widget/windows/nsSharePicker.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  *
   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
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "nsSharePicker.h"
   8
   9 #include "nsString.h"
  10 #include "nsThreadUtils.h"
  11 #include "WindowsUIUtils.h"
  12 #include "nsPIDOMWindow.h"
  13 #include "mozilla/dom/Promise.h"
  14 #include "mozilla/ErrorResult.h"
  15 #include "mozilla/Unused.h"
  16
  17 using mozilla::dom::Promise;
  18
  19 ///////////////////////////////////////////////////////////////////////////////
  20 // nsISharePicker
  21
  22 NS_IMPL_ISUPPORTS(nsSharePicker, nsISharePicker)
  23
  24 namespace {
  25 inline NS_ConvertUTF8toUTF16 NS_ConvertUTF8toUTF16_MaybeVoid(
  26     const nsACString& aStr) {
  27   auto str = NS_ConvertUTF8toUTF16(aStr);
  28   str.SetIsVoid(aStr.IsVoid());
  29   return str;
  30 }
  31 inline nsIGlobalObject* GetGlobalObject() {
  32   return xpc::NativeGlobal(xpc::PrivilegedJunkScope());
  33 }
  34 }  // namespace
  35
  36 NS_IMETHODIMP
  37 nsSharePicker::Init(mozIDOMWindowProxy* aOpenerWindow) {
  38   if (mInited) {
  39     return NS_ERROR_FAILURE;
  40   }
  41   mOpenerWindow = aOpenerWindow;
  42   mInited = true;
  43   return NS_OK;
  44 }
  45
  46 NS_IMETHODIMP
  47 nsSharePicker::GetOpenerWindow(mozIDOMWindowProxy** aOpenerWindow) {
  48   *aOpenerWindow = mOpenerWindow;
  49   return NS_OK;
  50 }
  51
  52 NS_IMETHODIMP
  53 nsSharePicker::Share(const nsACString& aTitle, const nsACString& aText,
  54                      nsIURI* aUrl, Promise** aPromise) {
  55   mozilla::ErrorResult result;
  56   RefPtr<Promise> promise = Promise::Create(GetGlobalObject(), result);
  57   if (NS_WARN_IF(result.Failed())) {
  58     return result.StealNSResult();
  59   }
  60   nsAutoCString urlString;
  61   if (aUrl) {
  62     nsresult rv = aUrl->GetSpec(urlString);
  63     MOZ_ASSERT(NS_SUCCEEDED(rv));
  64     mozilla::Unused << rv;
  65   } else {
  66     urlString.SetIsVoid(true);
  67   }
  68
  69   auto mozPromise =
  70       WindowsUIUtils::Share(NS_ConvertUTF8toUTF16_MaybeVoid(aTitle),
  71                             NS_ConvertUTF8toUTF16_MaybeVoid(aText),
  72                             NS_ConvertUTF8toUTF16_MaybeVoid(urlString));
  73   mozPromise->Then(
  74       mozilla::GetCurrentSerialEventTarget(), __func__,
  75       [promise]() { promise->MaybeResolveWithUndefined(); },
  76       [promise]() { promise->MaybeReject(NS_ERROR_DOM_ABORT_ERR); });
  77
  78   promise.forget(aPromise);
  79
  80   return NS_OK;
  81 }