Refactor LeftSideScreen and RightSideScreen

Reusable UnitsList

feature/converter/src/main/java/com/sadellie/unitto/feature/converter/LeftSideScreen.kt

@@ -18,13 +18,9 @@
 
 package com.sadellie.unitto.feature.converter
 
-import androidx.compose.animation.Crossfade
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.lazy.LazyColumn
-import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
@@ -33,12 +29,11 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.nestedscroll.nestedScroll
-import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.sadellie.unitto.core.base.R
-import com.sadellie.unitto.core.ui.common.SearchPlaceholder
 import com.sadellie.unitto.core.ui.common.EmptyScreen
 import com.sadellie.unitto.core.ui.common.SearchBar
 import com.sadellie.unitto.data.converter.UnitID
@@ -46,10 +41,9 @@ import com.sadellie.unitto.data.model.UnitGroup
 import com.sadellie.unitto.data.model.UnitsListSorting
 import com.sadellie.unitto.data.model.unit.AbstractUnit
 import com.sadellie.unitto.data.model.unit.NormalUnit
-import com.sadellie.unitto.feature.converter.components.BasicUnitListItem
 import com.sadellie.unitto.feature.converter.components.ChipsRow
 import com.sadellie.unitto.feature.converter.components.FavoritesButton
-import com.sadellie.unitto.feature.converter.components.UnitGroupHeader
+import com.sadellie.unitto.feature.converter.components.UnitsList
 import java.math.BigDecimal
 
 @Composable
@@ -129,25 +123,13 @@ private fun LeftSideScreen(
             }
         }
     ) { paddingValues ->
-        Crossfade(
-            targetState = uiState.units.isNotEmpty(),
+        val resources = LocalContext.current.resources
+        UnitsList(
             modifier = Modifier.padding(paddingValues),
-            label = "Units list"
-        ) { hasUnits ->
-            when (hasUnits) {
-                true -> LazyColumn(Modifier.fillMaxSize()) {
-                    uiState.units.forEach { (unitGroup, units) ->
-                        item(unitGroup.name) {
-                            UnitGroupHeader(Modifier.animateItemPlacement(), unitGroup)
-                        }
-
-                        items(units, { it.id }) {
-                            BasicUnitListItem(
-                                modifier = Modifier.animateItemPlacement(),
-                                name = stringResource(it.displayName),
-                                supportLabel = stringResource(it.shortName),
-                                isFavorite = it.isFavorite,
-                                isSelected = it.id == uiState.unitFrom.id,
+            groupedUnits = uiState.units,
+            navigateToUnitGroups = navigateToUnitGroups,
+            currentUnitId = uiState.unitFrom.id,
+            supportLabel = { resources.getString(it.shortName) },
             onClick = {
                 onQueryChange(TextFieldValue())
                 updateUnitFrom(it)
@@ -157,17 +139,6 @@ private fun LeftSideScreen(
         )
     }
 }
-                }
-
-                false -> SearchPlaceholder(
-                    onButtonClick = navigateToUnitGroups,
-                    supportText = stringResource(R.string.converter_no_results_support),
-                    buttonLabel = stringResource(R.string.open_settings_label)
-                )
-            }
-        }
-    }
-}
 
 @Preview
 @Composable

feature/converter/src/main/java/com/sadellie/unitto/feature/converter/RightSideScreen.kt

