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lightning-sunbird  0.9+nobinonly
nsXFormsLoadElement.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  * Olli Pettay.
00019  * Portions created by the Initial Developer are Copyright (C) 2004
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Olli Pettay <Olli.Pettay@helsinki.fi> (original author)
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or 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 "nsXFormsActionModuleBase.h"
00040 #include "nsXFormsActionElement.h"
00041 #include "nsIDOMDocument.h"
00042 #include "nsIDOMWindowInternal.h"
00043 #include "nsIDOMLocation.h"
00044 #include "nsIDOMDocumentView.h"
00045 #include "nsIDOMAbstractView.h"
00046 #include "nsXFormsUtils.h"
00047 
00048 class nsXFormsLoadElement : public nsXFormsActionModuleBase
00049 {
00050 public:
00051   nsXFormsLoadElement();
00052   virtual nsresult HandleSingleAction(nsIDOMEvent* aEvent,
00053                                       nsIXFormsActionElement *aParentAction);
00054 };
00055 
00056 nsXFormsLoadElement::nsXFormsLoadElement()
00057 {
00058 }
00059 
00060 nsresult
00061 nsXFormsLoadElement::HandleSingleAction(nsIDOMEvent* aEvent,
00062                                         nsIXFormsActionElement* aParentAction)
00063 {
00064   //If the element has 'resource' and single node binding, the
00065   //action has no effect.
00066   PRBool hasBind;
00067   PRBool hasRef;
00068   mElement->HasAttribute(NS_LITERAL_STRING("bind"), &hasBind);
00069   mElement->HasAttribute(NS_LITERAL_STRING("ref"), &hasRef);
00070   nsAutoString resource;
00071   mElement->GetAttribute(NS_LITERAL_STRING("resource"), resource);
00072 
00073   if (!resource.IsEmpty() && (hasBind || hasRef))
00074     return NS_OK;
00075   nsAutoString urlstr;
00076   if (!resource.IsEmpty())
00077     urlstr = resource;
00078   else if (!nsXFormsUtils::GetSingleNodeBindingValue(mElement, urlstr))
00079     return NS_OK;
00080 
00081   nsCOMPtr<nsIDOMDocument> doc;
00082   nsCOMPtr<nsIDOMWindowInternal> internal;
00083   mElement->GetOwnerDocument(getter_AddRefs(doc));
00084   nsXFormsUtils::GetWindowFromDocument(doc, getter_AddRefs(internal));
00085   if (!internal) {
00086     NS_ASSERTION(internal, "No AbstractView or it isn't an nsIDOMWindowInternal");
00087     return NS_OK;
00088   }
00089   
00090   PRBool openNew = PR_FALSE;
00091   nsAutoString show;
00092   mElement->GetAttribute(NS_LITERAL_STRING("show"), show);
00093   if (show.EqualsLiteral("new")) {
00094     openNew = PR_TRUE;
00095   }
00096   //Otherwise 'replace'
00097   if (openNew) {
00098     nsCOMPtr<nsIDOMWindow> messageWindow;
00099     internal->Open(urlstr, EmptyString(), EmptyString(),
00100                    getter_AddRefs(messageWindow));
00101   }
00102   else {
00103     nsCOMPtr<nsIDOMLocation> location;
00104     internal->GetLocation(getter_AddRefs(location));
00105     if (location)
00106       location->Assign(urlstr);
00107   }
00108   return NS_OK;
00109 }
00110 
00111 NS_HIDDEN_(nsresult)
00112 NS_NewXFormsLoadElement(nsIXTFElement **aResult)
00113 {
00114   *aResult = new nsXFormsLoadElement();
00115   if (!*aResult)
00116     return NS_ERROR_OUT_OF_MEMORY;
00117 
00118   NS_ADDREF(*aResult);
00119   return NS_OK;
00120 }
00121