| // Copyright (c) 2011 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 UI_VIEWS_IME_INPUT_METHOD_BASE_H_ |
| #define UI_VIEWS_IME_INPUT_METHOD_BASE_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "ui/views/focus/focus_manager.h" |
| #include "ui/views/ime/input_method.h" |
| #include "ui/views/ime/input_method_delegate.h" |
| |
| namespace gfx { |
| class Rect; |
| } |
| |
| namespace ui { |
| class KeyEvent; |
| } |
| |
| namespace views { |
| |
| // A helper that provides functionality shared by InputMethod implementations. |
| class VIEWS_EXPORT InputMethodBase : public InputMethod, |
| public FocusChangeListener { |
| public: |
| InputMethodBase(); |
| virtual ~InputMethodBase(); |
| |
| // Overridden from InputMethod. |
| virtual void SetDelegate(internal::InputMethodDelegate* delegate) OVERRIDE; |
| virtual void Init(Widget* widget) OVERRIDE; |
| virtual void OnTextInputTypeChanged(View* view) OVERRIDE; |
| virtual ui::TextInputClient* GetTextInputClient() const OVERRIDE; |
| virtual ui::TextInputType GetTextInputType() const OVERRIDE; |
| virtual bool IsMock() const OVERRIDE; |
| |
| // Overridden from FocusChangeListener. |
| virtual void OnWillChangeFocus(View* focused_before, View* focused) OVERRIDE; |
| virtual void OnDidChangeFocus(View* focused_before, View* focused) OVERRIDE; |
| |
| protected: |
| internal::InputMethodDelegate* delegate() const { return delegate_; } |
| Widget* widget() const { return widget_; } |
| View* GetFocusedView() const; |
| |
| // Returns true only if the View is focused and its Widget is active. |
| bool IsViewFocused(View* view) const; |
| |
| // Returns true if there is no focused text input client or its type is none. |
| bool IsTextInputTypeNone() const; |
| |
| // Calls the focused text input client's OnInputMethodChanged() method. |
| // This has no effect if the text input type is ui::TEXT_INPUT_TYPE_NONE. |
| void OnInputMethodChanged() const; |
| |
| // Convenience method to call delegate_->DispatchKeyEventPostIME(). |
| void DispatchKeyEventPostIME(const ui::KeyEvent& key) const; |
| |
| // Gets the current text input client's caret bounds in Widget's coordinates. |
| // Returns false if the current text input client doesn't support text input. |
| bool GetCaretBoundsInWidget(gfx::Rect* rect) const; |
| |
| // Removes any state installed on |widget_| and NULLs it out. Use if the |
| // widget is in a state such that it should no longer be used (such as when |
| // this is in its destructor). |
| void DetachFromWidget(); |
| |
| private: |
| internal::InputMethodDelegate* delegate_; |
| Widget* widget_; |
| |
| DISALLOW_COPY_AND_ASSIGN(InputMethodBase); |
| }; |
| |
| } // namespace views |
| |
| #endif // UI_VIEWS_IME_INPUT_METHOD_BASE_H_ |