mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-09-19 19:50:18 +02:00
380 lines
9.9 KiB
C++
380 lines
9.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Peter Van der Beken <peterv@propagandism.org>
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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 "nsXPathResult.h"
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#include "ExprResult.h"
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#include "txNodeSet.h"
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#include "nsDOMError.h"
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#include "nsIContent.h"
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#include "nsIDOMClassInfo.h"
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#include "nsIDOMNode.h"
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#include "nsXPathException.h"
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#include "nsIDOMDocument.h"
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#include "nsDOMString.h"
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nsXPathResult::nsXPathResult() : mDocument(nsnull),
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mCurrentPos(0),
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mResultType(ANY_TYPE),
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mInvalidIteratorState(PR_TRUE)
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{
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}
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nsXPathResult::~nsXPathResult()
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{
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if (mDocument) {
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mDocument->RemoveObserver(this);
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}
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}
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NS_IMPL_ADDREF(nsXPathResult)
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NS_IMPL_RELEASE(nsXPathResult)
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NS_INTERFACE_MAP_BEGIN(nsXPathResult)
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NS_INTERFACE_MAP_ENTRY(nsIDOMXPathResult)
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NS_INTERFACE_MAP_ENTRY(nsIDocumentObserver)
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NS_INTERFACE_MAP_ENTRY(nsIXPathResult)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMXPathResult)
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NS_INTERFACE_MAP_ENTRY_EXTERNAL_DOM_CLASSINFO(XPathResult)
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NS_INTERFACE_MAP_END
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NS_IMETHODIMP
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nsXPathResult::GetResultType(PRUint16 *aResultType)
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{
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*aResultType = mResultType;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXPathResult::GetNumberValue(double *aNumberValue)
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{
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if (mResultType != NUMBER_TYPE) {
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return NS_ERROR_DOM_TYPE_ERR;
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}
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*aNumberValue = mResult.get()->numberValue();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXPathResult::GetStringValue(nsAString &aStringValue)
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{
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if (mResultType != STRING_TYPE) {
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return NS_ERROR_DOM_TYPE_ERR;
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}
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mResult.get()->stringValue(aStringValue);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXPathResult::GetBooleanValue(PRBool *aBooleanValue)
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{
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if (mResultType != BOOLEAN_TYPE) {
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return NS_ERROR_DOM_TYPE_ERR;
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}
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*aBooleanValue = mResult.get()->booleanValue();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXPathResult::GetSingleNodeValue(nsIDOMNode **aSingleNodeValue)
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{
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if (!isNode()) {
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return NS_ERROR_DOM_TYPE_ERR;
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}
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txNodeSet *nodeSet = NS_STATIC_CAST(txNodeSet*, mResult.get());
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if (nodeSet->size() > 0) {
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return txXPathNativeNode::getNode(nodeSet->get(0), aSingleNodeValue);
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}
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*aSingleNodeValue = nsnull;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXPathResult::GetInvalidIteratorState(PRBool *aInvalidIteratorState)
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{
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*aInvalidIteratorState = isIterator() && mInvalidIteratorState;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXPathResult::GetSnapshotLength(PRUint32 *aSnapshotLength)
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{
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if (!isSnapshot()) {
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return NS_ERROR_DOM_TYPE_ERR;
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}
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txNodeSet *nodeSet = NS_STATIC_CAST(txNodeSet*, mResult.get());
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*aSnapshotLength = (PRUint32)nodeSet->size();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXPathResult::IterateNext(nsIDOMNode **aResult)
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{
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if (!isIterator()) {
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return NS_ERROR_DOM_TYPE_ERR;
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}
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if (mDocument) {
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mDocument->FlushPendingNotifications(Flush_Content);
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}
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if (mInvalidIteratorState) {
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return NS_ERROR_DOM_INVALID_STATE_ERR;
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}
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txNodeSet *nodeSet = NS_STATIC_CAST(txNodeSet*, mResult.get());
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if (mCurrentPos < (PRUint32)nodeSet->size()) {
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return txXPathNativeNode::getNode(nodeSet->get(mCurrentPos++),
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aResult);
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}
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*aResult = nsnull;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXPathResult::SnapshotItem(PRUint32 aIndex, nsIDOMNode **aResult)
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{
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if (!isSnapshot()) {
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return NS_ERROR_DOM_TYPE_ERR;
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}
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txNodeSet *nodeSet = NS_STATIC_CAST(txNodeSet*, mResult.get());
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if (aIndex < (PRUint32)nodeSet->size()) {
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return txXPathNativeNode::getNode(nodeSet->get(aIndex), aResult);
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}
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*aResult = nsnull;
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return NS_OK;
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}
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NS_IMPL_NSIDOCUMENTOBSERVER_CORE_STUB(nsXPathResult)
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NS_IMPL_NSIDOCUMENTOBSERVER_LOAD_STUB(nsXPathResult)
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NS_IMPL_NSIDOCUMENTOBSERVER_REFLOW_STUB(nsXPathResult)
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NS_IMPL_NSIDOCUMENTOBSERVER_STYLE_STUB(nsXPathResult)
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NS_IMPL_NSIDOCUMENTOBSERVER_STATE_STUB(nsXPathResult)
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void
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nsXPathResult::CharacterDataChanged(nsIDocument* aDocument,
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nsIContent *aContent,
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PRBool aAppend)
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{
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Invalidate();
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}
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void
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nsXPathResult::AttributeChanged(nsIDocument* aDocument,
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nsIContent* aContent,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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Invalidate();
