implementation for new duplicate download UI

chrome/browser/android/download/chrome_download_manager_overwrite_infobar_delegate.cc

-// Copyright 2015 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 "chrome/browser/android/download/chrome_download_manager_overwrite_infobar_delegate.h"
-
-#include <memory>
-
-#include "base/android/jni_android.h"
-#include "base/android/jni_string.h"
-#include "base/android/path_utils.h"
-#include "base/files/file_util.h"
-#include "base/memory/ptr_util.h"
-#include "base/strings/stringprintf.h"
-#include "chrome/browser/android/download/download_controller.h"
-#include "chrome/browser/android/download/download_manager_service.h"
-#include "chrome/browser/infobars/infobar_service.h"
-#include "chrome/browser/ui/android/infobars/download_overwrite_infobar.h"
-#include "components/infobars/core/infobar.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/web_contents.h"
-
-namespace {
-
-void DeleteExistingDownloadFileDone(
-    const base::FilePath& download_path,
-    const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  DownloadManagerService::GetInstance()->RemoveDownloadsForPath(
-      download_path);
-  callback.Run(download_path);
-}
-
-void DeleteExistingDownloadFile(
-    const base::FilePath& download_path,
-    const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
-  base::File::Info info;
-  if (GetFileInfo(download_path, &info) && !info.is_directory)
-    base::DeleteFile(download_path, false);
-
-  content::BrowserThread::PostTask(
-      content::BrowserThread::UI, FROM_HERE,
-      base::Bind(&DeleteExistingDownloadFileDone, download_path, callback));
-}
-
-void CreateNewFileDone(
-    const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback,
-    const base::FilePath& target_path, bool verified) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  if (verified)
-    callback.Run(target_path);
-  else
-    callback.Run(base::FilePath());
-}
-
-}  // namespace
-
-namespace chrome {
-namespace android {
-
-ChromeDownloadManagerOverwriteInfoBarDelegate::
-    ~ChromeDownloadManagerOverwriteInfoBarDelegate() {
-  if (download_item_)
-    download_item_->RemoveObserver(this);
-}
-
-// static
-void ChromeDownloadManagerOverwriteInfoBarDelegate::Create(
-    InfoBarService* infobar_service,
-    content::DownloadItem* download_item,
-    const base::FilePath& suggested_path,
-    const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback) {
-  infobar_service->AddInfoBar(DownloadOverwriteInfoBar::CreateInfoBar(
-      base::WrapUnique(new ChromeDownloadManagerOverwriteInfoBarDelegate(
-          download_item, suggested_path, callback))));
-}
-
-void ChromeDownloadManagerOverwriteInfoBarDelegate::OnDownloadDestroyed(
-    content::DownloadItem* download_item) {
-  DCHECK_EQ(download_item, download_item_);
-  download_item_ = nullptr;
-}
-
-ChromeDownloadManagerOverwriteInfoBarDelegate::
-    ChromeDownloadManagerOverwriteInfoBarDelegate(
-        content::DownloadItem* download_item,
-        const base::FilePath& suggested_download_path,
-        const DownloadTargetDeterminerDelegate::FileSelectedCallback&
-            file_selected_callback)
-    : download_item_(download_item),
-      suggested_download_path_(suggested_download_path),
-      file_selected_callback_(file_selected_callback) {
-  download_item_->AddObserver(this);
-}
-
-infobars::InfoBarDelegate::InfoBarIdentifier
-ChromeDownloadManagerOverwriteInfoBarDelegate::GetIdentifier() const {
-  return CHROME_DOWNLOAD_MANAGER_OVERWRITE_INFOBAR_DELEGATE;
-}
-
-bool ChromeDownloadManagerOverwriteInfoBarDelegate::OverwriteExistingFile() {
-  if (!download_item_)
-    return true;
-
-  content::BrowserThread::PostTask(
-      content::BrowserThread::FILE, FROM_HERE,
-      base::Bind(&DeleteExistingDownloadFile, suggested_download_path_,
-                 file_selected_callback_));
-  return true;
-}
-
-bool ChromeDownloadManagerOverwriteInfoBarDelegate::CreateNewFile() {
-  if (!download_item_)
-    return true;
-
-  base::FilePath download_dir;
-  if (!base::android::GetDownloadsDirectory(&download_dir))
-    return true;
-
-  DownloadPathReservationTracker::GetReservedPath(
-      download_item_,
-      suggested_download_path_,
-      download_dir,
-      true,
-      DownloadPathReservationTracker::UNIQUIFY,
-      base::Bind(&CreateNewFileDone, file_selected_callback_));
-  return true;
-}
-
-std::string ChromeDownloadManagerOverwriteInfoBarDelegate::GetFileName() const {
-  return suggested_download_path_.BaseName().value();
-}
-
-std::string ChromeDownloadManagerOverwriteInfoBarDelegate::GetDirName() const {
-  return suggested_download_path_.DirName().BaseName().value();
-}
-
-std::string ChromeDownloadManagerOverwriteInfoBarDelegate::GetDirFullPath()
-    const {
-  return suggested_download_path_.DirName().value();
-}
-
-void ChromeDownloadManagerOverwriteInfoBarDelegate::InfoBarDismissed() {
-  file_selected_callback_.Run(base::FilePath());
-  DownloadController::RecordDownloadCancelReason(
-      DownloadController::CANCEL_REASON_OVERWRITE_INFOBAR_DISMISSED);
-}
-
-}  // namespace android
-}  // namespace chrome