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

Tue, 14 May 2013 10:14:53 -0700

author
jjg
date
Tue, 14 May 2013 10:14:53 -0700
changeset 1740
ce4f0769b4b2
parent 1739
e6c5b5ee9fac
child 1751
ca8808c88f94
permissions
-rw-r--r--

8011668: Allow HTMLWriter.getResource to take Content args
Reviewed-by: darcy

     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  */
    26 package com.sun.tools.doclets.formats.html.markup;
    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;
    35 /**
    36  * A sequence of Content nodes.
    37  */
    38 public class ContentBuilder extends Content {
    39     protected List<Content> contents = Collections.<Content>emptyList();
    41     @Override
    42     public void addContent(Content content) {
    43         if ((content instanceof ContentBuilder) && content.isEmpty())
    44             return;
    45         ensureMutableContents();
    46         if (content instanceof ContentBuilder) {
    47             contents.addAll(((ContentBuilder) content).contents);
    48         } else
    49             contents.add(content);
    50     }
    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     }
    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     }
    75     @Override
    76     public boolean isEmpty() {
    77         for (Content content: contents) {
    78             if (!content.isEmpty())
    79                 return false;
    80         }
    81         return true;
    82     }
    84     @Override
    85     public int charCount() {
    86         int n = 0;
    87         for (Content c : contents)
    88             n += c.charCount();
    89         return n;
    90     }
    92     private void ensureMutableContents() {
    93         if (contents.isEmpty())
    94             contents = new ArrayList<Content>();
    95     }
    96 }

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