LCOV - code coverage report
Current view: directory - content/xtf/src - nsXTFInterfaceAggregator.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 45 40 88.9 %
Date: 2012-06-02 Functions: 7 7 100.0 %

       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 the Mozilla XTF project.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Alex Fritze.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2004
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Alex Fritze <alex@croczilla.com> (original author)
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsCOMPtr.h"
      40                 : #include "nsXPTCUtils.h"
      41                 : #include "nsIInterfaceInfo.h"
      42                 : #include "nsIInterfaceInfoManager.h"
      43                 : #include "nsServiceManagerUtils.h"
      44                 : #include "nsAutoPtr.h"
      45                 : #ifdef DEBUG
      46                 : #include <stdio.h>
      47                 : #endif
      48                 : 
      49                 : ////////////////////////////////////////////////////////////////////////
      50                 : // nsXTFInterfaceAggregator class
      51                 : 
      52                 : class nsXTFInterfaceAggregator : protected nsAutoXPTCStub
      53                 : {
      54                 : protected:
      55                 :   friend nsresult
      56                 :   NS_NewXTFInterfaceAggregator(const nsIID& iid,
      57                 :                                nsISupports* inner,
      58                 :                                nsISupports* outer,
      59                 :                                void** result);
      60                 : 
      61                 :   nsXTFInterfaceAggregator(const nsIID& iid,
      62                 :                            nsISupports* inner,
      63                 :                            nsISupports* outer,
      64                 :                            nsresult *rv);
      65                 :   ~nsXTFInterfaceAggregator();
      66                 :   
      67                 : public:
      68                 :   // nsISupports interface
      69                 :   NS_DECL_ISUPPORTS
      70                 :   
      71                 :   NS_IMETHOD CallMethod(PRUint16 methodIndex,
      72                 :                         const XPTMethodDescriptor* info,
      73                 :                         nsXPTCMiniVariant* params);
      74                 : 
      75                 : private:
      76                 :   nsISupports *mInner;
      77                 :   nsISupports *mOuter;
      78                 :   nsIID mIID;
      79                 : };
      80                 : 
      81                 : //----------------------------------------------------------------------
      82                 : // implementation:
      83                 : 
      84               2 : nsXTFInterfaceAggregator::nsXTFInterfaceAggregator(const nsIID& iid,
      85                 :                                                    nsISupports* inner,
      86                 :                                                    nsISupports* outer,
      87                 :                                                    nsresult *rv)
      88               2 :   : mInner(inner), mOuter(outer), mIID(iid)
      89                 : {
      90                 : #ifdef DEBUG
      91                 : //  printf("nsXTFInterfaceAggregator CTOR\n");
      92                 : #endif
      93               2 :   mInner->AddRef();
      94               2 :   mOuter->AddRef();
      95                 : 
      96               2 :   *rv = InitStub(iid);
      97               2 : }
      98                 : 
      99               4 : nsXTFInterfaceAggregator::~nsXTFInterfaceAggregator()
     100                 : {
     101                 : #ifdef DEBUG
     102                 : //  printf("nsXTFInterfaceAggregator DTOR\n");
     103                 : #endif
     104               2 :   mInner->Release();
     105               2 :   mOuter->Release();
     106               2 : }
     107                 : 
     108                 : nsresult
     109               2 : NS_NewXTFInterfaceAggregator(const nsIID& iid,
     110                 :                              nsISupports* inner,
     111                 :                              nsISupports* outer,
     112                 :                              void** aResult){
     113               2 :   NS_PRECONDITION(aResult != nsnull, "null ptr");
     114               2 :   if (!aResult)
     115               0 :     return NS_ERROR_NULL_POINTER;
     116                 : 
     117                 :   nsresult rv;
     118                 : 
     119                 :   nsRefPtr<nsXTFInterfaceAggregator> result =
     120               4 :     new nsXTFInterfaceAggregator(iid, inner, outer, &rv);
     121               2 :   if (!result)
     122               0 :     return NS_ERROR_OUT_OF_MEMORY;
     123                 : 
     124               2 :   if (NS_FAILED(rv))
     125               0 :     return rv;
     126                 : 
     127               2 :   return result->QueryInterface(iid, aResult);
     128                 : }
     129                 : 
     130                 : //----------------------------------------------------------------------
     131                 : // nsISupports implementation
     132                 : 
     133               4 : NS_IMPL_ADDREF(nsXTFInterfaceAggregator)
     134               6 : NS_IMPL_RELEASE(nsXTFInterfaceAggregator)
     135                 : 
     136                 : NS_IMETHODIMP
     137               4 : nsXTFInterfaceAggregator::QueryInterface(REFNSIID aIID, void** aInstancePtr)
     138                 : {
     139               4 :   NS_PRECONDITION(aInstancePtr, "null out param");
     140                 : 
     141               4 :   if (aIID.Equals(mIID)) {
     142               2 :     *aInstancePtr = mXPTCStub;
     143               2 :     NS_ADDREF_THIS();
     144               2 :     return NS_OK;
     145                 :   }
     146                 : 
     147               2 :   return mOuter->QueryInterface(aIID, aInstancePtr);
     148                 : }
     149                 : 
     150                 : //----------------------------------------------------------------------
     151                 : // nsXPTCStubBase implementation
     152                 : 
     153                 : NS_IMETHODIMP
     154               3 : nsXTFInterfaceAggregator::CallMethod(PRUint16 methodIndex,
     155                 :                                      const XPTMethodDescriptor *info,
     156                 :                                      nsXPTCMiniVariant* params)
     157                 : {
     158               3 :   NS_ASSERTION(methodIndex >= 3,
     159                 :                "huh? indirect nsISupports method call unexpected");
     160                 : 
     161                 :   // prepare args:
     162               3 :   int paramCount = info->num_args;
     163                 :   nsXPTCVariant* fullPars;
     164               3 :   if (!paramCount) {
     165               0 :     fullPars = nsnull;
     166                 :   }
     167                 :   else {
     168               6 :     fullPars = new nsXPTCVariant[paramCount];
     169               3 :     if (!fullPars)
     170               0 :       return NS_ERROR_OUT_OF_MEMORY;
     171                 :   }
     172                 : 
     173               6 :   for (int i=0; i<paramCount; ++i) {
     174               3 :     const nsXPTParamInfo& paramInfo = info->params[i];
     175               3 :     PRUint8 flags = paramInfo.IsOut() ? nsXPTCVariant::PTR_IS_DATA : 0;
     176               3 :     fullPars[i].Init(params[i], paramInfo.GetType(), flags);
     177                 :   }
     178                 :   
     179                 :   // make the call:
     180                 :   nsresult rv = NS_InvokeByIndex(mInner,
     181                 :                                  methodIndex,
     182                 :                                  paramCount,
     183               3 :                                  fullPars);
     184               3 :   if (fullPars)
     185               3 :     delete []fullPars;
     186               3 :   return rv;
     187                 : }

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