    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
    015    package org.apache.tapestry5.internal.services;
    016
    017    import 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     */
    026    public 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    }