LCOV - code coverage report
Current view: directory - content/html/content/src - nsHTMLFieldSetElement.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 98 2 2.0 %
Date: 2012-06-02 Functions: 34 2 5.9 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Communicator client code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "nsHTMLFieldSetElement.h"
      39                 : #include "nsIDOMHTMLFormElement.h"
      40                 : #include "nsIDOMEventTarget.h"
      41                 : #include "nsStyleConsts.h"
      42                 : #include "nsIForm.h"
      43                 : #include "nsIFormControl.h"
      44                 : #include "nsGUIEvent.h"
      45                 : #include "nsEventDispatcher.h"
      46                 : 
      47                 : 
      48               0 : NS_IMPL_NS_NEW_HTML_ELEMENT(FieldSet)
      49                 : 
      50                 : 
      51               0 : nsHTMLFieldSetElement::nsHTMLFieldSetElement(already_AddRefed<nsINodeInfo> aNodeInfo)
      52                 :   : nsGenericHTMLFormElement(aNodeInfo)
      53                 :   , mElements(nsnull)
      54               0 :   , mFirstLegend(nsnull)
      55                 : {
      56                 :   // <fieldset> is always barred from constraint validation.
      57               0 :   SetBarredFromConstraintValidation(true);
      58                 : 
      59                 :   // We start out enabled
      60               0 :   AddStatesSilently(NS_EVENT_STATE_ENABLED);
      61               0 : }
      62                 : 
      63               0 : nsHTMLFieldSetElement::~nsHTMLFieldSetElement()
      64                 : {
      65               0 :   PRUint32 length = mDependentElements.Length();
      66               0 :   for (PRUint32 i = 0; i < length; ++i) {
      67               0 :     mDependentElements[i]->ForgetFieldSet(this);
      68                 :   }
      69               0 : }
      70                 : 
      71                 : // nsISupports
      72                 : 
      73               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsHTMLFieldSetElement,
      74                 :                                                 nsGenericHTMLFormElement)
      75               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mElements)
      76               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
      77                 : 
      78            1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(nsHTMLFieldSetElement)
      79               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsHTMLFieldSetElement,
      80                 :                                                   nsGenericHTMLFormElement)
      81               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mElements, nsIDOMNodeList)
      82               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
      83                 : 
      84               0 : NS_IMPL_ADDREF_INHERITED(nsHTMLFieldSetElement, nsGenericElement)
      85               0 : NS_IMPL_RELEASE_INHERITED(nsHTMLFieldSetElement, nsGenericElement)
      86                 : 
      87               0 : DOMCI_NODE_DATA(HTMLFieldSetElement, nsHTMLFieldSetElement)
      88                 : 
      89                 : // QueryInterface implementation for nsHTMLFieldSetElement
      90               0 : NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(nsHTMLFieldSetElement)
      91               0 :   NS_HTML_CONTENT_INTERFACE_TABLE2(nsHTMLFieldSetElement,
      92                 :                                    nsIDOMHTMLFieldSetElement,
      93                 :                                    nsIConstraintValidation)
      94               0 :   NS_HTML_CONTENT_INTERFACE_TABLE_TO_MAP_SEGUE(nsHTMLFieldSetElement,
      95                 :                                                nsGenericHTMLFormElement)
      96               0 : NS_HTML_CONTENT_INTERFACE_TABLE_TAIL_CLASSINFO(HTMLFieldSetElement)
      97                 : 
      98               0 : NS_IMPL_ELEMENT_CLONE(nsHTMLFieldSetElement)
      99                 : 
     100                 : 
     101               0 : NS_IMPL_BOOL_ATTR(nsHTMLFieldSetElement, Disabled, disabled)
     102               0 : NS_IMPL_STRING_ATTR(nsHTMLFieldSetElement, Name, name)
     103                 : 
     104                 : // nsIConstraintValidation
     105               0 : NS_IMPL_NSICONSTRAINTVALIDATION(nsHTMLFieldSetElement)
     106                 : 
     107                 : // nsIContent
     108                 : nsresult
     109               0 : nsHTMLFieldSetElement::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
     110                 : {
     111                 :   // Do not process any DOM events if the element is disabled.
