[Android] Prompt with infobar on filename conflict

chrome/browser/android/download/chrome_download_manager_overwrite_infobar_delegate.h

+// 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.
+
+#ifndef CHROME_BROWSER_ANDROID_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_OVERWRITE_INFOBAR_DELEGATE_H_
+#define CHROME_BROWSER_ANDROID_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_OVERWRITE_INFOBAR_DELEGATE_H_
+
+#include "base/android/scoped_java_ref.h"
+#include "base/callback.h"
+#include "base/files/file_path.h"
+#include "chrome/browser/android/download/download_overwrite_infobar_delegate.h"
+#include "chrome/browser/download/download_target_determiner_delegate.h"
+#include "components/infobars/core/infobar_delegate.h"
+
+using base::android::ScopedJavaGlobalRef;
+
+class InfoBarService;
+
+namespace chrome {
+namespace android {
+
+// An infobar delegate that starts from the given file path.
+class ChromeDownloadManagerOverwriteInfoBarDelegate
+    : public DownloadOverwriteInfoBarDelegate {
+ public:
+  ~ChromeDownloadManagerOverwriteInfoBarDelegate() override;
+
+  static void Create(
+      InfoBarService* infobar_service,
+      const base::FilePath& suggested_download_path,
+      const DownloadTargetDeterminerDelegate::FileSelectedCallback&
+          file_selected_callback);
+
+ private:
+  ChromeDownloadManagerOverwriteInfoBarDelegate(
+      const base::FilePath& suggested_path,
+      const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback);
+
+  // DownloadOverwriteInfoBarDelegate:
+  void OverwriteExistingFile() override;
+  void CreateNewFile() override;
+  std::string GetFileName() const override;
+  std::string GetDirName() const override;
+  std::string GetDirFullPath() const override;
+  void InfoBarDismissed() override;
+
+  // Called on the FILE thread to create a new file.  Calls |callback| on the UI
+  // thread when finished.
+  static void CreateNewFileInternal(
+      const base::FilePath& suggested_download_path,
+      const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback);
+
+  // The suggested download path from download target determiner. This is used
+  // to show users the file name and the directory that will be used.
+  base::FilePath suggested_download_path_;
+
+  // A callback to download target determiner to notify that file selection
+  // is made (or cancelled).
+  DownloadTargetDeterminerDelegate::FileSelectedCallback
+      file_selected_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeDownloadManagerOverwriteInfoBarDelegate);
+};
+
+}  // namespace android
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_ANDROID_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_OVERWRITE_INFOBAR_DELEGATE_H_