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125 lines
4.7 KiB
C++
125 lines
4.7 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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* IBM Corporation.
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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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* Brian Ryner <bryner@brianryner.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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#ifndef nsXFormsUtils_h_
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#define nsXFormsUtils_h_
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/**
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* This class has static helper methods that don't fit into a specific place
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* in the class hierarchy.
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*/
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#include "prtypes.h"
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#include "nsCOMPtr.h"
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#include "nsIDOMXPathResult.h"
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class nsIDOMNode;
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class nsIDOMElement;
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class nsIXFormsModelElement;
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#define NS_NAMESPACE_XFORMS "http://www.w3.org/2002/xforms"
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#define NS_NAMESPACE_XHTML "http://www.w3.org/1999/xhtml"
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class nsXFormsUtils
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{
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public:
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/**
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* Locate the model that |aElement| is bound to, and if applicable, the
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* <bind> element that it uses. The model is returned and the
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* bind element is returned (addrefed) in |aBindElement|.
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*/
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static NS_HIDDEN_(nsIDOMNode*)
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GetModelAndBind(nsIDOMElement *aElement, nsIDOMElement **aBindElement);
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/**
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* Evaluate a 'bind' or 'ref' attribute on |aElement|. |aResultType| is
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* used as the desired result type for the XPath evaluation. The model and
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* bind elements (if applicable) are located as part of this evaluation,
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* and are returned (addrefed) in |aModel| and |aBind|.
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*
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* The return value is an XPathResult as returned from
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* nsIDOMXPathEvaluator::Evaluate().
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*/
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static NS_HIDDEN_(already_AddRefed<nsIDOMXPathResult>)
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EvaluateNodeBinding(nsIDOMElement *aElement,
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PRUint16 aResultType,
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nsIDOMNode **aModel,
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nsIDOMElement **aBind);
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/**
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* Given a bind element |aElement|, return the nodeset that it applies to.
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* |aResultType| is used as the desired result type for the XPath
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* evaluation.
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*/
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static NS_HIDDEN_(already_AddRefed<nsIDOMXPathResult>)
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EvaluateNodeset(nsIDOMElement *aElement, PRUint16 aResultType);
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/**
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* Given a bind element |aElement|, find the context node to be used
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* for evaluating its nodeset.
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*/
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static NS_HIDDEN_(already_AddRefed<nsIDOMNode>)
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FindBindContext(nsIDOMElement *aBindElement,
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nsIXFormsModelElement *aModelElement);
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/**
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* Convenience method for doing XPath evaluations. This gets a
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* nsIDOMXPathEvaluator from |aContextNode|'s ownerDocument, and calls
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* nsIDOMXPathEvaluator::Evalute using the given expression, context node,
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* namespace resolver, and result type.
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*/
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static NS_HIDDEN_(already_AddRefed<nsIDOMXPathResult>)
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EvaluateXPath(const nsAString &aExpression,
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nsIDOMNode *aContextNode,
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nsIDOMNode *aResolverNode,
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PRUint16 aResultType);
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/**
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* Clone the set of IIDs in |aIIDList| into |aOutArray|.
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* |aOutCount| is set to |aIIDCount|.
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*/
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static NS_HIDDEN_(nsresult) CloneScriptingInterfaces(const nsIID *aIIDList,
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unsigned int aIIDCount,
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PRUint32 *aOutCount,
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nsIID ***aOutArray);
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};
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#endif
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