private void ChangedString(string text, InlineKeyboardState state)
{
if (_encoding == Encoding.UTF8)
{
if (_useChangedStringV2)
{
_interactiveSession.Push(InlineResponses.ChangedStringUtf8V2(text, state));
}
else
{
_interactiveSession.Push(InlineResponses.ChangedStringUtf8(text, state));
}
}
else
{
if (_useChangedStringV2)
{
_interactiveSession.Push(InlineResponses.ChangedStringV2(text, state));
}
else
{
_interactiveSession.Push(InlineResponses.ChangedString(text, state));
}
}
}
public ResultCode Start(AppletSession normalSession,
AppletSession interactiveSession)
{
_normalSession = normalSession;
_interactiveSession = interactiveSession;
_interactiveSession.DataAvailable += OnInteractiveData;
_alreadyShown = false;
_useChangedStringV2 = false;
var launchParams = _normalSession.Pop();
var keyboardConfig = _normalSession.Pop();
if (keyboardConfig.Length == Marshal.SizeOf <SoftwareKeyboardInitialize>())
{
// Initialize the keyboard applet in background mode.
_isBackground = true;
_keyboardBackgroundInitialize = ReadStruct <SoftwareKeyboardInitialize>(keyboardConfig);
_backgroundState = InlineKeyboardState.Uninitialized;
return(ResultCode.Success);
}
else
{
// Initialize the keyboard applet in foreground mode.
_isBackground = false;
if (keyboardConfig.Length < Marshal.SizeOf <SoftwareKeyboardConfig>())
{
Logger.Error?.Print(LogClass.ServiceAm, $"SoftwareKeyboardConfig size mismatch. Expected {Marshal.SizeOf<SoftwareKeyboardConfig>():x}. Got {keyboardConfig.Length:x}");
}
else
{
_keyboardForegroundConfig = ReadStruct <SoftwareKeyboardConfig>(keyboardConfig);
}
if (!_normalSession.TryPop(out _transferMemory))
{
Logger.Error?.Print(LogClass.ServiceAm, "SwKbd Transfer Memory is null");
}
if (_keyboardForegroundConfig.UseUtf8)
{
_encoding = Encoding.UTF8;
}
_foregroundState = SoftwareKeyboardState.Ready;
ExecuteForegroundKeyboard();
return(ResultCode.Success);
}
}
private void PushUpdatedState(string text, int cursorBegin, KeyboardResult result)
{
_lastResult = result;
_textValue = text;
bool cancel = result == KeyboardResult.Cancel;
bool accept = result == KeyboardResult.Accept;
if (!IsKeyboardActive())
{
// Keyboard is not active.
return;
}
if (accept == false && cancel == false)
{
Logger.Debug?.Print(LogClass.ServiceAm, $"Updating keyboard text to {text} and cursor position to {cursorBegin}");
PushChangedString(text, (uint)cursorBegin, _backgroundState);
}
else
{
// Disable the frontend.
DeactivateFrontend();
// The 'Complete' state indicates the Calc request has been fulfilled by the applet.
_backgroundState = InlineKeyboardState.Disappearing;
if (accept)
{
Logger.Debug?.Print(LogClass.ServiceAm, $"Sending keyboard OK with text {text}");
DecidedEnter(text, _backgroundState);
}
else if (cancel)
{
Logger.Debug?.Print(LogClass.ServiceAm, "Sending keyboard Cancel");
DecidedCancel(_backgroundState);
}
_interactiveSession.Push(InlineResponses.Default(_backgroundState));
Logger.Debug?.Print(LogClass.ServiceAm, $"Resetting state of the keyboard to {_backgroundState}");
// Set the state of the applet to 'Initialized' as it is the only known state so far
// that does not soft-lock the keyboard after use.
