LCOV - code coverage report
Current view: directory - content/xul/document/src - nsXULControllers.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 141 2 1.4 %
Date: 2012-06-02 Functions: 28 2 7.1 %

       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.org 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                 :  *   Mark Hammond <MarkH@ActiveState.com>
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      28                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : /*
      41                 : 
      42                 :   This file provides the implementation for the XUL "controllers"
      43                 :   object.
      44                 : 
      45                 : */
      46                 : 
      47                 : #include "nsString.h"
      48                 : 
      49                 : #include "nsIControllers.h"
      50                 : #include "nsIDOMElement.h"
      51                 : #include "nsXULControllers.h"
      52                 : #include "nsString.h"
      53                 : #include "nsContentUtils.h"
      54                 : 
      55                 : //----------------------------------------------------------------------
      56                 : 
      57               0 : nsXULControllers::nsXULControllers()
      58               0 : : mCurControllerID(0)
      59                 : {
      60               0 : }
      61                 : 
      62               0 : nsXULControllers::~nsXULControllers(void)
      63                 : {
      64               0 :   DeleteControllers();
      65               0 : }
      66                 : 
      67                 : void
      68               0 : nsXULControllers::DeleteControllers()
      69                 : {
      70               0 :   PRUint32 count = mControllers.Length();
      71               0 :   for (PRUint32 i = 0; i < count; i++)
      72                 :   {
      73               0 :     nsXULControllerData* controllerData = mControllers.ElementAt(i);
      74               0 :     delete controllerData;    // releases the nsIController
      75                 :   }
      76                 :   
      77               0 :   mControllers.Clear();
      78               0 : }
      79                 : 
      80                 : 
      81                 : nsresult
      82               0 : NS_NewXULControllers(nsISupports* aOuter, REFNSIID aIID, void** aResult)
      83                 : {
      84               0 :   NS_PRECONDITION(aOuter == nsnull, "no aggregation");
      85               0 :   if (aOuter)
      86               0 :     return NS_ERROR_NO_AGGREGATION;
      87                 : 
      88               0 :   nsXULControllers* controllers = new nsXULControllers();
      89               0 :   if (! controllers)
      90               0 :     return NS_ERROR_OUT_OF_MEMORY;
      91                 :   
      92                 :   nsresult rv;
      93               0 :   NS_ADDREF(controllers);
      94               0 :   rv = controllers->QueryInterface(aIID, aResult);
      95               0 :   NS_RELEASE(controllers);
      96               0 :   return rv;
      97                 : }
      98                 : 
      99            1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(nsXULControllers)
     100               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsXULControllers)
     101               0 :   tmp->DeleteControllers();
     102               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
     103               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsXULControllers)
     104                 :   {
     105               0 :     PRUint32 i, count = tmp->mControllers.Length();
     106               0 :     for (i = 0; i < count; ++i) {
     107               0 :       nsXULControllerData* controllerData = tmp->mControllers[i];
     108               0 :       if (controllerData) {
     109               0 :         cb.NoteXPCOMChild(controllerData->mController);
     110                 :       }
     111                 :     }
     112                 :   }
     113               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
     114                 : 
     115                 : DOMCI_DATA(XULControllers, nsXULControllers)
     116                 : 
     117               0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXULControllers)
     118               0 :   NS_INTERFACE_MAP_ENTRY(nsIControllers)
     119               0 :   NS_INTERFACE_MAP_ENTRY(nsISecurityCheckedComponent)
     120               0 :   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIControllers)
     121               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(XULControllers)
     122               0 : NS_INTERFACE_MAP_END
     123                 : 
     124               0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(nsXULControllers)
     125               0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(nsXULControllers)
     126                 : 
     127                 : NS_IMETHODIMP
     128               0 : nsXULControllers::GetControllerForCommand(const char *aCommand, nsIController** _retval)
     129                 : {
     130               0 :   NS_ENSURE_ARG_POINTER(_retval);
     131               0 :   *_retval = nsnull;
     132                 : 
     133               0 :   PRUint32 count = mControllers.Length();
     134               0 :   for (PRUint32 i=0; i < count; i++)
     135                 :   {
     136               0 :     nsXULControllerData* controllerData = mControllers.ElementAt(i);
