LCOV - code coverage report
Current view: top level - widget - nsTransferable.cpp (source / functions) Hit Total Coverage
Test: output.info Lines: 0 271 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 31 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : /*
       7             : Notes to self:
       8             : 
       9             : - at some point, strings will be accessible from JS, so we won't have to wrap
      10             :    flavors in an nsISupportsCString. Until then, we're kinda stuck with
      11             :    this crappy API of nsIArrays.
      12             : 
      13             : */
      14             : 
      15             : 
      16             : #include "nsTransferable.h"
      17             : #include "nsArray.h"
      18             : #include "nsArrayUtils.h"
      19             : #include "nsString.h"
      20             : #include "nsReadableUtils.h"
      21             : #include "nsTArray.h"
      22             : #include "nsIFormatConverter.h"
      23             : #include "nsIContentPolicy.h"
      24             : #include "nsIComponentManager.h"
      25             : #include "nsCOMPtr.h"
      26             : #include "nsXPCOM.h"
      27             : #include "nsISupportsPrimitives.h"
      28             : #include "nsMemory.h"
      29             : #include "nsPrimitiveHelpers.h"
      30             : #include "nsXPIDLString.h"
      31             : #include "nsDirectoryServiceDefs.h"
      32             : #include "nsDirectoryService.h"
      33             : #include "nsCRT.h"
      34             : #include "nsNetUtil.h"
      35             : #include "nsIDOMNode.h"
      36             : #include "nsIOutputStream.h"
      37             : #include "nsIInputStream.h"
      38             : #include "nsIWeakReferenceUtils.h"
      39             : #include "nsIFile.h"
      40             : #include "nsILoadContext.h"
      41             : #include "mozilla/UniquePtr.h"
      42             : 
      43           0 : NS_IMPL_ISUPPORTS(nsTransferable, nsITransferable)
      44             : 
      45           0 : size_t GetDataForFlavor (const nsTArray<DataStruct>& aArray,
      46             :                            const char* aDataFlavor)
      47             : {
      48           0 :   for (size_t i = 0 ; i < aArray.Length () ; ++i) {
      49           0 :     if (aArray[i].GetFlavor().Equals (aDataFlavor))
      50           0 :       return i;
      51             :   }
      52             : 
      53           0 :   return aArray.NoIndex;
      54             : }
      55             : 
      56             : //-------------------------------------------------------------------------
      57           0 : DataStruct::~DataStruct()
      58             : {
      59           0 :   if (mCacheFileName) free(mCacheFileName);
      60           0 : }
      61             : 
      62             : //-------------------------------------------------------------------------
      63             : void
      64           0 : DataStruct::SetData ( nsISupports* aData, uint32_t aDataLen, bool aIsPrivateData )
      65             : {
      66             :   // Now, check to see if we consider the data to be "too large"
      67             :   // as well as ensuring that private browsing mode is disabled
      68           0 :   if (aDataLen > kLargeDatasetSize && !aIsPrivateData) {
      69             :     // if so, cache it to disk instead of memory
      70           0 :     if ( NS_SUCCEEDED(WriteCache(aData, aDataLen)) )
      71           0 :       return;
      72             :     else
      73           0 :                         NS_WARNING("Oh no, couldn't write data to the cache file");
      74             :   }
      75             : 
      76           0 :   mData    = aData;
      77           0 :   mDataLen = aDataLen;
      78             : }
      79             : 
      80             : 
      81             : //-------------------------------------------------------------------------
      82             : void
      83           0 : DataStruct::GetData ( nsISupports** aData, uint32_t *aDataLen )
      84             : {
      85             :   // check here to see if the data is cached on disk
      86           0 :   if ( !mData && mCacheFileName ) {
      87             :     // if so, read it in and pass it back
      88             :     // ReadCache creates memory and copies the data into it.
      89           0 :     if ( NS_SUCCEEDED(ReadCache(aData, aDataLen)) )
      90           0 :       return;
      91             :     else {
      92             :       // oh shit, something went horribly wrong here.
