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lightning-sunbird  0.9+nobinonly
nsXFormsCaseElement.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 "nsXFormsStubElement.h"
00040 #include "nsXFormsAtoms.h"
00041 #include "nsXFormsUtils.h"
00042 #include "nsIXFormsCaseElement.h"
00043 #include "nsIXFormsCaseUIElement.h"
00044 #include "nsIXFormsSwitchElement.h"
00045 #include "nsCOMPtr.h"
00046 #include "nsIDOMElement.h"
00047 #include "nsString.h"
00048 #include "nsIXTFBindableElementWrapper.h"
00049 
00054 class nsXFormsCaseElement : public nsXFormsBindableStub,
00055                             public nsIXFormsCaseElement
00056 {
00057 public:
00058   NS_DECL_ISUPPORTS_INHERITED
00059   NS_DECL_NSIXFORMSCASEELEMENT
00060 
00061   NS_IMETHOD OnCreated(nsIXTFBindableElementWrapper *aWrapper);
00062   NS_IMETHOD OnDestroyed();
00063   NS_IMETHOD DoneAddingChildren();
00064 
00065   nsXFormsCaseElement()
00066   : mElement(nsnull), mSelected(PR_FALSE), mCachedSelectedAttr(PR_FALSE)
00067   {
00068   }
00069 
00070 protected:
00071   nsIDOMElement* mElement;
00072   PRPackedBool   mSelected;
00073   PRPackedBool   mCachedSelectedAttr;
00074 };
00075 
00076 NS_IMPL_ISUPPORTS_INHERITED1(nsXFormsCaseElement,
00077                              nsXFormsBindableStub,
00078                              nsIXFormsCaseElement)
00079 
00080 NS_IMETHODIMP
00081 nsXFormsCaseElement::OnCreated(nsIXTFBindableElementWrapper *aWrapper)
00082 {
00083   nsresult rv = nsXFormsBindableStub::OnCreated(aWrapper);
00084   NS_ENSURE_SUCCESS(rv, rv);
00085 
00086   aWrapper->SetNotificationMask(nsIXTFElement::NOTIFY_DONE_ADDING_CHILDREN);
00087 
00088   nsCOMPtr<nsIDOMElement> node;
00089   aWrapper->GetElementNode(getter_AddRefs(node));
00090 
00091   // It's ok to keep a pointer to mElement.  mElement will have an
00092   // owning reference to this object, so as long as we null out mElement in
00093   // OnDestroyed, it will always be valid.
00094 
00095   mElement = node;
00096 
00097   return NS_OK;
00098 }
00099 
00100 NS_IMETHODIMP
00101 nsXFormsCaseElement::OnDestroyed()
00102 {
00103   mElement = nsnull;
00104   return NS_OK;
00105 }
00106 
00107 NS_IMETHODIMP
00108 nsXFormsCaseElement::DoneAddingChildren()
00109 {
00110   // cache the value of the "selected" attr
00111   nsAutoString value;
00112   mElement->GetAttribute(NS_LITERAL_STRING("selected"), value);
00113   if (value.EqualsLiteral("true") || value.EqualsLiteral("1")) {
00114     mCachedSelectedAttr = PR_TRUE;
00115   }
00116 
00117   return NS_OK;
00118 }
00119 
00120 NS_IMETHODIMP
00121 nsXFormsCaseElement::GetInitialSelectedState(PRBool *aInitialSelectedState)
00122 {
00123   *aInitialSelectedState = mCachedSelectedAttr;
00124   return NS_OK;
00125 }
00126 
00127 NS_IMETHODIMP
00128 nsXFormsCaseElement::SetSelected(PRBool aEnable)
00129 {
00130   mSelected = aEnable;
00131 
00132   nsCOMPtr<nsIXFormsCaseUIElement> caseUI(do_QueryInterface(mElement));
00133   if (!caseUI)
00134     return NS_ERROR_FAILURE;
00135 
00136   caseUI->CaseSelected(mSelected);
00137   return NS_OK;
00138 }
00139 
00140 NS_IMETHODIMP
00141 nsXFormsCaseElement::WidgetAttached()
00142 {
00143   nsCOMPtr<nsIXFormsCaseUIElement> caseUI(do_QueryInterface(mElement));
00144   NS_WARN_IF_FALSE(caseUI,
00145                    "Case element not implementing nsIXFormCaseUIElement?");
00146   if (caseUI) {
00147     caseUI->CaseSelected(mSelected);
00148   }
00149 
00150   return NS_OK;
00151 }
00152 
00153 NS_HIDDEN_(nsresult)
00154 NS_NewXFormsCaseElement(nsIXTFElement **aResult)
00155 {
00156   *aResult = new nsXFormsCaseElement();
00157   if (!*aResult)
00158     return NS_ERROR_OUT_OF_MEMORY;
00159 
00160   NS_ADDREF(*aResult);
00161   return NS_OK;
00162 }