_backgroundState = InlineKeyboardState.Initialized;
_interactiveSession.Push(InlineResponses.Default(_backgroundState));
}
}
private void DecidedEnter(string text, InlineKeyboardState state)
{
if (_encoding == Encoding.UTF8)
{
_interactiveSession.Push(InlineResponses.DecidedEnterUtf8(text, state));
}
else
{
_interactiveSession.Push(InlineResponses.DecidedEnter(text, state));
}
}
public static byte[] Default(InlineKeyboardState state)
{
uint resSize = 2 * sizeof(uint);
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.Default, writer);
return(stream.ToArray());
}
}
public static byte[] UnsetCustomizedDictionaries(InlineKeyboardState state)
{
uint resSize = 2 * sizeof(uint);
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.UnsetCustomizedDictionaries, writer);
return(stream.ToArray());
}
}
public static byte[] DecidedEnterUtf8(string text, InlineKeyboardState state)
{
uint resSize = 3 * sizeof(uint) + MaxStrLenUTF8;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.DecidedEnterUtf8, writer);
WriteString(text, writer, MaxStrLenUTF8, Encoding.UTF8);
return(stream.ToArray());
}
}
public static byte[] FinishedInitialize(InlineKeyboardState state)
{
uint resSize = 2 * sizeof(uint) + 0x1;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.FinishedInitialize, writer);
writer.Write((byte)1); // Data (ignored by the program)
return(stream.ToArray());
}
}
public static byte[] MovedCursor(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 4 * sizeof(uint) + MaxStrLenUTF16;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.MovedCursor, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF16, Encoding.Unicode);
return(stream.ToArray());
}
}
public static byte[] ChangedStringUtf8(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 6 * sizeof(uint) + MaxStrLenUTF8;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.ChangedStringUtf8, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF8, Encoding.UTF8, true);
return(stream.ToArray());
}
}
public static byte[] MovedCursorUtf8V2(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 4 * sizeof(uint) + MaxStrLenUTF8 + 0x1;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.MovedCursorUtf8V2, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF8, Encoding.UTF8);
writer.Write((byte)0); // Flag == 0
return(stream.ToArray());
}
}
private void PushChangedString(string text, uint cursor, InlineKeyboardState state)
{
// TODO (Caian): The *V2 methods are not supported because the applications that request
// them do not seem to accept them. The regular methods seem to work just fine in all cases.
if (_encoding == Encoding.UTF8)
{
_interactiveSession.Push(InlineResponses.ChangedStringUtf8(text, cursor, state));
}
else
{
_interactiveSession.Push(InlineResponses.ChangedString(text, cursor, state));
}
}
public static byte[] ChangedString(string text, InlineKeyboardState state)
{
uint resSize = 6 * sizeof(uint) + MaxStrLenUTF16;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.ChangedString, writer);
WriteStringWithCursor(text, writer, MaxStrLenUTF16, Encoding.Unicode);
writer.Write((int)0); // ?
writer.Write((int)0); // ?
return(stream.ToArray());
}
}
public ResultCode Start(AppletSession normalSession,
AppletSession interactiveSession)
{
_normalSession = normalSession;
_interactiveSession = interactiveSession;
_interactiveSession.DataAvailable += OnInteractiveData;
var launchParams = _normalSession.Pop();
var keyboardConfig = _normalSession.Pop();
if (keyboardConfig.Length == Marshal.SizeOf <SoftwareKeyboardInitialize>())
{
// Initialize the keyboard applet in background mode.
_isBackground = true;
_keyboardBackgroundInitialize = ReadStruct <SoftwareKeyboardInitialize>(keyboardConfig);
InlineKeyboardState state = InlineKeyboardState.Uninitialized;
SetInlineState(state);
string acceptKeyName;
string cancelKeyName;
if (_device.UiHandler != null)
{
_dynamicTextInputHandler = _device.UiHandler.CreateDynamicTextInputHandler();
_dynamicTextInputHandler.TextChanged += DynamicTextChanged;
acceptKeyName = _dynamicTextInputHandler.AcceptKeyName;
cancelKeyName = _dynamicTextInputHandler.CancelKeyName;
}
else
{
Logger.Error?.Print(LogClass.ServiceAm, "GUI Handler is not set, software keyboard applet will not work properly");
acceptKeyName = "";
cancelKeyName = "";
}
_keyboardRenderer = new SoftwareKeyboardRenderer(acceptKeyName, cancelKeyName);
_interactiveSession.Push(InlineResponses.FinishedInitialize(state));
return(ResultCode.Success);
}
else
{
// Initialize the keyboard applet in foreground mode.
