LCOV - code coverage report
Current view: directory - content/xul/content/src - nsXULElement.h (source / functions) Found Hit Coverage
Test: app.info Lines: 80 19 23.8 %
Date: 2012-06-02 Functions: 100 10 10.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       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                 :  *   Chris Waterson <waterson@netscape.com>
      24                 :  *   Peter Annema <disttsc@bart.nl>
      25                 :  *   Mike Shaver <shaver@mozilla.org>
      26                 :  *   Ben Goodger <ben@netscape.com>
      27                 :  *   Mark Hammond <mhammond@skippinet.com.au>
      28                 :  *
      29                 :  * Alternatively, the contents of this file may be used under the terms of
      30                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      31                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      32                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      33                 :  * of those above. If you wish to allow use of your version of this file only
      34                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      35                 :  * use your version of this file under the terms of the MPL, indicate your
      36                 :  * decision by deleting the provisions above and replace them with the notice
      37                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      38                 :  * the provisions above, a recipient may use your version of this file under
      39                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      40                 :  *
      41                 :  * ***** END LICENSE BLOCK ***** */
      42                 : 
      43                 : /*
      44                 : 
      45                 :   The base XUL element class and associates.
      46                 : 
      47                 : */
      48                 : 
      49                 : #ifndef nsXULElement_h__
      50                 : #define nsXULElement_h__
      51                 : 
      52                 : // XXX because nsEventListenerManager has broken includes
      53                 : #include "nsIDOMEvent.h"
      54                 : #include "nsIServiceManager.h"
      55                 : #include "nsIAtom.h"
      56                 : #include "nsINodeInfo.h"
      57                 : #include "nsIControllers.h"
      58                 : #include "nsIDOMElement.h"
      59                 : #include "nsIDOMEventTarget.h"
      60                 : #include "nsIDOMXULElement.h"
      61                 : #include "nsIDOMXULMultSelectCntrlEl.h"
      62                 : #include "nsEventListenerManager.h"
      63                 : #include "nsIRDFCompositeDataSource.h"
      64                 : #include "nsIRDFResource.h"
      65                 : #include "nsIScriptObjectOwner.h"
      66                 : #include "nsBindingManager.h"
      67                 : #include "nsIURI.h"
      68                 : #include "nsIXULTemplateBuilder.h"
      69                 : #include "nsIBoxObject.h"
      70                 : #include "nsIXBLService.h"
      71                 : #include "nsLayoutCID.h"
      72                 : #include "nsAttrAndChildArray.h"
      73                 : #include "nsGkAtoms.h"
      74                 : #include "nsAutoPtr.h"
      75                 : #include "nsStyledElement.h"
      76                 : #include "nsDOMScriptObjectHolder.h"
      77                 : #include "nsIFrameLoader.h"
      78                 : #include "jspubtd.h"
      79                 : 
      80                 : class nsIDocument;
      81                 : class nsString;
      82                 : class nsIDocShell;
      83                 : 
      84                 : class nsIObjectInputStream;
      85                 : class nsIObjectOutputStream;
      86                 : class nsIScriptGlobalObjectOwner;
      87                 : class nsXULPrototypeNode;
      88                 : typedef nsTArray<nsRefPtr<nsXULPrototypeNode> > nsPrototypeArray;
      89                 : 
      90                 : namespace mozilla {
      91                 : namespace css {
      92                 : class StyleRule;
      93                 : }
      94                 : }
      95                 : 
      96                 : ////////////////////////////////////////////////////////////////////////
      97                 : 
      98                 : #ifdef XUL_PROTOTYPE_ATTRIBUTE_METERING
      99                 : #define XUL_PROTOTYPE_ATTRIBUTE_METER(counter) (nsXULPrototypeAttribute::counter++)
     100                 : #else
     101                 : #define XUL_PROTOTYPE_ATTRIBUTE_METER(counter) ((void) 0)
     102                 : #endif
     103                 : 
     104                 : 
     105                 : /**
     106                 : 
     107                 :   A prototype attribute for an nsXULPrototypeElement.
