ui/base/ime/linux/linux_input_method_context_factory.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_BASE_IME_LINUX_LINUX_INPUT_METHOD_CONTEXT_FACTORY_H_
   6 #define UI_BASE_IME_LINUX_LINUX_INPUT_METHOD_CONTEXT_FACTORY_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "ui/base/ui_base_export.h"
  10
  11 namespace ui {
  12
  13 class LinuxInputMethodContext;
  14 class LinuxInputMethodContextDelegate;
  15
  16 // An interface that lets different Linux platforms override the
  17 // CreateInputMethodContext function declared here to return native input method
  18 // contexts.
  19 class UI_BASE_EXPORT LinuxInputMethodContextFactory {
  20  public:
  21   // Returns the current active factory or NULL.
  22   static const LinuxInputMethodContextFactory* instance();
  23
  24   // Sets the dynamically loaded singleton that creates an input method context.
  25   // This pointer is not owned, and if this method is called a second time,
  26   // the first instance is not deleted.
  27   static void SetInstance(const LinuxInputMethodContextFactory* instance);
  28
  29   virtual ~LinuxInputMethodContextFactory() {}
  30
  31   // Returns a native input method context.
  32   virtual scoped_ptr<LinuxInputMethodContext> CreateInputMethodContext(
  33       LinuxInputMethodContextDelegate* delegate) const = 0;
  34 };
  35
  36 }  // namespace ui
  37
  38 #endif  // UI_BASE_IME_LINUX_LINUX_INPUT_METHOD_CONTEXT_FACTORY_H_