public static void UpdateText(this EditText editText, InputView inputView)
{
// Is UpdateText being called only to transform the text
// that's already set on the platform element?
// If so then we want to retain the cursor position
bool transformingPlatformText =
(editText.Text == inputView.Text);
var value = TextTransformUtilites.GetTransformedText(inputView.Text, inputView.TextTransform);
if (!transformingPlatformText)
{
editText.Text = value;
}
else
{
// Setting the text causes the cursor to reset to position zero
// so if we are transforming the text and then setting it to a
// new value then we need to retain the cursor position
if (value == editText.Text)
{
return;
}
int selectionStart = editText.SelectionStart;
editText.Text = value;
editText.SetSelection(selectionStart);
}
}
public static void UpdateText(this EditText editText, InputView inputView)
{
bool isPasswordEnabled =
(editText.InputType & InputTypes.TextVariationPassword) == InputTypes.TextVariationPassword ||
(editText.InputType & InputTypes.NumberVariationPassword) == InputTypes.NumberVariationPassword;
// Setting the text causes the cursor to be reset to position zero.
// So, let's retain the current cursor position and calculate a new cursor
// position if the text was modified by a Converter.
var oldText = editText.Text ?? string.Empty;
var newText = TextTransformUtilites.GetTransformedText(
inputView?.Text,
isPasswordEnabled ? TextTransform.None : inputView.TextTransform
);
// Re-calculate the cursor offset position if the text was modified by a Converter.
// but if the text is being set by code, let's just move the cursor to the end.
var cursorOffset = newText.Length - oldText.Length;
int cursorPosition = editText.IsFocused ? editText.GetCursorPosition(cursorOffset) : newText.Length;
if (oldText != newText)
{
editText.Text = newText;
}
editText.SetSelection(cursorPosition, cursorPosition);
}
public static void MapText(ButtonHandler handler, Button button)
{
var text = TextTransformUtilites.GetTransformedText(button.Text, button.TextTransform);
handler.NativeView?.UpdateText(text);
button.Handler?.UpdateValue(nameof(Button.ContentLayout));
}
public static void UpdateText(this TextBox platformControl, InputView inputView)
{
var hasFocus = platformControl.FocusState != UI.Xaml.FocusState.Unfocused;
var passwordBox = platformControl as MauiPasswordTextBox;
var isPassword = passwordBox?.IsPassword ?? false;
var textTransform = inputView?.TextTransform ?? TextTransform.None;
// Setting the text causes the cursor to be reset to position zero.
// So, let's retain the current cursor position and calculate a new cursor
// position if the text was modified by a Converter.
var oldText = platformControl.Text ?? string.Empty;
var newText = TextTransformUtilites.GetTransformedText(
inputView?.Text,
isPassword ? TextTransform.None : textTransform
);
// Re-calculate the cursor offset position if the text was modified by a Converter.
// but if the text is being set by code, let's just move the cursor to the end.
var cursorOffset = newText.Length - oldText.Length;
int cursorPosition = hasFocus ? platformControl.GetCursorPosition(cursorOffset) : newText.Length;
if (oldText != newText && passwordBox is not null)
{
passwordBox.Password = newText;
}
else if (oldText != newText)
{
platformControl.Text = newText;
}
platformControl.Select(cursorPosition, 0);
}
public static Tuple <Run, Color, Color> ToRunAndColorsTuple(this Span span, IFontManager fontManager, Font?defaultFont = null, Color?defaultColor = null, TextTransform defaultTextTransform = TextTransform.Default)
{
var transform = span.TextTransform != TextTransform.Default ? span.TextTransform : defaultTextTransform;
var text = TextTransformUtilites.GetTransformedText(span.Text, transform);
var run = new Run {
Text = text ?? string.Empty
};
var font = span.ToFont();
if (font.IsDefault && defaultFont.HasValue)
{
font = defaultFont.Value;
}
if (!font.IsDefault)
{
run.ApplyFont(font, fontManager);
}
if (span.IsSet(Span.TextDecorationsProperty))
{
run.TextDecorations = (global::Windows.UI.Text.TextDecorations)span.TextDecorations;
}
run.CharacterSpacing = span.CharacterSpacing.ToEm();
return(Tuple.Create(run, span.TextColor, span.BackgroundColor));
}
public static void UpdateText(this UIButton nativeButton, Button button)
{
