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lightning-sunbird  0.9+nobinonly
nsXBLResourceLoader.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Mozilla Communicator client code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Original Author: David W. Hyatt (hyatt@netscape.com)
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #include "nsCOMPtr.h"
00040 #include "nsICSSLoaderObserver.h"
00041 #include "nsISupportsArray.h"
00042 
00043 class nsIContent;
00044 class nsIAtom;
00045 class nsIDocument;
00046 class nsIScriptContext;
00047 class nsSupportsHashtable;
00048 class nsXBLPrototypeResources;
00049 class nsXBLPrototypeBinding;
00050 
00051 // *********************************************************************/
00052 // The XBLResourceLoader class
00053 
00054 MOZ_DECL_CTOR_COUNTER(nsXBLResource)
00055 
00056 struct nsXBLResource {
00057   nsXBLResource* mNext;
00058   nsIAtom* mType;
00059   nsString mSrc;
00060 
00061   nsXBLResource(nsIAtom* aType, const nsAString& aSrc) {
00062     MOZ_COUNT_CTOR(nsXBLResource);
00063     mNext = nsnull;
00064     mType = aType;
00065     mSrc = aSrc;
00066   }
00067 
00068   ~nsXBLResource() { 
00069     MOZ_COUNT_DTOR(nsXBLResource);  
00070     delete mNext; 
00071   }
00072 };
00073 
00074 class nsXBLResourceLoader : public nsICSSLoaderObserver
00075 {
00076 public:
00077   NS_DECL_ISUPPORTS
00078 
00079   // nsICSSLoaderObserver
00080   NS_IMETHOD StyleSheetLoaded(nsICSSStyleSheet* aSheet, PRBool aNotify);
00081 
00082   void LoadResources(PRBool* aResult);
00083   void AddResource(nsIAtom* aResourceType, const nsAString& aSrc);
00084   void AddResourceListener(nsIContent* aElement);
00085 
00086   nsXBLResourceLoader(nsXBLPrototypeBinding* aBinding,
00087                       nsXBLPrototypeResources* aResources);
00088   virtual ~nsXBLResourceLoader();
00089 
00090   void NotifyBoundElements();
00091 
00092 // MEMBER VARIABLES
00093   nsXBLPrototypeBinding* mBinding; // A pointer back to our binding.
00094   nsXBLPrototypeResources* mResources; // A pointer back to our resources
00095                                        // information.  May be null if the
00096                                        // resources have already been
00097                                        // destroyed.
00098   
00099   nsXBLResource* mResourceList; // The list of resources we need to load.
00100   nsXBLResource* mLastResource;
00101 
00102   PRPackedBool mLoadingResources;
00103   PRPackedBool mInLoadResourcesFunc;
00104   PRInt16 mPendingSheets; // The number of stylesheets that have yet to load.
00105   
00106   nsCOMPtr<nsISupportsArray> mBoundElements; // Bound elements that are waiting on the stylesheets and scripts.
00107 };
00108