void HandleEditingChanged(object sender, TextChangedEventArgs e)
{
if (_internalTextChange)
{
return;
}
string newText = _textBox.Text;
if (_uppercase)
{
newText = newText.ToUpper();
int selStart = _textBox.SelectionStart;
int selLength = _textBox.SelectionLength;
_textBox.Text = newText;
_textBox.Select(selStart, selLength);
}
string text = newText;
if (_inputType.HasFlag(TextInputType.Digits))
{
text = text.Replace(",", "").Replace(".", "");
}
text = _controller.TextChanged(text);
if (text != newText)
{
SetText(text);
}
}
InputTypes TypeFromContext(TextInputType context)
{
InputTypes value = Android.Text.InputTypes.TextFlagNoSuggestions | Android.Text.InputTypes.ClassText;
switch (context & TextInputType.TypeFilter)
{
case TextInputType.Email:
value = InputTypes.TextVariationEmailAddress | Android.Text.InputTypes.ClassText;
break;
case TextInputType.FirstLetterUppercase:
value = InputTypes.TextFlagCapWords | Android.Text.InputTypes.ClassText;
break;
case TextInputType.Digits:
value = InputTypes.ClassNumber | InputTypes.NumberFlagSigned;
break;
case TextInputType.Numeric:
value = InputTypes.NumberFlagDecimal | InputTypes.ClassNumber;
break;
case TextInputType.NormalText:
value = InputTypes.TextVariationNormal | Android.Text.InputTypes.ClassText;
break;
case TextInputType.Uppercase:
value = InputTypes.TextFlagCapCharacters | InputTypes.ClassText;
break;
case TextInputType.PasswordClass:
value = InputTypes.TextVariationPassword | Android.Text.InputTypes.ClassText;
break;
case TextInputType.MultilineText:
value = InputTypes.TextFlagMultiLine | Android.Text.InputTypes.TextFlagImeMultiLine;
break;
}
if (context.HasFlag(TextInputType.NoSuggestions))
{
value |= InputTypes.TextFlagNoSuggestions | InputTypes.TextVariationVisiblePassword;
}
return(value);
}
public NativeInput(Rectangle position, TextInputType keyboardContext, string text, int textSize, Align align, ITextEdit controller)
{
if (CurrentFocus != null)
{
CurrentFocus.Unfocus();
}
_inputType = keyboardContext;
_controller = controller;
CurrentFocus = this;
text = text.Replace('\n', '\r');
var info = DisplayInformation.GetForCurrentView();
double scale = info.RawPixelsPerViewPixel;
double fontSize = textSize;
if (keyboardContext == TextInputType.Password)
{
_usePasswordBox = true;
_passwordBox.PasswordChanged += HandleEditingChangedPassword;
_passwordBox.LostFocus += HandleEditingDidEnd;
_passwordBox.KeyUp += HandleKeyUp;
Canvas.SetLeft(_passwordBox, (position.X + 2) / scale);
_passwordBox.Width = (position.Width - 4) / scale;
_passwordBox.Height = _passwordBox.MinHeight;
Canvas.SetTop(_passwordBox, (position.Center.Y / scale - _passwordBox.Height / 2));
_passwordBox.FontSize = fontSize;
_passwordBox.Visibility = Visibility.Visible;
_passwordBox.Focus(FocusState.Programmatic);
SetText(text);
}
else
{
_usePasswordBox = false;
_textBox.TextChanged += HandleEditingChanged;
_textBox.LostFocus += HandleEditingDidEnd;
_textBox.KeyUp += HandleKeyUp;
Canvas.SetLeft(_textBox, (position.X + 2) / scale);
_textBox.Width = (position.Width - 2) / scale;
switch (align & Align.Horz)
{
case Align.Left:
_textBox.TextAlignment = TextAlignment.Left;
break;
case Align.Right:
_textBox.TextAlignment = TextAlignment.Right;
break;
case Align.Center:
_textBox.TextAlignment = TextAlignment.Center;
break;
}
_inputScope.Names.Clear();
_inputScope.Names.Add(NameFromContext(keyboardContext));
_textBox.InputScope = _inputScope;
