Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 245 insertions, 0 deletions

diff --git a/dom/events/ClipboardItem.cpp b/dom/events/ClipboardItem.cpp
new file mode 100644
index 0000000000..62d90aef8f
--- /dev/null
+++ b/dom/events/ClipboardItem.cpp
@@ -0,0 +1,245 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/ClipboardItem.h"
+
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/Record.h"
+#include "nsComponentManagerUtils.h"
+#include "nsIClipboard.h"
+#include "nsIInputStream.h"
+#include "nsISupportsPrimitives.h"
+#include "nsNetUtil.h"
+#include "nsServiceManagerUtils.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION(ClipboardItem::ItemEntry, mData,
+                         mPendingGetTypeRequests)
+
+ClipboardItem::ItemEntry::ItemEntry(const nsAString& aType,
+                                    const nsACString& aFormat)
+    : mType(aType), mFormat(aFormat) {
+  // XXX https://bugzilla.mozilla.org/show_bug.cgi?id=1776879.
+  // In most of cases, the mType and mFormat are the same, execpt for plain
+  // text. We expose it as "text/plain" to the web, but we use "text/unicode"
+  // internally to retrieve from system clipboard.
+  MOZ_ASSERT_IF(
+      !mType.Equals(NS_ConvertUTF8toUTF16(mFormat)),
+      mType.EqualsLiteral(kTextMime) && mFormat.EqualsLiteral(kUnicodeMime));
+}
+
+void ClipboardItem::ItemEntry::SetData(already_AddRefed<Blob>&& aBlob) {
+  // XXX maybe we could consider adding a method to check whether the union
+  // object is uninitialized or initialized.
+  MOZ_DIAGNOSTIC_ASSERT(!mData.IsString() && !mData.IsBlob(),
+                        "Data should be uninitialized.");
+  MOZ_DIAGNOSTIC_ASSERT(
+      !mLoadingPromise.Exists(),
+      "Should not be in the process of loading data from clipboard.");
+  mData.SetAsBlob() = std::move(aBlob);
+}
+
+void ClipboardItem::ItemEntry::LoadData(nsIGlobalObject& aGlobal,
+                                        nsITransferable& aTransferable) {
+  // XXX maybe we could consider adding a method to check whether the union
+  // object is uninitialized or initialized.
+  MOZ_DIAGNOSTIC_ASSERT(!mData.IsString() && !mData.IsBlob(),
+                        "Data should be uninitialized.");
+  MOZ_DIAGNOSTIC_ASSERT(
+      !mLoadingPromise.Exists(),
+      "Should not be in the process of loading data from clipboard.");
+
+  nsresult rv;
+  nsCOMPtr<nsIClipboard> clipboard(
+      do_GetService("@mozilla.org/widget/clipboard;1", &rv));
+  if (NS_FAILED(rv)) {
+    return;
+  }
+
+  nsCOMPtr<nsITransferable> trans(&aTransferable);
+  clipboard->AsyncGetData(trans, nsIClipboard::kGlobalClipboard)
+      ->Then(
+          GetMainThreadSerialEventTarget(), __func__,
+          /* resolved */
+          [self = RefPtr{this}, global = RefPtr{&aGlobal}, trans]() {
+            self->mLoadingPromise.Complete();
+
+            nsCOMPtr<nsISupports> data;
+            nsresult rv = trans->GetTransferData(self->Format().get(),
+                                                 getter_AddRefs(data));
+            if (NS_WARN_IF(NS_FAILED(rv))) {
+              self->RejectPendingGetTypePromises(rv);
+              return;
+            }
+
+            RefPtr<Blob> blob;
+            if (nsCOMPtr<nsISupportsString> supportsstr =
+                    do_QueryInterface(data)) {
+              nsAutoString str;
+              supportsstr->GetData(str);
+
+              blob = Blob::CreateStringBlob(global, NS_ConvertUTF16toUTF8(str),
+                                            self->Type());
+            } else if (nsCOMPtr<nsIInputStream> istream =
+                           do_QueryInterface(data)) {
+              uint64_t available;
+              void* data = nullptr;
+              nsresult rv =
+                  NS_ReadInputStreamToBuffer(istream, &data, -1, &available);
+              if (NS_WARN_IF(NS_FAILED(rv))) {
+                self->RejectPendingGetTypePromises(rv);
+                return;
+              }
+
+              blob =
+                  Blob::CreateMemoryBlob(global, data, available, self->Type());
+            } else if (nsCOMPtr<nsISupportsCString> supportscstr =
+                           do_QueryInterface(data)) {
+              nsAutoCString str;
+              supportscstr->GetData(str);
+
+              blob = Blob::CreateStringBlob(global, str, self->Type());
+            }
+
+            if (!blob) {
+              self->RejectPendingGetTypePromises(NS_ERROR_DOM_DATA_ERR);
+              return;
+            }
+
+            self->ResolvePendingGetTypePromises(*blob);
+            self->SetData(blob.forget());
+          },
+          /* rejected */
+          [self = RefPtr{this}](nsresult rv) {
+            self->mLoadingPromise.Complete();
+            self->RejectPendingGetTypePromises(rv);
+          })
+      ->Track(mLoadingPromise);
+}
+
+void ClipboardItem::ItemEntry::ReactPromise(nsIGlobalObject& aGlobal,
+                                            Promise& aPromise) {
+  // Still loading data from system clipboard.
