALOG.NULL_TRANSFORMER_ERROR");
        }
        else if (
            this.transformerSpec().transformerType() == TransformerSpec.TRANSFORMER_CLASS
            && this.transformerSpec().transformerClass() == null
        ) {
            this.setErrorMessageKey("FIELD_TRANSFORMER_ASSOCIATION_EDITING_DIALOG.NULL_TRANSFORMER_CLASS_ERROR");
        }
        else if (
            this.transformerSpec().transformerType() == TransformerSpec.TRANSFORMATION_METHOD
            && this.transformerSpec().transformationMethod() == null
        ) {
            this.setErrorMessageKey("FIELD_TRANSFORMER_ASSOCIATION_EDITING_DIALOG.NULL_TRANSFORMATION_METHOD_ERROR");
        }
        else {
            this.clearErrorMessage();
        }

        if (
            this.transformerSpec().transformerType() == TransformerSpec.TRANSFORMATION_METHOD
            && this.transformerSpec().transformationMethod() != null
            && ! this.transformerSpec().transformationMethodIsValid()
        ) {
            this.setWarningMessageKey("FIELD_TRANSFORMER_ASSOCIATION_EDITING_DIALOG.INVALID_TRANSFORMATION_METHOD_WARNING");
        }
        else {
            this.clearWarningMessage();
        }
    }

    /** Overridden to set error flag */
    protected void setErrorMessage(String message) {
        super.setErrorMessage(message);
        this.noError = (message == null);
    }

    /** Overridden to clear error flag */
    protected void clearErrorMessage() {
        super.clearErrorMessage();
        this.noError = true;
    }

    private void updateOKAction() {
        this.getOKAction().setEnabled(this.noError);
    }

    protected String helpTopicId() {
        return "dialog.editFieldTransformerAssociation";
    }


    // **************** Convenience *******************************************

    private TransformerEditingPanel.TransformerSpec transformerSpec() {
        return this.associationEditor.transformerSpec();
    }


    // **************** Member classes ****************************************

    public static interface FieldTransformerAssociationEditor
        extends FieldTransformerAssociationSpec
    {
        void commit();
    }


    public static abstract class AbstractFieldTransformerAssociationEditor
        implements FieldTransformerAssociationEditor
    {
        // **************** Variables *****************************************

        protected MWFieldTransformerAssociation association;

        private TransformerEditingDialog.FieldTransformerEditor transformerEditor;


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

        protected AbstractFieldTransformerAssociationEditor(MWFieldTransformerAssociation association) {
            super();
            this.association = association;
            this.transformerEditor = new TransformerEditingDialog.FieldTransformerEditor(association);
        }


        // **************** FieldTransformerAssociationSpec impl **************

        public TransformerSpec transformerSpec() {
            return this.transformerEditor;
        }


        // **************** Editing *******************************************

        public void commit() {
            this.transformerEditor.commit();
        }
    }
}