LCOV - code coverage report
Current view: directory - layout/style - StyleRule.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 684 69 10.1 %
Date: 2012-06-02 Functions: 104 11 10.6 %

       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
      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                 :  *   David Hyatt <hyatt@netscape.com>
      24                 :  *   Daniel Glazman <glazman@netscape.com>
      25                 :  *   L. David Baron <dbaron@dbaron.org>, Mozilla Corporation
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      29                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      31                 :  * of those above. If you wish to allow use of your version of this file only
      32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      33                 :  * use your version of this file under the terms of the MPL, indicate your
      34                 :  * decision by deleting the provisions above and replace them with the notice
      35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      36                 :  * the provisions above, a recipient may use your version of this file under
      37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      38                 :  *
      39                 :  * ***** END LICENSE BLOCK ***** */
      40                 : 
      41                 : /*
      42                 :  * representation of CSS style rules (selectors+declaration), CSS
      43                 :  * selectors, and DOM objects for style rules, selectors, and
      44                 :  * declarations
      45                 :  */
      46                 : 
      47                 : #include "mozilla/css/StyleRule.h"
      48                 : #include "mozilla/css/GroupRule.h"
      49                 : #include "mozilla/css/Declaration.h"
      50                 : #include "nsCSSStyleSheet.h"
      51                 : #include "mozilla/css/Loader.h"
      52                 : #include "nsIURL.h"
      53                 : #include "nsIDocument.h"
      54                 : #include "nsIAtom.h"
      55                 : #include "nsCRT.h"
      56                 : #include "nsString.h"
      57                 : #include "nsStyleConsts.h"
      58                 : #include "nsStyleUtil.h"
      59                 : #include "nsIDOMCSSStyleSheet.h"
      60                 : #include "nsICSSStyleRuleDOMWrapper.h"
      61                 : #include "nsIDOMCSSStyleDeclaration.h"
      62                 : #include "nsDOMCSSDeclaration.h"
      63                 : #include "nsINameSpaceManager.h"
      64                 : #include "nsXMLNameSpaceMap.h"
      65                 : #include "nsRuleNode.h"
      66                 : #include "nsUnicharUtils.h"
      67                 : #include "nsCSSPseudoElements.h"
      68                 : #include "nsIPrincipal.h"
      69                 : #include "nsComponentManagerUtils.h"
      70                 : #include "nsCSSPseudoClasses.h"
      71                 : #include "nsCSSAnonBoxes.h"
      72                 : #include "nsTArray.h"
      73                 : 
      74                 : #include "nsContentUtils.h"
      75                 : #include "nsContentErrors.h"
      76                 : #include "mozAutoDocUpdate.h"
      77                 : 
      78                 : #include "prlog.h"
      79                 : 
      80                 : namespace css = mozilla::css;
      81                 : 
      82                 : #define NS_IF_CLONE(member_)                                                  \
      83                 :   PR_BEGIN_MACRO                                                              \
      84                 :     if (member_) {                                                            \
      85                 :       result->member_ = member_->Clone();                                     \
      86                 :       if (!result->member_) {                                                 \
      87                 :         delete result;                                                        \
      88                 :         return nsnull;                                                        \
      89                 :       }                                                                       \
      90                 :     }                                                                         \
      91                 :   PR_END_MACRO
      92                 : 
      93                 : #define NS_IF_DELETE(ptr)                                                     \
      94                 :   PR_BEGIN_MACRO                                                              \
      95                 :     delete ptr;                                                               \
      96                 :     ptr = nsnull;                                                             \
      97                 :   PR_END_MACRO
      98                 : 
      99                 : /* ************************************************************************** */
     100                 : 
     101               0 : nsAtomList::nsAtomList(nsIAtom* aAtom)
     102                 :   : mAtom(aAtom),
     103               0 :     mNext(nsnull)
     104                 : {
     105               0 :   MOZ_COUNT_CTOR(nsAtomList);
     106               0 : }
     107                 : 
     108               0 : nsAtomList::nsAtomList(const nsString& aAtomValue)
     109                 :   : mAtom(nsnull),
     110               0 :     mNext(nsnull)
     111                 : {
     112               0 :   MOZ_COUNT_CTOR(nsAtomList);
     113               0 :   mAtom = do_GetAtom(aAtomValue);
     114               0 : }
     115                 : 
     116                 : nsAtomList*
     117               0 : nsAtomList::Clone(bool aDeep) const
     118                 : {
     119               0 :   nsAtomList *result = new nsAtomList(mAtom);
     120               0 :   if (!result)
     121               0 :     return nsnull;
     122                 : 
     123               0 :   if (aDeep)
     124               0 :     NS_CSS_CLONE_LIST_MEMBER(nsAtomList, this, mNext, result, (false));
     125               0 :   return result;
     126                 : }
     127                 : 
     128                 : size_t
     129               0 : nsAtomList::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
     130                 : {
     131               0 :   size_t n = 0;
     132               0 :   const nsAtomList* a = this;
     133               0 :   while (a) {
     134               0 :     n += aMallocSizeOf(a);
     135                 : 
     136                 :     // The following members aren't measured:
     137                 :     // - a->mAtom, because it may be shared
     138                 : 
     139               0 :     a = a->mNext;
     140                 :   }
     141               0 :   return n;
     142                 : }
     143                 : 
     144               0 : nsAtomList::~nsAtomList(void)
     145                 : {
     146               0 :   MOZ_COUNT_DTOR(nsAtomList);
     147               0 :   NS_CSS_DELETE_LIST_MEMBER(nsAtomList, this, mNext);
     148               0 : }
     149                 : 
     150               0 : nsPseudoClassList::nsPseudoClassList(nsCSSPseudoClasses::Type aType)
     151                 :   : mType(aType),
     152               0 :     mNext(nsnull)
     153                 : {
     154               0 :   NS_ASSERTION(!nsCSSPseudoClasses::HasStringArg(aType) &&
     155                 :                !nsCSSPseudoClasses::HasNthPairArg(aType),
     156                 :                "unexpected pseudo-class");
     157               0 :   MOZ_COUNT_CTOR(nsPseudoClassList);
     158               0 :   u.mMemory = nsnull;
     159               0 : }
     160                 : 
     161               0 : nsPseudoClassList::nsPseudoClassList(nsCSSPseudoClasses::Type aType,
     162                 :                                      const PRUnichar* aString)
     163                 :   : mType(aType),
     164               0 :     mNext(nsnull)
     165                 : {
     166               0 :   NS_ASSERTION(nsCSSPseudoClasses::HasStringArg(aType),
     167                 :                "unexpected pseudo-class");
     168               0 :   NS_ASSERTION(aString, "string expected");
     169               0 :   MOZ_COUNT_CTOR(nsPseudoClassList);
     170               0 :   u.mString = NS_strdup(aString);
     171               0 : }
     172                 : 
     173               0 : nsPseudoClassList::nsPseudoClassList(nsCSSPseudoClasses::Type aType,
     174                 :                                      const PRInt32* aIntPair)
     175                 :   : mType(aType),
     176               0 :     mNext(nsnull)
     177                 : {
     178               0 :   NS_ASSERTION(nsCSSPseudoClasses::HasNthPairArg(aType),
     179                 :                "unexpected pseudo-class");
     180               0 :   NS_ASSERTION(aIntPair, "integer pair expected");
     181               0 :   MOZ_COUNT_CTOR(nsPseudoClassList);
     182                 :   u.mNumbers =
     183               0 :     static_cast<PRInt32*>(nsMemory::Clone(aIntPair, sizeof(PRInt32) * 2));
     184               0 : }
     185                 : 
     186                 : // adopts aSelectorList
     187               0 : nsPseudoClassList::nsPseudoClassList(nsCSSPseudoClasses::Type aType,
     188                 :                                      nsCSSSelectorList* aSelectorList)
     189                 :   : mType(aType),
     190               0 :     mNext(nsnull)
     191                 : {
     192               0 :   NS_ASSERTION(nsCSSPseudoClasses::HasSelectorListArg(aType),
     193                 :                "unexpected pseudo-class");
     194               0 :   NS_ASSERTION(aSelectorList, "selector list expected");
     195               0 :   MOZ_COUNT_CTOR(nsPseudoClassList);
     196               0 :   u.mSelectors = aSelectorList;
     197               0 : }
     198                 : 
     199                 : nsPseudoClassList*
     200               0 : nsPseudoClassList::Clone(bool aDeep) const
     201                 : {
     202                 :   nsPseudoClassList *result;
     203               0 :   if (!u.mMemory) {
     204               0 :     result = new nsPseudoClassList(mType);
     205               0 :   } else if (nsCSSPseudoClasses::HasStringArg(mType)) {
     206               0 :     result = new nsPseudoClassList(mType, u.mString);
     207               0 :   } else if (nsCSSPseudoClasses::HasNthPairArg(mType)) {
     208               0 :     result = new nsPseudoClassList(mType, u.mNumbers);
     209                 :   } else {
     210               0 :     NS_ASSERTION(nsCSSPseudoClasses::HasSelectorListArg(mType),
     211                 :                  "unexpected pseudo-class");
     212                 :     // This constructor adopts its selector list argument.
