LCOV - code coverage report
Current view: directory - content/html/content/src - nsHTMLOutputElement.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 104 3 2.9 %
Date: 2012-06-02 Functions: 139 3 2.2 %

       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.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Mozilla Foundation
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2010
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Mounir Lamouri <mounir.lamouri@mozilla.com> (original author)
      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 "nsIDOMHTMLOutputElement.h"
      39                 : #include "nsGenericHTMLElement.h"
      40                 : #include "nsFormSubmission.h"
      41                 : #include "nsDOMSettableTokenList.h"
      42                 : #include "nsStubMutationObserver.h"
      43                 : #include "nsIConstraintValidation.h"
      44                 : #include "nsEventStates.h"
      45                 : #include "mozAutoDocUpdate.h"
      46                 : #include "nsHTMLFormElement.h"
      47                 : 
      48                 : 
      49                 : class nsHTMLOutputElement : public nsGenericHTMLFormElement,
      50                 :                             public nsIDOMHTMLOutputElement,
      51                 :                             public nsStubMutationObserver,
      52                 :                             public nsIConstraintValidation
      53                 : {
      54                 : public:
      55                 :   using nsIConstraintValidation::GetValidationMessage;
      56                 : 
      57                 :   nsHTMLOutputElement(already_AddRefed<nsINodeInfo> aNodeInfo);
      58                 :   virtual ~nsHTMLOutputElement();
      59                 : 
      60                 :   // nsISupports
      61                 :   NS_DECL_ISUPPORTS_INHERITED
      62                 : 
      63                 :   // nsIDOMNode
      64               0 :   NS_FORWARD_NSIDOMNODE(nsGenericHTMLFormElement::)
      65                 : 
      66                 :   // nsIDOMElement
      67               0 :   NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLFormElement::)
      68                 : 
      69                 :   // nsIDOMHTMLElement
      70               0 :   NS_FORWARD_NSIDOMHTMLELEMENT(nsGenericHTMLFormElement::)
      71                 : 
      72                 :   // nsIDOMHTMLOutputElement
      73                 :   NS_DECL_NSIDOMHTMLOUTPUTELEMENT
      74                 : 
      75                 :   // nsIFormControl
      76               0 :   NS_IMETHOD_(PRUint32) GetType() const { return NS_FORM_OUTPUT; }
      77                 :   NS_IMETHOD Reset();
      78                 :   NS_IMETHOD SubmitNamesValues(nsFormSubmission* aFormSubmission);
      79                 : 
      80               0 :   virtual bool IsDisabled() const { return false; }
      81                 : 
      82                 :   nsresult Clone(nsINodeInfo* aNodeInfo, nsINode** aResult) const;
      83                 : 
      84                 :   bool ParseAttribute(PRInt32 aNamespaceID, nsIAtom* aAttribute,
      85                 :                         const nsAString& aValue, nsAttrValue& aResult);
      86                 : 
      87                 :   nsEventStates IntrinsicState() const;
      88                 : 
      89                 :   virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
      90                 :                                nsIContent* aBindingParent,
      91                 :                                bool aCompileEventHandlers);
      92                 : 
      93                 :   // This function is called when a callback function from nsIMutationObserver
      94                 :   // has to be used to update the defaultValue attribute.
      95                 :   void DescendantsChanged();
      96                 : 
      97                 :   // nsIMutationObserver
      98                 :   NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
      99                 :   NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
     100                 :   NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
     101                 :   NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
     102                 : 
     103            1464 :   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(nsHTMLOutputElement,
     104                 :                                            nsGenericHTMLFormElement)
     105                 : 
     106                 :   virtual nsXPCClassInfo* GetClassInfo();
     107                 : protected:
     108                 :   enum ValueModeFlag {
     109                 :     eModeDefault,
     110                 :     eModeValue
     111                 :   };
     112                 : 
     113                 :   ValueModeFlag                     mValueModeFlag;
     114                 :   nsString                          mDefaultValue;
     115                 :   nsRefPtr<nsDOMSettableTokenList>  mTokenList;
     116                 : };
     117                 : 
     118                 : 
     119               0 : NS_IMPL_NS_NEW_HTML_ELEMENT(Output)
     120                 : 
     121                 : 
     122               0 : nsHTMLOutputElement::nsHTMLOutputElement(already_AddRefed<nsINodeInfo> aNodeInfo)
     123                 :   : nsGenericHTMLFormElement(aNodeInfo)
     124               0 :   , mValueModeFlag(eModeDefault)
     125                 : {
     126               0 :   AddMutationObserver(this);
     127                 : 
     128                 :   // We start out valid and ui-valid (since we have no form).
