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 015package org.apache.tapestry.markup; 016 017import java.io.PrintWriter; 018import java.util.Map; 019 020import org.apache.commons.logging.Log; 021import org.apache.hivemind.util.Defense; 022import org.apache.tapestry.IMarkupWriter; 023import org.apache.tapestry.util.ContentType; 024 025/** 026 * @author Howard M. Lewis Ship 027 * @since 4.0 028 */ 029public class MarkupWriterSourceImpl implements MarkupWriterSource 030{ 031 private Log _log; 032 033 private MarkupFilter _defaultFilter = new AsciiMarkupFilter(); 034 035 private Map _contributions; 036 037 public void setContributions(Map contributions) 038 { 039 _contributions = contributions; 040 } 041 042 public IMarkupWriter newMarkupWriter(PrintWriter writer, ContentType contentType) 043 { 044 Defense.notNull(writer, "writer"); 045 Defense.notNull(contentType, "contentType"); 046 047 MarkupFilter filter = findFilter(contentType); 048 049 return new MarkupWriterImpl(contentType.toString(), writer, filter); 050 } 051 052 private MarkupFilter findFilter(ContentType contentType) 053 { 054 // Look for an exact match (caseless). 055 056 String key = contentType.toString().toLowerCase(); 057 058 MarkupFilter result = (MarkupFilter) _contributions.get(key); 059 060 if (result == null) 061 result = (MarkupFilter) _contributions.get(contentType.getMimeType()); 062 063 if (result == null) 064 { 065 _log.error(MarkupMessages.noFilterMatch(contentType)); 066 067 result = _defaultFilter; 068 } 069 070 return result; 071 } 072 073 public void setLog(Log log) 074 { 075 _log = log; 076 } 077}