Updated on 2026-08-14
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Tangem
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bfeea010d0
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6 changed files with 616 additions and 226 deletions
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package com.tangem.common.ui.tokens
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import androidx.compose.animation.AnimatedVisibility
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import androidx.compose.animation.core.FastOutLinearInEasing
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import androidx.compose.animation.core.LinearOutSlowInEasing
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import androidx.compose.animation.core.animateIntAsState
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import androidx.compose.animation.core.snap
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import androidx.compose.animation.core.tween
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import androidx.compose.animation.expandVertically
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import androidx.compose.animation.fadeIn
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import androidx.compose.animation.fadeOut
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import androidx.compose.animation.shrinkVertically
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import androidx.compose.foundation.layout.Arrangement
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import androidx.compose.foundation.layout.Column
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import androidx.compose.foundation.layout.padding
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import androidx.compose.foundation.layout.size
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import androidx.compose.foundation.lazy.LazyListScope
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import androidx.compose.foundation.lazy.itemsIndexed
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import androidx.compose.material3.Icon
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import androidx.compose.material3.Text
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.getValue
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.platform.testTag
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import androidx.compose.ui.res.painterResource
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import androidx.compose.ui.semantics.semantics
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import androidx.compose.ui.text.style.TextAlign
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import androidx.compose.ui.unit.dp
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import com.tangem.core.ui.R
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import com.tangem.core.ui.components.SpacerH16
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import com.tangem.core.ui.components.SpacerH24
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import com.tangem.core.ui.components.buttons.SecondarySmallButton
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import com.tangem.core.ui.components.buttons.SmallButtonConfig
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import com.tangem.core.ui.components.tokenlist.NON_CONTENT_TOKENS_LIST_KEY
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import com.tangem.core.ui.components.tokenlist.PortfolioListItem
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import com.tangem.core.ui.components.tokenlist.PortfolioTokensListItem
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import com.tangem.core.ui.components.tokenlist.state.PortfolioItemContentUM
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import com.tangem.core.ui.components.tokenlist.state.TokensListItemUM
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import com.tangem.core.ui.decorations.roundedShapeItemDecoration
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import com.tangem.core.ui.extensions.conditional
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import com.tangem.core.ui.extensions.stringResourceSafe
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import com.tangem.core.ui.res.TangemTheme
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import com.tangem.core.ui.utils.lazyListItemPosition
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fun LazyListScope.portfolioTokensList(
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portfolio: TokensListItemUM.Portfolio,
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portfolioIndex: Int,
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testTag: String,
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isBalanceHidden: Boolean,
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modifier: Modifier = Modifier,
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) {
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val tokens = portfolio.tokens
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val isExpanded = portfolio.isExpanded
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val lastIndex = tokens.lastIndex.inc()
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portfolioItem(
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portfolio = portfolio,
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modifier = modifier.testModifier(portfolioIndex, testTag),
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isBalanceHidden = isBalanceHidden,
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)
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val portfolioContent = portfolio.content
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if (portfolioContent is PortfolioItemContentUM.Empty) {
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item(
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key = "$NON_CONTENT_TOKENS_LIST_KEY account-${portfolio.id}",
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contentType = "$NON_CONTENT_TOKENS_LIST_KEY account-${portfolio.id}",
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) {
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SlideInItemVisibility(
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currentIndex = 1,
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lastIndex = lastIndex,
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modifier = modifier
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.animateItem(fadeInSpec = null, placementSpec = null, fadeOutSpec = null)
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.roundedShapeItemDecoration(
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radius = TangemTheme.dimens.radius14,
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currentIndex = 1,
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lastIndex = 1,
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backgroundColor = TangemTheme.colors.background.primary,
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),
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visible = isExpanded,
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) {
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EmptyAccountContent(portfolioContent)
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}
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}
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return
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}
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itemsIndexed(
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items = tokens,
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key = { _, item -> item.id.toString() + "-portfolio-${portfolio.id}" },
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contentType = { _, item -> item::class.java },
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itemContent = { tokenIndex, token ->
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val indexWithHeader = tokenIndex.inc()
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SlideInItemVisibility(
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currentIndex = tokenIndex,
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lastIndex = lastIndex,
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modifier = modifier
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.testModifier(indexWithHeader, testTag)
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.animateItem(fadeInSpec = null, placementSpec = null, fadeOutSpec = null)
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.roundedShapeItemDecoration(
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radius = TangemTheme.dimens.radius14,
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currentIndex = indexWithHeader,
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lastIndex = lastIndex,
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backgroundColor = TangemTheme.colors.background.primary,
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),
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visible = isExpanded,
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) {
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PortfolioTokensListItem(
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state = token,
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isBalanceHidden = isBalanceHidden,
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modifier = Modifier
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.conditional(indexWithHeader == lastIndex) { padding(bottom = 8.dp) },
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)
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}
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},
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)
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}
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@Suppress("MagicNumber")
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fun LazyListScope.portfolioItem(portfolio: TokensListItemUM.Portfolio, modifier: Modifier, isBalanceHidden: Boolean) {
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val tokens = portfolio.tokens
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val isExpanded = portfolio.isExpanded
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val lastIndex = when {
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isExpanded && tokens.isEmpty() -> 1
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isExpanded -> tokens.lastIndex.inc()
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else -> 0
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}
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item(
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key = "account-${portfolio.id}",
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contentType = "account-content",
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) {
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// Snap immediately on expand; on collapse, hold until all child items finish
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// their shrink animation, then snap to fully-rounded shape.
