mirror of
https://github.com/mozilla/gecko-dev.git
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330 lines
8.5 KiB
C++
330 lines
8.5 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 Mozilla XForms support.
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*
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* The Initial Developer of the Original Code is
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* Novell, Inc.
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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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* Allan Beaufour <abeaufour@novell.com>
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* David Landwehr <dlandwehr@novell.com>
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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 "nsXFormsMDG.h"
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#include "nsVoidArray.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMText.h"
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#include "nsXFormsXPathNode.h"
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MOZ_DECL_CTOR_COUNTER(nsXFormsMDG)
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nsXFormsMDG::nsXFormsMDG()
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: mEngine(this)
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{
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MOZ_COUNT_CTOR(nsXFormsMDG);
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}
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nsXFormsMDG::~nsXFormsMDG()
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{
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MOZ_COUNT_DTOR(nsXFormsMDG);
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}
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nsresult
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nsXFormsMDG::Init()
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{
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return mEngine.Init();
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}
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nsresult
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nsXFormsMDG::CreateNewChild(nsIDOMNode* aContextNode, const nsAString& aNodeValue,
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nsIDOMNode* aBeforeNode)
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{
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nsresult rv;
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nsCOMPtr<nsIDOMDocument> document;
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rv = aContextNode->GetOwnerDocument(getter_AddRefs(document));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDOMText> textNode;
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rv = document->CreateTextNode(aNodeValue, getter_AddRefs(textNode));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDOMNode> newNode;
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if (aBeforeNode) {
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rv = aContextNode->InsertBefore(textNode, aBeforeNode, getter_AddRefs(newNode));
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} else {
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rv = aContextNode->AppendChild(textNode, getter_AddRefs(newNode));
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}
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return rv;
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}
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nsresult
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nsXFormsMDG::AddMIP(ModelItemPropName aType, nsIDOMXPathExpression* aExpression,
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nsXFormsMDGSet* aDeps, PRBool aDynFunc, nsIDOMNode* aContextNode,
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PRInt32 aContextPos, PRInt32 aContextSize)
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{
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NS_ENSURE_ARG(aExpression);
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NS_ENSURE_ARG(aContextNode);
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return mEngine.Insert(aContextNode, aExpression, aDeps, aDynFunc, aContextPos, aContextSize, aType);
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}
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nsresult
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nsXFormsMDG::MarkNodeAsChanged(nsIDOMNode* aContextNode)
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{
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return mEngine.MarkNode(aContextNode);
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}
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nsresult
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nsXFormsMDG::Recalculate(nsXFormsMDGSet& aChangedNodes)
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{
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return mEngine.Calculate(aChangedNodes);
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}
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nsresult
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nsXFormsMDG::Rebuild()
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{
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return mEngine.Rebuild();
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}
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void
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nsXFormsMDG::ClearDispatchFlags()
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{
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mEngine.ClearDispatchFlags();
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}
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void
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nsXFormsMDG::Clear() {
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mEngine.Clear();
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}
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nsresult
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nsXFormsMDG::GetNodeValue(nsIDOMNode* aContextNode, nsAString& aNodeValue)
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{
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nsresult rv;
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nsCOMPtr<nsIDOMNode> childNode;
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PRUint16 nodeType;
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rv = aContextNode->GetNodeType(&nodeType);
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NS_ENSURE_SUCCESS(rv, rv);
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switch(nodeType) {
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case nsIDOMNode::ATTRIBUTE_NODE:
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case nsIDOMNode::TEXT_NODE:
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case nsIDOMNode::CDATA_SECTION_NODE:
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case nsIDOMNode::PROCESSING_INSTRUCTION_NODE:
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case nsIDOMNode::COMMENT_NODE:
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rv = aContextNode->GetNodeValue(aNodeValue);
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NS_ENSURE_SUCCESS(rv, rv);
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break;
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case nsIDOMNode::ELEMENT_NODE:
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rv = aContextNode->GetFirstChild(getter_AddRefs(childNode));
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if (NS_FAILED(rv) || !childNode) {
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// No child
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aNodeValue.Truncate(0);
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} else {
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PRUint16 childType;
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rv = childNode->GetNodeType(&childType);
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NS_ENSURE_SUCCESS(rv, rv);
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if ( childType == nsIDOMNode::TEXT_NODE
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|| childType == nsIDOMNode::CDATA_SECTION_NODE) {
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rv = childNode->GetNodeValue(aNodeValue);
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NS_ENSURE_SUCCESS(rv, rv);
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} else {
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// Not a text child
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aNodeValue.Truncate(0);
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}
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}
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break;
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default:
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// Asked for a node which cannot have a text child
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// TODO: Should return more specific error?
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return NS_ERROR_ILLEGAL_VALUE;
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break;
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}
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return NS_OK;
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}
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nsresult
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nsXFormsMDG::SetNodeValue(nsIDOMNode* aContextNode, nsAString& aNodeValue, PRBool aMarkNode)
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{
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if (IsReadonly(aContextNode)) {
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// TODO: Better feedback for readonly nodes?
