73690f9d73
only flush the things they really need flushed. Bug 144072, r+sr=jst git-svn-id: svn://10.0.0.236/trunk@157037 18797224-902f-48f8-a5cc-f745e15eee43
359 lines
10 KiB
C++
359 lines
10 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() : mNumberValue(0),
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mDocument(0),
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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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Reset();
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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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NS_ENSURE_ARG(aResultType);
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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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NS_ENSURE_ARG(aNumberValue);
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*aNumberValue = mNumberValue;
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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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if (mStringValue)
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aStringValue.Assign(*mStringValue);
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else
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SetDOMStringToNull(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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NS_ENSURE_ARG(aBooleanValue);
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*aBooleanValue = mBooleanValue;
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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 (mResultType != FIRST_ORDERED_NODE_TYPE &&
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mResultType != ANY_UNORDERED_NODE_TYPE)
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return NS_ERROR_DOM_TYPE_ERR;
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NS_ENSURE_ARG(aSingleNodeValue);
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*aSingleNodeValue = mNode;
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NS_IF_ADDREF(*aSingleNodeValue);
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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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NS_ENSURE_ARG(aInvalidIteratorState);
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if (mResultType != UNORDERED_NODE_ITERATOR_TYPE &&
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mResultType != ORDERED_NODE_ITERATOR_TYPE) {
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*aInvalidIteratorState = PR_FALSE;
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return NS_OK;
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}
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*aInvalidIteratorState = 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 (mResultType != UNORDERED_NODE_SNAPSHOT_TYPE &&
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mResultType != ORDERED_NODE_SNAPSHOT_TYPE)
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return NS_ERROR_DOM_TYPE_ERR;
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NS_ENSURE_ARG(aSnapshotLength);
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*aSnapshotLength = 0;
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if (mElements)
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*aSnapshotLength = mElements->Count();
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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 (mResultType != UNORDERED_NODE_ITERATOR_TYPE &&
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mResultType != ORDERED_NODE_ITERATOR_TYPE)
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return NS_ERROR_DOM_TYPE_ERR;
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if (mDocument)
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mDocument->FlushPendingNotifications(Flush_Content);
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if (mInvalidIteratorState)
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return NS_ERROR_DOM_INVALID_STATE_ERR;
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NS_ENSURE_ARG(aResult);
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if (mElements && mCurrentPos < (PRUint32)mElements->Count()) {
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*aResult = mElements->ObjectAt(mCurrentPos++);
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NS_ADDREF(*aResult);
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return NS_OK;
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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 (mResultType != UNORDERED_NODE_SNAPSHOT_TYPE &&
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mResultType != ORDERED_NODE_SNAPSHOT_TYPE)
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return NS_ERROR_DOM_TYPE_ERR;
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NS_ENSURE_ARG(aResult);
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if (mElements && aIndex < (PRUint32)mElements->Count()) {
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*aResult = mElements->ObjectAt(aIndex);
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NS_ADDREF(*aResult);
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return NS_OK;
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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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NS_IMETHODIMP
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nsXPathResult::SetExprResult(txAExprResult* aExprResult, PRUint16 aResultType)
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{
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Reset();
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mResultType = aResultType;
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if (mResultType == NUMBER_TYPE) {
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mNumberValue = aExprResult->numberValue();
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return NS_OK;
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}
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if (mResultType == STRING_TYPE) {
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mStringValue = new nsString;
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NS_ENSURE_TRUE(mStringValue, NS_ERROR_OUT_OF_MEMORY);
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aExprResult->stringValue(*mStringValue);
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return NS_OK;
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}
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if (mResultType == BOOLEAN_TYPE) {
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mBooleanValue = aExprResult->booleanValue();
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return NS_OK;
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}
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if (aExprResult->getResultType() == txAExprResult::NODESET) {
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nsresult rv = NS_OK;
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txNodeSet* nodeSet = NS_STATIC_CAST(txNodeSet*, aExprResult);
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if (mResultType == FIRST_ORDERED_NODE_TYPE ||
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mResultType == ANY_UNORDERED_NODE_TYPE) {
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if (nodeSet->size() > 0) {
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txXPathNativeNode::getNode(nodeSet->get(0), &mNode);
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}
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}
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else {
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if (mResultType == UNORDERED_NODE_ITERATOR_TYPE ||
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mResultType == ORDERED_NODE_ITERATOR_TYPE) {
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mInvalidIteratorState = PR_FALSE;
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}
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PRInt32 count = nodeSet->size();
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if (count == 0)
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return NS_OK;
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mElements = new nsCOMArray<nsIDOMNode>;
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NS_ENSURE_TRUE(mElements, NS_ERROR_OUT_OF_MEMORY);
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nsCOMPtr<nsIDOMNode> node;
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PRInt32 i;
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for (i = 0; i < count; ++i) {
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txXPathNativeNode::getNode(nodeSet->get(i), getter_AddRefs(node));
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NS_ASSERTION(node, "node isn't an nsIDOMNode");
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mElements->AppendObject(node);
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}
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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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if (mResultType == UNORDERED_NODE_ITERATOR_TYPE ||
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mResultType == ORDERED_NODE_ITERATOR_TYPE) {
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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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else
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mDocument = do_QueryInterface(node);
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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 rv;
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}
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return NS_ERROR_DOM_TYPE_ERR;
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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 = 0;
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}
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mInvalidIteratorState = PR_TRUE;
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}
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void
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nsXPathResult::Reset()
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{
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Invalidate();
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if (mResultType == STRING_TYPE) {
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delete mStringValue;
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mStringValue = 0;
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}
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else if (mResultType == UNORDERED_NODE_ITERATOR_TYPE ||
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mResultType == ORDERED_NODE_ITERATOR_TYPE ||
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mResultType == UNORDERED_NODE_SNAPSHOT_TYPE ||
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mResultType == ORDERED_NODE_SNAPSHOT_TYPE) {
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delete mElements;
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mCurrentPos = 0;
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}
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else if (mResultType == FIRST_ORDERED_NODE_TYPE ||
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mResultType == ANY_UNORDERED_NODE_TYPE) {
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NS_IF_RELEASE(mNode);
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}
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mResultType = ANY_TYPE;
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return;
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}
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