     129               0 :   AddStatesSilently(NS_EVENT_STATE_VALID | NS_EVENT_STATE_MOZ_UI_VALID);
     130               0 : }
     131                 : 
     132               0 : nsHTMLOutputElement::~nsHTMLOutputElement()
     133                 : {
     134               0 :   if (mTokenList) {
     135               0 :     mTokenList->DropReference();
     136                 :   }
     137               0 : }
     138                 : 
     139            1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(nsHTMLOutputElement)
     140               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsHTMLOutputElement,
     141                 :                                                 nsGenericHTMLFormElement)
     142               0 :   if (tmp->mTokenList) {
     143               0 :     tmp->mTokenList->DropReference();
     144               0 :     NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTokenList)
     145                 :   }
     146               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
     147               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsHTMLOutputElement,
     148                 :                                                   nsGenericHTMLFormElement)
     149               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mTokenList,
     150                 :                                                        nsDOMTokenList)
     151               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
     152                 : 
     153               0 : NS_IMPL_ADDREF_INHERITED(nsHTMLOutputElement, nsGenericElement)
     154               0 : NS_IMPL_RELEASE_INHERITED(nsHTMLOutputElement, nsGenericElement)
     155                 : 
     156               0 : DOMCI_NODE_DATA(HTMLOutputElement, nsHTMLOutputElement)
     157                 : 
     158               0 : NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(nsHTMLOutputElement)
     159               0 :   NS_HTML_CONTENT_INTERFACE_TABLE3(nsHTMLOutputElement,
     160                 :                                    nsIDOMHTMLOutputElement,
     161                 :                                    nsIMutationObserver,
     162                 :                                    nsIConstraintValidation)
     163               0 :   NS_HTML_CONTENT_INTERFACE_TABLE_TO_MAP_SEGUE(nsHTMLOutputElement,
     164                 :                                                nsGenericHTMLFormElement)
     165               0 : NS_HTML_CONTENT_INTERFACE_TABLE_TAIL_CLASSINFO(HTMLOutputElement)
     166                 : 
     167               0 : NS_IMPL_ELEMENT_CLONE(nsHTMLOutputElement)
     168                 : 
     169                 : 
     170               0 : NS_IMPL_STRING_ATTR(nsHTMLOutputElement, Name, name)
     171                 : 
     172                 : // nsIConstraintValidation
     173               0 : NS_IMPL_NSICONSTRAINTVALIDATION_EXCEPT_SETCUSTOMVALIDITY(nsHTMLOutputElement)
     174                 : 
     175                 : NS_IMETHODIMP
     176               0 : nsHTMLOutputElement::SetCustomValidity(const nsAString& aError)
     177                 : {
     178               0 :   nsIConstraintValidation::SetCustomValidity(aError);
     179                 : 
     180               0 :   UpdateState(true);
     181                 : 
     182               0 :   return NS_OK;
     183                 : }
     184                 : 
     185                 : NS_IMETHODIMP
     186               0 : nsHTMLOutputElement::Reset()
     187                 : {
     188               0 :   mValueModeFlag = eModeDefault;
     189               0 :   return nsContentUtils::SetNodeTextContent(this, mDefaultValue, true);
     190                 : }
     191                 : 
     192                 : NS_IMETHODIMP
     193               0 : nsHTMLOutputElement::SubmitNamesValues(nsFormSubmission* aFormSubmission)
     194                 : {
     195                 :   // The output element is not submittable.
     196               0 :   return NS_OK;
     197                 : }
     198                 : 
     199                 : bool
     200               0 : nsHTMLOutputElement::ParseAttribute(PRInt32 aNamespaceID, nsIAtom* aAttribute,
     201                 :                                     const nsAString& aValue, nsAttrValue& aResult)
     202                 : {
     203               0 :   if (aNamespaceID == kNameSpaceID_None) {
     204               0 :     if (aAttribute == nsGkAtoms::_for) {
     205               0 :       aResult.ParseAtomArray(aValue);
     206               0 :       return true;
     207                 :     }
     208                 :   }
     209                 : 
     210                 :   return nsGenericHTMLFormElement::ParseAttribute(aNamespaceID, aAttribute,
     211               0 :                                                   aValue, aResult);
     212                 : }
     213                 : 
     214                 : nsEventStates
     215               0 : nsHTMLOutputElement::IntrinsicState() const
     216                 : {
     217               0 :   nsEventStates states = nsGenericHTMLFormElement::IntrinsicState();
     218                 : 
     219                 :   // We don't have to call IsCandidateForConstraintValidation()
     220                 :   // because <output> can't be barred from constraint validation.
     221               0 :   if (IsValid()) {
     222               0 :     states |= NS_EVENT_STATE_VALID;
     223               0 :     if (!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) {
     224               0 :       states |= NS_EVENT_STATE_MOZ_UI_VALID;
     225                 :     }
     226                 :   } else {
     227               0 :     states |= NS_EVENT_STATE_INVALID;
     228               0 :     if (!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) {
     229               0 :       states |= NS_EVENT_STATE_MOZ_UI_INVALID;
     230                 :     }
     231                 :   }
     232                 : 
     233                 :   return states;
     234                 : }
     235                 : 
     236                 : nsresult
     237               0 : nsHTMLOutputElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
     238                 :                                 nsIContent* aBindingParent,
     239                 :                                 bool aCompileEventHandlers)
     240                 : {
     241                 :   nsresult rv = nsGenericHTMLFormElement::BindToTree(aDocument, aParent,
     242                 :                                                      aBindingParent,
     243               0 :                                                      aCompileEventHandlers);
     244               0 :   NS_ENSURE_SUCCESS(rv, rv);
     245                 : 
     246                 :   // Unfortunately, we can actually end up having to change our state
     247                 :   // as a result of being bound to a tree even from the parser: we
     248                 :   // might end up a in a novalidate form, and unlike other form
     249                 :   // controls that on its own is enough to make change ui-valid state.
