1 files changed, 130 insertions, 0 deletions
diff --git a/widget/headless/HeadlessClipboard.cpp b/widget/headless/HeadlessClipboard.cpp
new file mode 100644
index 0000000000..a9843603dd
--- /dev/null
+++ b/widget/headless/HeadlessClipboard.cpp
@@ -0,0 +1,130 @@
+/* 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 "HeadlessClipboard.h"
+
+#include "nsISupportsPrimitives.h"
+#include "nsComponentManagerUtils.h"
+#include "nsCOMPtr.h"
+
+namespace mozilla {
+namespace widget {
+
+NS_IMPL_ISUPPORTS_INHERITED0(HeadlessClipboard, ClipboardSetDataHelper)
+
+HeadlessClipboard::HeadlessClipboard()
+    : mClipboard(MakeUnique<HeadlessClipboardData>()) {}
+
+NS_IMETHODIMP
+HeadlessClipboard::SetNativeClipboardData(nsITransferable* aTransferable,
+                                          nsIClipboardOwner* aOwner,
+                                          int32_t aWhichClipboard) {
+  if (aWhichClipboard != kGlobalClipboard) {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+
+  // Clear out the clipboard in order to set the new data.
+  EmptyClipboard(aWhichClipboard);
+
+  // Only support plain text for now.
+  nsCOMPtr<nsISupports> clip;
+  nsresult rv = aTransferable->GetTransferData(kTextMime, getter_AddRefs(clip));
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  nsCOMPtr<nsISupportsString> wideString = do_QueryInterface(clip);
+  if (!wideString) {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+  nsAutoString utf16string;
+  wideString->GetData(utf16string);
+  mClipboard->SetText(utf16string);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HeadlessClipboard::GetData(nsITransferable* aTransferable,
+                           int32_t aWhichClipboard) {
+  if (aWhichClipboard != kGlobalClipboard) {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+
+  nsresult rv;
+  nsCOMPtr<nsISupportsString> dataWrapper =
+      do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
+  rv = dataWrapper->SetData(mClipboard->GetText());
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+  nsCOMPtr<nsISupports> genericDataWrapper = do_QueryInterface(dataWrapper);
+  rv = aTransferable->SetTransferData(kTextMime, genericDataWrapper);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HeadlessClipboard::EmptyClipboard(int32_t aWhichClipboard) {
+  if (aWhichClipboard != kGlobalClipboard) {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+  mClipboard->Clear();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HeadlessClipboard::HasDataMatchingFlavors(
+    const nsTArray<nsCString>& aFlavorList, int32_t aWhichClipboard,
+    bool* aHasType) {
+  *aHasType = false;
+  if (aWhichClipboard != kGlobalClipboard) {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+  // Retrieve the union of all aHasType in aFlavorList
+  for (auto& flavor : aFlavorList) {
+    if (flavor.EqualsLiteral(kTextMime) && mClipboard->HasText()) {
+      *aHasType = true;
+      break;
+    }
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HeadlessClipboard::IsClipboardTypeSupported(int32_t aWhichClipboard,
+                                            bool* _retval) {
+  NS_ENSURE_ARG_POINTER(_retval);
+  *_retval = kGlobalClipboard == aWhichClipboard;
+  return NS_OK;
+}
+
+RefPtr<GenericPromise> HeadlessClipboard::AsyncGetData(
+    nsITransferable* aTransferable, int32_t aWhichClipboard) {
+  nsresult rv = GetData(aTransferable, aWhichClipboard);
+  if (NS_FAILED(rv)) {
+    return GenericPromise::CreateAndReject(rv, __func__);
+  }
+
+  return GenericPromise::CreateAndResolve(true, __func__);
+}
+
+RefPtr<DataFlavorsPromise> HeadlessClipboard::AsyncHasDataMatchingFlavors(
+    const nsTArray<nsCString>& aFlavorList, int32_t aWhichClipboard) {
+  nsTArray<nsCString> results;
+  for (const auto& flavor : aFlavorList) {
+    bool hasMatchingFlavor = false;
+    nsresult rv = HasDataMatchingFlavors(AutoTArray<nsCString, 1>{flavor},
+                                         aWhichClipboard, &hasMatchingFlavor);
+    if (NS_SUCCEEDED(rv) && hasMatchingFlavor) {
+      results.AppendElement(flavor);
+    }
+  }
+
+  return DataFlavorsPromise::CreateAndResolve(std::move(results), __func__);
+}
+
+}  // namespace widget
+}  // namespace mozilla