001 package org.apache.myfaces.tobago.renderkit; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one or more 005 * contributor license agreements. See the NOTICE file distributed with 006 * this work for additional information regarding copyright ownership. 007 * The ASF licenses this file to You under the Apache License, Version 2.0 008 * (the "License"); you may not use this file except in compliance with 009 * the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, software 014 * distributed under the License is distributed on an "AS IS" BASIS, 015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 016 * See the License for the specific language governing permissions and 017 * limitations under the License. 018 */ 019 020 import static org.apache.myfaces.tobago.TobagoConstants.ATTR_ONCHANGE; 021 022 import javax.faces.component.UIComponent; 023 import javax.faces.component.UIInput; 024 import javax.faces.context.FacesContext; 025 026 public class HtmlUtils { 027 028 public static final String LAYOUT_ATTRIBUTE_PREFIX = "layout."; 029 030 public static String generateAttribute(String name, Object value) { 031 String stringValue; 032 if (value == null) { 033 stringValue = null; 034 } else if (value instanceof String) { 035 stringValue = (String) value; 036 } else { 037 stringValue = value.toString(); 038 } 039 return (stringValue != null && stringValue.length() > 0) 040 ? name + "=\"" + value + "\"" 041 : ""; 042 } 043 044 public static String appendAttribute(UIComponent component, String name, 045 String appendValue) { 046 Object attribute = component.getAttributes().get(name); 047 return attribute != null 048 ? attribute.toString() + " " + appendValue : appendValue; 049 } 050 051 public static String generateOnchange(UIInput component, 052 FacesContext facesContext) { 053 054 StringBuilder buffer = new StringBuilder(); 055 /*Validator[] validators = component.getValidators(); 056 for (int i = 0; i < validators.length; i++) { 057 if (validators[i] instanceof LongRangeValidator) { 058 String functionCall = "validateLongRange('" 059 + component.getClientId(facesContext) + "')"; 060 if (LOG.isDebugEnabled()) { 061 LOG.debug("validator functionCall: " + functionCall); 062 } 063 buffer.append(functionCall); 064 } else { 065 buffer.append("true"); 066 } 067 if (i + 1 < validators.length) { // is not last 068 buffer.append(" && "); 069 } 070 } */ 071 072 Object onchange = component.getAttributes().get(ATTR_ONCHANGE); 073 if (onchange != null) { // append the onchange attribute 074 if (buffer.length() > 0) { 075 buffer.append(" && "); 076 } 077 buffer.append(onchange); 078 } 079 080 if (buffer.length() > 0) { // has content ? 081 return buffer.toString(); 082 } else { 083 return null; 084 } 085 } 086 087 }