/*
 * Jitsi, the OpenSource Java VoIP and Instant Messaging client.
 *
 * Distributable under LGPL license.
 * See terms of license at gnu.org.
 */
package net.java.sip.communicator.service.protocol;

import java.util.*;

import net.java.sip.communicator.service.protocol.event.*;

/**
 * This operation set provides interface for user search service.
 *
 * @author Hristo Terezov
 */
public interface OperationSetUserSearch
    extends OperationSet
{
    /**
     * Creates the search manager.
     */
    public void createSearchManager();

    /**
     * Removes search manager.
     */
    public void removeSearchManager();

    /**
     * Performs user search for the searched string and returns the contact
     * addresses of the found contacts.
     *
     * @param searchedString the text we want to query the server.
     * @return the list of found contact addresses.
     */
    public List<String> search(String searchedString);

    /**
     * Returns <tt>true</tt> if the user search service is enabled.
     *
     * @return <tt>true</tt> if the user search service is enabled.
     */
    public boolean isEnabled();

    /**
     * Adds <tt>UserSearchProviderListener</tt> instance to the list of
     * listeners.
     *
     * @param l the listener to be added
     */
    public void addUserSearchProviderListener(UserSearchProviderListener l);

    /**
     * Removes <tt>UserSearchProviderListener</tt> instance from the list of
     * listeners.
     *
     * @param l the listener to be removed
     */
    public void removeUserSearchProviderListener(UserSearchProviderListener l);
}