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package javax.swing.colorchooser;

import javax.swing.*;
import javax.swing.event.*;
import java.awt.Color;

A model that supports selecting a Color.
Author:
Steve Wilson
See Also:
Color/**
 * A model that supports selecting a <code>Color</code>.
 *
 * @author Steve Wilson
 *
 * @see java.awt.Color
 */
public interface ColorSelectionModel {
    
Returns the selected Color which should be
non-null.
See Also:
setSelectedColor
Returns:
 the selected Color/**
     * Returns the selected <code>Color</code> which should be
     * non-<code>null</code>.
     *
     * @return  the selected <code>Color</code>
     * @see     #setSelectedColor
     */
    Color getSelectedColor();

    
Sets the selected color to color.
Note that setting the color to null
is undefined and may have unpredictable results.
This method fires a state changed event if it sets the
current color to a new non-null color.
Params:
color – the new Color
See Also:
getSelectedColor
addChangeListener/**
     * Sets the selected color to <code>color</code>.
     * Note that setting the color to <code>null</code>
     * is undefined and may have unpredictable results.
     * This method fires a state changed event if it sets the
     * current color to a new non-<code>null</code> color.
     *
     * @param color the new <code>Color</code>
     * @see   #getSelectedColor
     * @see   #addChangeListener
     */
    void setSelectedColor(Color color);

    
Adds listener as a listener to changes in the model.
Params:
listener – the ChangeListener to be added/**
     * Adds <code>listener</code> as a listener to changes in the model.
     * @param listener the <code>ChangeListener</code> to be added
     */
    void addChangeListener(ChangeListener listener);

    
Removes listener as a listener to changes in the model.
Params:
listener – the ChangeListener to be removed/**
     * Removes <code>listener</code> as a listener to changes in the model.
     * @param listener the <code>ChangeListener</code> to be removed
     */
    void removeChangeListener(ChangeListener listener);
}