/*
 * Copyright 2005 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 
package org.wamblee.photos.tapestry;

import org.apache.tapestry.engine.IPropertySource;
import org.apache.tapestry.request.RequestContext;
import org.wamblee.general.BeanKernel;
import org.wamblee.photos.model.Album;
import org.wamblee.photos.model.Photo;
import org.wamblee.photos.model.PhotoEntry;

/**
 * Global object for the photos application representing the photo album. 
 *
 */
public class PhotoAlbum {
    /**
     * Root album. 
     */
	private Album _root;

    // TODO remove this constructor, 
    /**
     * Constructs the global object. 
     * @param aContext Request context. 
     * @param aProperties Configuration properties. 
     */
	public PhotoAlbum(RequestContext aContext, IPropertySource aProperties) {
		_root = BeanKernel.getBeanFactory().find(Album.class); 
	}
    
    /**
     * Constructs the photo album. 
     * @param aRoot Root album. 
     */
    public PhotoAlbum(Album aRoot) { 
        _root = aRoot; 
    }

    /**
     * Gets the root album. 
     * @return Root album. 
     */
	private synchronized Album getRoot() {
		return _root;
	}

    /**
     * Gets the album at a specific path. 
     * @param relativePath Relative path.  
     * @return Album. 
     */
	public Album getAlbum(String relativePath) {
		return (Album) getEntry(relativePath);
	}

    /**
     * Gets the photo at the specific path. 
     * @param relativePath Relative path. 
     * @return Photo. 
     */
	public Photo getPhoto(String relativePath) {
		return (Photo) getEntry(relativePath);
	}

    /**
     * Gets the entry at the given relative path. 
     * @param relativePath Relative path. 
     * @return Entry. 
     */
	public PhotoEntry getEntry(String relativePath) {
		return getRoot().getEntry(relativePath);
	}

}