TextDocumentParser.cpp revision cad810f21b803229eb11403f9209855525a25d57 
1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
20 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include "config.h"
26#include "TextDocumentParser.h"
27
28#include "HTMLDocument.h"
29#include "HTMLNames.h"
30#include "HTMLTokenizer.h"
31#include "HTMLTreeBuilder.h"
32
33namespace WebCore {
34
35using namespace HTMLNames;
36
37TextDocumentParser::TextDocumentParser(HTMLDocument* document)
38    : HTMLDocumentParser(document, false)
39    , m_haveInsertedFakePreElement(false)
40{
41    tokenizer()->setState(HTMLTokenizer::PLAINTEXTState);
42}
43
44TextDocumentParser::~TextDocumentParser()
45{
46}
47
48void TextDocumentParser::append(const SegmentedString& text)
49{
50    if (!m_haveInsertedFakePreElement)
51        insertFakePreElement();
52    HTMLDocumentParser::append(text);
53}
54
55void TextDocumentParser::insertFakePreElement()
56{
57    // In principle, we should create a specialized tree builder for
58    // TextDocuments, but instead we re-use the existing HTMLTreeBuilder.
59    // We create a fake token and give it to the tree builder rather than
60    // sending fake bytes through the front-end of the parser to avoid
61    // distrubing the line/column number calculations.
62
63    RefPtr<Attribute> styleAttribute = Attribute::createMapped("style", "word-wrap: break-word; white-space: pre-wrap;");
64    RefPtr<NamedNodeMap> attributes = NamedNodeMap::create();
65    attributes->insertAttribute(styleAttribute.release(), false);
66    AtomicHTMLToken fakePre(HTMLToken::StartTag, preTag.localName(), attributes.release());
67
68    treeBuilder()->constructTreeFromAtomicToken(fakePre);
69    m_haveInsertedFakePreElement = true;
70}
71
72}
73