ui/base/ime/input_method_auralinux.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_INPUT_METHOD_AURALINUX_H_
   6 #define UI_BASE_IME_INPUT_METHOD_AURALINUX_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "ui/base/ime/composition_text.h"
  10 #include "ui/base/ime/input_method_base.h"
  11 #include "ui/base/ime/linux/linux_input_method_context.h"
  12
  13 namespace ui {
  14
  15 // A ui::InputMethod implementation for Aura on Linux platforms. The
  16 // implementation details are separated to ui::LinuxInputMethodContext
  17 // interface.
  18 class UI_BASE_IME_EXPORT InputMethodAuraLinux
  19     : public InputMethodBase,
  20       public LinuxInputMethodContextDelegate {
  21  public:
  22   explicit InputMethodAuraLinux(internal::InputMethodDelegate* delegate);
  23   ~InputMethodAuraLinux() override;
  24
  25   LinuxInputMethodContext* GetContextForTesting(bool is_simple);
  26
  27   // Overriden from InputMethod.
  28   bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
  29                                 NativeEventResult* result) override;
  30   bool DispatchKeyEvent(const ui::KeyEvent& event) override;
  31   void OnTextInputTypeChanged(const TextInputClient* client) override;
  32   void OnCaretBoundsChanged(const TextInputClient* client) override;
  33   void CancelComposition(const TextInputClient* client) override;
  34   void OnInputLocaleChanged() override;
  35   std::string GetInputLocale() override;
  36   bool IsActive() override;
  37   bool IsCandidatePopupOpen() const override;
  38   void OnFocus() override;
  39   void OnBlur() override;
  40
  41   // Overriden from ui::LinuxInputMethodContextDelegate
  42   void OnCommit(const base::string16& text) override;
  43   void OnPreeditChanged(const CompositionText& composition_text) override;
  44   void OnPreeditEnd() override;
  45   void OnPreeditStart() override{};
  46
  47  protected:
  48   // Overridden from InputMethodBase.
  49   void OnWillChangeFocusedClient(TextInputClient* focused_before,
  50                                  TextInputClient* focused) override;
  51   void OnDidChangeFocusedClient(TextInputClient* focused_before,
  52                                 TextInputClient* focused) override;
  53
  54  private:
  55   bool HasInputMethodResult();
  56   bool NeedInsertChar() const;
  57   void SendFakeProcessKeyEvent(int flags) const;
  58   void ConfirmCompositionText();
  59   void UpdateContextFocusState();
  60   void ResetContext();
  61
  62   scoped_ptr<LinuxInputMethodContext> context_;
  63   scoped_ptr<LinuxInputMethodContext> context_simple_;
  64
  65   base::string16 result_text_;
  66
  67   ui::CompositionText composition_;
  68
  69   // The current text input type used to indicates if |context_| and
  70   // |context_simple_| are focused or not.
  71   TextInputType text_input_type_;
  72
  73   // Indicates if currently in sync mode when handling a key event.
  74   // This is used in OnXXX callbacks from GTK IM module.
  75   bool is_sync_mode_;
  76
  77   // Indicates if the composition text is changed or deleted.
  78   bool composition_changed_;
  79
  80   // If it's true then all input method result received before the next key
  81   // event will be discarded.
  82   bool suppress_next_result_;
  83
  84   DISALLOW_COPY_AND_ASSIGN(InputMethodAuraLinux);
  85 };
  86
  87 }  // namespace ui
  88
  89 #endif  // UI_BASE_IME_INPUT_METHOD_AURALINUX_H_