mirror of
https://github.com/rn10950/RetroZilla.git
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292 lines
8.3 KiB
C++
292 lines
8.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is TransforMiiX XSLT processor code.
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*
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* The Initial Developer of the Original Code is
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* The MITRE Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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// Tom Kneeland (3/29/99)
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//
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// Implementation of the Document Object Model Level 1 Core
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// Implementation of the Element class
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//
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#include "dom.h"
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#include "txAtoms.h"
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#include "XMLUtils.h"
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//
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//Construct a new element with the specified tagName and Document owner.
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//Simply call the constructor for NodeDefinition, and specify the proper node
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//type.
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//
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Element::Element(const nsAString& tagName, Document* owner) :
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NodeDefinition(Node::ELEMENT_NODE, tagName, EmptyString(), owner)
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{
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mAttributes.ownerElement = this;
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mNamespaceID = kNameSpaceID_Unknown;
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int idx = tagName.FindChar(':');
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if (idx == kNotFound) {
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mLocalName = do_GetAtom(tagName);
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}
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else {
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mLocalName = do_GetAtom(Substring(tagName, idx + 1,
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tagName.Length() - (idx + 1)));
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}
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}
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Element::Element(const nsAString& aNamespaceURI,
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const nsAString& aTagName,
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Document* aOwner) :
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NodeDefinition(Node::ELEMENT_NODE, aTagName, EmptyString(), aOwner)
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{
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Element(aTagName, aOwner);
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if (aNamespaceURI.IsEmpty())
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mNamespaceID = kNameSpaceID_None;
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else
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mNamespaceID = txStandaloneNamespaceManager::getNamespaceID(aNamespaceURI);
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}
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//
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// This element is being destroyed, so destroy all attributes stored
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// in the mAttributes NamedNodeMap.
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//
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Element::~Element()
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{
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mAttributes.clear();
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}
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Node* Element::appendChild(Node* newChild)
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{
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switch (newChild->getNodeType())
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{
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case Node::ELEMENT_NODE :
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case Node::TEXT_NODE :
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case Node::COMMENT_NODE :
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case Node::PROCESSING_INSTRUCTION_NODE :
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{
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// Remove the "newChild" if it is already a child of this node
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NodeDefinition* pNewChild = (NodeDefinition*)newChild;
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if (pNewChild->getParentNode() == this)
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pNewChild = implRemoveChild(pNewChild);
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return implAppendChild(pNewChild);
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}
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default:
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break;
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}
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return nsnull;
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}
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//
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//Return the elements local (unprefixed) name.
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//
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MBool Element::getLocalName(nsIAtom** aLocalName)
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{
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if (!aLocalName)
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return MB_FALSE;
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*aLocalName = mLocalName;
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NS_ADDREF(*aLocalName);
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return MB_TRUE;
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}
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//
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//Return the namespace the elements belongs to.
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//
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PRInt32 Element::getNamespaceID()
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{
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if (mNamespaceID>=0)
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return mNamespaceID;
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int idx = nodeName.FindChar(':');
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if (idx == kNotFound) {
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Node* node = this;
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while (node && node->getNodeType() == Node::ELEMENT_NODE) {
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nsAutoString nsURI;
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if (((Element*)node)->getAttr(txXMLAtoms::xmlns, kNameSpaceID_XMLNS,
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nsURI)) {
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// xmlns = "" sets the default namespace ID to kNameSpaceID_None;
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if (!nsURI.IsEmpty()) {
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mNamespaceID = txStandaloneNamespaceManager::getNamespaceID(nsURI);
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}
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else {
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mNamespaceID = kNameSpaceID_None;
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}
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return mNamespaceID;
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}
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node = node->getParentNode();
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}
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mNamespaceID = kNameSpaceID_None;
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}
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else {
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nsCOMPtr<nsIAtom> prefix = do_GetAtom(Substring(nodeName, 0, idx));
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mNamespaceID = lookupNamespaceID(prefix);
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}
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return mNamespaceID;
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}
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NamedNodeMap* Element::getAttributes()
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{
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return &mAttributes;
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}
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//
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//Add an attribute to this Element. Create a new Attr object using the
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//name and value specified. Then add the Attr to the the Element's
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//mAttributes NamedNodeMap.