+  if (mLoadingPromise.Exists()) {
+    mPendingGetTypeRequests.AppendElement(&aPromise);
+    return;
+  }
+
+  if (mData.IsBlob()) {
+    aPromise.MaybeResolve(mData);
+    return;
+  }
+
+  // XXX This is for the case that data is from ClipboardItem constructor,
+  // maybe we should also load that into a Blob earlier. But Safari returns
+  // different `Blob` instances for each `getTypes` call if the string is from
+  // ClipboardItem constructor, which is more like our current setup.
+  if (mData.IsString()) {
+    if (RefPtr<Blob> blob = Blob::CreateStringBlob(
+            &aGlobal, NS_ConvertUTF16toUTF8(mData.GetAsString()), mType)) {
+      aPromise.MaybeResolve(blob);
+      return;
+    }
+  }
+
+  aPromise.MaybeRejectWithDataError("The data for type '"_ns +
+                                    NS_ConvertUTF16toUTF8(mType) +
+                                    "' was not found"_ns);
+}
+
+void ClipboardItem::ItemEntry::RejectPendingGetTypePromises(nsresult rv) {
+  MOZ_ASSERT(!mLoadingPromise.Exists(),
+             "Should not be in the process of loading data from clipboard.");
+  nsTArray<RefPtr<Promise>> promises = std::move(mPendingGetTypeRequests);
+  for (auto& promise : promises) {
+    promise->MaybeReject(rv);
+  }
+}
+
+void ClipboardItem::ItemEntry::ResolvePendingGetTypePromises(Blob& aBlob) {
+  MOZ_ASSERT(!mLoadingPromise.Exists(),
+             "Should not be in the process of loading data from clipboard.");
+  nsTArray<RefPtr<Promise>> promises = std::move(mPendingGetTypeRequests);
+  for (auto& promise : promises) {
+    promise->MaybeResolve(&aBlob);
+  }
+}
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(ClipboardItem, mOwner, mItems)
+
+ClipboardItem::ClipboardItem(nsISupports* aOwner,
+                             const dom::PresentationStyle aPresentationStyle,
+                             nsTArray<RefPtr<ItemEntry>>&& aItems)
+    : mOwner(aOwner),
+      mPresentationStyle(aPresentationStyle),
+      mItems(std::move(aItems)) {}
+
+// static
+already_AddRefed<ClipboardItem> ClipboardItem::Constructor(
+    const GlobalObject& aGlobal,
+    const Record<nsString, OwningStringOrBlob>& aItems,
+    const ClipboardItemOptions& aOptions, ErrorResult& aRv) {
+  if (aItems.Entries().IsEmpty()) {
+    aRv.ThrowTypeError("At least one entry required");
+    return nullptr;
+  }
+
+  nsTArray<RefPtr<ItemEntry>> items;
+  for (const auto& entry : aItems.Entries()) {
+    nsAutoCString format = entry.mKey.EqualsLiteral(kTextMime)
+                               ? nsAutoCString(kUnicodeMime)
+                               : NS_ConvertUTF16toUTF8(entry.mKey);
+    items.AppendElement(
+        MakeRefPtr<ItemEntry>(entry.mKey, format, entry.mValue));
+  }
+
+  RefPtr<ClipboardItem> item = MakeRefPtr<ClipboardItem>(
+      aGlobal.GetAsSupports(), aOptions.mPresentationStyle, std::move(items));
+  return item.forget();
+}
+
+void ClipboardItem::GetTypes(nsTArray<nsString>& aTypes) const {
+  for (const auto& item : mItems) {
+    aTypes.AppendElement(item->Type());
+  }
+}
+
+already_AddRefed<Promise> ClipboardItem::GetType(const nsAString& aType,
+                                                 ErrorResult& aRv) {
+  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetParentObject());
+  RefPtr<Promise> p = Promise::Create(global, aRv);
+  if (aRv.Failed()) {
+    return nullptr;
+  }
+
+  for (auto& item : mItems) {
+    MOZ_ASSERT(item);
+
+    const nsAString& type = item->Type();
+    if (type == aType) {
+      nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetParentObject());
+      if (NS_WARN_IF(!global)) {
+        p->MaybeReject(NS_ERROR_UNEXPECTED);
+        return p.forget();
+      }
+
+      item->ReactPromise(*global, *p);
+      return p.forget();
+    }
+  }
+
+  p->MaybeRejectWithNotFoundError(
+      "The type '"_ns + NS_ConvertUTF16toUTF8(aType) + "' was not found"_ns);
+  return p.forget();
+}
+
+JSObject* ClipboardItem::WrapObject(JSContext* aCx,
+                                    JS::Handle<JSObject*> aGivenProto) {
+  return mozilla::dom::ClipboardItem_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+}  // namespace mozilla::dom