LCOV - app.info - content/xbl/src/nsXBLService.h

LCOV - code coverage report
| Current view: | directory - content/xbl/src - nsXBLService.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 3 | 0 | 0.0 %
| Date: | 2012-07-07 | Functions: | 3 | 0 | 0.0 %

           1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
           2                 : /* ***** BEGIN LICENSE BLOCK *****
           3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           4                 :  *
           5                 :  * The contents of this file are subject to the Mozilla Public License Version
           6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           7                 :  * the License. You may obtain a copy of the License at
           8                 :  * http://www.mozilla.org/MPL/
           9                 :  *
          10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          12                 :  * for the specific language governing rights and limitations under the
          13                 :  * License.
          14                 :  *
          15                 :  * The Original Code is Mozilla Communicator client code.
          16                 :  *
          17                 :  * The Initial Developer of the Original Code is
          18                 :  * Netscape Communications Corporation.
          19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
          20                 :  * the Initial Developer. All Rights Reserved.
          21                 :  *
          22                 :  * Contributor(s):
          23                 :  *   Original Author: David W. Hyatt (hyatt@netscape.com)
          24                 :  *   - Brendan Eich (brendan@mozilla.org)
          25                 :  *   - Mike Pinkerton (pinkerton@netscape.com)
          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                 :
          43                 : #include "nsIXBLService.h"
          44                 : #include "nsIObserver.h"
          45                 : #include "nsWeakReference.h"
          46                 : #include "jsapi.h"              // nsXBLJSClass derives from JSClass
          47                 : #include "jsclist.h"            // nsXBLJSClass derives from JSCList
          48                 : #include "nsFixedSizeAllocator.h"
          49                 : #include "nsTArray.h"
          50                 :
          51                 : class nsXBLBinding;
          52                 : class nsXBLDocumentInfo;
          53                 : class nsIContent;
          54                 : class nsIDocument;
          55                 : class nsIAtom;
          56                 : class nsString;
          57                 : class nsIURI;
          58                 : class nsSupportsHashtable;
          59                 : class nsHashtable;
          60                 :
          61                 : class nsXBLService : public nsIXBLService,
          62                 :                      public nsIObserver,
          63                 :                      public nsSupportsWeakReference
          64                 : {
          65                 :   NS_DECL_ISUPPORTS
          66                 :
          67                 :   static bool IsChromeOrResourceURI(nsIURI* aURI);
          68                 :
          69                 :   // This function loads a particular XBL file and installs all of the bindings
          70                 :   // onto the element.  aOriginPrincipal must not be null here.
          71                 :   NS_IMETHOD LoadBindings(nsIContent* aContent, nsIURI* aURL,
          72                 :                           nsIPrincipal* aOriginPrincipal, bool aAugmentFlag,
          73                 :                           nsXBLBinding** aBinding, bool* aResolveStyle);
          74                 :
          75                 :   // Indicates whether or not a binding is fully loaded.
          76                 :   NS_IMETHOD BindingReady(nsIContent* aBoundElement, nsIURI* aURI, bool* aIsReady);
          77                 :
          78                 :   // Gets the object's base class type.
          79                 :   NS_IMETHOD ResolveTag(nsIContent* aContent, PRInt32* aNameSpaceID, nsIAtom** aResult);
          80                 :
          81                 :   // This method checks the hashtable and then calls FetchBindingDocument on a
          82                 :   // miss.  aOriginPrincipal or aBoundDocument may be null to bypass security
          83                 :   // checks.
          84                 :   NS_IMETHOD LoadBindingDocumentInfo(nsIContent* aBoundElement,
          85                 :                                      nsIDocument* aBoundDocument,
          86                 :                                      nsIURI* aBindingURI,
          87                 :                                      nsIPrincipal* aOriginPrincipal,
          88                 :                                      bool aForceSyncLoad,
          89                 :                                      nsXBLDocumentInfo** aResult);
          90                 :
          91                 :   // Used by XUL key bindings and for window XBL.
          92                 :   NS_IMETHOD AttachGlobalKeyHandler(nsIDOMEventTarget* aTarget);
          93                 :   NS_IMETHOD DetachGlobalKeyHandler(nsIDOMEventTarget* aTarget);
          94                 :
