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 "core/html/HTMLTitleElement.h" 25 26 #include "bindings/core/v8/ExceptionStatePlaceholder.h" 27 #include "core/HTMLNames.h" 28 #include "core/dom/ChildListMutationScope.h" 29 #include "core/dom/Document.h" 30 #include "core/dom/Text.h" 31 #include "core/rendering/style/RenderStyle.h" 32 #include "core/rendering/style/StyleInheritedData.h" 33 #include "wtf/text/StringBuilder.h" 34 35 namespace blink { 36 37 using namespace HTMLNames; 38 39 inline HTMLTitleElement::HTMLTitleElement(Document& document) 40 : HTMLElement(titleTag, document) 41 , m_ignoreTitleUpdatesWhenChildrenChange(false) 42 { 43 } 44 45 DEFINE_NODE_FACTORY(HTMLTitleElement) 46 47 Node::InsertionNotificationRequest HTMLTitleElement::insertedInto(ContainerNode* insertionPoint) 48 { 49 HTMLElement::insertedInto(insertionPoint); 50 if (inDocument() && !isInShadowTree()) 51 document().setTitleElement(this); 52 return InsertionDone; 53 } 54 55 void HTMLTitleElement::removedFrom(ContainerNode* insertionPoint) 56 { 57 HTMLElement::removedFrom(insertionPoint); 58 if (insertionPoint->inDocument() && !insertionPoint->isInShadowTree()) 59 document().removeTitle(this); 60 } 61 62 void HTMLTitleElement::childrenChanged(const ChildrenChange& change) 63 { 64 HTMLElement::childrenChanged(change); 65 if (inDocument() && !isInShadowTree() && !m_ignoreTitleUpdatesWhenChildrenChange) 66 document().setTitleElement(this); 67 } 68 69 String HTMLTitleElement::text() const 70 { 71 StringBuilder result; 72 73 for (Node *n = firstChild(); n; n = n->nextSibling()) { 74 if (n->isTextNode()) 75 result.append(toText(n)->data()); 76 } 77 78 return result.toString(); 79 } 80 81 void HTMLTitleElement::setText(const String &value) 82 { 83 RefPtrWillBeRawPtr<Node> protectFromMutationEvents(this); 84 ChildListMutationScope mutation(*this); 85 86 // Avoid calling Document::setTitleElement() during intermediate steps. 87 m_ignoreTitleUpdatesWhenChildrenChange = !value.isEmpty(); 88 removeChildren(); 89 m_ignoreTitleUpdatesWhenChildrenChange = false; 90 91 if (!value.isEmpty()) 92 appendChild(document().createTextNode(value.impl()), IGNORE_EXCEPTION); 93 } 94 95 } 96