      93           0 :       NS_WARNING("Oh no, couldn't read data in from the cache file");
      94           0 :       *aData = nullptr;
      95           0 :       *aDataLen = 0;
      96           0 :       return;
      97             :     }
      98             :   }
      99             : 
     100           0 :   *aData = mData;
     101           0 :   if ( mData )
     102           0 :     NS_ADDREF(*aData);
     103           0 :   *aDataLen = mDataLen;
     104             : }
     105             : 
     106             : 
     107             : //-------------------------------------------------------------------------
     108             : already_AddRefed<nsIFile>
     109           0 : DataStruct::GetFileSpec(const char* aFileName)
     110             : {
     111           0 :   nsCOMPtr<nsIFile> cacheFile;
     112           0 :   NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(cacheFile));
     113             : 
     114           0 :   if (!cacheFile)
     115           0 :     return nullptr;
     116             : 
     117             :   // if the param aFileName contains a name we should use that
     118             :   // because the file probably already exists
     119             :   // otherwise create a unique name
     120           0 :   if (!aFileName) {
     121           0 :     cacheFile->AppendNative(NS_LITERAL_CSTRING("clipboardcache"));
     122           0 :     nsresult rv = cacheFile->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600);
     123           0 :     if (NS_FAILED(rv))
     124           0 :       return nullptr;
     125             :   } else {
     126           0 :     cacheFile->AppendNative(nsDependentCString(aFileName));
     127             :   }
     128             : 
     129           0 :   return cacheFile.forget();
     130             : }
     131             : 
     132             : 
     133             : //-------------------------------------------------------------------------
     134             : nsresult
     135           0 : DataStruct::WriteCache(nsISupports* aData, uint32_t aDataLen)
     136             : {
     137             :   // Get a new path and file to the temp directory
     138           0 :   nsCOMPtr<nsIFile> cacheFile = GetFileSpec(mCacheFileName);
     139           0 :   if (cacheFile) {
     140             :     // remember the file name
     141           0 :     if (!mCacheFileName) {
     142           0 :       nsXPIDLCString fName;
     143           0 :       cacheFile->GetNativeLeafName(fName);
     144           0 :       mCacheFileName = strdup(fName);
     145             :     }
     146             : 
     147             :     // write out the contents of the clipboard
     148             :     // to the file
     149             :     //uint32_t bytes;
     150           0 :     nsCOMPtr<nsIOutputStream> outStr;
     151             : 
     152           0 :     NS_NewLocalFileOutputStream(getter_AddRefs(outStr),
     153           0 :                                 cacheFile);
     154             : 
     155           0 :     if (!outStr) return NS_ERROR_FAILURE;
     156             : 
     157           0 :     void* buff = nullptr;
     158           0 :     nsPrimitiveHelpers::CreateDataFromPrimitive ( mFlavor.get(), aData, &buff, aDataLen );
     159           0 :     if ( buff ) {
     160             :       uint32_t ignored;
     161           0 :       outStr->Write(reinterpret_cast<char*>(buff), aDataLen, &ignored);
     162           0 :       free(buff);
     163           0 :       return NS_OK;
     164             :     }
     165             :   }
     166           0 :   return NS_ERROR_FAILURE;
     167             : }
     168             : 
     169             : 
     170             : //-------------------------------------------------------------------------
     171             : nsresult
     172           0 : DataStruct::ReadCache(nsISupports** aData, uint32_t* aDataLen)
     173             : {
     174             :   // if we don't have a cache filename we are out of luck
     175           0 :   if (!mCacheFileName)
     176           0 :     return NS_ERROR_FAILURE;
     177             : 
     178             :   // get the path and file name
     179           0 :   nsCOMPtr<nsIFile> cacheFile = GetFileSpec(mCacheFileName);
     180             :   bool exists;
     181           0 :   if ( cacheFile && NS_SUCCEEDED(cacheFile->Exists(&exists)) && exists ) {
     182             :     // get the size of the file
     183             :     int64_t fileSize;
     184           0 :     int64_t max32 = 0xFFFFFFFF;
     185           0 :     cacheFile->GetFileSize(&fileSize);
     186           0 :     if (fileSize > max32)
     187           0 :       return NS_ERROR_OUT_OF_MEMORY;
     188             : 
     189           0 :     uint32_t size = uint32_t(fileSize);
     190             :     // create new memory for the large clipboard data