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}
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void
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nsXPathResult::ContentAppended(nsIDocument* aDocument,
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nsIContent* aContainer,
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PRInt32 aNewIndexInContainer)
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{
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Invalidate();
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}
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void
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nsXPathResult::ContentInserted(nsIDocument* aDocument,
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nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer)
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{
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Invalidate();
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}
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void
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nsXPathResult::ContentRemoved(nsIDocument* aDocument,
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nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer)
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{
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Invalidate();
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}
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nsresult
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nsXPathResult::SetExprResult(txAExprResult* aExprResult, PRUint16 aResultType)
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{
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mResultType = aResultType;
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if ((isSnapshot() || isIterator() || isNode()) &&
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aExprResult->getResultType() != txAExprResult::NODESET) {
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return NS_ERROR_DOM_TYPE_ERR;
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}
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if (mDocument) {
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mDocument->RemoveObserver(this);
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mDocument = nsnull;
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}
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mResult.set(aExprResult);
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if (!isIterator()) {
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return NS_OK;
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}
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mInvalidIteratorState = PR_FALSE;
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txNodeSet* nodeSet = NS_STATIC_CAST(txNodeSet*, aExprResult);
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nsCOMPtr<nsIDOMNode> node;
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if (nodeSet->size() > 0) {
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nsresult rv = txXPathNativeNode::getNode(nodeSet->get(0),
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getter_AddRefs(node));
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NS_ENSURE_SUCCESS(rv, rv);
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// If we support the document() function in DOM-XPath we need to
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// observe all documents that we have resultnodes in.
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nsCOMPtr<nsIDOMDocument> document;
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node->GetOwnerDocument(getter_AddRefs(document));
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if (document) {
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mDocument = do_QueryInterface(document);
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}
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else {
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mDocument = do_QueryInterface(node);
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}
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NS_ASSERTION(mDocument, "We need a document!");
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if (mDocument) {
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mDocument->AddObserver(this);
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}
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}
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return NS_OK;
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}
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void
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nsXPathResult::Invalidate()
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{
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if (mDocument) {
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mDocument->RemoveObserver(this);
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mDocument = nsnull;
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}
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mInvalidIteratorState = PR_TRUE;
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}
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nsresult
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nsXPathResult::GetExprResult(txAExprResult** aExprResult)
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{
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if (isIterator() && mInvalidIteratorState) {
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return NS_ERROR_DOM_INVALID_STATE_ERR;
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}
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*aExprResult = mResult.get();
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if (!*aExprResult) {
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return NS_ERROR_DOM_INVALID_STATE_ERR;
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}
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NS_ADDREF(*aExprResult);
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return NS_OK;
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}
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nsresult
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nsXPathResult::Clone(nsIXPathResult **aResult)
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{
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*aResult = nsnull;
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if (isIterator() && mInvalidIteratorState) {
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return NS_ERROR_DOM_INVALID_STATE_ERR;
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}
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nsCOMPtr<nsIXPathResult> result = new nsXPathResult();
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if (!result) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsresult rv = result->SetExprResult(mResult.get(), mResultType);
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NS_ENSURE_SUCCESS(rv, rv);
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result.swap(*aResult);
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return NS_OK;
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}
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void
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txResultHolder::set(txAExprResult *aResult)
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{
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releaseNodeSet();
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// XXX This will keep the recycler alive, should we clear it?
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mResult = aResult;
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if (mResult && mResult->getResultType() == txAExprResult::NODESET) {
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txNodeSet *nodeSet =
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NS_STATIC_CAST(txNodeSet*,
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NS_STATIC_CAST(txAExprResult*, mResult));
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PRInt32 i, count = nodeSet->size();
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for (i = 0; i < count; ++i) {
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txXPathNativeNode::addRef(nodeSet->get(i));
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}
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}
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}
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void
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txResultHolder::releaseNodeSet()
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{
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if (mResult && mResult->getResultType() == txAExprResult::NODESET) {
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txNodeSet *nodeSet =
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NS_STATIC_CAST(txNodeSet*,
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NS_STATIC_CAST(txAExprResult*, mResult));
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PRInt32 i, count = nodeSet->size();
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for (i = 0; i < count; ++i) {
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txXPathNativeNode::release(nodeSet->get(i));
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}
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}
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}
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