2005-11-18 01:00:27 +03:00
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/* -*- 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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* IBM Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Aaron Reed <aaronr@us.ibm.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 "nsIXFormsCopyElement.h"
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#include "nsXFormsStubElement.h"
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#include "nsIXTFGenericElementWrapper.h"
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#include "nsXFormsUtils.h"
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#include "nsIDOMElement.h"
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#include "nsString.h"
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#include "nsIXFormsItemElement.h"
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/**
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* Implementation of the XForms \<copy\> element.
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*
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* @note The copy element does not display any content, it simply provides
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* a node to be copied to instance data when the containing XForms item
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* element is selected.
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*/
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class nsXFormsCopyElement : public nsXFormsStubElement,
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public nsIXFormsCopyElement
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{
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public:
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nsXFormsCopyElement() : mElement(nsnull) {}
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NS_DECL_ISUPPORTS_INHERITED
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// nsIXTFGenericElement overrides
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NS_IMETHOD OnCreated(nsIXTFGenericElementWrapper *aWrapper);
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// nsIXTFElement overrides
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NS_IMETHOD ParentChanged(nsIDOMElement *aNewParent);
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NS_IMETHOD DocumentChanged(nsIDOMDocument *aNewParent);
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// nsIXFormsCopyElement
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NS_DECL_NSIXFORMSCOPYELEMENT
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private:
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nsIDOMElement *mElement;
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};
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NS_IMPL_ISUPPORTS_INHERITED1(nsXFormsCopyElement,
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nsXFormsStubElement,
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nsIXFormsCopyElement)
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NS_IMETHODIMP
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nsXFormsCopyElement::OnCreated(nsIXTFGenericElementWrapper *aWrapper)
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{
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aWrapper->SetNotificationMask(nsIXTFElement::NOTIFY_PARENT_CHANGED |
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nsIXTFElement::NOTIFY_DOCUMENT_CHANGED);
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nsCOMPtr<nsIDOMElement> node;
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aWrapper->GetElementNode(getter_AddRefs(node));
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// It's ok to keep pointer to mElement. mElement will have an
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// owning reference to this object, so as long as we null out mElement in
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// OnDestroyed, it will always be valid.
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mElement = node;
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NS_ASSERTION(mElement, "Wrapper is not an nsIDOMElement, we'll crash soon");
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return NS_OK;
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}
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// nsIXTFElement
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NS_IMETHODIMP
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nsXFormsCopyElement::ParentChanged(nsIDOMElement *aNewParent)
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{
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if (aNewParent) {
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if (!nsXFormsUtils::IsXFormsElement(aNewParent,
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NS_LITERAL_STRING("itemset")) &&
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!nsXFormsUtils::IsXFormsElement(aNewParent,
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NS_LITERAL_STRING("contextcontainer"))) {
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// parent of a copy element must always be an itemset. We really can't
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// enforce this all that well until we have full schema support but for
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// now we'll at least warn the author. We are also checking for
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// contextcontainer because under Mozilla, the children of an itemset
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// element are cloned underneath a contextcontainer which is in turn
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// contained in a nsXFormsItemElement. Each such item element is then
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// appended as anonymous content of the itemset.
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nsXFormsUtils::ReportError(NS_LITERAL_STRING("copyError"), mElement);
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsCopyElement::DocumentChanged(nsIDOMDocument* aNewDocument)
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{
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if (!aNewDocument)
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return NS_OK;
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// tell grandparent (xf:item) that it contains a xf:copy element and
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// not a xf:value element.
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nsCOMPtr<nsIDOMNode> contextContainer;
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nsresult rv = mElement->GetParentNode(getter_AddRefs(contextContainer));
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NS_ENSURE_TRUE(contextContainer, rv);
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nsCOMPtr<nsIDOMNode> itemNode;
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rv = contextContainer->GetParentNode(getter_AddRefs(itemNode));
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NS_ENSURE_TRUE(itemNode, rv);
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nsCOMPtr<nsIXFormsItemElement> item = do_QueryInterface(itemNode);
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// It is possible that the grandparent ISN'T an xf:item, if this is the
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// original template copy element whose parent is the xf:itemset and
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// grandparent is the xf:select. We'll ignore a copy element in that case
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// since it really isn't in play.
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if (item) {
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item->SetIsCopyItem(PR_TRUE);
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}
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return NS_OK;
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}
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// nsIXFormsCopyElement
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NS_IMETHODIMP
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nsXFormsCopyElement::GetCopyNode(nsIDOMNode **aNode)
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{
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NS_ENSURE_ARG_POINTER(aNode);
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*aNode = nsnull;
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2006-02-23 14:25:07 +03:00
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nsCOMPtr<nsIDOMNode> singleNode;
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2005-11-18 01:00:27 +03:00
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nsCOMPtr<nsIModelElementPrivate> model;
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2006-02-23 14:25:07 +03:00
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PRBool succeeded =
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nsXFormsUtils::GetSingleNodeBinding(mElement,
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getter_AddRefs(singleNode),
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getter_AddRefs(model));
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if (succeeded && singleNode)
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NS_ADDREF(*aNode = singleNode);
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2005-11-18 01:00:27 +03:00
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return NS_OK;
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}
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NS_HIDDEN_(nsresult)
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NS_NewXFormsCopyElement(nsIXTFElement **aResult)
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{
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*aResult = new nsXFormsCopyElement();
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if (!*aResult)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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