1 files changed, 288 insertions, 0 deletions
diff --git a/dom/quota/QuotaRequests.cpp b/dom/quota/QuotaRequests.cpp
new file mode 100644
index 0000000000..ee781831c8
--- /dev/null
+++ b/dom/quota/QuotaRequests.cpp
@@ -0,0 +1,288 @@
+/* -*- 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 "QuotaRequests.h"
+
+// Local includes
+#include "ActorsChild.h"
+
+// Global includes
+#include "mozilla/ErrorNames.h"
+#include "mozilla/MacroForEach.h"
+#include "nsDebug.h"
+#include "nsIQuotaCallbacks.h"
+#include "nsISupportsUtils.h"
+#include "nsIVariant.h"
+#include "nsStringFwd.h"
+#include "nscore.h"
+
+namespace mozilla {
+class Runnable;
+}
+
+namespace mozilla::dom::quota {
+
+RequestBase::RequestBase() : mResultCode(NS_OK), mHaveResultOrErrorCode(false) {
+  AssertIsOnOwningThread();
+}
+
+RequestBase::RequestBase(nsIPrincipal* aPrincipal)
+    : mPrincipal(aPrincipal),
+      mResultCode(NS_OK),
+      mHaveResultOrErrorCode(false) {
+  AssertIsOnOwningThread();
+}
+
+#ifdef DEBUG
+
+void RequestBase::AssertIsOnOwningThread() const {
+  NS_ASSERT_OWNINGTHREAD(RequestBase);
+}
+
+#endif  // DEBUG
+
+void RequestBase::SetError(nsresult aRv) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(mResultCode == NS_OK);
+  MOZ_ASSERT(!mHaveResultOrErrorCode);
+
+  mResultCode = aRv;
+  mHaveResultOrErrorCode = true;
+
+  FireCallback();
+}
+
+NS_IMPL_CYCLE_COLLECTION_0(RequestBase)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(RequestBase)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(RequestBase)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(RequestBase)
+
+NS_IMETHODIMP
+RequestBase::GetPrincipal(nsIPrincipal** aPrincipal) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aPrincipal);
+
+  NS_IF_ADDREF(*aPrincipal = mPrincipal);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+RequestBase::GetResultCode(nsresult* aResultCode) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aResultCode);
+
+  if (!mHaveResultOrErrorCode) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *aResultCode = mResultCode;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+RequestBase::GetResultName(nsACString& aResultName) {
+  AssertIsOnOwningThread();
+
+  if (!mHaveResultOrErrorCode) {
+    return NS_ERROR_FAILURE;
+  }
+
+  mozilla::GetErrorName(mResultCode, aResultName);
+  return NS_OK;
+}
+
+UsageRequest::UsageRequest(nsIQuotaUsageCallback* aCallback)
+    : mCallback(aCallback), mBackgroundActor(nullptr), mCanceled(false) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aCallback);
+}
+
+UsageRequest::UsageRequest(nsIPrincipal* aPrincipal,
+                           nsIQuotaUsageCallback* aCallback)
+    : RequestBase(aPrincipal),
+      mCallback(aCallback),
+      mBackgroundActor(nullptr),
+      mCanceled(false) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aPrincipal);
+  MOZ_ASSERT(aCallback);
+}
+
+UsageRequest::~UsageRequest() { AssertIsOnOwningThread(); }
+
+void UsageRequest::SetBackgroundActor(
+    QuotaUsageRequestChild* aBackgroundActor) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aBackgroundActor);
+  MOZ_ASSERT(!mBackgroundActor);
+
+  mBackgroundActor = aBackgroundActor;
+
+  if (mCanceled) {
+    mBackgroundActor->SendCancel();
+  }
+}
+
+void UsageRequest::SetResult(nsIVariant* aResult) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aResult);
+  MOZ_ASSERT(!mHaveResultOrErrorCode);
+
+  mResult = aResult;
+
+  mHaveResultOrErrorCode = true;
+
+  FireCallback();
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(UsageRequest, RequestBase, mCallback)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(UsageRequest)
+  NS_INTERFACE_MAP_ENTRY(nsIQuotaUsageRequest)
+NS_INTERFACE_MAP_END_INHERITING(RequestBase)
+
+NS_IMPL_ADDREF_INHERITED(UsageRequest, RequestBase)
+NS_IMPL_RELEASE_INHERITED(UsageRequest, RequestBase)
+
+NS_IMETHODIMP
+UsageRequest::GetResult(nsIVariant** aResult) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aResult);
+
+  if (!mHaveResultOrErrorCode) {
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_IF_ADDREF(*aResult = mResult);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+UsageRequest::GetCallback(nsIQuotaUsageCallback** aCallback) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aCallback);
+
+  NS_IF_ADDREF(*aCallback = mCallback);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+UsageRequest::SetCallback(nsIQuotaUsageCallback* aCallback) {
+  AssertIsOnOwningThread();
+
+  mCallback = aCallback;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+UsageRequest::Cancel() {
+  AssertIsOnOwningThread();
+
+  if (mCanceled) {
+    NS_WARNING("Canceled more than once?!");
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  if (mBackgroundActor) {
+    mBackgroundActor->SendCancel();
+  }
+
+  mCanceled = true;
+
+  return NS_OK;
+}
+
+void UsageRequest::FireCallback() {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(mCallback);
+
+  mCallback->OnUsageResult(this);
+
+  // Clean up.
+  mCallback = nullptr;
+}
+
+Request::Request() { AssertIsOnOwningThread(); }
+
+Request::Request(nsIPrincipal* aPrincipal) : RequestBase(aPrincipal) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aPrincipal);
+}
+
+Request::Request(nsIQuotaCallback* aCallback) : mCallback(aCallback) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aCallback);
+}
+
+Request::~Request() { AssertIsOnOwningThread(); }
+
+void Request::SetResult(nsIVariant* aResult) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aResult);
+  MOZ_ASSERT(!mHaveResultOrErrorCode);
+
+  mResult = aResult;
+
+  mHaveResultOrErrorCode = true;
+
+  FireCallback();
+}
+
+NS_IMETHODIMP
+Request::GetResult(nsIVariant** aResult) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aResult);
+
+  if (!mHaveResultOrErrorCode) {
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_IF_ADDREF(*aResult = mResult);
+  return NS_OK;
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(Request, RequestBase, mCallback, mResult)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Request)
+  NS_INTERFACE_MAP_ENTRY(nsIQuotaRequest)
+NS_INTERFACE_MAP_END_INHERITING(RequestBase)
+
+NS_IMPL_ADDREF_INHERITED(mozilla::dom::quota::Request, RequestBase)
+NS_IMPL_RELEASE_INHERITED(mozilla::dom::quota::Request, RequestBase)
+
+NS_IMETHODIMP
+Request::GetCallback(nsIQuotaCallback** aCallback) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aCallback);
+
+  NS_IF_ADDREF(*aCallback = mCallback);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Request::SetCallback(nsIQuotaCallback* aCallback) {
+  AssertIsOnOwningThread();
+
+  mCallback = aCallback;
+  return NS_OK;
+}
+
+void Request::FireCallback() {
+  AssertIsOnOwningThread();
+
+  if (mCallback) {
+    mCallback->OnComplete(this);
+
+    // Clean up.
+    mCallback = nullptr;
+  }
+}
+
+}  // namespace mozilla::dom::quota