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/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * 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:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/

package org.eclipse.birt.report.model.css;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import org.w3c.dom.DOMException;
import org.w3c.dom.css.CSSRule;
import org.w3c.dom.css.CSSStyleDeclaration;
import org.w3c.dom.css.CSSValue;

/**
 * Implements CSSStyleDeclaration to store all the property values.
 */

public class StyleDeclaration implements CSSStyleDeclaration, Serializable
{

	/**
	 * Document for serialVersionUID.
	 */
	private static final long serialVersionUID = -1098407039390450722L;
	
	/**
	 * The properties of the declaration.
	 */

	private List properties = new ArrayList( );

	/**
	 * Default constructor.
	 *  
	 */

	public StyleDeclaration( )
	{

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#getLength()
	 */

	public int getLength( )
	{
		return properties.size( );
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#getCssText()
	 */
	public String getCssText( )
	{
		StringBuffer sb = new StringBuffer( );
		sb.append( "{" ); //$NON-NLS-1$

		//if newlines requested in text
		//sb.append("\n");

		for ( int i = 0; i < properties.size( ); ++i )
		{
			Property p = (Property) properties.get( i );
			if ( p != null )
			{
				sb.append( p.toString( ) );
			}
			if ( i < properties.size( ) - 1 )
			{
				sb.append( "; " ); //$NON-NLS-1$
			}

			//if newlines requested in text
			//sb.append("\n");
		}
		sb.append( "}" ); //$NON-NLS-1$
		return sb.toString( );
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#item(int)
	 */

	public String item( int index )
	{
		Property p = (Property) properties.get( index );
		return ( p != null ) ? p.getName( ) : ""; //$NON-NLS-1$
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#setCssText(java.lang.String)
	 */
	public void setCssText( String cssText ) throws DOMException
	{

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#getParentRule()
	 */

	public CSSRule getParentRule( )
	{
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#getPropertyPriority(java.lang.String)
	 */

	public String getPropertyPriority( String propertyName )
	{
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#getPropertyValue(java.lang.String)
	 */

	public String getPropertyValue( String propertyName )
	{
		Property p = getPropertyDeclaration( propertyName );
		return ( p != null ) ? p.getValue( ).toString( ) : ""; //$NON-NLS-1$
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#removeProperty(java.lang.String)
	 */

	public String removeProperty( String propertyName ) throws DOMException
	{
		for ( int i = 0; i < properties.size( ); i++ )
		{
			Property p = (Property) properties.get( i );
			if ( p.getName( ).equalsIgnoreCase( propertyName ) )
			{
				properties.get( i );
				return p.getValue( ).toString( );
			}
		}
		return ""; //$NON-NLS-1$
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#getPropertyCSSValue(java.lang.String)
	 */

	public CSSValue getPropertyCSSValue( String propertyName )
	{
		Property p = getPropertyDeclaration( propertyName );
		return ( p != null ) ? p.getValue( ) : null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.w3c.dom.css.CSSStyleDeclaration#setProperty(java.lang.String,
	 *      java.lang.String, java.lang.String)
	 */
	public void setProperty( String propertyName, String value, String priority )
			throws DOMException
	{

	}

	/**
	 * Gets the property with the given name.
	 * 
	 * @param name
	 *            the name of the property to get
	 * @return the property with the name, otherwise null
	 */

	private Property getPropertyDeclaration( String name )
	{
		for ( int i = 0; i < properties.size( ); i++ )
		{
			Property p = (Property) properties.get( i );
			if ( p.getName( ).equalsIgnoreCase( name ) )
			{
				return p;
			}
		}
		return null;
	}

	/**
	 * Adds a property into the style declaration.
	 * 
	 * @param p
	 *            the property to add
	 */

	public void addProperty( Property p )
	{
		properties.add( p );
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Object#toString()
	 */

	public String toString( )
	{
		return getCssText( );
	}
}