     108                 : 
     109                 :  */
     110                 : 
     111                 : class nsXULPrototypeAttribute
     112                 : {
     113                 : public:
     114               0 :     nsXULPrototypeAttribute()
     115                 :         : mName(nsGkAtoms::id),  // XXX this is a hack, but names have to have a value
     116               0 :           mEventHandler(nsnull)
     117                 :     {
     118                 :         XUL_PROTOTYPE_ATTRIBUTE_METER(gNumAttributes);
     119               0 :         MOZ_COUNT_CTOR(nsXULPrototypeAttribute);
     120               0 :     }
     121                 : 
     122                 :     ~nsXULPrototypeAttribute();
     123                 : 
     124                 :     nsAttrName mName;
     125                 :     nsAttrValue mValue;
     126                 :     // mEventHandler is only valid for the language ID specified in the
     127                 :     // containing nsXULPrototypeElement.  We would ideally use
     128                 :     // nsScriptObjectHolder, but want to avoid the extra lang ID.
     129                 :     JSObject* mEventHandler;
     130                 : 
     131                 : #ifdef XUL_PROTOTYPE_ATTRIBUTE_METERING
     132                 :     /**
     133                 :       If enough attributes, on average, are event handlers, it pays to keep
     134                 :       mEventHandler here, instead of maintaining a separate mapping in each
     135                 :       nsXULElement associating those mName values with their mEventHandlers.
     136                 :       Assume we don't need to keep mNameSpaceID along with mName in such an
     137                 :       event-handler-only name-to-function-pointer mapping.
     138                 : 
     139                 :       Let
     140                 :         minAttrSize  = sizeof(mNodeInof) + sizeof(mValue)
     141                 :         mappingSize  = sizeof(mNodeInfo) + sizeof(mEventHandler)
     142                 :         elemOverhead = nElems * sizeof(MappingPtr)
     143                 : 
     144                 :       Then
     145                 :         nAttrs * minAttrSize + nEventHandlers * mappingSize + elemOverhead
     146                 :         > nAttrs * (minAttrSize + mappingSize - sizeof(mNodeInfo))
     147                 :       which simplifies to
     148                 :         nEventHandlers * mappingSize + elemOverhead
     149                 :         > nAttrs * (mappingSize - sizeof(mNodeInfo))
     150                 :       or
     151                 :         nEventHandlers + (nElems * sizeof(MappingPtr)) / mappingSize
     152                 :         > nAttrs * (1 - sizeof(mNodeInfo) / mappingSize)
     153                 : 
     154                 :       If nsCOMPtr and all other pointers are the same size, this reduces to
     155                 :         nEventHandlers + nElems / 2 > nAttrs / 2
     156                 : 
     157                 :       To measure how many attributes are event handlers, compile XUL source
     158                 :       with XUL_PROTOTYPE_ATTRIBUTE_METERING and watch the counters below.
     159                 :       Plug into the above relation -- if true, it pays to put mEventHandler
     160                 :       in nsXULPrototypeAttribute rather than to keep a separate mapping.
     161                 : 
     162                 :       Recent numbers after opening four browser windows:
     163                 :         nElems 3537, nAttrs 2528, nEventHandlers 1042
     164                 :       giving 1042 + 3537/2 > 2528/2 or 2810 > 1264.
     165                 : 
     166                 :       As it happens, mEventHandler also makes this struct power-of-2 sized,
     167                 :       8 words on most architectures, which makes for strength-reduced array
     168                 :       index-to-pointer calculations.
     169                 :      */
     170                 :     static PRUint32   gNumElements;
     171                 :     static PRUint32   gNumAttributes;
     172                 :     static PRUint32   gNumEventHandlers;
     173                 :     static PRUint32   gNumCacheTests;
     174                 :     static PRUint32   gNumCacheHits;
     175                 :     static PRUint32   gNumCacheSets;
     176                 :     static PRUint32   gNumCacheFills;
     177                 : #endif /* !XUL_PROTOTYPE_ATTRIBUTE_METERING */
     178                 : };
     179                 : 
     180                 : 
     181                 : /**
     182                 : 
     183                 :   A prototype content model element that holds the "primordial" values
     184                 :   that have been parsed from the original XUL document. A
     185                 :   'lightweight' nsXULElement may delegate its representation to this
     186                 :   structure, which is shared.