@@ -18,38 +18,32 @@
 
 package com.sadellie.unitto.feature.converter
 
-import androidx.compose.animation.Crossfade
-import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.lazy.LazyColumn
-import androidx.compose.foundation.lazy.items
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.nestedscroll.nestedScroll
-import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.sadellie.unitto.core.base.OutputFormat
 import com.sadellie.unitto.core.base.R
-import com.sadellie.unitto.core.ui.common.SearchPlaceholder
 import com.sadellie.unitto.core.ui.common.EmptyScreen
 import com.sadellie.unitto.core.ui.common.SearchBar
 import com.sadellie.unitto.core.ui.common.textfield.FormatterSymbols
 import com.sadellie.unitto.core.ui.common.textfield.formatExpression
 import com.sadellie.unitto.data.common.format
+import com.sadellie.unitto.data.converter.UnitID
 import com.sadellie.unitto.data.model.UnitGroup
 import com.sadellie.unitto.data.model.UnitsListSorting
 import com.sadellie.unitto.data.model.unit.AbstractUnit
 import com.sadellie.unitto.data.model.unit.DefaultUnit
 import com.sadellie.unitto.data.model.unit.NormalUnit
 import com.sadellie.unitto.data.model.unit.NumberBaseUnit
-import com.sadellie.unitto.data.converter.UnitID
-import com.sadellie.unitto.feature.converter.components.BasicUnitListItem
 import com.sadellie.unitto.feature.converter.components.FavoritesButton
-import com.sadellie.unitto.feature.converter.components.UnitGroupHeader
+import com.sadellie.unitto.feature.converter.components.UnitsList
 import java.math.BigDecimal
 
 @Composable
@@ -103,34 +97,24 @@ private fun RightSideScreen(
             )
         }
     ) { paddingValues ->
-        Crossfade(
-            targetState = uiState.units.isNotEmpty(),
+        val resources = LocalContext.current.resources
+        UnitsList(
             modifier = Modifier.padding(paddingValues),
-            label = "Units list"
-        ) { hasUnits ->
-            when (hasUnits) {
-                true -> LazyColumn(Modifier.fillMaxSize()) {
-                    uiState.units.forEach { (unitGroup, units) ->
-                        item(unitGroup.name) {
-                            UnitGroupHeader(Modifier.animateItemPlacement(), unitGroup)
-                        }
-
-                        items(units, { it.id }) {
-                            BasicUnitListItem(
-                                modifier = Modifier.animateItemPlacement(),
-                                name = stringResource(it.displayName),
-                                supportLabel = formatUnitToSupportLabel(
+            groupedUnits = uiState.units,
+            navigateToUnitGroups = navigateToUnitGroups,
+            currentUnitId = uiState.unitTo.id,
+            supportLabel = {
+                formatUnitToSupportLabel(
                     unitFrom = uiState.unitFrom,
                     unitTo = it,
                     input = uiState.input,
-                                    shortName = stringResource(it.shortName),
+                    shortName = resources.getString(it.shortName),
                     scale = uiState.scale,
                     outputFormat = uiState.outputFormat,
                     formatterSymbols = uiState.formatterSymbols,
                     readyCurrencies = uiState.currencyRateUpdateState is CurrencyRateUpdateState.Ready,
-                                ),
-                                isFavorite = it.isFavorite,
-                                isSelected = it.id == uiState.unitTo.id,
+                )
+            },
             onClick = {
                 onQueryChange(TextFieldValue())
                 updateUnitTo(it)
@@ -140,17 +124,6 @@ private fun RightSideScreen(
         )
     }
 }
-                }
-
-                false -> SearchPlaceholder(
-                    onButtonClick = navigateToUnitGroups,
-                    supportText = stringResource(R.string.converter_no_results_support),
-                    buttonLabel = stringResource(R.string.open_settings_label)
-                )
-            }
-        }
-    }
-}
 
 private fun formatUnitToSupportLabel(
     unitFrom: AbstractUnit?,

feature/converter/src/main/java/com/sadellie/unitto/feature/converter/components/UnitsList.kt