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//
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void Element::setAttribute(const nsAString& name, const nsAString& value)
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{
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// Check to see if an attribute with this name already exists. If it does
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// overwrite its value, if not, add it.
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Attr* tempAttribute = getAttributeNode(name);
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if (tempAttribute) {
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tempAttribute->setNodeValue(value);
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}
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else {
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tempAttribute = getOwnerDocument()->createAttribute(name);
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tempAttribute->setNodeValue(value);
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tempAttribute->ownerElement = this;
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mAttributes.append(tempAttribute);
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}
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}
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void Element::setAttributeNS(const nsAString& aNamespaceURI,
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const nsAString& aName,
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const nsAString& aValue)
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{
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// Check to see if an attribute with this name already exists. If it does
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// overwrite its value, if not, add it.
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PRInt32 namespaceID =
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txStandaloneNamespaceManager::getNamespaceID(aNamespaceURI);
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nsCOMPtr<nsIAtom> localName = do_GetAtom(XMLUtils::getLocalPart(aName));
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Attr* foundNode = 0;
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AttrMap::ListItem* item = mAttributes.firstItem;
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while (item) {
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foundNode = (Attr*)item->node;
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nsCOMPtr<nsIAtom> attrName;
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if (foundNode->getLocalName(getter_AddRefs(attrName)) &&
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namespaceID == foundNode->getNamespaceID() &&
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localName == attrName) {
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break;
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}
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foundNode = 0;
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item = item->next;
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}
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if (foundNode) {
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foundNode->setNodeValue(aValue);
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}
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else {
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Attr* temp = getOwnerDocument()->createAttributeNS(aNamespaceURI,
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aName);
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temp->setNodeValue(aValue);
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temp->ownerElement = this;
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mAttributes.append(temp);
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}
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}
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//
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//Return the attribute specified by name
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//
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Attr* Element::getAttributeNode(const nsAString& name)
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{
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return (Attr*)mAttributes.getNamedItem(name);
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}
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//
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// Return true if the attribute specified by localname and nsID
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// exists, and sets aValue to the value of the attribute.
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// Return false, if the attribute does not exist.
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//
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MBool Element::getAttr(nsIAtom* aLocalName, PRInt32 aNSID,
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nsAString& aValue)
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{
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aValue.Truncate();
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AttrMap::ListItem* item = mAttributes.firstItem;
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while (item) {
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Attr* attrNode = (Attr*)item->node;
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nsCOMPtr<nsIAtom> localName;
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if (attrNode->getLocalName(getter_AddRefs(localName)) &&
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aNSID == attrNode->getNamespaceID() &&
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aLocalName == localName) {
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attrNode->getNodeValue(aValue);
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return MB_TRUE;
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}
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item = item->next;
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}
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return MB_FALSE;
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}
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//
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// Return true if the attribute specified by localname and nsID
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// exists. Return false otherwise.
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//
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MBool Element::hasAttr(nsIAtom* aLocalName, PRInt32 aNSID)
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{
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AttrMap::ListItem* item = mAttributes.firstItem;
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while (item) {
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Attr* attrNode = (Attr*)item->node;
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nsCOMPtr<nsIAtom> localName;
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if (attrNode->getLocalName(getter_AddRefs(localName)) &&
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aNSID == attrNode->getNamespaceID() &&
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aLocalName == localName) {
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return MB_TRUE;
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}
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item = item->next;
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}
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return MB_FALSE;
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}
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/**
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* ID accessors. Getter used for id() patterns, private setter for parser
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*/
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PRBool
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Element::getIDValue(nsAString& aValue)
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{
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if (mIDValue.IsEmpty()) {
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return PR_FALSE;
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}
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aValue = mIDValue;
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return PR_TRUE;
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}
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void
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Element::setIDValue(const nsAString& aValue)
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{
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mIDValue = aValue;
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}
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