| // Copyright 2015 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 COMPONENTS_EXO_KEYBOARD_DELEGATE_H_ |
| #define COMPONENTS_EXO_KEYBOARD_DELEGATE_H_ |
| |
| #include <vector> |
| |
| #include "base/time/time.h" |
| |
| namespace ui { |
| enum class DomCode; |
| } |
| |
| namespace exo { |
| class Keyboard; |
| class Surface; |
| |
| // Handles events on keyboards in context-specific ways. |
| class KeyboardDelegate { |
| public: |
| // Called at the top of the keyboard's destructor, to give observers a |
| // chance to remove themselves. |
| virtual void OnKeyboardDestroying(Keyboard* keyboard) = 0; |
| |
| // This should return true if |surface| is a valid target for this keyboard. |
| // E.g. the surface is owned by the same client as the keyboard. |
| virtual bool CanAcceptKeyboardEventsForSurface(Surface* surface) const = 0; |
| |
| // Called when keyboard focus enters a new valid target surface. |
| virtual void OnKeyboardEnter( |
| Surface* surface, |
| const std::vector<ui::DomCode>& pressed_keys) = 0; |
| |
| // Called when keyboard focus leaves a valid target surface. |
| virtual void OnKeyboardLeave(Surface* surface) = 0; |
| |
| // Called when keyboard key state changed. |pressed| is true when |key| |
| // was pressed and false if it was released. |
| virtual void OnKeyboardKey(base::TimeTicks time_stamp, |
| ui::DomCode key, |
| bool pressed) = 0; |
| |
| // Called when keyboard modifier state changed. |
| virtual void OnKeyboardModifiers(int modifier_flags) = 0; |
| |
| protected: |
| virtual ~KeyboardDelegate() {} |
| }; |
| |
| } // namespace exo |
| |
| #endif // COMPONENTS_EXO_KEYBOARD_DELEGATE_H_ |