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