_isBackground = false;
if (keyboardConfig.Length < Marshal.SizeOf <SoftwareKeyboardConfig>())
{
Logger.Error?.Print(LogClass.ServiceAm, $"SoftwareKeyboardConfig size mismatch. Expected {Marshal.SizeOf<SoftwareKeyboardConfig>():x}. Got {keyboardConfig.Length:x}");
}
else
{
_keyboardForegroundConfig = ReadStruct <SoftwareKeyboardConfig>(keyboardConfig);
}
if (!_normalSession.TryPop(out _transferMemory))
{
Logger.Error?.Print(LogClass.ServiceAm, "SwKbd Transfer Memory is null");
}
if (_keyboardForegroundConfig.UseUtf8)
{
_encoding = Encoding.UTF8;
}
_foregroundState = SoftwareKeyboardState.Ready;
ExecuteForegroundKeyboard();
return(ResultCode.Success);
}
}
private void DecidedCancel(InlineKeyboardState state)
{
_interactiveSession.Push(InlineResponses.DecidedCancel(state));
}
private void OnBackgroundInteractiveData(byte[] data)
{
// WARNING: Only invoke applet state changes after an explicit finalization
// request from the game, this is because the inline keyboard is expected to
// keep running in the background sending data by itself.
using (MemoryStream stream = new MemoryStream(data))
using (BinaryReader reader = new BinaryReader(stream))
{
InlineKeyboardRequest request = (InlineKeyboardRequest)reader.ReadUInt32();
InlineKeyboardState state = GetInlineState();
long remaining;
Logger.Debug?.Print(LogClass.ServiceAm, $"Keyboard received command {request} in state {state}");
switch (request)
{
case InlineKeyboardRequest.UseChangedStringV2:
_useChangedStringV2 = true;
break;
case InlineKeyboardRequest.UseMovedCursorV2:
// Not used because we only reply with the final string.
break;
case InlineKeyboardRequest.SetUserWordInfo:
// Read the user word info data.
remaining = stream.Length - stream.Position;
if (remaining < sizeof(int))
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard User Word Info of {remaining} bytes");
}
else
{
int wordsCount = reader.ReadInt32();
int wordSize = Marshal.SizeOf <SoftwareKeyboardUserWord>();
remaining = stream.Length - stream.Position;
if (wordsCount > MaxUserWords)
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received {wordsCount} User Words but the maximum is {MaxUserWords}");
}
else if (wordsCount * wordSize != remaining)
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard User Word Info data of {remaining} bytes for {wordsCount} words");
}
else
{
_keyboardBackgroundUserWords = new SoftwareKeyboardUserWord[wordsCount];
for (int word = 0; word < wordsCount; word++)
{
byte[] wordData = reader.ReadBytes(wordSize);
_keyboardBackgroundUserWords[word] = ReadStruct <SoftwareKeyboardUserWord>(wordData);
}
}
}
_interactiveSession.Push(InlineResponses.ReleasedUserWordInfo(state));
break;
case InlineKeyboardRequest.SetCustomizeDic:
// Read the custom dic data.
remaining = stream.Length - stream.Position;
if (remaining != Marshal.SizeOf <SoftwareKeyboardCustomizeDic>())
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard Customize Dic of {remaining} bytes");
}
else
{
var keyboardDicData = reader.ReadBytes((int)remaining);
_keyboardBackgroundDic = ReadStruct <SoftwareKeyboardCustomizeDic>(keyboardDicData);
}
_interactiveSession.Push(InlineResponses.UnsetCustomizeDic(state));
break;
case InlineKeyboardRequest.SetCustomizedDictionaries:
// Read the custom dictionaries data.
remaining = stream.Length - stream.Position;
if (remaining != Marshal.SizeOf <SoftwareKeyboardDictSet>())
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard DictSet of {remaining} bytes");
}
else
{
var keyboardDictData = reader.ReadBytes((int)remaining);
_keyboardBackgroundDictSet = ReadStruct <SoftwareKeyboardDictSet>(keyboardDictData);
}
_interactiveSession.Push(InlineResponses.UnsetCustomizedDictionaries(state));
break;
case InlineKeyboardRequest.Calc:
// The Calc request tells the Applet to enter the main input handling loop, which will end
// with either a text being submitted or a cancel request from the user.
// NOTE: Some Calc requests happen early in the application and are not meant to be shown. This possibly
// happens because the game has complete control over when the inline keyboard is drawn, but here it
// would cause a dialog to pop in the emulator, which is inconvenient. An algorithm is applied to
// decide whether it is a dummy Calc or not, but regardless of the result, the dummy Calc appears to
// never happen twice, so the keyboard will always show if it has already been shown before.
bool shouldShowKeyboard = _alreadyShown;
_alreadyShown = true;
// Read the Calc data.
