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/* -*- 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);
}