     250                 :   // So just go ahead and update our state now.
     251               0 :   UpdateState(false);
     252                 : 
     253               0 :   return rv;
     254                 : }
     255                 : 
     256                 : NS_IMETHODIMP
     257               0 : nsHTMLOutputElement::GetForm(nsIDOMHTMLFormElement** aForm)
     258                 : {
     259               0 :   return nsGenericHTMLFormElement::GetForm(aForm);
     260                 : }
     261                 : 
     262                 : NS_IMETHODIMP
     263               0 : nsHTMLOutputElement::GetType(nsAString& aType)
     264                 : {
     265               0 :   aType.AssignLiteral("output");
     266               0 :   return NS_OK;
     267                 : }
     268                 : 
     269                 : NS_IMETHODIMP
     270               0 : nsHTMLOutputElement::GetValue(nsAString& aValue)
     271                 : {
     272               0 :   nsContentUtils::GetNodeTextContent(this, true, aValue);
     273               0 :   return NS_OK;
     274                 : }
     275                 : 
     276                 : NS_IMETHODIMP
     277               0 : nsHTMLOutputElement::SetValue(const nsAString& aValue)
     278                 : {
     279               0 :   mValueModeFlag = eModeValue;
     280               0 :   return nsContentUtils::SetNodeTextContent(this, aValue, true);
     281                 : }
     282                 : 
     283                 : NS_IMETHODIMP
     284               0 : nsHTMLOutputElement::GetDefaultValue(nsAString& aDefaultValue)
     285                 : {
     286               0 :   aDefaultValue = mDefaultValue;
     287               0 :   return NS_OK;
     288                 : }
     289                 : 
     290                 : NS_IMETHODIMP
     291               0 : nsHTMLOutputElement::SetDefaultValue(const nsAString& aDefaultValue)
     292                 : {
     293               0 :   mDefaultValue = aDefaultValue;
     294               0 :   if (mValueModeFlag == eModeDefault) {
     295               0 :     return nsContentUtils::SetNodeTextContent(this, mDefaultValue, true);
     296                 :   }
     297                 : 
     298               0 :   return NS_OK;
     299                 : }
     300                 : 
     301                 : NS_IMETHODIMP
     302               0 : nsHTMLOutputElement::GetHtmlFor(nsIDOMDOMSettableTokenList** aResult)
     303                 : {
     304               0 :   if (!mTokenList) {
     305               0 :     mTokenList = new nsDOMSettableTokenList(this, nsGkAtoms::_for);
     306                 :   }
     307                 : 
     308               0 :   NS_ADDREF(*aResult = mTokenList);
     309                 : 
     310               0 :   return NS_OK;
     311                 : }
     312                 : 
     313               0 : void nsHTMLOutputElement::DescendantsChanged()
     314                 : {
     315               0 :   if (mValueModeFlag == eModeDefault) {
     316               0 :     nsContentUtils::GetNodeTextContent(this, true, mDefaultValue);
     317                 :   }
     318               0 : }
     319                 : 
     320                 : // nsIMutationObserver
     321                 : 
     322               0 : void nsHTMLOutputElement::CharacterDataChanged(nsIDocument* aDocument,
     323                 :                                                nsIContent* aContent,
     324                 :                                                CharacterDataChangeInfo* aInfo)
     325                 : {
     326               0 :   DescendantsChanged();
     327               0 : }
     328                 : 
     329               0 : void nsHTMLOutputElement::ContentAppended(nsIDocument* aDocument,
     330                 :                                           nsIContent* aContainer,
     331                 :                                           nsIContent* aFirstNewContent,
     332                 :                                           PRInt32 aNewIndexInContainer)
     333                 : {
     334               0 :   DescendantsChanged();
     335               0 : }
     336                 : 
     337               0 : void nsHTMLOutputElement::ContentInserted(nsIDocument* aDocument,
     338                 :                                           nsIContent* aContainer,
     339                 :                                           nsIContent* aChild,
     340                 :                                           PRInt32 aIndexInContainer)
     341                 : {
     342               0 :   DescendantsChanged();
     343               0 : }
     344                 : 
     345               0 : void nsHTMLOutputElement::ContentRemoved(nsIDocument* aDocument,
     346                 :                                          nsIContent* aContainer,
     347                 :                                          nsIContent* aChild,
     348                 :                                          PRInt32 aIndexInContainer,
     349                 :                                          nsIContent* aPreviousSibling)
     350                 : {
     351               0 :   DescendantsChanged();
     352            4392 : }
     353                 : 

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