     191           0 :     auto data = mozilla::MakeUnique<char[]>(size);
     192           0 :     if ( !data )
     193           0 :       return NS_ERROR_OUT_OF_MEMORY;
     194             : 
     195             :     // now read it all in
     196           0 :     nsCOMPtr<nsIInputStream> inStr;
     197           0 :     NS_NewLocalFileInputStream( getter_AddRefs(inStr),
     198           0 :                                 cacheFile);
     199             : 
     200           0 :     if (!cacheFile) return NS_ERROR_FAILURE;
     201             : 
     202           0 :     nsresult rv = inStr->Read(data.get(), fileSize, aDataLen);
     203             : 
     204             :     // make sure we got all the data ok
     205           0 :     if (NS_SUCCEEDED(rv) && *aDataLen == size) {
     206           0 :       nsPrimitiveHelpers::CreatePrimitiveForData(mFlavor.get(), data.get(),
     207           0 :                                                  fileSize, aData);
     208           0 :       return *aData ? NS_OK : NS_ERROR_FAILURE;
     209             :     }
     210             : 
     211             :     // zero the return params
     212           0 :     *aData    = nullptr;
     213           0 :     *aDataLen = 0;
     214             :   }
     215             : 
     216           0 :   return NS_ERROR_FAILURE;
     217             : }
     218             : 
     219             : 
     220             : //-------------------------------------------------------------------------
     221             : //
     222             : // Transferable constructor
     223             : //
     224             : //-------------------------------------------------------------------------
     225           0 : nsTransferable::nsTransferable()
     226             :   : mPrivateData(false)
     227             :   , mContentPolicyType(nsIContentPolicy::TYPE_OTHER)
     228             : #ifdef DEBUG
     229           0 :   , mInitialized(false)
     230             : #endif
     231             : {
     232           0 : }
     233             : 
     234             : //-------------------------------------------------------------------------
     235             : //
     236             : // Transferable destructor
     237             : //
     238             : //-------------------------------------------------------------------------
     239           0 : nsTransferable::~nsTransferable()
     240             : {
     241           0 : }
     242             : 
     243             : 
     244             : NS_IMETHODIMP
     245           0 : nsTransferable::Init(nsILoadContext* aContext)
     246             : {
     247           0 :   MOZ_ASSERT(!mInitialized);
     248             : 
     249           0 :   if (aContext) {
     250           0 :     mPrivateData = aContext->UsePrivateBrowsing();
     251             :   }
     252             : #ifdef DEBUG
     253           0 :   mInitialized = true;
     254             : #endif
     255           0 :   return NS_OK;
     256             : }
     257             : 
     258             : //
     259             : // GetTransferDataFlavors
     260             : //
     261             : // Returns a copy of the internal list of flavors. This does NOT take into
     262             : // account any converter that may be registered. This list consists of
     263             : // nsISupportsCString objects so that the flavor list can be accessed from JS.
     264             : //
     265             : already_AddRefed<nsIMutableArray>
     266           0 : nsTransferable::GetTransferDataFlavors()
     267             : {
     268           0 :   MOZ_ASSERT(mInitialized);
     269             : 
     270           0 :   nsCOMPtr<nsIMutableArray> array = nsArray::Create();
     271             : 
     272           0 :   for (size_t i = 0; i < mDataArray.Length(); ++i) {
     273           0 :     DataStruct& data = mDataArray.ElementAt(i);
     274           0 :     nsCOMPtr<nsISupportsCString> flavorWrapper = do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID);
     275           0 :     if ( flavorWrapper ) {
     276           0 :       flavorWrapper->SetData ( data.GetFlavor() );
     277           0 :       nsCOMPtr<nsISupports> genericWrapper ( do_QueryInterface(flavorWrapper) );
     278           0 :       array->AppendElement( genericWrapper, /*weak =*/ false );
     279             :     }
     280             :   }
     281             : 
     282           0 :   return array.forget();
     283             : }
     284             : 
     285             : 
     286             : //
     287             : // GetTransferData
     288             : //
     289             : // Returns the data of the requested flavor, obtained from either having the data on hand or
     290             : // using a converter to get it. The data is wrapped in a nsISupports primitive so that it is
     291             : // accessible from JS.
