1 files changed, 117 insertions, 0 deletions
diff --git a/widget/nsBaseClipboard.cpp b/widget/nsBaseClipboard.cpp
new file mode 100644
index 0000000000..91da56d0ad
--- /dev/null
+++ b/widget/nsBaseClipboard.cpp
@@ -0,0 +1,117 @@
+/* -*- 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 "nsIClipboardOwner.h"
+#include "nsCOMPtr.h"
+#include "nsXPCOM.h"
+
+nsBaseClipboard::nsBaseClipboard()
+    : mEmptyingForSetData(false), mIgnoreEmptyNotification(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");
+
+  if (aTransferable == mTransferable && anOwner == mClipboardOwner)
+    return NS_OK;
+  bool selectClipPresent;
+  SupportsSelectionClipboard(&selectClipPresent);
+  bool findClipPresent;
+  SupportsFindClipboard(&findClipPresent);
+  if (!selectClipPresent && !findClipPresent &&
+      aWhichClipboard != kGlobalClipboard)
+    return NS_ERROR_FAILURE;
+
+  mEmptyingForSetData = true;
+  EmptyClipboard(aWhichClipboard);
+  mEmptyingForSetData = false;
+
+  mClipboardOwner = anOwner;
+  mTransferable = aTransferable;
+
+  nsresult rv = NS_ERROR_FAILURE;
+  if (mTransferable) {
+    rv = SetNativeClipboardData(aWhichClipboard);
+  }
+
+  return rv;
+}
+
+/**
+ * Gets the transferable object
+ *
+ */
+NS_IMETHODIMP nsBaseClipboard::GetData(nsITransferable* aTransferable,
+                                       int32_t aWhichClipboard) {
+  NS_ASSERTION(aTransferable, "clipboard given a null transferable");
+
+  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;
+}
+
+NS_IMETHODIMP nsBaseClipboard::EmptyClipboard(int32_t 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;
+}
+
+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;
+}