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Updated on 2026-08-14

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Tangem 2026-06-11 17:10:30 +05:00
parent 4383291669
commit fec7986d80
16 changed files with 1322 additions and 587 deletions
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36
core/ui/src/main/java/com/tangem/core/ui/components/fields/visualtransformations/AmountVisualTransformation.kt
View file

@ -22,7 +22,7 @@ class AmountVisualTransformation(
private val symbol: String? = null,
private val currencyCode: String? = null,
private val decimalFormat: DecimalFormat = DecimalFormat(),
private val symbolColor: Color,
private val symbolColor: Color = Color.Unspecified,
) : VisualTransformation {
override fun filter(text: AnnotatedString): TransformedText {
@ -31,21 +31,27 @@ class AmountVisualTransformation(
decimals,
)
formattedAmount = formattedAmount.ifEmpty { decimalFormat.defaultFormat() }
val formattedText = if (formattedAmount.isNotEmpty() && symbol != null) {
val formattedText = if (formattedAmount.isNotEmpty()) {
buildAnnotatedString {
if (currencyCode != null) {
append(
formatFiatEditableAmount(
fiatAmount = formattedAmount,
fiatCurrencyCode = currencyCode,
fiatCurrencySymbol = symbol,
fiatCurrencySymbolColor = symbolColor,
),
)
} else {
append(formattedAmount)
append(CURRENCY_SPACE)
appendColored(symbol, symbolColor)
when {
currencyCode != null && symbol != null -> {
append(
formatFiatEditableAmount(
fiatAmount = formattedAmount,
fiatCurrencyCode = currencyCode,
fiatCurrencySymbol = symbol,
fiatCurrencySymbolColor = symbolColor,
),
)
}
symbol != null -> {
append(formattedAmount)
append(CURRENCY_SPACE)
appendColored(symbol, symbolColor)
}
else -> {
append(formattedAmount)
}
}
}
} else {

84
core/ui/src/test/kotlin/com/tangem/core/ui/components/fields/visualtransformations/AmountVisualTransformationTest.kt Normal file
View file

@ -0,0 +1,84 @@
package com.tangem.core.ui.components.fields.visualtransformations
import androidx.compose.ui.text.AnnotatedString
import com.google.common.truth.Truth.assertThat
import com.tangem.core.ui.format.bigdecimal.BigDecimalFormatConstants.CURRENCY_SPACE
import com.tangem.core.ui.utils.defaultFormat
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.TestInstance
import java.text.DecimalFormat
import java.text.DecimalFormatSymbols
import java.util.Locale
@TestInstance(TestInstance.Lifecycle.PER_CLASS)
internal class AmountVisualTransformationTest {
// Fixed US-style symbols so grouping (',') / decimal ('.') separators are deterministic across machines.
private fun usFormat(): DecimalFormat = DecimalFormat().apply {
decimalFormatSymbols = DecimalFormatSymbols(Locale.US)
}
@Test
fun `GIVEN symbol and no currency code WHEN filter THEN amount is followed by the symbol`() {
// Arrange
val sut = AmountVisualTransformation(decimals = 2, symbol = "ETH", decimalFormat = usFormat())
// Act
val result = sut.filter(AnnotatedString("1234.5"))
// Assert — "1,234.5" + non-breaking space + "ETH"
assertThat(result.text.text).isEqualTo("1,234.5${CURRENCY_SPACE}ETH")
}
@Test
fun `GIVEN no symbol and no currency code WHEN filter THEN only the formatted amount is shown`() {
// Arrange
val sut = AmountVisualTransformation(decimals = 2, decimalFormat = usFormat())
// Act
val result = sut.filter(AnnotatedString("1234.5"))
// Assert
assertThat(result.text.text).isEqualTo("1,234.5")
}
@Test
fun `GIVEN empty input WHEN filter THEN default formatted value is shown with symbol`() {
// Arrange
val format = usFormat()
val sut = AmountVisualTransformation(decimals = 2, symbol = "ETH", decimalFormat = format)
// Act
val result = sut.filter(AnnotatedString(""))
// Assert — empty input collapses to the default format, then the symbol branch appends the symbol
assertThat(result.text.text).isEqualTo("${format.defaultFormat()}${CURRENCY_SPACE}ETH")
}
@Test
fun `GIVEN grouping separators WHEN transformedToOriginal THEN separators are subtracted from offset`() {
// Arrange
val sut = AmountVisualTransformation(decimals = 2, symbol = "ETH", decimalFormat = usFormat())
val result = sut.filter(AnnotatedString("1234"))
// transformed text is "1,234 ETH" (one grouping separator before offset 5)
// Act — caret at the end of the digits in transformed space ("1,234" -> index 5)
val original = result.offsetMapping.transformedToOriginal(5)
// Assert — minus the one grouping separator => 4 original digits
assertThat(original).isEqualTo(4)
}
@Test
fun `GIVEN grouping separators WHEN originalToTransformed THEN offset accounts for inserted separators`() {
// Arrange
val sut = AmountVisualTransformation(decimals = 2, symbol = "ETH", decimalFormat = usFormat())
val result = sut.filter(AnnotatedString("1234"))
// Act — original caret after all 4 digits
val transformed = result.offsetMapping.originalToTransformed(4)
// Assert — coerced to just before the currency symbol; 4 digits + 1 separator = 5
assertThat(transformed).isEqualTo(5)
}
}