001 // Copyright 2005 The Apache Software Foundation 002 // 003 // Licensed under the Apache License, Version 2.0 (the "License"); 004 // you may not use this file except in compliance with the License. 005 // You may obtain a copy of the License at 006 // 007 // http://www.apache.org/licenses/LICENSE-2.0 008 // 009 // Unless required by applicable law or agreed to in writing, software 010 // distributed under the License is distributed on an "AS IS" BASIS, 011 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 // See the License for the specific language governing permissions and 013 // limitations under the License. 014 015 package org.apache.tapestry.form; 016 017 /** 018 * Object that provides support to objects that implement 019 * {@link org.apache.tapestry.form.FormComponentContributor}. For the moment, at least, this is all 020 * about client-side JavaScript generation. 021 * <p> 022 * TODO: Having support for regular expressions might be useful (and would allow a single 023 * {@link RegexpMatcher to be shared). 024 * 025 * @author Howard Lewis Ship 026 * @since 4.0 027 */ 028 public interface FormComponentContributorContext extends ValidationMessages 029 { 030 /** 031 * Includes the indicated script; the path is a path on the classpath. 032 */ 033 034 public void includeClasspathScript(String path); 035 036 /** 037 * Adds initialization to register a submit handler on the client side. A submit handler is a 038 * JavaScript method that accepts a single parameter, a (JavaScript) FormSubmitEvent. 039 * 040 * @param submitListener 041 * either the name of a submit listener ("myListener"), or an inline implementation 042 * of a listener function ("function(event) { ... } "). 043 */ 044 045 public void addSubmitHandler(String handler); 046 047 /** 048 * Registers a field for automatic focus. The goal is for the first field that is in error to 049 * get focus; failing that, the first required field; failing that, any field. 050 * 051 * @param priority 052 * a priority level used to determine whether the registered field becomes the focus 053 * field. Constants for this purpose are defined in {@link ValidationConstants}. 054 * @see org.apache.tapestry.FormBehavior#registerForFocus(IFormComponent, int) 055 */ 056 057 public void registerForFocus(int priority); 058 }