     137               0 :     if (controllerData)
     138                 :     {
     139               0 :       nsCOMPtr<nsIController> controller;
     140               0 :       controllerData->GetController(getter_AddRefs(controller));
     141               0 :       if (controller)
     142                 :       {
     143                 :         bool supportsCommand;
     144               0 :         controller->SupportsCommand(aCommand, &supportsCommand);
     145               0 :         if (supportsCommand) {
     146               0 :           *_retval = controller;
     147               0 :           NS_ADDREF(*_retval);
     148               0 :           return NS_OK;
     149                 :         }
     150                 :       }
     151                 :     }
     152                 :   }
     153                 :   
     154               0 :   return NS_OK;
     155                 : }
     156                 : 
     157                 : NS_IMETHODIMP
     158               0 : nsXULControllers::InsertControllerAt(PRUint32 aIndex, nsIController *controller)
     159                 : {
     160               0 :   nsXULControllerData*  controllerData = new nsXULControllerData(++mCurControllerID, controller);
     161               0 :   if (!controllerData) return NS_ERROR_OUT_OF_MEMORY;
     162                 : #ifdef DEBUG
     163                 :   nsXULControllerData** inserted =
     164                 : #endif
     165               0 :   mControllers.InsertElementAt(aIndex, controllerData);
     166               0 :   NS_ASSERTION(inserted != nsnull, "Insertion of controller failed");
     167               0 :   return NS_OK;
     168                 : }
     169                 : 
     170                 : NS_IMETHODIMP
     171               0 : nsXULControllers::RemoveControllerAt(PRUint32 aIndex, nsIController **_retval)
     172                 : {
     173               0 :   NS_ENSURE_ARG_POINTER(_retval);
     174               0 :   *_retval = nsnull;
     175                 : 
     176               0 :   nsXULControllerData* controllerData = mControllers.SafeElementAt(aIndex);
     177               0 :   if (!controllerData) return NS_ERROR_FAILURE;
     178                 : 
     179               0 :   mControllers.RemoveElementAt(aIndex);
     180                 : 
     181               0 :   controllerData->GetController(_retval);
     182               0 :   delete controllerData;
     183                 :   
     184               0 :   return NS_OK;
     185                 : }
     186                 : 
     187                 : 
     188                 : NS_IMETHODIMP
     189               0 : nsXULControllers::GetControllerAt(PRUint32 aIndex, nsIController **_retval)
     190                 : {
     191               0 :   NS_ENSURE_ARG_POINTER(_retval);
     192               0 :   *_retval = nsnull;
     193                 : 
     194               0 :   nsXULControllerData* controllerData = mControllers.SafeElementAt(aIndex);
     195               0 :   if (!controllerData) return NS_ERROR_FAILURE;
     196                 : 
     197               0 :   return controllerData->GetController(_retval);   // does the addref  
     198                 : }
     199                 : 
     200                 : NS_IMETHODIMP
     201               0 : nsXULControllers::AppendController(nsIController *controller)
     202                 : {
     203                 :   // This assigns controller IDs starting at 1 so we can use 0 to test if an ID was obtained
     204               0 :   nsXULControllerData*  controllerData = new nsXULControllerData(++mCurControllerID, controller);
     205               0 :   if (!controllerData) return NS_ERROR_OUT_OF_MEMORY;
     206                 : 
     207                 : #ifdef DEBUG
     208                 :   nsXULControllerData** appended =
     209                 : #endif
     210               0 :   mControllers.AppendElement(controllerData);
     211               0 :   NS_ASSERTION(appended != nsnull, "Appending controller failed");
     212               0 :   return NS_OK;
     213                 : }
     214                 : 
     215                 : NS_IMETHODIMP
     216               0 : nsXULControllers::RemoveController(nsIController *controller)
     217                 : {
     218                 :   // first get the identity pointer
     219               0 :   nsCOMPtr<nsISupports> controllerSup(do_QueryInterface(controller));
     220                 :   // then find it
     221               0 :   PRUint32 count = mControllers.Length();
     222               0 :   for (PRUint32 i = 0; i < count; i++)
     223                 :   {
     224               0 :     nsXULControllerData* controllerData = mControllers.ElementAt(i);
     225               0 :     if (controllerData)
     226                 :     {
     227               0 :       nsCOMPtr<nsIController> thisController;
     228               0 :       controllerData->GetController(getter_AddRefs(thisController));
     229               0 :       nsCOMPtr<nsISupports> thisControllerSup(do_QueryInterface(thisController)); // get identity
     230               0 :       if (thisControllerSup == controllerSup)
     231                 :       {
     232               0 :         mControllers.RemoveElementAt(i);
     233               0 :         delete controllerData;
     234               0 :         return NS_OK;
     235                 :       }
     236                 :     }
     237                 :   }
     238               0 :   return NS_ERROR_FAILURE;      // right thing to return if no controller found?
