gecko-dev/dom/mobilemessage/MobileMessageCursorCallback.cpp
2015-05-03 15:32:37 -04:00

182 lines
5.1 KiB
C++

/* -*- 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 "MobileMessageCursorCallback.h"
#include "mozilla/dom/ScriptSettings.h"
#include "nsIDOMDOMRequest.h"
#include "nsIDOMMozSmsMessage.h"
#include "nsIMobileMessageCallback.h"
#include "nsServiceManagerUtils.h" // for do_GetService
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_INHERITED(MobileMessageCursor, DOMCursor,
mPendingResults)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(MobileMessageCursor)
NS_INTERFACE_MAP_END_INHERITING(DOMCursor)
NS_IMPL_ADDREF_INHERITED(MobileMessageCursor, DOMCursor)
NS_IMPL_RELEASE_INHERITED(MobileMessageCursor, DOMCursor)
MobileMessageCursor::MobileMessageCursor(nsPIDOMWindow* aWindow,
nsICursorContinueCallback* aCallback)
: DOMCursor(aWindow, aCallback)
{
}
NS_IMETHODIMP
MobileMessageCursor::Continue()
{
// We have originally:
//
// DOMCursor::Continue()
// +-> DOMCursor::Continue(ErrorResult& aRv)
//
// Now it becomes:
//
// MobileMessageCursor::Continue()
// +-> DOMCursor::Continue()
// +-> MobileMessageCursor::Continue(ErrorResult& aRv)
// o-> DOMCursor::Continue(ErrorResult& aRv)
return DOMCursor::Continue();
}
void
MobileMessageCursor::Continue(ErrorResult& aRv)
{
// An ordinary DOMCursor works in following flow:
//
// DOMCursor::Continue()
// +-> DOMCursor::Reset()
// +-> nsICursorContinueCallback::HandleContinue()
// +-> nsIMobileMessageCursorCallback::NotifyCursorResult()
// +-> DOMCursor::FireSuccess()
//
// With no pending result, we call to |DOMCursor::Continue()| as usual.
if (!mPendingResults.Length()) {
DOMCursor::Continue(aRv);
return;
}
// Otherwise, reset current result and fire a success event with the last
// pending one.
Reset();
nsresult rv = FireSuccessWithNextPendingResult();
if (NS_FAILED(rv)) {
aRv.Throw(rv);
}
}
nsresult
MobileMessageCursor::FireSuccessWithNextPendingResult()
{
// We're going to pop the last element from mPendingResults, so it must not
// be empty.
MOZ_ASSERT(mPendingResults.Length());
AutoJSAPI jsapi;
if (NS_WARN_IF(!jsapi.Init(GetOwner()))) {
return NS_ERROR_FAILURE;
}
JSContext* cx = jsapi.cx();
JS::Rooted<JS::Value> val(cx);
nsresult rv =
nsContentUtils::WrapNative(cx, mPendingResults.LastElement(), &val);
NS_ENSURE_SUCCESS(rv, rv);
mPendingResults.RemoveElementAt(mPendingResults.Length() - 1);
FireSuccess(val);
return NS_OK;
}
namespace mobilemessage {
NS_IMPL_CYCLE_COLLECTION(MobileMessageCursorCallback, mDOMCursor)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MobileMessageCursorCallback)
NS_INTERFACE_MAP_ENTRY(nsIMobileMessageCursorCallback)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(MobileMessageCursorCallback)
NS_IMPL_CYCLE_COLLECTING_RELEASE(MobileMessageCursorCallback)
// nsIMobileMessageCursorCallback
NS_IMETHODIMP
MobileMessageCursorCallback::NotifyCursorError(int32_t aError)
{
MOZ_ASSERT(mDOMCursor);
nsRefPtr<DOMCursor> cursor = mDOMCursor.forget();
switch (aError) {
case nsIMobileMessageCallback::NO_SIGNAL_ERROR:
cursor->FireError(NS_LITERAL_STRING("NoSignalError"));
break;
case nsIMobileMessageCallback::NOT_FOUND_ERROR:
cursor->FireError(NS_LITERAL_STRING("NotFoundError"));
break;
case nsIMobileMessageCallback::UNKNOWN_ERROR:
cursor->FireError(NS_LITERAL_STRING("UnknownError"));
break;
case nsIMobileMessageCallback::INTERNAL_ERROR:
cursor->FireError(NS_LITERAL_STRING("InternalError"));
break;
default: // SUCCESS_NO_ERROR is handled above.
MOZ_CRASH("Should never get here!");
}
return NS_OK;
}
NS_IMETHODIMP
MobileMessageCursorCallback::NotifyCursorResult(nsISupports** aResults,
uint32_t aSize)
{
MOZ_ASSERT(mDOMCursor);
// We should only be notified with valid results. Or, either
// |NotifyCursorDone()| or |NotifyCursorError()| should be called instead.
MOZ_ASSERT(aResults && *aResults && aSize);
// There shouldn't be unexpected notifications before |Continue()| is called.
nsTArray<nsCOMPtr<nsISupports>>& pending = mDOMCursor->mPendingResults;
MOZ_ASSERT(pending.Length() == 0);
// Push pending results in reversed order.
pending.SetCapacity(pending.Length() + aSize);
while (aSize) {
--aSize;
pending.AppendElement(aResults[aSize]);
}
nsresult rv = mDOMCursor->FireSuccessWithNextPendingResult();
if (NS_FAILED(rv)) {
NotifyCursorError(nsIMobileMessageCallback::INTERNAL_ERROR);
}
return NS_OK;
}
NS_IMETHODIMP
MobileMessageCursorCallback::NotifyCursorDone()
{
MOZ_ASSERT(mDOMCursor);
nsRefPtr<DOMCursor> cursor = mDOMCursor.forget();
cursor->FireDone();
return NS_OK;
}
} // namespace mobilemessage
} // namespace dom
} // namespace mozilla