[Android] Prompt with infobar on filename conflict

ui/shell_dialogs/select_file_dialog_android.cc

 // Copyright (c) 2012 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 "select_file_dialog_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
+#include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "jni/SelectFileDialog_jni.h"
 #include "ui/base/android/window_android.h"
 #include "ui/shell_dialogs/selected_file_info.h"
 
 using base::android::ConvertJavaStringToUTF8;
+using base::android::ConvertUTF8ToJavaString;
 
 namespace ui {
 
 // static
 SelectFileDialogImpl* SelectFileDialogImpl::Create(Listener* listener,
                                                    SelectFilePolicy* policy) {
   return new SelectFileDialogImpl(listener, policy);
 }
 
 void SelectFileDialogImpl::OnFileSelected(JNIEnv* env,
@@ skipping 54 matching lines @@
 }
 
 bool SelectFileDialogImpl::IsRunning(gfx::NativeWindow) const {
   return listener_;
 }
 
 void SelectFileDialogImpl::ListenerDestroyed() {
   listener_ = NULL;
 }
 
+ScopedJavaLocalRef<jstring> SelectFileDialogImpl::GetUniqueFilePath(
+    JNIEnv* env, jobject java_object, jstring path) {
+  base::FilePath file_path(ConvertJavaStringToUTF8(env, path));
+
+  ScopedJavaLocalRef<jstring> result;
+
+  // TODO(changwan): use GetUniquePath() instead once
+  // https://codereview.chromium.org/493363003/ lands.
+  int uniquifier =  base::GetUniquePathNumber(file_path,
+                                              base::FilePath::StringType());
+  if (uniquifier > 0) {
+    file_path = file_path.InsertBeforeExtensionASCII(
+        base::StringPrintf(" (%d)", uniquifier));
+    result = ConvertUTF8ToJavaString(env, file_path.value());
+    return ScopedJavaLocalRef<jstring>(result);
+  }
+  return result;
+}
+
 void SelectFileDialogImpl::SelectFileImpl(
     SelectFileDialog::Type type,
     const base::string16& title,
     const base::FilePath& default_path,
     const SelectFileDialog::FileTypeInfo* file_types,
     int file_type_index,
     const std::string& default_extension,
     gfx::NativeWindow owning_window,
     void* params) {
   JNIEnv* env = base::android::AttachCurrentThread();
 
+  if (type == SelectFileDialog::SELECT_SAVEAS_FILE) {
+      ScopedJavaLocalRef<jstring> jdefault_path =

[Ted C, 2014/09/19 22:31:40]

this block is indented 2 too many

[Changwan Ryu, 2014/09/22 14:02:37]

Done.

[Changwan Ryu, 2014/09/22 14:02:37]

Done.

+          ConvertUTF8ToJavaString(env, default_path.value());
+      Java_SelectFileDialog_showOverwriteDialog(
+          env, java_object_.obj(), jdefault_path.obj(),
+          owning_window->GetJavaObject().obj());
+      return;
+  }
+
   // The first element in the pair is a list of accepted types, the second
   // indicates whether the device's capture capabilities should be used.
   typedef std::pair<std::vector<base::string16>, bool> AcceptTypes;
   AcceptTypes accept_types = std::make_pair(std::vector<base::string16>(),
                                             false);
 
   if (params)
     accept_types = *(reinterpret_cast<AcceptTypes*>(params));
 
   ScopedJavaLocalRef<jobjectArray> accept_types_java =
@@ skipping 28 matching lines @@
   return false;
 }
 
 SelectFileDialog* CreateAndroidSelectFileDialog(
     SelectFileDialog::Listener* listener,
     SelectFilePolicy* policy) {
   return SelectFileDialogImpl::Create(listener, policy);
 }
 
 }  // namespace ui