     239                 : }
     240                 :     
     241                 : /* unsigned long getControllerId (in nsIController controller); */
     242                 : NS_IMETHODIMP
     243               0 : nsXULControllers::GetControllerId(nsIController *controller, PRUint32 *_retval)
     244                 : {
     245               0 :   NS_ENSURE_ARG_POINTER(_retval);
     246                 : 
     247               0 :   PRUint32 count = mControllers.Length();
     248               0 :   for (PRUint32 i = 0; i < count; i++)
     249                 :   {
     250               0 :     nsXULControllerData* controllerData = mControllers.ElementAt(i);
     251               0 :     if (controllerData)
     252                 :     {
     253               0 :       nsCOMPtr<nsIController> thisController;
     254               0 :       controllerData->GetController(getter_AddRefs(thisController));
     255               0 :       if (thisController.get() == controller)
     256                 :       {
     257               0 :         *_retval = controllerData->GetControllerID();
     258               0 :         return NS_OK;
     259                 :       }
     260                 :     }
     261                 :   }
     262               0 :   return NS_ERROR_FAILURE;  // none found
     263                 : }
     264                 : 
     265                 : /* nsIController getControllerById (in unsigned long controllerID); */
     266                 : NS_IMETHODIMP
     267               0 : nsXULControllers::GetControllerById(PRUint32 controllerID, nsIController **_retval)
     268                 : {
     269               0 :   NS_ENSURE_ARG_POINTER(_retval);
     270                 :     
     271               0 :   PRUint32 count = mControllers.Length();
     272               0 :   for (PRUint32 i = 0; i < count; i++)
     273                 :   {
     274               0 :     nsXULControllerData* controllerData = mControllers.ElementAt(i);
     275               0 :     if (controllerData && controllerData->GetControllerID() == controllerID)
     276                 :     {
     277               0 :       return controllerData->GetController(_retval);
     278                 :     }
     279                 :   }
     280               0 :   return NS_ERROR_FAILURE;  // none found
     281                 : }
     282                 : 
     283                 : NS_IMETHODIMP
     284               0 : nsXULControllers::GetControllerCount(PRUint32 *_retval)
     285                 : {
     286               0 :   NS_ENSURE_ARG_POINTER(_retval);
     287               0 :   *_retval = mControllers.Length();
     288               0 :   return NS_OK;
     289                 : }
     290                 : 
     291                 : // nsISecurityCheckedComponent implementation
     292                 : 
     293               0 : static char* cloneAllAccess()
     294                 : {
     295                 :   static const char allAccess[] = "AllAccess";
     296               0 :   return (char*)nsMemory::Clone(allAccess, sizeof(allAccess));
     297                 : }
     298                 : 
     299               0 : static char* cloneUniversalXPConnect()
     300                 : {
     301                 :   static const char universalXPConnect[] = "UniversalXPConnect";
     302               0 :   return (char*)nsMemory::Clone(universalXPConnect, sizeof(universalXPConnect));
     303                 : }
     304                 : 
     305                 : NS_IMETHODIMP
     306               0 : nsXULControllers::CanCreateWrapper(const nsIID * iid, char **_retval)
     307                 : {
     308               0 :   *_retval = cloneAllAccess();
     309               0 :   return *_retval ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
     310                 : }
     311                 : 
     312                 : NS_IMETHODIMP
     313               0 : nsXULControllers::CanCallMethod(const nsIID * iid, const PRUnichar *methodName,
     314                 :                                 char **_retval)
     315                 : {
     316                 :   // OK if you're cool enough
     317               0 :   *_retval = cloneUniversalXPConnect();
     318               0 :   return *_retval ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
     319                 : }
     320                 : 
     321                 : NS_IMETHODIMP
     322               0 : nsXULControllers::CanGetProperty(const nsIID * iid,
     323                 :                                  const PRUnichar *propertyName,
     324                 :                                  char **_retval)
     325                 : {
     326                 :   // OK if you're cool enough
     327               0 :   *_retval = cloneUniversalXPConnect();
     328               0 :   return *_retval ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
     329                 : }
     330                 : 
     331                 : 
     332                 : NS_IMETHODIMP
     333               0 : nsXULControllers::CanSetProperty(const nsIID * iid,
     334                 :                                  const PRUnichar *propertyName,
     335                 :                                  char **_retval)
     336                 : {
     337                 :   // OK if you're cool enough
     338               0 :   *_retval = cloneUniversalXPConnect();
     339               0 :   return *_retval ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
     340            4392 : }

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