     213               0 :     result = new nsPseudoClassList(mType, u.mSelectors->Clone());
     214                 :   }
     215                 : 
     216               0 :   if (aDeep)
     217               0 :     NS_CSS_CLONE_LIST_MEMBER(nsPseudoClassList, this, mNext, result,
     218                 :                              (false));
     219                 : 
     220               0 :   return result;
     221                 : }
     222                 : 
     223                 : size_t
     224               0 : nsPseudoClassList::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
     225                 : {
     226               0 :   size_t n = 0;
     227               0 :   const nsPseudoClassList* p = this;
     228               0 :   while (p) {
     229               0 :     n += aMallocSizeOf(p);
     230               0 :     if (!p->u.mMemory) {
     231                 :       // do nothing
     232                 : 
     233               0 :     } else if (nsCSSPseudoClasses::HasStringArg(p->mType)) {
     234               0 :       n += aMallocSizeOf(p->u.mString);
     235                 : 
     236               0 :     } else if (nsCSSPseudoClasses::HasNthPairArg(p->mType)) {
     237               0 :       n += aMallocSizeOf(p->u.mNumbers);
     238                 : 
     239                 :     } else {
     240               0 :       NS_ASSERTION(nsCSSPseudoClasses::HasSelectorListArg(p->mType),
     241                 :                    "unexpected pseudo-class");
     242               0 :       n += p->u.mSelectors->SizeOfIncludingThis(aMallocSizeOf);
     243                 :     }
     244               0 :     p = p->mNext;
     245                 :   }
     246               0 :   return n;
     247                 : }
     248                 : 
     249               0 : nsPseudoClassList::~nsPseudoClassList(void)
     250                 : {
     251               0 :   MOZ_COUNT_DTOR(nsPseudoClassList);
     252               0 :   if (nsCSSPseudoClasses::HasSelectorListArg(mType)) {
     253               0 :     delete u.mSelectors;
     254               0 :   } else if (u.mMemory) {
     255               0 :     NS_Free(u.mMemory);
     256                 :   }
     257               0 :   NS_CSS_DELETE_LIST_MEMBER(nsPseudoClassList, this, mNext);
     258               0 : }
     259                 : 
     260               0 : nsAttrSelector::nsAttrSelector(PRInt32 aNameSpace, const nsString& aAttr)
     261                 :   : mValue(),
     262                 :     mNext(nsnull),
     263                 :     mLowercaseAttr(nsnull),
     264                 :     mCasedAttr(nsnull),
     265                 :     mNameSpace(aNameSpace),
     266                 :     mFunction(NS_ATTR_FUNC_SET),
     267               0 :     mCaseSensitive(1)
     268                 : {
     269               0 :   MOZ_COUNT_CTOR(nsAttrSelector);
     270                 : 
     271               0 :   nsAutoString lowercase;
     272               0 :   nsContentUtils::ASCIIToLower(aAttr, lowercase);
     273                 :   
     274               0 :   mCasedAttr = do_GetAtom(aAttr);
     275               0 :   mLowercaseAttr = do_GetAtom(lowercase);
     276               0 : }
     277                 : 
     278               0 : nsAttrSelector::nsAttrSelector(PRInt32 aNameSpace, const nsString& aAttr, PRUint8 aFunction, 
     279                 :                                const nsString& aValue, bool aCaseSensitive)
     280                 :   : mValue(aValue),
     281                 :     mNext(nsnull),
     282                 :     mLowercaseAttr(nsnull),
     283                 :     mCasedAttr(nsnull),
     284                 :     mNameSpace(aNameSpace),
     285                 :     mFunction(aFunction),
     286               0 :     mCaseSensitive(aCaseSensitive)
     287                 : {
     288               0 :   MOZ_COUNT_CTOR(nsAttrSelector);
     289                 : 
     290               0 :   nsAutoString lowercase;
     291               0 :   nsContentUtils::ASCIIToLower(aAttr, lowercase);
     292                 :   
     293               0 :   mCasedAttr = do_GetAtom(aAttr);
     294               0 :   mLowercaseAttr = do_GetAtom(lowercase);
     295               0 : }
     296                 : 
     297               0 : nsAttrSelector::nsAttrSelector(PRInt32 aNameSpace,  nsIAtom* aLowercaseAttr,
     298                 :                                nsIAtom* aCasedAttr, PRUint8 aFunction, 
     299                 :                                const nsString& aValue, bool aCaseSensitive)
     300                 :   : mValue(aValue),
     301                 :     mNext(nsnull),
     302                 :     mLowercaseAttr(aLowercaseAttr),
     303                 :     mCasedAttr(aCasedAttr),
     304                 :     mNameSpace(aNameSpace),
     305                 :     mFunction(aFunction),
     306               0 :     mCaseSensitive(aCaseSensitive)
     307                 : {
     308               0 :   MOZ_COUNT_CTOR(nsAttrSelector);
     309               0 : }
     310                 : 
     311                 : nsAttrSelector*
     312               0 : nsAttrSelector::Clone(bool aDeep) const
     313                 : {
     314                 :   nsAttrSelector *result =
     315                 :     new nsAttrSelector(mNameSpace, mLowercaseAttr, mCasedAttr, 
     316               0 :                        mFunction, mValue, mCaseSensitive);
     317                 : 
     318               0 :   if (aDeep)
     319               0 :     NS_CSS_CLONE_LIST_MEMBER(nsAttrSelector, this, mNext, result, (false));
     320                 : 
     321               0 :   return result;
     322                 : }
     323                 : 
     324               0 : nsAttrSelector::~nsAttrSelector(void)
     325                 : {
     326               0 :   MOZ_COUNT_DTOR(nsAttrSelector);
     327                 : 
     328               0 :   NS_CSS_DELETE_LIST_MEMBER(nsAttrSelector, this, mNext);
     329               0 : }
     330                 : 
     331                 : // -- nsCSSSelector -------------------------------
     332                 : 
     333             220 : nsCSSSelector::nsCSSSelector(void)
     334                 :   : mLowercaseTag(nsnull),
     335                 :     mCasedTag(nsnull),
     336                 :     mIDList(nsnull),
     337                 :     mClassList(nsnull),
     338                 :     mPseudoClassList(nsnull),
     339                 :     mAttrList(nsnull),
     340                 :     mNegations(nsnull),
     341                 :     mNext(nsnull),
     342                 :     mNameSpace(kNameSpaceID_Unknown),
     343                 :     mOperator(0),
     344             220 :     mPseudoType(nsCSSPseudoElements::ePseudo_NotPseudoElement)
     345                 : {
     346             220 :   MOZ_COUNT_CTOR(nsCSSSelector);
     347                 :   MOZ_STATIC_ASSERT(nsCSSPseudoElements::ePseudo_MAX < PR_INT16_MAX,
     348                 :                     "nsCSSPseudoElements::Type values overflow mPseudoType");
     349             220 : }
     350                 : 
     351                 : nsCSSSelector*
     352               0 : nsCSSSelector::Clone(bool aDeepNext, bool aDeepNegations) const
     353                 : {
     354               0 :   nsCSSSelector *result = new nsCSSSelector();
     355               0 :   if (!result)
     356               0 :     return nsnull;
     357                 : 
     358               0 :   result->mNameSpace = mNameSpace;
     359               0 :   result->mLowercaseTag = mLowercaseTag;
     360               0 :   result->mCasedTag = mCasedTag;
     361               0 :   result->mOperator = mOperator;
     362               0 :   result->mPseudoType = mPseudoType;
     363                 :   
     364               0 :   NS_IF_CLONE(mIDList);
     365               0 :   NS_IF_CLONE(mClassList);
     366               0 :   NS_IF_CLONE(mPseudoClassList);
     367               0 :   NS_IF_CLONE(mAttrList);
     368                 : 
     369                 :   // No need to worry about multiple levels of recursion since an
     370                 :   // mNegations can't have an mNext.
     371               0 :   NS_ASSERTION(!mNegations || !mNegations->mNext,
     372                 :                "mNegations can't have non-null mNext");
     373               0 :   if (aDeepNegations) {
     374               0 :     NS_CSS_CLONE_LIST_MEMBER(nsCSSSelector, this, mNegations, result,
     375                 :                              (true, false));
     376                 :   }
     377                 : 
     378               0 :   if (aDeepNext) {
     379               0 :     NS_CSS_CLONE_LIST_MEMBER(nsCSSSelector, this, mNext, result,
     380                 :                              (false, true));
     381                 :   }
     382                 : 
     383               0 :   return result;
     384                 : }
     385                 : 
     386             440 : nsCSSSelector::~nsCSSSelector(void)  
     387                 : {
     388             220 :   MOZ_COUNT_DTOR(nsCSSSelector);
     389             220 :   Reset();
     390                 :   // No need to worry about multiple levels of recursion since an
     391                 :   // mNegations can't have an mNext.
