| /* |
| * 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 javax.faces.webapp; |
| |
| import javax.faces.component.EditableValueHolder; |
| import javax.faces.component.UIComponent; |
| import javax.faces.validator.Validator; |
| import javax.servlet.jsp.JspException; |
| import javax.servlet.jsp.tagext.Tag; |
| import javax.servlet.jsp.tagext.TagSupport; |
| |
| /** |
| * @author Manfred Geiler (latest modification by $Author$) |
| * @version $Revision$ $Date$ |
| */ |
| public abstract class ValidatorELTag |
| extends TagSupport |
| { |
| private static final long serialVersionUID = 8794036166323016663L; |
| |
| public int doStartTag() |
| throws javax.servlet.jsp.JspException |
| { |
| UIComponentClassicTagBase componentTag = UIComponentELTag.getParentUIComponentClassicTagBase(pageContext); |
| if (componentTag == null) |
| { |
| throw new JspException("no parent UIComponentTag found"); |
| } |
| if (!componentTag.getCreated()) |
| { |
| return Tag.SKIP_BODY; |
| } |
| |
| Validator validator = createValidator(); |
| |
| UIComponent component = componentTag.getComponentInstance(); |
| if (component == null) |
| { |
| throw new JspException("parent UIComponentTag has no UIComponent"); |
| } |
| if (!(component instanceof EditableValueHolder)) |
| { |
| throw new JspException("UIComponent is no EditableValueHolder"); |
| } |
| ((EditableValueHolder)component).addValidator(validator); |
| |
| return Tag.SKIP_BODY; |
| } |
| |
| protected abstract Validator createValidator() |
| throws JspException; |
| |
| } |