[Android] Prompt with infobar on filename conflict

chrome/browser/android/download_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_overwrite_infobar_delegate.h"
+
+#include "base/files/file_util.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/strings/stringprintf.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 chrome {
+namespace android {
+
+DownloadOverwriteInfoBarDelegate::~DownloadOverwriteInfoBarDelegate() {
+}

[qinmin, 2015/02/20 01:00:40]

nit: move this to the previous line

[Changwan Ryu, 2015/02/23 06:50:37]

This is the result of git cl format. It seems that in .h files {} in one line is
more prevalent, while { (new line) } is more prevalent in .cc files.

+
+// static
+void DownloadOverwriteInfoBarDelegate::Create(
+    InfoBarService* infobar_service,
+    const base::FilePath& suggested_path,
+    const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback) {
+  infobar_service->AddInfoBar(
+      DownloadOverwriteInfoBar::CreateInfoBar(make_scoped_ptr(
+          new DownloadOverwriteInfoBarDelegate(suggested_path, callback))));
+}
+
+void DownloadOverwriteInfoBarDelegate::OverwriteExistingFile() {
+  file_selected_callback_.Run(suggested_download_path_);
+}
+
+void DownloadOverwriteInfoBarDelegate::CreateNewFile() {
+  content::BrowserThread::PostTask(
+      content::BrowserThread::FILE, FROM_HERE,
+      base::Bind(&DownloadOverwriteInfoBarDelegate::CreateNewFileInternal,
+                 suggested_download_path_, file_selected_callback_));
+}
+
+DownloadOverwriteInfoBarDelegate::DownloadOverwriteInfoBarDelegate(
+    const base::FilePath& suggested_download_path,
+    const DownloadTargetDeterminerDelegate::FileSelectedCallback&
+        file_selected_callback)
+    : suggested_download_path_(suggested_download_path),
+      file_selected_callback_(file_selected_callback) {
+}
+
+bool DownloadOverwriteInfoBarDelegate::ShouldExpire(
+    const NavigationDetails& details) const {
+  return false;
+}
+
+void DownloadOverwriteInfoBarDelegate::InfoBarDismissed() {
+  file_selected_callback_.Run(base::FilePath());
+}
+
+void DownloadOverwriteInfoBarDelegate::CreateNewFileInternal(
+    const base::FilePath& suggested_download_path,
+    const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback) {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
+  int uniquifier = base::GetUniquePathNumber(suggested_download_path,
+                                             base::FilePath::StringType());
+  base::FilePath new_path = suggested_download_path;
+  if (uniquifier > 0) {
+    new_path = suggested_download_path.InsertBeforeExtensionASCII(
+        base::StringPrintf(" (%d)", uniquifier));
+  }
+  content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
+                                   base::Bind(callback, new_path));
+}
+
+}  // namespace android
+}  // namespace chrome