mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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247 lines
7.0 KiB
C++
247 lines
7.0 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 the Mozilla XTF project.
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*
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* The Initial Developer of the Original Code is
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* Alex Fritze.
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* Portions created by the Initial Developer are Copyright (C) 2004
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Alex Fritze <alex@croczilla.com> (original author)
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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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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsIXMLContentBuilder.h"
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#include "nsINameSpaceManager.h"
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#include "nsINodeInfo.h"
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#include "nsIContent.h"
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "nsIAtom.h"
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#include "nsContentCID.h"
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#include "nsIDocument.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMText.h"
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#include "nsNodeInfoManager.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsContentUtils.h"
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static NS_DEFINE_CID(kXMLDocumentCID, NS_XMLDOCUMENT_CID);
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class nsXMLContentBuilder : public nsIXMLContentBuilder
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{
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protected:
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friend nsresult NS_NewXMLContentBuilder(nsIXMLContentBuilder** aResult);
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nsXMLContentBuilder();
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~nsXMLContentBuilder();
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public:
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// nsISupports interface
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NS_DECL_ISUPPORTS
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// nsIXMLContentBuilder interface
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NS_DECL_NSIXMLCONTENTBUILDER
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private:
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void EnsureDoc();
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nsCOMPtr<nsIContent> mTop;
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nsCOMPtr<nsIContent> mCurrent;
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nsCOMPtr<nsIDocument> mDocument;
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PRInt32 mNamespaceId;
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};
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//----------------------------------------------------------------------
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// implementation:
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nsXMLContentBuilder::nsXMLContentBuilder()
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: mNamespaceId(kNameSpaceID_None)
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{
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#ifdef DEBUG
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// printf("nsXMLContentBuilder CTOR\n");
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#endif
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}
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nsXMLContentBuilder::~nsXMLContentBuilder()
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{
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#ifdef DEBUG
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// printf("~nsXMLContentBuilder\n");
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#endif
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}
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nsresult
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NS_NewXMLContentBuilder(nsIXMLContentBuilder** aResult)
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{
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nsXMLContentBuilder* result = new nsXMLContentBuilder();
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if (! result)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(result);
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*aResult = result;
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return NS_OK;
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}
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//----------------------------------------------------------------------
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// nsISupports methods
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NS_IMPL_ISUPPORTS1(nsXMLContentBuilder, nsIXMLContentBuilder)
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//----------------------------------------------------------------------
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// nsIXMLContentBuilder implementation
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/* void clear (in nsIDOMElement root); */
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NS_IMETHODIMP nsXMLContentBuilder::Clear(nsIDOMElement *root)
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{
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mCurrent = do_QueryInterface(root);
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mTop = do_QueryInterface(root);
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if (mNamespaceId != kNameSpaceID_None) {
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mNamespaceId = kNameSpaceID_None;
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}
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return NS_OK;
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}
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/* void setDocument (in nsIDOMDocument doc); */
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NS_IMETHODIMP nsXMLContentBuilder::SetDocument(nsIDOMDocument *doc)
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{
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mDocument = do_QueryInterface(doc);
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#ifdef DEBUG
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if (!mDocument)
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NS_WARNING("null document in nsXMLContentBuilder::SetDocument");
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#endif
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return NS_OK;
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}
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/* void setElementNamespace (in AString ns); */
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NS_IMETHODIMP nsXMLContentBuilder::SetElementNamespace(const nsAString & ns)
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{
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nsContentUtils::NameSpaceManager()->RegisterNameSpace(ns, mNamespaceId);
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return NS_OK;
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}
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/* void beginElement (in AString tagname); */
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NS_IMETHODIMP nsXMLContentBuilder::BeginElement(const nsAString & tagname)
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{
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nsCOMPtr<nsIContent> node;
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{
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EnsureDoc();
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nsCOMPtr<nsIAtom> nameAtom = do_GetAtom(tagname);
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mDocument->CreateElem(nameAtom, nsnull, mNamespaceId, PR_FALSE, getter_AddRefs(node));
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}
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if (!node) {
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NS_ERROR("could not create node");
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return NS_ERROR_FAILURE;
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}
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// ok, we created a content element. now either append it to our
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// top-level array or to the current element.
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if (!mCurrent) {
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if (mTop) {
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NS_ERROR("Building of multi-rooted trees not supported");
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return NS_ERROR_FAILURE;
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}
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mTop = node;
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mCurrent = mTop;
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}
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else {
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mCurrent->AppendChildTo(node, PR_TRUE);
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mCurrent = node;
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}
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return NS_OK;
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}
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/* void endElement (); */
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NS_IMETHODIMP nsXMLContentBuilder::EndElement()
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{
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NS_ASSERTION(mCurrent, "unbalanced begin/endelement");
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mCurrent = mCurrent->GetParent();
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return NS_OK;
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}
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/* void attrib (in AString name, in AString value); */
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NS_IMETHODIMP nsXMLContentBuilder::Attrib(const nsAString & name, const nsAString & value)
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{
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NS_ASSERTION(mCurrent, "can't set attrib w/o open element");
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nsCOMPtr<nsIAtom> nameAtom = do_GetAtom(name);
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mCurrent->SetAttr(0, nameAtom, value, PR_TRUE);
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return NS_OK;
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}
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/* void textNode (in AString text); */
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NS_IMETHODIMP nsXMLContentBuilder::TextNode(const nsAString & text)
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{
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EnsureDoc();
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NS_ASSERTION(mCurrent, "can't append textnode w/o open element");
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nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(mDocument);
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NS_ASSERTION(domDoc, "no dom document");
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nsCOMPtr<nsIDOMText> textNode;
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domDoc->CreateTextNode(text, getter_AddRefs(textNode));
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NS_ASSERTION(textNode, "Failed to create text node");
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nsCOMPtr<nsIContent> textContent = do_QueryInterface(textNode);
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mCurrent->AppendChildTo(textContent, PR_TRUE);
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return NS_OK;
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}
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/* readonly attribute nsIDOMElement root; */
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NS_IMETHODIMP nsXMLContentBuilder::GetRoot(nsIDOMElement * *aRoot)
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{
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if (!mTop) {
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*aRoot = nsnull;
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return NS_OK;
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}
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return CallQueryInterface(mTop, aRoot);
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}
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/* readonly attribute nsIDOMElement current; */
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NS_IMETHODIMP nsXMLContentBuilder::GetCurrent(nsIDOMElement * *aCurrent)
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{
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if (!mCurrent) {
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*aCurrent = nsnull;
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return NS_OK;
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}
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return CallQueryInterface(mCurrent, aCurrent);
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}
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//----------------------------------------------------------------------
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// implementation helpers
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void nsXMLContentBuilder::EnsureDoc()
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{
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if (!mDocument) {
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mDocument = do_CreateInstance(kXMLDocumentCID);
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// XXX should probably do some doc initialization here, such as
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// setting the base url
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}
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NS_ASSERTION(mDocument, "null doc");
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}
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