     187                 : 
     188                 :  */
     189                 : 
     190                 : class nsXULPrototypeNode : public nsISupports
     191                 : {
     192                 : public:
     193                 :     enum Type { eType_Element, eType_Script, eType_Text, eType_PI };
     194                 : 
     195                 :     Type                     mType;
     196                 : 
     197               0 :     NS_DECL_CYCLE_COLLECTING_ISUPPORTS
     198                 : 
     199               0 :     virtual ~nsXULPrototypeNode() {}
     200                 :     virtual nsresult Serialize(nsIObjectOutputStream* aStream,
     201                 :                                nsIScriptGlobalObject* aGlobal,
     202                 :                                const nsCOMArray<nsINodeInfo> *aNodeInfos) = 0;
     203                 :     virtual nsresult Deserialize(nsIObjectInputStream* aStream,
     204                 :                                  nsIScriptGlobalObject* aGlobal,
     205                 :                                  nsIURI* aDocumentURI,
     206                 :                                  const nsCOMArray<nsINodeInfo> *aNodeInfos) = 0;
     207                 : 
     208                 : #ifdef NS_BUILD_REFCNT_LOGGING
     209                 :     virtual const char* ClassName() = 0;
     210                 :     virtual PRUint32 ClassSize() = 0;
     211                 : #endif
     212                 : 
     213                 :     /**
     214                 :      * The prototype document must call ReleaseSubtree when it is going
     215                 :      * away.  This makes the parents through the tree stop owning their
     216                 :      * children, whether or not the parent's reference count is zero.
     217                 :      * Individual elements may still own individual prototypes, but
     218                 :      * those prototypes no longer remember their children to allow them
     219                 :      * to be constructed.
     220                 :      */
     221               0 :     virtual void ReleaseSubtree() { }
     222                 : 
     223            1464 :     NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsXULPrototypeNode)
     224                 : 
     225                 : protected:
     226               0 :     nsXULPrototypeNode(Type aType)
     227               0 :         : mType(aType) {}
     228                 : };
     229                 : 
     230                 : class nsXULPrototypeElement : public nsXULPrototypeNode
     231                 : {
     232                 : public:
     233               0 :     nsXULPrototypeElement()
     234                 :         : nsXULPrototypeNode(eType_Element),
     235                 :           mNumAttributes(0),
     236                 :           mAttributes(nsnull),
     237                 :           mHasIdAttribute(false),
     238                 :           mHasClassAttribute(false),
     239                 :           mHasStyleAttribute(false),
     240                 :           mHoldsScriptObject(false),
     241               0 :           mScriptTypeID(nsIProgrammingLanguage::UNKNOWN)
     242                 :     {
     243               0 :     }
     244                 : 
     245               0 :     virtual ~nsXULPrototypeElement()
     246               0 :     {
     247               0 :         Unlink();
     248               0 :     }
     249                 : 
     250                 : #ifdef NS_BUILD_REFCNT_LOGGING
     251               0 :     virtual const char* ClassName() { return "nsXULPrototypeElement"; }
     252               0 :     virtual PRUint32 ClassSize() { return sizeof(*this); }
     253                 : #endif
     254                 : 
     255               0 :     virtual void ReleaseSubtree()
     256                 :     {
     257               0 :         for (PRInt32 i = mChildren.Length() - 1; i >= 0; i--) {
     258               0 :             if (mChildren[i].get())
     259               0 :                 mChildren[i]->ReleaseSubtree();
     260                 :         }
     261               0 :         mChildren.Clear();
     262               0 :         nsXULPrototypeNode::ReleaseSubtree();
     263               0 :     }
     264                 : 
     265                 :     virtual nsresult Serialize(nsIObjectOutputStream* aStream,
     266                 :                                nsIScriptGlobalObject* aGlobal,
     267                 :                                const nsCOMArray<nsINodeInfo> *aNodeInfos);
     268                 :     virtual nsresult Deserialize(nsIObjectInputStream* aStream,
     269                 :                                  nsIScriptGlobalObject* aGlobal,
     270                 :                                  nsIURI* aDocumentURI,
     271                 :                                  const nsCOMArray<nsINodeInfo> *aNodeInfos);
     272                 : 
     273                 :     nsresult SetAttrAt(PRUint32 aPos, const nsAString& aValue, nsIURI* aDocumentURI);
     274                 : 
     275                 :     void Unlink();
     276                 : 
     277                 :     nsPrototypeArray         mChildren;
     278                 : 
     279                 :     nsCOMPtr<nsINodeInfo>    mNodeInfo;           // [OWNER]
     280                 : 
     281                 :     PRUint32                 mNumAttributes;
     282                 :     nsXULPrototypeAttribute* mAttributes;         // [OWNER]
     283                 :     
     284                 :     bool                     mHasIdAttribute:1;
     285                 :     bool                     mHasClassAttribute:1;
     286                 :     bool                     mHasStyleAttribute:1;
     287                 :     bool                     mHoldsScriptObject:1;
     288                 : 
     289                 :     // The language ID can not be set on a per-node basis, but is tracked
     290                 :     // so that the language ID from the originating root can be used
     291                 :     // (eg, when a node from an overlay ends up in our document, that node
     292                 :     // must use its original script language, not our document's default.
