Initialize IMF with a whitelist of input methods so that login screen doesn't need to wait for comp…

chrome/browser/chromeos/input_method/input_method_manager_impl.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 "chrome/browser/chromeos/input_method/input_method_manager_impl.h"
 
 #include <algorithm>  // std::find
 
 #include "ash/ime/input_method_menu_item.h"
 #include "ash/ime/input_method_menu_manager.h"
@@ skipping 99 matching lines @@
     }
   }
 }
 
 scoped_ptr<InputMethodDescriptors>
 InputMethodManagerImpl::GetSupportedInputMethods() const {
   scoped_ptr<InputMethodDescriptors> whitelist_imes =
       whitelist_.GetSupportedInputMethods();
   if (!extension_ime_util::UseWrappedExtensionKeyboardLayouts())
     return whitelist_imes.Pass();
-  return scoped_ptr<InputMethodDescriptors>(new InputMethodDescriptors).Pass();
+
+  InputMethodDescriptors* input_methods = new InputMethodDescriptors;
+  if (!component_extension_ime_manager_->IsInitialized()) {
+    for (size_t i = 0; i < whitelist_imes->size(); ++i) {
+      const InputMethodDescriptor& ime = (*whitelist_imes.get())[i];
+      input_methods->push_back(InputMethodDescriptor(
+          extension_ime_util::GetInputMethodIDByKeyboardLayout(
+              ime.id()),
+          ime.name(), ime.indicator(), ime.keyboard_layouts(),
+          ime.language_codes(), ime.is_login_keyboard(),
+          ime.options_page_url(), ime.input_view_url()));
+    }
+  }
+  return scoped_ptr<InputMethodDescriptors>(input_methods).Pass();
 }
 
 scoped_ptr<InputMethodDescriptors>
 InputMethodManagerImpl::GetActiveInputMethods() const {
   scoped_ptr<InputMethodDescriptors> result(new InputMethodDescriptors);
   // Build the active input method descriptors from the active input
   // methods cache |active_input_method_ids_|.
   for (size_t i = 0; i < active_input_method_ids_.size(); ++i) {
     const std::string& input_method_id = active_input_method_ids_[i];
     const InputMethodDescriptor* descriptor =
@@ skipping 191 matching lines @@
     DCHECK(!input_methods->empty());
     input_method_id_to_switch = input_methods->at(0).id();
     if (!input_method_id.empty()) {
       DVLOG(1) << "Can't change the current input method to "
                << input_method_id << " since the engine is not enabled. "
                << "Switch to " << input_method_id_to_switch << " instead.";
     }
   }
 
   if (!component_extension_ime_manager_->IsInitialized() &&
-      (!InputMethodUtil::IsKeyboardLayout(input_method_id_to_switch) ||
-       extension_ime_util::IsKeyboardLayoutExtension(
-           input_method_id_to_switch))) {
+      !InputMethodUtil::IsKeyboardLayout(input_method_id_to_switch)) {
     // We can't change input method before the initialization of
     // component extension ime manager.  ChangeInputMethod will be
     // called with |pending_input_method_| when the initialization is
     // done.
     pending_input_method_ = input_method_id_to_switch;
     return false;
   }
   pending_input_method_.clear();
 
   // Hide candidate window and info list.
@@ skipping 509 matching lines @@
       CandidateWindowController::CreateCandidateWindowController());
   candidate_window_controller_->AddObserver(this);
 }
 
 Profile* InputMethodManagerImpl::GetProfile() const {
   return ProfileManager::GetActiveUserProfile();
 }
 
 }  // namespace input_method
 }  // namespace chromeos