var text = TextTransformUtilites.GetTransformedText(button.Text, button.TextTransform);
nativeButton.SetTitle(text, UIControlState.Normal);
// Content layout depends on whether or not the text is empty; changing the text means
// we may need to update the content layout
nativeButton.UpdateContentLayout(button);
}
public static void UpdateText(this MaterialButton platformButton, Button button)
{
var text = TextTransformUtilites.GetTransformedText(button.Text, button.TextTransform);
platformButton.Text = text;
// Content layout depends on whether or not the text is empty; changing the text means
// we may need to update the content layout
platformButton.UpdateContentLayout(button);
}
public static void UpdateText(this TextBox platformControl, InputView inputView)
{
if (platformControl is MauiPasswordTextBox passwordBox)
{
passwordBox.Password = TextTransformUtilites.GetTransformedText(inputView.Text, passwordBox.IsPassword ? TextTransform.None : inputView.TextTransform);
}
else
{
platformControl.Text = TextTransformUtilites.GetTransformedText(inputView.Text, inputView.TextTransform);
}
}
public static void UpdateText(this TextView textView, Label label)
{
switch (label.TextType)
{
case TextType.Text:
textView.Text = TextTransformUtilites.GetTransformedText(label.Text, label.TextTransform);
break;
case TextType.Html:
textView.UpdateTextHtml(label);
break;
}
}
public static void UpdateText(this TextBlock nativeControl, Label label)
{
switch (label.TextType)
{
case TextType.Html:
nativeControl.UpdateTextHtml(label);
break;
default:
nativeControl.Text = TextTransformUtilites.GetTransformedText(label.Text, label.TextTransform);
break;
}
}
public static void UpdateText(this TextView textView, Label label)
{
switch (label.TextType)
{
case TextType.Text:
if (label.FormattedText != null)
{
textView.TextFormatted = label.ToSpannableString();
}
else
{
textView.Text = TextTransformUtilites.GetTransformedText(label.Text, label.TextTransform);
}
break;
case TextType.Html:
textView.UpdateTextHtml(label);
break;
}
}
public static void UpdateText(this TextBlock platformControl, Label label)
{
switch (label.TextType)
{
case TextType.Html:
platformControl.UpdateTextHtml(label);
break;
default:
if (label.FormattedText != null)
{
platformControl.UpdateInlines(label);
}
else
{
platformControl.Text = TextTransformUtilites.GetTransformedText(label.Text, label.TextTransform);
}
break;
}
}
public static void UpdateText(this UILabel platformLabel, Label label)
{
switch (label.TextType)
{
case TextType.Html:
platformLabel.UpdateTextHtml(label);
break;
default:
if (label.FormattedText != null)
{
platformLabel.AttributedText = label.ToNSAttributedString();
}
else
{
platformLabel.Text = TextTransformUtilites.GetTransformedText(label.Text, label.TextTransform);
}
break;
}
}
public static Run ToRun(this Span span, IFontManager fontManager, Font?defaultFont = null, Color?defaultColor = null, TextTransform defaultTextTransform = TextTransform.Default)
{
var transform = span.TextTransform != TextTransform.Default ? span.TextTransform : defaultTextTransform;
var text = TextTransformUtilites.GetTransformedText(span.Text, transform);
var run = new Run {
Text = text ?? string.Empty
};
var fgcolor = span.TextColor ?? defaultColor;
if (fgcolor is not null)
{
run.Foreground = fgcolor.ToPlatform();
}
// NOTE: Background is not supported in Run
var font = span.ToFont();
if (font.IsDefault && defaultFont.HasValue)
{
font = defaultFont.Value;
}
if (!font.IsDefault)
{
run.ApplyFont(font, fontManager);
}
if (span.IsSet(Span.TextDecorationsProperty))
{
run.TextDecorations = (global::Windows.UI.Text.TextDecorations)span.TextDecorations;
}
run.CharacterSpacing = span.CharacterSpacing.ToEm();
return(run);
}
public static void UpdateText(this UITextField textField, InputView inputView)
{
// Setting the text causes the cursor to be reset to the end of the UITextView.
// So, let's set back the cursor to the last known position and calculate a new
// position if needed when the text was modified by a Converter.
var oldText = textField.Text ?? string.Empty;
var newText = TextTransformUtilites.GetTransformedText(
inputView?.Text,
textField.SecureTextEntry ? TextTransform.Default : inputView.TextTransform
);
// Re-calculate the cursor offset position if the text was modified by a Converter.