     392             330 :   NS_CSS_DELETE_LIST_MEMBER(nsCSSSelector, this, mNext);
     393             220 : }
     394                 : 
     395             220 : void nsCSSSelector::Reset(void)
     396                 : {
     397             220 :   mNameSpace = kNameSpaceID_Unknown;
     398             220 :   mLowercaseTag = nsnull;
     399             220 :   mCasedTag = nsnull;
     400             440 :   NS_IF_DELETE(mIDList);
     401             440 :   NS_IF_DELETE(mClassList);
     402             440 :   NS_IF_DELETE(mPseudoClassList);
     403             440 :   NS_IF_DELETE(mAttrList);
     404                 :   // No need to worry about multiple levels of recursion since an
     405                 :   // mNegations can't have an mNext.
     406             220 :   NS_ASSERTION(!mNegations || !mNegations->mNext,
     407                 :                "mNegations can't have non-null mNext");
     408             220 :   NS_CSS_DELETE_LIST_MEMBER(nsCSSSelector, this, mNegations);
     409             220 :   mOperator = PRUnichar(0);
     410             220 : }
     411                 : 
     412             220 : void nsCSSSelector::SetNameSpace(PRInt32 aNameSpace)
     413                 : {
     414             220 :   mNameSpace = aNameSpace;
     415             220 : }
     416                 : 
     417             220 : void nsCSSSelector::SetTag(const nsString& aTag)
     418                 : {
     419             220 :   if (aTag.IsEmpty()) {
     420               0 :     mLowercaseTag = mCasedTag =  nsnull;
     421               0 :     return;
     422                 :   }
     423                 : 
     424             220 :   mCasedTag = do_GetAtom(aTag);
     425                 :  
     426             440 :   nsAutoString lowercase;
     427             220 :   nsContentUtils::ASCIIToLower(aTag, lowercase);
     428             220 :   mLowercaseTag = do_GetAtom(lowercase);
     429                 : }
     430                 : 
     431               0 : void nsCSSSelector::AddID(const nsString& aID)
     432                 : {
     433               0 :   if (!aID.IsEmpty()) {
     434               0 :     nsAtomList** list = &mIDList;
     435               0 :     while (nsnull != *list) {
     436               0 :       list = &((*list)->mNext);
     437                 :     }
     438               0 :     *list = new nsAtomList(aID);
     439                 :   }
     440               0 : }
     441                 : 
     442               0 : void nsCSSSelector::AddClass(const nsString& aClass)
     443                 : {
     444               0 :   if (!aClass.IsEmpty()) {
     445               0 :     nsAtomList** list = &mClassList;
     446               0 :     while (nsnull != *list) {
     447               0 :       list = &((*list)->mNext);
     448                 :     }
     449               0 :     *list = new nsAtomList(aClass);
     450                 :   }
     451               0 : }
     452                 : 
     453               0 : void nsCSSSelector::AddPseudoClass(nsCSSPseudoClasses::Type aType)
     454                 : {
     455               0 :   AddPseudoClassInternal(new nsPseudoClassList(aType));
     456               0 : }
     457                 : 
     458               0 : void nsCSSSelector::AddPseudoClass(nsCSSPseudoClasses::Type aType,
     459                 :                                    const PRUnichar* aString)
     460                 : {
     461               0 :   AddPseudoClassInternal(new nsPseudoClassList(aType, aString));
     462               0 : }
     463                 : 
     464               0 : void nsCSSSelector::AddPseudoClass(nsCSSPseudoClasses::Type aType,
     465                 :                                    const PRInt32* aIntPair)
     466                 : {
     467               0 :   AddPseudoClassInternal(new nsPseudoClassList(aType, aIntPair));
     468               0 : }
     469                 : 
     470               0 : void nsCSSSelector::AddPseudoClass(nsCSSPseudoClasses::Type aType,
     471                 :                                    nsCSSSelectorList* aSelectorList)
     472                 : {
     473                 :   // Take ownership of nsCSSSelectorList instead of copying.
     474               0 :   AddPseudoClassInternal(new nsPseudoClassList(aType, aSelectorList));
     475               0 : }
     476                 : 
     477               0 : void nsCSSSelector::AddPseudoClassInternal(nsPseudoClassList *aPseudoClass)
     478                 : {
     479               0 :   nsPseudoClassList** list = &mPseudoClassList;
     480               0 :   while (nsnull != *list) {
     481               0 :     list = &((*list)->mNext);
     482                 :   }
     483               0 :   *list = aPseudoClass;
     484               0 : }
     485                 : 
     486               0 : void nsCSSSelector::AddAttribute(PRInt32 aNameSpace, const nsString& aAttr)
     487                 : {
     488               0 :   if (!aAttr.IsEmpty()) {
     489               0 :     nsAttrSelector** list = &mAttrList;
     490               0 :     while (nsnull != *list) {
     491               0 :       list = &((*list)->mNext);
     492                 :     }
     493               0 :     *list = new nsAttrSelector(aNameSpace, aAttr);
     494                 :   }
     495               0 : }
     496                 : 
     497               0 : void nsCSSSelector::AddAttribute(PRInt32 aNameSpace, const nsString& aAttr, PRUint8 aFunc, 
     498                 :                                  const nsString& aValue, bool aCaseSensitive)
     499                 : {
     500               0 :   if (!aAttr.IsEmpty()) {
     501               0 :     nsAttrSelector** list = &mAttrList;
     502               0 :     while (nsnull != *list) {
     503               0 :       list = &((*list)->mNext);
     504                 :     }
     505               0 :     *list = new nsAttrSelector(aNameSpace, aAttr, aFunc, aValue, aCaseSensitive);
     506                 :   }
     507               0 : }
     508                 : 
     509             110 : void nsCSSSelector::SetOperator(PRUnichar aOperator)
     510                 : {
     511             110 :   mOperator = aOperator;
     512             110 : }
     513                 : 
     514             220 : PRInt32 nsCSSSelector::CalcWeightWithoutNegations() const
     515                 : {
     516             220 :   PRInt32 weight = 0;
     517                 : 
     518             220 :   if (nsnull != mLowercaseTag) {
     519             220 :     weight += 0x000001;
     520                 :   }
     521             220 :   nsAtomList* list = mIDList;
     522             440 :   while (nsnull != list) {
     523               0 :     weight += 0x010000;
     524               0 :     list = list->mNext;
     525                 :   }
     526             220 :   list = mClassList;
     527             440 :   while (nsnull != list) {
     528               0 :     weight += 0x000100;
     529               0 :     list = list->mNext;
     530                 :   }
     531                 :   // FIXME (bug 561154):  This is incorrect for :-moz-any(), which isn't
     532                 :   // really a pseudo-class.  In order to handle :-moz-any() correctly,
     533                 :   // we need to compute specificity after we match, based on which
     534                 :   // option we matched with (and thus also need to try the
     535                 :   // highest-specificity options first).
     536             220 :   nsPseudoClassList *plist = mPseudoClassList;
     537             440 :   while (nsnull != plist) {
     538               0 :     weight += 0x000100;
     539               0 :     plist = plist->mNext;
     540                 :   }
     541             220 :   nsAttrSelector* attr = mAttrList;
     542             440 :   while (nsnull != attr) {
     543               0 :     weight += 0x000100;
     544               0 :     attr = attr->mNext;
     545                 :   }
     546             220 :   return weight;
     547                 : }
     548                 : 
     549             220 : PRInt32 nsCSSSelector::CalcWeight() const
     550                 : {
     551                 :   // Loop over this selector and all its negations.
     552             220 :   PRInt32 weight = 0;
     553             440 :   for (const nsCSSSelector *n = this; n; n = n->mNegations) {
     554             220 :     weight += n->CalcWeightWithoutNegations();
     555                 :   }
     556             220 :   return weight;
     557                 : }
     558                 : 
     559                 : //
     560                 : // Builds the textual representation of a selector. Called by DOM 2 CSS 
     561                 : // StyleRule:selectorText
     562                 : //
     563                 : void
     564               0 : nsCSSSelector::ToString(nsAString& aString, nsCSSStyleSheet* aSheet,
     565                 :                         bool aAppend) const
     566                 : {
     567               0 :   if (!aAppend)
     568               0 :    aString.Truncate();
     569                 : 
     570                 :   // selectors are linked from right-to-left, so the next selector in
     571                 :   // the linked list actually precedes this one in the resulting string
     572               0 :   nsAutoTArray<const nsCSSSelector*, 8> stack;
     573               0 :   for (const nsCSSSelector *s = this; s; s = s->mNext) {
     574               0 :     stack.AppendElement(s);
     575                 :   }
     576                 : 
     577               0 :   while (!stack.IsEmpty()) {
     578               0 :     PRUint32 index = stack.Length() - 1;
     579               0 :     const nsCSSSelector *s = stack.ElementAt(index);
     580               0 :     stack.RemoveElementAt(index);
     581                 : 
     582               0 :     s->AppendToStringWithoutCombinators(aString, aSheet);
     583                 : 
     584                 :     // Append the combinator, if needed.
