Download driver for components/download.

components/download/content/driver_entry.cc

+// Copyright 2017 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 "components/download/content/driver_entry.h"
+
+#include "content/public/browser/download_item.h"
+#include "net/http/http_response_headers.h"
+
+namespace download {
+
+// Converts a content::DownloadItem::DownloadState to DriverEntry::State.
+namespace {
+
+DriverEntry::State ToDriverEntryState(
+    content::DownloadItem::DownloadState state) {
+  switch (state) {
+    case content::DownloadItem::IN_PROGRESS:
+      return DriverEntry::State::IN_PROGRESS;
+    case content::DownloadItem::COMPLETE:
+      return DriverEntry::State::COMPLETE;
+    case content::DownloadItem::CANCELLED:
+      return DriverEntry::State::CANCELLED;
+    case content::DownloadItem::INTERRUPTED:
+      return DriverEntry::State::INTERRUPTED;
+    case content::DownloadItem::MAX_DOWNLOAD_STATE:
+      return DriverEntry::State::UNKNOWN;

[David Trainor- moved to gerrit, 2017/05/18 18:29:44]

move the bottom two lines to default?

[xingliu, 2017/05/18 22:21:50]

Done.

+  }
+  NOTREACHED();
+  return DriverEntry::State::UNKNOWN;
+}
+
+}  // namespace
+
+// static
+DriverEntry DriverEntry::Create(const content::DownloadItem* item) {

[David Trainor- moved to gerrit, 2017/05/18 18:29:44]

Move this to somewhere in content/.  You'll have to move DriverEntry to
internal/.

[xingliu, 2017/05/18 22:21:50]

Done. This is now a static function in driver impl.

+  DriverEntry entry;
+  if (!item)
+    return entry;
+  entry.guid = item->GetGuid();
+  entry.state = ToDriverEntryState(item->GetState());
+  entry.paused = item->IsPaused();
+  entry.bytes_downloaded = item->GetReceivedBytes();
+  entry.expected_total_size = item->GetTotalBytes();
+  entry.response_headers = item->GetResponseHeaders();
+  return entry;
+}
+
+DriverEntry::DriverEntry()
+    : state(State::UNKNOWN),
+      paused(false),
+      bytes_downloaded(0u),
+      expected_total_size(0u) {}
+
+DriverEntry::DriverEntry(const DriverEntry& other) = default;
+
+DriverEntry::~DriverEntry() = default;
+
+bool DriverEntry::empty() const {
+  return state == State::UNKNOWN || guid.empty();
+}
+
+}  // namespace download