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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:52 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:52 -0800 |
commit | 8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2 (patch) | |
tree | 11425ea0b299d6fb89c6d3618a22d97d5bf68d0f /WebCore/dom/NamedAttrMap.cpp | |
parent | 648161bb0edfc3d43db63caed5cc5213bc6cb78f (diff) | |
download | external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.zip external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.tar.gz external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'WebCore/dom/NamedAttrMap.cpp')
-rw-r--r-- | WebCore/dom/NamedAttrMap.cpp | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/WebCore/dom/NamedAttrMap.cpp b/WebCore/dom/NamedAttrMap.cpp new file mode 100644 index 0000000..8944b79 --- /dev/null +++ b/WebCore/dom/NamedAttrMap.cpp @@ -0,0 +1,313 @@ +/* + * Copyright (C) 1999 Lars Knoll (knoll@kde.org) + * (C) 1999 Antti Koivisto (koivisto@kde.org) + * (C) 2001 Peter Kelly (pmk@post.com) + * (C) 2001 Dirk Mueller (mueller@kde.org) + * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. + * (C) 2007 Eric Seidel (eric@webkit.org) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "NamedAttrMap.h" + +#include "Document.h" +#include "Element.h" +#include "ExceptionCode.h" +#include "HTMLNames.h" + +namespace WebCore { + +using namespace HTMLNames; + +static inline bool shouldIgnoreAttributeCase(const Element* e) +{ + return e && e->document()->isHTMLDocument() && e->isHTMLElement(); +} + +NamedAttrMap::~NamedAttrMap() +{ + NamedAttrMap::clearAttributes(); // virtual function, qualify to be explicit and slightly faster +} + +bool NamedAttrMap::isMappedAttributeMap() const +{ + return false; +} + +PassRefPtr<Node> NamedAttrMap::getNamedItem(const String& name) const +{ + Attribute* a = getAttributeItem(name, shouldIgnoreAttributeCase(m_element)); + if (!a) + return 0; + + return a->createAttrIfNeeded(m_element); +} + +PassRefPtr<Node> NamedAttrMap::getNamedItemNS(const String& namespaceURI, const String& localName) const +{ + return getNamedItem(QualifiedName(nullAtom, localName, namespaceURI)); +} + +PassRefPtr<Node> NamedAttrMap::removeNamedItem(const String& name, ExceptionCode& ec) +{ + Attribute* a = getAttributeItem(name, shouldIgnoreAttributeCase(m_element)); + if (!a) { + ec = NOT_FOUND_ERR; + return 0; + } + + return removeNamedItem(a->name(), ec); +} + +PassRefPtr<Node> NamedAttrMap::removeNamedItemNS(const String& namespaceURI, const String& localName, ExceptionCode& ec) +{ + return removeNamedItem(QualifiedName(nullAtom, localName, namespaceURI), ec); +} + +PassRefPtr<Node> NamedAttrMap::getNamedItem(const QualifiedName& name) const +{ + Attribute* a = getAttributeItem(name); + if (!a) + return 0; + + return a->createAttrIfNeeded(m_element); +} + +PassRefPtr<Node> NamedAttrMap::setNamedItem(Node* arg, ExceptionCode& ec) +{ + if (!m_element || !arg) { + ec = NOT_FOUND_ERR; + return 0; + } + + // WRONG_DOCUMENT_ERR: Raised if arg was created from a different document than the one that created this map. + if (arg->document() != m_element->document()) { + ec = WRONG_DOCUMENT_ERR; + return 0; + } + + // Not mentioned in spec: throw a HIERARCHY_REQUEST_ERROR if the user passes in a non-attribute node + if (!arg->isAttributeNode()) { + ec = HIERARCHY_REQUEST_ERR; + return 0; + } + Attr *attr = static_cast<Attr*>(arg); + + Attribute* a = attr->attr(); + Attribute* old = getAttributeItem(a->name()); + if (old == a) + return RefPtr<Node>(arg); // we know about it already + + // INUSE_ATTRIBUTE_ERR: Raised if arg is an Attr that is already an attribute of another Element object. + // The DOM user must explicitly clone Attr nodes to re-use them in other elements. + if (attr->ownerElement()) { + ec = INUSE_ATTRIBUTE_ERR; + return 0; + } + + if (a->name() == idAttr) + m_element->updateId(old ? old->value() : nullAtom, a->value()); + + // ### slightly inefficient - resizes attribute array twice. + RefPtr<Node> r; + if (old) { + r = old->createAttrIfNeeded(m_element); + removeAttribute(a->name()); + } + + addAttribute(a); + return r.release(); +} + +// The DOM2 spec doesn't say that removeAttribute[NS] throws NOT_FOUND_ERR +// if the attribute is not found, but at this level we have to throw NOT_FOUND_ERR +// because of removeNamedItem, removeNamedItemNS, and removeAttributeNode. +PassRefPtr<Node> NamedAttrMap::removeNamedItem(const QualifiedName& name, ExceptionCode& ec) +{ + Attribute* a = getAttributeItem(name); + if (!a) { + ec = NOT_FOUND_ERR; + return 0; + } + + RefPtr<Node> r = a->createAttrIfNeeded(m_element); + + if (name == idAttr) + m_element->updateId(a->value(), nullAtom); + + removeAttribute(name); + return