_textBox.IsTextPredictionEnabled = !keyboardContext.HasFlag(TextInputType.NoSuggestions);
_uppercase = keyboardContext.HasFlag(TextInputType.Uppercase);
if (keyboardContext == TextInputType.MultilineText)
{
_textBox.VerticalContentAlignment = VerticalAlignment.Top;
_textBox.AcceptsReturn = true;
_textBox.TextWrapping = TextWrapping.Wrap;
_multiline = true;
Canvas.SetTop(_textBox, (position.Y + 2) / scale);
_textBox.Height = (position.Height - 4) / scale;
}
else
{
_textBox.VerticalContentAlignment = VerticalAlignment.Center;
_textBox.AcceptsReturn = false;
_textBox.TextWrapping = keyboardContext.HasFlag(TextInputType.Wrap) ? TextWrapping.Wrap : TextWrapping.NoWrap;
_multiline = false;
_textBox.Height = _textBox.MinHeight;
Canvas.SetTop(_textBox, (position.Center.Y / scale - _textBox.Height / 2));
}
SetText(text);
CoreDispatcher dispatcher = CoreWindow.GetForCurrentThread().Dispatcher;
_textBox.FontSize = fontSize;
_textBox.Visibility = Visibility.Visible;
_textBox.Focus(FocusState.Programmatic);
}
}
public NativeInput(Rectangle position, TextInputType keyboardContext, string text, int textSize, Align align, ITextEdit controller)
{
if (CurrentFocus != null)
{
CurrentFocus.Unfocus();
}
_controller = controller;
CurrentFocus = this;
if (_textField == null)
{
InitTextField();
}
text = text.Replace('\n', '\r');
Bottom = position.Bottom + (int)Platform.PointsToPixels(10);
position.Y += AppMain.Current.SetFocus(this);
float x = Platform.PixelsToPoints(position.X) + 1;
float y = Platform.PixelsToPoints(position.Y) + 2;
float width = Platform.PixelsToPoints(position.Width) - 2;
float height = Platform.PixelsToPoints(position.Height) - 4;
if (keyboardContext.HasFlag(TextInputType.PasswordClass))
{
keyboardContext &= ~(TextInputType.NoSuggestions);
}
if (keyboardContext.HasFlag(TextInputType.MultilineText))
{
_useTextView = true;
_textView.Frame = new System.Drawing.RectangleF(x, y, width, height);
_textView.BackgroundColor = new UIColor(255, 255, 255, 255);
_textView.TextColor = new UIColor(0, 0, 0, 255);
_textView.Opaque = true;
_textView.KeyboardType = TypeFromContext(keyboardContext);
_textView.AutocapitalizationType = AutoCapitalizationFromContext(keyboardContext);
_textView.KeyboardType = UIKeyboardType.Default;
_textView.AutocorrectionType = keyboardContext.HasFlag(TextInputType.NoSuggestions) ? UITextAutocorrectionType.No : UITextAutocorrectionType.Default;
_textView.SecureTextEntry = keyboardContext.HasFlag(TextInputType.PasswordClass);
_textView.Font = UIFont.FromName("Helvetica", textSize);
SetText(text);
_textView.Ended += HandleEnded;
_textView.BecomeFirstResponder();
}
else
{
_textField.Frame = new System.Drawing.RectangleF(x, y, width, height);
_textField.BackgroundColor = new UIColor(255, 255, 255, 255);
_textField.TextColor = new UIColor(0, 0, 0, 255);
_textField.Opaque = true;
_textField.KeyboardType = TypeFromContext(keyboardContext);
_textField.AutocapitalizationType = AutoCapitalizationFromContext(keyboardContext);
_textField.ResignFirstResponder();
_textField.AutocorrectionType = keyboardContext.HasFlag(TextInputType.NoSuggestions) ? UITextAutocorrectionType.No : UITextAutocorrectionType.Default;
_textField.SecureTextEntry = keyboardContext.HasFlag(TextInputType.PasswordClass);
_textField.ClearsOnBeginEditing = false;
_textField.Font = UIFont.FromName("Helvetica", textSize);
switch (align & Align.Horz)
{
case Align.Center:
_textField.TextAlignment = UITextAlignment.Center;
break;
case Align.Left:
_textField.TextAlignment = UITextAlignment.Left;
break;
case Align.Right:
_textField.TextAlignment = UITextAlignment.Right;
break;
}
SetText(text);
_textField.EditingChanged += HandleEditingChanged;
_textField.EditingDidEnd += HandleEditingDidEnd;
_textField.ShouldReturn = delegate
{
if ((keyboardContext & TextInputType.TypeFilter) != TextInputType.MultilineText)
{
_controller.Return();
return(true);
}
return(false);
};
_textField.BecomeFirstResponder();
}
}
public NativeInput(Rectangle position, TextInputType textInputType, string text, int textSize, Align textAlign, ITextEdit controller)
{
if (CurrentFocus != null)
{
CurrentFocus.Unfocus();
}
_controller = controller;
CurrentFocus = this;
if (_textField != null)
{
EditTextEx field = _textField;
field.OnBackPressed -= UnfocusByBack;
_textField = null;
DelayedActionInvoker.Instance.AddAction(10, (s) =>
{
AppMain.Current.RootView.RemoveView(field);
});
}
{
InitTextField();
}
DisplayMetrics metrics = AppMain.Activity.Resources.DisplayMetrics;
int padding = 0;
if (textInputType == TextInputType.MultilineText)
{
padding = 0;
}
_textField.SetTextSize(Android.Util.ComplexUnitType.Px, (float)(UiUnit.FontUnit * textSize));
_textField.SetHeight(position.Height);
_textField.SetPadding(0, padding, _textField.PaddingRight, padding);
_textField.InputType = TypeFromContext(textInputType);
if (textInputType.HasFlag(TextInputType.Uppercase))
{
_textField.SetFilters(new IInputFilter[] { new InputFilterLengthFilter(controller.MaxLength), new InputFilterAllCaps() });
}
else
{
_textField.SetFilters(new IInputFilter[] { new InputFilterLengthFilter(controller.MaxLength) });
}
switch (textAlign & Align.Horz)
{
case Align.Left:
_textField.Gravity = GravityFlags.CenterVertical | GravityFlags.Left;
break;
case Align.Center:
_textField.Gravity = GravityFlags.CenterVertical | GravityFlags.CenterHorizontal;
break;
case Align.Right:
_textField.Gravity = GravityFlags.CenterVertical | GravityFlags.Right;
break;
}
if ((textInputType & TextInputType.TypeFilter) == TextInputType.MultilineText)
{
_textField.SetMaxLines(controller.MaxLines);
_textField.EditorAction -= HandleEditorAction;
_textField.Gravity = GravityFlags.Left | GravityFlags.Top;
_textField.SetSingleLine(false);
_textField.ImeOptions = ImeAction.ImeNull | (ImeAction)ImeFlags.NoExtractUi;
}
else
{
_textField.SetMaxLines(1);
_textField.EditorAction += HandleEditorAction;
_textField.SetSingleLine(true);
_textField.ImeOptions = (controller.WaitsForReturn ? ImeAction.Next : ImeAction.Done) | (ImeAction)ImeFlags.NoExtractUi;
}
if (textInputType.HasFlag(TextInputType.NoSuggestions))
{
_textField.ImeOptions |= (ImeAction)InputTypes.TextFlagNoSuggestions;
}
_textField.SetAllCaps((textInputType & TextInputType.TypeFilter) == TextInputType.Uppercase);
_textField.TransformationMethod = textInputType == TextInputType.Password ? new PasswordTransformationMethod(): null;
_layoutParams.SetMargins(position.X, position.Y + 4, 0, 0);
_layoutParams.Width = position.Width;
_layoutParams.Height = position.Height - 4;
_textField.Text = text;
_textField.SetSelection(_textField.Text.Length, _textField.Text.Length);
_textField.TextChanged += HandleEditingChanged;
_textField.FocusChange += HandleFocusChange;
_textField.RequestLayout();
_textField.Visibility = Android.Views.ViewStates.Visible;
_textField.SetCursorVisible(true);
_textField.RequestFocus();
_textField.RequestFocusFromTouch();
ShowKeyboard(_textField);
}