     585               0 :     if (!stack.IsEmpty()) {
     586               0 :       const nsCSSSelector *next = stack.ElementAt(index - 1);
     587               0 :       PRUnichar oper = s->mOperator;
     588               0 :       if (next->IsPseudoElement()) {
     589               0 :         NS_ASSERTION(oper == PRUnichar('>'),
     590                 :                      "improperly chained pseudo element");
     591                 :       } else {
     592               0 :         NS_ASSERTION(oper != PRUnichar(0),
     593                 :                      "compound selector without combinator");
     594                 : 
     595               0 :         aString.Append(PRUnichar(' '));
     596               0 :         if (oper != PRUnichar(' ')) {
     597               0 :           aString.Append(oper);
     598               0 :           aString.Append(PRUnichar(' '));
     599                 :         }
     600                 :       }
     601                 :     }
     602                 :   }
     603               0 : }
     604                 : 
     605                 : void
     606               0 : nsCSSSelector::AppendToStringWithoutCombinators
     607                 :                    (nsAString& aString, nsCSSStyleSheet* aSheet) const
     608                 : {
     609               0 :   AppendToStringWithoutCombinatorsOrNegations(aString, aSheet, false);
     610                 : 
     611               0 :   for (const nsCSSSelector* negation = mNegations; negation;
     612                 :        negation = negation->mNegations) {
     613               0 :     aString.AppendLiteral(":not(");
     614                 :     negation->AppendToStringWithoutCombinatorsOrNegations(aString, aSheet,
     615               0 :                                                           true);
     616               0 :     aString.Append(PRUnichar(')'));
     617                 :   }
     618               0 : }
     619                 : 
     620                 : void
     621               0 : nsCSSSelector::AppendToStringWithoutCombinatorsOrNegations
     622                 :                    (nsAString& aString, nsCSSStyleSheet* aSheet,
     623                 :                    bool aIsNegated) const
     624                 : {
     625               0 :   nsAutoString temp;
     626               0 :   bool isPseudoElement = IsPseudoElement();
     627                 : 
     628                 :   // For non-pseudo-element selectors or for lone pseudo-elements, deal with
     629                 :   // namespace prefixes.
     630               0 :   bool wroteNamespace = false;
     631               0 :   if (!isPseudoElement || !mNext) {
     632                 :     // append the namespace prefix if needed
     633               0 :     nsXMLNameSpaceMap *sheetNS = aSheet ? aSheet->GetNameSpaceMap() : nsnull;
     634                 : 
     635                 :     // sheetNS is non-null if and only if we had an @namespace rule.  If it's
     636                 :     // null, that means that the only namespaces we could have are the
     637                 :     // wildcard namespace (which can be implicit in this case) and the "none"
     638                 :     // namespace, which then needs to be explicitly specified.
     639               0 :     if (!sheetNS) {
     640               0 :       NS_ASSERTION(mNameSpace == kNameSpaceID_Unknown ||
     641                 :                    mNameSpace == kNameSpaceID_None,
     642                 :                    "How did we get this namespace?");
     643               0 :       if (mNameSpace == kNameSpaceID_None) {
     644               0 :         aString.Append(PRUnichar('|'));
     645               0 :         wroteNamespace = true;
     646                 :       }
     647               0 :     } else if (sheetNS->FindNameSpaceID(nsnull) == mNameSpace) {
     648                 :       // We have the default namespace (possibly including the wildcard
     649                 :       // namespace).  Do nothing.
     650               0 :       NS_ASSERTION(mNameSpace == kNameSpaceID_Unknown ||
     651                 :                    CanBeNamespaced(aIsNegated),
     652                 :                    "How did we end up with this namespace?");
     653               0 :     } else if (mNameSpace == kNameSpaceID_None) {
     654               0 :       NS_ASSERTION(CanBeNamespaced(aIsNegated),
     655                 :                    "How did we end up with this namespace?");
     656               0 :       aString.Append(PRUnichar('|'));
     657               0 :       wroteNamespace = true;
     658               0 :     } else if (mNameSpace != kNameSpaceID_Unknown) {
     659               0 :       NS_ASSERTION(CanBeNamespaced(aIsNegated),
     660                 :                    "How did we end up with this namespace?");
     661               0 :       nsIAtom *prefixAtom = sheetNS->FindPrefix(mNameSpace);
     662               0 :       NS_ASSERTION(prefixAtom, "how'd we get a non-default namespace "
     663                 :                    "without a prefix?");
     664               0 :       nsStyleUtil::AppendEscapedCSSIdent(nsDependentAtomString(prefixAtom),
     665               0 :                                          aString);
     666               0 :       aString.Append(PRUnichar('|'));
     667               0 :       wroteNamespace = true;
     668                 :     } else {
     669                 :       // A selector for an element in any namespace, while the default
     670                 :       // namespace is something else.  :not() is special in that the default
     671                 :       // namespace is not implied for non-type selectors, so if this is a
     672                 :       // negated non-type selector we don't need to output an explicit wildcard
     673                 :       // namespace here, since those default to a wildcard namespace.
     674               0 :       if (CanBeNamespaced(aIsNegated)) {
     675               0 :         aString.AppendLiteral("*|");
     676               0 :         wroteNamespace = true;
     677                 :       }
     678                 :     }
     679                 :   }
     680                 :       
     681               0 :   if (!mLowercaseTag) {
     682                 :     // Universal selector:  avoid writing the universal selector when we
     683                 :     // can avoid it, especially since we're required to avoid it for the
     684                 :     // inside of :not()
     685               0 :     if (wroteNamespace ||
     686               0 :         (!mIDList && !mClassList && !mPseudoClassList && !mAttrList &&
     687               0 :          (aIsNegated || !mNegations))) {
     688               0 :       aString.Append(PRUnichar('*'));
     689                 :     }
     690                 :   } else {
     691                 :     // Append the tag name
     692               0 :     nsAutoString tag;
     693               0 :     (isPseudoElement ? mLowercaseTag : mCasedTag)->ToString(tag);
     694               0 :     if (isPseudoElement) {
     695               0 :       if (!mNext) {
     696                 :         // Lone pseudo-element selector -- toss in a wildcard type selector
     697                 :         // XXXldb Why?
     698               0 :         aString.Append(PRUnichar('*'));
     699                 :       }
     700               0 :       if (!nsCSSPseudoElements::IsCSS2PseudoElement(mLowercaseTag)) {
     701               0 :         aString.Append(PRUnichar(':'));
     702                 :       }
     703                 :       // This should not be escaped since (a) the pseudo-element string
     704                 :       // has a ":" that can't be escaped and (b) all pseudo-elements at
     705                 :       // this point are known, and therefore we know they don't need
     706                 :       // escaping.
     707               0 :       aString.Append(tag);
     708                 :     } else {
     709               0 :       nsStyleUtil::AppendEscapedCSSIdent(tag, aString);
     710                 :     }
     711                 :   }
     712                 : 
     713                 :   // Append the id, if there is one
     714               0 :   if (mIDList) {
     715               0 :     nsAtomList* list = mIDList;
     716               0 :     while (list != nsnull) {
     717               0 :       list->mAtom->ToString(temp);
     718               0 :       aString.Append(PRUnichar('#'));
     719               0 :       nsStyleUtil::AppendEscapedCSSIdent(temp, aString);
     720               0 :       list = list->mNext;
     721                 :     }
     722                 :   }
     723                 : 
     724                 :   // Append each class in the linked list
     725               0 :   if (mClassList) {
     726               0 :     if (isPseudoElement) {
     727                 : #ifdef MOZ_XUL
     728               0 :       NS_ABORT_IF_FALSE(nsCSSAnonBoxes::IsTreePseudoElement(mLowercaseTag),
     729                 :                         "must be tree pseudo-element");
     730                 : 
     731               0 :       aString.Append(PRUnichar('('));
     732               0 :       for (nsAtomList* list = mClassList; list; list = list->mNext) {
     733               0 :         nsStyleUtil::AppendEscapedCSSIdent(nsDependentAtomString(list->mAtom), aString);
     734               0 :         aString.Append(PRUnichar(','));
     735                 :       }
     736                 :       // replace the final comma with a close-paren
     737               0 :       aString.Replace(aString.Length() - 1, 1, PRUnichar(')'));
     738                 : #else
     739                 :       NS_ERROR("Can't happen");
     740                 : #endif
     741                 :     } else {
     742               0 :       nsAtomList* list = mClassList;
     743               0 :       while (list != nsnull) {
     744               0 :         list->mAtom->ToString(temp);
     745               0 :         aString.Append(PRUnichar('.'));
     746               0 :         nsStyleUtil::AppendEscapedCSSIdent(temp, aString);
     747               0 :         list = list->mNext;
     748                 :       }
     749                 :     }
     750                 :   }
     751                 : 
     752                 :   // Append each attribute selector in the linked list
     753               0 :   if (mAttrList) {
     754               0 :     nsAttrSelector* list = mAttrList;
     755               0 :     while (list != nsnull) {
     756               0 :       aString.Append(PRUnichar('['));
     757                 :       // Append the namespace prefix
     758               0 :       if (list->mNameSpace == kNameSpaceID_Unknown) {
     759               0 :         aString.Append(PRUnichar('*'));
     760               0 :         aString.Append(PRUnichar('|'));
     761               0 :       } else if (list->mNameSpace != kNameSpaceID_None) {
     762               0 :         if (aSheet) {
     763               0 :           nsXMLNameSpaceMap *sheetNS = aSheet->GetNameSpaceMap();
     764               0 :           nsIAtom *prefixAtom = sheetNS->FindPrefix(list->mNameSpace);
     765                 :           // Default namespaces don't apply to attribute selectors, so
     766                 :           // we must have a useful prefix.
