/* -*- 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 "mozilla/dom/ClipboardEvent.h"

#include "mozilla/ContentEvents.h"

#include "mozilla/dom/DataTransfer.h"

#include "nsIClipboard.h"

namespace mozilla {

namespace dom {

ClipboardEvent::ClipboardEvent(EventTarget* aOwner,

                               nsPresContext* aPresContext,

                               InternalClipboardEvent* aEvent)

  : Event(aOwner, aPresContext,

          aEvent ? aEvent : new InternalClipboardEvent(false, eVoidEvent))

{

  if (aEvent) {

    mEventIsInternal = false;

  } else {

    mEventIsInternal = true;

    mEvent->mTime = PR_Now();

  }

}

void

ClipboardEvent::InitClipboardEvent(const nsAString& aType, bool aCanBubble,

                                   bool aCancelable,

                                   DataTransfer* aClipboardData)

{

  NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);

  Event::InitEvent(aType, aCanBubble, aCancelable);

  mEvent->AsClipboardEvent()->mClipboardData = aClipboardData;

}

already_AddRefed<ClipboardEvent>

ClipboardEvent::Constructor(const GlobalObject& aGlobal,

                            const nsAString& aType,

                            const ClipboardEventInit& aParam,

                            ErrorResult& aRv)

{

  nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());

  RefPtr<ClipboardEvent> e = new ClipboardEvent(t, nullptr, nullptr);

  bool trusted = e->Init(t);

  RefPtr<DataTransfer> clipboardData;

  if (e->mEventIsInternal) {

    InternalClipboardEvent* event = e->mEvent->AsClipboardEvent();

    if (event) {

      // Always create a clipboardData for the copy event. If this is changed to

      // support other types of events, make sure that read/write privileges are

      // checked properly within DataTransfer.

      clipboardData = new DataTransfer(ToSupports(e), eCopy, false, -1);

      clipboardData->SetData(aParam.mDataType, aParam.mData,

                             *aGlobal.GetSubjectPrincipal(), aRv);

      NS_ENSURE_TRUE(!aRv.Failed(), nullptr);

    }

  }

  e->InitClipboardEvent(aType, aParam.mBubbles, aParam.mCancelable,

                        clipboardData);

  e->SetTrusted(trusted);

  e->SetComposed(aParam.mComposed);

  return e.forget();

}

DataTransfer*

ClipboardEvent::GetClipboardData()

{

  InternalClipboardEvent* event = mEvent->AsClipboardEvent();

  if (!event->mClipboardData) {

    if (mEventIsInternal) {

      event->mClipboardData =

        new DataTransfer(ToSupports(this), eCopy, false, -1);

    } else {

      event->mClipboardData =

        new DataTransfer(ToSupports(this), event->mMessage,

                         event->mMessage == ePaste,

                         nsIClipboard::kGlobalClipboard);

    }

  }

  return event->mClipboardData;

}

} // namespace dom

} // namespace mozilla

using namespace mozilla;

using namespace mozilla::dom;

already_AddRefed<ClipboardEvent>

NS_NewDOMClipboardEvent(EventTarget* aOwner,

                        nsPresContext* aPresContext,

                        InternalClipboardEvent* aEvent)

{

  RefPtr<ClipboardEvent> it =

    new ClipboardEvent(aOwner, aPresContext, aEvent);

  return it.forget();

}