package morepaste.util;

import java.util.Vector;
import java.util.NoSuchElementException;
import javax.swing.DefaultListModel;

/**
 * @version 1.0.1 2002-01-21
 * @author Takashi KOBAYASHI
 * @see javax.swing.DefaultListModel
 */
public class CheckBoxListModel extends DefaultListModel {
	private Vector selected, enabled;
	private boolean defaultSelected;
	private boolean defaultEnabled;

	public CheckBoxListModel() {
		super();
		selected = new Vector();
		enabled = new Vector();

		defaultSelected = false;
		defaultEnabled = true;
	}

//-------------------- getter/setter

	public void setDefaultChecked( boolean state ) {
		defaultSelected = state;
	}

	public boolean getDefaultChecked() {
		return defaultSelected;
	}

	public void setDefaultEnabled( boolean state ) {
		defaultEnabled = state;
	}

	public boolean getDefaultEnabled() {
		return defaultEnabled;
	}

	public boolean isSelectedAt( int index ) {
		Object obj = selected.get( index );
		if( obj == null ) {
			throw new NoSuchElementException();
		}
		return ( (Boolean)obj ).booleanValue();
	}

	public void setSelectedAt( int index, boolean selected ) {
		if( get( index ) == null ) {
			throw new NoSuchElementException();
		}
		this.selected.set( index, new Boolean( selected ) );
	}


	public boolean isEnabledAt( int index ) {
		Object obj = enabled.get( index );
		if( obj == null ) {
			throw new NoSuchElementException();
		}
		return ( (Boolean)obj ).booleanValue();
	}

	public void setEnabledAt( int index, boolean enabled ) {
		if( get( index ) == null ) {
			throw new NoSuchElementException();
		}
		this.enabled.set( index, new Boolean( enabled ) );
	}

//-------------------- new apllicable

	public synchronized void add( int index, Object obj, boolean selected ) {
		this.selected.add( index, new Boolean( selected ) );
		this.enabled.add( index, new Boolean( defaultEnabled ) );
		super.add( index, obj );
	}

	public synchronized void addElement( Object obj, boolean selected ) {
		add( getSize(), obj, selected );
	}

//-------------------- for compatibility

	public synchronized void add( int index, Object obj ) {
		add( index, obj, defaultSelected );
	}

	public synchronized void addElement( Object obj ) {
		addElement( obj, defaultSelected );
	}

	public synchronized void clear() {
		selected.clear();
		enabled.clear();
		super.clear();
	}

	public synchronized void insertElementAt( Object obj, int index ) {
		add( index, obj );
	}

	public synchronized Object remove( int index ) {
		selected.remove( index );
		enabled.remove( index );
		return super.remove( index );
	}

	public synchronized void removeAllElements() {
		selected.removeAllElements();
		enabled.removeAllElements();
		super.removeAllElements();
	}

	public synchronized boolean removeElement( Object obj ) {
		int i = indexOf( obj );
		selected.removeElementAt( i );
		enabled.removeElementAt( i );
		return super.removeElement( obj );
	}

	public synchronized void removeElementAt( int index ) {
		remove( index );
	}

	public synchronized void removeRange( int fromIndex, int toIndex ) {
		for(int i = toIndex; i >= fromIndex; i--) {
			selected.removeElementAt( i );
			enabled.removeElementAt( i );
			super.removeElementAt( i );
		}
		fireIntervalRemoved(this, fromIndex, toIndex);
	}

	public synchronized Object set(int index, Object element) {
		selected.setElementAt( new Boolean( defaultSelected ), index );
		enabled.setElementAt( new Boolean( defaultEnabled ), index );
		return super.set( index, element );
	}

	public synchronized void setElementAt(Object obj, int index) {
		set( index, obj );
	}

	public synchronized void setSize( int newSize ) {
		selected.setSize( newSize );
		enabled.setSize( newSize );
		super.setSize( newSize );
	}

	public synchronized void trimToSize() {
		selected.trimToSize();
		enabled.trimToSize();
		super.trimToSize();
	}
}