src/share/classes/com/sun/tools/doclets/formats/html/markup/ContentBuilder.java

changeset 1736
74cd21f2c2fe
child 1737
7a9ef837e57f
equal deleted inserted replaced
1735:8ea30d59ac41 1736:74cd21f2c2fe
1 /*
2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.doclets.formats.html.markup;
27
28 import java.io.IOException;
29 import java.io.Writer;
30 import java.util.ArrayList;
31 import java.util.Collections;
32 import java.util.List;
33 import com.sun.tools.doclets.internal.toolkit.Content;
34
35 /**
36 * A sequence of Content nodes.
37 */
38 public class ContentBuilder extends Content {
39 protected List<Content> contents = Collections.<Content>emptyList();
40
41 @Override
42 public void addContent(Content content) {
43 if (content.isEmpty())
44 return;
45 ensureMutableContents();
46 if (content instanceof ContentBuilder) {
47 contents.addAll(((ContentBuilder) content).contents);
48 } else
49 contents.add(content);
50 }
51
52 @Override
53 public void addContent(String text) {
54 if (text.isEmpty())
55 return;
56 ensureMutableContents();
57 Content c = contents.isEmpty() ? null : contents.get(contents.size() - 1);
58 StringContent sc;
59 if (c != null && c instanceof StringContent) {
60 sc = (StringContent) c;
61 } else {
62 contents.add(sc = new StringContent());
63 }
64 sc.addContent(text);
65 }
66
67 @Override
68 public boolean write(Writer writer, boolean atNewline) throws IOException {
69 for (Content content: contents) {
70 atNewline = content.write(writer, atNewline);
71 }
72 return atNewline;
73 }
74
75 @Override
76 public boolean isEmpty() {
77 for (Content content: contents) {
78 if (!content.isEmpty())
79 return false;
80 }
81 return true;
82 }
83
84 private void ensureMutableContents() {
85 if (contents.isEmpty())
86 contents = new ArrayList<Content>();
87 }
88 }

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