@@ -0,0 +1,110 @@
+/*
+ * Unitto is a calculator for Android
+ * Copyright (c) 2024 Elshan Agaev
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.sadellie.unitto.feature.converter.components
+
+import androidx.compose.animation.Crossfade
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import com.sadellie.unitto.core.base.R
+import com.sadellie.unitto.core.ui.common.SearchPlaceholder
+import com.sadellie.unitto.data.converter.UnitID
+import com.sadellie.unitto.data.model.UnitGroup
+import com.sadellie.unitto.data.model.unit.AbstractUnit
+import com.sadellie.unitto.data.model.unit.NormalUnit
+import java.math.BigDecimal
+
+@Composable
+internal fun UnitsList(
+    modifier: Modifier,
+    groupedUnits: Map<UnitGroup, List<AbstractUnit>>,
+    navigateToUnitGroups: () -> Unit,
+    currentUnitId: String,
+    supportLabel: (AbstractUnit) -> String,
+    onClick: (AbstractUnit) -> Unit,
+    favoriteUnit: (AbstractUnit) -> Unit,
+) {
+    Crossfade(
+        modifier = modifier,
+        targetState = groupedUnits.isNotEmpty(),
+        label = "Units list"
+    ) { hasUnits ->
+        when (hasUnits) {
+            true -> LazyColumn(
+                modifier = Modifier.fillMaxSize()
+            ) {
+                groupedUnits.forEach { (group, units) ->
+                    item(group.name) {
+                        UnitGroupHeader(Modifier.animateItemPlacement(), group)
+                    }
+
+                    items(units, { it.id }) {
+                        BasicUnitListItem(
+                            modifier = Modifier.animateItemPlacement(),
+                            name = stringResource(it.displayName),
+                            supportLabel = supportLabel(it),
+                            isFavorite = it.isFavorite,
+                            isSelected = it.id == currentUnitId,
+                            onClick = { onClick(it) },
+                            favoriteUnit = { favoriteUnit(it) },
+                        )
+                    }
+                }
+            }
+
+            false -> SearchPlaceholder(
+                onButtonClick = navigateToUnitGroups,
+                supportText = stringResource(R.string.converter_no_results_support),
+                buttonLabel = stringResource(R.string.open_settings_label)
+            )
+        }
+    }
+}
+
+@Preview
+@Composable
+private fun PreviewUnitsList() {
+    val resources = LocalContext.current.resources
+    val groupedUnits: Map<UnitGroup, List<AbstractUnit>> = mapOf(
+        UnitGroup.LENGTH to listOf(
+            NormalUnit(UnitID.meter, BigDecimal.valueOf(1.0E+18), UnitGroup.LENGTH, R.string.unit_meter, R.string.unit_meter_short),
+            NormalUnit(UnitID.kilometer, BigDecimal.valueOf(1.0E+21), UnitGroup.LENGTH, R.string.unit_kilometer, R.string.unit_kilometer_short),
+            NormalUnit(UnitID.nautical_mile, BigDecimal.valueOf(1.852E+21), UnitGroup.LENGTH, R.string.unit_nautical_mile, R.string.unit_nautical_mile_short),
+            NormalUnit(UnitID.inch, BigDecimal.valueOf(25_400_000_000_000_000), UnitGroup.LENGTH, R.string.unit_inch, R.string.unit_inch_short),
+            NormalUnit(UnitID.foot, BigDecimal.valueOf(304_800_000_000_002_200), UnitGroup.LENGTH, R.string.unit_foot, R.string.unit_foot_short),
+            NormalUnit(UnitID.yard, BigDecimal.valueOf(914_400_000_000_006_400), UnitGroup.LENGTH, R.string.unit_yard, R.string.unit_yard_short),
+            NormalUnit(UnitID.mile, BigDecimal.valueOf(1_609_344_000_000_010_500_000.0), UnitGroup.LENGTH, R.string.unit_mile, R.string.unit_mile_short),
+        )
+    )
+
+    UnitsList(
+        modifier = Modifier.fillMaxSize(),
+        groupedUnits = groupedUnits,
+        navigateToUnitGroups = {},
+        currentUnitId = UnitID.mile,
+        supportLabel = { resources.getString(it.shortName) },
+        onClick = {},
+        favoriteUnit = {}
+    )
+}