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1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.tools.doclets.formats.html.markup; |
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27 |
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28 import java.io.IOException; |
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29 import java.io.Writer; |
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30 import java.util.ArrayList; |
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31 import java.util.Collections; |
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32 import java.util.List; |
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33 import com.sun.tools.doclets.internal.toolkit.Content; |
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34 |
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35 /** |
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36 * A sequence of Content nodes. |
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37 */ |
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38 public class ContentBuilder extends Content { |
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39 protected List<Content> contents = Collections.<Content>emptyList(); |
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40 |
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41 @Override |
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42 public void addContent(Content content) { |
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43 if (content.isEmpty()) |
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44 return; |
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45 ensureMutableContents(); |
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46 if (content instanceof ContentBuilder) { |
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47 contents.addAll(((ContentBuilder) content).contents); |
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48 } else |
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49 contents.add(content); |
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50 } |
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51 |
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52 @Override |
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53 public void addContent(String text) { |
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54 if (text.isEmpty()) |
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55 return; |
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56 ensureMutableContents(); |
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57 Content c = contents.isEmpty() ? null : contents.get(contents.size() - 1); |
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58 StringContent sc; |
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59 if (c != null && c instanceof StringContent) { |
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60 sc = (StringContent) c; |
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61 } else { |
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62 contents.add(sc = new StringContent()); |
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63 } |
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64 sc.addContent(text); |
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65 } |
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66 |
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67 @Override |
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68 public boolean write(Writer writer, boolean atNewline) throws IOException { |
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69 for (Content content: contents) { |
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70 atNewline = content.write(writer, atNewline); |
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71 } |
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72 return atNewline; |
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73 } |
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74 |
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75 @Override |
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76 public boolean isEmpty() { |
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77 for (Content content: contents) { |
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78 if (!content.isEmpty()) |
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79 return false; |
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80 } |
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81 return true; |
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82 } |
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83 |
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84 private void ensureMutableContents() { |
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85 if (contents.isEmpty()) |
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86 contents = new ArrayList<Content>(); |
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87 } |
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88 } |