remaining = stream.Length - stream.Position;
if (remaining != Marshal.SizeOf <SoftwareKeyboardCalc>())
{
Logger.Error?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard Calc of {remaining} bytes");
}
else
{
var keyboardCalcData = reader.ReadBytes((int)remaining);
_keyboardBackgroundCalc = ReadStruct <SoftwareKeyboardCalc>(keyboardCalcData);
// Check if the application expects UTF8 encoding instead of UTF16.
if (_keyboardBackgroundCalc.UseUtf8)
{
_encoding = Encoding.UTF8;
}
// Force showing the keyboard regardless of the state, an unwanted
// input dialog may show, but it is better than a soft lock.
if (_keyboardBackgroundCalc.Appear.ShouldBeHidden == 0)
{
shouldShowKeyboard = true;
}
}
// Send an initialization finished signal.
state = InlineKeyboardState.Ready;
SetInlineState(state);
_interactiveSession.Push(InlineResponses.FinishedInitialize(state));
// Start a task with the GUI handler to get user's input.
new Task(() => { GetInputTextAndSend(shouldShowKeyboard, state); }).Start();
break;
case InlineKeyboardRequest.Finalize:
// The calling application wants to close the keyboard applet and will wait for a state change.
_backgroundState = InlineKeyboardState.Uninitialized;
AppletStateChanged?.Invoke(this, null);
break;
default:
// We shouldn't be able to get here through standard swkbd execution.
Logger.Warning?.Print(LogClass.ServiceAm, $"Invalid Software Keyboard request {request} during state {_backgroundState}");
_interactiveSession.Push(InlineResponses.Default(state));
break;
}
}
}
private void DynamicTextChanged(string text, int cursorBegin, int cursorEnd, bool isAccept, bool isCancel, bool force)
{
// Launch as a task to avoid blocking the UI
Task.Run(() =>
{
if (force)
{
Logger.Warning?.Print(LogClass.ServiceAm, "Forcing keyboard out of soft-lock...");
// Repeat the response sequence from a Calc to try to exit a soft-lock.
text = DefaultText;
PushChangedString(text, 0, InlineKeyboardState.Ready);
_interactiveSession.Push(InlineResponses.Default(InlineKeyboardState.Ready));
Thread.Sleep(SoftUnlockerDelayMilliseconds);
}
InlineKeyboardState state = GetInlineState();
if (!force && (state < InlineKeyboardState.Ready || state == InlineKeyboardState.Complete))
{
return;
}
if (isAccept == false && isCancel == false)
{
Logger.Debug?.Print(LogClass.ServiceAm, $"Updating keyboard text to {text} and cursor position to {cursorBegin}");
state = InlineKeyboardState.Complete;
PushChangedString(text, (uint)cursorBegin, state);
}
else
{
// The 'Complete' state indicates the Calc request has been fulfilled by the applet,
// but do not change the state of the entire applet, only the responses.
state = InlineKeyboardState.Complete;
if (isAccept)
{
Logger.Debug?.Print(LogClass.ServiceAm, $"Sending keyboard OK with text {text}");
DecidedEnter(text, state);
}
else if (isCancel)
{
Logger.Debug?.Print(LogClass.ServiceAm, "Sending keyboard Cancel");
DecidedCancel(state);
}
_interactiveSession.Push(InlineResponses.Default(state));
Logger.Debug?.Print(LogClass.ServiceAm, $"Resetting state of the keyboard to {state}");
// Set the state of the applet to 'Initialized' as it is the only known state so far
// that does not soft-lock the keyboard after use.
state = InlineKeyboardState.Initialized;
_interactiveSession.Push(InlineResponses.Default(state));
SetInlineState(state);
}
});
}
private void OnBackgroundInteractiveData(byte[] data)
{
// WARNING: Only invoke applet state changes after an explicit finalization
// request from the game, this is because the inline keyboard is expected to
// keep running in the background sending data by itself.
using (MemoryStream stream = new MemoryStream(data))
using (BinaryReader reader = new BinaryReader(stream))
{
InlineKeyboardRequest request = (InlineKeyboardRequest)reader.ReadUInt32();
InlineKeyboardState state = GetInlineState();
long remaining;
Logger.Debug?.Print(LogClass.ServiceAm, $"Keyboard received command {request} in state {state}");
switch (request)
{
case InlineKeyboardRequest.UseChangedStringV2:
Logger.Stub?.Print(LogClass.ServiceAm, "Keyboard response ChangedStringV2");
break;
case InlineKeyboardRequest.UseMovedCursorV2:
Logger.Stub?.Print(LogClass.ServiceAm, "Keyboard response MovedCursorV2");
break;
case InlineKeyboardRequest.SetUserWordInfo:
// Read the user word info data.
