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   void Init(bool focused) override;
  29   bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
  30                                 NativeEventResult* result) override;
  31   bool DispatchKeyEvent(const ui::KeyEvent& event) override;
  32   void OnTextInputTypeChanged(const TextInputClient* client) override;
  33   void OnCaretBoundsChanged(const TextInputClient* client) override;
  34   void CancelComposition(const TextInputClient* client) override;
  35   void OnInputLocaleChanged() override;
  36   std::string GetInputLocale() override;
  37   bool IsActive() override;
  38   bool IsCandidatePopupOpen() const override;
  39   void OnFocus() override;
  40   void OnBlur() override;
  41
  42   // Overriden from ui::LinuxInputMethodContextDelegate
  43   void OnCommit(const base::string16& text) override;
  44   void OnPreeditChanged(const CompositionText& composition_text) override;
  45   void OnPreeditEnd() override;
  46   void OnPreeditStart() override{};
  47
  48  protected:
  49   // Overridden from InputMethodBase.
  50   void OnWillChangeFocusedClient(TextInputClient* focused_before,
  51                                  TextInputClient* focused) override;
  52   void OnDidChangeFocusedClient(TextInputClient* focused_before,
  53                                 TextInputClient* focused) override;
  54
  55  private:
  56   bool HasInputMethodResult();
  57   bool NeedInsertChar() const;
  58   void SendFakeProcessKeyEvent(int flags) const;
  59   void ConfirmCompositionText();
  60   void UpdateContextFocusState();
  61   void ResetContext();
  62
  63   scoped_ptr<LinuxInputMethodContext> context_;
  64   scoped_ptr<LinuxInputMethodContext> context_simple_;
  65
  66   base::string16 result_text_;
  67
  68   ui::CompositionText composition_;
  69
  70   // The current text input type used to indicates if |context_| and
  71   // |context_simple_| are focused or not.
  72   TextInputType text_input_type_;
  73
  74   // Indicates if currently in sync mode when handling a key event.
  75   // This is used in OnXXX callbacks from GTK IM module.
  76   bool is_sync_mode_;
  77
  78   // Indicates if the composition text is changed or deleted.
  79   bool composition_changed_;
  80
  81   // If it's true then all input method result received before the next key
  82   // event will be discarded.
  83   bool suppress_next_result_;
  84
  85   DISALLOW_COPY_AND_ASSIGN(InputMethodAuraLinux);
  86 };
  87
  88 }  // namespace ui
  89
  90 #endif  // UI_BASE_IME_INPUT_METHOD_AURALINUX_H_