зеркало из https://github.com/mozilla/pjs.git
147 строки
5.0 KiB
C++
147 строки
5.0 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 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) 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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* Allan Beaufour <abeaufour@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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 <math.h>
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#include "nsIDOMDocument.h"
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#include "nsIDOMXPathResult.h"
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#include "nsIXFormsRepeatElement.h"
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#include "nsXFormsActionModuleBase.h"
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#include "nsXFormsActionElement.h"
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#ifdef DEBUG
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//#define DEBUG_XF_SETINDEX
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#endif
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/**
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* Implementation of the XForms \<setindex\> element.
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*
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* To set the index for a \<repeat\>, we find the (DOM) \<repeat\> with the
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* given @id, and call nsIXFormsRepeatElement::SetIndex() on it.
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*
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* @see http://www.w3.org/TR/xforms/slice9.html#action-setRepeatCursor
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*/
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class nsXFormsSetIndexElement : public nsXFormsActionModuleBase
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{
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public:
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NS_DECL_NSIXFORMSACTIONMODULEELEMENT
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};
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NS_IMETHODIMP
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nsXFormsSetIndexElement::HandleAction(nsIDOMEvent *aEvent,
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nsIXFormsActionElement *aParentAction)
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{
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if (!mElement)
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return NS_OK;
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// Get @repeat and @index
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nsAutoString id, index;
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NS_NAMED_LITERAL_STRING(repeatStr, "repeat");
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mElement->GetAttribute(repeatStr, id);
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NS_NAMED_LITERAL_STRING(indexStr, "index");
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mElement->GetAttribute(indexStr, index);
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if (id.IsEmpty() || index.IsEmpty()) {
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/// @todo Should we dispatch an exception, or just define that this does
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/// not happen as it is a non-validating form as both are required
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/// attributes, and index should be an integer? (XXX)
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return NS_ERROR_ABORT;
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}
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// Find index (XPath) value
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nsresult rv;
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nsCOMPtr<nsIModelElementPrivate> model;
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nsCOMPtr<nsIDOMXPathResult> result;
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// EvaluateNodeBinding uses @bind if @index is not present, but we have
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// checked that @index is present above
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rv = nsXFormsUtils::EvaluateNodeBinding(mElement,
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0,
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indexStr,
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EmptyString(),
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nsIDOMXPathResult::NUMBER_TYPE,
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getter_AddRefs(model),
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getter_AddRefs(result));
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NS_ENSURE_SUCCESS(rv, rv);
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if (!result) {
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nsXFormsUtils::ReportError(NS_LITERAL_STRING("indexEvalError"),
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mElement);
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return NS_OK;
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}
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double indexDoub;
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rv = result->GetNumberValue(&indexDoub);
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NS_ENSURE_SUCCESS(rv, rv);
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PRUint32 indexInt = indexDoub < 1 ? 0 : (PRUint32) floor(indexDoub);
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// Find the \<repeat\> with @id == |id|
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nsCOMPtr<nsIDOMDocument> domDoc;
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rv = mElement->GetOwnerDocument(getter_AddRefs(domDoc));
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NS_ENSURE_SUCCESS(rv, rv);
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#ifdef DEBUG_XF_SETINDEX
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printf("<setindex>: Setting index '%s' to '%d'\n",
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NS_ConvertUCS2toUTF8(id).get(),
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indexInt);
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#endif
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nsCOMPtr<nsIDOMElement> repeatElem;
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rv = domDoc->GetElementById(id, getter_AddRefs(repeatElem));
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nsCOMPtr<nsIXFormsRepeatElement> repeat = do_QueryInterface(repeatElem);
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if (!repeat) {
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const PRUnichar *strings[] = { id.get(), repeatStr.get() };
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nsXFormsUtils::ReportError(NS_LITERAL_STRING("idRefError"),
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strings, 2, mElement, mElement);
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return NS_OK;
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}
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// Set the index = |indexInt|
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return repeat->SetIndex(&indexInt, PR_FALSE);
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}
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NS_HIDDEN_(nsresult)
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NS_NewXFormsSetIndexElement(nsIXTFElement **aResult)
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{
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*aResult = new nsXFormsSetIndexElement();
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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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