From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 02:47:55 +0200
Subject: Adding upstream version 124.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 widget/ClipboardReadRequestParent.cpp | 115 ++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 widget/ClipboardReadRequestParent.cpp

(limited to 'widget/ClipboardReadRequestParent.cpp')

diff --git a/widget/ClipboardReadRequestParent.cpp b/widget/ClipboardReadRequestParent.cpp
new file mode 100644
index 0000000000..3f045a800a
--- /dev/null
+++ b/widget/ClipboardReadRequestParent.cpp
@@ -0,0 +1,115 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "mozilla/ClipboardReadRequestParent.h"
+
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/net/CookieJarSettings.h"
+#include "nsComponentManagerUtils.h"
+#include "nsIClipboard.h"
+#include "nsITransferable.h"
+#include "nsWidgetsCID.h"
+
+using mozilla::dom::ContentParent;
+using mozilla::ipc::IPCResult;
+
+namespace mozilla {
+
+namespace {
+
+class ClipboardGetDataCallback final : public nsIAsyncClipboardRequestCallback {
+ public:
+  explicit ClipboardGetDataCallback(std::function<void(nsresult)>&& aCallback)
+      : mCallback(std::move(aCallback)) {}
+
+  // This object will never be held by a cycle-collected object, so it doesn't
+  // need to be cycle-collected despite holding alive cycle-collected objects.
+  NS_DECL_ISUPPORTS
+
+  // nsIAsyncClipboardRequestCallback
+  NS_IMETHOD OnComplete(nsresult aResult) override {
+    mCallback(aResult);
+    return NS_OK;
+  }
+
+ protected:
+  ~ClipboardGetDataCallback() = default;
+
+  std::function<void(nsresult)> mCallback;
+};
+
+NS_IMPL_ISUPPORTS(ClipboardGetDataCallback, nsIAsyncClipboardRequestCallback)
+
+static Result<nsCOMPtr<nsITransferable>, nsresult> CreateTransferable(
+    const nsTArray<nsCString>& aTypes) {
+  nsresult rv;
+  nsCOMPtr<nsITransferable> trans =
+      do_CreateInstance("@mozilla.org/widget/transferable;1", &rv);
+  if (NS_FAILED(rv)) {
+    return Err(rv);
+  }
+
+  MOZ_TRY(trans->Init(nullptr));
+  // The private flag is only used to prevent the data from being cached to the
+  // disk. The flag is not exported to the IPCDataTransfer object.
+  // The flag is set because we are not sure whether the clipboard data is used
+  // in a private browsing context. The transferable is only used in this scope,
+  // so the cache would not reduce memory consumption anyway.
+  trans->SetIsPrivateData(true);
+  // Fill out flavors for transferable
+  for (uint32_t t = 0; t < aTypes.Length(); t++) {
+    MOZ_TRY(trans->AddDataFlavor(aTypes[t].get()));
+  }
+
+  return std::move(trans);
+}
+
+}  // namespace
+
+IPCResult ClipboardReadRequestParent::RecvGetData(
+    const nsTArray<nsCString>& aFlavors, GetDataResolver&& aResolver) {
+  bool valid = false;
+  if (NS_FAILED(mAsyncGetClipboardData->GetValid(&valid)) || !valid) {
+    Unused << PClipboardReadRequestParent::Send__delete__(this);
+    aResolver(NS_ERROR_FAILURE);
+    return IPC_OK();
+  }
+
+  // Create transferable
+  auto result = CreateTransferable(aFlavors);
+  if (result.isErr()) {
+    aResolver(result.unwrapErr());
+    return IPC_OK();
+  }
+
+  nsCOMPtr<nsITransferable> trans = result.unwrap();
+  RefPtr<ClipboardGetDataCallback> callback =
+      MakeRefPtr<ClipboardGetDataCallback>([self = RefPtr{this},
+                                            resolver = std::move(aResolver),
+                                            trans,
+                                            manager = mManager](nsresult aRv) {
+        if (NS_FAILED(aRv)) {
+          bool valid = false;
+          if (NS_FAILED(self->mAsyncGetClipboardData->GetValid(&valid)) ||
+              !valid) {
+            Unused << PClipboardReadRequestParent::Send__delete__(self);
+          }
+          resolver(aRv);
+          return;
+        }
+
+        dom::IPCTransferableData ipcTransferableData;
+        nsContentUtils::TransferableToIPCTransferableData(
+            trans, &ipcTransferableData, false /* aInSyncMessage */, manager);
+        resolver(std::move(ipcTransferableData));
+      });
+  nsresult rv = mAsyncGetClipboardData->GetData(trans, callback);
+  if (NS_FAILED(rv)) {
+    callback->OnComplete(rv);
+  }
+  return IPC_OK();
+}
+
+}  // namespace mozilla
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