     767               0 :           NS_ASSERTION(prefixAtom,
     768                 :                        "How did we end up with a namespace if the prefix "
     769                 :                        "is unknown?");
     770               0 :           nsAutoString prefix;
     771               0 :           prefixAtom->ToString(prefix);
     772               0 :           nsStyleUtil::AppendEscapedCSSIdent(prefix, aString);
     773               0 :           aString.Append(PRUnichar('|'));
     774                 :         }
     775                 :       }
     776                 :       // Append the attribute name
     777               0 :       list->mCasedAttr->ToString(temp);
     778               0 :       nsStyleUtil::AppendEscapedCSSIdent(temp, aString);
     779                 : 
     780               0 :       if (list->mFunction != NS_ATTR_FUNC_SET) {
     781                 :         // Append the function
     782               0 :         if (list->mFunction == NS_ATTR_FUNC_INCLUDES)
     783               0 :           aString.Append(PRUnichar('~'));
     784               0 :         else if (list->mFunction == NS_ATTR_FUNC_DASHMATCH)
     785               0 :           aString.Append(PRUnichar('|'));
     786               0 :         else if (list->mFunction == NS_ATTR_FUNC_BEGINSMATCH)
     787               0 :           aString.Append(PRUnichar('^'));
     788               0 :         else if (list->mFunction == NS_ATTR_FUNC_ENDSMATCH)
     789               0 :           aString.Append(PRUnichar('$'));
     790               0 :         else if (list->mFunction == NS_ATTR_FUNC_CONTAINSMATCH)
     791               0 :           aString.Append(PRUnichar('*'));
     792                 : 
     793               0 :         aString.Append(PRUnichar('='));
     794                 :       
     795                 :         // Append the value
     796               0 :         nsStyleUtil::AppendEscapedCSSString(list->mValue, aString);
     797                 :       }
     798                 : 
     799               0 :       aString.Append(PRUnichar(']'));
     800                 :       
     801               0 :       list = list->mNext;
     802                 :     }
     803                 :   }
     804                 : 
     805                 :   // Append each pseudo-class in the linked list
     806               0 :   for (nsPseudoClassList* list = mPseudoClassList; list; list = list->mNext) {
     807               0 :     nsCSSPseudoClasses::PseudoTypeToString(list->mType, temp);
     808                 :     // This should not be escaped since (a) the pseudo-class string
     809                 :     // has a ":" that can't be escaped and (b) all pseudo-classes at
     810                 :     // this point are known, and therefore we know they don't need
     811                 :     // escaping.
     812               0 :     aString.Append(temp);
     813               0 :     if (list->u.mMemory) {
     814               0 :       aString.Append(PRUnichar('('));
     815               0 :       if (nsCSSPseudoClasses::HasStringArg(list->mType)) {
     816                 :         nsStyleUtil::AppendEscapedCSSIdent(
     817               0 :           nsDependentString(list->u.mString), aString);
     818               0 :       } else if (nsCSSPseudoClasses::HasNthPairArg(list->mType)) {
     819               0 :         PRInt32 a = list->u.mNumbers[0],
     820               0 :                 b = list->u.mNumbers[1];
     821               0 :         temp.Truncate();
     822               0 :         if (a != 0) {
     823               0 :           if (a == -1) {
     824               0 :             temp.Append(PRUnichar('-'));
     825               0 :           } else if (a != 1) {
     826               0 :             temp.AppendInt(a);
     827                 :           }
     828               0 :           temp.Append(PRUnichar('n'));
     829                 :         }
     830               0 :         if (b != 0 || a == 0) {
     831               0 :           if (b >= 0 && a != 0) // check a != 0 for whether we printed above
     832               0 :             temp.Append(PRUnichar('+'));
     833               0 :           temp.AppendInt(b);
     834                 :         }
     835               0 :         aString.Append(temp);
     836                 :       } else {
     837               0 :         NS_ASSERTION(nsCSSPseudoClasses::HasSelectorListArg(list->mType),
     838                 :                      "unexpected pseudo-class");
     839               0 :         nsString tmp;
     840               0 :         list->u.mSelectors->ToString(tmp, aSheet);
     841               0 :         aString.Append(tmp);
     842                 :       }
     843               0 :       aString.Append(PRUnichar(')'));
     844                 :     }
     845                 :   }
     846               0 : }
     847                 : 
     848                 : bool
     849               0 : nsCSSSelector::CanBeNamespaced(bool aIsNegated) const
     850                 : {
     851               0 :   return !aIsNegated ||
     852               0 :          (!mIDList && !mClassList && !mPseudoClassList && !mAttrList);
     853                 : }
     854                 : 
     855                 : size_t
     856               0 : nsCSSSelector::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
     857                 : {
     858               0 :   size_t n = 0;
     859               0 :   const nsCSSSelector* s = this;
     860               0 :   while (s) {
     861               0 :     n += aMallocSizeOf(s);
     862                 : 
     863                 :     #define MEASURE(x)   n += x ? x->SizeOfIncludingThis(aMallocSizeOf) : 0;
     864                 : 
     865               0 :     MEASURE(s->mIDList);
     866               0 :     MEASURE(s->mClassList);
     867               0 :     MEASURE(s->mPseudoClassList);
     868               0 :     MEASURE(s->mNegations);
     869                 : 
     870                 :     // Measurement of the following members may be added later if DMD finds it is
     871                 :     // worthwhile:
     872                 :     // - s->mAttrList
     873                 :     //
     874                 :     // The following members aren't measured:
     875                 :     // - s->mLowercaseTag, because it's an atom and therefore shared
     876                 :     // - s->mCasedTag, because it's an atom and therefore shared
     877                 : 
     878               0 :     s = s->mNext;
     879                 :   }
     880               0 :   return n;
     881                 : }
     882                 : 
     883                 : // -- nsCSSSelectorList -------------------------------
     884                 : 
     885             110 : nsCSSSelectorList::nsCSSSelectorList(void)
     886                 :   : mSelectors(nsnull),
     887                 :     mWeight(0),
     888             110 :     mNext(nsnull)
     889                 : {
     890             110 :   MOZ_COUNT_CTOR(nsCSSSelectorList);
     891             110 : }
     892                 : 
     893             110 : nsCSSSelectorList::~nsCSSSelectorList()
     894                 : {
     895             110 :   MOZ_COUNT_DTOR(nsCSSSelectorList);
     896             110 :   delete mSelectors;
     897             110 :   NS_CSS_DELETE_LIST_MEMBER(nsCSSSelectorList, this, mNext);
     898             110 : }
     899                 : 
     900                 : nsCSSSelector*
     901             220 : nsCSSSelectorList::AddSelector(PRUnichar aOperator)
     902                 : {
     903             220 :   nsCSSSelector* newSel = new nsCSSSelector();
     904                 : 
     905             220 :   if (mSelectors) {
     906             110 :     NS_ASSERTION(aOperator != PRUnichar(0), "chaining without combinator");
     907             110 :     mSelectors->SetOperator(aOperator);
     908                 :   } else {
     909             110 :     NS_ASSERTION(aOperator == PRUnichar(0), "combinator without chaining");
     910                 :   }
     911                 : 
     912             220 :   newSel->mNext = mSelectors;
     913             220 :   mSelectors = newSel;
     914             220 :   return newSel;
     915                 : }
     916                 : 
     917                 : void
     918               0 : nsCSSSelectorList::ToString(nsAString& aResult, nsCSSStyleSheet* aSheet)
     919                 : {
     920               0 :   aResult.Truncate();
     921               0 :   nsCSSSelectorList *p = this;
     922               0 :   for (;;) {
     923               0 :     p->mSelectors->ToString(aResult, aSheet, true);
     924               0 :     p = p->mNext;
     925               0 :     if (!p)
     926                 :       break;
     927               0 :     aResult.AppendLiteral(", ");
     928                 :   }
     929               0 : }
     930                 : 
     931                 : nsCSSSelectorList*
     932               0 : nsCSSSelectorList::Clone(bool aDeep) const
     933                 : {
     934               0 :   nsCSSSelectorList *result = new nsCSSSelectorList();
     935               0 :   result->mWeight = mWeight;
     936               0 :   NS_IF_CLONE(mSelectors);
