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       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
       5             :  * You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "IDBFileRequest.h"
       8             : 
       9             : #include "IDBFileHandle.h"
      10             : #include "js/RootingAPI.h"
      11             : #include "jsapi.h"
      12             : #include "mozilla/Assertions.h"
      13             : #include "mozilla/dom/IDBFileRequestBinding.h"
      14             : #include "mozilla/dom/ProgressEvent.h"
      15             : #include "mozilla/dom/ScriptSettings.h"
      16             : #include "mozilla/EventDispatcher.h"
      17             : #include "nsCOMPtr.h"
      18             : #include "nsDebug.h"
      19             : #include "nsError.h"
      20             : #include "nsLiteralString.h"
      21             : 
      22             : namespace mozilla {
      23             : namespace dom {
      24             : 
      25             : using namespace mozilla::dom::indexedDB;
      26             : 
      27           0 : IDBFileRequest::IDBFileRequest(IDBFileHandle* aFileHandle,
      28           0 :                                bool aWrapAsDOMRequest)
      29             :   : DOMRequest(aFileHandle->GetOwner())
      30             :   , mFileHandle(aFileHandle)
      31             :   , mWrapAsDOMRequest(aWrapAsDOMRequest)
      32           0 :   , mHasEncoding(false)
      33             : {
      34           0 :   MOZ_ASSERT(aFileHandle);
      35           0 :   aFileHandle->AssertIsOnOwningThread();
      36           0 : }
      37             : 
      38           0 : IDBFileRequest::~IDBFileRequest()
      39             : {
      40           0 :   AssertIsOnOwningThread();
      41           0 : }
      42             : 
      43             : // static
      44             : already_AddRefed<IDBFileRequest>
      45           0 : IDBFileRequest::Create(IDBFileHandle* aFileHandle,
      46             :                        bool aWrapAsDOMRequest)
      47             : {
      48           0 :   MOZ_ASSERT(aFileHandle);
      49           0 :   aFileHandle->AssertIsOnOwningThread();
      50             : 
      51             :   RefPtr<IDBFileRequest> request =
      52           0 :     new IDBFileRequest(aFileHandle, aWrapAsDOMRequest);
      53             : 
      54           0 :   return request.forget();
      55             : }
      56             : 
      57             : void
      58           0 : IDBFileRequest::FireProgressEvent(uint64_t aLoaded, uint64_t aTotal)
      59             : {
      60           0 :   AssertIsOnOwningThread();
      61             : 
      62           0 :   if (NS_FAILED(CheckInnerWindowCorrectness())) {
      63           0 :     return;
      64             :   }
      65             : 
      66           0 :   ProgressEventInit init;
      67           0 :   init.mBubbles = false;
      68           0 :   init.mCancelable = false;
      69           0 :   init.mLengthComputable = false;
      70           0 :   init.mLoaded = aLoaded;
      71           0 :   init.mTotal = aTotal;
      72             : 
      73             :   RefPtr<ProgressEvent> event =
      74           0 :     ProgressEvent::Constructor(this, NS_LITERAL_STRING("progress"), init);
      75           0 :   DispatchTrustedEvent(event);
      76             : }
      77             : 
      78             : void
      79           0 : IDBFileRequest::SetResultCallback(ResultCallback* aCallback)
      80             : {
      81           0 :   AssertIsOnOwningThread();
      82           0 :   MOZ_ASSERT(aCallback);
      83             : 
      84           0 :   AutoJSAPI autoJS;
      85           0 :   if (NS_WARN_IF(!autoJS.Init(GetOwner()))) {
      86           0 :     FireError(NS_ERROR_DOM_FILEHANDLE_UNKNOWN_ERR);
      87           0 :     return;
      88             :   }
      89             : 
      90           0 :   JSContext* cx = autoJS.cx();
      91             : 
      92           0 :   JS::Rooted<JS::Value> result(cx);
      93           0 :   nsresult rv = aCallback->GetResult(cx, &result);
      94           0 :   if (NS_WARN_IF(NS_FAILED(rv))) {
      95           0 :     FireError(rv);
      96             :   } else {
      97           0 :     FireSuccess(result);
      98             :   }
      99             : }
     100             : 
     101           0 : NS_IMPL_ADDREF_INHERITED(IDBFileRequest, DOMRequest)
     102           0 : NS_IMPL_RELEASE_INHERITED(IDBFileRequest, DOMRequest)
     103             : 
     104           0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IDBFileRequest)
     105           0 : NS_INTERFACE_MAP_END_INHERITING(DOMRequest)
     106             : 
     107           0 : NS_IMPL_CYCLE_COLLECTION_INHERITED(IDBFileRequest, DOMRequest,
     108             :                                    mFileHandle)
     109             : 
     110             : nsresult
     111           0 : IDBFileRequest::GetEventTargetParent(EventChainPreVisitor& aVisitor)
     112             : {
     113           0 :   AssertIsOnOwningThread();
     114             : 
     115           0 :   aVisitor.mCanHandle = true;
     116           0 :   aVisitor.mParentTarget = mFileHandle;
     117           0 :   return NS_OK;
     118             : }
     119             : 
     120             : // virtual
     121             : JSObject*
     122           0 : IDBFileRequest::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
     123             : {
     124           0 :   AssertIsOnOwningThread();
     125             : 
     126           0 :   if (mWrapAsDOMRequest) {
     127           0 :     return DOMRequest::WrapObject(aCx, aGivenProto);
     128             :   }
     129           0 :   return IDBFileRequestBinding::Wrap(aCx, this, aGivenProto);
     130             : }
     131             : 
     132             : } // namespace dom
     133             : } // namespace mozilla