     293                 :     PRUint16                 mScriptTypeID;
     294                 : };
     295                 : 
     296                 : class nsXULDocument;
     297                 : 
     298                 : class nsXULPrototypeScript : public nsXULPrototypeNode
     299                 : {
     300                 : public:
     301                 :     nsXULPrototypeScript(PRUint32 aLangID, PRUint32 aLineNo, PRUint32 version);
     302                 :     virtual ~nsXULPrototypeScript();
     303                 : 
     304                 : #ifdef NS_BUILD_REFCNT_LOGGING
     305               0 :     virtual const char* ClassName() { return "nsXULPrototypeScript"; }
     306               0 :     virtual PRUint32 ClassSize() { return sizeof(*this); }
     307                 : #endif
     308                 : 
     309                 :     virtual nsresult Serialize(nsIObjectOutputStream* aStream,
     310                 :                                nsIScriptGlobalObject* aGlobal,
     311                 :                                const nsCOMArray<nsINodeInfo> *aNodeInfos);
     312                 :     nsresult SerializeOutOfLine(nsIObjectOutputStream* aStream,
     313                 :                                 nsIScriptGlobalObject* aGlobal);
     314                 :     virtual nsresult Deserialize(nsIObjectInputStream* aStream,
     315                 :                                  nsIScriptGlobalObject* aGlobal,
     316                 :                                  nsIURI* aDocumentURI,
     317                 :                                  const nsCOMArray<nsINodeInfo> *aNodeInfos);
     318                 :     nsresult DeserializeOutOfLine(nsIObjectInputStream* aInput,
     319                 :                                   nsIScriptGlobalObject* aGlobal);
     320                 : 
     321                 :     nsresult Compile(const PRUnichar* aText, PRInt32 aTextLength,
     322                 :                      nsIURI* aURI, PRUint32 aLineNo,
     323                 :                      nsIDocument* aDocument,
     324                 :                      nsIScriptGlobalObjectOwner* aGlobalOwner);
     325                 : 
     326                 :     void UnlinkJSObjects();
     327                 : 
     328               0 :     void Set(nsScriptObjectHolder<JSScript>& aHolder)
     329                 :     {
     330               0 :         NS_ASSERTION(mScriptObject.mLangID == aHolder.getScriptTypeID(),
     331                 :                      "Wrong language, this will leak the previous object.");
     332                 : 
     333               0 :         mScriptObject.mLangID = aHolder.getScriptTypeID();
     334               0 :         Set(aHolder.get());
     335               0 :     }
     336                 :     void Set(JSScript* aObject);
     337                 : 
     338                 :     struct ScriptObjectHolder
     339                 :     {
     340               0 :         ScriptObjectHolder(PRUint32 aLangID) : mLangID(aLangID),
     341               0 :                                                mObject(nsnull)
     342                 :         {
     343               0 :         }
     344                 :         PRUint32 mLangID;
     345                 :         JSScript* mObject;
     346                 :     };
     347                 :     nsCOMPtr<nsIURI>         mSrcURI;
     348                 :     PRUint32                 mLineNo;
     349                 :     bool                     mSrcLoading;
     350                 :     bool                     mOutOfLine;
     351                 :     nsXULDocument*           mSrcLoadWaiters;   // [OWNER] but not COMPtr
     352                 :     PRUint32                 mLangVersion;
     353                 :     ScriptObjectHolder       mScriptObject;
     354                 : };
     355                 : 
     356                 : class nsXULPrototypeText : public nsXULPrototypeNode
     357                 : {
     358                 : public:
     359               0 :     nsXULPrototypeText()
     360               0 :         : nsXULPrototypeNode(eType_Text)
     361                 :     {
     362               0 :     }
     363                 : 
     364               0 :     virtual ~nsXULPrototypeText()
     365               0 :     {
     366               0 :     }
     367                 : 
     368                 : #ifdef NS_BUILD_REFCNT_LOGGING
     369               0 :     virtual const char* ClassName() { return "nsXULPrototypeText"; }
     370               0 :     virtual PRUint32 ClassSize() { return sizeof(*this); }
