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lightning-sunbird  0.9+nobinonly
nsXFormsRangeAccessors.cpp
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Mozilla XForms support.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Novell, Inc.
00019  * Portions created by the Initial Developer are Copyright (C) 2005
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *  Allan Beaufour <abeaufour@novell.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #include "nsXFormsRangeAccessors.h"
00040 #include "nsDOMString.h"
00041 #include "nsIDOMElement.h"
00042 #include "nsString.h"
00043 #include "nsXFormsUtils.h"
00044 
00045 NS_IMPL_ISUPPORTS_INHERITED2(nsXFormsRangeAccessors,
00046                              nsXFormsRangeConditionAccessors,
00047                              nsIXFormsRangeAccessors, 
00048                              nsIClassInfo)
00049 
00050 // nsXFormsRangeAccessors
00051 nsresult
00052 nsXFormsRangeAccessors::AttributeGetter(const nsAString &aAttr, nsAString &aVal)
00053 {
00054   nsAutoString val;
00055   if (mElement) {
00056     mElement->GetAttribute(aAttr, val);
00057   }
00058   if (val.IsEmpty()) {
00059     SetDOMStringToNull(aVal);
00060   } else {
00061     aVal = val;
00062   }
00063 
00064   return NS_OK;
00065 }
00066 
00067 
00068 // nsIXFormsRangeElement
00069 
00070 // XXX this should do a max(type.minumum, @start)
00071 NS_IMETHODIMP
00072 nsXFormsRangeAccessors::GetRangeStart(nsAString &aMin)
00073 {
00074   return AttributeGetter(NS_LITERAL_STRING("start"), aMin);
00075 }
00076 
00077 // XXX this should do min(type.maximu, @end)
00078 NS_IMETHODIMP
00079 nsXFormsRangeAccessors::GetRangeEnd(nsAString &aMax)
00080 {
00081   return AttributeGetter(NS_LITERAL_STRING("end"), aMax);
00082 }
00083 
00084 // XXX if step is not set, it should be set to something "smart" and also
00085 // needs to be something that is valid for the given type. This could be
00086 // pushed to the widget though.
00087 NS_IMETHODIMP
00088 nsXFormsRangeAccessors::GetRangeStep(nsAString &aStep)
00089 {
00090   return AttributeGetter(NS_LITERAL_STRING("step"), aStep);
00091 }
00092 
00093 
00094 // nsIClassInfo implementation
00095 
00096 static const nsIID sScriptingIIDs[] = {
00097   NS_IXFORMSACCESSORS_IID,
00098   NS_IXFORMSRANGECONDITIONACCESSORS_IID,
00099   NS_IXFORMSRANGEACCESSORS_IID
00100 };
00101 
00102 NS_IMETHODIMP
00103 nsXFormsRangeAccessors::GetInterfaces(PRUint32 *aCount, nsIID * **aArray)
00104 {
00105   return nsXFormsUtils::CloneScriptingInterfaces(sScriptingIIDs,
00106                                                  NS_ARRAY_LENGTH(sScriptingIIDs),
00107                                                  aCount, aArray);
00108 }