classDiagram
    class TerminalInput {
        +TerminalInput()
        +UseAlternateScreenBuffer() void
        +UseMainScreenBuffer() void
        +SetInputMode(Mode mode, bool enabled) void
        +GetInputMode(Mode mode) bool
        +ResetInputModes() void
        +ForceDisableWin32InputMode(bool win32InputMode) void
        +ForceDisableKittyKeyboardProtocol(bool disable) void
        +SetKittyKeyboardProtocol(uint8_t flags, KittyKeyboardProtocolMode mode) void
        +GetKittyFlags() uint8_t
        +PushKittyFlags(uint8_t flags) void
        +PopKittyFlags(size_t count) void
        +ResetKittyKeyboardProtocols() void
        +HandleKey(INPUT_RECORD event) OutputType
        +HandleFocus(bool focused) OutputType
        +_makeWin32Output(KEY_EVENT_RECORD key) OutputType
        -_encodeKitty(KeyboardHelper kbd, EncodingHelper enc, SanitizedKeyEvent key) bool
        -_encodeRegular(EncodingHelper enc, SanitizedKeyEvent key) void
        -_formatEncodingHelper(EncodingHelper enc, wstring seq) bool
        -_formatFallback(KeyboardHelper kbd, EncodingHelper enc, SanitizedKeyEvent key, wstring seq) void
        -_stringPushCodepoint(wstring str, uint32_t cp) void
        -_codepointToLower(uint32_t cp) uint32_t
        -_trackControlKeyState(KEY_EVENT_RECORD key) DWORD
        -_initKeyboardMap() void
        -_leadingSurrogate wchar_t
        -_lastVirtualKeyCode optional~WORD~
        -_lastControlKeyState DWORD
        -_lastLeftCtrlTime uint64_t
        -_lastRightAltTime uint64_t
        -_inputMode enumset~Mode~
        -_forceDisableWin32InputMode bool
        -_inAlternateBuffer bool
        -KittyStackMaxSize size_t
        -_forceDisableKittyKeyboardProtocol bool
        -_kittyFlags uint8_t
        -_kittyMainStack vector~uint8_t~
        -_kittyAltStack vector~uint8_t~
        -_csi wstring_view
        -_ss3 wstring_view
        -_focusInSequence wstring_view
        -_focusOutSequence wstring_view
    }

    class KittyKeyboardProtocolFlags {
        <<struct>>
        +None uint8_t
        +DisambiguateEscapeCodes uint8_t
        +ReportEventTypes uint8_t
        +ReportAlternateKeys uint8_t
        +ReportAllKeysAsEscapeCodes uint8_t
        +ReportAssociatedText uint8_t
        +All uint8_t
    }

    class KittyKeyboardProtocolMode {
        <<enum>>
        Replace
        Set
        Reset
    }

    class SanitizedKeyEvent {
        <<struct>>
        +virtualKey uint16_t
        +scanCode uint16_t
        +codepoint uint32_t
        +controlKeyState uint32_t
        +leftCtrlIsReallyPressed bool
        +keyDown bool
        +keyRepeat bool
        +anyAltPressed() bool
        +bothAltPressed() bool
        +rightAltPressed() bool
        +bothCtrlPressed() bool
        +altGrPressed() bool
    }

    class KeyboardHelper {
        <<struct>>
        +KeyboardHelper()
        +getUnmodifiedKeyboardKey(SanitizedKeyEvent key) uint32_t
        +getKittyBaseKey(SanitizedKeyEvent key) uint32_t
        +getKittyShiftedKey(SanitizedKeyEvent key) uint32_t
        +getKittyUSBaseKey(SanitizedKeyEvent key) uint32_t
        -getKeyboardKey(UINT vkey, DWORD controlKeyState, HKL hkl) uint32_t
        -init() void
        -initSlow() void
        -_initialized bool
        -_keyboardLayout HKL
        -_keyboardState uint8_t[256]
    }

    class EncodingHelper {
        <<struct>>
        +EncodingHelper()
        +shiftPressed() bool
        +altPressed() bool
        +ctrlPressed() bool
        +csiUnicodeKeyCode uint32_t
        +csiAltKeyCodeShifted uint32_t
        +csiAltKeyCodeBase uint32_t
        +csiModifier uint32_t
        +csiEventType uint32_t
        +csiTextAsCodepoint uint32_t
        +csiFinal wchar_t
        +ss3Final wchar_t
        +altPrefix bool
        +plain wstring_view
    }

    class CodepointBuffer {
        <<struct>>
        +CodepointBuffer()
        +CodepointBuffer(uint32_t cp)
        +convertLowercase() void
        +asSingleCodepoint() uint32_t
        +buf wchar_t[4]
        +len int
    }

    class ITermDispatch {
        <<interface>>
        +SetKittyKeyboardProtocol(VTParameter flags, VTParameter mode) void
        +QueryKittyKeyboardProtocol() void
        +PushKittyKeyboardProtocol(VTParameter flags) void
        +PopKittyKeyboardProtocol(VTParameter count) void
    }

    class AdaptDispatch {
        +SetKittyKeyboardProtocol(VTParameter flags, VTParameter mode) void
        +QueryKittyKeyboardProtocol() void
        +PushKittyKeyboardProtocol(VTParameter flags) void
        +PopKittyKeyboardProtocol(VTParameter count) void
        -_terminalInput TerminalInput
    }

    TerminalInput *-- KittyKeyboardProtocolFlags
    TerminalInput *-- KittyKeyboardProtocolMode
    TerminalInput *-- SanitizedKeyEvent
    TerminalInput *-- KeyboardHelper
    TerminalInput *-- EncodingHelper
    TerminalInput *-- CodepointBuffer

    AdaptDispatch ..|> ITermDispatch
    AdaptDispatch o--> TerminalInput