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return NS_OK;
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}
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nsresult rv;
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nsCOMPtr<nsIDOMNode> childNode;
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PRUint16 nodeType;
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rv = aContextNode->GetNodeType(&nodeType);
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NS_ENSURE_SUCCESS(rv, rv);
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switch(nodeType) {
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case nsIDOMNode::ATTRIBUTE_NODE:
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case nsIDOMNode::TEXT_NODE:
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case nsIDOMNode::CDATA_SECTION_NODE:
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case nsIDOMNode::PROCESSING_INSTRUCTION_NODE:
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case nsIDOMNode::COMMENT_NODE:
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// TODO: Check existing value, and ignore if same??
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rv = aContextNode->SetNodeValue(aNodeValue);
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NS_ENSURE_SUCCESS(rv, rv);
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break;
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case nsIDOMNode::ELEMENT_NODE:
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rv = aContextNode->GetFirstChild(getter_AddRefs(childNode));
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NS_ENSURE_SUCCESS(rv, rv);
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if (!childNode) {
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rv = CreateNewChild(aContextNode, aNodeValue);
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NS_ENSURE_SUCCESS(rv, rv);
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} else {
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PRUint16 childType;
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rv = childNode->GetNodeType(&childType);
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NS_ENSURE_SUCCESS(rv, rv);
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if ( childType == nsIDOMNode::TEXT_NODE
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|| childType == nsIDOMNode::CDATA_SECTION_NODE) {
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rv = childNode->SetNodeValue(aNodeValue);
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NS_ENSURE_SUCCESS(rv, rv);
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} else {
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// Not a text child, create a new one
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rv = CreateNewChild(aContextNode, aNodeValue, childNode);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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}
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break;
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default:
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// Unsupported nodeType
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// TODO: Should return more specific error?
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return NS_ERROR_ILLEGAL_VALUE;
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break;
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}
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// NB: Never reached for Readonly nodes.
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if (aMarkNode) {
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MarkNodeAsChanged(aContextNode);
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}
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return NS_OK;
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}
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/**********************************************/
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/* Bit test functions */
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/**********************************************/
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PRBool
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nsXFormsMDG::IsValid(nsIDOMNode* aContextNode)
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{
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PRBool valid = mEngine.Test(aContextNode, MDG_FLAG_CONSTRAINT);
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if (valid) {
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// TODO: needs Schema support
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// valid = mSchemaHandler->ValidateNode(aContextNode);
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}
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return valid;
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}
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PRBool
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nsXFormsMDG::IsConstraint(nsIDOMNode* aContextNode)
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{
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return mEngine.Test(aContextNode, MDG_FLAG_CONSTRAINT);
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}
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PRBool
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nsXFormsMDG::ShouldDispatchValid(nsIDOMNode* aContextNode)
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{
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return mEngine.Test(aContextNode, MDG_FLAG_DISPATCH_VALID_CHANGED);
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}
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PRBool
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nsXFormsMDG::IsReadonly(nsIDOMNode* aContextNode)
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{
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PRBool valid;
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if ( mEngine.Test(aContextNode, MDG_FLAG_READONLY)
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|| mEngine.Test(aContextNode, MDG_FLAG_INHERITED_READONLY)) {
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valid = PR_TRUE;
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} else {
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valid = PR_FALSE;
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}
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return valid;
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}
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PRBool
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nsXFormsMDG::ShouldDispatchReadonly(nsIDOMNode* aContextNode)
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{
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return mEngine.Test(aContextNode, MDG_FLAG_DISPATCH_READONLY_CHANGED);
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}
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PRBool
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nsXFormsMDG::IsRelevant(nsIDOMNode* aContextNode)
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{
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PRBool valid;
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if ( mEngine.Test(aContextNode, MDG_FLAG_RELEVANT)
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&& mEngine.Test(aContextNode, MDG_FLAG_INHERITED_RELEVANT)) {
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valid = PR_TRUE;
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} else {
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valid = PR_FALSE;
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}
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return valid;
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}
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PRBool
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nsXFormsMDG::ShouldDispatchRelevant(nsIDOMNode* aContextNode)
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{
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return mEngine.Test(aContextNode, MDG_FLAG_DISPATCH_RELEVANT_CHANGED);
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}
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PRBool
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nsXFormsMDG::IsRequired(nsIDOMNode* aContextNode)
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{
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return mEngine.Test(aContextNode, MDG_FLAG_REQUIRED);
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}
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PRBool
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nsXFormsMDG::ShouldDispatchRequired(nsIDOMNode* aContextNode)
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{
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return mEngine.Test(aContextNode, MDG_FLAG_DISPATCH_REQUIRED_CHANGED);
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}
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PRBool
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nsXFormsMDG::ShouldDispatchValueChanged(nsIDOMNode* aContextNode)
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{
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return mEngine.Test(aContextNode, MDG_FLAG_DISPATCH_VALUE_CHANGED);
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}
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