Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| 3 | * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| 4 | * (C) 2001 Peter Kelly (pmk@post.com) |
| 5 | * (C) 2001 Dirk Mueller (mueller@kde.org) |
| 6 | * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2012 Apple Inc. All rights reserved. |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Library General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Library General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Library General Public License |
| 19 | * along with this library; see the file COPYING.LIB. If not, write to |
| 20 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 21 | * Boston, MA 02110-1301, USA. |
| 22 | */ |
| 23 | #include "config.h" |
| 24 | #include "core/dom/Attr.h" |
| 25 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 26 | #include "XMLNSNames.h" |
Ben Murdoch | df95704 | 2013-08-06 11:01:27 +0100 | [diff] [blame] | 27 | #include "bindings/v8/ExceptionState.h" |
| 28 | #include "bindings/v8/ExceptionStatePlaceholder.h" |
Ben Murdoch | 591b958 | 2013-07-10 11:41:44 +0100 | [diff] [blame] | 29 | #include "core/dom/Element.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 30 | #include "core/dom/ExceptionCode.h" |
| 31 | #include "core/dom/ScopedEventQueue.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 32 | #include "core/dom/Text.h" |
Ben Murdoch | 591b958 | 2013-07-10 11:41:44 +0100 | [diff] [blame] | 33 | #include "wtf/text/AtomicString.h" |
| 34 | #include "wtf/text/StringBuilder.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 35 | |
| 36 | namespace WebCore { |
| 37 | |
| 38 | using namespace HTMLNames; |
| 39 | |
| 40 | Attr::Attr(Element* element, const QualifiedName& name) |
| 41 | : ContainerNode(element->document()) |
| 42 | , m_element(element) |
| 43 | , m_name(name) |
| 44 | , m_ignoreChildrenChanged(0) |
| 45 | , m_specified(true) |
| 46 | { |
| 47 | ScriptWrappable::init(this); |
| 48 | } |
| 49 | |
| 50 | Attr::Attr(Document* document, const QualifiedName& name, const AtomicString& standaloneValue) |
| 51 | : ContainerNode(document) |
| 52 | , m_element(0) |
| 53 | , m_name(name) |
| 54 | , m_standaloneValue(standaloneValue) |
| 55 | , m_ignoreChildrenChanged(0) |
| 56 | , m_specified(true) |
| 57 | { |
| 58 | ScriptWrappable::init(this); |
| 59 | } |
| 60 | |
| 61 | PassRefPtr<Attr> Attr::create(Element* element, const QualifiedName& name) |
| 62 | { |
| 63 | RefPtr<Attr> attr = adoptRef(new Attr(element, name)); |
| 64 | attr->createTextChild(); |
| 65 | return attr.release(); |
| 66 | } |
| 67 | |
| 68 | PassRefPtr<Attr> Attr::create(Document* document, const QualifiedName& name, const AtomicString& value) |
| 69 | { |
| 70 | RefPtr<Attr> attr = adoptRef(new Attr(document, name, value)); |
| 71 | attr->createTextChild(); |
| 72 | return attr.release(); |
| 73 | } |
| 74 | |
| 75 | Attr::~Attr() |
| 76 | { |
| 77 | } |
| 78 | |
| 79 | void Attr::createTextChild() |
| 80 | { |
| 81 | ASSERT(refCount()); |
| 82 | if (!value().isEmpty()) { |
| 83 | RefPtr<Text> textNode = document()->createTextNode(value().string()); |
| 84 | |
| 85 | // This does everything appendChild() would do in this situation (assuming m_ignoreChildrenChanged was set), |
| 86 | // but much more efficiently. |
| 87 | textNode->setParentOrShadowHostNode(this); |
Torne (Richard Coles) | e524955 | 2013-05-15 11:35:13 +0100 | [diff] [blame] | 88 | treeScope()->adoptIfNeeded(textNode.get()); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 89 | setFirstChild(textNode.get()); |
| 90 | setLastChild(textNode.get()); |
| 91 | } |
| 92 | } |
| 93 | |
Ben Murdoch | df95704 | 2013-08-06 11:01:27 +0100 | [diff] [blame] | 94 | void Attr::setPrefix(const AtomicString& prefix, ExceptionState& es) |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 95 | { |
Ben Murdoch | df95704 | 2013-08-06 11:01:27 +0100 | [diff] [blame] | 96 | checkSetPrefix(prefix, es); |
| 97 | if (es.hadException()) |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 98 | return; |
| 99 | |
| 100 | if ((prefix == xmlnsAtom && namespaceURI() != XMLNSNames::xmlnsNamespaceURI) |
| 101 | || static_cast<Attr*>(this)->qualifiedName() == xmlnsAtom) { |