     937                 : 
     938               0 :   if (aDeep) {
     939               0 :     NS_CSS_CLONE_LIST_MEMBER(nsCSSSelectorList, this, mNext, result,
     940                 :                              (false));
     941                 :   }
     942               0 :   return result;
     943                 : }
     944                 : 
     945                 : size_t
     946               0 : nsCSSSelectorList::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
     947                 : {
     948               0 :   size_t n = 0;
     949               0 :   const nsCSSSelectorList* s = this;
     950               0 :   while (s) {
     951               0 :     n += aMallocSizeOf(s);
     952               0 :     n += s->mSelectors ? s->mSelectors->SizeOfIncludingThis(aMallocSizeOf) : 0;
     953               0 :     s = s->mNext;
     954                 :   }
     955               0 :   return n;
     956                 : }
     957                 : 
     958                 : // -- ImportantRule ----------------------------------
     959                 : 
     960                 : namespace mozilla {
     961                 : namespace css {
     962                 : 
     963               0 : ImportantRule::ImportantRule(Declaration* aDeclaration)
     964               0 :   : mDeclaration(aDeclaration)
     965                 : {
     966               0 : }
     967                 : 
     968               0 : ImportantRule::~ImportantRule()
     969                 : {
     970               0 : }
     971                 : 
     972               0 : NS_IMPL_ISUPPORTS1(ImportantRule, nsIStyleRule)
     973                 : 
     974                 : /* virtual */ void
     975               0 : ImportantRule::MapRuleInfoInto(nsRuleData* aRuleData)
     976                 : {
     977               0 :   mDeclaration->MapImportantRuleInfoInto(aRuleData);
     978               0 : }
     979                 : 
     980                 : #ifdef DEBUG
     981                 : /* virtual */ void
     982               0 : ImportantRule::List(FILE* out, PRInt32 aIndent) const
     983                 : {
     984                 :   // Indent
     985               0 :   for (PRInt32 index = aIndent; --index >= 0; ) fputs("  ", out);
     986                 : 
     987                 :   fprintf(out, "! Important declaration=%p\n",
     988               0 :           static_cast<void*>(mDeclaration));
     989               0 : }
     990                 : #endif
     991                 : 
     992                 : } // namespace css
     993                 : } // namespace mozilla
     994                 : 
     995                 : // --------------------------------------------------------
     996                 : 
     997                 : namespace mozilla {
     998                 : namespace css {
     999                 : class DOMCSSStyleRule;
    1000                 : }
    1001                 : }
    1002                 : 
    1003                 : class DOMCSSDeclarationImpl : public nsDOMCSSDeclaration
    1004                 : {
    1005                 : public:
    1006                 :   DOMCSSDeclarationImpl(css::StyleRule *aRule);
    1007                 :   virtual ~DOMCSSDeclarationImpl(void);
    1008                 : 
    1009                 :   NS_IMETHOD GetParentRule(nsIDOMCSSRule **aParent);
    1010                 :   void DropReference(void);
    1011                 :   virtual css::Declaration* GetCSSDeclaration(bool aAllocate);
    1012                 :   virtual nsresult SetCSSDeclaration(css::Declaration* aDecl);
    1013                 :   virtual void GetCSSParsingEnvironment(CSSParsingEnvironment& aCSSParseEnv);
    1014                 :   virtual nsIDocument* DocToUpdate();
    1015                 : 
    1016                 :   // Override |AddRef| and |Release| for being a member of
    1017                 :   // |DOMCSSStyleRule|.
    1018                 :   NS_IMETHOD_(nsrefcnt) AddRef(void);
    1019                 :   NS_IMETHOD_(nsrefcnt) Release(void);
    1020                 : 
    1021               0 :   virtual nsINode *GetParentObject()
    1022                 :   {
    1023               0 :     return nsnull;
    1024                 :   }
    1025                 : 
    1026                 :   friend class css::DOMCSSStyleRule;
    1027                 : 
    1028                 : protected:
    1029                 :   // This reference is not reference-counted. The rule object tells us
    1030                 :   // when it's about to go away.
    1031                 :   css::StyleRule *mRule;
    1032                 : 
    1033                 :   inline css::DOMCSSStyleRule* DomRule();
    1034                 : 
    1035                 : private:
    1036                 :   // NOT TO BE IMPLEMENTED
    1037                 :   // This object cannot be allocated on its own.  It must be a member of
    1038                 :   // DOMCSSStyleRule.
    1039                 :   void* operator new(size_t size) CPP_THROW_NEW;
    1040                 : };
    1041                 : 
    1042                 : namespace mozilla {
    1043                 : namespace css {
    1044                 : 
    1045                 : class DOMCSSStyleRule : public nsICSSStyleRuleDOMWrapper
    1046                 : {
    1047                 : public:
    1048                 :   DOMCSSStyleRule(StyleRule *aRule);
    1049                 :   virtual ~DOMCSSStyleRule();
    1050                 : 
    1051                 :   NS_DECL_ISUPPORTS
    1052                 :   NS_DECL_NSIDOMCSSRULE
    1053                 :   NS_DECL_NSIDOMCSSSTYLERULE
    1054                 : 
    1055                 :   // nsICSSStyleRuleDOMWrapper
    1056                 :   NS_IMETHOD GetCSSStyleRule(StyleRule **aResult);
    1057                 : 
    1058               0 :   DOMCSSDeclarationImpl* DOMDeclaration() { return &mDOMDeclaration; }
    1059                 : 
    1060                 :   friend class ::DOMCSSDeclarationImpl;
    1061                 : 
    1062                 : protected:
    1063                 :   DOMCSSDeclarationImpl mDOMDeclaration;
    1064                 : 
    1065               0 :   StyleRule* Rule() {
    1066               0 :     return mDOMDeclaration.mRule;
    1067                 :   }
    1068                 : };
    1069                 : 
    1070                 : } // namespace css
    1071                 : } // namespace mozilla
    1072                 : 
    1073               0 : DOMCSSDeclarationImpl::DOMCSSDeclarationImpl(css::StyleRule *aRule)
    1074               0 :   : mRule(aRule)
    1075                 : {
    1076               0 :   MOZ_COUNT_CTOR(DOMCSSDeclarationImpl);
    1077               0 : }
    1078                 : 
    1079               0 : DOMCSSDeclarationImpl::~DOMCSSDeclarationImpl(void)
    1080                 : {
    1081               0 :   NS_ASSERTION(!mRule, "DropReference not called.");
    1082                 : 
    1083               0 :   MOZ_COUNT_DTOR(DOMCSSDeclarationImpl);
    1084               0 : }
    1085                 : 
    1086               0 : inline css::DOMCSSStyleRule* DOMCSSDeclarationImpl::DomRule()
    1087                 : {
    1088                 :   return reinterpret_cast<css::DOMCSSStyleRule*>
    1089                 :                          (reinterpret_cast<char*>(this) -
    1090               0 :            offsetof(css::DOMCSSStyleRule, mDOMDeclaration));
    1091                 : }
    1092                 : 
    1093               0 : NS_IMPL_ADDREF_USING_AGGREGATOR(DOMCSSDeclarationImpl, DomRule())
    1094               0 : NS_IMPL_RELEASE_USING_AGGREGATOR(DOMCSSDeclarationImpl, DomRule())
    1095                 : 
    1096                 : void
    1097               0 : DOMCSSDeclarationImpl::DropReference(void)
    1098                 : {
    1099               0 :   mRule = nsnull;
    1100               0 : }
    1101                 : 
    1102                 : css::Declaration*
    1103               0 : DOMCSSDeclarationImpl::GetCSSDeclaration(bool aAllocate)
    1104                 : {
    1105               0 :   if (mRule) {
    1106               0 :     return mRule->GetDeclaration();
    1107                 :   } else {
    1108               0 :     return nsnull;
    1109                 :   }
    1110                 : }
    1111                 : 
    1112                 : void
    1113               0 : DOMCSSDeclarationImpl::GetCSSParsingEnvironment(CSSParsingEnvironment& aCSSParseEnv)
    1114                 : {
    1115               0 :   GetCSSParsingEnvironmentForRule(mRule, aCSSParseEnv);
    1116               0 : }
    1117                 : 
    1118                 : NS_IMETHODIMP
    1119               0 : DOMCSSDeclarationImpl::GetParentRule(nsIDOMCSSRule **aParent)
    1120                 : {
    1121               0 :   NS_ENSURE_ARG_POINTER(aParent);
    1122                 : 
    1123               0 :   if (!mRule) {
    1124               0 :     *aParent = nsnull;
    1125               0 :     return NS_OK;
    1126                 :   }
    1127                 : 
    1128               0 :   NS_IF_ADDREF(*aParent = mRule->GetDOMRule());
    1129               0 :   return NS_OK;
    1130                 : }