     292             : //
     293             : NS_IMETHODIMP
     294           0 : nsTransferable::GetTransferData(const char *aFlavor, nsISupports **aData, uint32_t *aDataLen)
     295             : {
     296           0 :   MOZ_ASSERT(mInitialized);
     297             : 
     298           0 :   NS_ENSURE_ARG_POINTER(aFlavor && aData && aDataLen);
     299             : 
     300           0 :   nsresult rv = NS_OK;
     301           0 :   nsCOMPtr<nsISupports> savedData;
     302             : 
     303             :   // first look and see if the data is present in one of the intrinsic flavors
     304           0 :   for (size_t i = 0; i < mDataArray.Length(); ++i) {
     305           0 :     DataStruct& data = mDataArray.ElementAt(i);
     306           0 :     if ( data.GetFlavor().Equals(aFlavor) ) {
     307           0 :       nsCOMPtr<nsISupports> dataBytes;
     308             :       uint32_t len;
     309           0 :       data.GetData(getter_AddRefs(dataBytes), &len);
     310           0 :       if (len == kFlavorHasDataProvider && dataBytes) {
     311             :         // do we have a data provider?
     312           0 :         nsCOMPtr<nsIFlavorDataProvider> dataProvider = do_QueryInterface(dataBytes);
     313           0 :         if (dataProvider) {
     314           0 :           rv = dataProvider->GetFlavorData(this, aFlavor,
     315           0 :                                            getter_AddRefs(dataBytes), &len);
     316           0 :           if (NS_FAILED(rv))
     317           0 :             break;    // the provider failed. fall into the converter code below.
     318             :         }
     319             :       }
     320           0 :       if (dataBytes && len > 0) { // XXXmats why is zero length not ok?
     321           0 :         *aDataLen = len;
     322           0 :         dataBytes.forget(aData);
     323           0 :         return NS_OK;
     324             :       }
     325           0 :       savedData = dataBytes;  // return this if format converter fails
     326           0 :       break;
     327             :     }
     328             :   }
     329             : 
     330           0 :   bool found = false;
     331             : 
     332             :   // if not, try using a format converter to get the requested flavor
     333           0 :   if ( mFormatConv ) {
     334           0 :     for (size_t i = 0; i < mDataArray.Length(); ++i) {
     335           0 :       DataStruct& data = mDataArray.ElementAt(i);
     336           0 :       bool canConvert = false;
     337           0 :       mFormatConv->CanConvert(data.GetFlavor().get(), aFlavor, &canConvert);
     338           0 :       if ( canConvert ) {
     339           0 :         nsCOMPtr<nsISupports> dataBytes;
     340             :         uint32_t len;
     341           0 :         data.GetData(getter_AddRefs(dataBytes), &len);
     342           0 :         if (len == kFlavorHasDataProvider && dataBytes) {
     343             :           // do we have a data provider?
     344           0 :           nsCOMPtr<nsIFlavorDataProvider> dataProvider = do_QueryInterface(dataBytes);
     345           0 :           if (dataProvider) {
     346           0 :             rv = dataProvider->GetFlavorData(this, aFlavor,
     347           0 :                                              getter_AddRefs(dataBytes), &len);
     348           0 :             if (NS_FAILED(rv))
     349           0 :               break;  // give up
     350             :           }
     351             :         }
     352           0 :         mFormatConv->Convert(data.GetFlavor().get(), dataBytes, len, aFlavor, aData, aDataLen);
     353           0 :         found = true;
     354           0 :         break;
     355             :       }
     356             :     }
     357             :   }
     358             : 
     359             :   // for backward compatibility
     360           0 :   if (!found) {
     361           0 :     savedData.forget(aData);
     362           0 :     *aDataLen = 0;
     363             :   }
     364             : 
     365           0 :   return found ? NS_OK : NS_ERROR_FAILURE;
     366             : }
     367             : 
     368             : 
     369             : //
     370             : // GetAnyTransferData
     371             : //
     372             : // Returns the data of the first flavor found. Caller is responsible for deleting the
     373             : // flavor string.
