michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "DOMCursor.h"
michael@0: #include "mozilla/dom/DOMCursorBinding.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_INHERITED(DOMCursor, DOMRequest,
michael@0:                                    mCallback)
michael@0: 
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DOMCursor)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIDOMDOMCursor)
michael@0: NS_INTERFACE_MAP_END_INHERITING(DOMRequest)
michael@0: 
michael@0: NS_IMPL_ADDREF_INHERITED(DOMCursor, DOMRequest)
michael@0: NS_IMPL_RELEASE_INHERITED(DOMCursor, DOMRequest)
michael@0: 
michael@0: DOMCursor::DOMCursor(nsPIDOMWindow* aWindow, nsICursorContinueCallback* aCallback)
michael@0:   : DOMRequest(aWindow)
michael@0:   , mCallback(aCallback)
michael@0:   , mFinished(false)
michael@0: {
michael@0: }
michael@0: 
michael@0: void
michael@0: DOMCursor::Reset()
michael@0: {
michael@0:   MOZ_ASSERT(!mFinished);
michael@0: 
michael@0:   // Reset the request state so we can FireSuccess() again.
michael@0:   mResult = JSVAL_VOID;
michael@0:   mDone = false;
michael@0: }
michael@0: 
michael@0: void
michael@0: DOMCursor::FireDone()
michael@0: {
michael@0:   Reset();
michael@0:   mFinished = true;
michael@0:   FireSuccess(JS::UndefinedHandleValue);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: DOMCursor::GetDone(bool *aDone)
michael@0: {
michael@0:   *aDone = Done();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: DOMCursor::Continue()
michael@0: {
michael@0:   ErrorResult rv;
michael@0:   Continue(rv);
michael@0:   return rv.ErrorCode();
michael@0: }
michael@0: 
michael@0: void
michael@0: DOMCursor::Continue(ErrorResult& aRv)
michael@0: {
michael@0:   MOZ_ASSERT(mCallback, "If you're creating your own cursor class with no callback, you should override Continue()");
michael@0: 
michael@0:   // We need to have a result here because we must be in a 'success' state.
michael@0:   if (mResult == JSVAL_VOID) {
michael@0:     aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   Reset();
michael@0:   mCallback->HandleContinue();
michael@0: }
michael@0: 
michael@0: /* virtual */ JSObject*
michael@0: DOMCursor::WrapObject(JSContext* aCx)
michael@0: {
michael@0:   return DOMCursorBinding::Wrap(aCx, this);
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla