| // Copyright 2007-2013 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; |
| |
| /** |
| * Callback interface that allows for visiting the option groups and option models of a select model in correct order |
| * order. |
| */ |
| public interface SelectModelVisitor |
| { |
| /** |
| * Invoked once for each {@link OptionGroupModel}, just before invoking {@link #option(OptionModel)} for each |
| * embedded option within the group. |
| */ |
| void beginOptionGroup(OptionGroupModel groupModel); |
| |
| /** |
| * Invoked for each option within a group, and at the end, for each ungrouped option. |
| * |
| * @param optionModel |
| */ |
| void option(OptionModel optionModel); |
| |
| /** |
| * Invoked after all options within the group have been visited. |
| */ |
| void endOptionGroup(OptionGroupModel groupModel); |
| } |