LCOV - code coverage report
Current view: directory - uriloader/prefetch - nsPrefetchService.h (source / functions) Found Hit Coverage
Test: app.info Lines: 3 3 100.0 %
Date: 2012-06-02 Functions: 3 3 100.0 %

       1                 : /* ***** BEGIN LICENSE BLOCK *****
       2                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       3                 :  *
       4                 :  * The contents of this file are subject to the Mozilla Public License Version
       5                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       6                 :  * the License. You may obtain a copy of the License at
       7                 :  * http://www.mozilla.org/MPL/
       8                 :  *
       9                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      10                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      11                 :  * for the specific language governing rights and limitations under the
      12                 :  * License.
      13                 :  *
      14                 :  * The Original Code is Mozilla.
      15                 :  *
      16                 :  * The Initial Developer of the Original Code is
      17                 :  * Netscape Communications Corporation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2002
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Darin Fisher <darin@netscape.com> (original author)
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #ifndef nsPrefetchService_h__
      39                 : #define nsPrefetchService_h__
      40                 : 
      41                 : #include "nsCPrefetchService.h"
      42                 : #include "nsIObserver.h"
      43                 : #include "nsIInterfaceRequestor.h"
      44                 : #include "nsIChannelEventSink.h"
      45                 : #include "nsIWebProgressListener.h"
      46                 : #include "nsIStreamListener.h"
      47                 : #include "nsIChannel.h"
      48                 : #include "nsIURI.h"
      49                 : #include "nsIDOMDocument.h"
      50                 : #include "nsIDOMLoadStatus.h"
      51                 : #include "nsWeakReference.h"
      52                 : #include "nsCOMPtr.h"
      53                 : #include "nsAutoPtr.h"
      54                 : 
      55                 : class nsPrefetchService;
      56                 : class nsPrefetchListener;
      57                 : class nsPrefetchNode;
      58                 : 
      59                 : //-----------------------------------------------------------------------------
      60                 : // nsPrefetchService
      61                 : //-----------------------------------------------------------------------------
      62                 : 
      63                 : class nsPrefetchService : public nsIPrefetchService
      64                 :                         , public nsIWebProgressListener
      65                 :                         , public nsIObserver
      66                 :                         , public nsSupportsWeakReference
      67                 : {
      68                 : public:
      69                 :     NS_DECL_ISUPPORTS
      70                 :     NS_DECL_NSIPREFETCHSERVICE
      71                 :     NS_DECL_NSIWEBPROGRESSLISTENER
      72                 :     NS_DECL_NSIOBSERVER
      73                 : 
      74                 :     nsPrefetchService();
      75                 : 
      76                 :     nsresult Init();
      77                 :     void     ProcessNextURI();
      78                 : 
      79               3 :     nsPrefetchNode *GetCurrentNode() { return mCurrentNode.get(); }
      80               3 :     nsPrefetchNode *GetQueueHead() { return mQueueHead; }
      81                 : 
      82                 :     void NotifyLoadRequested(nsPrefetchNode *node);
      83                 :     void NotifyLoadCompleted(nsPrefetchNode *node);
      84                 : 
      85                 : private:
      86                 :     ~nsPrefetchService();
      87                 : 
      88                 :     nsresult Prefetch(nsIURI *aURI,
      89                 :                       nsIURI *aReferrerURI,
      90                 :                       nsIDOMNode *aSource,
      91                 :                       bool aExplicit);
      92                 : 
      93                 :     void     AddProgressListener();
      94                 :     void     RemoveProgressListener();
      95                 :     nsresult EnqueueURI(nsIURI *aURI, nsIURI *aReferrerURI,
      96                 :                         nsIDOMNode *aSource, nsPrefetchNode **node);
      97                 :     nsresult EnqueueNode(nsPrefetchNode *node);
      98                 :     nsresult DequeueNode(nsPrefetchNode **node);
      99                 :     void     EmptyQueue();
     100                 : 
     101                 :     void     StartPrefetching();
     102                 :     void     StopPrefetching();
     103                 : 
     104                 :     nsPrefetchNode                   *mQueueHead;
     105                 :     nsPrefetchNode                   *mQueueTail;
     106                 :     nsRefPtr<nsPrefetchNode>          mCurrentNode;
     107                 :     PRInt32                           mStopCount;
     108                 :     // true if pending document loads have ever reached zero.
     109                 :     PRInt32                           mHaveProcessed;
     110                 :     bool                              mDisabled;
     111                 : };
     112                 : 
     113                 : //-----------------------------------------------------------------------------
     114                 : // nsPrefetchNode
     115                 : //-----------------------------------------------------------------------------
     116                 : 
     117                 : class nsPrefetchNode : public nsIDOMLoadStatus
     118                 :                      , public nsIStreamListener
     119                 :                      , public nsIInterfaceRequestor
     120                 :                      , public nsIChannelEventSink
     121                 : {
     122                 : public:
     123                 :     NS_DECL_ISUPPORTS
     124                 :     NS_DECL_NSIDOMLOADSTATUS
     125                 :     NS_DECL_NSIREQUESTOBSERVER
     126                 :     NS_DECL_NSISTREAMLISTENER
     127                 :     NS_DECL_NSIINTERFACEREQUESTOR
     128                 :     NS_DECL_NSICHANNELEVENTSINK
     129                 : 
     130                 :     nsPrefetchNode(nsPrefetchService *aPrefetchService,
     131                 :                    nsIURI *aURI,
     132                 :                    nsIURI *aReferrerURI,
     133                 :                    nsIDOMNode *aSource);
     134                 : 
     135              10 :     ~nsPrefetchNode() {}
     136                 : 
     137                 :     nsresult OpenChannel();
     138                 :     nsresult CancelChannel(nsresult error);
     139                 : 
     140                 :     nsPrefetchNode             *mNext;
     141                 :     nsCOMPtr<nsIURI>            mURI;
     142                 :     nsCOMPtr<nsIURI>            mReferrerURI;
     143                 :     nsCOMPtr<nsIWeakReference>  mSource;
     144                 : 
     145                 : private:
     146                 :     nsRefPtr<nsPrefetchService> mService;
     147                 :     nsCOMPtr<nsIChannel>        mChannel;
     148                 :     PRUint16                    mState;
     149                 :     PRInt32                     mBytesRead;
     150                 : };
     151                 : 
     152                 : #endif // !nsPrefetchService_h__

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