1 files changed, 164 insertions, 0 deletions
diff --git a/widget/nsBaseClipboard.cpp b/widget/nsBaseClipboard.cpp
new file mode 100644
index 0000000000..5de21b10bc
--- /dev/null
+++ b/widget/nsBaseClipboard.cpp
@@ -0,0 +1,164 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "nsBaseClipboard.h"
+
+#include "mozilla/Logging.h"
+
+#include "nsIClipboardOwner.h"
+#include "nsCOMPtr.h"
+#include "nsError.h"
+#include "nsXPCOM.h"
+
+using mozilla::GenericPromise;
+using mozilla::LogLevel;
+
+nsBaseClipboard::nsBaseClipboard() : mEmptyingForSetData(false) {}
+
+nsBaseClipboard::~nsBaseClipboard() {
+  EmptyClipboard(kSelectionClipboard);
+  EmptyClipboard(kGlobalClipboard);
+  EmptyClipboard(kFindClipboard);
+}
+
+NS_IMPL_ISUPPORTS(nsBaseClipboard, nsIClipboard)
+
+/**
+ * Sets the transferable object
+ *
+ */
+NS_IMETHODIMP nsBaseClipboard::SetData(nsITransferable* aTransferable,
+                                       nsIClipboardOwner* anOwner,
+                                       int32_t aWhichClipboard) {
+  NS_ASSERTION(aTransferable, "clipboard given a null transferable");
+
+  CLIPBOARD_LOG("%s", __FUNCTION__);
+
+  if (aTransferable == mTransferable && anOwner == mClipboardOwner) {
+    CLIPBOARD_LOG("%s: skipping update.", __FUNCTION__);
+    return NS_OK;
+  }
+  bool selectClipPresent;
+  SupportsSelectionClipboard(&selectClipPresent);
+  bool findClipPresent;
+  SupportsFindClipboard(&findClipPresent);
+  if (!selectClipPresent && !findClipPresent &&
+      aWhichClipboard != kGlobalClipboard)
+    return NS_ERROR_FAILURE;
+
+  mEmptyingForSetData = true;
+  if (NS_FAILED(EmptyClipboard(aWhichClipboard))) {
+    CLIPBOARD_LOG("%s: emptying clipboard failed.", __FUNCTION__);
+  }
+  mEmptyingForSetData = false;
+
+  mClipboardOwner = anOwner;
+  mTransferable = aTransferable;
+
+  nsresult rv = NS_ERROR_FAILURE;
+  if (mTransferable) {
+    mIgnoreEmptyNotification = true;
+    rv = SetNativeClipboardData(aWhichClipboard);
+    mIgnoreEmptyNotification = false;
+  }
+  if (NS_FAILED(rv)) {
+    CLIPBOARD_LOG("%s: setting native clipboard data failed.", __FUNCTION__);
+  }
+
+  return rv;
+}
+
+/**
+ * Gets the transferable object
+ *
+ */
+NS_IMETHODIMP nsBaseClipboard::GetData(nsITransferable* aTransferable,
+                                       int32_t aWhichClipboard) {
+  NS_ASSERTION(aTransferable, "clipboard given a null transferable");
+
+  CLIPBOARD_LOG("%s", __FUNCTION__);
+
+  bool selectClipPresent;
+  SupportsSelectionClipboard(&selectClipPresent);
+  bool findClipPresent;
+  SupportsFindClipboard(&findClipPresent);
+  if (!selectClipPresent && !findClipPresent &&
+      aWhichClipboard != kGlobalClipboard)
+    return NS_ERROR_FAILURE;
+
+  if (aTransferable)
+    return GetNativeClipboardData(aTransferable, aWhichClipboard);
+
+  return NS_ERROR_FAILURE;
+}
+
+RefPtr<GenericPromise> nsBaseClipboard::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__);
+}
+
+NS_IMETHODIMP nsBaseClipboard::EmptyClipboard(int32_t aWhichClipboard) {
+  CLIPBOARD_LOG("%s: clipboard=%i", __FUNCTION__, aWhichClipboard);
+
+  bool selectClipPresent;
+  SupportsSelectionClipboard(&selectClipPresent);
+  bool findClipPresent;
+  SupportsFindClipboard(&findClipPresent);
+  if (!selectClipPresent && !findClipPresent &&
+      aWhichClipboard != kGlobalClipboard)
+    return NS_ERROR_FAILURE;
+
+  if (mIgnoreEmptyNotification) {
+    return NS_OK;
+  }
+
+  if (mClipboardOwner) {
+    mClipboardOwner->LosingOwnership(mTransferable);
+    mClipboardOwner = nullptr;
+  }
+
+  mTransferable = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseClipboard::HasDataMatchingFlavors(const nsTArray<nsCString>& aFlavorList,
+                                        int32_t aWhichClipboard,
+                                        bool* outResult) {
+  *outResult = true;  // say we always do.
+  return NS_OK;
+}
+
+RefPtr<DataFlavorsPromise> nsBaseClipboard::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__);
+}
+
+NS_IMETHODIMP
+nsBaseClipboard::SupportsSelectionClipboard(bool* _retval) {
+  *_retval = false;  // we don't support the selection clipboard by default.
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseClipboard::SupportsFindClipboard(bool* _retval) {
+  *_retval = false;  // we don't support the find clipboard by default.
+  return NS_OK;
+}