     374             : //
     375             : NS_IMETHODIMP
     376           0 : nsTransferable::GetAnyTransferData(nsACString& aFlavor, nsISupports **aData,
     377             :                                    uint32_t *aDataLen)
     378             : {
     379           0 :   MOZ_ASSERT(mInitialized);
     380             : 
     381           0 :   NS_ENSURE_ARG_POINTER(aData && aDataLen);
     382             : 
     383           0 :   for (size_t i = 0; i < mDataArray.Length(); ++i) {
     384           0 :     DataStruct& data = mDataArray.ElementAt(i);
     385           0 :     if (data.IsDataAvailable()) {
     386           0 :       aFlavor.Assign(data.GetFlavor());
     387           0 :       data.GetData(aData, aDataLen);
     388           0 :       return NS_OK;
     389             :     }
     390             :   }
     391             : 
     392           0 :   return NS_ERROR_FAILURE;
     393             : }
     394             : 
     395             : 
     396             : //
     397             : // SetTransferData
     398             : //
     399             : //
     400             : //
     401             : NS_IMETHODIMP
     402           0 : nsTransferable::SetTransferData(const char *aFlavor, nsISupports *aData, uint32_t aDataLen)
     403             : {
     404           0 :   MOZ_ASSERT(mInitialized);
     405             : 
     406           0 :   NS_ENSURE_ARG(aFlavor);
     407             : 
     408             :   // first check our intrinsic flavors to see if one has been registered.
     409           0 :   for (size_t i = 0; i < mDataArray.Length(); ++i) {
     410           0 :     DataStruct& data = mDataArray.ElementAt(i);
     411           0 :     if ( data.GetFlavor().Equals(aFlavor) ) {
     412           0 :       data.SetData ( aData, aDataLen, mPrivateData );
     413           0 :       return NS_OK;
     414             :     }
     415             :   }
     416             : 
     417             :   // if not, try using a format converter to find a flavor to put the data in
     418           0 :   if ( mFormatConv ) {
     419           0 :     for (size_t i = 0; i < mDataArray.Length(); ++i) {
     420           0 :       DataStruct& data = mDataArray.ElementAt(i);
     421           0 :       bool canConvert = false;
     422           0 :       mFormatConv->CanConvert(aFlavor, data.GetFlavor().get(), &canConvert);
     423             : 
     424           0 :       if ( canConvert ) {
     425           0 :         nsCOMPtr<nsISupports> ConvertedData;
     426             :         uint32_t ConvertedLen;
     427           0 :         mFormatConv->Convert(aFlavor, aData, aDataLen, data.GetFlavor().get(), getter_AddRefs(ConvertedData), &ConvertedLen);
     428           0 :         data.SetData(ConvertedData, ConvertedLen, mPrivateData);
     429           0 :         return NS_OK;
     430             :       }
     431             :     }
     432             :   }
     433             : 
     434             :   // Can't set data neither directly nor through converter. Just add this flavor and try again
     435           0 :   nsresult result = NS_ERROR_FAILURE;
     436           0 :   if ( NS_SUCCEEDED(AddDataFlavor(aFlavor)) )
     437           0 :     result = SetTransferData (aFlavor, aData, aDataLen);
     438             : 
     439           0 :   return result;
     440             : }
     441             : 
     442             : 
     443             : //
     444             : // AddDataFlavor
     445             : //
     446             : // Adds a data flavor to our list with no data. Error if it already exists.
     447             : //
     448             : NS_IMETHODIMP
     449           0 : nsTransferable::AddDataFlavor(const char *aDataFlavor)
     450             : {
     451           0 :   MOZ_ASSERT(mInitialized);
     452             : 
     453           0 :   if (GetDataForFlavor (mDataArray, aDataFlavor) != mDataArray.NoIndex)
     454           0 :     return NS_ERROR_FAILURE;
     455             : 
     456             :   // Create a new "slot" for the data
     457           0 :   mDataArray.AppendElement(DataStruct ( aDataFlavor ));
     458             : 
     459           0 :   return NS_OK;
     460             : }
     461             : 
     462             : 
     463             : //
     464             : // RemoveDataFlavor
     465             : //
     466             : // Removes a data flavor (and causes the data to be destroyed). Error if
     467             : // the requested flavor is not present.
