/*

  * Copyright 2005-2008 The Kuali Foundation

  *

  *

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  * http://www.opensource.org/licenses/ecl2.php

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.rice.core.api.style;

 import java.io.Serializable;

 import java.util.Collection;

 import javax.xml.bind.annotation.XmlAccessType;

 import javax.xml.bind.annotation.XmlAccessorType;

 import javax.xml.bind.annotation.XmlAnyElement;

 import javax.xml.bind.annotation.XmlElement;

 import javax.xml.bind.annotation.XmlRootElement;

 import javax.xml.bind.annotation.XmlType;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.core.api.CoreConstants;

 import org.kuali.rice.core.api.mo.AbstractDataTransferObject;

 import org.kuali.rice.core.api.mo.ModelBuilder;

 import org.w3c.dom.Element;

 /**

  * An immutable representation of a Style.  A style is essentially a block of

  * XML containing and XSL stylesheet. These can be used in various places for

  * the transformation of XML data from one form to another.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  *

  */

 @XmlRootElement(name = Style.Constants.ROOT_ELEMENT_NAME)

 @XmlAccessorType(XmlAccessType.NONE)

 @XmlType(name = Style.Constants.TYPE_NAME, propOrder = {

                 Style.Elements.STYLE_ID,

                 Style.Elements.NAME,

                 Style.Elements.XML_CONTENT,

                 Style.Elements.ACTIVE,

         CoreConstants.CommonElements.VERSION_NUMBER,

         CoreConstants.CommonElements.OBJECT_ID,

         CoreConstants.CommonElements.FUTURE_ELEMENTS

 })

 public final class Style extends AbstractDataTransferObject implements StyleContract {

         private static final long serialVersionUID = -26426318682076660L;

         @XmlElement(name = Elements.STYLE_ID, required = false)

         private final Long styleId;

         @XmlElement(name = Elements.NAME, required = true)

     private final String name;

         @XmlElement(name = Elements.XML_CONTENT, required = false)

     private final String xmlContent;

         @XmlElement(name = Elements.ACTIVE, required = true)

     private final boolean active;

         @XmlElement(name = CoreConstants.CommonElements.VERSION_NUMBER, required = false)

     private final Long versionNumber;

         @XmlElement(name = CoreConstants.CommonElements.OBJECT_ID, required = false)

         private final String objectId;

     @SuppressWarnings("unused")

     @XmlAnyElement

     private final Collection<Element> _futureElements = null;

     /**

      * Private constructor used only by JAXB.

      */

     private Style() {

             this.styleId = null;

             this.name = null;

             this.xmlContent = null;

             this.active = false;

             this.versionNumber = null;

             this.objectId = null;

     }

     private Style(Builder builder) {

             this.styleId = builder.getStyleId();

             this.name = builder.getName();

             this.xmlContent = builder.getXmlContent();

             this.active = builder.isActive();

             this.versionNumber = builder.getVersionNumber();

             this.objectId = builder.getObjectId();

     }

     @Override

     public Long getStyleId() {

                 return this.styleId;

         }

     @Override

     public String getName() {

                 return this.name;

         }

     @Override

     public String getXmlContent() {

                 return this.xmlContent;

         }

     @Override

     public boolean isActive() {

                 return this.active;

         }

         @Override

         public Long getVersionNumber() {

                 return this.versionNumber;

         }

         @Override

         public String getObjectId() {

                 return this.objectId;

         }

         /**

          * A builder which can be used to construct {@link Style} instances.

          * Enforces the constraints of the {@link StyleContract}.

          * 

          * @author Kuali Rice Team (rice.collab@kuali.org)

          *

          */

         public static final class Builder implements StyleContract, ModelBuilder, Serializable  {

             private static final long serialVersionUID = -219369603932108436L;

                 private Long styleId;

         private String name;

         private String xmlContent;

         private boolean active;

         private Long versionNumber;

         private String objectId;

         private Builder(String name) {

                 setName(name);

                 setActive(true);

         }

         /**

          * Creates a style builder with the given required values.  The builder

          * is the only means by which a {@link Style} object should be created.

