001// Copyright 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.
014package org.apache.tapestry5.internal.services;
015
016import org.apache.tapestry5.commons.services.InvalidationEventHub;
017import org.apache.tapestry5.commons.services.InvalidationListener;
018import org.apache.tapestry5.services.ComponentClassResolver;
019
020/**
021 * Split-out implementation of {@link InvalidationEventHub} that separates it from {@link ComponentInstantiatorSource}.
022 * This was necessary due to some refactoring that made {@link ComponentClassResolver} and ComponentInstantiatorSource
023 * mutually dependent.
024 *
025 * @since 5.3
026 */
027public interface InternalComponentInvalidationEventHub extends InvalidationEventHub
028{
029    /**
030     * Invoked when the {@link ComponentInstantiatorSource} notices that
031     * a class file within any of the controlled packages has changed. Fires the
032     * {@link InvalidationListener#objectWasInvalidated()} notification.
033     */
034    void classInControlledPackageHasChanged();
035}