The Tor Browser: dom/file/FileRequest.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set ts=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/. */

     7 #include "FileRequest.h"

     9 #include "mozilla/EventDispatcher.h"

    10 #include "mozilla/dom/FileRequestBinding.h"

    11 #include "nsCxPusher.h"

    12 #include "nsError.h"

    13 #include "nsIDOMProgressEvent.h"

    14 #include "nsDOMClassInfoID.h"

    15 #include "FileHelper.h"

    16 #include "LockedFile.h"

    18 using namespace mozilla;

    20 USING_FILE_NAMESPACE

    22 FileRequest::FileRequest(nsPIDOMWindow* aWindow)

    23   : DOMRequest(aWindow), mWrapAsDOMRequest(false)

    24 {

    25   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");

    26 }

    28 FileRequest::~FileRequest()

    29 {

    30   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");

    31 }

    33 // static

    34 already_AddRefed<FileRequest>

    35 FileRequest::Create(nsPIDOMWindow* aOwner, LockedFile* aLockedFile,

    36                     bool aWrapAsDOMRequest)

    37 {

    38   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");

    40   nsRefPtr<FileRequest> request = new FileRequest(aOwner);

    41   request->mLockedFile = aLockedFile;

    42   request->mWrapAsDOMRequest = aWrapAsDOMRequest;

    44   return request.forget();

    45 }

    47 nsresult

    48 FileRequest::PreHandleEvent(EventChainPreVisitor& aVisitor)

    49 {

    50   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");

    52   aVisitor.mCanHandle = true;

    53   aVisitor.mParentTarget = mLockedFile;

    54   return NS_OK;

    55 }

    57 nsresult

    58 FileRequest::NotifyHelperCompleted(FileHelper* aFileHelper)

    59 {

    60   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");

    62   nsresult rv = aFileHelper->mResultCode;

    64   // If the request failed then fire error event and return.

    65   if (NS_FAILED(rv)) {

    66     FireError(rv);

    67     return NS_OK;

    68   }

    70   // Otherwise we need to get the result from the helper.

    71   nsIScriptContext* sc = GetContextForEventHandlers(&rv);

    72   NS_ENSURE_STATE(sc);

    74   AutoJSContext cx;

    75   NS_ASSERTION(cx, "Failed to get a context!");

    77   JS::Rooted<JS::Value> result(cx);

    79   JS::Rooted<JSObject*> global(cx, sc->GetWindowProxy());

    80   NS_ASSERTION(global, "Failed to get global object!");

    82   JSAutoCompartment ac(cx, global);

    84   rv = aFileHelper->GetSuccessResult(cx, &result);

    85   if (NS_FAILED(rv)) {

    86     NS_WARNING("GetSuccessResult failed!");

    87   }

    89   if (NS_SUCCEEDED(rv)) {

    90     FireSuccess(result);

    91   }

    92   else {

    93     FireError(rv);

    94   }

    96   return NS_OK;

    97 }

    99 NS_IMPL_CYCLE_COLLECTION_INHERITED(FileRequest, DOMRequest,

   100                                    mLockedFile)

   102 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(FileRequest)

   103 NS_INTERFACE_MAP_END_INHERITING(DOMRequest)

   105 NS_IMPL_ADDREF_INHERITED(FileRequest, DOMRequest)

   106 NS_IMPL_RELEASE_INHERITED(FileRequest, DOMRequest)

   108 // virtual

   109 JSObject*

   110 FileRequest::WrapObject(JSContext* aCx)

   111 {

   112   if (mWrapAsDOMRequest) {

   113     return DOMRequest::WrapObject(aCx);

   114   }

   115   return FileRequestBinding::Wrap(aCx, this);

   116 }

   118 LockedFile*

   119 FileRequest::GetLockedFile() const

   120 {

   121   MOZ_ASSERT(NS_IsMainThread(), "Wrong thread!");

   122   return mLockedFile;

   123 }

   125 void

   126 FileRequest::FireProgressEvent(uint64_t aLoaded, uint64_t aTotal)

   127 {

   128   if (NS_FAILED(CheckInnerWindowCorrectness())) {

   129     return;

   130   }

   132   nsCOMPtr<nsIDOMEvent> event;

   133   nsresult rv = NS_NewDOMProgressEvent(getter_AddRefs(event), this,

   134                                        nullptr, nullptr);

   135   if (NS_FAILED(rv)) {

   136     return;

   137   }

   139   nsCOMPtr<nsIDOMProgressEvent> progress = do_QueryInterface(event);

   140   MOZ_ASSERT(progress);

   141   rv = progress->InitProgressEvent(NS_LITERAL_STRING("progress"), false, false,

   142                                    false, aLoaded, aTotal);

   143   if (NS_FAILED(rv)) {

   144     return;

   145   }

   147   DispatchTrustedEvent(event);

   148 }

The Tor Browser / file revision