     371                 : #endif
     372                 : 
     373                 :     virtual nsresult Serialize(nsIObjectOutputStream* aStream,
     374                 :                                nsIScriptGlobalObject* aGlobal,
     375                 :                                const nsCOMArray<nsINodeInfo> *aNodeInfos);
     376                 :     virtual nsresult Deserialize(nsIObjectInputStream* aStream,
     377                 :                                  nsIScriptGlobalObject* aGlobal,
     378                 :                                  nsIURI* aDocumentURI,
     379                 :                                  const nsCOMArray<nsINodeInfo> *aNodeInfos);
     380                 : 
     381                 :     nsString                 mValue;
     382                 : };
     383                 : 
     384                 : class nsXULPrototypePI : public nsXULPrototypeNode
     385                 : {
     386                 : public:
     387               0 :     nsXULPrototypePI()
     388               0 :         : nsXULPrototypeNode(eType_PI)
     389                 :     {
     390               0 :     }
     391                 : 
     392               0 :     virtual ~nsXULPrototypePI()
     393               0 :     {
     394               0 :     }
     395                 : 
     396                 : #ifdef NS_BUILD_REFCNT_LOGGING
     397               0 :     virtual const char* ClassName() { return "nsXULPrototypePI"; }
     398               0 :     virtual PRUint32 ClassSize() { return sizeof(*this); }
     399                 : #endif
     400                 : 
     401                 :     virtual nsresult Serialize(nsIObjectOutputStream* aStream,
     402                 :                                nsIScriptGlobalObject* aGlobal,
     403                 :                                const nsCOMArray<nsINodeInfo> *aNodeInfos);
     404                 :     virtual nsresult Deserialize(nsIObjectInputStream* aStream,
     405                 :                                  nsIScriptGlobalObject* aGlobal,
     406                 :                                  nsIURI* aDocumentURI,
     407                 :                                  const nsCOMArray<nsINodeInfo> *aNodeInfos);
     408                 : 
     409                 :     nsString                 mTarget;
     410                 :     nsString                 mData;
     411                 : };
     412                 : 
     413                 : ////////////////////////////////////////////////////////////////////////
     414                 : 
     415                 : /**
     416                 : 
     417                 :   The XUL element.
     418                 : 
     419                 :  */
     420                 : 
     421                 : #define XUL_ELEMENT_TEMPLATE_GENERATED (1 << ELEMENT_TYPE_SPECIFIC_BITS_OFFSET)
     422                 : 
     423                 : // Make sure we have space for our bit
     424                 : PR_STATIC_ASSERT(ELEMENT_TYPE_SPECIFIC_BITS_OFFSET < 32);
     425                 : 
     426                 : class nsScriptEventHandlerOwnerTearoff;
     427                 : 
     428                 : class nsXULElement : public nsStyledElement, public nsIDOMXULElement
     429             576 : {
     430                 : public:
     431                 : 
     432                 :     /** Typesafe, non-refcounting cast from nsIContent.  Cheaper than QI. **/
     433          156681 :     static nsXULElement* FromContent(nsIContent *aContent)
     434                 :     {
     435          156681 :         if (aContent->IsXUL())
     436             579 :             return static_cast<nsXULElement*>(aContent);
     437          156102 :         return nsnull;
     438                 :     }
     439                 : 
     440                 : public:
     441                 :     static nsIXBLService* GetXBLService() {
     442                 :         if (!gXBLService)
     443                 :             CallGetService("@mozilla.org/xbl;1", &gXBLService);
     444                 :         return gXBLService;
     445                 :     }
     446            1403 :     static void ReleaseGlobals() {
     447            1403 :         NS_IF_RELEASE(gXBLService);
     448            1403 :     }
     449                 : 
     450                 : protected:
     451                 :     // pseudo-constants
     452                 :     static nsIXBLService*       gXBLService;
     453                 : 
     454                 : public:
     455                 :     nsXULElement(already_AddRefed<nsINodeInfo> aNodeInfo);
