Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
NestedMarkupWriterImpl |
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| 1.5;1.5 |
1 | // Copyright 2005 The Apache Software Foundation |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | ||
15 | package org.apache.tapestry.markup; |
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16 | ||
17 | import java.io.CharArrayWriter; |
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18 | import java.io.PrintWriter; |
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19 | ||
20 | import org.apache.tapestry.IMarkupWriter; |
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21 | import org.apache.tapestry.NestedMarkupWriter; |
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22 | ||
23 | /** |
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24 | * Nested implementation of {@link org.apache.tapestry.IMarkupWriter}. Accumulates content in a |
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25 | * {@link java.io.CharArrayWriter}, and prints the buffered content (raw) on {@link #close()}. |
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26 | * |
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27 | * @author Howard M. Lewis Ship |
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28 | * @since 4.0 |
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29 | * @see org.apache.tapestry.IMarkupWriter#getNestedWriter() |
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30 | */ |
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31 | public class NestedMarkupWriterImpl extends MarkupWriterImpl implements NestedMarkupWriter |
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32 | { |
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33 | private final IMarkupWriter _parent; |
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34 | ||
35 | private final CharArrayWriter _charArrayWriter; |
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36 | ||
37 | private boolean _closed; |
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38 | ||
39 | public NestedMarkupWriterImpl(IMarkupWriter parent, MarkupFilter filter) |
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40 | { |
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41 | // Need to do this awkward double constructor because we want |
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42 | // to create an object and pass it to the parent constructor. |
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43 | // Java language rules get in the way here. |
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44 | ||
45 | 8 | this(parent, new CharArrayWriter(), filter); |
46 | 8 | } |
47 | ||
48 | private NestedMarkupWriterImpl(IMarkupWriter parent, CharArrayWriter writer, MarkupFilter filter) |
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49 | { |
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50 | 8 | super(parent.getContentType(), new PrintWriter(writer), filter); |
51 | ||
52 | 8 | _parent = parent; |
53 | 8 | _charArrayWriter = writer; |
54 | 8 | } |
55 | ||
56 | public String getBuffer() |
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57 | { |
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58 | 8 | if (_closed) |
59 | 1 | throw new IllegalStateException(MarkupMessages.closeOnce()); |
60 | ||
61 | 7 | _closed = true; |
62 | ||
63 | 7 | super.close(); |
64 | ||
65 | 7 | return _charArrayWriter.toString(); |
66 | } |
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67 | ||
68 | /** |
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69 | * Closes the internal {@link CharArrayWriter}, then captures its content and invokes |
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70 | * {@link org.apache.tapestry.IMarkupWriter#printRaw(String)} on the parent markup writer |
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71 | * (the writer that created this writer). |
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72 | */ |
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73 | ||
74 | public void close() |
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75 | { |
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76 | 5 | String content = getBuffer(); |
77 | ||
78 | 4 | _parent.printRaw(content); |
79 | 4 | } |
80 | } |