33dadb9240
r=Pike sr=jst git-svn-id: svn://10.0.0.236/trunk@107785 18797224-902f-48f8-a5cc-f745e15eee43
296 lines
8.7 KiB
C++
296 lines
8.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* (C) Copyright The MITRE Corporation 1999 All rights reserved.
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with 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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* The program provided "as is" without any warranty express or
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* implied, including the warranty of non-infringement and the implied
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* warranties of merchantibility and fitness for a particular purpose.
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* The Copyright owner will not be liable for any damages suffered by
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* you as a result of using the Program. In no event will the Copyright
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* owner be liable for any special, indirect or consequential damages or
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* lost profits even if the Copyright owner has been advised of the
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* possibility of their occurrence.
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*
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* Please see release.txt distributed with this file for more information.
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*
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* Contributor(s): Tom Kneeland
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* Peter Van der Beken <peter.vanderbeken@pandora.be>
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*
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*/
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/*
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* Implementation of the wrapper class to convert the Mozilla nsIDOMElement
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* interface into a TransforMiiX Element interface.
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*/
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#include "mozilladom.h"
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#include "nsIContent.h"
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/*
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* Construct a wrapper with the specified Mozilla object and document owner.
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*
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* @param aElement the nsIDOMElement you want to wrap
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* @param aOwner the document that owns this object
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*/
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Element::Element(nsIDOMElement* aElement, Document* aOwner) :
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Node(aElement, aOwner)
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{
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nsCOMPtr<nsIContent> cont(do_QueryInterface(aElement));
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NS_ASSERTION(cont, "Element doesn't implement nsIContent");
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if (cont)
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cont->GetNameSpaceID(namespaceID);
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}
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/*
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* Destructor
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*/
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Element::~Element()
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{
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}
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/*
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* Call nsIDOMElement::GetTagName to retrieve the tag name for this element.
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*
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* @return the element's tag name
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*/
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const String& Element::getTagName()
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{
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NSI_FROM_TX(Element)
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nodeName.clear();
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if (nsElement)
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nsElement->GetTagName(nodeName.getNSString());
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return nodeName;
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}
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/*
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* Get the attribute node for the specified name and return it's value or the
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* null string if the attribute node doesn't exist.
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*
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* @param aName the name of the attribute whose value you want
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*
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* @return the attribute node's value or null string
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*/
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const String& Element::getAttribute(const String& aName)
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{
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Node* tempNode = getAttributeNode(aName);
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if (tempNode)
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return tempNode->getNodeValue();
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return NULL_STRING;
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}
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/*
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* Call nsIDOMElement::SetAttribute to set an attribute to the specified value.
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*
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* @param aName the name of the attribute you want to set
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* @param aValue the value you want to set the attribute to
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*/
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void Element::setAttribute(const String& aName, const String& aValue)
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{
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NSI_FROM_TX(Element)
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if (nsElement)
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nsElement->SetAttribute(aName.getConstNSString(), aValue.getConstNSString());
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}
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/*
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* Call nsIDOMElement::SetAttributeNS to set an attribute to the specified
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* value.
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*
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* @param aNamespaceURI the URI of the namespace of the attribute
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* @param aName the name of the attribute you want to set
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* @param aValue the value you want to set the attribute to
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*/
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void Element::setAttributeNS(const String& aNamespaceURI, const String& aName,
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const String& aValue)
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{
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NSI_FROM_TX(Element)
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if (nsElement)
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nsElement->SetAttributeNS(aNamespaceURI.getConstNSString(),
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aName.getConstNSString(),
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aValue.getConstNSString());
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}
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/*
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* Call nsIDOMElement::RemoveAttribute to remove an attribute. We need to make
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* this call a bit more complicated than usual because we want to make sure
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* we remove the attribute wrapper from the document's wrapper hash table.
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*
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* @param aName the name of the attribute you want to remove
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*/
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void Element::removeAttribute(const String& aName)
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{
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NSI_FROM_TX(Element)
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if (nsElement) {
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nsCOMPtr<nsIDOMAttr> attr;
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Attr* attrWrapper = NULL;
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// First, get the nsIDOMAttr object from the nsIDOMElement object
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nsElement->GetAttributeNode(aName.getConstNSString(), getter_AddRefs(attr));
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// Second, remove the attribute wrapper object from the hash table if it is
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// there. It might not be if the attribute was created using
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// Element::setAttribute. If it was removed, then delete it.
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attrWrapper = (Attr*)ownerDocument->removeWrapper(attr);
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if (attrWrapper)
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delete attrWrapper;
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// Lastly, have the Mozilla object remove the attribute
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nsElement->RemoveAttribute(aName.getConstNSString());
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}
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}
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/*
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* Call nsIDOMElement::GetAttributeNode to get an nsIDOMAttr. If successful,
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* refer to the owner document for an attribute wrapper.