     468             : //
     469             : NS_IMETHODIMP
     470           0 : nsTransferable::RemoveDataFlavor(const char *aDataFlavor)
     471             : {
     472           0 :   MOZ_ASSERT(mInitialized);
     473             : 
     474           0 :   size_t idx = GetDataForFlavor(mDataArray, aDataFlavor);
     475           0 :   if (idx != mDataArray.NoIndex) {
     476           0 :     mDataArray.RemoveElementAt (idx);
     477           0 :     return NS_OK;
     478             :   }
     479           0 :   return NS_ERROR_FAILURE;
     480             : }
     481             : 
     482             : 
     483             : /**
     484             :   *
     485             :   *
     486             :   */
     487             : NS_IMETHODIMP
     488           0 : nsTransferable::IsLargeDataSet(bool *_retval)
     489             : {
     490           0 :   MOZ_ASSERT(mInitialized);
     491             : 
     492           0 :   NS_ENSURE_ARG_POINTER(_retval);
     493           0 :   *_retval = false;
     494           0 :   return NS_OK;
     495             : }
     496             : 
     497             : 
     498             : /**
     499             :   *
     500             :   *
     501             :   */
     502           0 : NS_IMETHODIMP nsTransferable::SetConverter(nsIFormatConverter * aConverter)
     503             : {
     504           0 :   MOZ_ASSERT(mInitialized);
     505             : 
     506           0 :   mFormatConv = aConverter;
     507           0 :   return NS_OK;
     508             : }
     509             : 
     510             : 
     511             : /**
     512             :   *
     513             :   *
     514             :   */
     515           0 : NS_IMETHODIMP nsTransferable::GetConverter(nsIFormatConverter * *aConverter)
     516             : {
     517           0 :   MOZ_ASSERT(mInitialized);
     518             : 
     519           0 :   NS_ENSURE_ARG_POINTER(aConverter);
     520           0 :   *aConverter = mFormatConv;
     521           0 :   NS_IF_ADDREF(*aConverter);
     522           0 :   return NS_OK;
     523             : }
     524             : 
     525             : 
     526             : //
     527             : // FlavorsTransferableCanImport
     528             : //
     529             : // Computes a list of flavors that the transferable can accept into it, either through
     530             : // intrinsic knowledge or input data converters.
     531             : //
     532             : NS_IMETHODIMP
     533           0 : nsTransferable::FlavorsTransferableCanImport(nsIArray **_retval)
     534             : {
     535           0 :   MOZ_ASSERT(mInitialized);
     536             : 
     537           0 :   NS_ENSURE_ARG_POINTER(_retval);
     538             : 
     539             :   // Get the flavor list, and on to the end of it, append the list of flavors we
     540             :   // can also get to through a converter. This is so that we can just walk the list
     541             :   // in one go, looking for the desired flavor.
     542           0 :   nsCOMPtr<nsIMutableArray> array = GetTransferDataFlavors();
     543           0 :   nsCOMPtr<nsIFormatConverter> converter;
     544           0 :   GetConverter(getter_AddRefs(converter));
     545           0 :   if ( converter ) {
     546           0 :     nsCOMPtr<nsIArray> convertedList;
     547           0 :     converter->GetInputDataFlavors(getter_AddRefs(convertedList));
     548             : 
     549           0 :     if ( convertedList ) {
     550             :       uint32_t importListLen;
     551           0 :       convertedList->GetLength(&importListLen);
     552             : 
     553           0 :       for (uint32_t i = 0; i < importListLen; ++i ) {
     554             :         nsCOMPtr<nsISupportsCString> flavorWrapper =
     555           0 :             do_QueryElementAt(convertedList, i);
     556           0 :         nsAutoCString flavorStr;
     557           0 :         flavorWrapper->GetData( flavorStr );
     558             : 
     559           0 :         if (GetDataForFlavor (mDataArray, flavorStr.get())
     560             :             == mDataArray.NoIndex) // Don't append if already in intrinsic list
     561           0 :           array->AppendElement (flavorWrapper, /*weak =*/ false);
     562             :       } // foreach flavor that can be converted to
     563             :     }
     564             :   } // if a converter exists
     565             : 
     566           0 :   array.forget(_retval);
     567           0 :   return NS_OK;
     568             : } // FlavorsTransferableCanImport
     569             : 
     570             : 
     571             : //
     572             : // FlavorsTransferableCanExport
     573             : //
     574             : // Computes a list of flavors that the transferable can export, either through
     575             : // intrinsic knowledge or output data converters.
