1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 1999 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2001 Dirk Mueller (mueller (at) kde.org) 5 * Copyright (C) 2003, 2010 Apple Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 */ 22 23 #include "config.h" 24 #include "HTMLTitleElement.h" 25 26 #include "Document.h" 27 #include "HTMLNames.h" 28 #include "RenderStyle.h" 29 #include "Text.h" 30 31 namespace WebCore { 32 33 using namespace HTMLNames; 34 35 inline HTMLTitleElement::HTMLTitleElement(const QualifiedName& tagName, Document* document) 36 : HTMLElement(tagName, document) 37 { 38 ASSERT(hasTagName(titleTag)); 39 } 40 41 PassRefPtr<HTMLTitleElement> HTMLTitleElement::create(const QualifiedName& tagName, Document* document) 42 { 43 return adoptRef(new HTMLTitleElement(tagName, document)); 44 } 45 46 void HTMLTitleElement::insertedIntoDocument() 47 { 48 HTMLElement::insertedIntoDocument(); 49 document()->setTitleElement(m_title, this); 50 } 51 52 void HTMLTitleElement::removedFromDocument() 53 { 54 HTMLElement::removedFromDocument(); 55 document()->removeTitle(this); 56 } 57 58 void HTMLTitleElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta) 59 { 60 m_title = textWithDirection(); 61 if (inDocument()) 62 document()->setTitleElement(m_title, this); 63 HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta); 64 } 65 66 String HTMLTitleElement::text() const 67 { 68 String val = ""; 69 70 for (Node *n = firstChild(); n; n = n->nextSibling()) { 71 if (n->isTextNode()) 72 val += static_cast<Text*>(n)->data(); 73 } 74 75 return val; 76 } 77 78 StringWithDirection HTMLTitleElement::textWithDirection() 79 { 80 TextDirection direction = LTR; 81 if (RenderStyle* style = computedStyle()) 82 direction = style->direction(); 83 else if (RefPtr<RenderStyle> style = styleForRenderer()) 84 direction = style->direction(); 85 return StringWithDirection(text(), direction); 86 } 87 88 void HTMLTitleElement::setText(const String &value) 89 { 90 ExceptionCode ec = 0; 91 int numChildren = childNodeCount(); 92 93 if (numChildren == 1 && firstChild()->isTextNode()) 94 static_cast<Text*>(firstChild())->setData(value, ec); 95 else { 96 // We make a copy here because entity of "value" argument can be Document::m_title, 97 // which goes empty during removeChildren() invocation below, 98 // which causes HTMLTitleElement::childrenChanged(), which ends up Document::setTitle(). 99 String valueCopy(value); 100 101 if (numChildren > 0) 102 removeChildren(); 103 104 appendChild(document()->createTextNode(valueCopy.impl()), ec); 105 } 106 } 107 108 } 109