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val effectiveLastIndex by animateIntAsState(
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targetValue = lastIndex,
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animationSpec = if (lastIndex != 0) {
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snap()
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} else {
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snap(delayMillis = minOf(50 * tokens.lastIndex, 250) + 150)
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},
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label = "lastIndex",
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)
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PortfolioListItem(
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state = portfolio,
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isBalanceHidden = isBalanceHidden,
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modifier = modifier
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.roundedShapeItemDecoration(
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currentIndex = 0,
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radius = TangemTheme.dimens.radius14,
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lastIndex = effectiveLastIndex,
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backgroundColor = TangemTheme.colors.background.primary,
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),
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)
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}
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}
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@Suppress("MagicNumber")
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@Composable
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fun SlideInItemVisibility(
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visible: Boolean,
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currentIndex: Int,
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lastIndex: Int,
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modifier: Modifier = Modifier,
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content: @Composable () -> Unit,
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) {
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val maxDelay = 250
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val delayEnter = minOf(50 * currentIndex, maxDelay)
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val delayExit = minOf(50 * (lastIndex - currentIndex - 1), maxDelay)
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AnimatedVisibility(
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modifier = modifier,
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visible = visible,
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enter = expandVertically(
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tween(200, delayMillis = delayEnter, easing = LinearOutSlowInEasing),
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expandFrom = Alignment.Top,
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) + fadeIn(tween(200, delayMillis = delayEnter, easing = LinearOutSlowInEasing)),
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exit = shrinkVertically(
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tween(150, delayMillis = delayExit, easing = FastOutLinearInEasing),
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shrinkTowards = Alignment.Top,
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) + fadeOut(tween(150, delayMillis = delayExit, easing = FastOutLinearInEasing)),
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) {
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content()
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}
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}
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@Composable
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private fun EmptyAccountContent(emptyConent: PortfolioItemContentUM.Empty, modifier: Modifier = Modifier) {
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Column(
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modifier = modifier,
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horizontalAlignment = Alignment.CenterHorizontally,
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) {
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SpacerH16()
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NonContentItemContent()
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val emptyAction = emptyConent.action
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if (emptyAction != null) {
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SpacerH16()
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SecondarySmallButton(
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config = SmallButtonConfig(
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text = emptyAction.text,
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onClick = { emptyAction.onClick() },
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),
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)
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}
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SpacerH24()
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}
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}
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@Composable
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fun NonContentItemContent(modifier: Modifier = Modifier) {
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Column(
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modifier = modifier,
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verticalArrangement = Arrangement.spacedBy(space = TangemTheme.dimens.spacing16),
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horizontalAlignment = Alignment.CenterHorizontally,
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) {
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Icon(
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painter = painterResource(id = R.drawable.ic_empty_64),
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contentDescription = null,
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modifier = Modifier.size(size = TangemTheme.dimens.size64),
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tint = TangemTheme.colors.icon.inactive,
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)
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Text(
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text = stringResourceSafe(id = R.string.main_empty_tokens_list_message),
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modifier = Modifier.padding(horizontal = TangemTheme.dimens.spacing48),
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color = TangemTheme.colors.text.tertiary,
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textAlign = TextAlign.Center,
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style = TangemTheme.typography.caption2,
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)
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}
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}
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private fun Modifier.testModifier(index: Int, testTag: String): Modifier = this
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.testTag(testTag)
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.semantics { lazyListItemPosition = index }
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