Ben Murdoch | df95704 | 2013-08-06 11:01:27 +0100 | [diff] [blame] | 102 | es.throwDOMException(NamespaceError); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 103 | return; |
| 104 | } |
| 105 | |
| 106 | const AtomicString& newPrefix = prefix.isEmpty() ? nullAtom : prefix; |
| 107 | |
| 108 | if (m_element) |
| 109 | elementAttribute().setPrefix(newPrefix); |
| 110 | m_name.setPrefix(newPrefix); |
| 111 | } |
| 112 | |
| 113 | void Attr::setValue(const AtomicString& value) |
| 114 | { |
| 115 | EventQueueScope scope; |
| 116 | m_ignoreChildrenChanged++; |
| 117 | removeChildren(); |
| 118 | if (m_element) |
| 119 | elementAttribute().setValue(value); |
| 120 | else |
| 121 | m_standaloneValue = value; |
| 122 | createTextChild(); |
| 123 | m_ignoreChildrenChanged--; |
| 124 | |
| 125 | invalidateNodeListCachesInAncestors(&m_name, m_element); |
| 126 | } |
| 127 | |
Ben Murdoch | df95704 | 2013-08-06 11:01:27 +0100 | [diff] [blame] | 128 | void Attr::setValue(const AtomicString& value, ExceptionState&) |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 129 | { |
| 130 | if (m_element) |
| 131 | m_element->willModifyAttribute(qualifiedName(), this->value(), value); |
| 132 | |
| 133 | setValue(value); |
| 134 | |
| 135 | if (m_element) |
| 136 | m_element->didModifyAttribute(qualifiedName(), value); |
| 137 | } |
| 138 | |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 139 | void Attr::setNodeValue(const String& v) |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 140 | { |
Ben Murdoch | 1fad5ca | 2013-08-07 11:05:11 +0100 | [diff] [blame] | 141 | setValue(v, IGNORE_EXCEPTION); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | PassRefPtr<Node> Attr::cloneNode(bool /*deep*/) |
| 145 | { |
| 146 | RefPtr<Attr> clone = adoptRef(new Attr(document(), qualifiedName(), value())); |
| 147 | cloneChildNodes(clone.get()); |
| 148 | return clone.release(); |
| 149 | } |
| 150 | |
| 151 | // DOM Section 1.1.1 |
| 152 | bool Attr::childTypeAllowed(NodeType type) const |
| 153 | { |
Torne (Richard Coles) | 81a5157 | 2013-05-13 16:52:28 +0100 | [diff] [blame] | 154 | return TEXT_NODE == type; |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | void Attr::childrenChanged(bool, Node*, Node*, int) |
| 158 | { |
| 159 | if (m_ignoreChildrenChanged > 0) |
| 160 | return; |
| 161 | |
| 162 | invalidateNodeListCachesInAncestors(&qualifiedName(), m_element); |
| 163 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 164 | StringBuilder valueBuilder; |
| 165 | for (Node *n = firstChild(); n; n = n->nextSibling()) { |
| 166 | if (n->isTextNode()) |
| 167 | valueBuilder.append(toText(n)->data()); |
| 168 | } |
| 169 | |
| 170 | AtomicString newValue = valueBuilder.toAtomicString(); |
| 171 | if (m_element) |
| 172 | m_element->willModifyAttribute(qualifiedName(), value(), newValue); |
| 173 | |
| 174 | if (m_element) |
| 175 | elementAttribute().setValue(newValue); |
| 176 | else |
| 177 | m_standaloneValue = newValue; |
| 178 | |
| 179 | if (m_element) |
| 180 | m_element->attributeChanged(qualifiedName(), newValue); |
| 181 | } |
| 182 | |
| 183 | bool Attr::isId() const |
| 184 | { |
| 185 | return qualifiedName().matches(document()->idAttributeName()); |
| 186 | } |
| 187 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 188 | const AtomicString& Attr::value() const |
| 189 | { |
| 190 | if (m_element) |
| 191 | return m_element->getAttribute(qualifiedName()); |
| 192 | return m_standaloneValue; |
| 193 | } |
| 194 | |
| 195 | Attribute& Attr::elementAttribute() |
| 196 | { |
| 197 | ASSERT(m_element); |
| 198 | ASSERT(m_element->elementData()); |
| 199 | return *m_element->ensureUniqueElementData()->getAttributeItem(qualifiedName()); |
| 200 | } |
| 201 | |
| 202 | void Attr::detachFromElementWithValue(const AtomicString& value) |
| 203 | { |
| 204 | ASSERT(m_element); |
| 205 | ASSERT(m_standaloneValue.isNull()); |
| 206 | m_standaloneValue = value; |
| 207 | m_element = 0; |
| 208 | } |
| 209 | |
| 210 | void Attr::attachToElement(Element* element) |
| 211 | { |
| 212 | ASSERT(!m_element); |
| 213 | m_element = element; |
| 214 | m_standaloneValue = nullAtom; |
| 215 | } |
| 216 | |
| 217 | } |