/*******************************************************************************
 * Copyright (c) 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.wst.xml.core.internal.validation.eclipse;

/**
 * The message info helper determines the selection strategy for elements
 * in a SSE editor.
 *
 */
public class XMLMessageInfoHelper
{
  public XMLMessageInfoHelper()
  {
    super();
  }

  /**
   *  Returns an array containing information about what should be underlined with the red "squiggles"
   *  using the errorKey, and the messageArguments.
   *  <br>Position 0 of the array returned contains the selection Strategy, or what DOM Element to underline.  
   *  For example "ATTRIBUTE_NAME"  
   *  <br>Position 1 contains the name or value to squiggle.
   *  <p>For example, if we wanted to squiggle the attribute name of an attribute name
   *  foo this method would return {"ATTRIBUTE_NAME", "foo"}
   *  </p>
   *  @param errorKey 
   *  		The error key given by the Xerces parser.
   *  @param messageArguments 
   *  		The arguments used by Xerces to "fill in the blanks" of their messages.
   *  @return 
   *  		An array containing the squiggle information.
   *  @see org.eclipse.wst.xml.ui.internal.validation.DelegatingSourceValidator
   *  
   */
  public String[] createMessageInfo(String errorKey, Object[] messageArguments)
  { 
    String selectionStrategy = null;
    String nameOrValue = null;
    
    if(errorKey != null)
    {
      if (errorKey.equals("cvc-complex-type.2.4.a") || errorKey.equals("cvc-complex-type.2.4.d") || errorKey.equals("cvc-complex-type.2.4.b") || errorKey.equals("MSG_CONTENT_INVALID") //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
        | errorKey.equals("MSG_CONTENT_INCOMPLETE") || errorKey.equals("MSG_REQUIRED_ATTRIBUTE_NOT_SPECIFIED") || errorKey.equals("cvc-complex-type.4")) //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
      {
        selectionStrategy = "START_TAG"; //$NON-NLS-1$
      }
      else if (errorKey.equals("cvc-type.3.1.3")) //$NON-NLS-1$
      {
        selectionStrategy = "TEXT"; //$NON-NLS-1$
      }
      else if (errorKey.equals("cvc-complex-type.2.3")) //$NON-NLS-1$
      {
    	selectionStrategy = "FIRST_NON_WHITESPACE_TEXT"; //$NON-NLS-1$
      }
      else if (errorKey.equals("cvc-type.3.1.1")) //$NON-NLS-1$
      {
        selectionStrategy = "ALL_ATTRIBUTES"; //$NON-NLS-1$
      }
      else if (errorKey.equals("cvc-complex-type.3.2.2") || errorKey.equals("MSG_ATTRIBUTE_NOT_DECLARED")) //$NON-NLS-1$ //$NON-NLS-2$
      {
        selectionStrategy = "ATTRIBUTE_NAME"; //$NON-NLS-1$
	    //in this case we need nameOrValue to be the name of the attribute to underline
	    nameOrValue = (String)messageArguments[1];
      }
      else if (errorKey.equals("cvc-attribute.3") || errorKey.equals("MSG_ATTRIBUTE_VALUE_NOT_IN_LIST") || errorKey.equals("cvc-complex-type.3.1")) //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
      {	
    	selectionStrategy = "ATTRIBUTE_VALUE";   //$NON-NLS-1$
		//in this case we need nameOrValue to be the name of the Attribute
    	if (errorKey.equals("cvc-attribute.3") || errorKey.equals("cvc-complex-type.3.1")) //$NON-NLS-1$ //$NON-NLS-2$
    	{ 
    	  nameOrValue = (String)messageArguments[1];
    	}
    	else if (errorKey.equals("MSG_ATTRIBUTE_VALUE_NOT_IN_LIST")) //$NON-NLS-1$
    	{	
    	  nameOrValue = (String)messageArguments[0];
    	}
      }
      else if (errorKey.equals("cvc-elt.4.2")) //$NON-NLS-1$
      {	
    	selectionStrategy="VALUE_OF_ATTRIBUTE_WITH_GIVEN_VALUE"; //$NON-NLS-1$
		//in this case we need nameOrValue to be the value of the attribute we want to unerline
    	nameOrValue = (String)messageArguments[1];	
      }
      else if (errorKey.equals("EntityNotDeclared")) //$NON-NLS-1$
      {  	
    	selectionStrategy="TEXT_ENTITY_REFERENCE"; //$NON-NLS-1$
        nameOrValue = (String)messageArguments[0];
      }
      else if (errorKey.equals("ElementUnterminated")) //$NON-NLS-1$
	  {
		selectionStrategy = "ENTIRE_ELEMENT"; //$NON-NLS-1$
	  }
    }
    String messageInfo[] = new String[2];
    messageInfo[0] = selectionStrategy != null? selectionStrategy: ""; //$NON-NLS-1$
    messageInfo[1] = nameOrValue;
    return messageInfo;
  }
}