     576             : //
     577             : NS_IMETHODIMP
     578           0 : nsTransferable::FlavorsTransferableCanExport(nsIArray **_retval)
     579             : {
     580           0 :   MOZ_ASSERT(mInitialized);
     581             : 
     582           0 :   NS_ENSURE_ARG_POINTER(_retval);
     583             : 
     584             :   // Get the flavor list, and on to the end of it, append the list of flavors we
     585             :   // can also get to through a converter. This is so that we can just walk the list
     586             :   // in one go, looking for the desired flavor.
     587           0 :   nsCOMPtr<nsIMutableArray> array = GetTransferDataFlavors();
     588           0 :   nsCOMPtr<nsIFormatConverter> converter;
     589           0 :   GetConverter(getter_AddRefs(converter));
     590           0 :   if ( converter ) {
     591           0 :     nsCOMPtr<nsIArray> convertedList;
     592           0 :     converter->GetOutputDataFlavors(getter_AddRefs(convertedList));
     593             : 
     594           0 :     if ( convertedList ) {
     595             :       uint32_t importListLen;
     596           0 :       convertedList->GetLength(&importListLen);
     597             : 
     598           0 :       for ( uint32_t i=0; i < importListLen; ++i ) {
     599             :         nsCOMPtr<nsISupportsCString> flavorWrapper =
     600           0 :             do_QueryElementAt(convertedList, i);
     601           0 :         nsAutoCString flavorStr;
     602           0 :         flavorWrapper->GetData( flavorStr );
     603             : 
     604           0 :         if (GetDataForFlavor (mDataArray, flavorStr.get())
     605             :             == mDataArray.NoIndex) // Don't append if already in intrinsic list
     606           0 :           array->AppendElement (flavorWrapper, /*weak =*/ false);
     607             :       } // foreach flavor that can be converted to
     608             :     }
     609             :   } // if a converter exists
     610             : 
     611           0 :   array.forget(_retval);
     612           0 :   return NS_OK;
     613             : } // FlavorsTransferableCanExport
     614             : 
     615             : NS_IMETHODIMP
     616           0 : nsTransferable::GetIsPrivateData(bool *aIsPrivateData)
     617             : {
     618           0 :   MOZ_ASSERT(mInitialized);
     619             : 
     620           0 :   NS_ENSURE_ARG_POINTER(aIsPrivateData);
     621             : 
     622           0 :   *aIsPrivateData = mPrivateData;
     623             : 
     624           0 :   return NS_OK;
     625             : }
     626             : 
     627             : NS_IMETHODIMP
     628           0 : nsTransferable::SetIsPrivateData(bool aIsPrivateData)
     629             : {
     630           0 :   MOZ_ASSERT(mInitialized);
     631             : 
     632           0 :   mPrivateData = aIsPrivateData;
     633             : 
     634           0 :   return NS_OK;
     635             : }
     636             : 
     637             : NS_IMETHODIMP
     638           0 : nsTransferable::GetRequestingPrincipal(nsIPrincipal** outRequestingPrincipal)
     639             : {
     640           0 :   NS_IF_ADDREF(*outRequestingPrincipal = mRequestingPrincipal);
     641           0 :   return NS_OK;
     642             : }
     643             : 
     644             : NS_IMETHODIMP
     645           0 : nsTransferable::SetRequestingPrincipal(nsIPrincipal* aRequestingPrincipal)
     646             : {
     647           0 :   mRequestingPrincipal = aRequestingPrincipal;
     648           0 :   return NS_OK;
     649             : }
     650             : 
     651             : NS_IMETHODIMP
     652           0 : nsTransferable::GetContentPolicyType(nsContentPolicyType* outContentPolicyType)
     653             : {
     654           0 :   NS_ENSURE_ARG_POINTER(outContentPolicyType);
     655           0 :   *outContentPolicyType = mContentPolicyType;
     656           0 :   return NS_OK;
     657             : }
     658             : 
     659             : NS_IMETHODIMP
     660           0 : nsTransferable::SetContentPolicyType(nsContentPolicyType aContentPolicyType)
     661             : {
     662           0 :   mContentPolicyType = aContentPolicyType;
     663           0 :   return NS_OK;
     664             : }

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