remaining = stream.Length - stream.Position;
if (remaining < sizeof(int))
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard User Word Info of {remaining} bytes");
}
else
{
int wordsCount = reader.ReadInt32();
int wordSize = Marshal.SizeOf <SoftwareKeyboardUserWord>();
remaining = stream.Length - stream.Position;
if (wordsCount > MaxUserWords)
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received {wordsCount} User Words but the maximum is {MaxUserWords}");
}
else if (wordsCount * wordSize != remaining)
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard User Word Info data of {remaining} bytes for {wordsCount} words");
}
else
{
_keyboardBackgroundUserWords = new SoftwareKeyboardUserWord[wordsCount];
for (int word = 0; word < wordsCount; word++)
{
byte[] wordData = reader.ReadBytes(wordSize);
_keyboardBackgroundUserWords[word] = ReadStruct <SoftwareKeyboardUserWord>(wordData);
}
}
}
_interactiveSession.Push(InlineResponses.ReleasedUserWordInfo(state));
break;
case InlineKeyboardRequest.SetCustomizeDic:
// Read the custom dic data.
remaining = stream.Length - stream.Position;
if (remaining != Marshal.SizeOf <SoftwareKeyboardCustomizeDic>())
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard Customize Dic of {remaining} bytes");
}
else
{
var keyboardDicData = reader.ReadBytes((int)remaining);
_keyboardBackgroundDic = ReadStruct <SoftwareKeyboardCustomizeDic>(keyboardDicData);
}
break;
case InlineKeyboardRequest.SetCustomizedDictionaries:
// Read the custom dictionaries data.
remaining = stream.Length - stream.Position;
if (remaining != Marshal.SizeOf <SoftwareKeyboardDictSet>())
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard DictSet of {remaining} bytes");
}
else
{
var keyboardDictData = reader.ReadBytes((int)remaining);
_keyboardBackgroundDictSet = ReadStruct <SoftwareKeyboardDictSet>(keyboardDictData);
}
break;
case InlineKeyboardRequest.Calc:
// The Calc request tells the Applet to enter the main input handling loop, which will end
// with either a text being submitted or a cancel request from the user.
// Read the Calc data.
SoftwareKeyboardCalc newCalc;
remaining = stream.Length - stream.Position;
if (remaining != Marshal.SizeOf <SoftwareKeyboardCalc>())
{
Logger.Error?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard Calc of {remaining} bytes");
newCalc = new SoftwareKeyboardCalc();
}
else
{
var keyboardCalcData = reader.ReadBytes((int)remaining);
newCalc = ReadStruct <SoftwareKeyboardCalc>(keyboardCalcData);
}
// Make the state transition.
if (state < InlineKeyboardState.Ready)
{
// This field consistently is -1 when the calc is not meant to be shown.
if (newCalc.Appear.Padding1 == -1)
{
state = InlineKeyboardState.Initialized;
Logger.Debug?.Print(LogClass.ServiceAm, $"Calc during state {state} is probably a dummy");
}
else
{
// Set the new calc
_keyboardBackgroundCalc = newCalc;
// Check if the application expects UTF8 encoding instead of UTF16.
if (_keyboardBackgroundCalc.UseUtf8)
{
_encoding = Encoding.UTF8;
}
string newText = _keyboardBackgroundCalc.InputText;
uint cursorPosition = (uint)_keyboardBackgroundCalc.CursorPos;
_dynamicTextInputHandler?.SetText(newText);
state = InlineKeyboardState.Ready;
PushChangedString(newText, cursorPosition, state);
}
SetInlineState(state);
}
else if (state == InlineKeyboardState.Complete)
{
state = InlineKeyboardState.Initialized;
}
// Send the response to the Calc
_interactiveSession.Push(InlineResponses.Default(state));
break;
case InlineKeyboardRequest.Finalize:
// Destroy the dynamic text input handler
if (_dynamicTextInputHandler != null)
{
_dynamicTextInputHandler.TextChanged -= DynamicTextChanged;
_dynamicTextInputHandler.Dispose();
}
// The calling application wants to close the keyboard applet and will wait for a state change.
SetInlineState(InlineKeyboardState.Uninitialized);
AppletStateChanged?.Invoke(this, null);
break;
default:
// We shouldn't be able to get here through standard swkbd execution.
