| // 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; |
| |
| import java.io.Serializable; |
| |
| /** |
| * An action that is associated with a component. This is used in several areas of Tapestry and is primarily an attempt |
| * to externalize state for a component so that it can be recorded outside the object. |
| * |
| * ComponentActions should be immutable. They are often created during one request and associated with a particular |
| * component instance. They are then used in a later request (with an equivalent component instance). |
| * |
| * ComponentActions are serializable (they are often serialized into Base64 strings for storage on the client). |
| */ |
| public interface ComponentAction<T> extends Serializable |
| { |
| /** |
| * Passed a component instance, the action should operate upon the instance. |
| */ |
| void execute(T component); |
| } |