/**
    * Copyright 2005-2016 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.krad.uif.view;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.CoreApiServiceLocator;
  import org.kuali.rice.core.api.util.RiceKeyConstants;
  import org.kuali.rice.kew.api.KewApiServiceLocator;
  import org.kuali.rice.kew.api.doctype.DocumentType;
  import org.kuali.rice.krad.bo.Note;
  import org.kuali.rice.krad.datadictionary.DocumentEntry;
  import org.kuali.rice.krad.datadictionary.parse.BeanTag;
  import org.kuali.rice.krad.datadictionary.parse.BeanTagAttribute;
  import org.kuali.rice.krad.document.Document;
  import org.kuali.rice.krad.document.DocumentRequestAuthorizationCache;
  import org.kuali.rice.krad.document.DocumentViewAuthorizerBase;
  import org.kuali.rice.krad.document.DocumentViewPresentationControllerBase;
  import org.kuali.rice.krad.keyvalues.KeyValuesFinder;
  import org.kuali.rice.krad.service.KRADServiceLocatorWeb;
  import org.kuali.rice.krad.uif.UifConstants;
  import org.kuali.rice.krad.uif.util.LifecycleElement;
  import org.kuali.rice.krad.util.KRADConstants;
  
  /**
   * View type for KRAD documents.
   *
   * <p>
   * Provides commons configuration and default behavior applicable to documents
   * in the KRAD module.
   * </p>
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  @BeanTag(name = "documentView", parent = "Uif-DocumentView")
  public class DocumentView extends FormView {
  	private static final long serialVersionUID = 2251983409572774175L;
  
  	private Class<? extends Document> documentClass;
  
  	private boolean allowsNoteAttachments = true;
  	private boolean allowsNoteFYI = false;
  	private boolean displayTopicFieldInNotes = false;
      private boolean superUserView = false;
  
      private Class<? extends KeyValuesFinder> attachmentTypesValuesFinderClass;
  
  	public DocumentView() {
  		super();
  
          setRequestAuthorizationCacheClass(DocumentRequestAuthorizationCache.class);
  	}
  
      /**
       * The following initialization is performed:
       *
       * <ul>
       * <li>Retrieve the document entry</li>
       * <li>Makes sure that the header is set.</li>
       * <li>Set up the document view authorizer and presentation controller</li>
       * </ul>
       *
       * {@inheritDoc}
       */
      @Override
      public void performInitialization(Object model) {
          super.performInitialization(model);
  
          // get document entry
          DocumentEntry documentEntry = getDocumentEntryForView();
          pushObjectToContext(UifConstants.ContextVariableNames.DOCUMENT_ENTRY, documentEntry);
  
          // default document type on the header
          String documentTypeName = documentEntry.getDocumentTypeName();
          DocumentType documentType = KewApiServiceLocator.getDocumentTypeService().getDocumentTypeByName(documentTypeName);
  
          if (getHeader() != null && StringUtils.isBlank(getHeaderText())) {
              setHeaderText(documentType.getLabel());
          }
  
          // setup authorizer and presentation controller using the configured authorizer and pc for document
          if (getAuthorizer() == null) {
              setAuthorizer(new DocumentViewAuthorizerBase());
          }
  
          if (getAuthorizer() instanceof DocumentViewAuthorizerBase) {
              DocumentViewAuthorizerBase documentViewAuthorizerBase = (DocumentViewAuthorizerBase) getAuthorizer();
             if (documentViewAuthorizerBase.getDocumentAuthorizer() == null) {
                 documentViewAuthorizerBase.setDocumentAuthorizerClass(documentEntry.getDocumentAuthorizerClass());
             }
         }
 
         if (getPresentationController() == null) {
             setPresentationController(new DocumentViewPresentationControllerBase());
         }
 
         if (getPresentationController() instanceof DocumentViewPresentationControllerBase) {
             DocumentViewPresentationControllerBase documentViewPresentationControllerBase =
                     (DocumentViewPresentationControllerBase) getPresentationController();
             if (documentViewPresentationControllerBase.getDocumentPresentationController() == null) {
                 documentViewPresentationControllerBase.setDocumentPresentationControllerClass(
                         documentEntry.getDocumentPresentationControllerClass());
             }
         }
 
         getObjectPathToConcreteClassMapping().put(getDefaultBindingObjectPath(), getDocumentClass());
     }
 