Logger.Warning?.Print(LogClass.ServiceAm, $"Invalid Software Keyboard request {request} during state {state}");
_interactiveSession.Push(InlineResponses.Default(state));
break;
}
}
}
private void SetInlineState(InlineKeyboardState state)
{
_backgroundState = state;
}
private static void BeginResponse(InlineKeyboardState state, InlineKeyboardResponse resCode, BinaryWriter writer)
{
writer.Write((uint)state);
writer.Write((uint)resCode);
}
private void GetInputTextAndSend(bool shouldShowKeyboard, InlineKeyboardState oldState)
{
bool submit = true;
// Use the text specified by the Calc if it is available, otherwise use the default one.
string inputText = (!string.IsNullOrWhiteSpace(_keyboardBackgroundCalc.InputText) ?
_keyboardBackgroundCalc.InputText : DefaultText);
// Compute the elapsed time for the debouncing algorithm.
long currentMillis = PerformanceCounter.ElapsedMilliseconds;
long inputElapsedMillis = currentMillis - _lastTextSetMillis;
// Reset the input text before submitting the final result, that's because some games do not expect
// consecutive submissions to abruptly shrink and they will crash if it happens. Changing the string
// before the final submission prevents that.
InlineKeyboardState newState = InlineKeyboardState.DataAvailable;
SetInlineState(newState);
ChangedString("", newState);
if (!_lastWasHidden && (inputElapsedMillis < DebounceTimeMillis))
{
// A repeated Calc request has been received without player interaction, after the input has been
// sent. This behavior happens in some games, so instead of showing another dialog, just apply a
// time-based debouncing algorithm and repeat the last submission, either a value or a cancel.
// It is also possible that the first Calc request was hidden by accident, in this case use the
// debouncing as an oportunity to properly ask for input.
inputText = _textValue;
submit = _textValue != null;
_lastWasHidden = false;
Logger.Warning?.Print(LogClass.Application, "Debouncing repeated keyboard request");
}
else if (!shouldShowKeyboard)
{
// Submit the default text to avoid soft locking if the keyboard was ignored by
// accident. It's better to change the name than being locked out of the game.
inputText = DefaultText;
_lastWasHidden = true;
Logger.Debug?.Print(LogClass.Application, "Received a dummy Calc, keyboard will not be shown");
}
else if (_device.UiHandler == null)
{
Logger.Warning?.Print(LogClass.Application, "GUI Handler is not set. Falling back to default");
_lastWasHidden = false;
}
else
{
// Call the configured GUI handler to get user's input.
var args = new SoftwareKeyboardUiArgs
{
HeaderText = "", // The inline keyboard lacks these texts
SubtitleText = "",
GuideText = "",
SubmitText = (!string.IsNullOrWhiteSpace(_keyboardBackgroundCalc.Appear.OkText) ?
_keyboardBackgroundCalc.Appear.OkText : "OK"),
StringLengthMin = 0,
StringLengthMax = 100,
InitialText = inputText
};
submit = _device.UiHandler.DisplayInputDialog(args, out inputText);
inputText = submit ? inputText : null;
_lastWasHidden = false;
}
// The 'Complete' state indicates the Calc request has been fulfilled by the applet.
newState = InlineKeyboardState.Complete;
if (submit)
{
Logger.Debug?.Print(LogClass.ServiceAm, "Sending keyboard OK");
DecidedEnter(inputText, newState);
}
else
{
Logger.Debug?.Print(LogClass.ServiceAm, "Sending keyboard Cancel");
DecidedCancel(newState);
}
_interactiveSession.Push(InlineResponses.Default(newState));
// The constant calls to PopInteractiveData suggest that the keyboard applet continuously reports
// data back to the application and this can also be time-sensitive. Pushing a state reset right
// after the data has been sent does not work properly and the application will soft-lock. This
// delay gives time for the application to catch up with the data and properly process the state
// reset.
Thread.Sleep(ResetDelayMillis);
// 'Initialized' is the only known state so far that does not soft-lock the keyboard after use.
newState = InlineKeyboardState.Initialized;
Logger.Debug?.Print(LogClass.ServiceAm, $"Resetting state of the keyboard to {newState}");
SetInlineState(newState);
_interactiveSession.Push(InlineResponses.Default(newState));
// Keep the text and the timestamp of the input for the debouncing algorithm.
