1 files changed, 93 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/modules/filesystem/file_system_file_handle.cc b/chromium/third_party/blink/renderer/modules/filesystem/file_system_file_handle.cc
new file mode 100644
index 00000000000..91deae419cf
--- /dev/null
+++ b/chromium/third_party/blink/renderer/modules/filesystem/file_system_file_handle.cc
@@ -0,0 +1,93 @@
+// Copyright 2018 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/blink/renderer/modules/filesystem/file_system_file_handle.h"
+
+#include "third_party/blink/public/mojom/filesystem/file_writer.mojom-blink.h"
+#include "third_party/blink/public/platform/web_file_system.h"
+#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
+#include "third_party/blink/renderer/core/dom/dom_exception.h"
+#include "third_party/blink/renderer/core/fileapi/file.h"
+#include "third_party/blink/renderer/modules/filesystem/dom_file_system.h"
+#include "third_party/blink/renderer/modules/filesystem/file_system_callbacks.h"
+#include "third_party/blink/renderer/modules/filesystem/file_system_writer.h"
+
+namespace blink {
+
+namespace {
+
+class CreateWriterCallbacks
+    : public WebCallbacks<mojo::ScopedMessagePipeHandle, base::File::Error> {
+ public:
+  explicit CreateWriterCallbacks(ScriptPromiseResolver* resolver)
+      : resolver_(resolver) {}
+
+  void OnSuccess(mojo::ScopedMessagePipeHandle handle) override {
+    mojom::blink::FileWriterPtr mojo_writer(mojom::blink::FileWriterPtrInfo(
+        std::move(handle), mojom::blink::FileWriter::Version_));
+    resolver_->Resolve(new FileSystemWriter(std::move(mojo_writer)));
+  }
+
+  void OnError(base::File::Error error) override {
+    resolver_->Reject(FileError::CreateDOMException(error));
+  }
+
+ private:
+  Persistent<ScriptPromiseResolver> resolver_;
+};
+
+class OnDidCreateSnapshotFilePromise
+    : public SnapshotFileCallback::OnDidCreateSnapshotFileCallback {
+ public:
+  explicit OnDidCreateSnapshotFilePromise(ScriptPromiseResolver* resolver)
+      : resolver_(resolver) {}
+  void Trace(Visitor* visitor) override {
+    OnDidCreateSnapshotFileCallback::Trace(visitor);
+    visitor->Trace(resolver_);
+  }
+  void OnSuccess(File* file) override { resolver_->Resolve(file); }
+
+ private:
+  Member<ScriptPromiseResolver> resolver_;
+};
+
+}  // namespace
+
+FileSystemFileHandle::FileSystemFileHandle(DOMFileSystemBase* file_system,
+                                           const String& full_path)
+    : FileSystemBaseHandle(file_system, full_path) {}
+
+ScriptPromise FileSystemFileHandle::createWriter(ScriptState* script_state) {
+  if (!filesystem()->FileSystem()) {
+    return ScriptPromise::RejectWithDOMException(
+        script_state, FileError::CreateDOMException(FileError::kAbortErr));
+  }
+
+  auto* resolver = ScriptPromiseResolver::Create(script_state);
+  ScriptPromise result = resolver->Promise();
+  filesystem()->FileSystem()->CreateFileWriter(
+      filesystem()->CreateFileSystemURL(this),
+      std::make_unique<CreateWriterCallbacks>(resolver));
+  return result;
+}
+
+ScriptPromise FileSystemFileHandle::getFile(ScriptState* script_state) {
+  if (!filesystem()->FileSystem()) {
+    return ScriptPromise::RejectWithDOMException(
+        script_state, FileError::CreateDOMException(FileError::kAbortErr));
+  }
+
+  auto* resolver = ScriptPromiseResolver::Create(script_state);
+  ScriptPromise result = resolver->Promise();
+  KURL file_system_url = filesystem()->CreateFileSystemURL(this);
+  filesystem()->FileSystem()->CreateSnapshotFileAndReadMetadata(
+      file_system_url,
+      SnapshotFileCallback::Create(filesystem(), name(), file_system_url,
+                                   new OnDidCreateSnapshotFilePromise(resolver),
+                                   new PromiseErrorCallback(resolver),
+                                   ExecutionContext::From(script_state)));
+  return result;
+}
+
+}  // namespace blink