     456                 : 
     457                 :     static nsresult
     458                 :     Create(nsXULPrototypeElement* aPrototype, nsIDocument* aDocument,
     459                 :            bool aIsScriptable, mozilla::dom::Element** aResult);
     460                 : 
     461                 :     // nsISupports
     462                 :     NS_DECL_ISUPPORTS_INHERITED
     463            1608 :     NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED_NO_UNLINK(nsXULElement,
     464                 :                                                        nsGenericElement)
     465                 : 
     466                 :     // nsINode
     467                 :     virtual nsresult PreHandleEvent(nsEventChainPreVisitor& aVisitor);
     468                 : 
     469                 :     // nsIContent
     470                 :     virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
     471                 :                                 nsIContent* aBindingParent,
     472                 :                                 bool aCompileEventHandlers);
     473                 :     virtual void UnbindFromTree(bool aDeep, bool aNullParent);
     474                 :     virtual nsresult RemoveChildAt(PRUint32 aIndex, bool aNotify);
     475                 :     virtual bool GetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
     476                 :                            nsAString& aResult) const;
     477                 :     virtual bool HasAttr(PRInt32 aNameSpaceID, nsIAtom* aName) const;
     478                 :     virtual bool AttrValueIs(PRInt32 aNameSpaceID, nsIAtom* aName,
     479                 :                                const nsAString& aValue,
     480                 :                                nsCaseTreatment aCaseSensitive) const;
     481                 :     virtual bool AttrValueIs(PRInt32 aNameSpaceID, nsIAtom* aName,
     482                 :                                nsIAtom* aValue,
     483                 :                                nsCaseTreatment aCaseSensitive) const;
     484                 :     virtual PRInt32 FindAttrValueIn(PRInt32 aNameSpaceID,
     485                 :                                     nsIAtom* aName,
     486                 :                                     AttrValuesArray* aValues,
     487                 :                                     nsCaseTreatment aCaseSensitive) const;
     488                 :     virtual nsresult UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
     489                 :                                bool aNotify);
     490                 :     virtual const nsAttrName* GetAttrNameAt(PRUint32 aIndex) const;
     491                 :     virtual PRUint32 GetAttrCount() const;
     492                 :     virtual void DestroyContent();
     493                 : 
     494                 : #ifdef DEBUG
     495                 :     virtual void List(FILE* out, PRInt32 aIndent) const;
     496               0 :     virtual void DumpContent(FILE* out, PRInt32 aIndent,bool aDumpAll) const
     497                 :     {
     498               0 :     }
     499                 : #endif
     500                 : 
     501                 :     virtual void PerformAccesskey(bool aKeyCausesActivation,
     502                 :                                   bool aIsTrustedEvent);
     503                 :     nsresult ClickWithInputSource(PRUint16 aInputSource);
     504                 : 
     505                 :     virtual nsIContent *GetBindingParent() const;
     506                 :     virtual bool IsNodeOfType(PRUint32 aFlags) const;
     507                 :     virtual bool IsFocusable(PRInt32 *aTabIndex = nsnull, bool aWithMouse = false);
     508                 :     virtual nsIAtom* DoGetID() const;
     509                 :     virtual const nsAttrValue* DoGetClasses() const;
     510                 : 
     511                 :     NS_IMETHOD WalkContentStyleRules(nsRuleWalker* aRuleWalker);
     512                 :     virtual mozilla::css::StyleRule* GetInlineStyleRule();
     513                 :     virtual nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute,
     514                 :                                                 PRInt32 aModType) const;
     515                 :     NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const;
     516                 : 
     517                 :     // XUL element methods
     518                 :     /**
     519                 :      * The template-generated flag is used to indicate that a
     520                 :      * template-generated element has already had its children generated.