    1131                 : 
    1132                 : nsresult
    1133               0 : DOMCSSDeclarationImpl::SetCSSDeclaration(css::Declaration* aDecl)
    1134                 : {
    1135               0 :   NS_PRECONDITION(mRule,
    1136                 :          "can only be called when |GetCSSDeclaration| returned a declaration");
    1137                 : 
    1138               0 :   nsCOMPtr<nsIDocument> owningDoc;
    1139               0 :   nsCOMPtr<nsIStyleSheet> sheet = mRule->GetStyleSheet();
    1140               0 :   if (sheet) {
    1141               0 :     owningDoc = sheet->GetOwningDocument();
    1142                 :   }
    1143                 : 
    1144               0 :   mozAutoDocUpdate updateBatch(owningDoc, UPDATE_STYLE, true);
    1145                 : 
    1146               0 :   nsRefPtr<css::StyleRule> oldRule = mRule;
    1147               0 :   mRule = oldRule->DeclarationChanged(aDecl, true).get();
    1148               0 :   if (!mRule)
    1149               0 :     return NS_ERROR_OUT_OF_MEMORY;
    1150               0 :   nsrefcnt cnt = mRule->Release();
    1151               0 :   if (cnt == 0) {
    1152               0 :     NS_NOTREACHED("container didn't take ownership");
    1153               0 :     mRule = nsnull;
    1154               0 :     return NS_ERROR_UNEXPECTED;
    1155                 :   }
    1156                 : 
    1157               0 :   if (owningDoc) {
    1158               0 :     owningDoc->StyleRuleChanged(sheet, oldRule, mRule);
    1159                 :   }
    1160               0 :   return NS_OK;
    1161                 : }
    1162                 : 
    1163                 : nsIDocument*
    1164               0 : DOMCSSDeclarationImpl::DocToUpdate()
    1165                 : {
    1166               0 :   return nsnull;
    1167                 : }
    1168                 : 
    1169                 : // needs to be outside the namespace
    1170                 : DOMCI_DATA(CSSStyleRule, css::DOMCSSStyleRule)
    1171                 : 
    1172                 : namespace mozilla {
    1173                 : namespace css {
    1174                 : 
    1175               0 : DOMCSSStyleRule::DOMCSSStyleRule(StyleRule* aRule)
    1176               0 :   : mDOMDeclaration(aRule)
    1177                 : {
    1178               0 : }
    1179                 : 
    1180               0 : DOMCSSStyleRule::~DOMCSSStyleRule()
    1181                 : {
    1182               0 : }
    1183                 : 
    1184               0 : NS_INTERFACE_MAP_BEGIN(DOMCSSStyleRule)
    1185               0 :   NS_INTERFACE_MAP_ENTRY(nsICSSStyleRuleDOMWrapper)
    1186               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMCSSStyleRule)
    1187               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMCSSRule)
    1188               0 :   NS_INTERFACE_MAP_ENTRY(nsISupports)
    1189               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(CSSStyleRule)
    1190               0 : NS_INTERFACE_MAP_END
    1191                 : 
    1192               0 : NS_IMPL_ADDREF(DOMCSSStyleRule)
    1193               0 : NS_IMPL_RELEASE(DOMCSSStyleRule)
    1194                 : 
    1195                 : NS_IMETHODIMP
    1196               0 : DOMCSSStyleRule::GetType(PRUint16* aType)
    1197                 : {
    1198               0 :   *aType = nsIDOMCSSRule::STYLE_RULE;
    1199                 :   
    1200               0 :   return NS_OK;
    1201                 : }
    1202                 : 
    1203                 : NS_IMETHODIMP
    1204               0 : DOMCSSStyleRule::GetCssText(nsAString& aCssText)
    1205                 : {
    1206               0 :   if (!Rule()) {
    1207               0 :     aCssText.Truncate();
    1208                 :   } else {
    1209               0 :     Rule()->GetCssText(aCssText);
    1210                 :   }
    1211               0 :   return NS_OK;
    1212                 : }
    1213                 : 
    1214                 : NS_IMETHODIMP
    1215               0 : DOMCSSStyleRule::SetCssText(const nsAString& aCssText)
    1216                 : {
    1217               0 :   if (Rule()) {
    1218               0 :     Rule()->SetCssText(aCssText);
    1219                 :   }
    1220               0 :   return NS_OK;
    1221                 : }
    1222                 : 
    1223                 : NS_IMETHODIMP
    1224               0 : DOMCSSStyleRule::GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet)
    1225                 : {
    1226               0 :   if (!Rule()) {
    1227               0 :     *aSheet = nsnull;
    1228               0 :     return NS_OK;
    1229                 :   }
    1230               0 :   return Rule()->GetParentStyleSheet(aSheet);
    1231                 : }
    1232                 : 
    1233                 : NS_IMETHODIMP
    1234               0 : DOMCSSStyleRule::GetParentRule(nsIDOMCSSRule** aParentRule)
    1235                 : {
    1236               0 :   if (!Rule()) {
    1237               0 :     *aParentRule = nsnull;
    1238               0 :     return NS_OK;
    1239                 :   }
    1240               0 :   return Rule()->GetParentRule(aParentRule);
    1241                 : }
    1242                 : 
    1243                 : NS_IMETHODIMP
    1244               0 : DOMCSSStyleRule::GetSelectorText(nsAString& aSelectorText)
    1245                 : {
    1246               0 :   if (!Rule()) {
    1247               0 :     aSelectorText.Truncate();
    1248                 :   } else {
    1249               0 :     Rule()->GetSelectorText(aSelectorText);
    1250                 :   }
    1251               0 :   return NS_OK;
    1252                 : }
    1253                 : 
    1254                 : NS_IMETHODIMP
    1255               0 : DOMCSSStyleRule::SetSelectorText(const nsAString& aSelectorText)
    1256                 : {
    1257               0 :   if (Rule()) {
    1258               0 :     Rule()->SetSelectorText(aSelectorText);
    1259                 :   }
    1260               0 :   return NS_OK;
    1261                 : }
    1262                 : 
    1263                 : NS_IMETHODIMP
    1264               0 : DOMCSSStyleRule::GetStyle(nsIDOMCSSStyleDeclaration** aStyle)
    1265                 : {
    1266               0 :   *aStyle = &mDOMDeclaration;
    1267               0 :   NS_ADDREF(*aStyle);
    1268               0 :   return NS_OK;
    1269                 : }
    1270                 : 
    1271                 : NS_IMETHODIMP
    1272               0 : DOMCSSStyleRule::GetCSSStyleRule(StyleRule **aResult)
    1273                 : {
    1274               0 :   *aResult = Rule();
    1275               0 :   NS_IF_ADDREF(*aResult);
    1276               0 :   return NS_OK;
    1277                 : }
    1278                 : 
    1279                 : } // namespace css
    1280                 : } // namespace mozilla
    1281                 : 
    1282                 : // -- StyleRule ------------------------------------
    1283                 : 
    1284                 : namespace mozilla {
    1285                 : namespace css {
    1286                 : 
    1287               0 : StyleRule::StyleRule(nsCSSSelectorList* aSelector,
    1288                 :                      Declaration* aDeclaration)
    1289                 :   : Rule(),
    1290                 :     mSelector(aSelector),
    1291                 :     mDeclaration(aDeclaration),
    1292                 :     mImportantRule(nsnull),
    1293                 :     mDOMRule(nsnull),
    1294                 :     mLineNumber(0),
    1295               0 :     mWasMatched(false)
    1296                 : {
    1297               0 :   NS_PRECONDITION(aDeclaration, "must have a declaration");
    1298               0 : }
    1299                 : 
    1300                 : // for |Clone|
    1301               0 : StyleRule::StyleRule(const StyleRule& aCopy)
    1302                 :   : Rule(aCopy),
    1303               0 :     mSelector(aCopy.mSelector ? aCopy.mSelector->Clone() : nsnull),
    1304               0 :     mDeclaration(new Declaration(*aCopy.mDeclaration)),
    1305                 :     mImportantRule(nsnull),
    1306                 :     mDOMRule(nsnull),
    1307                 :     mLineNumber(aCopy.mLineNumber),
    1308               0 :     mWasMatched(false)
    1309                 : {
    1310                 :   // rest is constructed lazily on existing data
    1311               0 : }
    1312                 : 
    1313                 : // for |SetCSSDeclaration|
    1314               0 : StyleRule::StyleRule(StyleRule& aCopy,
    1315                 :                      Declaration* aDeclaration)
    1316                 :   : Rule(aCopy),
    1317                 :     mSelector(aCopy.mSelector),
    1318                 :     mDeclaration(aDeclaration),
    1319                 :     mImportantRule(nsnull),
    1320                 :     mDOMRule(aCopy.mDOMRule),
    1321                 :     mLineNumber(aCopy.mLineNumber),
    1322               0 :     mWasMatched(false)
    1323                 : {
    1324                 :   // The DOM rule is replacing |aCopy| with |this|, so transfer
    1325                 :   // the reverse pointer as well (and transfer ownership).
