LCOV - code coverage report
Current view: directory - layout/style - nsDOMCSSAttrDeclaration.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 69 2 2.9 %
Date: 2012-06-02 Functions: 20 2 10.0 %

       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                 :  *   Ms2ger <ms2ger@gmail.com>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : /* DOM object for element.style */
      40                 : 
      41                 : #include "nsDOMCSSAttrDeclaration.h"
      42                 : 
      43                 : #include "mozilla/css/Declaration.h"
      44                 : #include "mozilla/css/Loader.h"
      45                 : #include "mozilla/css/StyleRule.h"
      46                 : #include "mozilla/dom/Element.h"
      47                 : #include "nsIDocument.h"
      48                 : #include "nsIDOMMutationEvent.h"
      49                 : #include "nsIPrincipal.h"
      50                 : #include "nsIURI.h"
      51                 : #include "nsNodeUtils.h"
      52                 : #include "nsGenericElement.h"
      53                 : 
      54                 : namespace css = mozilla::css;
      55                 : namespace dom = mozilla::dom;
      56                 : 
      57               0 : nsDOMCSSAttributeDeclaration::nsDOMCSSAttributeDeclaration(dom::Element* aElement,
      58                 :                                                            bool aIsSMILOverride)
      59                 :   : mElement(aElement)
      60               0 :   , mIsSMILOverride(aIsSMILOverride)
      61                 : {
      62               0 :   MOZ_COUNT_CTOR(nsDOMCSSAttributeDeclaration);
      63                 : 
      64               0 :   NS_ASSERTION(aElement, "Inline style for a NULL element?");
      65               0 : }
      66                 : 
      67               0 : nsDOMCSSAttributeDeclaration::~nsDOMCSSAttributeDeclaration()
      68                 : {
      69               0 :   MOZ_COUNT_DTOR(nsDOMCSSAttributeDeclaration);
      70               0 : }
      71                 : 
      72                 : // If nsDOMCSSAttributeDeclaration is changed so that any additional
      73                 : // fields are traversed by the cycle collector (for instance, if
      74                 : // wrapper cache handling is changed) then CAN_SKIP must be updated.
      75            1464 : NS_IMPL_CYCLE_COLLECTION_1(nsDOMCSSAttributeDeclaration, mElement)
      76                 : 
      77                 : // nsDOMCSSAttributeDeclaration has only one cycle collected field, so
      78                 : // if mElement is going to be skipped, the attribute declaration can't
      79                 : // be part of a garbage cycle.
      80               0 : NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(nsDOMCSSAttributeDeclaration)
      81               0 :   return !tmp->mElement || nsGenericElement::CanSkip(tmp->mElement, true);
      82                 : NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
      83                 : 
      84               0 : NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(nsDOMCSSAttributeDeclaration)
      85               0 :   return !tmp->mElement || nsGenericElement::CanSkipInCC(tmp->mElement);
      86                 : NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
      87                 : 
      88                 : // CanSkipThis returns false to avoid problems with incomplete unlinking.
      89               0 : NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(nsDOMCSSAttributeDeclaration)
      90               0 : NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
      91                 : 
      92               0 : NS_INTERFACE_MAP_BEGIN(nsDOMCSSAttributeDeclaration)
      93               0 :   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
      94               0 :   NS_INTERFACE_MAP_ENTRIES_CYCLE_COLLECTION(nsDOMCSSAttributeDeclaration)
      95               0 : NS_IMPL_QUERY_TAIL_INHERITING(nsDOMCSSDeclaration)
      96                 : 
      97               0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMCSSAttributeDeclaration)
      98               0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMCSSAttributeDeclaration)
      99                 : 
     100                 : nsresult
     101               0 : nsDOMCSSAttributeDeclaration::SetCSSDeclaration(css::Declaration* aDecl)
     102                 : {
     103               0 :   NS_ASSERTION(mElement, "Must have Element to set the declaration!");
     104                 :   css::StyleRule* oldRule =
     105               0 :     mIsSMILOverride ? mElement->GetSMILOverrideStyleRule() :
     106               0 :     mElement->GetInlineStyleRule();
     107               0 :   NS_ASSERTION(oldRule, "Element must have rule");
     108                 : 
     109                 :   nsRefPtr<css::StyleRule> newRule =
     110               0 :     oldRule->DeclarationChanged(aDecl, false);
     111               0 :   if (!newRule) {
     112               0 :     return NS_ERROR_OUT_OF_MEMORY;
     113                 :   }
     114                 : 
     115                 :   return
     116               0 :     mIsSMILOverride ? mElement->SetSMILOverrideStyleRule(newRule, true) :
     117               0 :     mElement->SetInlineStyleRule(newRule, true);
     118                 : }
     119                 : 
     120                 : nsIDocument*
     121               0 : nsDOMCSSAttributeDeclaration::DocToUpdate()
     122                 : {
     123                 :   // XXXbz this is a bit of a hack, especially doing it before the
     124                 :   // BeginUpdate(), but this is a good chokepoint where we know we
     125                 :   // plan to modify the CSSDeclaration, so need to notify
     126                 :   // AttributeWillChange if this is inline style.