     521                 :      */
     522               0 :     void SetTemplateGenerated() { SetFlags(XUL_ELEMENT_TEMPLATE_GENERATED); }
     523               0 :     void ClearTemplateGenerated() { UnsetFlags(XUL_ELEMENT_TEMPLATE_GENERATED); }
     524               0 :     bool GetTemplateGenerated() { return HasFlag(XUL_ELEMENT_TEMPLATE_GENERATED); }
     525                 : 
     526                 :     // nsIDOMNode
     527               0 :     NS_FORWARD_NSIDOMNODE(nsGenericElement::)
     528                 : 
     529                 :     // nsIDOMElement
     530               0 :     NS_FORWARD_NSIDOMELEMENT(nsGenericElement::)
     531                 : 
     532                 :     // nsIDOMXULElement
     533                 :     NS_DECL_NSIDOMXULELEMENT
     534                 : 
     535                 :     virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
     536                 :     virtual nsEventStates IntrinsicState() const;
     537                 : 
     538                 :     nsresult EnsureLocalStyle();
     539                 : 
     540                 :     nsresult GetFrameLoader(nsIFrameLoader** aFrameLoader);
     541                 :     already_AddRefed<nsFrameLoader> GetFrameLoader();
     542                 :     nsresult SwapFrameLoaders(nsIFrameLoaderOwner* aOtherOwner);
     543                 : 
     544                 :     virtual void RecompileScriptEventListeners();
     545                 : 
     546                 :     // This function should ONLY be used by BindToTree implementations.
     547                 :     // The function exists solely because XUL elements store the binding
     548                 :     // parent as a member instead of in the slots, as nsGenericElement does.
     549             579 :     void SetXULBindingParent(nsIContent* aBindingParent)
     550                 :     {
     551             579 :       mBindingParent = aBindingParent;
     552             579 :     }
     553                 : 
     554                 :     /**
     555                 :      * Get the attr info for the given namespace ID and attribute name.
     556                 :      * The namespace ID must not be kNameSpaceID_Unknown and the name
     557                 :      * must not be null.
     558                 :      */
     559                 :     virtual nsAttrInfo GetAttrInfo(PRInt32 aNamespaceID, nsIAtom* aName) const;
     560                 : 
     561                 :     virtual nsXPCClassInfo* GetClassInfo();
     562                 : protected:
     563                 :     // XXX This can be removed when nsNodeUtils::CloneAndAdopt doesn't need
     564                 :     //     access to mPrototype anymore.
     565                 :     friend class nsNodeUtils;
     566                 : 
     567                 :     // This can be removed if EnsureContentsGenerated dies.
     568                 :     friend class nsNSElementTearoff;
     569                 : 
     570                 :     // Implementation methods
     571                 :     nsresult EnsureContentsGenerated(void) const;
     572                 : 
     573                 :     nsresult ExecuteOnBroadcastHandler(nsIDOMElement* anElement, const nsAString& attrName);
     574                 : 
     575                 :     static nsresult
     576                 :     ExecuteJSCode(nsIDOMElement* anElement, nsEvent* aEvent);
     577                 : 
     578                 :     // Helper routine that crawls a parent chain looking for a tree element.
     579                 :     NS_IMETHOD GetParentTree(nsIDOMXULMultiSelectControlElement** aTreeElement);
     580                 : 
     581                 :     nsresult AddPopupListener(nsIAtom* aName);
     582                 : 
     583                 :     class nsXULSlots : public nsGenericElement::nsDOMSlots
     584                 :     {
     585                 :     public:
     586                 :         nsXULSlots();
     587                 :         virtual ~nsXULSlots();
     588                 : 
     589                 :         void Traverse(nsCycleCollectionTraversalCallback &cb);
     590                 : 
     591                 :         nsRefPtr<nsFrameLoader> mFrameLoader;
     592                 :     };
     593                 : 
     594                 :     virtual nsINode::nsSlots* CreateSlots();
     595                 : 
     596                 :     nsresult LoadSrc();
     597                 : 
     598                 :     // Required fields
     599                 :     nsRefPtr<nsXULPrototypeElement>     mPrototype;
     600                 : 
     601                 :     /**
     602                 :      * The nearest enclosing content node with a binding
     603                 :      * that created us. [Weak]
     604                 :      */
     605                 :     nsIContent*                         mBindingParent;
     606                 : 
     607                 :     /**
     608                 :      * Abandon our prototype linkage, and copy all attributes locally
     609                 :      */
