[Android] Prompt with infobar on filename conflict

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 "base/android/jni_android.h"
+#include "base/android/jni_string.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 {
+
+ChromeDownloadManagerOverwriteInfoBarDelegate::
+    ~ChromeDownloadManagerOverwriteInfoBarDelegate() {
+}
+
+// static
+void ChromeDownloadManagerOverwriteInfoBarDelegate::Create(
+    InfoBarService* infobar_service,
+    const base::FilePath& suggested_path,
+    const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback) {
+  infobar_service->AddInfoBar(DownloadOverwriteInfoBar::CreateInfoBar(
+      make_scoped_ptr(new ChromeDownloadManagerOverwriteInfoBarDelegate(
+          suggested_path, callback))));
+}
+
+ChromeDownloadManagerOverwriteInfoBarDelegate::
+    ChromeDownloadManagerOverwriteInfoBarDelegate(
+        const base::FilePath& suggested_download_path,
+        const DownloadTargetDeterminerDelegate::FileSelectedCallback&
+            file_selected_callback)
+    : suggested_download_path_(suggested_download_path),
+      file_selected_callback_(file_selected_callback) {
+}
+
+void ChromeDownloadManagerOverwriteInfoBarDelegate::OverwriteExistingFile() {
+  file_selected_callback_.Run(suggested_download_path_);
+}
+
+void ChromeDownloadManagerOverwriteInfoBarDelegate::CreateNewFile() {
+  content::BrowserThread::PostTask(
+      content::BrowserThread::FILE, FROM_HERE,
+      base::Bind(
+          &ChromeDownloadManagerOverwriteInfoBarDelegate::CreateNewFileInternal,
+          suggested_download_path_, file_selected_callback_));
+}
+
+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());
+}
+
+void ChromeDownloadManagerOverwriteInfoBarDelegate::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