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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 java.util.List;

import cz.vutbr.web.css.Declaration;
import cz.vutbr.web.css.RuleSet;
import cz.vutbr.web.css.CombinedSelector;

/**
 * Basic holder of declarations with CSS selectors
 * 
 * @author kapy
 */
public class RuleSetImpl extends AbstractRuleBlock implements RuleSet {

	protected CombinedSelector[] selectors;
	
	protected RuleSetImpl() {
		super();
		this.selectors = new CombinedSelector[0];
	}
	
	public RuleSetImpl(CombinedSelector[] selectors) {
		super();
		this.selectors = selectors;
	}
	
	/**
	 * Shallow copy constructor
	 * @param rs RuleSet to share selectors and declarations with 
	 */
	protected RuleSetImpl(RuleSet rs) {
		super();
		this.selectors = rs.getSelectors();
		this.replaceAll(rs.asList());
	}
	
	
    /**
	 * @return the selectors
	 */
	public CombinedSelector[] getSelectors() {
		return selectors;
	}

	/**
	 * @param selectors the selectors to set
	 * @return Modified instance
	 */
	public RuleSet setSelectors(List selectors) {
		this.selectors = selectors.toArray(new CombinedSelector[selectors.size()]);
		return this;
	}

	@Override
    public String toString() {
    	return this.toString(0);
    }
    
    
    public String toString(int depth) {
    	
    	StringBuilder sb = new StringBuilder();
    	
    	// append selectors
    	sb = OutputUtil.appendTimes(sb, OutputUtil.DEPTH_DELIM, depth);
    	sb = OutputUtil.appendArray(sb, selectors, OutputUtil.SELECTOR_DELIM);

    	// append rules (declarations)
    	sb.append(OutputUtil.RULE_OPENING);
    	sb = OutputUtil.appendList(sb, list, OutputUtil.EMPTY_DELIM, depth + 1); 
    	sb = OutputUtil.appendTimes(sb, OutputUtil.DEPTH_DELIM, depth);
        sb.append(OutputUtil.RULE_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
				+ ((selectors == null) ? 0 : selectors.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 RuleSetImpl))
			return false;
		RuleSetImpl other = (RuleSetImpl) obj;
		if (selectors == null) {
			if (other.selectors != null)
				return false;
		} else if (!selectors.equals(other.selectors))
			return false;
		return true;
	}

	
    
    
    
}