1 // Copyright (c) 2012 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_VIEWS_IME_INPUT_METHOD_BRIDGE_H_ 6 #define UI_VIEWS_IME_INPUT_METHOD_BRIDGE_H_ 7 8 #include <string> 9 10 #include "base/basictypes.h" 11 #include "base/compiler_specific.h" 12 #include "ui/base/ime/text_input_client.h" 13 #include "ui/gfx/rect.h" 14 #include "ui/views/ime/input_method_base.h" 15 16 namespace ui { 17 class InputMethod; 18 } // namespace ui 19 20 namespace views { 21 22 class View; 23 24 // A "bridge" InputMethod implementation for views top-level widgets, which just 25 // sends/receives IME related events to/from a system-wide ui::InputMethod 26 // object. 27 class InputMethodBridge : public InputMethodBase, 28 public ui::TextInputClient { 29 public: 30 // |shared_input_method| indicates if |host| is shared among other top level 31 // widgets. 32 InputMethodBridge(internal::InputMethodDelegate* delegate, 33 ui::InputMethod* host, 34 bool shared_input_method); 35 virtual ~InputMethodBridge(); 36 37 // Overridden from InputMethod: 38 virtual void OnFocus() OVERRIDE; 39 virtual void OnBlur() OVERRIDE; 40 virtual bool OnUntranslatedIMEMessage(const base::NativeEvent& event, 41 NativeEventResult* result) OVERRIDE; 42 virtual void DispatchKeyEvent(const ui::KeyEvent& key) OVERRIDE; 43 virtual void OnTextInputTypeChanged(View* view) OVERRIDE; 44 virtual void OnCaretBoundsChanged(View* view) OVERRIDE; 45 virtual void CancelComposition(View* view) OVERRIDE; 46 virtual void OnInputLocaleChanged() OVERRIDE; 47 virtual std::string GetInputLocale() OVERRIDE; 48 virtual base::i18n::TextDirection GetInputTextDirection() OVERRIDE; 49 virtual bool IsActive() OVERRIDE; 50 virtual bool IsCandidatePopupOpen() const OVERRIDE; 51 52 // Overridden from TextInputClient: 53 virtual void SetCompositionText( 54 const ui::CompositionText& composition) OVERRIDE; 55 virtual void ConfirmCompositionText() OVERRIDE; 56 virtual void ClearCompositionText() OVERRIDE; 57 virtual void InsertText(const string16& text) OVERRIDE; 58 virtual void InsertChar(char16 ch, int flags) OVERRIDE; 59 virtual gfx::NativeWindow GetAttachedWindow() const OVERRIDE; 60 virtual ui::TextInputType GetTextInputType() const OVERRIDE; 61 virtual ui::TextInputMode GetTextInputMode() const OVERRIDE; 62 virtual bool CanComposeInline() const OVERRIDE; 63 virtual gfx::Rect GetCaretBounds() OVERRIDE; 64 virtual bool GetCompositionCharacterBounds(uint32 index, 65 gfx::Rect* rect) OVERRIDE; 66 virtual bool HasCompositionText() OVERRIDE; 67 virtual bool GetTextRange(ui::Range* range) OVERRIDE; 68 virtual bool GetCompositionTextRange(ui::Range* range) OVERRIDE; 69 virtual bool GetSelectionRange(ui::Range* range) OVERRIDE; 70 virtual bool SetSelectionRange(const ui::Range& range) OVERRIDE; 71 virtual bool DeleteRange(const ui::Range& range) OVERRIDE; 72 virtual bool GetTextFromRange( 73 const ui::Range& range, string16* text) OVERRIDE; 74 virtual void OnInputMethodChanged() OVERRIDE; 75 virtual bool ChangeTextDirectionAndLayoutAlignment( 76 base::i18n::TextDirection direction) OVERRIDE; 77 virtual void ExtendSelectionAndDelete(size_t before, size_t after) OVERRIDE; 78 virtual void EnsureCaretInRect(const gfx::Rect& rect) OVERRIDE; 79 80 // Overridden from FocusChangeListener. 81 virtual void OnWillChangeFocus(View* focused_before, View* focused) OVERRIDE; 82 virtual void OnDidChangeFocus(View* focused_before, View* focused) OVERRIDE; 83 84 ui::InputMethod* GetHostInputMethod() const; 85 86 private: 87 void UpdateViewFocusState(); 88 89 ui::InputMethod* const host_; 90 91 const bool shared_input_method_; 92 93 bool context_focused_; 94 95 DISALLOW_COPY_AND_ASSIGN(InputMethodBridge); 96 }; 97 98 } // namespace views 99 100 #endif // UI_VIEWS_IME_INPUT_METHOD_BRIDGE_H_ 101
