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 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 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 "HTMLTreeBuilder.h" 30 31namespace WebCore { 32 33using namespace HTMLNames; 34 35TextDocumentParser::TextDocumentParser(HTMLDocument& document) 36 : HTMLDocumentParser(document) 37 , m_haveInsertedFakePreElement(false) 38{ 39} 40 41TextDocumentParser::~TextDocumentParser() 42{ 43} 44 45void TextDocumentParser::append(PassRefPtr<StringImpl> text) 46{ 47 if (!m_haveInsertedFakePreElement) 48 insertFakePreElement(); 49 HTMLDocumentParser::append(text); 50} 51 52void TextDocumentParser::insertFakePreElement() 53{ 54 // In principle, we should create a specialized tree builder for 55 // TextDocuments, but instead we re-use the existing HTMLTreeBuilder. 56 // We create a fake token and give it to the tree builder rather than 57 // sending fake bytes through the front-end of the parser to avoid 58 // distrubing the line/column number calculations. 59 Vector<Attribute> attributes; 60 attributes.append(Attribute(styleAttr, "word-wrap: break-word; white-space: pre-wrap;")); 61 AtomicHTMLToken fakePre(HTMLToken::StartTag, preTag.localName(), attributes); 62 treeBuilder()->constructTree(&fakePre); 63 64 // Normally we would skip the first \n after a <pre> element, but we don't 65 // want to skip the first \n for text documents! 66 treeBuilder()->setShouldSkipLeadingNewline(false); 67 68 // Although Text Documents expose a "pre" element in their DOM, they 69 // act like a <plaintext> tag, so we have to force plaintext mode. 70 forcePlaintextForTextDocument(); 71 72 m_haveInsertedFakePreElement = true; 73} 74 75} 76