     112               0 :   aVisitor.mCanHandle = false;
     113               0 :   if (IsElementDisabledForEvents(aVisitor.mEvent->message, NULL)) {
     114               0 :     return NS_OK;
     115                 :   }
     116                 : 
     117               0 :   return nsGenericHTMLFormElement::PreHandleEvent(aVisitor);
     118                 : }
     119                 : 
     120                 : nsresult
     121               0 : nsHTMLFieldSetElement::AfterSetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
     122                 :                                     const nsAttrValue* aValue, bool aNotify)
     123                 : {
     124               0 :   if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::disabled &&
     125               0 :       nsINode::GetFirstChild()) {
     126               0 :     if (!mElements) {
     127                 :       mElements = new nsContentList(this, MatchListedElements, nsnull, nsnull,
     128               0 :                                     true);
     129                 :     }
     130                 : 
     131               0 :     PRUint32 length = mElements->Length(true);
     132               0 :     for (PRUint32 i=0; i<length; ++i) {
     133               0 :       static_cast<nsGenericHTMLFormElement*>(mElements->GetNodeAt(i))
     134               0 :         ->FieldSetDisabledChanged(aNotify);
     135                 :     }
     136                 :   }
     137                 : 
     138                 :   return nsGenericHTMLFormElement::AfterSetAttr(aNameSpaceID, aName,
     139               0 :                                                 aValue, aNotify);
     140                 : }
     141                 : 
     142                 : // nsIDOMHTMLFieldSetElement
     143                 : 
     144                 : NS_IMETHODIMP
     145               0 : nsHTMLFieldSetElement::GetForm(nsIDOMHTMLFormElement** aForm)
     146                 : {
     147               0 :   return nsGenericHTMLFormElement::GetForm(aForm);
     148                 : }
     149                 : 
     150                 : NS_IMETHODIMP
     151               0 : nsHTMLFieldSetElement::GetType(nsAString& aType)
     152                 : {
     153               0 :   aType.AssignLiteral("fieldset");
     154               0 :   return NS_OK;
     155                 : }
     156                 : 
     157                 : /* static */
     158                 : bool
     159               0 : nsHTMLFieldSetElement::MatchListedElements(nsIContent* aContent, PRInt32 aNamespaceID,
     160                 :                                            nsIAtom* aAtom, void* aData)
     161                 : {
     162               0 :   nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(aContent);
     163               0 :   return formControl && formControl->GetType() != NS_FORM_LABEL &&
     164               0 :                         formControl->GetType() != NS_FORM_PROGRESS;
     165                 : }
     166                 : 
     167                 : NS_IMETHODIMP
     168               0 : nsHTMLFieldSetElement::GetElements(nsIDOMHTMLCollection** aElements)
     169                 : {
     170               0 :   if (!mElements) {
     171                 :     mElements = new nsContentList(this, MatchListedElements, nsnull, nsnull,
     172               0 :                                   true);
     173                 :   }
     174                 : 
     175               0 :   NS_ADDREF(*aElements = mElements);
     176               0 :   return NS_OK;
     177                 : }
     178                 : 
     179                 : // nsIFormControl
     180                 : 
     181                 : nsresult
     182               0 : nsHTMLFieldSetElement::Reset()
     183                 : {
     184               0 :   return NS_OK;
     185                 : }
     186                 : 
     187                 : NS_IMETHODIMP
     188               0 : nsHTMLFieldSetElement::SubmitNamesValues(nsFormSubmission* aFormSubmission)
     189                 : {
     190               0 :   return NS_OK;
     191                 : }
     192                 : 
     193                 : nsresult
     194               0 : nsHTMLFieldSetElement::InsertChildAt(nsIContent* aChild, PRUint32 aIndex,
     195                 :                                      bool aNotify)
     196                 : {
     197               0 :   bool firstLegendHasChanged = false;
     198                 : 
     199               0 :   if (aChild->IsHTML(nsGkAtoms::legend)) {
     200               0 :     if (!mFirstLegend) {
     201               0 :       mFirstLegend = aChild;
     202                 :       // We do not want to notify the first time mFirstElement is set.
     203                 :     } else {
     204                 :       // If mFirstLegend is before aIndex, we do not change it.
     205                 :       // Otherwise, mFirstLegend is now aChild.
     206               0 :       if (PRInt32(aIndex) <= IndexOf(mFirstLegend)) {
     207               0 :         mFirstLegend = aChild;
     208               0 :         firstLegendHasChanged = true;
     209                 :       }
     210                 :     }
     211                 :   }
     212                 : 
     213               0 :   nsresult rv = nsGenericHTMLFormElement::InsertChildAt(aChild, aIndex, aNotify);
     214               0 :   NS_ENSURE_SUCCESS(rv, rv);
     215                 : 
     216               0 :   if (firstLegendHasChanged) {
     217               0 :     NotifyElementsForFirstLegendChange(aNotify);
     218                 :   }
     219                 : 
     220               0 :   return rv;
     221                 : }
     222                 : 
     223                 : nsresult
     224               0 : nsHTMLFieldSetElement::RemoveChildAt(PRUint32 aIndex, bool aNotify)
     225                 : {
     226               0 :   bool firstLegendHasChanged = false;
     227                 : 
     228               0 :   if (mFirstLegend && (GetChildAt(aIndex) == mFirstLegend)) {
     229                 :     // If we are removing the first legend we have to found another one.
     230               0 :     nsIContent* child = mFirstLegend->GetNextSibling();
     231               0 :     mFirstLegend = nsnull;
     232               0 :     firstLegendHasChanged = true;
     233                 : 
     234               0 :     for (; child; child = child->GetNextSibling()) {
     235               0 :       if (child->IsHTML(nsGkAtoms::legend)) {
     236               0 :         mFirstLegend = child;
     237               0 :         break;
     238                 :       }
     239                 :     }
     240                 :   }
     241                 : 
     242               0 :   nsresult rv = nsGenericHTMLFormElement::RemoveChildAt(aIndex, aNotify);
     243               0 :   NS_ENSURE_SUCCESS(rv, rv);
     244                 : 
     245               0 :   if (firstLegendHasChanged) {
     246               0 :     NotifyElementsForFirstLegendChange(aNotify);
     247                 :   }
     248                 : 
     249               0 :   return rv;
     250                 : }
     251                 : 
     252                 : void
     253               0 : nsHTMLFieldSetElement::NotifyElementsForFirstLegendChange(bool aNotify)
     254                 : {
     255                 :   /**
     256                 :    * NOTE: this could be optimized if only call when the fieldset is currently
     257                 :    * disabled.
     258                 :    * This should also make sure that mElements is set when we happen to be here.
     259                 :    * However, this method shouldn't be called very often in normal use cases.
     260                 :    */
     261               0 :   if (!mElements) {
     262                 :     mElements = new nsContentList(this, MatchListedElements, nsnull, nsnull,
     263               0 :                                   true);
     264                 :   }
     265                 : 
     266               0 :   PRUint32 length = mElements->Length(true);
     267               0 :   for (PRUint32 i = 0; i < length; ++i) {
     268               0 :     static_cast<nsGenericHTMLFormElement*>(mElements->GetNodeAt(i))
     269               0 :       ->FieldSetFirstLegendChanged(aNotify);
     270                 :   }
     271            4392 : }
     272                 : 

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