_textValue = inputText;
_lastTextSetMillis = PerformanceCounter.ElapsedMilliseconds;
}
private void OnBackgroundInteractiveData(byte[] data)
{
// WARNING: Only invoke applet state changes after an explicit finalization
// request from the game, this is because the inline keyboard is expected to
// keep running in the background sending data by itself.
using (MemoryStream stream = new MemoryStream(data))
using (BinaryReader reader = new BinaryReader(stream))
{
var request = (InlineKeyboardRequest)reader.ReadUInt32();
long remaining;
Logger.Debug?.Print(LogClass.ServiceAm, $"Keyboard received command {request} in state {_backgroundState}");
switch (request)
{
case InlineKeyboardRequest.UseChangedStringV2:
Logger.Stub?.Print(LogClass.ServiceAm, "Inline keyboard request UseChangedStringV2");
break;
case InlineKeyboardRequest.UseMovedCursorV2:
Logger.Stub?.Print(LogClass.ServiceAm, "Inline keyboard request UseMovedCursorV2");
break;
case InlineKeyboardRequest.SetUserWordInfo:
// Read the user word info data.
remaining = stream.Length - stream.Position;
if (remaining < sizeof(int))
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard User Word Info of {remaining} bytes");
}
else
{
int wordsCount = reader.ReadInt32();
int wordSize = Marshal.SizeOf <SoftwareKeyboardUserWord>();
remaining = stream.Length - stream.Position;
if (wordsCount > MaxUserWords)
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received {wordsCount} User Words but the maximum is {MaxUserWords}");
}
else if (wordsCount * wordSize != remaining)
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard User Word Info data of {remaining} bytes for {wordsCount} words");
}
else
{
_keyboardBackgroundUserWords = new SoftwareKeyboardUserWord[wordsCount];
for (int word = 0; word < wordsCount; word++)
{
byte[] wordData = reader.ReadBytes(wordSize);
_keyboardBackgroundUserWords[word] = ReadStruct <SoftwareKeyboardUserWord>(wordData);
}
}
}
_interactiveSession.Push(InlineResponses.ReleasedUserWordInfo(_backgroundState));
break;
case InlineKeyboardRequest.SetCustomizeDic:
// Read the custom dic data.
remaining = stream.Length - stream.Position;
if (remaining != Marshal.SizeOf <SoftwareKeyboardCustomizeDic>())
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard Customize Dic of {remaining} bytes");
}
else
{
var keyboardDicData = reader.ReadBytes((int)remaining);
_keyboardBackgroundDic = ReadStruct <SoftwareKeyboardCustomizeDic>(keyboardDicData);
}
break;
case InlineKeyboardRequest.SetCustomizedDictionaries:
// Read the custom dictionaries data.
remaining = stream.Length - stream.Position;
if (remaining != Marshal.SizeOf <SoftwareKeyboardDictSet>())
{
Logger.Warning?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard DictSet of {remaining} bytes");
}
else
{
var keyboardDictData = reader.ReadBytes((int)remaining);
_keyboardBackgroundDictSet = ReadStruct <SoftwareKeyboardDictSet>(keyboardDictData);
}
break;
case InlineKeyboardRequest.Calc:
// The Calc request is used to communicate configuration changes and commands to the keyboard.
// Fields in the Calc struct and operations are masked by the Flags field.
// Read the Calc data.
SoftwareKeyboardCalcEx newCalc;
remaining = stream.Length - stream.Position;
if (remaining == Marshal.SizeOf <SoftwareKeyboardCalc>())
{
var keyboardCalcData = reader.ReadBytes((int)remaining);
var keyboardCalc = ReadStruct <SoftwareKeyboardCalc>(keyboardCalcData);
newCalc = keyboardCalc.ToExtended();
}
else if (remaining == Marshal.SizeOf <SoftwareKeyboardCalcEx>() || remaining == SoftwareKeyboardCalcEx.AlternativeSize)
{
var keyboardCalcData = reader.ReadBytes((int)remaining);
newCalc = ReadStruct <SoftwareKeyboardCalcEx>(keyboardCalcData);
}
else
{
Logger.Error?.Print(LogClass.ServiceAm, $"Received invalid Software Keyboard Calc of {remaining} bytes");
newCalc = new SoftwareKeyboardCalcEx();
}
// Process each individual operation specified in the flags.
