1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/base/DOMCursor.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,85 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim: set ts=2 et sw=2 tw=80: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.8 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "DOMCursor.h"
1.11 +#include "mozilla/dom/DOMCursorBinding.h"
1.12 +
1.13 +namespace mozilla {
1.14 +namespace dom {
1.15 +
1.16 +NS_IMPL_CYCLE_COLLECTION_INHERITED(DOMCursor, DOMRequest,
1.17 + mCallback)
1.18 +
1.19 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DOMCursor)
1.20 + NS_INTERFACE_MAP_ENTRY(nsIDOMDOMCursor)
1.21 +NS_INTERFACE_MAP_END_INHERITING(DOMRequest)
1.22 +
1.23 +NS_IMPL_ADDREF_INHERITED(DOMCursor, DOMRequest)
1.24 +NS_IMPL_RELEASE_INHERITED(DOMCursor, DOMRequest)
1.25 +
1.26 +DOMCursor::DOMCursor(nsPIDOMWindow* aWindow, nsICursorContinueCallback* aCallback)
1.27 + : DOMRequest(aWindow)
1.28 + , mCallback(aCallback)
1.29 + , mFinished(false)
1.30 +{
1.31 +}
1.32 +
1.33 +void
1.34 +DOMCursor::Reset()
1.35 +{
1.36 + MOZ_ASSERT(!mFinished);
1.37 +
1.38 + // Reset the request state so we can FireSuccess() again.
1.39 + mResult = JSVAL_VOID;
1.40 + mDone = false;
1.41 +}
1.42 +
1.43 +void
1.44 +DOMCursor::FireDone()
1.45 +{
1.46 + Reset();
1.47 + mFinished = true;
1.48 + FireSuccess(JS::UndefinedHandleValue);
1.49 +}
1.50 +
1.51 +NS_IMETHODIMP
1.52 +DOMCursor::GetDone(bool *aDone)
1.53 +{
1.54 + *aDone = Done();
1.55 + return NS_OK;
1.56 +}
1.57 +
1.58 +NS_IMETHODIMP
1.59 +DOMCursor::Continue()
1.60 +{
1.61 + ErrorResult rv;
1.62 + Continue(rv);
1.63 + return rv.ErrorCode();
1.64 +}
1.65 +
1.66 +void
1.67 +DOMCursor::Continue(ErrorResult& aRv)
1.68 +{
1.69 + MOZ_ASSERT(mCallback, "If you're creating your own cursor class with no callback, you should override Continue()");
1.70 +
1.71 + // We need to have a result here because we must be in a 'success' state.
1.72 + if (mResult == JSVAL_VOID) {
1.73 + aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
1.74 + return;
1.75 + }
1.76 +
1.77 + Reset();
1.78 + mCallback->HandleContinue();
1.79 +}
1.80 +
1.81 +/* virtual */ JSObject*
1.82 +DOMCursor::WrapObject(JSContext* aCx)
1.83 +{
1.84 + return DOMCursorBinding::Wrap(aCx, this);
1.85 +}
1.86 +
1.87 +} // namespace dom
1.88 +} // namespace mozilla