r.release(); +} + +PassRefPtr<Node> NamedAttrMap::item (unsigned index) const +{ + if (index >= length()) + return 0; + + return m_attributes[index]->createAttrIfNeeded(m_element); +} + +// We use a boolean parameter instead of calling shouldIgnoreAttributeCase so that the caller +// can tune the behaviour (hasAttribute is case sensitive whereas getAttribute is not). +Attribute* NamedAttrMap::getAttributeItem(const String& name, bool shouldIgnoreAttributeCase) const +{ + unsigned len = length(); + for (unsigned i = 0; i < len; ++i) { + if (!m_attributes[i]->name().hasPrefix() && + m_attributes[i]->name().localName() == name) + return m_attributes[i].get(); + + if (shouldIgnoreAttributeCase ? equalIgnoringCase(m_attributes[i]->name().toString(), name) : name == m_attributes[i]->name().toString()) + return m_attributes[i].get(); + } + return 0; +} + +Attribute* NamedAttrMap::getAttributeItem(const QualifiedName& name) const +{ + unsigned len = length(); + for (unsigned i = 0; i < len; ++i) { + if (m_attributes[i]->name().matches(name)) + return m_attributes[i].get(); + } + return 0; +} + +void NamedAttrMap::clearAttributes() +{ + unsigned len = length(); + for (unsigned i = 0; i < len; i++) + if (Attr* attr = m_attributes[i]->attr()) + attr->m_element = 0; + + m_attributes.clear(); +} + +void NamedAttrMap::detachFromElement() +{ + // we allow a NamedAttrMap w/o an element in case someone still has a reference + // to if after the element gets deleted - but the map is now invalid + m_element = 0; + clearAttributes(); +} + +void NamedAttrMap::setAttributes(const NamedAttrMap& other) +{ + // clone all attributes in the other map, but attach to our element + if (!m_element) + return; + + // If assigning the map changes the id attribute, we need to call + // updateId. + Attribute *oldId = getAttributeItem(idAttr); + Attribute *newId = other.getAttributeItem(idAttr); + + if (oldId || newId) + m_element->updateId(oldId ? oldId->value() : nullAtom, newId ? newId->value() : nullAtom); + + clearAttributes(); + unsigned newLength = other.length(); + m_attributes.resize(newLength); + for (unsigned i = 0; i < newLength; i++) + m_attributes[i] = other.m_attributes[i]->clone(); + + // FIXME: This is wasteful. The class list could be preserved on a copy, and we + // wouldn't have to waste time reparsing the attribute. + // The derived class, HTMLNamedAttrMap, which manages a parsed class list for the CLASS attribute, + // will update its member variable when parse attribute is called. + for (unsigned i = 0; i < newLength; i++) + m_element->attributeChanged(m_attributes[i].get(), true); +} + +void NamedAttrMap::addAttribute(PassRefPtr<Attribute> prpAttribute) +{ + RefPtr<Attribute> attribute = prpAttribute; + + // Add the attribute to the list + m_attributes.append(attribute); + + if (Attr* attr = attribute->attr()) + attr->m_element = m_element; + + // Notify the element that the attribute has been added, and dispatch appropriate mutation events + // Note that element may be null here if we are called from insertAttr() during parsing + if (m_element) { + m_element->attributeChanged(attribute.get()); + // Because of our updateStyleAttribute() style modification events are never sent at the right time, so don't bother sending them. + if (attribute->name() != styleAttr) { + m_element->dispatchAttrAdditionEvent(attribute.get()); + m_element->dispatchSubtreeModifiedEvent(); + } + } +} + +void NamedAttrMap::removeAttribute(const QualifiedName& name) +{ + unsigned len = length(); + unsigned index = len + 1; + for (unsigned i = 0; i < len; ++i) + if (m_attributes[i]->name().matches(name)) { + index = i; + break; + } + + if (index >= len) + return; + + // Remove the attribute from the list + RefPtr<Attribute> attr = m_attributes[index].get(); + if (Attr* a = m_attributes[index]->attr()) + a->m_element = 0; + + m_attributes.remove(index); + + // Notify the element that the attribute has been removed + // dispatch appropriate mutation events + if (m_element && !attr->m_value.isNull()) { + AtomicString value = attr->m_value; + attr->m_value = nullAtom; + m_element->attributeChanged(attr.get()); + attr->m_value = value; + } + if (m_element) { + m_element->dispatchAttrRemovalEvent(attr.get()); + m_element->dispatchSubtreeModifiedEvent(); + } +} + +bool NamedAttrMap::mapsEquivalent(const NamedAttrMap* otherMap) const +{ + if (!otherMap) + return false; + + unsigned len = length(); + if (len != otherMap->length()) + return false; + + for (unsigned i = 0; i < len; i++) { + Attribute *attr = attributeItem(i); + Attribute *otherAttr = otherMap->getAttributeItem(attr->name()); + + if (!otherAttr || attr->value() != otherAttr->value()) + return false; + } + + return true; +} + +} |