001 // Copyright 2008, 2011 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.tapestry5.corelib.components; 016 017 import org.apache.tapestry5.MarkupWriter; 018 import org.apache.tapestry5.annotations.Mixin; 019 import org.apache.tapestry5.annotations.Parameter; 020 import org.apache.tapestry5.corelib.mixins.DiscardBody; 021 022 import java.util.regex.Pattern; 023 024 /** 025 * Outputs paragraph oriented text, typically collected via a {@link org.apache.tapestry5.corelib.components.TextArea} 026 * component. The TextArea is split into lines, and each line it output inside its own <p> element. 027 * 028 * @see TextArea 029 */ 030 public class TextOutput 031 { 032 @Parameter(required = true) 033 private String value; 034 035 @Mixin 036 private DiscardBody discardBody; 037 038 private static final Pattern SPLIT_PATTERN = Pattern.compile("((\\r\\n)|\\r|\\n)", Pattern.MULTILINE); 039 040 void beginRender(MarkupWriter writer) 041 { 042 if (value == null) return; 043 044 String[] lines = SPLIT_PATTERN.split(value); 045 046 for (String line : lines) 047 { 048 writer.element("p"); 049 050 writer.write(line.trim()); 051 052 writer.end(); 053 } 054 } 055 056 void injectValue(String value) 057 { 058 this.value = value; 059 } 060 }