    1326               0 :   aCopy.mDOMRule = nsnull;
    1327                 : 
    1328                 :   // Similarly for the selector.
    1329               0 :   aCopy.mSelector = nsnull;
    1330                 : 
    1331                 :   // We are probably replacing the old declaration with |aDeclaration|
    1332                 :   // instead of taking ownership of the old declaration; only null out
    1333                 :   // aCopy.mDeclaration if we are taking ownership.
    1334               0 :   if (mDeclaration == aCopy.mDeclaration) {
    1335                 :     // This should only ever happen if the declaration was modifiable.
    1336               0 :     mDeclaration->AssertMutable();
    1337               0 :     aCopy.mDeclaration = nsnull;
    1338                 :   }
    1339               0 : }
    1340                 : 
    1341               0 : StyleRule::~StyleRule()
    1342                 : {
    1343               0 :   delete mSelector;
    1344               0 :   delete mDeclaration;
    1345               0 :   NS_IF_RELEASE(mImportantRule);
    1346               0 :   if (mDOMRule) {
    1347               0 :     mDOMRule->DOMDeclaration()->DropReference();
    1348               0 :     NS_RELEASE(mDOMRule);
    1349                 :   }
    1350               0 : }
    1351                 : 
    1352                 : // QueryInterface implementation for StyleRule
    1353               0 : NS_INTERFACE_MAP_BEGIN(StyleRule)
    1354               0 :   if (aIID.Equals(NS_GET_IID(mozilla::css::StyleRule))) {
    1355               0 :     *aInstancePtr = this;
    1356               0 :     NS_ADDREF_THIS();
    1357               0 :     return NS_OK;
    1358                 :   }
    1359                 :   else
    1360               0 :   NS_INTERFACE_MAP_ENTRY(nsIStyleRule)
    1361               0 :   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIStyleRule)
    1362               0 : NS_INTERFACE_MAP_END
    1363                 : 
    1364               0 : NS_IMPL_ADDREF_INHERITED(StyleRule, Rule)
    1365               0 : NS_IMPL_RELEASE_INHERITED(StyleRule, Rule)
    1366                 : 
    1367                 : void
    1368               0 : StyleRule::RuleMatched()
    1369                 : {
    1370               0 :   if (!mWasMatched) {
    1371               0 :     NS_ABORT_IF_FALSE(!mImportantRule, "should not have important rule yet");
    1372                 : 
    1373               0 :     mWasMatched = true;
    1374               0 :     mDeclaration->SetImmutable();
    1375               0 :     if (mDeclaration->HasImportantData()) {
    1376               0 :       NS_ADDREF(mImportantRule = new ImportantRule(mDeclaration));
    1377                 :     }
    1378                 :   }
    1379               0 : }
    1380                 : 
    1381                 : /* virtual */ PRInt32
    1382               0 : StyleRule::GetType() const
    1383                 : {
    1384               0 :   return Rule::STYLE_RULE;
    1385                 : }
    1386                 : 
    1387                 : /* virtual */ already_AddRefed<Rule>
    1388               0 : StyleRule::Clone() const
    1389                 : {
    1390               0 :   nsRefPtr<Rule> clone = new StyleRule(*this);
    1391               0 :   return clone.forget();
    1392                 : }
    1393                 : 
    1394                 : /* virtual */ nsIDOMCSSRule*
    1395               0 : StyleRule::GetDOMRule()
    1396                 : {
    1397               0 :   if (!mSheet) {
    1398                 :     // inline style rules aren't supposed to have a DOM rule object, only
    1399                 :     // a declaration.
    1400               0 :     return nsnull;
    1401                 :   }
    1402               0 :   if (!mDOMRule) {
    1403               0 :     mDOMRule = new DOMCSSStyleRule(this);
    1404               0 :     NS_ADDREF(mDOMRule);
    1405                 :   }
    1406               0 :   return mDOMRule;
    1407                 : }
    1408                 : 
    1409                 : /* virtual */ already_AddRefed<StyleRule>
    1410               0 : StyleRule::DeclarationChanged(Declaration* aDecl,
    1411                 :                               bool aHandleContainer)
    1412                 : {
    1413               0 :   StyleRule* clone = new StyleRule(*this, aDecl);
    1414               0 :   if (!clone) {
    1415               0 :     return nsnull;
    1416                 :   }
    1417                 : 
    1418               0 :   NS_ADDREF(clone); // for return
    1419                 : 
    1420               0 :   if (aHandleContainer) {
    1421               0 :     if (mParentRule) {
    1422               0 :       if (mSheet) {
    1423               0 :         mSheet->ReplaceRuleInGroup(mParentRule, this, clone);
    1424                 :       } else {
    1425               0 :         mParentRule->ReplaceStyleRule(this, clone);
    1426                 :       }
    1427               0 :     } else if (mSheet) {
    1428               0 :       mSheet->ReplaceStyleRule(this, clone);
    1429                 :     }
    1430                 :   }
    1431                 : 
    1432               0 :   return clone;
    1433                 : }
    1434                 : 
    1435                 : /* virtual */ void
    1436               0 : StyleRule::MapRuleInfoInto(nsRuleData* aRuleData)
    1437                 : {
    1438               0 :   NS_ABORT_IF_FALSE(mWasMatched,
    1439                 :                     "somebody forgot to call css::StyleRule::RuleMatched");
    1440               0 :   mDeclaration->MapNormalRuleInfoInto(aRuleData);
    1441               0 : }
    1442                 : 
    1443                 : #ifdef DEBUG
    1444                 : /* virtual */ void
    1445               0 : StyleRule::List(FILE* out, PRInt32 aIndent) const
    1446                 : {
    1447                 :   // Indent
    1448               0 :   for (PRInt32 index = aIndent; --index >= 0; ) fputs("  ", out);
    1449                 : 
    1450               0 :   nsAutoString buffer;
    1451               0 :   if (mSelector)
    1452               0 :     mSelector->ToString(buffer, mSheet);
    1453                 : 
    1454               0 :   buffer.AppendLiteral(" ");
    1455               0 :   fputs(NS_LossyConvertUTF16toASCII(buffer).get(), out);
    1456               0 :   if (nsnull != mDeclaration) {
    1457               0 :     mDeclaration->List(out);
    1458                 :   }
    1459                 :   else {
    1460               0 :     fputs("{ null declaration }", out);
    1461                 :   }
    1462               0 :   fputs("\n", out);
    1463               0 : }
    1464                 : #endif
    1465                 : 
    1466                 : void
    1467               0 : StyleRule::GetCssText(nsAString& aCssText)
    1468                 : {
    1469               0 :   if (mSelector) {
    1470               0 :     mSelector->ToString(aCssText, mSheet);
    1471               0 :     aCssText.Append(PRUnichar(' '));
    1472                 :   }
    1473               0 :   aCssText.Append(PRUnichar('{'));
    1474               0 :   aCssText.Append(PRUnichar(' '));
    1475               0 :   if (mDeclaration)
    1476                 :   {
    1477               0 :     nsAutoString   tempString;
    1478               0 :     mDeclaration->ToString( tempString );
    1479               0 :     aCssText.Append( tempString );
    1480                 :   }
    1481               0 :   aCssText.Append(PRUnichar(' '));
    1482               0 :   aCssText.Append(PRUnichar('}'));
    1483               0 : }
    1484                 : 
    1485                 : void
    1486               0 : StyleRule::SetCssText(const nsAString& aCssText)
    1487                 : {
    1488                 :   // XXX TBI - need to re-parse rule & declaration
    1489               0 : }
    1490                 : 
    1491                 : void
    1492               0 : StyleRule::GetSelectorText(nsAString& aSelectorText)
    1493                 : {
    1494               0 :   if (mSelector)
    1495               0 :     mSelector->ToString(aSelectorText, mSheet);
    1496                 :   else
    1497               0 :     aSelectorText.Truncate();
    1498               0 : }
    1499                 : 
    1500                 : void
    1501               0 : StyleRule::SetSelectorText(const nsAString& aSelectorText)
    1502                 : {
    1503                 :   // XXX TBI - get a parser and re-parse the selectors,
    1504                 :   // XXX then need to re-compute the cascade
    1505                 :   // XXX and dirty sheet
    1506               0 : }
    1507                 : 
    1508                 : /* virtual */ size_t
    1509               0 : StyleRule::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
    1510                 : {
    1511               0 :   size_t n = aMallocSizeOf(this);
    1512               0 :   n += mSelector ? mSelector->SizeOfIncludingThis(aMallocSizeOf) : 0;
    1513               0 :   n += mDeclaration ? mDeclaration->SizeOfIncludingThis(aMallocSizeOf) : 0;
    1514                 : 
    1515                 :   // Measurement of the following members may be added later if DMD finds it is
    1516                 :   // worthwhile:
    1517                 :   // - mImportantRule;
    1518                 :   // - mDOMRule;
    1519                 : 
    1520               0 :   return n;
    1521                 : }
    1522                 : 
    1523                 : 
    1524                 : } // namespace css
    1525                 : } // namespace mozilla

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