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jStyleParser is a CSS parser written in Java. It has its own application interface that is designed to allow an efficient CSS processing in Java and mapping the values to the Java data types. It parses CSS 2.1 style sheets into structures that can be efficiently assigned to DOM elements. It is intended be the primary CSS parser for the CSSBox library. While handling errors, it is user agent conforming according to the CSS specification.

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package cz.vutbr.web.csskit;

import cz.vutbr.web.css.Declaration;
import cz.vutbr.web.css.Term;

/**
 * CSS Declaration
 * 
 * @author kapy
 * @author Jan Svercl, VUT Brno, 2008
 */
public class DeclarationImpl extends AbstractRule> implements Declaration {

	protected String property;
	protected boolean important;
	protected Source source;

	protected DeclarationImpl() {
		this.property = "";
		this.important = false;
		this.source = null;
	}
	
	/**
	 * Shallow copy constructor
	 * @param clone Declaration to share term values with
	 */
	protected DeclarationImpl(Declaration clone) {
		this.property = clone.getProperty();
		this.important = clone.isImportant();
		this.source = new Source(clone.getSource());
		this.replaceAll(clone.asList());
	}

	/**
	 * This declaration type is never inherited
	 * @return false
	 */
	public boolean isInherited(int level) {
		return false;
	}
	
	public int getInheritanceLevel() {
		return 0;
	}
	
	/**
	 * This declaration type is not about to be compared
	 * using precise conditions
	 */
	public int compareTo(Declaration o) {
		
		if(this.isImportant() && ! o.isImportant())
            return 1;
        else if(o.isImportant() && ! this.isImportant())
            return -1;
		
		return 0;
	}
	
    /**
	 * @return the property
	 */
	public String getProperty() {
		return property;
	}



	/**
	 * Sets the property name. Automatically converts the name to lowercase because
	 * the CSS property names should be case-insensitive.
	 * @param property the property to set
	 */
	public void setProperty(String property) {
		this.property = property.toLowerCase();
	}


	/**
	 * @return the important
	 */
	public boolean isImportant() {
		return important;
	}

	/**
	 * @param important the important to set
	 */
	public void setImportant(boolean important) {
		this.important = important;
	}	

	@Override
    public Source getSource()
    {
        return source;
    }

    @Override
    public void setSource(Source src)
    {
        this.source = src;
    }

	@Override
	public String toString() {
		return this.toString(0);
	}
	

	public String toString(int depth) {
		
		StringBuilder sb = new StringBuilder();
		
		// add property
		sb = OutputUtil.appendTimes(sb, OutputUtil.DEPTH_DELIM, depth);
		sb.append(property).append(OutputUtil.PROPERTY_OPENING);
		
		// add terms
		sb = OutputUtil.appendList(sb, list, OutputUtil.EMPTY_DELIM);
		
		// importance flag
		if(important) sb.append(OutputUtil.SPACE_DELIM).append(OutputUtil.IMPORTANT_KEYWORD);
		
		sb.append(OutputUtil.PROPERTY_CLOSING);
		
        return sb.toString();
    }

	/* (non-Javadoc)
	 * @see java.lang.Object#hashCode()
	 */
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = super.hashCode();
		result = prime * result + (important ? 1231 : 1237);
		result = prime * result
				+ ((property == null) ? 0 : property.hashCode());
		return result;
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#equals(java.lang.Object)
	 */
	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (!super.equals(obj))
			return false;
		if (!(obj instanceof DeclarationImpl))
			return false;
		DeclarationImpl other = (DeclarationImpl) obj;
		if (important != other.important)
			return false;
		if (property == null) {
			if (other.property != null)
				return false;
		} else if (!property.equals(other.property))
			return false;
		return true;
	}
    
}