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Add helpers for duplicate Wear Compose code (#2175)
* Add ExpandableListHeader, rememberExpandedStates * Add helper for ScalingLazyColumn * Add helper for Chip in Settings * Swap if statement
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72 changes: 72 additions & 0 deletions
72
wear/src/main/java/io/homeassistant/companion/android/home/views/ExpandableListHeader.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| package io.homeassistant.companion.android.home.views | ||
|
|
||
| import androidx.compose.foundation.clickable | ||
| import androidx.compose.foundation.layout.Row | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.mutableStateMapOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.snapshots.SnapshotStateMap | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.res.stringResource | ||
| import androidx.compose.ui.tooling.preview.Preview | ||
| import androidx.wear.compose.material.Text | ||
| import io.homeassistant.companion.android.common.R | ||
| import org.checkerframework.checker.units.qual.K | ||
|
|
||
| /** | ||
| * Remember expanded state of each header | ||
| */ | ||
| @Composable | ||
| fun <K> rememberExpandedStates( | ||
| initialKeys: Iterable<K> | ||
| ): SnapshotStateMap<K, Boolean> { | ||
| return remember { | ||
| mutableStateMapOf<K, Boolean>().apply { | ||
| initialKeys.forEach { key -> | ||
| put(key, true) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @Composable | ||
| fun ExpandableListHeader( | ||
| string: String, | ||
| expanded: Boolean, | ||
| onExpandChanged: (Boolean) -> Unit | ||
| ) { | ||
| androidx.wear.compose.material.ListHeader( | ||
| modifier = Modifier | ||
| .clickable { onExpandChanged(!expanded) } | ||
| ) { | ||
| Row { | ||
| val plusMinus = if (expanded) "-" else "+" | ||
| Text( | ||
| text = "$string\u2001$plusMinus" | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @Composable | ||
| fun <K> ExpandableListHeader( | ||
| string: String, | ||
| key: K, | ||
| expandedStates: SnapshotStateMap<K, Boolean> | ||
| ) { | ||
| ExpandableListHeader( | ||
| string = string, | ||
| expanded = expandedStates.getOrDefault(key, true), | ||
| onExpandChanged = { expandedStates[key] = it } | ||
| ) | ||
| } | ||
|
|
||
| @Preview | ||
| @Composable | ||
| private fun PreviewExpandableListHeader() { | ||
| ExpandableListHeader( | ||
| string = stringResource(R.string.other), | ||
| expanded = true, | ||
| onExpandChanged = {} | ||
| ) | ||
| } |
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