     127               0 :   if (!mIsSMILOverride) {
     128                 :     nsNodeUtils::AttributeWillChange(mElement, kNameSpaceID_None,
     129                 :                                      nsGkAtoms::style,
     130               0 :                                      nsIDOMMutationEvent::MODIFICATION);
     131                 :   }
     132                 :  
     133                 :   // We need OwnerDoc() rather than GetCurrentDoc() because it might
     134                 :   // be the BeginUpdate call that inserts mElement into the document.
     135               0 :   return mElement->OwnerDoc();
     136                 : }
     137                 : 
     138                 : css::Declaration*
     139               0 : nsDOMCSSAttributeDeclaration::GetCSSDeclaration(bool aAllocate)
     140                 : {
     141               0 :   if (!mElement)
     142               0 :     return nsnull;
     143                 : 
     144                 :   css::StyleRule* cssRule;
     145               0 :   if (mIsSMILOverride)
     146               0 :     cssRule = mElement->GetSMILOverrideStyleRule();
     147                 :   else
     148               0 :     cssRule = mElement->GetInlineStyleRule();
     149                 : 
     150               0 :   if (cssRule) {
     151               0 :     return cssRule->GetDeclaration();
     152                 :   }
     153               0 :   if (!aAllocate) {
     154               0 :     return nsnull;
     155                 :   }
     156                 : 
     157                 :   // cannot fail
     158               0 :   css::Declaration *decl = new css::Declaration();
     159               0 :   decl->InitializeEmpty();
     160               0 :   nsRefPtr<css::StyleRule> newRule = new css::StyleRule(nsnull, decl);
     161                 : 
     162                 :   // this *can* fail (inside SetAttrAndNotify, at least).
     163                 :   nsresult rv;
     164               0 :   if (mIsSMILOverride)
     165               0 :     rv = mElement->SetSMILOverrideStyleRule(newRule, false);
     166                 :   else
     167               0 :     rv = mElement->SetInlineStyleRule(newRule, false);
     168                 : 
     169               0 :   if (NS_FAILED(rv)) {
     170               0 :     return nsnull; // the decl will be destroyed along with the style rule
     171                 :   }
     172                 : 
     173               0 :   return decl;
     174                 : }
     175                 : 
     176                 : void
     177               0 : nsDOMCSSAttributeDeclaration::GetCSSParsingEnvironment(CSSParsingEnvironment& aCSSParseEnv)
     178                 : {
     179               0 :   NS_ASSERTION(mElement, "Something is severely broken -- there should be an Element here!");
     180                 : 
     181               0 :   nsIDocument* doc = mElement->OwnerDoc();
     182               0 :   aCSSParseEnv.mSheetURI = doc->GetDocumentURI();
     183               0 :   aCSSParseEnv.mBaseURI = mElement->GetBaseURI();
     184               0 :   aCSSParseEnv.mPrincipal = mElement->NodePrincipal();
     185               0 :   aCSSParseEnv.mCSSLoader = doc->CSSLoader();
     186               0 : }
     187                 : 
     188                 : NS_IMETHODIMP
     189               0 : nsDOMCSSAttributeDeclaration::GetParentRule(nsIDOMCSSRule **aParent)
     190                 : {
     191               0 :   NS_ENSURE_ARG_POINTER(aParent);
     192                 : 
     193               0 :   *aParent = nsnull;
     194               0 :   return NS_OK;
     195                 : }
     196                 : 
     197                 : /* virtual */ nsINode*
     198               0 : nsDOMCSSAttributeDeclaration::GetParentObject()
     199                 : {
     200               0 :   return mElement;
     201            4392 : }

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