dom/events/RemoteDragStartData.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "nsContentAreaDragDrop.h"
   6 #include "RemoteDragStartData.h"
   7 #include "nsContentUtils.h"
   8 #include "nsICookieJarSettings.h"
   9 #include "nsVariant.h"
  10 #include "mozilla/dom/BlobImpl.h"
  11 #include "mozilla/dom/BrowserParent.h"
  12 #include "mozilla/dom/IPCBlobUtils.h"
  13 #include "mozilla/dom/DOMTypes.h"
  14 #include "mozilla/ipc/ProtocolUtils.h"
  15
  16 using namespace mozilla::ipc;
  17
  18 namespace mozilla::dom {
  19
  20 RemoteDragStartData::~RemoteDragStartData() = default;
  21
  22 RemoteDragStartData::RemoteDragStartData(
  23     BrowserParent* aBrowserParent,
  24     nsTArray<IPCTransferableData>&& aTransferableData,
  25     const LayoutDeviceIntRect& aRect, nsIPrincipal* aPrincipal,
  26     nsIContentSecurityPolicy* aCsp, nsICookieJarSettings* aCookieJarSettings,
  27     WindowContext* aSourceWindowContext, WindowContext* aSourceTopWindowContext)
  28     : mBrowserParent(aBrowserParent),
  29       mTransferableData(std::move(aTransferableData)),
  30       mRect(aRect),
  31       mPrincipal(aPrincipal),
  32       mCsp(aCsp),
  33       mCookieJarSettings(aCookieJarSettings),
  34       mSourceWindowContext(aSourceWindowContext),
  35       mSourceTopWindowContext(aSourceTopWindowContext) {}
  36
  37 void RemoteDragStartData::AddInitialDnDDataTo(
  38     DataTransfer* aDataTransfer, nsIPrincipal** aPrincipal,
  39     nsIContentSecurityPolicy** aCsp,
  40     nsICookieJarSettings** aCookieJarSettings) {
  41   NS_IF_ADDREF(*aPrincipal = mPrincipal);
  42   NS_IF_ADDREF(*aCsp = mCsp);
  43   NS_IF_ADDREF(*aCookieJarSettings = mCookieJarSettings);
  44
  45   for (uint32_t i = 0; i < mTransferableData.Length(); ++i) {
  46     nsTArray<IPCTransferableDataItem>& itemArray = mTransferableData[i].items();
  47     for (auto& item : itemArray) {
  48       if (!nsContentUtils::IPCTransferableDataItemHasKnownFlavor(item)) {
  49         NS_WARNING(
  50             "Ignoring unknown flavor in "
  51             "RemoteDragStartData::AddInitialDnDDataTo");
  52         continue;
  53       }
  54
  55       RefPtr<nsVariantCC> variant = new nsVariantCC();
  56       // Special case kFilePromiseMime so that we get the right
  57       // nsIFlavorDataProvider for it.
  58       if (item.flavor().EqualsLiteral(kFilePromiseMime)) {
  59         RefPtr<nsISupports> flavorDataProvider =
  60             new nsContentAreaDragDropDataProvider();
  61         variant->SetAsISupports(flavorDataProvider);
  62       } else {
  63         nsresult rv =
  64             nsContentUtils::IPCTransferableDataItemToVariant(item, variant);
  65         if (NS_FAILED(rv)) {
  66           continue;
  67         }
  68       }
  69
  70       // We set aHidden to false, as we don't need to worry about hiding data
  71       // from content in the parent process where there is no content.
  72       aDataTransfer->SetDataWithPrincipalFromOtherProcess(
  73           NS_ConvertUTF8toUTF16(item.flavor()), variant, i, mPrincipal,
  74           /* aHidden = */ false);
  75     }
  76   }
  77
  78   // Clear things that are no longer needed.
  79   mTransferableData.Clear();
  80   mPrincipal = nullptr;
  81 }
  82
  83 }  // namespace mozilla::dom