// but if the text is being set by code, let's just move the cursor to the end.
var cursorOffset = newText.Length - oldText.Length;
var cursorPosition = textField.IsEditing ? textField.GetCursorPosition(cursorOffset) : newText.Length;
if (oldText != newText)
{
textField.Text = newText;
}
textField.SetTextRange(cursorPosition, 0);
}
public static void UpdateText(this TEntry entry, InputView inputView)
{
entry.Text = TextTransformUtilites.GetTransformedText(entry.Text, inputView.TextTransform);
}
public static void UpdateText(this AutoSuggestBox platformControl, InputView inputView)
{
platformControl.Text = TextTransformUtilites.GetTransformedText(inputView.Text, inputView.TextTransform);
}
public static void UpdateText(this SearchView searchView, InputView inputView)
{
searchView.SetQuery(TextTransformUtilites.GetTransformedText(inputView.Text, inputView.TextTransform), false);
}
internal static SpannableString ToSpannableStringNewWay(
this FormattedString formattedString,
IFontManager fontManager,
Context?context = null,
double defaultCharacterSpacing = 0d,
TextAlignment defaultHorizontalAlignment = TextAlignment.Start,
Font?defaultFont = null,
Graphics.Color?defaultColor = null,
TextTransform defaultTextTransform = TextTransform.Default,
TextDecorations defaultTextDecorations = TextDecorations.None)
{
if (formattedString == null)
{
return(new SpannableString(string.Empty));
}
var defaultFontSize = defaultFont?.Size ?? fontManager.DefaultFontSize;
var builder = new StringBuilder();
for (int i = 0; i < formattedString.Spans.Count; i++)
{
Span span = formattedString.Spans[i];
var transform = span.TextTransform != TextTransform.Default ? span.TextTransform : defaultTextTransform;
var text = TextTransformUtilites.GetTransformedText(span.Text, transform);
if (text == null)
{
continue;
}
builder.Append(text);
}
var spannable = new SpannableString(builder.ToString());
var c = 0;
for (int i = 0; i < formattedString.Spans.Count; i++)
{
Span span = formattedString.Spans[i];
var text = span.Text;
if (text == null)
{
continue;
}
int start = c;
int end = start + text.Length;
c = end;
// TextColor
var textColor = span.TextColor ?? defaultColor;
if (textColor is not null)
{
spannable.SetSpan(new ForegroundColorSpan(textColor.ToPlatform()), start, end, SpanTypes.InclusiveExclusive);
}
// BackgroundColor
if (span.BackgroundColor is not null)
{
spannable.SetSpan(new BackgroundColorSpan(span.BackgroundColor.ToPlatform()), start, end, SpanTypes.InclusiveExclusive);
}
// LineHeight
if (span.LineHeight >= 0)
{
spannable.SetSpan(new LineHeightSpan(span.LineHeight), start, end, SpanTypes.InclusiveExclusive);
}
// CharacterSpacing
var characterSpacing = span.CharacterSpacing >= 0
? span.CharacterSpacing
: defaultCharacterSpacing;
if (characterSpacing >= 0)
{
spannable.SetSpan(new LetterSpacingSpan(characterSpacing.ToEm()), start, end, SpanTypes.InclusiveInclusive);
}
// Font
var font = span.ToFont(defaultFontSize);
if (font.IsDefault && defaultFont.HasValue)
{
font = defaultFont.Value;
}
if (!font.IsDefault)
{
spannable.SetSpan(new FontSpan(font, fontManager, context), start, end, SpanTypes.InclusiveInclusive);
}
// TextDecorations
var textDecorations = span.IsSet(Span.TextDecorationsProperty)
? span.TextDecorations
: defaultTextDecorations;
if (textDecorations.HasFlag(TextDecorations.Strikethrough))
{
spannable.SetSpan(new StrikethroughSpan(), start, end, SpanTypes.InclusiveInclusive);
}
if (textDecorations.HasFlag(TextDecorations.Underline))
{
spannable.SetSpan(new UnderlineSpan(), start, end, SpanTypes.InclusiveInclusive);
}
}
return(spannable);
}
public static NSAttributedString ToNSAttributedString(this Span span, IFontManager fontManager, double defaultLineHeight = 0d, TextAlignment defaultHorizontalAlignment = TextAlignment.Start, Font?defaultFont = null, Color?defaultColor = null, TextTransform defaultTextTransform = TextTransform.Default)
{
var transform = span.TextTransform != TextTransform.Default ? span.TextTransform : defaultTextTransform;
var text = TextTransformUtilites.GetTransformedText(span.Text, transform);
if (text is null)
{
return(new NSAttributedString(string.Empty));
}
var style = new NSMutableParagraphStyle();
var lineHeight = span.LineHeight >= 0
