/*******************************************************************************
 * Copyright (c) 2008, 2015 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0, which accompanies this distribution
 * and is available at https://www.eclipse.org/legal/epl-2.0/.
 *
 * Contributors:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.jpa.eclipselink.core.internal.context.java;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jpt.common.core.resource.java.JavaResourceType;
import org.eclipse.jpt.common.core.utility.TextRange;
import org.eclipse.jpt.common.utility.internal.ObjectTools;
import org.eclipse.jpt.jpa.core.context.java.JavaPersistentType;
import org.eclipse.jpt.jpa.core.internal.context.java.AbstractJavaContextModel;
import org.eclipse.jpt.jpa.eclipselink.core.context.EclipseLinkReadOnly;
import org.eclipse.jpt.jpa.eclipselink.core.context.java.EclipseLinkJavaNonEmbeddableTypeMapping;
import org.eclipse.jpt.jpa.eclipselink.core.resource.java.ReadOnlyAnnotation;

public class EclipseLinkJavaReadOnly
	extends AbstractJavaContextModel<EclipseLinkJavaNonEmbeddableTypeMapping>
	implements EclipseLinkReadOnly
{
	protected Boolean specifiedReadOnly;  // TRUE or null


	public EclipseLinkJavaReadOnly(EclipseLinkJavaNonEmbeddableTypeMapping parent) {
		super(parent);
		this.specifiedReadOnly = this.buildSpecifiedReadOnly();
	}


	// ********** synchronize/update **********

	@Override
	public void synchronizeWithResourceModel(IProgressMonitor monitor) {
		super.synchronizeWithResourceModel(monitor);
		this.setSpecifiedReadOnly_(this.buildSpecifiedReadOnly());
	}


	// ********** read-only **********

	public boolean isReadOnly() {
		return (this.specifiedReadOnly != null) ? this.specifiedReadOnly.booleanValue() : this.isDefaultReadOnly();
	}

	public Boolean getSpecifiedReadOnly() {
		return this.specifiedReadOnly;
	}

	public void setSpecifiedReadOnly(Boolean readOnly) {
		readOnly = (readOnly == null) ? null : readOnly.booleanValue() ? readOnly : null;
		if (ObjectTools.notEquals(readOnly, this.specifiedReadOnly)) {
			ReadOnlyAnnotation annotation = this.getReadOnlyAnnotation();
			if (readOnly != null) {
				if (annotation == null) {
					this.addReadOnlyAnnotation();
				}
			} else {
				if (annotation != null) {
					this.removeReadOnlyAnnotation();
				}
			}

			this.setSpecifiedReadOnly_(readOnly);
		}
	}

	protected void setSpecifiedReadOnly_(Boolean readOnly) {
		Boolean old = this.specifiedReadOnly;
		this.specifiedReadOnly = readOnly;
		this.firePropertyChanged(SPECIFIED_READ_ONLY_PROPERTY, old, readOnly);
	}

	private Boolean buildSpecifiedReadOnly() {
		return (this.getReadOnlyAnnotation() == null) ? null : Boolean.TRUE;
	}

	public boolean isDefaultReadOnly() {
		return DEFAULT_READ_ONLY;
	}


	// ********** read-only annotation **********

	protected ReadOnlyAnnotation getReadOnlyAnnotation() {
		return (ReadOnlyAnnotation) this.getJavaResourceType().getAnnotation(this.getReadOnlyAnnotationName());
	}

	protected void addReadOnlyAnnotation() {
		this.getJavaResourceType().addAnnotation(this.getReadOnlyAnnotationName());
	}

	protected void removeReadOnlyAnnotation() {
		this.getJavaResourceType().removeAnnotation(this.getReadOnlyAnnotationName());
	}

	protected String getReadOnlyAnnotationName() {
		return ReadOnlyAnnotation.ANNOTATION_NAME;
	}


	// ********** misc **********


	protected EclipseLinkJavaNonEmbeddableTypeMapping getTypeMapping() {
		return this.parent;
	}

	protected JavaPersistentType getPersistentType() {
		return this.getTypeMapping().getPersistentType();
	}

	protected JavaResourceType getJavaResourceType() {
		return this.getTypeMapping().getJavaResourceType();
	}


	// ********** validation **********

	public TextRange getValidationTextRange() {
		TextRange textRange = this.getAnnotationTextRange();
		return (textRange != null) ? textRange : this.getTypeMapping().getValidationTextRange();
	}

	protected TextRange getAnnotationTextRange() {
		ReadOnlyAnnotation annotation = this.getReadOnlyAnnotation();
		return (annotation == null) ? null : annotation.getTextRange();
	}
}