| // Copyright 2006, 2008 The Apache Software Foundation |
| // |
| // 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.apache.tapestry5.runtime; |
| |
| import org.apache.tapestry5.ComponentResources; |
| |
| /** |
| * A stateful object that manages the process of rendering a page. Rending a page in Tapestry is based on a command |
| * queue. |
| */ |
| public interface RenderQueue |
| { |
| /** |
| * Adds the new command to the front of the queue. |
| */ |
| void push(RenderCommand command); |
| |
| /** |
| * Indicates that a component is starting its render. A stack of active components is used for exception reporting. |
| * |
| * @param resources identifies the component that is rendering |
| */ |
| void startComponent(ComponentResources resources); |
| |
| /** |
| * Corresponds to {@link #startComponent(String)}, used to denote when the most recently started component finishes |
| * rendering. |
| */ |
| void endComponent(); |
| } |