bool updateText = false;
if ((newCalc.Flags & KeyboardCalcFlags.Initialize) != 0)
{
_interactiveSession.Push(InlineResponses.FinishedInitialize(_backgroundState));
_backgroundState = InlineKeyboardState.Initialized;
}
if ((newCalc.Flags & KeyboardCalcFlags.SetCursorPos) != 0)
{
_cursorBegin = newCalc.CursorPos;
updateText = true;
Logger.Debug?.Print(LogClass.ServiceAm, $"Cursor position set to {_cursorBegin}");
}
if ((newCalc.Flags & KeyboardCalcFlags.SetInputText) != 0)
{
_textValue = newCalc.InputText;
updateText = true;
Logger.Debug?.Print(LogClass.ServiceAm, $"Input text set to {_textValue}");
}
if ((newCalc.Flags & KeyboardCalcFlags.SetUtf8Mode) != 0)
{
_encoding = newCalc.UseUtf8 ? Encoding.UTF8 : Encoding.Default;
Logger.Debug?.Print(LogClass.ServiceAm, $"Encoding set to {_encoding}");
}
if (updateText)
{
_dynamicTextInputHandler.SetText(_textValue, _cursorBegin);
_keyboardRenderer.UpdateTextState(_textValue, _cursorBegin, _cursorBegin, null, null);
}
if ((newCalc.Flags & KeyboardCalcFlags.MustShow) != 0)
{
ActivateFrontend();
_backgroundState = InlineKeyboardState.Shown;
PushChangedString(_textValue, (uint)_cursorBegin, _backgroundState);
}
// Send the response to the Calc
_interactiveSession.Push(InlineResponses.Default(_backgroundState));
break;
case InlineKeyboardRequest.Finalize:
// Destroy the frontend.
DestroyFrontend();
// The calling application wants to close the keyboard applet and will wait for a state change.
_backgroundState = InlineKeyboardState.Uninitialized;
AppletStateChanged?.Invoke(this, null);
break;
default:
// We shouldn't be able to get here through standard swkbd execution.
Logger.Warning?.Print(LogClass.ServiceAm, $"Invalid Software Keyboard request {request} during state {_backgroundState}");
_interactiveSession.Push(InlineResponses.Default(_backgroundState));
break;
}
}
}
public ResultCode Start(AppletSession normalSession, AppletSession interactiveSession)
{
lock (_lock)
{
_normalSession = normalSession;
_interactiveSession = interactiveSession;
_interactiveSession.DataAvailable += OnInteractiveData;
var launchParams = _normalSession.Pop();
var keyboardConfig = _normalSession.Pop();
_isBackground = keyboardConfig.Length == Marshal.SizeOf <SoftwareKeyboardInitialize>();
if (_isBackground)
{
// Initialize the keyboard applet in background mode.
_keyboardBackgroundInitialize = ReadStruct <SoftwareKeyboardInitialize>(keyboardConfig);
_backgroundState = InlineKeyboardState.Uninitialized;
if (_device.UiHandler == null)
{
Logger.Error?.Print(LogClass.ServiceAm, "GUI Handler is not set, software keyboard applet will not work properly");
}
else
{
// Create a text handler that converts keyboard strokes to strings.
_dynamicTextInputHandler = _device.UiHandler.CreateDynamicTextInputHandler();
_dynamicTextInputHandler.TextChangedEvent += HandleTextChangedEvent;
_dynamicTextInputHandler.KeyPressedEvent += HandleKeyPressedEvent;
_npads = new NpadReader(_device);
_npads.NpadButtonDownEvent += HandleNpadButtonDownEvent;
_npads.NpadButtonUpEvent += HandleNpadButtonUpEvent;
_keyboardRenderer = new SoftwareKeyboardRenderer(_device.UiHandler.HostUiTheme);
}
return(ResultCode.Success);
}
else
{
// Initialize the keyboard applet in foreground mode.
if (keyboardConfig.Length < Marshal.SizeOf <SoftwareKeyboardConfig>())
{
Logger.Error?.Print(LogClass.ServiceAm, $"SoftwareKeyboardConfig size mismatch. Expected {Marshal.SizeOf<SoftwareKeyboardConfig>():x}. Got {keyboardConfig.Length:x}");
}
else
{
_keyboardForegroundConfig = ReadStruct <SoftwareKeyboardConfig>(keyboardConfig);
}
if (!_normalSession.TryPop(out _transferMemory))
{
Logger.Error?.Print(LogClass.ServiceAm, "SwKbd Transfer Memory is null");
}
if (_keyboardForegroundConfig.UseUtf8)
{
_encoding = Encoding.UTF8;
}
_foregroundState = SoftwareKeyboardState.Ready;
ExecuteForegroundKeyboard();
return(ResultCode.Success);
}
}
}