1 files changed, 54 insertions, 0 deletions
diff --git a/docshell/base/nsDocShellTransferableHooks.cpp b/docshell/base/nsDocShellTransferableHooks.cpp
new file mode 100644
index 000000000..441ade128
--- /dev/null
+++ b/docshell/base/nsDocShellTransferableHooks.cpp
@@ -0,0 +1,54 @@
+/* -*- 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 "nsDocShellTransferableHooks.h"
+#include "nsIClipboardDragDropHooks.h"
+#include "nsIClipboardDragDropHookList.h"
+#include "nsArrayEnumerator.h"
+
+nsTransferableHookData::nsTransferableHookData()
+{
+}
+
+nsTransferableHookData::~nsTransferableHookData()
+{
+}
+
+NS_IMPL_ISUPPORTS(nsTransferableHookData, nsIClipboardDragDropHookList)
+
+NS_IMETHODIMP
+nsTransferableHookData::AddClipboardDragDropHooks(
+    nsIClipboardDragDropHooks* aOverrides)
+{
+  NS_ENSURE_ARG(aOverrides);
+
+  // don't let a hook be added more than once
+  if (mHookList.IndexOfObject(aOverrides) == -1) {
+    if (!mHookList.AppendObject(aOverrides)) {
+      return NS_ERROR_FAILURE;
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTransferableHookData::RemoveClipboardDragDropHooks(
+    nsIClipboardDragDropHooks* aOverrides)
+{
+  NS_ENSURE_ARG(aOverrides);
+  if (!mHookList.RemoveObject(aOverrides)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTransferableHookData::GetHookEnumerator(nsISimpleEnumerator** aResult)
+{
+  return NS_NewArrayEnumerator(aResult, mHookList);
+}