// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.GWT.eventbus.client.nonpublic;

import org.litesoft.commonfoundation.iterators.*;
import org.litesoft.logger.*;

import java.util.*;

public class LoggingStringSet implements LoggingCollection
{
    private Set mMembers = new HashSet();
    private Logger mLogger;
    private String mLogText;

    public LoggingStringSet( Logger pLogger, String pLogText )
    {
        mLogger = pLogger;
        mLogText = pLogText;
    }

    public synchronized void add( String[] pNewMembers )
    {
        if ( pNewMembers != null )
        {
            for ( int i = 0; i < pNewMembers.length; i++ )
            {
                add( pNewMembers[i] );
            }
        }
    }

    public synchronized void add( Set pNewMembers )
    {
        if ( pNewMembers != null )
        {
            for ( Iterator it = pNewMembers.iterator(); it.hasNext(); )
            {
                add( it.next().toString() );
            }
        }
    }

    public synchronized void add( String pNewMember )
    {
        if ( pNewMember != null )
        {
            mLogger.trace.log( "(", mLogText, "):", pNewMember );
            mMembers.add( pNewMember );
        }
    }

    @Override
    public synchronized void clear()
    {
        mMembers.clear();
    }

    @Override
    public synchronized boolean isEmpty()
    {
        return mMembers.isEmpty();
    }

    @Override
    public synchronized Iterator iterator()
    {
        return isEmpty() ? Iterators.empty() : getAndClearSet().iterator();
    }

    public synchronized Set getAndClearSet()
    {
        Set rv = mMembers;
        mMembers = Collections.EMPTY_SET;
        return rv;
    }

    public synchronized String[] getAndClearMembers()
    {
        if ( mMembers.isEmpty() )
        {
            return null;
        }
        String[] rv = new String[mMembers.size()];
        int i = 0;
        for ( Iterator it = mMembers.iterator(); it.hasNext(); )
        {
            rv[i++] = it.next().toString();
        }
        return rv;
    }

    public String toString()
    {
        return mLogText + ":" + mMembers;
    }
}