     /**
      * Retrieves the associated {@link DocumentEntry} for the document view
      *
      * @return DocumentEntry entry (exception thrown if one is not found)
      */
     protected DocumentEntry getDocumentEntryForView() {
         DocumentEntry documentEntry = KRADServiceLocatorWeb.getDocumentDictionaryService().getDocumentEntryByClass(
                 getDocumentClass());
 
         if (documentEntry == null) {
             throw new RuntimeException(
                     "Unable to find document entry for document class: " + getDocumentClass().getName());
         }
 
         return documentEntry;
     }
 
     /**
      * Returns the maximum allowed length for explanation notes within the document
      *
      * <p>
      *     The max length for the explanation data is calculated as the difference between the max length of
      *     the entire note and the length of the introduction message plus a whitespace.
      * </p>
      *
      * @return int
      */
     @BeanTagAttribute(name = "explanationDataMaxLength")
     public int getExplanationDataMaxLength() {
         return KRADServiceLocatorWeb.getDataDictionaryService().getAttributeMaxLength(Note.class,
                 KRADConstants.NOTE_TEXT_PROPERTY_NAME) -
                 (CoreApiServiceLocator.getKualiConfigurationService().getPropertyValueAsString(
                         RiceKeyConstants.MESSAGE_DISAPPROVAL_NOTE_TEXT_INTRO) + KRADConstants.BLANK_SPACE).length();
     }
 
     /**
      * Gets the document class
      *
      * @return Class<? extends Document> the document class.
      */
     @BeanTagAttribute
 	public Class<? extends Document> getDocumentClass() {
 		return this.documentClass;
 	}
 
     /**
      * Sets the document class
      *
      * @param documentClass
      */
 	public void setDocumentClass(Class<? extends Document> documentClass) {
 		this.documentClass = documentClass;
 	}
 
     /**
      * Gets boolean that indicates if the document view allows note attachments
      *
      * @return true if the document view allows note attachments
      */
     @BeanTagAttribute
 	public boolean isAllowsNoteAttachments() {
 		return this.allowsNoteAttachments;
 	}
 
     /**
      * Sets boolean that indicates if the document view allows note attachments
      *
      * @param allowsNoteAttachments
      */
 	public void setAllowsNoteAttachments(boolean allowsNoteAttachments) {
 		this.allowsNoteAttachments = allowsNoteAttachments;
 	}
 
     /**
      * Gets boolean that indicates if the document view allows note FYI
      *
      * @return true if the document view allows note FYI
      */
     @BeanTagAttribute
 	public boolean isAllowsNoteFYI() {
 		return this.allowsNoteFYI;
 	}
 
     /**
      * Sets boolean that indicates if the document view allows note FYI
      *
      * @param allowsNoteFYI
      */
 	public void setAllowsNoteFYI(boolean allowsNoteFYI) {
 		this.allowsNoteFYI = allowsNoteFYI;
 	}
 
     /**
      * Gets boolean that indicates if the document view displays the topic field in notes
      *
      * @return true if the document view displays the topic field in notes
      */
     @BeanTagAttribute
 	public boolean isDisplayTopicFieldInNotes() {
 		return this.displayTopicFieldInNotes;
 	}
 
     /**
      * Sets boolean that indicates if the document view displays the topic field in notes
      *
      * @param displayTopicFieldInNotes
      */
 	public void setDisplayTopicFieldInNotes(boolean displayTopicFieldInNotes) {
 		this.displayTopicFieldInNotes = displayTopicFieldInNotes;
 	}
 
     /**
      * Gets attachment types values finder classs
      *
      * @return attachment types values finder class
      */
     @BeanTagAttribute
 	public Class<? extends KeyValuesFinder> getAttachmentTypesValuesFinderClass() {
 		return this.attachmentTypesValuesFinderClass;
 	}
 
     /**
      * Sets attachment types values finder classs
      *
      * @param attachmentTypesValuesFinderClass
      */
 	public void setAttachmentTypesValuesFinderClass(Class<? extends KeyValuesFinder> attachmentTypesValuesFinderClass) {
 		this.attachmentTypesValuesFinderClass = attachmentTypesValuesFinderClass;
 	}
 
     /**
      * Indicates whether the view is a super user view, used for
      * KEW functionality
      *
      * @return true if the view is a super user viwe
      */
     public boolean isSuperUserView() {
         return superUserView;
     }
 
     /**
      * @see DocumentView#isSuperUserView()
      */
     public void setSuperUserView(boolean superUserView) {
         checkMutable(true);
         this.superUserView = superUserView;
     }
 
 }