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*
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* @param aName the name of the attribute node you want to get
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*
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* @return the attribute node's value or null string
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*/
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Attr* Element::getAttributeNode(const String& aName)
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{
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NSI_FROM_TX_NULL_CHECK(Element)
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nsCOMPtr<nsIDOMAttr> attr;
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if (NS_SUCCEEDED(nsElement->GetAttributeNode(aName.getConstNSString(),
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getter_AddRefs(attr))) && attr)
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return (Attr*)ownerDocument->createWrapper(attr);
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return NULL;
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}
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/*
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* Call nsIContent::GetAttr for the localname and nsID.
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*/
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MBool Element::getAttr(txAtom* aLocalName, PRInt32 aNSID,
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String& aValue)
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{
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aValue.clear();
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nsCOMPtr<nsIContent> cont(do_QueryInterface(nsObject));
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NS_ASSERTION(cont, "Element doesn't implement nsIContent");
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if (!cont)
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return MB_FALSE;
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nsresult rv;
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rv = cont->GetAttr(aNSID, aLocalName, aValue.getNSString());
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NS_ENSURE_SUCCESS(rv, MB_FALSE);
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if (rv != NS_CONTENT_ATTR_NOT_THERE)
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return MB_TRUE;
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return MB_FALSE;
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}
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/*
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* Call nsIContent::GetAttr for the localname and nsID.
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*/
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MBool Element::hasAttr(txAtom* aLocalName, PRInt32 aNSID)
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{
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nsCOMPtr<nsIContent> cont(do_QueryInterface(nsObject));
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NS_ASSERTION(cont, "Element doesn't implement nsIContent");
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if (!cont)
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return MB_FALSE;
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nsresult rv;
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nsAutoString tmp;
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rv = cont->GetAttr(aNSID, aLocalName, tmp);
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NS_ENSURE_SUCCESS(rv, MB_FALSE);
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return rv != NS_CONTENT_ATTR_NOT_THERE;
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}
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/*
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* Call nsIDOMElement::SetAttributeNode passing it the nsIDOMAttr object wrapped
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* by the aNewAttr parameter.
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*
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* @param aNewAttr the wrapper of the new attribute node
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*
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* @return the attribute node's value or null string
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*/
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Attr* Element::setAttributeNode(Attr* aNewAttr)
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{
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NSI_FROM_TX_NULL_CHECK(Element)
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nsCOMPtr<nsIDOMAttr> newAttr(do_QueryInterface(GET_NSOBJ(aNewAttr)));
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nsCOMPtr<nsIDOMAttr> returnAttr;
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if (NS_SUCCEEDED(nsElement->SetAttributeNode(newAttr,
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getter_AddRefs(returnAttr))))
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return (Attr*)ownerDocument->createWrapper(returnAttr);
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return NULL;
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}
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/*
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* Call nsIDOMElement::RemoveAttributeNode, then refer to the owner document to
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* remove it from its hash table. The caller is then responsible for destroying
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* the wrapper.
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*
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* @param aOldAttr the wrapper of attribute node you want to remove
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*
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* @return the attribute node's value or null string
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*/
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Attr* Element::removeAttributeNode(Attr* aOldAttr)
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{
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NSI_FROM_TX_NULL_CHECK(Element)
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nsCOMPtr<nsIDOMAttr> oldAttr(do_QueryInterface(GET_NSOBJ(aOldAttr)));
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nsCOMPtr<nsIDOMAttr> removedAttr;
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Attr* attrWrapper = NULL;
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if (NS_SUCCEEDED(nsElement->RemoveAttributeNode(oldAttr,
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getter_AddRefs(removedAttr)))) {
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attrWrapper = (Attr*)ownerDocument->removeWrapper(aOldAttr);
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if (!attrWrapper)
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attrWrapper = new Attr(removedAttr, ownerDocument);
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return attrWrapper;
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}
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return NULL;
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}
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/*
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* Call nsIDOMElement::GetElementsByTagName. If successful, refer to the owner
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* document for a Nodelist wrapper.
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*
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* @param aName the name of the elements you want to get
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*
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* @return the nodelist containing the returned elements
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*/
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NodeList* Element::getElementsByTagName(const String& aName)
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{
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NSI_FROM_TX_NULL_CHECK(Element)
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nsCOMPtr<nsIDOMNodeList> list;
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if (NS_SUCCEEDED(nsElement->GetElementsByTagName(aName.getConstNSString(),
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getter_AddRefs(list))))
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return ownerDocument->createNodeList(list);
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return NULL;
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}
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/*
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* Simply call nsIDOMElement::Normalize().
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*/
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void Element::normalize()
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{
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NSI_FROM_TX(Element)
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if (nsElement)
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nsElement->Normalize();
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}
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/*
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* Returns the local name atomized
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*
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* @return the node's localname atom
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*/
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MBool Element::getLocalName(txAtom** aLocalName)
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{
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NS_ENSURE_TRUE(aLocalName, MB_FALSE);
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nsCOMPtr<nsIContent> cont(do_QueryInterface(nsObject));
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NS_ASSERTION(cont, "Element doesn't implement nsIContent");
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if (!cont)
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return MB_FALSE;
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cont->GetTag(*aLocalName);
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return MB_TRUE;
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}
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