    001    // Copyright 2008, 2010, 2011 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    // http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014
    015    package org.apache.tapestry5.services;
    016
    017    /**
    018     * A service that allows listeners to be registered to learn about {@link org.apache.tapestry5.Link} creation.
    019     */
    020    public interface LinkCreationHub
    021    {
    022        /**
    023         * Adds a listener. If the scope of the listener is per-thread, then it must be removed.
    024         *
    025         * @param listener
    026         */
    027        void addListener(LinkCreationListener listener);
    028
    029        /**
    030         * Adds a listener. If the scope of the listener is per-thread, then it must be removed.
    031         *
    032         * @param listener
    033         * @since 5.2.0
    034         */
    035        void addListener(LinkCreationListener2 listener);
    036    }