          * 

          * <p>Will default the active flag to true.

          * 

          * @param name the name of the style to create, must not be null or blank

          * 

          * @return a builder with the required values already initialized

          * 

          * @throws IllegalArgumentException if the given name is null or blank

          */

         public static Builder create(String name) {

                 return new Builder(name);

         }

         /**

          * Creates a populates a builder with the data on the given StyleContract.

          * This is similar in nature to a "copy constructor" for Style.

          * 

          * @param contract an object implementing the StyleContract from which

          * to copy property values

          *  

          * @return a builder with the values from the contract already initialized

          * 

          * @throws IllegalArgumentException if the given contract is null

          */

         public static Builder create(StyleContract contract) {

                 if (contract == null) {

                         throw new IllegalArgumentException("contract was null");

                 }

                 Builder builder = create(contract.getName());

                 builder.setStyleId(contract.getStyleId());

                 builder.setXmlContent(contract.getXmlContent());

                 builder.setActive(contract.isActive());

                 builder.setVersionNumber(contract.getVersionNumber());

                 builder.setObjectId(contract.getObjectId());

                 return builder;

         }

         @Override

         public Style build() {

                 return new Style(this);

         }

         @Override

                 public Long getStyleId() {

                         return this.styleId;

                 }

         /**

          * Sets the styleId for the style that will be returned by this builder.

          * 

          * @param styleId the styleId to set

          */

                 public void setStyleId(Long styleId) {

                         this.styleId = styleId;

                 }

                 @Override

                 public String getName() {

                         return this.name;

                 }

                 /**

          * Sets the name for the style that will be returned by this builder.

          * The name must not be blank or null.

          * 

          * @param name the name to set on this builder, must not be null or

          * blank

          * 

          * @throws IllegalArgumentException if the given name is null or blank

          */

                 public void setName(String name) {

                         if (StringUtils.isBlank(name)) {

                                 throw new IllegalArgumentException("name is blank");

                         }

                         this.name = name;

                 }

                 @Override

                 public String getXmlContent() {

                         return this.xmlContent;

                 }

                 /**

                  * Sets the XML content for the style that will be returned by this

                  * builder.

                  * 

                  * @param xmlContent the xmlContent to set on this builder

                  */

                 public void setXmlContent(String xmlContent) {

                         this.xmlContent = xmlContent;

                 }

                 @Override

                 public boolean isActive() {

                         return this.active;

                 }

                 /**

          * Sets the active flag for the style that will be returned by this

          * builder.

          * 

          * @param active the active flag to set

          */

                 public void setActive(boolean active) {

                         this.active = active;

                 }

                 @Override

                 public Long getVersionNumber() {

                         return this.versionNumber;

                 }

                 /**

          * Sets the version number for the style that will be returned by this

          * builder.

          * 

          * <p>In general, this value should not be manually set on the builder,

          * but rather copied from an existing {@link StyleContract} when

          * invoking {@link Builder#create(StyleContract)}.

          * 

          * @param versionNumber the version number to set

          */

                 public void setVersionNumber(Long versionNumber) {

                         this.versionNumber = versionNumber;

                 }

                 @Override

                 public String getObjectId() {

                         return objectId;

                 }

                 /**

          * Sets the globally unique object ID for the style that will be

          * returned by this builder.

          * 

          * <p>In general, this value should not be manually set on the builder,

          * but rather copied from an existing {@link StyleContract} when

          * invoking {@link Builder#create(StyleContract)}.

          * 

          * @param objectId the object ID to set

          */

                 public void setObjectId(String objectId) {

                         this.objectId = objectId;

                 }

     }

     /**

      * Defines some internal constants used on this class.

      */

     static class Constants {

         final static String ROOT_ELEMENT_NAME = "style";

         final static String TYPE_NAME = "StyleType";

     }

     /**

      * A private class which exposes constants which define the XML element names to use

      * when this object is marshalled to XML.

      */

     static class Elements {

         final static String STYLE_ID = "styleId";

         final static String NAME = "name";

         final static String XML_CONTENT = "xmlContent";

         final static String ACTIVE = "active";

     }

 }