          95                 :   NS_DECL_NSIOBSERVER
          96                 :
          97                 : public:
          98                 :   nsXBLService();
          99                 :   virtual ~nsXBLService();
         100                 :
         101                 : protected:
         102                 :   // This function clears out the bindings on a given content node.
         103                 :   nsresult FlushStyleBindings(nsIContent* aContent);
         104                 :
         105                 :   // Release any memory that we can
         106                 :   nsresult FlushMemory();
         107                 :
         108                 :   // This method synchronously loads and parses an XBL file.
         109                 :   nsresult FetchBindingDocument(nsIContent* aBoundElement, nsIDocument* aBoundDocument,
         110                 :                                 nsIURI* aDocumentURI, nsIURI* aBindingURI,
         111                 :                                 bool aForceSyncLoad, nsIDocument** aResult);
         112                 :
         113                 :   /**
         114                 :    * This method calls the one below with an empty |aDontExtendURIs| array.
         115                 :    */
         116                 :   nsresult GetBinding(nsIContent* aBoundElement, nsIURI* aURI,
         117                 :                       bool aPeekFlag, nsIPrincipal* aOriginPrincipal,
         118                 :                       bool* aIsReady, nsXBLBinding** aResult);
         119                 :
         120                 :   /**
         121                 :    * This method loads a binding doc and then builds the specific binding
         122                 :    * required. It can also peek without building.
         123                 :    * @param aBoundElement the element to get a binding for
         124                 :    * @param aURI the binding URI
         125                 :    * @param aPeekFlag if true then just peek to see if the binding is ready
         126                 :    * @param aIsReady [out] if the binding is ready or not
         127                 :    * @param aResult [out] where to store the resulting binding (not used if
         128                 :    *                      aPeekFlag is true, otherwise it must be non-null)
         129                 :    * @param aDontExtendURIs a set of URIs that are already bound to this
         130                 :    *        element. If a binding extends any of these then further loading
         131                 :    *        is aborted (because it would lead to the binding extending itself)
         132                 :    *        and NS_ERROR_ILLEGAL_VALUE is returned.
         133                 :    *
         134                 :    * @note This method always calls LoadBindingDocumentInfo(), so it's
         135                 :    *       enough to funnel all security checks through that function.
         136                 :    */
         137                 :   nsresult GetBinding(nsIContent* aBoundElement, nsIURI* aURI,
         138                 :                       bool aPeekFlag, nsIPrincipal* aOriginPrincipal,
         139                 :                       bool* aIsReady, nsXBLBinding** aResult,
         140                 :                       nsTArray<nsIURI*>& aDontExtendURIs);
         141                 :
         142                 : // MEMBER VARIABLES
         143                 : public:
         144                 :   static PRUint32 gRefCnt;                   // A count of XBLservice instances.
         145                 :
         146                 :   static bool gDisableChromeCache;
         147                 :
         148                 :   static nsHashtable* gClassTable;           // A table of nsXBLJSClass objects.
         149                 :
         150                 :   static JSCList  gClassLRUList;             // LRU list of cached classes.
         151                 :   static PRUint32 gClassLRUListLength;       // Number of classes on LRU list.
         152                 :   static PRUint32 gClassLRUListQuota;        // Quota on class LRU list.
         153                 :   static bool     gAllowDataURIs;            // Whether we should allow data
         154                 :                                              // urls in -moz-binding. Needed for
         155                 :                                              // testing.
         156                 :
         157                 :   nsFixedSizeAllocator mPool;
         158                 : };
         159                 :
         160                 : class nsXBLJSClass : public JSCList, public JSClass
         161                 : {
         162                 : private:
         163                 :   nsrefcnt mRefCnt;
         164                 :   nsrefcnt Destroy();
         165                 :
         166                 : public:
         167                 :   nsXBLJSClass(const nsAFlatCString& aClassName);
         168               0 :   ~nsXBLJSClass() { nsMemory::Free((void*) name); }
         169                 :
         170               0 :   nsrefcnt Hold() { return ++mRefCnt; }
         171               0 :   nsrefcnt Drop() { return --mRefCnt ? mRefCnt : Destroy(); }
         172                 : };
         173                 :

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