     610                 :     nsresult MakeHeavyweight();
     611                 : 
     612            1253 :     const nsAttrValue* FindLocalOrProtoAttr(PRInt32 aNameSpaceID,
     613                 :                                             nsIAtom *aName) const {
     614            1253 :         return nsXULElement::GetAttrInfo(aNameSpaceID, aName).mValue;
     615                 :     }
     616                 : 
     617                 :     virtual nsresult BeforeSetAttr(PRInt32 aNamespaceID, nsIAtom* aName,
     618                 :                                    const nsAttrValueOrString* aValue,
     619                 :                                    bool aNotify);
     620                 :     virtual nsresult AfterSetAttr(PRInt32 aNamespaceID, nsIAtom* aName,
     621                 :                                   const nsAttrValue* aValue, bool aNotify);
     622                 : 
     623                 :     virtual void UpdateEditableState(bool aNotify);
     624                 : 
     625                 :     virtual bool ParseAttribute(PRInt32 aNamespaceID,
     626                 :                                   nsIAtom* aAttribute,
     627                 :                                   const nsAString& aValue,
     628                 :                                   nsAttrValue& aResult);
     629                 : 
     630                 :     virtual nsEventListenerManager*
     631                 :       GetEventListenerManagerForAttr(nsIAtom* aAttrName, bool* aDefer);
     632                 :   
     633                 :     /**
     634                 :      * Return our prototype's attribute, if one exists.
     635                 :      */
     636                 :     nsXULPrototypeAttribute *FindPrototypeAttribute(PRInt32 aNameSpaceID,
     637                 :                                                     nsIAtom *aName) const;
     638                 :     /**
     639                 :      * Add a listener for the specified attribute, if appropriate.
     640                 :      */
     641                 :     void AddListenerFor(const nsAttrName& aName,
     642                 :                         bool aCompileEventHandlers);
     643                 :     void MaybeAddPopupListener(nsIAtom* aLocalName);
     644                 : 
     645                 :     nsIWidget* GetWindowWidget();
     646                 : 
     647                 :     // attribute setters for widget
     648                 :     nsresult HideWindowChrome(bool aShouldHide);
     649                 :     void SetChromeMargins(const nsAttrValue* aValue);
     650                 :     void ResetChromeMargins();
     651                 :     void SetTitlebarColor(nscolor aColor, bool aActive);
     652                 : 
     653                 :     void SetDrawsInTitlebar(bool aState);
     654                 : 
     655                 :     const nsAttrName* InternalGetExistingAttrNameFromQName(const nsAString& aStr) const;
     656                 : 
     657                 :     void RemoveBroadcaster(const nsAString & broadcasterId);
     658                 : 
     659                 : protected:
     660                 :     // Internal accessor. This shadows the 'Slots', and returns
     661                 :     // appropriate value.
     662               0 :     nsIControllers *Controllers() {
     663               0 :       nsDOMSlots* slots = GetExistingDOMSlots();
     664               0 :       return slots ? slots->mControllers : nsnull; 
     665                 :     }
     666                 : 
     667                 :     void UnregisterAccessKey(const nsAString& aOldValue);
     668                 :     bool BoolAttrIsTrue(nsIAtom* aName);
     669                 : 
     670                 :     friend nsresult
     671                 :     NS_NewXULElement(nsIContent** aResult, nsINodeInfo *aNodeInfo);
     672                 :     friend void
     673                 :     NS_TrustedNewXULElement(nsIContent** aResult, nsINodeInfo *aNodeInfo);
     674                 : 
     675                 :     static already_AddRefed<nsXULElement>
     676                 :     Create(nsXULPrototypeElement* aPrototype, nsINodeInfo *aNodeInfo,
     677                 :            bool aIsScriptable);
     678                 : 
     679                 :     friend class nsScriptEventHandlerOwnerTearoff;
     680                 : 
     681             472 :     bool IsReadWriteTextElement() const
     682                 :     {
     683             472 :         const nsIAtom* tag = Tag();
     684                 :         return
     685             472 :             GetNameSpaceID() == kNameSpaceID_XUL &&
     686                 :             (tag == nsGkAtoms::textbox || tag == nsGkAtoms::textarea) &&
     687             472 :             !HasAttr(kNameSpaceID_None, nsGkAtoms::readonly);
     688                 :     }
     689                 : };
     690                 : 
     691                 : #endif // nsXULElement_h__

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