Revert of Moves code from chromeos/ime to ui/base/ime/chromeos.

chromeos/ime/component_extension_ime_manager.h

+// Copyright 2013 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 CHROMEOS_IME_COMPONENT_EXTENSION_IME_MANAGER_H_
+#define CHROMEOS_IME_COMPONENT_EXTENSION_IME_MANAGER_H_
+
+#include <map>
+#include <set>
+
+#include "base/files/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/observer_list.h"
+#include "chromeos/chromeos_export.h"
+#include "chromeos/ime/input_method_descriptor.h"
+
+class Profile;
+
+namespace chromeos {
+
+// Represents an engine in component extension IME.
+struct CHROMEOS_EXPORT ComponentExtensionEngine {
+  ComponentExtensionEngine();
+  ~ComponentExtensionEngine();
+  std::string engine_id;  // The engine id.
+  std::string display_name;  // The display name.
+  std::string indicator;  // The indicator text.
+  std::vector<std::string> language_codes;  // The engine's language(ex. "en").
+  std::string description;  // The engine description.
+  std::vector<std::string> layouts;  // The list of keyboard layout of engine.
+  GURL options_page_url; // an URL to option page.
+  GURL input_view_url; // an URL to input view page.
+};
+
+// Represents a component extension IME.
+struct CHROMEOS_EXPORT ComponentExtensionIME {
+  ComponentExtensionIME();
+  ~ComponentExtensionIME();
+  std::string id;  // extension id.
+  std::string manifest;  // the contents of manifest.json
+  std::string description;  // description of extension.
+  GURL options_page_url; // an URL to option page.
+  base::FilePath path;
+  std::vector<ComponentExtensionEngine> engines;
+};
+
+// Provides an interface to list/load/unload for component extension IME.
+class CHROMEOS_EXPORT ComponentExtensionIMEManagerDelegate {
+ public:
+  ComponentExtensionIMEManagerDelegate();
+  virtual ~ComponentExtensionIMEManagerDelegate();
+
+  // Lists installed component extension IMEs.
+  virtual std::vector<ComponentExtensionIME> ListIME() = 0;
+
+  // Loads component extension IME associated with |extension_id|.
+  // Returns false if it fails, otherwise returns true.
+  virtual void Load(Profile* profile,
+                    const std::string& extension_id,
+                    const std::string& manifest,
+                    const base::FilePath& path) = 0;
+
+  // Unloads component extension IME associated with |extension_id|.
+  virtual void Unload(Profile* profile,
+                      const std::string& extension_id,
+                      const base::FilePath& path) = 0;
+};
+
+// This class manages component extension input method.
+class CHROMEOS_EXPORT ComponentExtensionIMEManager {
+ public:
+  ComponentExtensionIMEManager();
+  virtual ~ComponentExtensionIMEManager();
+
+  // Initializes component extension manager. This function create internal
+  // mapping between input method id and engine components. This function must
+  // be called before using any other function.
+  void Initialize(scoped_ptr<ComponentExtensionIMEManagerDelegate> delegate);
+
+  // Loads |input_method_id| component extension IME. This function returns true
+  // on success. This function is safe to call multiple times. Returns false if
+  // already corresponding component extension is loaded.
+  bool LoadComponentExtensionIME(Profile* profile,
+                                 const std::string& input_method_id);
+
+  // Unloads |input_method_id| component extension IME. This function returns
+  // true on success. This function is safe to call multiple times. Returns
+  // false if already corresponding component extension is unloaded.
+  bool UnloadComponentExtensionIME(Profile* profile,
+                                   const std::string& input_method_id);
+
+  // Returns true if |input_method_id| is whitelisted component extension input
+  // method.
+  bool IsWhitelisted(const std::string& input_method_id);
+
+  // Returns true if |extension_id| is whitelisted component extension.
+  bool IsWhitelistedExtension(const std::string& extension_id);
+
+  // Returns all IME as InputMethodDescriptors.
+  input_method::InputMethodDescriptors GetAllIMEAsInputMethodDescriptor();
+
+  // Returns all XKB keyboard IME as InputMethodDescriptors.
+  input_method::InputMethodDescriptors GetXkbIMEAsInputMethodDescriptor();
+
+ private:
+  // Finds ComponentExtensionIME and EngineDescription associated with
+  // |input_method_id|. This function retruns true if it is found, otherwise
+  // returns false. |out_extension| and |out_engine| can be NULL.
+  bool FindEngineEntry(const std::string& input_method_id,
+                       ComponentExtensionIME* out_extension);
+
+  bool IsInLoginLayoutWhitelist(const std::vector<std::string>& layouts);
+
+  scoped_ptr<ComponentExtensionIMEManagerDelegate> delegate_;
+
+  // The map of extension_id to ComponentExtensionIME instance.
+  // It's filled by Initialize() method and never changed during runtime.
+  std::map<std::string, ComponentExtensionIME> component_extension_imes_;
+
+  // For quick check the validity of a given input method id.
+  // It's filled by Initialize() method and never changed during runtime.
+  std::set<std::string> input_method_id_set_;
+
+  std::set<std::string> login_layout_set_;
+
+  DISALLOW_COPY_AND_ASSIGN(ComponentExtensionIMEManager);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_IME_COMPONENT_EXTENSION_IME_MANAGER_H_