| /* |
| * $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.tiles; |
| |
| import java.io.IOException; |
| |
| import org.apache.tiles.request.ApplicationContext; |
| import org.apache.tiles.request.Request; |
| |
| /** |
| * An encapsulation of the tiles framework. This interface is |
| * used to expose tiles features to frameworks which leverage |
| * it as a plugin. It can alternately be used by web applications |
| * which would like a programmatic interface. |
| * |
| * @since 2.0 |
| * @version $Rev$ $Date$ |
| */ |
| public interface TilesContainer { |
| |
| /** |
| * Retrieve the containers context. |
| * |
| * @return current application context |
| */ |
| ApplicationContext getApplicationContext(); |
| |
| /** |
| * Retrive the attribute context of the current request. |
| * @param request The request. |
| * @return map of the attributes in the current attribute context. |
| */ |
| AttributeContext getAttributeContext(Request request); |
| |
| /** |
| * Starts a new context, where attribute values are stored independently |
| * from others.<br> |
| * When the use of the contexts is finished, call |
| * {@link TilesContainer#endContext(Request)} |
| * @param request The request. |
| * |
| * @return The newly created context. |
| */ |
| AttributeContext startContext(Request request); |
| |
| /** |
| * Ends a context, where attribute values are stored independently |
| * from others.<br> |
| * It must be called after a |
| * {@link TilesContainer#startContext(Request)} call. |
| * @param request The request. |
| */ |
| void endContext(Request request); |
| |
| /** |
| * Renders the current context, as it is. |
| * @param request The request. |
| * |
| * @since 2.1.0 |
| */ |
| void renderContext(Request request); |
| |
| /** |
| * Executes a preparer. |
| * |
| * @param preparer The name of the preparer to execute. |
| * @param request The request. |
| */ |
| void prepare(String preparer, Request request); |
| |
| /** |
| * Render the given tiles request. |
| * |
| * @param definition the current definition. |
| * @param request The request. |
| */ |
| void render(String definition, Request request); |
| |
| /** |
| * Renders the specified definition. |
| * @param definition The definition to render. |
| * @param request The request context. |
| */ |
| void render(Definition definition, Request request); |
| |
| /** |
| * Render the given Attribute. |
| * |
| * @param attribute The attribute to render. |
| * @param request The request. |
| * @throws IOException If something goes wrong during writing to the output. |
| * @since 2.1.2 |
| */ |
| void render(Attribute attribute, Request request) |
| throws IOException; |
| |
| /** |
| * Evaluates the given attribute. |
| * |
| * @param attribute The attribute to evaluate. |
| * @param request The request. |
| * @return The evaluated object. |
| * @since 2.1.0 |
| */ |
| Object evaluate(Attribute attribute, Request request); |
| |
| /** |
| * Returns a definition specifying its name. |
| * |
| * @param definitionName The name of the definition to find. |
| * @param request The request context. |
| * @return The definition, if found. |
| */ |
| Definition getDefinition(String definitionName, |
| Request request); |
| |
| /** |
| * Determine whether or not the definition exists. |
| * |
| * @param definition the name of the definition. |
| * @param request The request. |
| * @return true if the definition is found. |
| */ |
| boolean isValidDefinition(String definition, Request request); |
| } |