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// Copyright 2015 The Chromium Authors
// 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 <string_view>
#include "ash/public/mojom/input_device_settings.mojom.h"
#include "base/containers/flat_map.h"
#include "base/containers/flat_set.h"
#include "base/time/time.h"
#include "components/exo/key_state.h"
namespace ui {
enum class DomCode : uint32_t;
}
namespace exo {
struct KeyboardModifiers;
class Surface;
// Handles events on keyboards in context-specific ways.
class KeyboardDelegate {
public:
virtual ~KeyboardDelegate() = default;
// 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 base::flat_map<PhysicalCode, base::flat_set<KeyState>>&
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 a key with
// |code| was pressed and false if it was released. Should return the serial
// number that will be used by the client to acknowledge the change in
// key state.
virtual uint32_t OnKeyboardKey(base::TimeTicks time_stamp,
ui::DomCode code,
bool pressed) = 0;
// Called when keyboard modifier state changed.
virtual void OnKeyboardModifiers(const KeyboardModifiers& modifiers) = 0;
// Called when key repeat settings are changed.
virtual void OnKeyRepeatSettingsChanged(bool enabled,
base::TimeDelta delay,
base::TimeDelta interval) = 0;
// Called when keyboard layout is updated.
virtual void OnKeyboardLayoutUpdated(std::string_view keymap) = 0;
};
} // namespace exo
#endif // COMPONENTS_EXO_KEYBOARD_DELEGATE_H_
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