001// Copyright 2009 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
015package org.apache.tapestry5.internal.services;
016
017import org.apache.tapestry5.model.ComponentModel;
018
019/**
020 * Access to component models (as provided via {@link org.apache.tapestry5.internal.services.ComponentInstantiatorSource}).
021 * <p/>
022 * This is a good candidate to move into the public services package.
023 *
024 * @since 5.1.0.0
025 */
026public interface ComponentModelSource
027{
028    /**
029     * Returns the model for a particular component class name.
030     *
031     * @param componentClassName name of component class
032     * @return model for component
033     * @throws IllegalArgumentException if component class name does not match a known component
034     */
035    ComponentModel getModel(String componentClassName);
036
037    /**
038     * Returns the model for a page.  The page name is resolved to a component class name.
039     *
040     * @param pageName name of page
041     * @return the model for the page
042     * @throws IllegalArgumentException if the page name is not a known page name
043     */
044    ComponentModel getPageModel(String pageName);
045}