Refactoring for InputMethodAuraLinux.

chrome/browser/ui/libgtk2ui/x11_input_method_context_impl_gtk2.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 CHROME_BROWSER_UI_LIBGTK2UI_X11_INPUT_METHOD_CONTEXT_IMPL_GTK2_H_
 #define CHROME_BROWSER_UI_LIBGTK2UI_X11_INPUT_METHOD_CONTEXT_IMPL_GTK2_H_
 
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/event_types.h"
 #include "base/gtest_prod_util.h"
 #include "base/strings/string16.h"
 #include "ui/base/glib/glib_integers.h"
 #include "ui/base/glib/glib_signal.h"
 #include "ui/base/ime/linux/linux_input_method_context.h"
 #include "ui/gfx/geometry/rect.h"
 
 typedef union _GdkEvent GdkEvent;
 typedef struct _GdkDrawable GdkWindow;
 typedef struct _GtkIMContext GtkIMContext;
 
 namespace libgtk2ui {
 
 // An implementation of LinuxInputMethodContext which is based on X11 event loop
 // and uses GtkIMContext(gtk-immodule) as a bridge from/to underlying IMEs.
 class X11InputMethodContextImplGtk2 : public ui::LinuxInputMethodContext {
  public:
-  explicit X11InputMethodContextImplGtk2(
-      ui::LinuxInputMethodContextDelegate* delegate);
+  X11InputMethodContextImplGtk2(ui::LinuxInputMethodContextDelegate* delegate,
+                                bool is_simple);
   ~X11InputMethodContextImplGtk2() override;
 
   // Overriden from ui::LinuxInputMethodContext
   bool DispatchKeyEvent(const ui::KeyEvent& key_event) override;
+  void SetCursorLocation(const gfx::Rect& rect) override;
   void Reset() override;
-  void OnTextInputTypeChanged(ui::TextInputType text_input_type) override;
-  void OnCaretBoundsChanged(const gfx::Rect& caret_bounds) override;
+  void Focus() override;
+  void Blur() override;
 
  private:
   // Resets the cache of X modifier keycodes.
   // TODO(yukishiino): We should call this method whenever X keyboard mapping
   // changes, for example when a user switched to another keyboard layout.
   void ResetXModifierKeycodesCache();
 
   // Constructs a GdkEventKey from a XKeyEvent and returns it.  Otherwise,
   // returns NULL.  The returned GdkEvent must be freed by gdk_event_free.
   GdkEvent* GdkEventFromNativeEvent(const base::NativeEvent& native_event);
@@ skipping 15 matching lines @@
   CHROMEG_CALLBACK_0(X11InputMethodContextImplGtk2, void, OnPreeditChanged,
                      GtkIMContext*);
   CHROMEG_CALLBACK_0(X11InputMethodContextImplGtk2, void, OnPreeditEnd,
                      GtkIMContext*);
   CHROMEG_CALLBACK_0(X11InputMethodContextImplGtk2, void, OnPreeditStart,
                      GtkIMContext*);
 
   // A set of callback functions.  Must not be NULL.
   ui::LinuxInputMethodContextDelegate* delegate_;
 
-  // IME's input context used for TEXT_INPUT_TYPE_NONE and
-  // TEXT_INPUT_TYPE_PASSWORD.
-  GtkIMContext* gtk_context_simple_;
-  // IME's input context used for the other text input types.
-  GtkIMContext* gtk_multicontext_;
-
-  // An alias to |gtk_context_simple_| or |gtk_multicontext_| depending on the
-  // text input type.  Can be NULL when it's not focused.
+  // IME's input GTK context.
   GtkIMContext* gtk_context_;
 
-  // Last set client window.
   GdkWindow* gdk_last_set_client_window_;
 
   // Last known caret bounds relative to the screen coordinates.
   gfx::Rect last_caret_bounds_;
 
   // A set of hardware keycodes of modifier keys.
   base::hash_set<unsigned int> modifier_keycodes_;
 
   // A list of keycodes of each modifier key.
   std::vector<int> meta_keycodes_;
   std::vector<int> super_keycodes_;
   std::vector<int> hyper_keycodes_;
 
-  // The helper class to trap GTK+'s "commit" signal for direct input key
-  // events.
-  //
-  // gtk_im_context_filter_keypress() emits "commit" signal in order to insert
-  // a character which is not actually processed by a IME.  This behavior seems,
-  // in Javascript world, that a keydown event with keycode = VKEY_PROCESSKEY
-  // (= 229) is fired.  So we have to trap such "commit" signal for direct input
-  // key events.  This class helps to trap such events.
-  class GtkCommitSignalTrap {
-   public:
-    GtkCommitSignalTrap();
-
-    // Enables the trap which monitors a direct input key event of |keyval|.
-    void StartTrap(guint keyval);
-
-    // Disables the trap.
-    void StopTrap();
-
-    // Checks if the committed |text| has come from a direct input key event,
-    // and returns true in that case.  Once it's trapped, IsSignalCaught()
-    // returns true.
-    // Must be called at most once between StartTrap() and StopTrap().
-    bool Trap(const base::string16& text);
-
-    // Returns true if a direct input key event is detected.
-    bool IsSignalCaught() const { return is_signal_caught_; }
-
-   private:
-    bool is_trap_enabled_;
-    guint gdk_event_key_keyval_;
-    bool is_signal_caught_;
-
-    DISALLOW_COPY_AND_ASSIGN(GtkCommitSignalTrap);
-  };
-
-  GtkCommitSignalTrap commit_signal_trap_;
-
-  FRIEND_TEST_ALL_PREFIXES(X11InputMethodContextImplGtk2FriendTest,
-                           GtkCommitSignalTrap);
-
   DISALLOW_COPY_AND_ASSIGN(X11InputMethodContextImplGtk2);
 };
 
 }  // namespace libgtk2ui
 
 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_X11_INPUT_METHOD_CONTEXT_IMPL_GTK2_H_