? span.LineHeight
: defaultLineHeight;
if (lineHeight >= 0)
{
style.LineHeightMultiple = new nfloat(lineHeight);
}
style.Alignment = defaultHorizontalAlignment switch
{
TextAlignment.Start => UITextAlignment.Left,
TextAlignment.Center => UITextAlignment.Center,
TextAlignment.End => UITextAlignment.Right,
_ => UITextAlignment.Left
};
var font = span.ToFont();
if (font.IsDefault && defaultFont.HasValue)
{
font = defaultFont.Value;
}
var hasUnderline = false;
var hasStrikethrough = false;
if (span.IsSet(Span.TextDecorationsProperty))
{
var textDecorations = span.TextDecorations;
hasUnderline = (textDecorations & TextDecorations.Underline) != 0;
hasStrikethrough = (textDecorations & TextDecorations.Strikethrough) != 0;
}
var platformFont = font.IsDefault ? null : font.ToUIFont(fontManager);
#if !MACOS
var attrString = new NSAttributedString(
text,
platformFont,
(span.TextColor ?? defaultColor)?.ToPlatform(),
span.BackgroundColor?.ToPlatform(),
underlineStyle: hasUnderline ? NSUnderlineStyle.Single : NSUnderlineStyle.None,
strikethroughStyle: hasStrikethrough ? NSUnderlineStyle.Single : NSUnderlineStyle.None,
paragraphStyle: style,
kerning: (float)span.CharacterSpacing);
#else
var attrString = new NSAttributedString(
text,
platformFont,
(span.TextColor ?? defaultColor)?.ToPlatform(),
span.BackgroundColor?.ToPlatform(),
underlineStyle: hasUnderline ? NSUnderlineStyle.Single : NSUnderlineStyle.None,
strikethroughStyle: hasStrikethrough ? NSUnderlineStyle.Single : NSUnderlineStyle.None,
paragraphStyle: style,
kerningAdjustment: (float)span.CharacterSpacing);
#endif
return(attrString);
}
}
public static void UpdateText(this UISearchBar uiSearchBar, SearchBar searchBar)
{
uiSearchBar.Text = TextTransformUtilites.GetTransformedText(searchBar.Text, searchBar.TextTransform);
}
public virtual string UpdateFormsText(string source, TextTransform textTransform) => TextTransformUtilites.GetTransformedText(source, textTransform);
public static void UpdateText(this UITextField textField, InputView inputView)
{
textField.Text = TextTransformUtilites.GetTransformedText(inputView.Text, inputView.TextTransform);
}
public static SpannableString ToSpannableString(this FormattedString formattedString, IFontManager fontManager, TextPaint?textPaint = null, Context?context = null, double defaultLineHeight = 0d, TextAlignment defaultHorizontalAlignment = TextAlignment.Start, Font?defaultFont = null, Graphics.Color?defaultColor = null, TextTransform defaultTextTransform = TextTransform.Default)
{
if (formattedString == null)
{
return(new SpannableString(string.Empty));
}
var builder = new StringBuilder();
for (int i = 0; i < formattedString.Spans.Count; i++)
{
Span span = formattedString.Spans[i];
var transform = span.TextTransform != TextTransform.Default ? span.TextTransform : defaultTextTransform;
var text = TextTransformUtilites.GetTransformedText(span.Text, transform);
if (text == null)
{
continue;
}
builder.Append(text);
}
var spannable = new SpannableString(builder.ToString());
var c = 0;
for (int i = 0; i < formattedString.Spans.Count; i++)
{
Span span = formattedString.Spans[i];
var text = span.Text;
if (text == null)
{
continue;
}
int start = c;
int end = start + text.Length;
c = end;
var fgcolor = span.TextColor ?? defaultColor;
if (fgcolor != null)
{
spannable.SetSpan(new ForegroundColorSpan(fgcolor.ToPlatform()), start, end, SpanTypes.InclusiveExclusive);
}
if (span.BackgroundColor != null)
{
spannable.SetSpan(new BackgroundColorSpan(span.BackgroundColor.ToPlatform()), start, end, SpanTypes.InclusiveExclusive);
}
var lineHeight = span.LineHeight >= 0
? span.LineHeight
: defaultLineHeight;
if (lineHeight >= 0)
{
spannable.SetSpan(new LineHeightSpan(textPaint, lineHeight), start, end, SpanTypes.InclusiveExclusive);
}
var font = span.ToFont();
if (font.IsDefault && defaultFont.HasValue)
{
font = defaultFont.Value;
}
if (!font.IsDefault)
{
spannable.SetSpan(
new FontSpan(font, context, span.CharacterSpacing.ToEm(), defaultHorizontalAlignment, fontManager),
start,
end,
SpanTypes.InclusiveInclusive);
}
if (span.IsSet(Span.TextDecorationsProperty))
{
spannable.SetSpan(new TextDecorationSpan(span), start, end, SpanTypes.InclusiveInclusive);
}
}
return(spannable);
}
